| 摘要 |
A sun-shade device includes an elongate housing formed with a slit, a roller journalled in the housing, a screen wound around the roller and having an upper edge which extends out of the housing via the slit and which is provided with a horizontal strip, a biasing member provided in the housing for biasing the roller to rotate in a direction for winding the screen on the roller, and left and right stretching arm units, each of which includes an upper arm member having an upper first end pivoted to the horizontal strip and a lower second end, and a lower arm member having an upper third end pivoted to the second end of the upper arm member, a lower fourth end, and a mounting portion formed between the third and fourth ends and mounted pivotally on the housing. A drive unit is connected to the fourth ends of the lower arm members for driving pivoting movement of the upper and lower arm members so as to stretch or retract the screen. The third end of each lower arm member is formed with a pin projection that engages an engaging groove formed in the second end of the adjacent upper arm member when the upper arm member is aligned with the lower arm member and is stretched from the lower arm member.
|
