| 摘要 |
The present invention relates to a window roller comprising a fixed frame fixed to the lower side of a window; an elevation adjusting frame installed inside the fixed frame, and having an adjustable height; a wheel frame installed to be fixed inside the elevation adjusting frame; and driving wheels supported by wheel bearings, installed inside the wheel frame, and able to rotate, wherein the wheel frame has wheel waterproof parts adhering to interfaces between the driving wheels and the wheel bearings and sealing the wheel bearing from the outside. According to the present invention, the wheel bearings are externally blocked and sealed to efficiently prevent rainwater from flowing into the wheel bearings, so that operational failures are prevented from being generated in the wheel bearings by rust while the wheel bearings are maintained to be waterproof, hence the window roller can be stably used for a long time without repair and replacement. |
