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Chinese directive GB15740- 2006 obligates Chinese car manufacturers to incorporate anti-theft mechanisms in their vehicles. European Union Commission Directive 95/56/EC (1995) mandates all cars exported to European markets must be fitted with anti-theft security devices. This
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A common device to enhance car safety is the collapsible steering column. This is designed to collapse in the event of a collision to protect the driver from harm. The column can collapse after impact with a tolerance ring inserted between the inner shaft of the steering column and the external
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provide mounting for: the multi-function switch, column lock, column wiring, column shroud(s), transmission gear selector, gauges or other instruments as well as the electro motor and gear units found in EPAS and SbW
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act as a spring to hold the two parts in place in normal driving conditions. At a specific level of force, for example in the event of a collision, the
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regulation also requires that a steering lock must be able to withstand forces of 100Nm applied to the steering wheel without failing.
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which helps control movement of the column in a frontal impact, and also gives engineers freedom in mounting the steering gear itself.
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allows the inner shaft to slip inside the housing, so the column can collapse, absorbing energy from the impact.
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In the United States, steering columns are governed by several federal regulatory requirements, notably
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In virtually all modern vehicles, the lower section of the inner shaft is articulated with
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products in 1969 drastically reducing thefts of these GM models, and on
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A steering column may also perform the following secondary functions:
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energy dissipation management in the event of a frontal collision;
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offer (height and/or length) adjustment to suit driver preference
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Modern vehicles are fitted with a steering lock which is an
321:"Collapsible Steering Column Relies on Tolerance Rings"
306:"The Popular Science Anti-Car-Theft Device Competition"
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