TRW Inc. was an American corporation involved in a variety of businesses, mainly aerospace, automotive, and credit reporting. It was a pioneer in multiple fields including electronic components, integrated circuits, computers, software and systems engineering. TRW built many spacecraft, including Pioneer 1, Pioneer 10, and several space-based observatories. It was #57 on the Fortune 500 list, and had 122,258 employees. Wikipedia.
Trw | Date: 2017-01-11
Disclosed is a locking pin (22) for mounting an airbag module (30) in a vertically movable manner on a frame (12) of a motor vehicle steering wheel (10) and at least in part within a foam structure (20) molded onto the frame (12). The locking pin (22) comprises at least one stop for the airbag module (30), said stop being integrally bonded to the locking pin (22).
Trw | Date: 2017-03-15
The invention relates to a method for folding an airbag (10), in particular an airbag (10) to be arranged under a vehicle roof (50), comprising a supply opening (11), a guide section (13) arranged connecting thereto in the longitudinal direction, and an inflation section (12) arranged connecting to the guide section (13) in the longitudinal direction, wherein the method comprises the following steps: spreading out the airbag (10) flat; laterally folding of at least sections, in particular fanfolding of at least one side part (30, 30) of the airbag (10) in the direction of the longitudinal axis (L) of the airbag (10); rolling up of the inflation section (12) at least in sections, starting from an end edge (26) of the airbag (10) which is farthest from the supply opening (11) in a first rolling direction (AR) in the direction of the supply opening (11); forming of the guide section (13) by laying at least one fold with a first fold bend (14) counter to the first rolling direction (AR) in such a way that the unfolding behaviour of the airbag (10) is influenced.
Trw | Date: 2017-03-15
The invention relates to a module cover (40) for an airbag (10) and/or an airbag module for arranging under a vehicle roof (56), in particular in the region of an upper windshield pane edge. The module cover (40) comprises a module cover panel (41) with a rear face (42) which faces towards the vehicle roof (56) when in use and a front face (43) which faces away from the vehicle roof (56) when in use. According to the invention, the module cover panel (41) comprises an elongated gap section (44), which is preferably formed over the entire width (B) of the module cover panel (41), in the form of an elongated indentation (45), which is formed in the front face (43) of the module cover panel (41).
An electric power assisted steering system comprising an input shaft (5) and an output shaft (3), an electric motor (2) connected to the output shaft (3), at least two sensors including one or more of: a position sensor (15), a torque sensor (6), and a motor (2) position, and a motor controller (8) that causes the motor (2) to apply an assistance torque as a function of the torque measured by the torque sensor (6), in which each of the sensors produces at least one output signal represented by a stream of digital samples captured at discrete times, and in which the apparatus further comprises: processing means arranged to process together the output signals from both processing units to produce at least one further signal. At least one sample value of each output signal is marked with a time stamp indicating the time at which the sample was created, and in which the processing means corrects each of the time stamp samples before or during the processing of the samples to reduce errors that may occur due to differences in the times at which the samples were created.
An electric power assisted steering apparatus comprising a combined angular position and torque sensor assembly comprising an upper column shaft that in use is operatively connected to a steering wheel of the vehicle, a lower column shaft that in use is operatively connected to the road wheels of the vehicle, a torsion bar that interconnects the upper column shaft and the lower column shaft, a first and a second torque signal generating means that each generate a first torque signal based on angular deflection of the torsion bar, an absolute position signal generating means that in use produces an absolute upper column position signal indicative of the angular position of the upper column shaft, an electric motor that is connected to the lower column shaft of the torque sensor assembly, and a motor position sensor carried by the motor that provides a motor position signal dependent on the angular position of the motor rotor. The apparatus further comprises a virtual torque signal generating means that in use is adapted to determine a third torque signal from a combination of the motor position signal and the absolute angular position signal produced by the processing means.
An electric power assisted steering system comprising a torque sensor assembly comprising an input shaft,an output shaft,a torsion bar that interconnects the input shaft and the output shaft, and a processing means which produces a torque signal indicative of the torque carried by the torsion bar, an electric motor that is connected to the output shaft,and a motor position sensor that provides a motor position signal dependent on the angular position of the motor rotor that repeats each time the motor has rotated through a known angular range. The apparatus further including processing means that generates an absolute output shaft position signal from the motor position signal by adding to the output of the motor position sensor a first term indicative of the fixed offset between the motor position sensor zero position and the zero position of the input shaft and a second term indicative of the number of turns of the motor rotor away from the zero position of the input shaft. The processing means determines the base motor position value at start up of the system by comparing the motor position signal from the position sensor with the signal from the sensor associated with the sensing means of the upper shaft to determine three candidates and during subsequent unpowered motion of the steering system rules out candidates until only one remains plausible candidate.
A combined angular position and torque sensor assembly for use in an electric power assisted steering system comprises an input part for connection to an upper column shaft, an output part for connection to a lower column shaft, a torsion bar that interconnects the input shaft and the output shaft, a first and second upper column angular position sensing means that each produce at least one output signal that is dependent on the angular position of the upper column shaft; and a processing means which produces a first torque signal indicative of the torque carried by the torsion bar. The processing means further includes means for producing a first absolute angular position signal by processing the output signals of the first and secondary sensors in a first way and a second absolute angular positon signal processing the output of the same two sensors in a different way, and further comprises a cross checker that performs a cross check between the two absolute position signals.
Trw | Date: 2017-04-05
According to the disclosed method for folding an airbag (10), the airbag (10) is first folded in a zigzag manner, and a gas generator (14) and/or an airbag-retaining metal sheet is/are placed in the airbag (10), whereupon end portions of the airbag extend around the outer circumference of the gas generator (14) and/or of the airbag-retaining metal sheet, towards each other in opposite directions up to a folding zone (26), from where the end portions are folded over outwards and are laid down in the opposite direction. Also disclosed is a corresponding airbag module.
Trw | Date: 2017-05-03
A telescopic steering column assembly comprises an upper and a lower shroud portion (1, 2) able to move relatively during telescopic adjustment, a telescopic steering shaft (3, 4) that passes through and is supported by the shroud portions (1, 2) through at least one support bearing assembly (7, 8) that acts between an upper portion (4) of the telescopic steering shaft (3, 4) and a lower portion of the shroud (2) that move relative to one another axially during telescopic adjustment. The at least one support bearing assembly (7, 8) comprises a first bearing race which is separate from the shroud portions (1, 2) and the steering shaft (3, 4), a resilient spacer (12) that applies a biasing force that is directed in a radial direction from the axis of the shaft (3, 4) and that is located between the first race and an adjacent face of one of the lower shroud portion (2) and the upper shaft portion (3); a set of bearings (11), and a cage (10) that locates the bearings (11) relative to the first bearing race (9). The bearings (11) bear onto a second bearing race that is defined by a surface of the other one of the lower shroud portion (2) and the upper shaft portion (3), the second bearing face permitting the bearings (11) to slide or roll in the direction of adjustment of the steering column assembly when it is adjusted for reach.
Trw | Date: 2017-01-04
.A rotor structure for an interior permanent magnet electric motor comprising: A laminated rotor core which comprises stack of thin plates, the stack having a first end and a second end, each plate in the stack including at least one window which is aligned with a corresponding window of an adjacent plate so that the windows together form an elongate pocket that extends along at least a part of the length of the core starting at a first end of the core, and At least one permanent magnet located in the pocket. At least one plate at the first end of the stack includes an integral retention feature which projects away from a main body of the plate to project above the window in the plate and which engages the first end of the magnet thereby to retain the magnet in the pocket.