| 摘要 |
PURPOSE: A reduction device of a roll screen is provided to reduce the failure rate by simplifying a structure and improve the profitability by reducing the manufacturing cost. CONSTITUTION: A reduction device of a roll screen comprises a reduction device case(3), an one-way shaft(4), a spring(5), a reduction device shaft(6), an O-ring(7), a sealing cap(8) and a connecting housing(11). The reduction device case is accepted inside a take-up tube. The one-way shaft is inserted into the front inner surface of the reduction device case. The spring is inserted to be adhered closely to the inner side of the rear flange(4a) of the one-way shaft. The reduction device shaft is connected to the one-way shaft and is inserted into the inside of rear side of the reduction device case. The O-ring is allowed in between the one-way shaft and reduction device case shaft. |
