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News

High performance bumps stops contribute to pedestrian safety

Trelleborg AB Group Head Office : 05 April, 2011  (Technical Article)
Driver influence is a key cause of pedestrian-related injuries, but car design has a huge impact on the severity of those injuries. Reducing pedestrian injuries is a priority for the automotive industry, and specialist automotive design and manufacturing companies, such as Trelleborg Automotive are constantly developing new products to improve both pedestrian and passenger safety.
There were 34,500 fatalities on roads in the European Union last year, according to the EU road accidents database, and pedestrian fatalities accounted for around 17 percent of all traffic fatalities.

Head injuries are a key cause of pedestrian fatalities. However, the severity of injuries may be significantly reduced with innovative technology from Trelleborg. The collapsible pedestrian bump stop, developed by Trelleborg Automotive, is a pioneering new safety solution specifically designed to reduce head injuries and save lives in the event of an accident.

Delivering robust, high-performance bump stop solutions for all of a car’s opening panels, Trelleborg’s range includes the roof, trunk and passenger doors as well as the hood or bonnet. The entire range, including the new pedestrian bump stop, is available in a number of materials, including plastic, rubber and thermoplastic elastomer, depending on specific requirements for compression, durability, temperature and age resistance. The various specifications ensure reliable performance of the bump stop in a range of applications and environments. As well as being watertight, the entire bump stop range enables easy integration of electrical sensors while also providing active damping.

“Manufacturers are constantly striving to improve their NCAP ratings, and the pedestrian bump stop is a solution that can realistically help to achieve this by genuinely helping to reduce pedestrian injury,” says Eric Martinuzzi, Product Development Manager, Trelleborg Automotive. “Our latest bump stop harnesses more than 30 years of experience at the forefront of complete car bumper systems,” he says. “The unique solution is based on an advanced design that will undoubtedly reduce the number of serious injuries sustained by pedestrians. Perhaps most significant is the potential to reduce the likelihood of serious head injuries.”

The bump stop, which is fitted beneath the automobile hood or bonnet, is activated when a pedestrian comes into contact with the front of the car. The latest in Trelleborg’s range of innovative bump stop systems, the pedestrian bump stop spring releases the hood, which softens the impact if the pedestrian makes contact with the hood and the hard underlying structure of the engine, significantly reducing the likelihood of serious injury.

Engineered by the industry-leading team at Trelleborg, the bump stop has been designed to enable easy integration within the opening and closing mechanism of any manufacturer’s car hood.

Incorporating an adjustable EPDM (ethylene propylene diene monomer) rubber bumper, the new hood bump stop features a collapsible metal component fixed to a plastic support. Upon impact, the metal structure instantly flattens, ensuring that a far greater degree of deployed pedestrian energy is absorbed, and the likelihood of serious injury resulting from the impact is considerably reduced.
The collapsed metal part is subsequently replaced to enable the bump stop to function in the event of a future collision.

EURO NCAP
Euro NCAP provides motoring consumers with a realistic and independent assessment of the safety performance of some of the most popular cars sold in Europe.
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