Ето и един бърз english превод:
The next logical step? To lowering seatposts from Trek and ShimanoIn Internet patents Trek and Shimano have surfaced that describe a possible new generation lowerable seatpost: seatposts, where you no longer have to sit on the saddle to lower it - then the saddle would not only from the handlebar extensible, but also retracted. Differences lie in the implementation: Shimano relies on electronics, Trek on mechanics.
TrekThe Trek Prop does not go quite as far as the model of Shimano. It combines two springs, an air spring and a steel spring that work against each other. The air spring is able to drive the support of all sunk to the very top. By pressing a button the air spring can then be relieved, whereupon the steel spring, the rest half submerged. From this semi-high position of the driver must now sink the rest by sitting up all to make the process start all over again - a perpetual motion Trek did not create. Here is the link to the patent by Trek.
# 1 steel spring and air suspension - left in the automatically lowered, half-height position right quite sunk
# 2 A polygon profile to ensure the twisting
ShimanoThe basic use is simple: An electric motor drives a planetary gear to a spindle drive - just as it is the case with many linear actuators. The spindle should be designed to be self-locking so that the rest would de-energized and locked in any position in both directions. The big questions that are put to: adjusting speed, weight and of course, how long does the battery. Here is the link to the patent by Shimano.
# 3 battery, motor, gear and spindle drive
# 4 handlebar remote control, battery, cables
# 5 electronics at Shimano
Opinion @ MTB-News.deThe next step in terms of retractable saddle seems to be just around the corner - somehow logical. But necessary? Frankly, the uncomfortable situations that have been created by the necessary settling, quite rare. But to be honest, before you even retractable seatposts was accustomed to many of us have even doubted its necessity. Therefore, we would try such a prop like once - as long as they are better than the previous telescopic tubes come along in terms of reliability.