| 摘要 |
PURPOSE: A road stud is provided to prevent the damage by absorbing the external shock by the elasticity of a coil spring and to secure the stable driving condition by reducing the impact which operator feels when a vehicle passes. CONSTITUTION: A road stud is composed of a main body housing(3), a slider(5), a seal ring(25), a guide cover(7), a lower cover(9), and a closed tube(10). The main body housing is laid in a road. The slider is vertically slid in the main body housing. The seal ring is installed to keep airtight condition between the main body housing and the slider. The guide cover vertically guides the slider. The lower cover is combined to the lower part of the main body housing. The closed tube is formed as a bellows-shaped rubber tube whose upper part is opened. The closed tube is mounted inside the lower cover and the guide cover.
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