Car seat next to a handle, think now do not know the handle of the working principle. The details are: the handle is lifted to the end, and then can not be put down, can be for the passengers as a handle; when the passengers and then put the handle in the head, and then you can put down, I would like to know what is inside the body, Can you put down? More
A two-tooth ratchet, the order of rotation were achieved stuck and put down
A two-tooth ratchet, the order of rotation, respectively, to achieve stuck and put down.
I do not know the specific, but it is estimated that with the automatic ballpoint pen or plug the same button switch the same principle. You can go and remove a row of plug to see.
