FR2958862A1 - Controller for game i.e. video game, that is used to simulate driving of vehicle, has magnetic sensor that is integrated in rotation to activator, and permanent magnet that is integrated in rotation to fixed part - Google Patents

Abstract

The controller (1) has an activator (2) that is movable in rotation with respect to a fixed part (3) to simulate control of rotation of a steering column of a simulated vehicle. A detecting unit detects rotational displacement of the activator, where the detecting unit has a magnetoresistive effect or Hall effect detection assembly that comprises a permanent magnet e.g. crown magnet, and a magnetic sensor. The sensor is integrated in rotation to the activator, and the permanent magnet is integrated in rotation to the fixed part. The activator is chosen from a hand wheel, handlebar or ship steering wheel.

Description

Steering column game controller with rotational angle measured by Hall effect or magnetoresistive effect

FIELD OF THE DISCLOSURE The field of the invention is that of interactive leisure equipment and accessories for microcomputers and game consoles. More specifically, the invention relates to a game controller comprising an element movable in rotation with respect to a steering support carried by a base. It can for example be a steering wheel, a handlebar, or any other element that can be used in a simulation game, in particular to control the movements of a vehicle. Some video games in fact implement a simulated vehicle that evolves in a simulated environment. The reproduction of the simulated vehicle can be a faithful reproduction of a real vehicle, but it can also be inspired by a real vehicle, or be unrelated to reality. 2. Solution of the Prior Art It is known to use, for controlling video games, different types of interfaces, particularly in the form of steering wheel or directional handlebar, depending on the applications and needs, and generally for the purpose. to get as close as possible to reality. Thus for a video game simulating the driving of a vehicle, the use of an actuator corresponding in its form and its use to the type of vehicle driven makes the simulation more realistic, for example, the use of a steering wheel having the shape and functions of the steering wheel of a grand touring car for a grand touring car racing game. Conventionally, the steering column video game controllers comprise at least one gripping part (steering wheel or handlebar, for example) pivotally mounted about an axis relative to a base allowing the user to vary the trajectory of the steering wheel. simulated vehicle. The measurement of the rotation of the gripping part is generally carried out by a potentiometric sensor on which the moving part in rotation acts.

Direction controllers for video games with potentiometric sensors have several disadvantages, including a lack of precision in the measurement of the angle and a mechanical play of the potentiometer when the steering column is close to the neutral position (which generates a zone central death). They are also subject to dust and dirt. In addition, the potentiometric sensors have a life sometimes insufficient. Due to the wear of the potentiometers, the steering controller may shift or even stop working. However, the directional controllers have to support significant efforts (the user sometimes relies on them), and the fragility of the potentiometric sensors requires to protect them so that the efforts do not apply directly to them (which increases the cost and alters the feeling of the user). Finally, in the case of a steering controller for car games, the use of a potentiometer has the disadvantage of limiting the number of turn (s) that can do the steering wheel which is detrimental especially when the we want to simulate the execution of maneuvers (for example, make a half-turn to the simulated car). Another disadvantage of most steering column video game controllers is that the rotation of the steering controller is too soft, unrealistic, and this particularly troublesome user who needs to perform ancillary actions on the actuator (eg, operate a gear, brake or clutch, turn the driver's head of the simulated vehicle) without changing direction involuntarily. Another disadvantage of most steering column video game controllers is that they are dedicated to the simulation of a single type of vehicle, and that it is therefore necessary to provide several separate controllers, if it is desired to use several games (eg a racing simulator, a motorcycle racing simulator and a freestyle bike simulator). The gripping portion of the game controller is best suited for the same type of simulated vehicle. It is not satisfactory to control, for example, the acceleration of a motorcycle by means of a button placed on a steering wheel. And, controlling the trajectory of a Formula 1 with a motorcycle handlebars is not a realistic simulation. As for simulation enthusiasts, only an almost exact replica of the gripping part of their favorite real vehicle will suit them.

Beyond the grip part which is adapted, at best, only to a simulated vehicle type, the rest of the steering controller is not robust enough (especially for motocr simulations) to suit several types of vehicles simulated, so to interfaces of various shapes and in the case in particular of a handlebar, allow the user to rely on the game controller and use both hands (one hand on each side of the handlebars), his fingers for specific actions on the actuator (for example, to actuate the brakes or clutch on the handlebars), and his wrists (for example, to turn an acceleration dial on the handlebar). In particular, for most directional controllers, the potentiometric sensor, the fixed part and / or the link between the fixed part and the gripping part of the controller are not sufficiently robust. 3. OBJECTIVES OF THE INVENTION The object of the invention is notably to overcome these disadvantages of the prior art. More specifically, the invention aims to provide a steering column video game controller increasing the realism of the game, and therefore the accuracy and adaptation to a given game, especially for driving simulations of vehicles. Another object of the invention is to provide, according to at least one embodiment, a steering column video game controller having a long life and good resistance to the forces exerted by the user. The invention also aims, in at least one embodiment, to make the steering column video game controller easier to store and transport. Another object of the invention according to this aspect, is to provide a steering column video game controller which is simple (with few parts) and easy to assemble. Another object of the invention according to this aspect, is to provide a video game controller with a steering column whose after-sales service and recycling are facilitated. Another object of the invention is to provide such a steering column video game controller, allowing a simple and effective manner, according to at least one embodiment, to use different games, for example by implementing vehicles. different. 4. Objective of the invention These objectives, as well as others which will appear later, are achieved by means of a video game controller having an actuator movable in rotation with respect to a fixed part, so as to simulate a control of the rotation of a steering column of a simulated vehicle. In other words, it is a video game controller that simulates the steering members of a simulated vehicle with a steering column. This controller, capable of generating output signals, comprises a fixed part and an actuator which simulates the gripping part of these steering members and which cooperates with a steering column which is rotatable relative to the fixed part. It should be noted that the fixed part may be movable relative to the ground or the support on which is fixed or installed the video game controller. According to the invention, said controller implements means for detecting the rotational movement of said actuator comprising at least one Hall effect or magnetoresistive effect detection unit (including, but not limited to, the giant magnetoresistive effect), consisting of at least two elements, including a permanent magnet and a magnetic sensor, provided in such a way that, at least during the rotation of said actuator, a first of said elements is rotationally integral with said actuator and a second of said elements is integral with rotation of said fixed portion. Thus, the measurement of the rotation angle of the actuator relative to the fixed part can be performed more accurately than with potentiometric sensors. The absence of a potentiometric sensor confers a better longevity and reliability to the video game controller. The forces exerted by the user are not transmitted to a potentiometric sensor, but to a steering column of the controller, or shaft, which is sized to withstand significant efforts. The controller therefore offers a realistic feeling to the user. The measurement of the rotation angle of the actuator relative to the fixed part can thus be performed without contact between the magnet and the magnetic sensor. Since magnetic fields pass through many materials, this measurement can be done even if material is placed between the magnet and the magnetic sensor. The magnetic sensor can thus, if necessary, be protected by a casing of the actuator consisting for example of plastic.

The absence of contact limits the risk of wear and fouling, and may allow, in some embodiments, easy disassembly of the actuator, and if necessary its immediate interchangeability, if several different actuators are available. In some embodiments, it also provides a controller in at least two separable parts or modules. The 'actuator' module can be sold separately from the 'fixed part' module. This facilitates storage: the modules being separable, they can be separated and arranged together in a box of a smaller volume than when the controller consists of non-separable elements. This allows for economies of scale on the manufacture of a fixed 'part' module common to several controllers. This further facilitates transport and storage, since the modules can be transported or stored independently. This finally facilitates the after-sales service since if a module is defective, it is not necessary to return the entire controller to the seller or the manufacturer.

It is also possible in some embodiments to provide a controller in at least two separable modules (or subsets) including a module that does not include any electrical element. Providing the electrical elements all grouped in at least one module and providing in at least one other module the non-electrical elements (for example the module comprising the steering column and the base) also facilitates the after-sales service because the electrical failures can be Easily distinguished from mechanical breakdowns, the after-sales service (return, exchange, etc.) can therefore only apply to the faulty module. This also facilitates the recycling of the controller because the non-electrical module (s) can be recycled and recovered in separate recycling units. Even in the case where the actuator is only removable from the fixed part, for example by an operator of a recycling unit (for example, by unscrewing one or more screws), it remains desirable, for the reasons previously indicated. , to provide a controller consisting of at least two parts or subassemblies removable from each other, at least one subset comprising no electrical element. According to a particular embodiment of the invention, the constituent elements of the Hall effect detection assembly are aligned along the axis of rotation of said actuator.

According to a particular embodiment, the magnet of the Hall effect detection assembly is integral with the fixed part. Said magnet may be secured to the fixed part by means of a first fixed shaft relative to the fixed part of the controller, this first fixed shaft extending along the axis of rotation of the actuator and carrying this magnet.

In particular, this first shaft may be a cylindrical magnet carrier rod and the magnet may be a crown magnet mounted at the end of the rod. According to a particular embodiment of the invention, a second shaft movable in rotation with respect to the fixed part of the controller along the axis of rotation of the actuator, can guide said crown magnet with respect to said magnetic sensor. It can thus be provided that the first fixed shaft and / or the magnet are shaped so that the magnet is placed less than 9 mm from the magnetic sensor. According to a particular embodiment of the invention, the actuator can be detachable from the fixed part of the video game controller.

Said actuator may comprise a housing forming a female part, designed to fit on a corresponding male part on the fixed part. According to a particular embodiment, the video game controller provides means for locking the actuator on the fixed part.

In a particular aspect, the actuator comprises a connector on which a cable can be connected. According to a particular embodiment, the actuator belongs to the group comprising: - flywheels; - The handlebars; - The boat wheel bars. In a particular embodiment, it can be provided that the video game controller comprises or is compatible with at least two interchangeable actuators.

In particular, it is possible to provide that the said interchangeable actuators have characteristics providing a different ergonomics to the user. This difference in ergonomics can in particular come from actuators that can have different shapes, different diameters, different controls (for example, different buttons, an acceleration wheel and no control pallet, etc.), be wired or wireless, etc. According to a particular aspect of the invention, said interchangeable actuators may have different magnetic sensors or magnets, so as to obtain different rendered effects, different resolution (more or less precise displacement measurements), and / or more resistance. or less to magnetic disturbances or temperature variations, etc. According to one particular embodiment of the invention, the controller consists of at least two parts (for example, a fixed part and an 'actuator' moving part), at least one of which (preferably the fixed part) ) does not contain any element that operates by means of electric currents or electromagnetic fields.

In particular, the video game controller may consist of several modules assembled by the user, said modules themselves being constituted by elements provided pre-assembled to the user, at least one of said modules containing no element that puts electric currents or electromagnetic fields, or any element that controls or conveys electrical currents. According to a particular aspect of the invention, a portion of the actuator serving as a housing can protect the magnetic sensor. The invention also relates to the actuator movable in rotation with respect to a fixed part, so as to simulate a control of the rotation of a steering column, intended for a video game controller. Similarly, the invention also relates to the fixed part intended to form, with an actuator movable in rotation relative to this fixed part, a video game controller. 5. List of Figures Other features and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment, given as a simple illustrative and nonlimiting example, and the accompanying drawings. of which: FIG. 1 is a perspective view of the video game controller, and more specifically of an example of a steering wheel controller for video game control that can implement the invention; FIG. 2 is a perspective view of an example of the video game controller according to the invention, the detachable actuator being separated from the fixed part; FIG. 3 is a perspective view of the actuator of the video game controller; FIG. 4 is a perspective view of the fixed portion of the video game controller; Figure 5 is a perspective view of the interior of the fixed part; Figure 6 is a sectional view of the controller. 6. Detailed Description of the Invention 6.1 General Principle and Variations The actuators of the directional video game controllers are generally handlebars or flywheels whose angle of rotation relative to the base is measured by means of a potentiometer. Other types of actuators can of course be envisaged, for example to simulate the control of a boat, a spacecraft, etc. The invention proposes to use a detection assembly with magnetic sensor and permanent magnet to measure the rotation angle of the actuator relative to the fixed part of the video game controller, so as to overcome any contact between the measuring means, and to obtain a good accuracy. Later, systems based on the Hall effect are described. The same approaches can however be implemented with systems based on the magnetoresistive effect, in particular, but not exclusively, the giant magnetoresistive effect. Many implementations of the invention are possible. Some examples are given below. 6.1.1 Variant 1 In a first embodiment, the magnetic sensor may be mounted movably relative to the fixed part, more specifically it may be integral with the actuator (including a part integral with the actuator) when the actuator pivots around the axis A. For example, the magnetic sensor can be placed on a PCB fixed in the actuator. The magnet can itself be mounted integral with the fixed part when the actuator pivots about the axis A. For example, the magnet can be mounted on a part fixed to the fixed part, this part can be a tree (A shaft is not necessarily cylindrical or tubular) extending along the axis A. 6.1.2 Alternative 1a In another example, this magnetic sensor (here mobile) can also be mounted in the fixed part, more precisely it can be integral with a connecting piece pivotally mounted on the fixed part, said connecting piece being intended to cooperate with a complementary cavity of the actuator and a permanent magnet being secured to the fixed part of the controller. In this embodiment, the magnetic sensor is not in the actuator (i.e., it is not in the gripper part of the controller) but in the fixed part. When the actuator is assembled - removably or not to the connecting piece, the magnetic sensor which is attached to the connecting piece becomes integral in rotation with the actuator. The angle of rotation of the actuator is identical to the angle of rotation of the connecting piece and the magnetic sensor interacts with the permanent magnet which is in turn fixed with respect to the actuator. 6.1.3 Variant 1b In another example, the magnet may be placed in a rotating part relative to the fixed part (for example, in the actuator or in a connecting part, but rotatable relative to the to the actuator by mounting the magnet on a roller bearing) and locking the actuator to the fixed part at the same time blocks the magnet which can no longer rotate relative to the fixed part while allowing the rotation of the actuator relative to the fixed part. The magnetic sensor is itself integral in rotation with the actuator (for example, it is in the actuator or in a part integral with the actuator when the actuator pivots with respect to the fixed part). 6.1.4 Variant 2 In a second embodiment, the magnetic sensor may be fixedly mounted relative to the fixed part, more precisely it may be integral with the fixed part (including a fixed part relative to the fixed part even when the actuator pivots around the axis A) when the actuator pivots around the axis A. For example, the magnetic sensor can be fixed in the fixed part. The magnet can be mounted integral with the actuator when the actuator pivots around the axis A. For example, the magnet can be attached to the actuator or mounted on a fixed part - permanently or permanently no - to the actuator. In another example, the magnet fixed in rotation with the actuator, thus mobile with respect to the fixed part, is carried by a movable shaft (including a rod) which is integral with the actuator (including a connecting piece movable in rotation about the axis A relative to the fixed part) and which carries this magnet near the magnetic sensor. The magnetic sensor is then fixed to the fixed part. 6.2 DETAILED DESCRIPTION OF A PARTICULAR EMBODIMENT In the embodiment described hereinafter, the actuator is a steering wheel (type of grand touring car steering wheel) detachable from the fixed part. A permanent magnet is placed on the fixed part of the controller and a magnetic sensor Hall effect in the steering wheel. The use of a Hall effect detection assembly, comprising at least two elements, including a permanent magnet and a magnetic sensor, makes it possible to avoid the passage of an electrical cable between the actuator and the fixed part (in the case of an actuator not separable from the fixed part) or to avoid an electrical connector between the actuator and the connecting piece (the presence of a connector at the connection between the actuator and the fixed part has notably the disadvantage of generating a weakness because the connector is loaded at each removal, relies of the detachable actuator). In other embodiments, the magnet and the sensor can be reversed. Furthermore, although the use of a single magnet and a single sensor is advantageous, especially in a position where they are aligned with the steering column, it is conceivable to use several magnets and / or distributed sensors of adequately. In addition, in other embodiments, it may be envisaged that the Hall effect magnetic sensor is not necessarily aligned with the axis of rotation of the actuator. It is indeed, for example, possible to measure the rotation of the actuator with an axial magnet 3D sensor axially shifted.

However, depending on the type of magnetic sensor used a proper alignment can be very important. FIG. 1 is therefore a perspective view of an example of a video game controller according to the invention. This controller 1 comprises an actuator 2, in the form of a flywheel rotatable relative to a fixed portion 3 along an axis A of rotation.

In this figure, in particular, there are buttons 26 and control pallets 25 arranged on the actuator. According to the embodiment of the example, FIG. 2 illustrates in a perspective view the actuator 2, once separated from the fixed part 3.

To assemble the actuator 2 with the fixed part 3, a connecting piece 31, pivotally mounted on the fixed part 3, is intended to cooperate with a complementary cavity 21 of the actuator 2. The shapes of the cavity 21 and the connecting piece 31 are adjusted and allow (when these two parts cooperate) the transmission of the rotational movement of the actuator 2 towards the connecting piece 31.

The controller comprises a fixing system which makes it possible to reversibly fix and lock the actuator 2 on a connecting piece 31. In this embodiment, the fastening system comprises an axis 311 disposed on the connecting piece 31. This pin 311 is intended to be placed in a housing 211 located in the cavity 21. The fastening system also comprises a locking latch 22 disposed on the actuator 2. This latch is formed of an upper portion 221 which is intended to be placed in a cavity 312 (visible in Figure 4) on the connecting piece 31, and a lower portion 222 allowing the user to come and operate the latch 22 when it wishes to separate the actuator 2 of the fixed part 3.

Many other reversible fixing means can of course be implemented, without departing from the scope of the invention, including a simple interlocking force of the steering wheel on its support, in a simplified embodiment. Figure 3 is a perspective view of the actuator 2 seen from below. This figure notably reveals a connector 23 on which a cable can be connected, for the supply of electrical energy and / or the transmission of data (for example, information on the rotation of the actuator 2, and if necessary additional information, such as a shift control, when the user acts on the pallets 25, or other commands triggered by the activation of the buttons 26 (visible in Figure 1) located on the actuator 2).

In another embodiment, the data transmission can be wirelessly performed by a radio frequency transmitter (eg, 2.4 GHz) placed in the actuator 2; the power supply being then provided by one or more batteries or accumulators placed in a housing arranged in the actuator 2 or in a detachable housing and connectable to the actuator 2. FIG. 4 is a perspective view of the fixed part 3. In particular, front view, the connecting piece 31 for the interface between the actuator 2 and the fixed part 3. This connecting piece 31 is rotatable relative to the base 32, along the axis A and makes it possible to transmit to the steering column of the controller 1, which in this embodiment is the shaft 33 (visible in FIG. 5), the rotational movement exerted by the user on the actuator 2 and to a system of dynamisation and / or return of the steering wheel in neutral position (or system of return in the center), detailed below. FIG. 5 is a perspective view of the inside of the fixed part 3 showing in particular the center return system (by elastic in this embodiment). In this embodiment, the shaft 33 is designed so that it constitutes both the main axis of rotation of the controller 1 (which can therefore be described as a steering column of the controller 1), and that It is also part of the return system in the center of the actuator 2. The shaft 33 is formed in one piece but it could be formed of several pieces attached to each other (for example, a shaft and a workpiece). back on which the forces return to the center). The shaft 33 (or steering column 33) is pivotally mounted about the axis A relative to the support of the rotation mechanism 35, the latter being fixed to the fixed part 3. The base 32 and the support of the mechanism rotation 35 provide guidance in rotation of the steering column 33. The steering column 33 is integral in rotation with the connecting piece 31, and therefore the actuator 2, and thus rotates in rotation in the same way as the actuator. A fixed shaft 36 is fixed to the support of the rotation mechanism 35 (it is, for example, force-fitted in the support of the rotation mechanism) and extends along the axis A to approach the magnet at most. near the magnetic sensor. The magnet is in this embodiment a crown magnet 37. The steering column 33 has a tubular interior space in which the fixed shaft 36 and the crown magnet 37 penetrate.

The circular section of the interior space to the steering column 33 is therefore complementary to the circular section of the crown magnet 37. The steering column 33 thus guides the crown magnet 37 and refocuses this magnet with respect to the axis A. This balances the mechanics and allows an improvement in the accuracy of the measurement of the rotation (avoiding unbalance, imbalance of the magnet, bending of the shaft 36). The measurement remains accurate even in case of bending of the steering column 33. This can be useful when using a magnetic sensor that needs precise positioning. In this described embodiment, however, a rotary Hall magnetic sensor is used which does not require very accurate centering.

In a variant, the ring magnet is placed on a fixed shaft 36, and the shape of this magnet completes the rotation guide of the actuator 2 about the axis A, guiding the rotation of the steering column 33. In another variant, the fixed shaft 36 provides guidance in rotation of the steering column 33 and therefore the actuator 2 about the axis A. A crown shape of the magnet then provides no advantage and the shape of the magnet may therefore be different (for example, a straight magnet may be attached to the end of a housing provided at the end of the shaft 36). In the embodiment shown in Figures 5 and 6, the steering column 33 is rotatable relative to the fixed portion and the base 32, and the shaft 36 is fixed relative to the fixed portion 3. This approach can be reversed. The shaft 33 can be fixed relative to the fixed portion 3 and the base 32. The shaft 36 is then rotatable relative to the fixed portion 3. The shaft 33 provides rotational guidance. The connecting piece would cooperate with the end of the shaft 36 and the actuator 2 (and provides a non-definitive connection between them). The rotation of the actuator causes rotation of the shaft 36. The magnet can be fixed relative to the fixed portion 3. For example, a crown magnet could be force-fitted into the shaft 33. The shaft 36 is rotatable in the crown magnet (the crown magnet would then contribute in part to the rotation guidance). The PCB carrying the magnetic sensor 24 is then mobile with respect to the fixed part 3.

As an alternative to this inverted approach, the crown magnet could be force-fitted around the shaft 33 instead of being pressed into the shaft 33 (the shaft 33 being fixed because we are in the inverted approach ). In the second variant of this inverted approach, instead of being a cored magnet force-fitted in the shaft 33, the magnet may be a straight magnet having a length less than the diameter of a cylindrical shaft 36 which could be fitted by force without exceeding radially in a slot formed in the end of such a shaft 36 (in this case the shaft 33 is no longer necessary, the rotation guidance can then be provided directly by the base 32 of the part fixed 3, and the diameter of the shaft 36 may be larger).

The steering column 33 comprises a first pulley, or a pulley portion, 331, centered on the axis A, and two short shafts substantially parallel to the axis A and which each carry a small return pulley 332 (only one being visible in Figure 5, the other being mounted symmetrically). These pulleys 331 and 332 guide an elastic rope 34 whose ends are anchored to the support of the rotation mechanism 35 fixed to the fixed part 3, at the level of the two grooves 351. The axis of each of the pulleys 332 is integral with the column. direction 33. The pulleys 332 can preferably rotate about their axis. The ends of the elastic rope 34 are not fixed to the support of the rotation mechanism 35, they are simply anchored, held integral with the support of the rotation mechanism 35 by the prestressing of the elastic rope. Indeed, each end of the elastic rope 34 is attached to a spool (a piece in the form of a spool of thread, that is to say a kind of pulley without axis of rotation). This coil is jammed against the support of the rotation mechanism 35 (the height of the coil does not allow it to cross the groove 351) but provided that before removing the fixed part 3 (or before screwing the connecting piece 31 to the steering column 33, the base 32 to the fixed part 3 and the support of the rotation mechanism 35 to the fixed part 3), it is possible to pull radially on the coil (by opposing the elastic force) to disengage the coil from the support of the rotation mechanism 35 by stretching the elastic beyond the groove 351. This makes it possible to remove the elastic rope 34 from the return system in the center, then to remove the column of direction 33 of the support of the rotation mechanism 35. The elastic rope 34 exerts, when the actuator 2 is moved, a restoring force tending to bring the pulleys 332 and thus the steering column 33 and the actuator 2 back to a position neutral (corresponding, in the case where a car is simulated at a position of the wheels aligned with the simulated vehicle). The friction of the elastic cord 34 makes it possible to simulate a resistance in the direction. The elastic rope 34 exerts a substantially vertical resultant force on the pulley 331, which supports the steering column which improves the quality perceived by the user.

In another embodiment, the neutral steering system of the steering wheel can use two traction springs with identical characteristics acting on either side of the steering column instead of an elastic rope and pulleys. In the neutral position of the actuator, the two tension springs are slightly preloaded. When the actuator 2 is moved, each of the two springs exerts a restoring force which tends to bring the steering column and the actuator back to the neutral position. In yet another embodiment, the system of return to neutral (or return to the center) of the steering wheel is even simpler: a torsion spring whose inner diameter of the turns is slightly greater than the outer diameter of the steering column is placed around the steering column. This torsion spring cooperates with a lug arranged on the inner face of the piece 32 of the base. This spring has only few turns and, in the final position, the branches of this spring are three hundred and sixty degrees (that is to say substantially parallel). In the neutral position of the actuator, the spring is slightly prestressed and the two branches of this torsion spring press against the lug. When the actuator 2 is moved, one of the branches of the spring moves away from the lug and a restoring force tends to bring this branch against the lug and therefore the steering column and the actuator in the neutral position. In another embodiment, the rotation of the steering column 33 is energized by a feedback force system by means of, for example, a rotary electric motor acting on the steering column via a control system. gear and / or toothed belt. In this case, a gear of large diameter (for accuracy) is fixed coaxially to the steering column 33. This gear mechanically receives (via a gear train and or wheels and timing belts) the forces exerted by the electric motor that is powered according to the feedback force effects implemented by the video game. The gear, and therefore the steering column 33 and the actuator 2, pivots or stops its rotation about the axis A under the action of the electric motor, for example, it can return the actuator 2 to the neutral position, or oppose the rotation of the steering column 33, cause the rotation of the steering column 33, cause jerks in the rotation of the steering column 33, etc. FIG. 5 clearly shows the crown magnet 37. As indicated above, the shape of the crown magnet 37 makes it possible to guide it with respect to the steering column 33, that is to say to maintain it coaxially. with the axis A. It is placed at the top of the shaft 36, and can therefore be in the immediate vicinity (for example less than 9 mm) of the magnetic sensor 24 Hall effect placed in the actuator 2. The shaft 36 thus constitutes in this embodiment a magnet carrier rod. In general, the stronger the magnet, the greater the distance between the magnetic sensor and the magnet. In our embodiment, this distance is 8.05 mm. In other embodiments, the ring magnet 37 may be placed at another fixed location relative to the stationary portion 3. For example, it may be mounted on the base 32 and placed around the mouth of the base 32 , that is to say of the opening arranged in this base so that the steering column 33 can open through the base 32. In this case, the shaft 36 would be no longer necessary and the outer diameter of the column of direction 33 could be reduced. And, it is possible to extend the mouth of the base 32 in the direction of the axis A to form a tube longer than the short tubular bearing shown in Figure 6, so that the crown magnet is located at the end of this tube and inside the connecting piece and be closer to the magnetic sensor. In the embodiment illustrated in FIGS. 4 and 5, the fixed part 3 has no element operating by means of electric currents or electromagnetic fields. Indeed, this fixed part has no element operating by means of electric currents or electromagnetic fields (there is in particular neither electric motor nor electronic component). Moreover, in the embodiment illustrated by FIGS. 4 and 5, the fixed part 3 has no element controlling or routing electrical currents (there is in particular neither electrical connector, electric cable, nor electric switch). Figure 6 is a sectional view of the controller. It makes it possible to see the interior of the actuator 2 and the inside of the fixed part 3. The magnetic sensor 24 with Hall effect, secured inside the actuator 2, is located in the immediate vicinity of the cavity 21 in which the connecting piece 31 of the fixed part 3 is housed. In this way, the magnetic sensor 24 is situated very close to the ring magnet 37, which exerts a magnetic field passing through the connecting piece 31. perform a measurement of high accuracy. More specifically, when the user moves the actuator 2 in rotation, it simultaneously drives in rotation the magnetic sensor 24 relative to the magnet ring 37, which remains fixed since the latter is secured to the support of the rotation mechanism 35 and therefore of the fixed part 3. The magnetic sensor 24 therefore measures a variation of the magnetic field, which can be transformed into a precise rotation angle, and transmitted to the data processing system performing the game. This rotational movement of the actuator 2 at the same time is applied to the connecting piece 31, and to the steering column 33 including the portion or return piece carrying the two short shafts and the pulleys 332. This then acts, via the elastic rope 34, anchored to the support of the rotation mechanism 35 (thus to the fixed part 3), to generate an elastic return force allowing the return to the center of the actuator 2, in the neutral position, as soon as the user ceases to exercise a couple on it. It is possible to provide a stop integral with the movable shaft 33 and which cooperates with the fixed part (or the support of the rotation mechanism 35) to limit the rotation of the shaft 33 so as to prevent a rupture of the elastic rope 34 or prevent the elastic rope from generating a return torque that is dangerous for the user. However, it is also possible to provide, in a particular embodiment, that the actuator can make a large number of turns, or not to be limited in number of revolutions. This is notably allowed by the absence of contacts between the actuator 2 and the fixed part 3. This is of interest especially when it is desired to simulate the execution of maneuvers (for example, to make a turn around the car simulated).

Due to the absence of need for contact between the actuator 2 and the fixed part 3, the actuator can be easily changed to another type of actuator. This can be done in coherence with the video game used, and allows to adapt the ergonomics and feel of the various actuators. For example, the user can easily change a flywheel type actuator to set up a handlebar type actuator if the video game he plays simulates a motorcycle, instead of a previously mounted steering wheel. It is also possible to provide a variation of steering wheel, depending on the type of vehicle simulated. For cars, the variations of the steering wheel can be: formula 1, grand tourism, rally, off-road, kart, etc. For trains, the variations can be: Micheline, T.G.V For motorcycles, the variations of handlebars can be: unprepared motorbike, racing motorbike, motocross motorbike, rally motorbike, scooter, etc. For bikes, the variations of handlebars can be: racing bike, V.T.C., V.T.T., city bike, etc. For boats, wheel variations can be: Galions wooden steering wheel, modern sailboat steering wheel, steering wheel, etc. The actuators can therefore have different shapes, different diameters, different buttons so that their ergonomics are adapted to the type of vehicle simulated. They may also include different vibration motors, they may be wired or wireless (for data transmission), etc. It is also possible to provide, in a particular embodiment, that the number of revolutions that the actuator 2 can make with respect to the fixed part 3 differs according to the type of actuator used. Thus, it is possible to provide magnetic sensors or different magnets, depending on the actuators, so as to obtain different rendered effects, a different resolution (more or less precise displacement measurements), and / or a greater or lesser resistance to magnetic disturbances or temperature changes, etc. In the figures, the game controller 1 is shown without device ensuring the connection with the ground or the reversible or not reversible attachment with a support such as a table or a worktop or a cockpit. Such devices exist. For example, the game controller 1 may be provided with a device according to US6378826 and in this case, the fixed part 3 and the device do not include any element operating through electric currents or electromagnetic fields and no element controlling or routing electric currents. Preferably, this device is separable from the fixed part 3.

Claims (12)

REVENDICATIONS1. Video game controller having an actuator (2) movable in rotation with respect to a fixed part (3), so as to simulate a control of the rotation of a steering column of a simulated vehicle, characterized in that it implement means for detecting the rotational movement of said actuator (2) comprising at least one Hall effect or magnetoresistive effect detection assembly, consisting of at least two elements, including a permanent magnet and a magnetic sensor (24) , and in that, at least during the rotation of said actuator (2), a first of said elements is integral in rotation with said actuator (2) and a second of said elements is integral in rotation with said fixed part (3). 2. Video game controller according to claim 1, characterized in that said elements are aligned along the axis of rotation of said actuator. Video game controller according to claim 1, wherein said magnet is integral with said fixed part. 4. Video game controller according to claim 3, characterized in that said magnet is secured to said fixed portion (3) via a first shaft (36) fixed relative to said fixed portion (3) s' extending along the axis of rotation of said actuator (2) and carrying this magnet. 5. Video game controller according to claim 4, characterized in that said first shaft (36) is a cylindrical magnet-holder rod and in that said magnet is a crown magnet (37) mounted at the end of said rod. 6. Video game controller according to any one of claims 4 and 5, characterized in that a second shaft rotatable relative to said fixed portion (3) along the axis of rotation of said actuator (2), ensures guiding said magnet with respect to said magnetic sensor (24). 7. Video game controller according to any one of claims 4 to 6, characterized in that said first fixed shaft (36) and / or said magnet are shaped such that said magnet is placed within 9 mm of said magnetic sensor ( 24). 8. Video game controller according to any one of claims 1 to 7, characterized in that said actuator (2) is detachable from said fixed part (3). 9. Video game controller according to claim 8, characterized in that said actuator (2) comprises a housing forming a female part, designed to fit on a corresponding male part on said fixed part (3). 10. Video game controller according to any one of claims 8 and 9, characterized in that it comprises means for locking said actuator (2) on said fixed part (3). 11. Video game controller according to any one of claims 8 to 10, characterized in that said actuator (2) comprises a connector (23) on which can connect a cable. 12. Video game controller according to any one of claims 1 to 11, characterized in that said actuator (2) belongs to the group comprising: - flywheels; - the handlebars; - boat steering wheels. 16. Video game controller according to any one of claims 8 to 12, characterized in that it comprises or is compatible with at least two actuators (2) interchangeable. Video game controller according to claim 13, characterized in that said interchangeable actuators (2) have different shapes and / or different controls. 15. Video game controller according to any one of claims 1 to 14 characterized in that said fixed part (3) contains no element using electrical currents or electromagnetic fields. 16. Video game controller according to any one of claims 1 to 15, characterized in that it consists of several modules assembled by the user, said modules themselves being made of pre-assembled elements provided to the user. user, at least one of said modules contains no element implementing electric currents or electromagnetic fields nor any element that controls or conveys electrical currents. 17. Video game controller according to any one of claims 1 to 16 characterized in that a portion of the actuator (2) forming a housing provides protection of the magnetic sensor (24). 18. An actuator (2) movable in rotation with respect to a fixed part (3), so as to simulate a control of the rotation of a steering column, intended for a video game controller according to any one of claims 1 17. 17. Fixed part (3) intended to form, with an actuator (2) rotatable with respect to said fixed part, a video game controller according to any one of claims 1 to 17.