Technology You Can Use

DN Staff

April 4, 2005

3 Min Read
Technology You Can Use

FLEXIBLE ACRYLIC POLYMER LIGHTS THE WAY

It provides new vehicle lighting options

Normally automotive exterior lighting performs one of two functions: project light for the driver to see ahead or behind the vehicle, or provide front or rear side markers so the vehicle can be seen. The front and rear side markers are typically reflectors of light from other vehicles.

The combination of light emitting diodes (LEDs) and acrylic polymers provides new vehicle lighting options. Tyco engineers used CYRO Industries' ACRYLITE H12 acrylic polymer to design AMP Light Guides. The ACRYLITE H12 polymer provides consistent processing parameters, and the transparency, weathering stability, and light transmission characteristics that vehicle applications require. The linear light distribution system focuses the light to illuminate specific surfaces.

Using the acrylic's flexibility and ability to conduct light and LEDs as the light source, unique geometries are possible. Each polymer pipe provides 94 percent light transmission for the output of the LED. Light traveling through the pipe can be curved without affecting light transmission or illumination. The LEDs dissipate minimal heat and the conducted light gives off no heat so the entire system is safe to the touch. This allows lighting to be used almost anywhere inside the vehicle. The polymer material is weather-resistant, so exterior applications are suitable for the light guides as well.

A reflective strip integrated onto the acrylic pipe maximizes light output and directs the LED light in the desired direction. The reflective strip design maximizes illumination for the light guides. The light guides can use red, green, and other LED colors.

Among the initial vehicle applications is the illumination of vehicle running boards. The linear lighting illuminates running board steps on the Nissan Quest minivan for passengers entering or exiting the vehicle.

CONTACT:Sam Alesio, Tyco Electronics Tel: 905-470-4492; e-mail: [email protected]http://rbi.ims/ca/4389-501

PLASTIC BEARINGS HIT THE STREETS

They perform well in pivoting motion application

Big Cat Human Powered Vehicles of Orlando, FL. replaced the metal bearings initially used in its recumbant tricycle with igubal plastic bearings. The bearings absorb vibration from wheel to arms and allow the use of a much larger rod end without significantly increasing the weight. The larger rod end enabled the use of a stiffer rod that produces better wheel alignment.

The tricycle uses two igubal rod ends for direct steering. Each bearing connects one of the two front spindles (or steering knuckles) to a tie rod. The handlebars that steer the trike attach directly on the spindles. Since there are fewer moving parts than with the conventional indirect steering, the newer assembly is lighter and provides more reliable steering. The corrosion resistance of the plastic bearings avoids replacement due to wear and rust or discoloration.

CONTACT:Thomas Miller, igus Inc. Tel: (800) 521-2747 http://rbi.ims/ca/4389-502

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