Abstract:
A hood elevation system for a vehicle includes an actuator configured to selectively move at least a portion of a vehicle hood between an elevated and a retracted position. The hood elevation system also includes a motor and a spring. The spring biases the hood toward its elevated position, and the motor is configured to retract the hood, thereby compressing the spring.
Abstract:
A headrest positioning system for automatically adjusting the position of a headrest of a vehicle seat. The headrest can be a power headrest that is part of a power seat system, where the position of the headrest can be preset by a seat occupant with the other positions of the seat in a memory function. The system includes a seat occupant sensing system that senses the position of the seat occupant's head, eyes or other facial features to determine a desired position of the headrest. The system compares the actual position of the headrest to the desired position, and automatically adjusts the position of the headrest to the desired position. In one embodiment, an imaging system determines the position of the seat occupant's head. In another embodiment, the system determines the position of seat occupant's eyes based on the position of the driver side mirror.
Abstract:
A seat assembly for a vehicle includes a lower seat portion and a seatback portion. The seatback portion is selectively movable to vary the reclination angle of the seatback portion. The seat assembly is configured so that a first part of the lower seat portion rises relative to a second part of the lower seat portion so that the lower seat portion acts as an occupant restraint when a predetermined condition exists. Exemplary predetermined conditions include the reclination angle changing, the reclination angle exceeding a predetermined amount, and conditions indicative of an elevated risk of vehicle impact.
Abstract:
A method for coordinating the restraint forces provided by a seat belt load limiter and a vehicle airbag is provided. The method includes determining a desired total restraint force profile, determining the airbag force profile, and determining a desired seat belt force profile from the desired total restraint force profile and the airbag profile. The method preferably includes determining a load-limiting force profile sufficient to substantially achieve the desired seat belt force profile, and determining the profile of a load limiter system variable sufficient to substantially achieve the load-limiting force profile. A load limiter is also provided that is characterized by a variable load-limiting force. The load-limiter includes a tube characterized by a tube wall thickness, and a deformation apparatus slidably engaged in the tube for linear translation therein. The deformation apparatus is configured to plastically deform the tube during linear translation to generate a load-limiting force. The tube wall thickness varies over the length of the tube such that the load-limiting force varies during linear translation of the piston.
Abstract:
An axial positioner capable of yielding to absorb energy under compression or tension loads. The positioner includes an outer tube having first and second ends, a threaded actuator rod extending between the first and second ends and a drive to rotate the actuator rod. A threaded member threadably engaging the actuator rod moves axially between the ends of the outer tube as the actuator rod rotates. The member includes a radial flange extending toward the outer tube. A radially extending load ring spaced axially from the flange is connected to a plurality of axially extending force transmitting elements. A spring positioned between the flange and a load ring expands radially outward against the outer tube when compressed between the flange and the load ring. Loading of the spring against the tube absorbs energy of axial motion of the flange under excessive loads transmitted by the force transmitting elements to the load ring.
Abstract:
A hood elevation system for a vehicle includes an actuator configured to selectively move at least a portion of a vehicle hood between an elevated and a retracted position. The hood elevation system also includes a self-locking mechanism configured to allow movement of the hood between the elevated and retracted positions initiated by the actuator, but to resist retraction of the hood as a result of certain loads applied to the hood. The self-locking mechanism thus enables repeated elevation and retraction of the hood. In a preferred embodiment, the self-locking mechanism is configured to deform, thereby absorbing energy from an impact to the hood.
Abstract:
A thruster system is provided for a vehicle that can be used to reduce the roll propensity of a motor vehicle. The system utilizes a control system and multiple sets of thrusters which are strategically placed upon the vehicle. The control system is provided for detecting a potential roll condition and activates selected ones of the thrusters to produce a necessary thrust force for counteracting roll forces. The thrusters are connected to an on-board pressurized gas source that generates the anti-roll thrust force.
Abstract:
An automobile exterior rearview mirror system in which adjustments by the vehicle operator to the driver side mirror are used to make automatic adjustments to the passenger side mirror without requiring the operator to make separate, independent adjustment of that mirror. The automatic adjustment is determined using the measured horizontal angle of the driver side mirror along with distance data related to the position of an inboard edge of each of the exterior mirrors.
Abstract:
A sensing algorithm for a dual stage airbag system is disclosed which applies a biased severity measure BSM to determine no-deployment, single-stage deployment or two-stage deployment of an airbag. A biased severity measure uses a bias factor to make a chosen severity measure in favor of the robustness or sensitivity of the algorithm, as desired. The sensing algorithm also employs a predicted occupant movement POM which must reach a preset occupant movement threshold before the biased severity measure is compared with first and second preset severity thresholds for determining actuation of the first and second stages of airbag actuation.
Abstract:
A self-locking telescoping device including an outer tube, an inner tube telescoped into the outer tube having a cone-shaped ramp at an inboard end, and a plurality of metal spheres between the ramp and the outer tube. The metal spheres wedge between the ramp and the outer tube when the inner tube is thrust into the outer tube in a collapse direction thereby locking the tubes together. When the thrust is attributable to a severe impact, the spheres plastically deform the outer tube by plowing tracks therein thereby to absorb energy. The self-locking telescoping device further includes an actuator rod, a driver which translates the actuator in the collapse direction and in an expansion direction, a first clutch which translates the inner tube with the actuator rod in the expansion direction, a second clutch which translates the inner tube with the actuator rod in the collapse direction, and a tubular retainer on the actuator rod having a plurality of closed-ended slots around the metal spheres. The closed ends of the slots prevent the spheres from becoming wedged between the ramp and the outer tube when the second clutch translates the inner tube with the actuator rod in the collapse direction.