ELECTRIC SWITCH WITH ONE SWITCHABLE CONTROL BUTTON

Description

[0001] The present invention relates, in general, to electrical switches.

[0002] The invention relates more particularly to a switch which includes a control button, accessible to the user, adapted to tilt by a first angle around a first axis of rotation, and a tilting part located under the control button, adapted to tilt by a second axis of rotation, distinct from the first axis of rotation, by a second angle greater than said first angle.

[0003] The invention finds a particularly advantageous application in the construction of a switch or a two-way switch. The toggle piece then acts as a driver that drives a movable contact brush between two switching positions.

[0004] Currently, there are various systems in which the control key has a small tilting angle and is capable of tilting an internal part by an angle sufficient to move a movable contact element between two determined switching positions.

[0005] The small tilt angle of the control key is a feature sought after by manufacturers to facilitate the actuation of the switch and improve its aesthetics.

[0006] A known system consists of two rocker elements positioned beneath the control button, each with a pivot axis offset from the control button's axis of rotation. These two rocker elements are placed on either side of the control button's axis of rotation so that they can alternately engage with the internal rocker. When the control button is pressed, it rocks one or the other of the rocker elements, which in turn acts on the internal rocker, tilting it by a predetermined angle.

[0007] Such a system is described in particular in document CN214068620 U.

[0008] Another known system, described in document CN103681074, consists of a transition piece between the control button and the internal tilting part. This transition piece is hinged around the rotation axis of the control button and includes a yoke that forms a rotation axis for the internal part, which cooperates with this yoke. Furthermore, this system provides two arms extending from the rear face of the control button. These arms bear against two opposite parts of the internal part, causing it to tilt within the yoke when the control button is tilted.

[0009] The main drawback of the aforementioned systems is that they involve one or more additional articulated elements between the control button and the internal part to be actuated. Each additional articulated element complicates the system's construction and consequently increases its manufacturing cost.

[0010] Finally, we know from document CN113345750 of a switch comprising a control button whose rear face has an arm extending backwards, perpendicular to said rear face. The free end of the arm has a concave, semi-cylindrical surface that cooperates with a cylindrical surface of a tilting part adapted to actuate a movable contact brush between two fixed contacts.

[0011] To overcome the main drawback of the aforementioned prior art, the present invention proposes an alternative solution to that disclosed in document CN113345750, according to which a new switch comprises a control button that has a small tilting angle and that cooperates directly with said internal part to tilt it by the determined angle. The expression "cooperates directly" means that in the switch proposed according to the invention, no additional moving parts are provided relative to the control button that cooperate with said internal part.

[0012] More specifically, according to the invention, a switch is proposed which comprises: a control button, accessible to the user, adapted to tilt by a first angle around a first axis of rotation; a tilting piece located below the control button, adapted to tilt about a second axis of rotation, distinct from the first axis of rotation, by a second angle greater than said first angle; an arm fixedly attached to the control button, extending from the control button, vertically above said first axis of rotation, perpendicular to it, in the direction of said tilting piece, and comprising a free end provided with a sliding surface, and a cam surface carried by the tilting piece. in which said cam surface has two sides forming an angle between 0 and 60 degrees, on which the sliding surface of the free end of the arm slides when the control button is tilted from said first angle to cause the tilting of said rocking part from said second angle.

[0013] Other features of the switch according to the invention are as follows: said sliding surface is a portion of a cylindrical or spherical surface; the first tilting angle of the control button is between 3 and 5 degrees, while the second tilting angle of said rocker is between 8 and 10 degrees, preferably around 9 degrees; the arm has a length measured from the first axis of rotation to its free end equal to 8 millimeters for a first tilting angle of the control button equal to 5 degrees; the first tilting angle of the control button is around 3.5 degrees. the arm has a length measured from the first axis of rotation to its free end equal to 9.5 millimeters; the two faces of the cam surface are inclined relative to each other and the cam surface has a V-shaped profile; the angle formed between the two faces of the cam surface is around 55 degrees;It provides two parallel arms of the same length, fixedly attached to the control button, each arm having a free end provided with a sliding surface cooperating with a cam surface carried by said rocker; the two faces of the cam surface are parallel to each other and the cam surface has a U-shaped profile; the control button comprises two assembled parts, fixed to each other, an external part for the support of a user's finger and an internal part, arranged under the external part, from which said arm extends; the external part is in the form of a plate and the internal part is in the form of a sub-plate which forms an angle of between 1 and 2 degrees with said plate; the external part is snapped onto the internal part;and said toggle piece is a driver which drives a movable contact brush between two switching positions.

[0014] The description that follows, with regard to the attached drawings, given by way of non-limiting examples, will make it clear what the invention consists of and how it can be carried out.

[0015] Regarding the attached drawings: There figure 1 is a schematic exploded perspective view of two variants of a first embodiment of the switch according to the invention, The figure 2 is a schematic side-assembled view of the first variant of the switch figure 1 , There figure 3 is a cross-sectional view according to plane III of the figure 2 , There figure 4 is a schematic view of the principle of the first variant shown on the figure 2 , There figure 5 is a schematic side-assembled view of the second variant of the switch figure 1 , There figure 6is a cross-sectional view according to plane VI of the figure 5 , There figure 7 is a schematic view of the second variant shown on the figure 5 , There figure 8 is a side view of a second embodiment of the switch according to the invention, The figure 9 is a partial side view of the switch figure 8 , There Figure 10 is a cross-sectional view along plane AA of the switch of the figure 8 in a first switching position, and The figure 11 is a cross-sectional view along plane AA of the switch of the figure 8 in a second switching position.

[0016] On the figures 1 to 7 We have represented two variants of a first embodiment of a switch 10 according to the invention.

[0017] The two variants are distinguished from each other by their control button.

[0018] The 300 command key of the first variant is longer than the 400 command key of the second variant.

[0019] The length L1 of the 300 control key is between 70 and 75 millimeters.

[0020] The length L2 of the 400 control key is equal to 45 millimeters.

[0021] In both variants, the switch 10 includes a base 100 made of insulating material which houses a rocker part 200 and electrical terminals (not shown on the figures 1 to 7 ) comprising fixed contacts and a moving contact brush (also not shown on the figures 1 to 7 ) electrically connected to an electrical terminal. The rocker part 200 is a driver suitable for driving the movable contact brush between two switching positions.

[0022] The base 100 and the tilting part 200 are conventionally plastic elements each made from a single piece by a molding operation.

[0023] When switch 10 is a single-pole switch, one of the switching positions corresponds to the contact point of the moving brush making contact with the contact point of a fixed contact, while the other switching position corresponds to the moving brush being out of contact with a fixed contact. When switch 10 is a two-way switch, both switching positions correspond to the contact point of the moving brush making contact with the contact point of two different fixed contacts.

[0024] The base 100 is a housing, here rectangular in shape, with two parallel longitudinal walls 110, 120 and two parallel lateral walls 130, 140. At the front, it has a peripheral edge 102 which defines a front opening through which the drive 200 is mounted in the base 100. Just below the peripheral edge 102, the longitudinal walls 110, 120 have on their outer face two aligned trunnions 106 which define a first axis of rotation X1 for the control button, perpendicular to the outer faces of said longitudinal walls 110, 120 (see figures 2, 3 , 5 And 6Below the trunnions 106, the base 100 has a peripheral walkway 103 that projects from the outer face 101 of the housing. Furthermore, on the outer face of each side wall 130, 140, there is a tooth 104 facing the walkway 103 and an inclined surface 105 extending from the tooth 104 to the outer face of the side wall. The space between the walkway 103 and each tooth 104 has a height that corresponds, to within a clearance, to the height of a mounting rib for a device support (not shown here), so that the walkway 103, the tooth 104, and the inclined surface 105 form, on the outer face of each side wall 130, 140, conventional mounting means for the base 100 on the device support.For its assembly, the base 100 is inserted into an opening in the device support so that the inclined surfaces 105 slide on a portion of said support until the teeth 104 engage with the support's locking rib and the sidewalk 103 rests on said support. Thus, the device support is sandwiched between the sidewalk 103 and the teeth 104 of the base 100, which is fixed to it. Finally, as shown in the diagrams... Figures 1 , 2 , 3 , 5 And 6 , each longitudinal wall 110, 120 of the base 100 has, here, a wide opening 111, 121 whose edge forms, locally, near the bottom of the base, a seat 112, 122 with a concave bottom centered on a second axis X2 (see figures 2 And 5 The second axis X2 and the first axis of rotation X1 are distinct, coplanar, and parallel. The first and second axes X1 and X2 belong to planes III-III and VI-VI, respectively identified on the... figures 2 And 5 .

[0025] The tilting piece 200, forming the drive for the switch 10, has two parallel sides 210. Each side 210 has a projecting stud 212 on its outer face 210A (i.e., the face facing the walls of the base when the drive is inserted into the base), at least part of whose edge is rounded. As shown in the figures 2, 3 , 5 And 6 , the tilting piece 200 is brought into the base 100 in such a way that its sides 210 close part of the openings 111, 121 of the base 100 and that the studs 212 carried by the sides 210 are engaged in the seats 112, 222, the rounded edge of each stud 212 coming into perfect contact with the concave bottom of the seat 112, 122 to articulate the tilting piece 200 around the second axis X2 which thus forms the axis of rotation of said tilting piece 200.

[0026] Each side 210 of the tilting part 200 has a V-shaped notch 211 which opens towards the front of the switch 10 and whose point 211C is located behind the stud 212 (see figures 3 And 6 Each notch 211 is delimited by a V-shaped edge having two faces 211A, 211B inclined relative to each other. In the example shown, the two faces 211A, 211B of the edge of the notch 211 form an angle of approximately 55 degrees, but in other, unshown variations, the angle between the faces 211A, 211B can vary between 0 and 60 degrees. The edge of each notch 211 forms a V-shaped cam surface 211 for a sliding portion belonging to the control button 300; 400, as will be described below.

[0027] In both variants of switch 10 shown on the figures 1 to 7The 300;400 control button is a rigid one-piece part made of molded plastic material.

[0028] It includes a plate 301;401 whose front face 301A;401A forms the support surface for a user's finger. This plate 301;401 has a rectangular shape. In the first version, shown on the figures 1 to 4 The 301 plate has a length L1 between 70 and 75 millimeters. In the second version, shown on the Figures 1 And 5 à 7The plate 401 has a length L2 of approximately 45 millimeters. The plate 301;401 of the control button 300;400 is bordered by a rim with two longitudinal panels 302;402 and two end lateral panels 303;403. For aesthetic reasons, the front face 301A;401A of the plate 301;401 is continuously joined by rounded edges to the outer face of the end lateral panels 303;403. In each longitudinal panel 302;402 of the rim of the control button 300;400, there is a keyhole-shaped opening that leads to a free edge 302A;402A of said longitudinal panel 302;402. This opening includes, from said free edge 302A; 402A, a flared mouth 304;404 which communicates with a circular part 306;406 via a bottleneck 305;405. The diameter of the circular part 306;406 of said openings corresponds to the diameter of the trunnions 106 of the base 100.As shown by the . figures 2, 3 , 5 And 6The control button 300; 400 is attached to the front of the base 100 so as to close the front opening of the latter. The keyhole-shaped openings of the control button 300; 400 are snapped onto the trunnions 106 of the base 100 so that the circular part 306; 406 of each opening accommodates a trunnion 106 to allow the control button 300; 400 to pivot around the first axis of rotation X1. The locking of each opening is achieved by engaging the flared mouth 304;404 on each trunnion 106 and pressing the control button 300;400 towards the base 100 so that each trunnion 106 is forced (by elastic deformation of the longitudinal panel 302;402) through the bottleneck 305;405 and is housed in the circular part 306;406. Once mounted on the trunnions 106, the control button 300;400 is securely attached to the base 100 for rotation.It cannot be detached from the base 100 without pulling on it strongly. By tilting around the first axis of rotation X1, the control key 300;400 can take two tilting positions relative to the base 100 (one of which is shown on the . figures 2 And 5 ). In each of its tilting positions, part of the free edge 302A;402A of the longitudinal panels 302;402 of the rim of the control button 300;400 is placed against the external curb 103 of the base 100 which, advantageously, limits the angular travel of the control button 300;400.

[0029] According to a notable feature of switch 10, as shown in the schematic diagrams shown on the figures 4 And 7, it is planned, on the one hand, an arm 310; 410 fixedly attached to the control button 300; 400, which extends from the control button 300;400, directly above said first axis of rotation X1, perpendicular to it, in the direction of said rocker 200, and which has a free end 311;411 provided with a sliding surface 312;412, and, on the other hand, the cam surface 211 carried by the rocker 200, whose two faces 211A, 211B here form an angle of approximately 55 degrees and on which the sliding surface 312;412 of the free end 311;411 of the arm 310;410 slides when the control button 300;400 is rocked around the first axis of rotation X1 by a first angle determined to cause said rocker 200 to rock around the second axis of rotation X2 by a second determined angle clearly greater than said first angle.

[0030] This particularly advantageous arrangement allows obtaining a switch 10 whose control button 300;400 has a reduced tilting angle of between 3 and 5 degrees and actuates said tilting part 200 so that it tilts by an angle of between 8 and 10 degrees, preferably of the order of 9 degrees to move the movable contact brush between its two switching positions.

[0031] Reducing the tilt angle of the 300;400 control key makes the 10 switch easily operable and more aesthetically pleasing.

[0032] According to the two variants shown on the figures 1 to 7 , two parallel arms 310;410 of the same length are provided, fixedly attached to the control button 300;400, each arm 310 having a free end 311 provided with a sliding surface 312 cooperating with one of the cam surfaces 211 carried by said rocking piece 200.

[0033] As shown by figures 3 And 6 , the arms 310 ;410 form a single piece with the control button 300 ;400. They extend from the rear face 301B ;401B of the plate 301 ;401, perpendicularly to it. The arms 310;410 are spread apart so that they engage in the notches of the sides 210 of the tilting part 200, the sliding surface of the free end 311;411 of said arms 310;410 coming into contact with the V-shaped edge of these notches 211. When the control button 300;400 is pivoted around said first axis of rotation X1, the sliding surface of the free end 311;411 of said arms 310;410 slides on the inclined faces 211A,211B of the V-shaped edge of the notches and causes said tilting part 200 to pivot around said second axis of rotation X2.

[0034] Here, the free end 311;411 of the arms 310;410 of the control key 300;400 is a portion of a disk, and the sliding surface 312;412 of this free end 311;411 is formed by the edge of this portion of the disk. This sliding surface 312;412 is therefore a portion of a cylindrical surface.

[0035] According to the first variant of switch 10, represented more specifically on the figure 4The control button 300 (with a length L1 between 70 and 70 millimeters) is capable of tilting through an angle A1 of approximately 3.5 degrees. It comprises arms 310 whose length D1, measured from the first axis of rotation X1 (i.e., here from the root of the arms on the rear face of the pad) to the free end 311 (more precisely, to the center of the disc constituting the free end 311), is approximately 9.5 millimeters. The tilting angle A3 of the drive 200 actuated by the control button 300 is approximately 9 degrees.

[0036] According to the second variant of switch 10, represented more specifically on the figure 7The control button 400 (with a length L2 of 45 millimeters) is capable of tilting through an angle A2 of approximately 5 degrees. It comprises arms 410 whose length D2, measured from the first axis of rotation X1 (i.e., here from the root of the arms on the rear face of the pad) to the free end 411 (more precisely, to the center of the disc constituting the free end 411), is approximately 8 millimeters. The tilting angle A4 of the drive 200 actuated by the control button 400 is approximately 9 degrees.

[0037] In both variants described above, the free ends 311;411 of the arms 310;410 are located in an internal space of the base 100 between the first axis of rotation X1 and the second axis of rotation X2.

[0038] On the figures 8 to 11 a second embodiment of a switch 20 according to the invention has been represented.

[0039] As shown in particular by figure 8 The switch 20 comprises a base 500 made of insulating material, consisting of an assembled rear part 510 and front part 520. The rear part 510 is a housing with a base and a front opening. This housing contains the electrical components of the switch 20 as well as part of the drive 700. The front part 520 is a type of housing open at both the front and rear. It is fitted into the front opening of the rear part 510. The front opening of the front part 520 is closed by the control button 600, which is adapted to pivot around a first axis of rotation X1. The front part 520 has tabs 521 on the rear that are snapped onto teeth 511 projecting from the outer face of the rear part 510. The front part 520 has a peripheral curb 503 on the outside against which the control button 600 rests in its two tilting positions (see Figures 10 and 11 ).

[0040] The switch 20 is a two-way switch. It has two screw terminals B1, B2 from which fixed conductive tabs 1, 2 extend, each carrying a contact point 1A, 2A, and a movable brush 4 carrying a contact point 4A. The movable brush 4 is pivotally mounted on a clevis 3 belonging to a conductive tab extending from a third screw terminal B3.

[0041] The 700 trainer is a one-piece unit made of molded plastic material.

[0042] It includes a barrel 720 which attaches part of the moving brush 4. This barrel 720 houses, in a conventional manner, a compressed spring 5 between the moving brush 4 and the barrel 720 (see figures 9 to 11 ).

[0043] The 700 drive unit is tilt-mounted in the 500 base. It is designed to be tilted by the 600 control button between two stable positions to tilt the moving brush 4 between two switching positions shown on the Figures 10 and 11where the contact grain 4A of the moving brush 4 is in contact alternately with the contact grains 1A, 2A of the fixed conductive tabs 1, 2.

[0044] The 700 trainer has, at the front of the 720 shaft, a 710 head with an open inner housing facing the 600 control button. The bottom of this inner housing is concave (see Figures 10 and 11 The head 710 comprises two parallel legs 713 that rise towards the control button 600 from the edge 710A of the front opening of the head 710 of the driver 700. These two legs 713 carry, on two opposite external faces, two trunnions 712 aligned along a second axis of rotation X2 forming the axis of rotation of the driver 700. The trunnions 712 are engaged in bearings of the front part 520 of the base 500 and they form the pivoting means of the driver 700.

[0045] As shown by Figures 10 and 11, in the inner housing of the head 710 of the trainer 700, there are two parallel partitions which together with the concave bottom form a cam surface 711 with a U-shaped profile open towards the front opening of the head 710 of the trainer 700. This U-shaped cam surface 711 is intended to cooperate with a sliding part belonging to the control key 600 as will be described below.

[0046] The control key 600 has two assembled parts, fixed to each other, an external part 610 for the support of a user's finger and an internal part 620, arranged under the external part 610.

[0047] The external part 610 is in the form of a large square or rectangular plate and the internal part 620 is in the form of a small sub-plate also in the form of a square or rectangular plate centered with respect to the external part 610.

[0048] The large plate 610 is bordered by a peripheral rim 611. It has on its rear face tabs 612 snapped into corresponding openings of the sub-plate 620. The sub-plate 620 forms an angle E of between 1 and 2 degrees (preferably equal to 1.75 degrees) with the large plate 610.

[0049] In each of the tilting positions of the control button 600, a portion of the free edge of the peripheral rim 611 of the large plate 610 rests against the outer edge 503 of the base 500, which advantageously limits the angular travel of the control button 600 (see the Figures 10 and 11 ).

[0050] The sub-plate 620 has on two opposite edges two trunnions centered on a first axis of rotation X1 forming the axis of rotation of the control key 600. The trunnions are engaged in bearings of the front part 520 of the base 500 and they form the means of pivoting the control key 600.

[0051] The second axis of rotation X2 and the first axis of rotation X1 are distinct, coplanar, and parallel. The first and second axes X1 and X2 belong to the plane BB identified on the figure 8 .

[0052] According to a notable feature of switch 20, as shown by the Figures 10 and 11On the one hand, there is provided an arm 630 fixedly attached to the sub-plate 620 of the control button 600, which extends from the sub-plate 620, vertically above said first axis of rotation X1, perpendicular to it, in the direction of the driver 700 and which has a free end 631 provided with a sliding surface 632, and, on the other hand, the cam surface 711 carried by the front part 710 of the driver 700 whose two faces 711A, 711B are parallel (forming a zero angle between them) and on which the sliding surface 632 of the free end 631 of the arm 630 slides when the control button 600 is tilted by a first determined angle to cause the driver 700 to tilt by a second determined angle significantly greater than said first angle.

[0053] Here too, this particularly advantageous arrangement allows for a switch 20 whose control button 600 has a reduced tilting angle F1 of approximately 3.5 degrees and actuates the driver 700 so that it tilts through an angle between 8 and 10 degrees, preferably around 9 degrees (more precisely here equal to 8.6 degrees), to move the movable contact brush 4 through an angle of 20 degrees between its two switching positions. The angle C1 identified on the Figures 10 and 11 is the orientation angle of the 700 driver in each of its two switching positions. This angle C1 has a value of approximately 4.3 degrees, so the 700 driver must travel an angular sector of approximately 8.6 degrees to move from one switching position to the other.

[0054] Reducing the tilt angle of the 600 control key makes the 20 switch easily operable and more aesthetically pleasing.

[0055] According to the example shown on the Figures 10 and 11A single arm 630 is provided, extending from the center of the rear face of the sub-plate 620, perpendicular to it. The arm 630 and the sub-plate 620 are molded and form a single piece. The free end 631 of the arm 630 is shaped into a cylinder that extends on either side of the arm 630 along an axis perpendicular to the longitudinal direction of the arm 630. The sliding surface 632 is thus a cylindrical surface suitable for sliding on the flats 711A, 711B of the U-shaped cam surface 711. These flats 711A, 711B are formed by the surfaces opposite the partitions provided in the head 710 of the driver 700. Finally, the length H1 of the arm 630 measured from the first axis of rotation X1 (i.e. here from the root of the arm on the rear face of the sub-plate) to the axis of the cylinder forming the free end 631 of the arm 630 is between 8 and 10 millimeters, preferably on the order of 9 millimeters.

[0056] As the Figures 10 and 11 The axis of the free end 631 of the arm 630 is parallel to the axes X1 and X2. The rotation axis X2 of the trainer 700 (also called the second rotation axis X2) is located in a space extending between the first rotation axis X1 of the control key 700 and the axis of the free end 631 of the arm 630.

[0057] Of course, various other modifications can also be made to the invention within the scope of the appended claims. In particular, it may be provided that said sliding surface is a spherical surface.

Claims

1. A switch (10; 20) which comprises a control button (300; 400; 600), accessible to the user, adapted to tilt by a first angle (A1; A2; E) about a first axis of rotation (X1), a tilting part (200; 700) located under the control button, adapted to tilt about a second axis of rotation (X2), distinct from the first axis of rotation, by a second angle (A3; A4) greater than said first angle (A1; A2), an arm (310; 410; 630) firmly secured to the control button (300; 400; 600), which extends from the control button, in vertical alignment to said first axis of rotation (X1), perpendicularly to it, in the direction of said tilting part (200; 700) and which comprises a free end (311; 411; 631) provided with a sliding surface (312; 412; 632), and a cam surface (211;711) carried by the tilting part (200; 700), characterised in that the cam surface (211; 711) has two faces (211A, 211B; 711A, 711B) forming an angle of between 0 and 60 degrees, on which the sliding surface (312; 412; 632) of the free end (311; 411; 631) of the arm (310; 410; 630) slides when the control button (300; 400; 600) is tilted by said first angle to cause the tilting of said tilting part (200; 700) by said second angle.

2. The switch (10; 20) according to claim 1, wherein said sliding surface (312; 412; 632) is a cylindrical or spherical surface portion.

3. The switch (10; 20) according to any one of claims 1 and 2, wherein the first tilting angle of the control button (300; 400; 600) is of between 3 and 5 degrees, whereas the second tilting angle of said tilting part (200; 700) is of between 8 and 10 degrees, preferably of around 9 degrees.

4. The switch (10) according to claim 3, wherein the arm (410) has a length measured from the first axis of rotation (X1) to the free end (411) equal to 8 millimetres for a first tilting angle of the control button (400) equal to 5 degrees.

5. The switch (10; 20) according to claim 3, wherein the first tilting angle of the control button (300; 600) is of around 3.5 degrees.

6. The switch according to claim 5, wherein the arm (310; 630) has a length measured from the first axis of rotation (X1) to the free end (311; 631) equal to 9.5 millimetres.

7. The switch (10) according to any one of claims 1 to 6, wherein the two faces (211A, 211B) of the cam surface (211) are inclined relative to each other and the cam surface (211) has a V-shaped profile.

8. The switch (10) according to claim 7, wherein the angle formed between the two faces (211A, 211B) of the cam surface (211) is of around 55 degrees.

9. The switch (10) according to any one of claims 1 to 8, wherein two parallel arms (310; 410) of the same length are provided, firmly secured to the control button (300; 400), each arm (310; 410) comprising a free end (311; 411) provided with a sliding surface (312; 412) cooperating with a cam surface (211) carried by said tilting part (200).

10. The switch (20) according to any one of claims 5 and claim 6, wherein the two faces (711A, 711B) of the cam surface (711) are parallel relative to each other and the cam surface (711) has a U-shaped profile.

11. The switch (20) according to claim 10, wherein the control button (600) comprises two assembled portions, fixed relative to each other, an outer portion (610) for the support of a user's finger and an inner portion (620), arranged under the outer portion, from which said arm (630) extends.

12. The switch (20) according to claim 11, wherein the outer portion is in the form of a pad (610) and the inner portion is in the form of a sub-pad (620) which forms an angle of between 1 and 2 degrees with said pad (610).

13. The switch (20) according to one of claims 11 and 12, wherein the outer portion (610) is snap-fitted onto the inner portion (620).

14. The switch (10; 20) according to any preceding claims, wherein said tilting part (200; 700) is a driver which causes a movable contact brush between two switching positions.