Reivindicaciones
1. System for rendering one of the two plugs (3, 4) of an electrical connector integral with a mechanical unit (1), the said plug (4) being designed to be connected in a detachable manner, the other plug (3) being secured to an assembly (2) with which the said unit (1) is connected mechanically according to an axis which is parallel to the axis of electrical connection, characterised in that it comprises means for fitting/removal of the said plug (4) on/from the said mechanical unit (1), the said fitting/removal being carried out parallel to the axes of connection, the fitting being performed simply by clipping on, whereas the removal is carried out simply by traction. 2. System according to claim 1 for rendering integral, characterised in that the plug (4) which is connected to the said mechanical unit (1) comprises two flexible lugs (6a, 6b), each of which has a projection (16a, 16b) which acts as a cam, each of the said cams (16a, 16b) being oriented at 180° from the other, the said flexible lugs (6a, 6b) co-operating with at least one aperture (10) provided in the said mechanical unit (1), such that when the plug (4) is clipped on, the said cams (16a, 16b) are supported on a surface which is opposite the side of the mechanical unit (1) which faces the assembly (2) comprising the fixed axis (3). 3. System according to claim 2 for rendering integral, characterised in that the said lugs (6a, 6b) are identical, the cams (16a, 16b) being located at their end which is distant from the connection interface. 4. System according to claim 2 or claim 3 for rendering integral, characterised in that the said cams (16a, 16b) have a plane of symmetry which is perpendicular to the axis of the plug (4) parallel to the axes of connection. 5. System according to the preceding claim for rendering integral, characterised in that the said cams (16a, 16b) have towards the exterior a shape in the form of a V with a flat base. 6. System according to any one of the preceding claims for rendering integral, characterised in that the plug (4) which is connected to the said mechanical unit (1) comprises at least one resilient return element (7a, 7b) which acts parallel to the axes of connection, and is supported in at least one place firstly on the said plug (4) and secondly on the side of the said mechanical unit (1) which faces the assembly comprising the fixed plug (3), the said resilient element (7a, 7b) exerting on both the plug and the unit actions which are equal and opposite. 7. System according to the preceding claim for rendering integral, characterised in that the plug (4) which is connected to the said mechanical unit (1) comprises a case with a parallelepiped shape, the resilient lugs (6a, 6b) being disposed at the level of the small surfaces whereas the large surfaces have support edges (11a, 11b) for the said resilient elements (7a, 7b). 8. System according to the preceding claim for rendering integral, characterised in that the said mechanical unit (1) comprises an aperture (10) contained in a wall (8) which is substantially perpendicular to the axis of connection, and is provided with notches which can receive the flexible lugs (6a, 6b), the surface of the said notches which is oriented opposite that which faces the plug being designed to accommodate the cams (16a, 16b) of the said flexible lugs (6a, 6b). 9. System according to the preceding claim for rendering integral, characterised in that the resilient return elements (7a, 7b) are secured firstly to wings (11a, 11b) which extend perpendicularly from the large surfaces of the case, and which, in operation, are parallel to the wall (8) which contains the said aperture (10) and are also supported on the said wall (8) in the vicinity of the said aperture (10). 10. System according to the preceding claim for rendering integral, characterised in that the said resilient elements (7a, 7b) are metal plates (17, 18, 19, 20). 11. System according to claim 9 for rendering integral, characterised in that the said resilient elements are coil springs (21). 12. System according to claim 9 for rendering integral, characterised in that the said resilient elements are pieces of synthetic material (22, 23) of the foam type having resilient properties which allow them to exert a return action. 13. System according to the preceding claim for rendering integral, characterised in that the said resilient elements are foam buffers, the surface of which that is opposite the said wings is self-adhesive. 14. System according to any one of the preceding claims for rendering integral, characterised in that the said plug (4) belongs to a locking connector, one of the plugs (3) of which comprises a locking unit (13) which makes it possible to form the electrical connection when the mechanical connection of the connector begins to be carried out, and, by inverse displacement, to undo the said electrical connection to restore it to its position for beginning of connection. 15. System according to the preceding claim for rendering integral, characterised in that the said connector (3, 4) comprises a locking unit taking the form of a transverse clamp (13) which slides laterally in one of the plugs (3) of the said electrical connector. 16. System according to the preceding claim for rendering integral, characterised in that it is applied to the female plug (4) which does not comprise the transverse locking clamp (13). 17. System according to any one of the preceding claims for rendering integral, characterised in that the said mechanical unit is a steering wheel (1) of a motor vehicle, the said assembly which comprises the fixed plug (3) of the electrical connector being the top of a vehicle steering column (2), these two elements being designed to be rendered integral. 18. Motor vehicle steering wheel equipped with an electrical connector plug (4) provided with a system according to any one of the preceding claims for rendering integral. 19. Assembly comprising a steering wheel (1) equipped with a system according to any one of claims 14 to 16 for rendering integral, and a top of a steering column (2) onto which there is secured a connector plug (3) which is designed to co-operate with the plug (4) of the said steering wheel (1), characterised in that , when the steering wheel (1) is brought mechanically alongside the said top of the column (2), the beginning of the mechanical coupling of the plugs (3,4) of the electrical connector is also carried out. 20. Method according to claim 18 for bringing a motor vehicle steering wheel (1) alongside a top of a steering column (2) provided with a fixed connector plug (3) which is designed to co-operate with the plug (4) of the steering wheel, characterised in that it comprises the following steps: - bringing the steering wheel (1) mechanically alongside the said top of the column (2), and simultaneously beginning the mechanical guiding of the electrical connection; - mechanical release of the connector (4) provided on the steering wheel (1) by completion of the electrical connection. 21. Method according to the preceding claim for bringing a motor vehicle steering wheel (1) alongside, characterised in that the said mechanical release is performed by the locking unit (13) of an electrical locking connector. 22. Method according to claim 18 for release of a motor vehicle steering wheel (1) from the top of a steering column (2) provided with a fixed connector plug (3) which is designed to co-operate with the plug (4) of the steering wheel, characterised in that it comprises the following steps: - disconnection of the electrical connection, resulting in making one of the plugs (4) mechanically integral with the steering wheel (1); - mechanical release of the steering wheel (1) from the top of the steering column (2). 23. Method according to the preceding claim for release of a steering wheel, characterised in that the electrical connection is disconnected by the locking unit (13) of an electrical locking connector.
