DE102021209751A1 - MAGNETIC CONTROL SYSTEM FOR A PUSH BUTTON, PUSH BUTTON AND RELEVANT CONTROL PANEL - Google Patents

Abstract

Control system (3) for a push button (2) for activating one or more electrical or electronic circuits, comprising: a fixed portion (4) suitable to be connected to a supporting structure (25) of the push button (2); a mobile part (5) capable of being associated with a button (20) of at least one pushbutton (2), moving with it and moving relative to the fixed part (4) via guide systems; and a feedback system (6) capable of generating a sudden change in force upon displacement of the movable portion (5) with respect to the fixed portion (6). The movable section (5) is suitable for changing over from a rest position to a switched position. The feedback system (6) is magnetic and comprises: a magnet (62) associated with one of the fixed portion (4) and the movable portion (5); a plate (64) of ferromagnetic material associated with the other of the fixed portion (4) and the movable portion (5); and a spacer (66) positioned between the magnet (62) and the plate (64). The spacer (66) is adapted to define the minimum distance (d) between the plate (64) and the magnet (62) to which a known attractive force acts. The movable section (5) increases the distance (D) between the plate (64) and the magnet (62) during the transition between the rest position and the switched position.

Description

The present invention relates to a magnetic control system for push buttons, which is used in particular in the automotive or marine field.

Furthermore, the present invention relates to a push button, which includes the control system according to the invention, as well as a control panel, which includes one or more push buttons and/or a control system according to this invention.

Buttons, consoles and/or control panels are known which comprise a control system which in turn comprises a feedback system which is suitable for generating a certain tactile feedback for the user during the application of a force on a button. Such feedback systems are capable of generating a change in force to displace a moveable portion with respect to a fixed portion that is perceptible to the user.

In the vehicle sector, it is required that when a user acts on a button, he/she perceives a jolt caused by a change in the force to be applied to move the button. This change is preferably perceived and defined as a jerk, which corresponds to a more or less rapid reduction in the force to be applied. Some applications call for a quick jerk with a sudden reduction in force to perform a relatively short keystroke.

Feedback systems are known which comprise an elastic element, such as a metal foil and/or a silicone dome, capable of deforming after a force is applied thereto, storing energy that is released when a certain stroke and/or a certain applied force is released, thereby enabling the displacement of the movable portion to be accelerated, allowing the user to perceive a sudden decrease in the force to be applied to displace the key.

These solutions provide for a continuous deformation of the elastic element with each cycle of use of the button.

Over time, these stresses cause the elastic element to wear and the consequent deterioration in the performance of the elastic element, causing a change in the tactile sensation or sensation perceived by the user. This type of feedback system is also delicate and susceptible to mechanical stresses that could cause malfunctions or affect use.

In certain motor vehicle areas, for example in the area of commercial vehicles such as box vans, trucks, road tractors, etc., a very long service life of the components located in the driver's cab is required. In particular, it is required that the buttons and control panels withstand a number of cycles that is at least twice that of other vehicles such as passenger cars. Thus, in the field of vehicles, particularly in the field of commercial vehicles, it is increasingly necessary to be able to guarantee a very high number of gear changes with consistent performance, thereby guaranteeing high reliability and longevity.

In addition, in the field of vehicles, particularly in the field of commercial vehicles, it is increasingly required that the buttons located in the cab and/or the control systems contained therein do not cause vibrations, noise and/or aesthetic defects due to external stresses such as vibrations, caused by the vehicle itself when stationary or while driving.

Furthermore, in the field of commercial vehicles, technical solutions are increasingly being sought in which incorrect shifting operations are prevented and the jerk sensation perceived by the user when the force is reduced after the shifting operation can be clearly and distinctly perceived even with short button strokes.

The currently known solutions do not make it possible to ensure the longevity of the control systems and long-term maintenance of the performances in generating the haptic feedback for the user, especially in the case of a large number of switching cycles envisaged.

In addition, none of the known solutions makes it possible to obtain a clear feeling perceived by the user even with very short key strokes, even less than 1 mm.

Finally, with the currently known solutions, it is very complex to modify the force-displacement curve of a control system depending on the project specifications and/or to compensate for any manufacturing tolerances of the push button components, thus ensuring uniformity of the devices produced.

It is an object of the present invention to solve these and other technical problems by implementing a control system with a novel magnetic feedback system.

One aspect of the present invention relates to a push button control system having the features of appended claim 1.

Another aspect of the present invention relates to a push button having the features of appended claim 8.

Yet another aspect of the present invention relates to a control panel having the features of appended claim 10.

• - 1 eine mögliche, beispielhafte und nicht einschränkende Ausführungsform eines Bedienfelds, das mindestens einen Drucktaster und/oder mindestens ein Steuerungssystem gemäß der vorliegenden Erfindung umfasst;
• - 2A und 2B einige Merkmale des erfindungsgemäßen Rückmeldesystems; insbesondere zeigt 2A in stilisierter Form ein erfindungsgemäßes Rückmeldesystem; 2B zeigt eine Grafik mit der Kraft-Weg-Kennlinie eines Rückmeldesystems gemäß 2A im Vergleich zur Kennlinie der Anziehungskraft zwischen einem Magneten und einer Platte;
• - 3 in einer axonometrischen Ansicht einen erfindungsgemäßen Drucktaster im Schnitt entlang einer vertikalen Ebene, in der im Schnitt ein erfindungsgemäßes Steuerungssystem zu erkennen ist.

The characteristics and advantages of the control system, the push button and the control panel according to the present invention will be made clearer by the following description of different possible embodiments with reference to the attached figures. Show it:

• - 1 a possible, exemplary and non-limiting embodiment of a control panel comprising at least one push button and/or at least one control system according to the present invention;
• - 2A and 2 B some features of the feedback system according to the invention; in particular shows 2A in stylized form, a feedback system according to the invention; 2 B shows a graphic with the force-displacement characteristic of a feedback system 2A compared to the characteristic curve of the attractive force between a magnet and a plate;
• - 3 in an axonometric view, a push button according to the invention in section along a vertical plane in which a control system according to the invention can be seen in section.

With reference to said figures, reference number 1 refers to a control panel as a whole, while reference number 2 refers to a push button as a whole. Finally, reference number 3 refers to a control system according to the invention as a whole.

The control system 3 according to the invention is particularly suitable for use in pushbuttons 2 for activating one or more electrical or electronic circuits. The control system 3 according to the invention comprises: a fixed portion 4 suitable to be connected to a supporting structure 25 of the push button 2; a mobile part 5 suitable for being associated with a button 20 of at least one push button 2, moving with this button 20, for example fixed, and also moving with respect to the fixed part 4 by guide systems, not shown emotional; and a feedback system 6 capable of generating a sudden change in force upon displacement of the movable portion 5 with respect to the fixed portion 4. In particular, the feedback system 6 makes it possible to obtain a variation in the force to be applied to the mobile portion 5 to move it along its stroke. This feedback system 6 makes it possible to obtain a desired force/displacement function of the movable section 5.

More specifically, the movable portion 5 is capable of changing from a rest position to a switched position. For the purposes of the present description, the term rest position is understood to mean the position that the control system 3 and in particular the movable section 5 assumes when no external force is applied to the control system 3 itself, in particular to the movable section 5, while under the Term switching position is understood to mean the position that the control system 3 and in particular the movable section 5 assumes when an external force is applied to the control system 3, in particular to the movable section 5, and moves it in relation to the fixed section 4 and specifically it leads to a mechanical end stop.

In the preferred embodiment of the control system 3, the feedback system 6 is magnetic. Specifically, the magnetic feedback system 6 includes: a magnet 62, a plate 64, and a spacer 66.

The magnet 62 is associated with one of the fixed portion 4 and the movable portion 5 .

Plate 64 includes at least a portion of a ferromagnetic material such as steel. The plate 64 is associated with the other of the fixed portion 4 and the movable portion 5, particularly with respect to the one to which the magnet 62 is associated.

The spacer 66 is positioned between the magnet 62 and the plate 64 . In particular, spacer 66 is adapted to define a minimum distance "d" between plate 64 and magnet 62 . A known attractive force acts between the plate 64 and the magnet 62, which are located a minimum distance "d".

Generally, the force of attraction between a magnet 62 and a plate 64 can be determined by one skilled in the art given the intrinsic characteristics and dimensions of the magnet 62 and a distance "D" between the magnet 62 and the plate 64 such that the force of attraction can be determined between the magnet 62 and the plate 64 for the minimum distance "d".

The control system 3 according to the invention is designed in such a way that the movable section 5 increases a distance “D” between the plate 64 and the magnet 62 during the transition between the rest position and the switched position. In particular, during the transition between the rest position and the switched position, the distance "D" between the plate 64 and the magnet 62 increases with respect to the minimum distance "d". Increasing distance "D" causes the attractive force acting between plate 64 and magnet 62 to decrease.

This solution makes it possible to generate a change in the force perceived by the user when displacing the mobile portion 5 by pressing the button 20 of the push button 2, in particular a sudden change in force.

In addition, the present invention avoids the use of elastic elements that must be deformed in order to generate such a sudden change in force, with the consequent advantage of ensuring longer durability of the control system 3 by maintaining the characteristics of tactile perception that the perceived by the user when displacing the movable section 5, are maintained unchanged over time, even after a high number of switching cycles of the control system 3.

The present solution makes it possible to obtain the desired tactile effect even when the stroke that the movable portion 5 and consequently the pushbutton 2 associated with it can perform is small.

The control system 3 according to the invention can, for example, be designed in such a way that the movable section 5 has a stroke of less than 1 mm, for example a stroke of less than 0.7 mm, for example between 0.6 mm and 0 .4 mm, accomplished. Although the stroke traveled by this movable portion 5 is short, all the technical effects mentioned above can be obtained.

In addition, the present solution makes it possible, in general, to control and modify the characteristics of the force-displacement curve according to the needs, and to significantly reduce the hysteresis effect in the transition between the two operating positions.

In a preferred, exemplary and non-limiting embodiment of the control system 3 according to the invention, the abrupt change in force during the displacement of the movable section 5 with respect to the fixed section 6, in particular during the transition from the rest position to the switching position, corresponds to a decrease in force of at least 25%. after reaching a peak force value. This decrease is easily detectable by the user and thus gives the desired tactile effect.

If further possible embodiments of the control system 3 according to the invention are discussed in more detail, the magnet 62 is preferably a permanent magnet. In an alternative embodiment, the magnet 62 is an electromagnet.

In a preferred, exemplary and non-limiting embodiment of the control system 3 according to the invention, the magnet 62, preferably a permanent magnet or an electromagnet, is associated with the fixed portion 4, while the plate 64 is associated with the movable portion 5. The spacer 66 is advantageously made of silicone material. This embodiment makes it possible to associate the element of the feedback system 6 with the smallest dimensions and the lowest overall weight with the mobile part 5, thus reducing the inertia of the mobile part 5.

This solution also makes it possible to suitably fix the magnet 62, thereby preventing it from being able to move unintentionally, for example by vibrating during use of the vehicle in which this control system 3 is installed.

In an alternative, exemplary and non-limiting embodiment of the control system 3 according to the invention, the magnet 62 is a permanent magnet or associated with the movable portion 5, while the plate 64 is associated with the fixed portion 4. The spacer 66 is advantageously made of silicone material.

In principle, the spacer 66 can also be made of other materials with other elastic properties. This spacer 66 can alternatively be defined by means of mechanical end stops that the are appropriately associated with the fixed portion 4 so that movements on the movable portion 5 which reduce the distance "D" between the magnet 62 and the plate 64 to a value below the minimum distance "d" are prevented. The spacer 66 is preferably made of an elastic material, for example silicone, so that the return to the rest position of the movable section 5 is cushioned when no external force is applied to this movable section 5, and the magnetic attraction force between the magnet 62 and the Plate 64 tends to bring them closer together, accelerating displacement, until the minimum distance "d" defined by spacer 66 is reached.

The spacer 66 generally prevents the magnet 62 and plate 64 from approaching beyond a distance "D" that is less than the minimum distance "d".

The magnet 62 and the plate 64 can preferably change their own distance "D" along an axis, such as an axis "Z".

Preferably, the movable portion 5 moves with respect to the fixed portion 4 by performing a linear movement, for example along an axis, for example along the "Z" axis.

• - Erhalten eines Steuerungssystems 3, das einen feststehenden Abschnitt 4, einen beweglichen Abschnitt 5 und ein Rückmeldesystem 6 umfasst;
• - Erhalten eines Magneten 62, beispielsweise eines Permanentmagneten, mit bekannten physikalischen und strukturellen Eigenschaften und einer Platte 64, die im Rückmeldesystem 6 enthalten ist;
• - Bestimmen der Kennlinie für die Anziehungskraft zwischen Magnet 62 und Platte 64 in Abhängigkeit vom Abstand „D“ zwischen ihnen;
• - Auswählen eines Mindestabstands „d“ zwischen dem Magneten 62 und der Platte 64, wodurch die Ruhelage des beweglichen Abschnitts 5 definiert wird;
• - Bereitstellen eines Distanzstücks 66 mit der Dicke gleich dem Mindestabstand „d“, das zwischen dem Magneten 62 und der Platte 64 anzuordnen ist;
• - Bestimmen, auf der Kennlinie für die Anziehungskraft, der Aktivierungskraft des Steuerungssystems 3;
• - Festlegen des maximalen Hubs des beweglichen Abschnitts 5, wodurch ein Endanschlag definiert wird.

A possible method for implementing the control system 3 according to the invention comprises the following steps:

• - obtaining a control system 3 comprising a fixed section 4, a movable section 5 and a feedback system 6;
• - obtaining a magnet 62, e.g. a permanent magnet, with known physical and structural characteristics and a plate 64 included in the feedback system 6;
• - Determination of the characteristic curve for the attraction force between magnet 62 and plate 64 as a function of the distance "D" between them;
• - choosing a minimum distance "d" between the magnet 62 and the plate 64, which defines the rest position of the mobile portion 5;
• - providing a spacer 66 of thickness equal to the minimum distance "d" to be placed between the magnet 62 and the plate 64;
• - determining, on the attraction force characteristic, the activation force of the control system 3;
• - Defining the maximum travel of the moving section 5, thereby defining an end stop.

In this way it is possible to obtain the desired feeling with a sudden change in force.

2 B shows a force-displacement diagram of the control system 3 in a possible embodiment, which is superimposed on a characteristic curve for the attraction force of the arrangement that is implemented. In this figure, the minimum distance "d" can be seen, which defines the activation force of the control system 3, in particular the force that must be applied in order to succeed in separating the magnet 62 and the plate 64. The diagram shows the stroke that the movable section 5 can perform when the magnet 62 and the plate 64 are separated from each other.

In a preferred embodiment of the control system 3 according to the invention, the feedback system 6 is adjustable. In particular, this feedback system 6 includes a calibration system 61. The calibration system 61 is able to change, preferably increase, the distance "D" between the plate 64 and the magnet 62 in relation to the minimum distance "d" defined by the spacer 66. especially at rest. This solution makes it possible to change the distance "D" between the magnet 62 and the plate 64 so that any changes in the force-displacement characteristic with respect to the desired or expected one caused by the manufacturing tolerances of the parts of the control system 3 and/ or the push button 2 in which the control system 3 is used, can be compensated for, thereby ensuring uniformity of the control systems 3 that can be implemented.

In a preferred embodiment of the control system 2 according to the invention, the magnet 62 is housed in a housing 42 made in the fixed portion 4 . In this embodiment, the calibration system 61 is capable of changing the position of the magnet 62 within the receptacle 42 . In a possible embodiment of the calibration system 61 , a threaded pin is placed in the housing 42 , suitable for changing its penetration into the housing 42 , which causes the magnet 62 to move in the housing 42 .

In a preferred, exemplary and non-limiting embodiment, magnet 62 is cylindrical. In a possible execution shape, the side surface of the cylindrical magnet 62 is at least partially threaded so that it can be coupled with a mating thread 42 formed in the receptacle 42, so that by turning the magnet 62, for example with a special wrench, the position of the magnet 62 within the receptacle 42 and consequently the distance "D" to the plate 64 can be changed.

The control system 3 according to the invention is particularly suitable to be used in a push button 2 for vehicles or boats, in which this push button 2 is suitable for activating one or more electrical or electronic circuits. The push button 2 preferably comprises: a support structure 25 suitable to be connected to a control panel 1; and at least one button 20. This button 20 can be acted on by a user to activate one or more functionalities associated with one or more of the electrical and/or electronic circuits, for example vehicle heating, window defrosting, seat heating/cooling functionalities, air conditioning, interior lights, vehicle lights, speaker volume control, etc. These electrical and/or electronic circuits, not shown, are at least partially embodied on one or more printed circuit boards suitably housed within support structure 25.

The push button 2 thus comprises at least one electrical and/or electronic circuit which is suitable for switching on the at least one button 20 depending on the action of the user.

The button 20 is adapted to move, thereby performing a linear motion, such as along an axis, such as a "Z" axis, or a rotary motion, such as about an axis perpendicular to the "Z" axis.

The pushbutton 2 according to the invention, which comprises a control system 3 according to the invention, causes the button 20 to be held in position by the attractive force acting between the plate 64 and the magnet 62 of the feedback system 6 .

The control system 3 according to the invention causes the movable section 3, which is mechanically connected to the button 20, to be prestressed since a magnetic force acts on it. The button 20 therefore remains in position, avoiding undesirable movements, such as vibrations.

The pushbutton 2 and the control system 3 according to the invention are particularly suitable for being contained in a control panel 1 for vehicles.

The control panel 1 according to the invention is particularly suitable for use in vehicles or boats. This control panel 1 is suitable to be placed in a passenger room or a cabin of the vehicle. The control panel 1 according to the invention comprises one or more pushbuttons 2, at least one of which is a pushbutton 2 according to the invention and/or comprises a control system 3 according to the invention.

The control panel 1 may comprise a plurality of pushbuttons 2, each having its own button 20, or it may comprise a plurality of pushbuttons 2 all sharing a single button 20 in the form of an array, the different areas of which are assigned to the individual pushbuttons 2 are. In this embodiment, via a capacitive system, it is possible to detect approaching and/or touching a portion of the panel of the control panel 1 and consequently to activate the respective push button 2, which in turn switches the corresponding electric/electronic circuit. This field of the control panel 1 is adapted to move, thereby performing a linear movement, for example along an axis, for example a “Z” axis, or to perform a rotary movement, for example about an axis perpendicular to the “Z” axis.

1 shows a possible embodiment of a control panel 1, which includes a plurality of pushbuttons 2 and at least one control system 3 according to the invention. In this embodiment, there is a field defining the key for the plurality of push buttons 2 associated with different functionalities. In the embodiment it can be seen that different pushbuttons 2 are assigned different functions or functionalities, such as controlling the temperature or the loudspeakers, which can be identified, for example, by means of a suitable identification.

2A 1 shows, in a stylized form, a feedback system 6 according to the invention in a very general manner. In this figure, a magnet 62 comprising a north and a south pole and a plate 64 can be seen, which are arranged at a minimum distance "d". This distance may be filled with a spacer 66 so that the magnet 62 and plate 64 cannot approach beyond a distance "D" less than the minimum distance "d", for example. To what has been said An attractive force acts on the system which tends to bring the plate 64 closer to the magnet 62 and vice versa. The spacer 66 prevents the distance "D" between the plate 64 and the magnet 62 from decreasing. The displacement of the movable portion 5 with respect to the fixed portion 4 of the control system 3, in which the feedback system 6 is incorporated, has a direction opposite to the force of attraction between the magnet 62 and the plate 64.

2 B shows a diagram in which the force / displacement characteristic of a feedback system 6 according to 2A is shown in comparison to the characteristic curve of the attractive force between a magnet 62 and a plate 64.

Using the diagram in 2 B an embodiment can be determined in which the minimum distance "d" is 0.6 mm and the attractive force acting at this distance is 12 N/m, thereby defining the activation force of the control system 3.

The diagram also makes it possible to determine the variable progression of the force that is to be applied in order to allow the movable section 5 to move in relation to the fixed section 4 .

The figure shows a change in applied force after a peak at about 12 N/m as the distance "D" between magnet 62 and plate 64 increases from the minimum distance "d" of 0.6 mm to 1.2 mm and thus defines the end stop.

From this figure it can be understood that the user is only able to remove the plate 64 from the magnet 62 or vice versa once he has overcome the attractive force between the plate 64 and the magnet 62 . As soon as this force is exceeded, the control system 3 and in particular the movable section 5 begins to change from the rest position to the switched position. The user will feel a jerk with a decrease in the force required to displace the movable section 5 and thus obtain the desired feeling.

On reaching the end stop, the movable section does not move any further and if the user were to continue to exert force, he would feel an increase in the force required without any appreciable movement of the movable section 5. After the user stops applying the force, the magnetic attraction between the plate 64 and the magnet 62 returns the control system 3 to the rest position. This solution makes it possible to significantly reduce the hysteresis effect between the transition from the rest to the engaged position and the reverse transition, which is typical of prior art systems and is due to the deformation of an elastic element. The diagram shows the reduction in force or jerk that can be obtained with a feedback system 6 according to the invention.

3 shows, in an axonometric view, a push button 2 according to the invention in section along a vertical plane in which a control system 3 according to the invention can be seen in section.

In the embodiment shown, the push button 2 comprises a button 20 mechanically connected to the movable portion 5 which houses the plate 64. The button 20 is capable of moving along the "Z" axis. In this embodiment, the magnet 62 is accommodated in a receptacle 42 of the stationary section 4 .

In this embodiment there is a calibration system 61 which, by means of suitable threads, allows the magnet 62 to be displaced inside the housing 42, for example using a suitable key, for example an Allen key.

The plate 64 is held at least the minimum distance "d" by the spacer 66 positioned between the magnet and the plate 64 . This spacer 66 is made of silicone material and is shaped to form a receptacle in which a portion of the magnet 62 can be received.

Action of a user on the button 20 of the push button 2 activates the control system 3 which causes the plate 64 to be able to move away from the magnet 62 after the attractive force acting between the magnet 62 and the plate 64 has been overcome. This movement is perceived by the user as a sudden change in force when the button 20 is displaced.

In the figure it can be seen that the fixed portion 4 of the control system 3 is fixed to the support structure 25 of the push button 2, for example with fixing means, in particular screws.

In the embodiment shown, a special hole can be seen, made both in the support structure 25 and in the control system 3, so that the calibration system 61 can be easily acted on to adjust it.

The present invention makes it possible to overcome the typical wear and tear drawbacks of the currently known solutions.

The present invention allows the haptic feedback characteristics perceptible by the user to remain unchanged over time, avoiding any degradation in feel normally associated with prior art solutions.

The present invention prevents deformation and/or friction between the components of the control system 3 and the feedback system 6 and thereby enables a lower hysteresis in the switching cycle of the control system 3.

The present invention allows the force-displacement characteristics of the control system 3 to be quickly and easily customized based on design specifications while the structural dimensions of the control system 3 remain essentially unchanged.

The present invention makes it possible to calibrate the control system 3 quickly and easily, even after assembly, in order to compensate for any manufacturing tolerances in the individual components of the control system 3, the push button 2 and/or the control panel 1.

The present invention makes it possible to give the user haptic feedback with a sudden change in force even when the stroke of the key 20 is very short.

The present invention makes it possible to ensure that the moving portion 5 of the control system 3 and consequently the button 20 of the associated push button 2 is subjected to a preloading force capable of holding this button 20 in position and avoiding possible unwanted vibrations and/or To avoid movements of the button 20 of the push button 2.

The present solution makes it possible to obtain a force-displacement curve in which the maximum value of the force is at the level of the pressing force that the user applies to the button 20, so that a quick switching of the push button 2 is possible and false contacts and /or switching operations are prevented.

Alternative embodiments, not shown and/or described, which will be apparent to those skilled in the art in view of the present description and attached figures, are to be considered as falling within the scope of the present invention.

Reference List

1

control panel

2

push button

20

button

25

bracket structure

3

Control System, Fixed Section, Recording

5

Movable section

6

feedback system

61

calibration system

62

magnet

64

plate

66

spacer

"d"

minimum distance

"D"

distance

"Z"

axis

Claims (10)

Control system (3) for a pushbutton (2) for activating one or more electrical or electronic circuits, comprising: - a fixed portion (4) suitable to be connected to a supporting structure (25) of the pushbutton (2); - a mobile part (5) capable of being associated with a button (20) of at least one pushbutton (2), moving with this button (20) and moving, via guide systems, with respect to the fixed part (4) moved; - a feedback system (6) capable of generating a sudden change in force on displacement of the mobile portion (5) with respect to the fixed portion (4); wherein the movable portion (5) is adapted to change from a rest position to a switching position; wherein the feedback system (6) is magnetic; the magnetic feedback system (6) comprising: - a magnet (62) associated with one of the fixed portion (4) and the movable portion (5); - a plate (64) comprising at least one portion made of a ferromagnetic material and associated with the other among the fixed portion (4) and the movable portion (5); and - a spacer (66) disposed between the magnet (62) and the plate (64); the spacer (66) being adapted to define a minimum distance (d) between the plate (64) and the magnet (62) to which a known Anzie hunger acts; the movable section (5) increasing a distance (D) between the plate (64) and the magnet (62) during the transition between the rest position and the switched position. system after claim 1 in which the magnet (62) is a permanent magnet or electromagnet and is associated with the fixed portion (4), while the plate (64) is associated with the movable portion (5); wherein the spacer (66) is made of silicone material. system after claim 1 in which the magnet (62) is a permanent magnet and is associated with the movable portion (5), while the plate (64) is associated with the fixed portion (4); wherein the spacer (66) is made of silicone material. A system according to any one of the preceding claims, in which the feedback system (6) is adjustable, comprising a calibration system (61) capable of measuring the distance (D) between the plate (64) and the magnet (62) in Increase reference to the minimum distance (d) defined by the spacer (66). system after the claims 2 and 4 in which the magnet (62) is housed in a housing (42) made in the fixed portion (4); the calibration system (61) being adapted to change the position of the magnet (62) within the receptacle (42). system after claim 1 , in which the movable section (5) performs a stroke of less than 1 mm during the transition between the rest position and the switched position. system after claim 1 , in which the sudden change in force during the displacement of the movable section (5) in relation to the fixed section (6) during the transition from the rest position to the switching position corresponds to a decrease in force by at least 25% after a peak force value has been reached. Push button (2) for vehicles or boats suitable for activating one or more electrical or electronic circuits; the push button (2) comprising: - a supporting structure (25) suitable to be connected to a control panel (1); - at least one button (20) on which a user can act to activate one or more functionalities; - at least one electrical and/or electronic circuit capable of switching as a function of user action on the at least one button (20), one or more of these functionalities being associated with the at least one electrical and/or electronic circuit; wherein the push button (2) according to at least one control system (3). claim 1 includes. push button after claim 8 wherein the button (20) is held in position by the attractive force acting between the plate (64) and the magnet (62) of the feedback system (6). Control panel (1) for vehicles or boats, suitable to be placed in a passenger compartment or cabin of a vehicle; wherein the control panel (1) comprises: one or more pushbuttons (2), at least one of which is a pushbutton (2). claim 8 is; and/or a control system (3). claim 1 .

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