EP1416506A2 - Input device with a button movable around several axis - Google Patents

Abstract

The two axis rotating adjustment has a push button allowing rotation in first and second axes and placed on the support face of an electric circuit. The button activates manipulation movement in one of two orientation planes with transmission effected using two pieces forming an interface.

Description

The present invention relates to a control member provided with a button. rotary manipulation for actuating a first function, said button which can in addition in certain cases function as a push button and be operated along different axes of movement, for example by axial pressure at certain points on its periphery. The slots corresponding devices are then of course indicated to the user by means of appropriate signaling, and each generates the activation work of a separate function.

For a conventional button, for example with a cylindrical appearance, it is in particular possible to provide four peripheral support zones located at 90 ° from each other, and allowing the rotation to lead to the command at least five to six different functions.

This type of control device finds its place in particular in passenger compartments of motor vehicles, for example for controlling different parts of a seat, or for adjusting the right-hand mirrors and left, etc ...

These organs are relatively complex because they must transmit displacements which one must be able to clearly differentiate despite the narrowness relative of the surface on which the order is made. The solutions use the two surfaces of a printed circuit to perform jointly the functions corresponding to the rotary and axial displacements in the reduced space that is allocated to the button. For obvious economic reasons, this type of control device must however be designed with the minimum of parts, these must in addition be the most simple possible, so that both manufacturing and assembly costs are as small as possible.

The main objective of the present invention is the optimization of the design of the various elements participating in the operation of the control member, in order to propose a global solution simplified as much as possible, and therefore reliable and offering a high durability. Thus, the control member which is the object uses only one of the faces of the printed circuit with which it cooperates, which provides an appreciable gain in space, as well as an advantage. undeniable economic, both in terms of the number of parts to be assembled and in terms of assembly time.
In fact, the control member according to the invention is provided with a rotary manipulation button around a first axis, and which can be rotated around at least one secondary axis contained in a plane perpendicular to the first axis, by elastic support on at least one location located in the vicinity of the periphery of said manipulation button, and of an electrical circuit provided with components capable of switching according to the stresses applied to the button. In addition to rotation, the button can be in certain configurations manipulated in translation around the first axis.

It is mainly characterized in that said button is secured to a actuator which transmits the manipulation movement to the components, which are arranged on one side of a circuit support facing opposite of the button, the transmission taking place via at least two parts forming interface between said actuator and said circuit, firstly a rotor integral with rotation of the actuator around the first axis, the mechanical connection between them being further provided for authorizing relative movements according to the secondary axes, and on the other hand a fixed plate comprising means elastic connecting to the electrical circuit, which are arranged substantially to the right of the peripheral support locations.

The essential elements of the organ of the invention are therefore, in addition to the manipulation button, an actuator, an electrical circuit and two parts, the rotor and plate, one of which is fixed relative to the frame in which is installed the control member and the other is movable in rotation about the first axis button manipulation, and whose action is performed on components arranged substantially in the same plane and oriented towards the elements constitutive of said organ.

The control of this organ is therefore done either by doing it rotate around said axis, either by exerting pressure, centrally or by specific points on the periphery.

Preferably, the electrical circuit is located on the same face of a printed circuit, which therefore constitutes the aforementioned support. This solution is economically very favorable because it allows mounting simplified different components on said printed circuit on the one hand, and the control unit in its environment on the other hand, without having to provide for the additional installation of other components / printed circuits, for example for the operation of a light emitting diode signaling.

According to one possibility, a sheet of elastic insulating material can be interposed between on the one hand the fixed plate and its elastic connection means with the electrical circuit, and on the other hand said circuit.

This sheet plays a mechanical role, and can for example include moving parts of circuit switching contacts. She then ensures, by its mechanical properties, in particular elastic properties, the return to a stable position said moving parts in the rest phase, as well as a tactile sensation particular when requested. Other solutions without this tablecloth are of course perfectly usable.

In fact, more precisely, the fixed plate, forming one of the constituents of the control unit, takes the form of a thin plate of which protrude studs parallel to the first axis, in number corresponding to the number of peripheral support locations, said studs projecting from at least one side of the plate and being arranged at the free end of at least one flexible tab for each location support, the tab or tabs being formed in the plate and produced in an elastic material allowing them to return to the rest position after action on the studs.

According to one possibility, for each support location, the tabs there are two flexible ones. They are superimposed and linked between they at their end by a same direction pad parallel to the first axis. This improves the direction of transmission of forces by pressing on the contact in a direction parallel to said first axis. According to one of his main functions, this plate is used to transmit pressure - exerted on the periphery of the manipulation button - to the electrical circuit, via the case the above-mentioned tablecloth. A reset is required after each handling, hence the need for elastic tabs. This piece is from preferably made of rigid plastic, but with characteristics mechanical elasticity implemented via the tabs.

The plate also comprises means for guiding the actuator to the studs, which in fact manage the rotations around the axes secondary. More specifically, it presents, in its central area, a orifice of complex shape, formed by a number of radial slots converging at most equal to the number of pads / tabs arranged in periphery, and developing towards them. Preferably, the number of radial slots is equal to that of the studs, and said slots are develop precisely in the direction of said studs.

This guidance must in fact be carried out with sufficient precision so that there is no possible interference in the information that is retransmitted from the manipulation button to the electrical circuit, whatever the number of pads that must be actuated.

The existence of a rotating part actuating contacts requires in number of cases, when there are several separate contacts, an indexing of the position of the rotor relative to the frame in which the ordered. This is the reason why, according to the invention, provision is made for means for indexing said rotor, which however only apply in certain configurations.

According to one possibility, the plate has on one side, on the periphery immediately of the ends of said slots, a relief crown and depressions, cooperating with a protruding protrusion of the rotor.

As a variant, said crown could be integrated into the rotor. In the two cases, it cooperates with a relief, boss, finger, etc. located respectively on the rotor or disposed fixed relative to the frame, that is to say by example fixed to said frame or to the plate.

According to a possible configuration, this rotor has a central housing delimited by a cylindrical wall placed on a base made up of a flat plate, for example circular.

The actuator, located between the manipulation button and the fixed plate, has a central shaft arranged along the first axis of rotation, dimensions provided so that it can be guided through the slots in the stage, and comprising a perpendicular disc whose radius is such that it can, when the actuator is manipulated along a secondary axis, exert an action on the peripheral stud (s) of said plate, on which it rests in the absence of such manipulation.

It is ultimately the interaction between the central shaft and the fixed stage which imposes a particular design both on the radial slots practiced in the plate and said shaft, so that the guidance mentioned can take place.

The central shaft and the disc are, according to a variant in which the button cannot be used as a push button (i.e. undergo a axial translation), integral with one another.

The disc can be seen as an amplifying organ which transmits, when certain conditions are met (travel possible depending in particular the existence of a radial slot in the direction of movement), the movements along the secondary axes of rotation printed on the button manipulation.

Besides the fixed plate, the actuator cooperates as mentioned previously with the mobile rotor rotating around the first axis.

For this purpose, an end portion of the central shaft adjusts, with a clearance radial, in the central housing of the rotor, said portion being limited by a flange forming an axial stop in contact with the wall, the radial clearance allowing a angular movement of the shaft relative to the secondary axes, means being further provided for securing them in rotation relative to the first axis.

According to its main function, the rotor transmits to the electrical circuit rotary movement around the first axis printed on the manipulation button. For this purpose, according to one possibility, the wall is cylindrical and the portion end of the actuator, also cylindrical, has at least one radial lug which can be inserted into a notch in said wall, in order to secure them in rotation.

This configuration is also favorable in that it allows the transmission of cylindrical movements around secondary axes, another function fulfilled by the rotor.

In fact, preferably, said end portion has two lugs opposite radials fitting into two diametrically opposite notches of the low wall.

In this configuration, the angular movement along the axes secondary is obtained by pressing the flange providing the central shaft with the actuator on the wall housing the end of the latter, creating punctually a pivot axis only during the movement of rotation and when the latter is authorized by the radial slots of the plate, whose ends then act as a stop. Alternatively, these stops, or even the guidance of the displacement relative to these secondary axes, can be managed at the crossing level by the central tree of the switchboard exceeds the manipulation button.

According to another variant, the central shaft and the disc can be secured only in rotation, but left free, relatively to one the other, in translation. In this case, the button can be used as a button pusher free in translation along a central axis.

In this case, preferably, the disc can be guided during the rotations around the secondary axes, between the plate and the array crossed by the central shaft and separating the button from the other elements of the ordered.

The table in question hides the operation of the different control elements, of which only external buttons or joysticks are accessible to the user.

This table and the plate each comprise for example a dome of which the top is drilled for the passage of the central shaft, said domes being coaxial and forming a space in which the disc is guided, equipped with a part of radial ribs with rounded end on its face opposite said table, and on the other hand a domed recess on the other side, said rounded ends and said recess having curvatures corresponding respectively to that of their opposite dome.

The possibility of a relative translational movement between the central shaft and the actuator disc indeed requires precise guidance of the disc to rotations around the secondary axes, which cannot depend on the central tree.

More specifically, the dome of the table and the dome recess of the disc have, at their base, an annular relief having an interior surface whose shape is designed to adapt respectively to the rounding of ribs and dome of the plate.

Said annular reliefs make it possible to achieve correct guiding in reducing stresses, in particular friction, during movements relative of the different parts involved in the connection.

Freedom in shaft / disc translation can be obtained, according to a possible configuration, as follows: the central shaft can include grooves fitting into axial slides of an axial duct crossing the disc, in order to block them in rotation and to allow a translational guidance. Said axial duct also includes a stop limiting the translation in the direction of the operating button.

The rotor is rotated, in this variant, by the disc. This one has for this purpose two tabs oriented parallel to the orifice of guiding the central shaft, and housed in notches in the rotor wall with a view to securing in rotation, the dimensions respective notches and tabs allowing angular travel around the secondary axes of rotation.

There is therefore a clearance between the widths of the notches and those of said legs, so that there is no opposition to rotation, certainly limited, depending on the secondary axes.

The translational freedom of the central shaft in relation to the disc a obviously a goal. This is to allow to activate, via a push strictly axial, at least one other circuit switch. To this end, the free end of the central shaft rests on a pusher guided in translation inside the wall of the rotor, and comprising at least one lug likely to cross the base of the rotor to actuate at least one switch, the rotor having at least one orifice for this purpose. A spring is further provided for recalling said pusher and the central shaft in position non-actuation of the switch or switches, in the absence of solicitation axial of the button.

More specifically, the pusher has a surface which is substantially perpendicular to the axis of the central shaft and two guided side legs in slides made in the inner wall of the wall so that said pusher can be pushed into said wall by action of the shaft central, the spring being interposed between said circular surface and the base of the rotor.

It should be noted that the free end of the central shaft is hemispherical, of so as not to hinder the possibility of movements along the axes secondary.

According to the invention, a second coaxial low wall can be provided. cylindrical surmounted by a boss which cooperates with the crown indexing plate, which is also secured to the base of the rotor.

This second wall takes in this case, the indexing of the rotation, in cooperation with the relief crown of the fixed plate with peripheral studs.

As stated above, one of the main functions of this rotor is to transmit a rotary movement along the first axis. The transmission has of course meaningless compared to the electrical circuit for example arranged on a printed circuit. In this perspective, the base of the rotor includes, associated with its face opposite to that which presents the walls, means of cooperate with components, contacts or tracks of the electrical circuit, aiming to carry out at least one switching during the rotation according to the first axis, said means allowing, where appropriate, the passage of at least one pawl tab.

These means can be various, for example consisting of a plate conductive comprising at least one conductive member projecting from the plane of the plate, able to slide at least temporarily on tracks of the circuit electric to switch the state of at least one contact of said circuit.

Still on the subject of said electrical circuit, it may include microswitches placed under the elastic pads protruding from the platinum. The peripheral pads of the plate are in fact moved according to a path which is approximately straight, i.e. parallel to first axis, in order to exert an adequate action on these switches.

According to a variant, the means for detecting the change of state can be magnetic, and in particular use the Hall effect. Each sensor Hall effect can detect changes to the magnetic field by a movable magnet either in translation like the aforementioned studs, or in rotation if it is linked to the first rotating part. Other solutions, for example optical, are obviously also possible.

The central shaft of the actuator can be arranged in the axis of a diode electroluminescent of the electrical circuit, and be provided in material transparent, for example polycarbonate, to transmit information luminous at the level of the manipulation button.

In the case of the use of a printed circuit, all the components, including including the diode, are arranged on the same face of the circuit. It is a decisive advantage compared to the devices of the prior art, in which we used two-sided printed circuits, with the switching to rotary actuation on the face opposite the button, and the switches generated by action at the periphery of the button managed by an arm crossing the printed circuit and cooperating with a mobile carriage in at least two directions. In general, the light-emitting diode was then placed on another printed circuit placed under the first.

The multiplication of the parts and the assembly then made the organ of much more expensive control than in the configuration of the invention.

• la figure 1 est une vue en perspective d'un pavé de commande de fonctions associées à un siège de véhicule automobile intégrant un organe de commande selon l'invention ;
• la figure 2 montre, toujours en perspective, les différents composants constituant l'organe de commande de l'invention, à l'exception du bouton de manipulation dans une première version à bouton dépourvu de la fonction poussoir ;
• la figure 3 représente les trois éléments mécaniques principaux de la figure précédente ;
• la figure 4 montre le verso de la platine fixe ;
• la figure 5 représente également le verso du rotor, celle qui est mobile en rotation ;
• la figure 6 illustre la liaison mécanique entre l'actionneur et le rotor de la figure précédente ;
• la figure 7 représente en perspective les éléments qui sont directement au contact du circuit imprimé disposé à la base de l'organe de commande de l'invention ;
• la figure 8 est une perspective éclatée d'une configuration selon la seconde variante offerte par l'invention ; et
• la figure 9 est une vue en coupe de cette configuration assemblée.

The invention will now be described in more detail, with reference to the appended figures, for which:

• Figure 1 is a perspective view of a function control pad associated with a motor vehicle seat incorporating a control member according to the invention;
• Figure 2 shows, still in perspective, the various components constituting the control member of the invention, with the exception of the manipulation button in a first version with a button without the push function;
• Figure 3 shows the three main mechanical elements of the previous figure;
• Figure 4 shows the back of the fixed plate;
• Figure 5 also shows the back of the rotor, which is movable in rotation;
• Figure 6 illustrates the mechanical connection between the actuator and the rotor of the previous figure;
• Figure 7 shows in perspective the elements which are directly in contact with the printed circuit arranged at the base of the control member of the invention;
• Figure 8 is an exploded perspective of a configuration according to the second variant offered by the invention; and
• Figure 9 is a sectional view of this assembled configuration.

Referring to Figure 1, the manipulation button (1) of the control of the invention is located substantially in the middle of a plate (2) simultaneously integrating other control keys (3, 4) and a zone (5) conveying information as to the commands implemented.

In such an application, the control member according to the invention allows you to move each element of the vehicle seat beforehand selected using the control keys referenced (3).

This body, without the manipulation button (1) which appears in Figure 1, is shown in more detail in FIG. 2. It comprises, superimposed, an actuator (6), an intermediate plate (7), which is fixed relative to the frame of the assembly (2), a rotor (8) movable in rotation driven by the actuator (6), and a sheet (9) surmounting a printed circuit (10) integrating the different electrical circuit components. These elements have a symmetry of revolution compared to the first axis.

The constitution and function of these different components is shown in more detail in the following figures.

Thus, as appears in Figure 3, the actuator (6) has a central shaft (11) whose upper end is fixed to the button manipulation (1) appearing in figure 1. The lower end of this tree central (11) has a portion (12) of diameter greater than that of the shaft (11) provided with two diametrically opposite cylindrical pins (14, 14 ').

Above the collar, the actuator (6) has a disc (15) surmounted by ribs (16) the operation of which will be explained below. In this hypothesis, the shaft (11) and the disc (15) are secured, or even made in one piece.

The end portion (12) of the shaft (11) is intended to be housed in the housing (17) of the rotor (8), housing (17) which is delimited by a wall (18) having two notches (19, 19 '). These are designed to house the lugs (14, 14 '), so as to block the connection in rotation.

The rotor (8) further comprises an outer wall (20), of thickness higher than the low wall (18).

The plate (7), fixed relative to the frame (2), is interposed between the disc (15) and the portion (12), that is to say above the rotor (8). It includes, in its center, an orifice (22) in the shape of a cross, that is to say having four radial slots of width such that the central shaft (11) can move there. In periphery, this plate (7) has four tabs (23), each provided with its end of a stud (24) protruding with respect to its two faces.

When the control member (1) according to the invention is mounted as this is shown in Figure 2, the periphery of the disc (15) is located at said studs (24), which it overcomes.

When the manipulation button (1) is rotated around an axis secondary perpendicular to the axis (A), by pressing on one of the zones represented in Figure 1 by triangles arranged opposite the button manipulation (1), the disc (15) reflects this rotation to one of the pins (24), which moves by bending the corresponding strip (23). The stud (24) then undergoes a displacement substantially parallel to the axis (A), towards the bottom, and exerts pressure on a protuberance (25) of the ply (9) (see Figure 7) located in the axis of its movement. According to one possibility, the protuberance (25) contains a metal patch forming the movable part of a contact arranged on the printed circuit (10). In this case, pressure device on the manipulation button is like closing a contact of the printed circuit (10). The plate (7) is made of a rigid material, but which has elasticity properties such that each strip comes back in its initial position when pressing the manipulation button (1) stops.

Figure 4 shows this same plate (7) isolated. The cross hole (22) appears more clearly than in Figure 3.

Rotation around a secondary axis is possible due to the play of the portion (12) in the wall (18), but is only possible if the central shaft (11) is guided in a radial slot of the orifice (22) of the plate (7).

The underside of the rotor (8) is shown in Figure 5. It has a metal part (27), which is fixed on said face, and is itself provided with two curved tabs (28, 28 ') which can slide on tracks corresponding of the printed circuit (10), so as to switch the state of minus one contact of said circuit (10). For this purpose, the blades (28,28 ') are slightly bent so as to project beyond the plane of the part (27), the elasticity of the metal allowing sliding contact on the tracks of the printed circuit (10).

The object of Figure 6 is to specify the mechanical connection between the actuator (6) and the rotor (8), as explained above. The lugs (14, 14 '), integrated in the notches (19, 19'), ensure the connection rotation. This figure shows the existence of four ribs (16) of stiffening of the disc (15) of the actuator (6).

The purpose of Figure 7 is to show more particularly the electrical interactions that take place at the base of the organ of command of the invention. Thus, the conductive plate (27), in principle fixed to the rotor (8), is here represented directly on the printed circuit (10) with which it interacts with.

Similarly, the ply of flexible and elastic material (9), which comprises the occurrence of moving parts of the electrical circuit, for example contact elements, is shown in the position allocated to it relatively on the one hand to the printed circuit (10), and on the other hand to the plate metallic (27). A light emitting diode (not shown) can by example be placed in the center of the plate (27), in the axis of the shaft (11), which will then be made of a light-conducting material.

In FIGS. 8 and 9, the variant in which the disc (15) is free in translation with respect to the tree (8) is presented. The references of the different components found in the previous figures remain the same. In fact, in this new variant, the main changes relate to the existence of a pusher (29) disposed in the axis of the shaft (8), and on the upper surface of which the latter rests.

This pusher (29) has two lateral tabs (30, 30 ') which can slide in slides (31, 31') provided in the internal wall (18).
As in the previous variant, this wall (18) has notches (19, 19 ') provided to accommodate this time the tabs (32, 32') which protrude towards the bottom of the disc (15). As indicated above, the width of these legs (32, 32 ') is less than the width of the notches (19, 19'), so as to absorb, for example, an angular movement around an axis of rotation passing through said legs (32, 32 ') and perpendicular to the primary axis of rotation.

A spring (33) is interposed between the pusher (29) and the bottom of the rotor (8). This is provided with holes allowing the passage of the legs (30, 30 '), in view to carry out switches, by axial pushes on the button (1), to microswitches placed on the printed circuit (10).

The metal part (27) with curved tongues (28, 28 ') itself has two orifices (34, 34 ') for the passage of the legs (30, 30').

The operation is deduced in particular from FIG. 9.

The shaft (8) rests on the pusher (29) by means of its hemispherical free end (40). This geometric peculiarity of the end of the shaft (8) allows rotations around axes secondary of the disc (15), which is guided for this purpose between the domes (35, 36) projecting respectively from the fundamental wall (2) and the plate (7).

To reduce friction forces, guidance is more specifically between on the one hand an annular bead (37) projecting from the inner wall of the dome (35), and in contact with which the ribs (16) of the disc (15), and on the other hand an annular bead (38) projecting from domed recess (39) formed in the bottom of the disc, and which is in contact the dome (36) of the plate (7).

When the user exerts an axial force on the button (1), the pusher (29), guided in the wall (18) of the rotor (8) exerts a downward action counteracted by the spring (33), until the free ends of the legs (30, 30 ') can exercise their electrical switching action by cooperation with the printed circuit (10). Upon termination of the solicitation, the spring (33) recalls the shaft (8) and the pusher (29) in the initial rest position. The rotary and actuation functions along the secondary axes are identical to those described for the first variant.

The control unit described above does not of course constitute than a possible example of this invention. This includes other variants of shapes and configurations that are within the reach of man from art.

Claims (32)

Control member provided with a rotary manipulation button around a first axis and which can be at least rotated around at least one secondary axis contained in a plane perpendicular to the first axis, by elastic support on at least one location located in the vicinity of the periphery of the manipulation button, and of an electrical circuit provided with components able to switch according to the stresses applied to the button, characterized in that the latter is secured to an actuator which transmits the manipulation movement which is printed on said components, which are arranged on one side of an electrical circuit support facing said button, transmission effected via at least two parts forming an interface between said actuator and said circuit, on the one hand, a rotor integral in rotation with the actuator along the first axis, the mechanical connection between them being provided to allow relative movements according to the or the secondary axes, and on the other hand a plate comprising elastic means of connection with the electrical circuit, which are arranged substantially in line with the peripheral support locations. Control device according to the preceding claim, characterized in that the support of the electrical circuit is a printed circuit. Control device according to one of the preceding claims, characterized in that the fixed plate takes the form of a thin plate from which protrude studs parallel to the first axis, in number corresponding to the number of peripheral support locations , said studs projecting from at least one side of the plate and being arranged at the free end of at least one flexible tab for each support location made in the plate, the tab or tabs being made of an elastic material their allowing to return to the rest position after action on the studs. Control member according to the preceding claim, characterized in that the flexible tongues are two in number superimposed for each support location. Control member according to one of claims 3 and 4, characterized in that the plate comprises means for guiding the actuator towards the pads. Control member according to one of claims 3 to 5, characterized in that the plate comprises, in its central zone, a complex orifice formed by a number of converging radial slots at most equal to the number of pads / tongues arranged at the periphery , and developing towards them. Control member according to the preceding claim, characterized in that the number of radial slots is equal to the number of pads, and in that said slots develop in the direction of said pads. Control device according to any one of the preceding claims, characterized in that it includes means for indexing the rotational position of the rotor. Control member according to the preceding claim, characterized in that the plate comprises on one side, at the immediate periphery of the ends of said slots, a crown with reliefs and depressions, cooperating with a protruding protrusion of the rotor. Control member according to claim 8, characterized in that the rotor comprises a crown with reliefs and depressions, cooperating with an elastic finger disposed fixed relative to the frame of the control member. Control device according to any one of the preceding claims, characterized in that the rotor has a central housing delimited by a cylindrical wall placed on a base consisting of a flat plate. Control member according to one of claims 7 to 11, characterized in that the actuator comprises a central shaft disposed along the first axis of rotation, of dimensions provided so that it can be guided in the slots made in the plate, and comprising a perpendicular disc whose radius is such that it can, when the connecting element is manipulated along a secondary axis, exert an action on the peripheral stud (s) of said plate, on which it rests in the absence of 'such manipulation. Control member according to the preceding claim, characterized in that the central shaft and the disc are integral with one another. Control member according to one of claims 11 and 12, characterized in that an end portion of the central shaft adjusts with a radial clearance in the central housing of the rotor, said portion being limited by a flange forming axial stop in contact with the wall, the radial clearance allowing angular movement of the shaft relative to the secondary axes, means being further provided for securing them in rotation relative to the first axis. Control member according to the preceding claim, characterized in that the wall is cylindrical and the end portion of the connecting element comprises at least one radial lug which can be inserted in a notch formed in said wall in order to secure them in rotation. Control member according to the preceding claim, characterized in that said end portion comprises two opposite radial lugs fitting into two diametrically opposite notches in the wall. Control unit according to claim 12, characterized in that the central shaft and the disc are integral in rotation and free in translation. Control unit according to the preceding claim, characterized in that the disc is guided during rotations around the axes secondary, between the board and a table separating the button from the others elements of the control member, and crossed by the central shaft. Control member according to the preceding claim, characterized in that the table surmounted by the button and the plate each comprise a dome whose apex is pierced for the passage of the central shaft, said domes being coaxial and forming a space in which is guided the disc, equipped on the one hand with radial ribs with rounded end on its face opposite said table, and on the other hand with a dome recess on the other face, said rounded ends and said recess having corresponding curvatures respectively to that of their opposite dome. Control member according to the preceding claim, characterized in that the dome of the wall surmounted by the button and the dome recess of the disc comprise, at their base, an annular relief having an outer surface whose shape and designed to adapt respectively to the rounding of the ribs and to the dome of the plate. Control member according to any one of claims 17 to 20, characterized in that the central shaft has grooves which fit in axial slides of an axial duct passing through the disc, in order to block them in rotation and allow guiding in translation, said conduit comprising a stop limiting translation in the direction of the button. Control member according to the preceding claim, characterized in that the disc has two tabs oriented parallel to the guide hole of the central shaft, and housed in notches made in the wall of the rotor for securing in rotation , the respective dimensions of the tabs and the notches allowing angular movement around the secondary axes of rotation. Control member according to one of claims 17 to 22, characterized in that the free end of the central shaft rests on a pusher guided in translation inside the internal wall of the rotor, and comprising at least one tab capable of crossing the base of the rotor in order to actuate at least one switch, the rotor comprising at least one orifice for this purpose, a spring being provided to return said pusher and the central shaft to the position of non-actuation of the switch or switches the absence of axial stress on the button. Control member according to the preceding claim, characterized in that the pusher has a surface substantially perpendicular to the axis of the central shaft and two lateral tabs guided in slides made in the inner wall of the wall so that said pusher can be pressed into said wall by the action of the central shaft, the spring being interposed between said circular surface and the base of the rotor. Control member according to one of claims 17 to 24, characterized in that the free end of the central shaft is hemispherical. Control member according to one of claims 11 to 25, characterized in that a second coaxial low wall of cylindrical appearance surmounted by a boss cooperating with the indexing ring of the plate is also integral with the base of the rotor. Control member according to the preceding claim, characterized in that the base of the rotor comprises, associated with its face opposite to that which presents the walls, means for cooperating with components, contacts or tracks of the electrical circuit aimed at producing at least one switching during rotation along the first axis, and allowing the passage of at least one tab of the pusher. Control member according to the preceding claim, characterized in that said means consist of a conductive plate comprising at least one conductive member projecting from the plane of the plate, capable of sliding at least temporarily on tracks of the electrical circuit to switch the state of at least one contact of said circuit. Control device according to any one of claims 3 to 28, characterized in that the electrical circuit includes switches arranged under the pads of the plate. Control device according to any one of the preceding claims, characterized in that the electric circuit comprises means for magnetic detection of the movements of the control device, for example based on Hall effect sensors. Control device according to any one of the preceding claims, characterized in that the electrical circuit includes means for optical detection of the movements of the control device. Control device according to any one of Claims 12 to 31, characterized in that the electrical circuit comprises a light-emitting diode arranged in the axis of the central shaft of the actuator, which is made of a material which conducts the emitted light by the diode towards the manipulation button.

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