The present invention relates to the field of authentication systems. More particularly, it relates to electronic signal-based authentication system. It relates to authentication system which integrates into devices in electro-mechanical systems without interfering with any of its internal functions and hence provides ease of maintenance and upgradability. The present invention relates to prevention of un-authorized usage of electro-mechanical systems. To demonstrate the signal-based authentication, the vehicle is chosen as a candidate system, since vehicles are part of daily life and has widespread usage all over the world. As an embodiment of electro-mechanical device, the present invention covering vehicle anti-theft authentication system, suggests electronic signal intervention/modification unit [5] comprising of one or more microprocessors with embedded computer instructions, input-output ports, networking units, communication units, display units resulting in a highly secure authentication mechanism to prevent vehicle from being burgled and driven away.

A column housing for a vehicle steering system is made of synthetic resin and coupled outside a column tube of a steering column for the vehicle system, the column housing including: a slit which is formed to be elongated in a predetermined direction so that the column housing is deformed inward when the column housing is pressed on and fixed to the column tube positioned inside the column housing; and a first reinforcing portion which is formed so as to protrude outward at a predetermined portion from an end position of an end portion of the slit to the periphery of the slit where the slit is not formed, and has a shape having an increased thickness relative to other portions of the column housing.

A gearbox assembly including a housing, an output shaft, a wheel gear that is fixed to the output shaft, and an input shaft. A torsion bar that connects the input shaft to the output shaft, an electric motor, a worm gear that is rotationally fixed to the rotor and engages the wheel gear to transfer torque from the motor to the output shaft, and a key lock assembly. A seal assembly is provided that isolates the locking collar from the wheel.

A vehicle theft prevention device includes a shaft, a tilt drive unit, and an expansion and contraction drive unit. A steering wheel that changes and operates a direction of a wheel in a vehicle is mounted on the shaft. The tilt drive unit adjusts an up-down angle of the shaft. The expansion and contraction drive unit adjusts a front-back position of the shaft. A lock mechanism is provided in which an engaging portion and an engaged portion that engage with each other and block rotation of the shaft when the shaft is at a preset tilt position and expansion-and-contraction position are arranged so as to be allocated to the shaft and the vehicle.

A gearbox assembly including a housing, an output shaft, a wheel gear that is fixed to the output shaft, and an input shaft. A torsion bar that connects the input shaft to the output shaft, an electric motor, a worm gear that is rotationally fixed to the rotor and engages the wheel gear to transfer torque from the motor to the output shaft, and a key lock assembly. A seal assembly is provided that isolates the locking collar from the wheel

A latching star wheel for a steering lock of a motor vehicle may have a hollow profile with a longitudinal axis and a plurality of latching recesses that can be brought into engagement with a locking bar of the steering lock that can be moved between a locking position and an unlocking position. The latching recesses may be configured as projections. An inner surface of the latching star wheel may be configured as a contact surface that is circularly perforated in a circumferential contour. The latching recesses may extend parallel to the longitudinal axis across a full length of the latching star wheel.

A lock for an antitheft device for a motor vehicle steering column is provided and includes a stator having a stator head with an opening, a rotor rotatably mounted about an axis with respect to the stator having an annular flange, a cam to rotate as one with the rotor, and an elastic element arranged between the cam and the rotor in order to exert a thrust load axially on the rotor. The opening of the stator is designed to engage with the annular flange to prevent the rotor from rotating in a predetermined rotation direction from a predetermined angular position and allows the rotor to rotate beyond the predetermined angular position by prior depression of the rotor.

A steering lock device for use with a steering shaft includes a lock bar, a camshaft, and a counterweight. The lock bar is moved between an engagement position where the lock bar is engaged with the steering shaft and a non-engagement position where the lock bar is disengaged from the steering shaft. The camshaft is rotated in response to a locking operation and an unlocking operation. The camshaft includes a lock actuation cam that moves the lock bar to the engagement position in a locking direction, and rotation of the steering shaft is prohibited when the lock bar is engaged with the steering shaft. The counterweight is arranged on the camshaft to adjust rotational balance of the camshaft.

A column housing for a vehicle steering system is made of synthetic resin and coupled outside a column tube of a steering column for the vehicle system, the column housing including: a slit which is formed to be elongated in a predetermined direction so that the column housing is deformed inward when the column housing is pressed on and fixed to the column tube positioned inside the column housing; and a first reinforcing portion which is formed so as to protrude outward at a predetermined portion from an end position of an end portion of the slit to the periphery of the slit where the slit is not formed, and has a shape having an increased thickness relative to other portions of the column housing.

A steering column for a motor vehicle may include a steering shaft that is rotatably mounted in a boxed swing arm, a latching element connected to the steering shaft in a torsion-resistant manner, a locking element that may be brought into engagement with the latching element for temporary blocking of the steering shaft, a sensor arrangement that detects a steering parameter such as an angle of rotation of the steering shaft or a torque acting on the steering shaft, and an electromechanical actuator for actuating the locking element depending on a control. The sensor arrangement may comprise first sensors for detecting the steering parameter and at least one second sensor for detecting a position of the locking element in a structural unit (13).