Whether you're amazed by how easy it is to raise and lower a car window with the push of a button, the mechanism inside your car window is so compact and smart that the window always moves straight and smoothly. Apart from that you may also notice that you can't tell the difference between the windows even if you try to push them down or pull them up manually, let's understand the complicated mechanism that controls your car windows.
The basic structure of a car door that allows the window to slide smoothly is being illustrated here, it is now clear that some mechanism in the door has to push or pull the window, this movement can be done with a simple crank and gear adjustment like this, observe how the different parts of the mechanism move when you turn the crank the movement of the tip will push or pull the window.
As you can see the glass is supported at one point at a time therefore a small difference in friction can cause imbalance and the window may not move in a straight line, if we support the glass pedestal link at two points we can solve this problem this design suggestion can be easily understood from this weightlifting analogy, we therefore add two more links, as shown one end of this newly introduced link is rotated in the middle and the other end is connected to when sliding.
The mechanism we have just developed is known as the double scissor type mechanism that we provide on the glass making the mechanism quite strong, interestingly the scissor mechanism is starting to be used in many heavy lifting equipment folding gates and clothes on your computer keyboard, this cool mechanism is in the main car window up to nineteen hundred and nineties and some classic cars still use it the way it works it's fun to watch the top of the mechanism always slides down perfectly
However this arrangement has one major drawback it will make the window fall suddenly at the bottom, to avoid this problem let's place the spiral spring at the before point, this firmly unrolls during the up movement of the window and compresses during the downward movement, now the data does not fall suddenly and this new setting also reduces the effort required for the upward movement of the glass
Another problem is that one can operate this mechanism even by pushing or pulling the glass, meaning theft is quite easy to happen if the car window is equipped with this writing, this simple arrangement of wine gear can solve the problem effectively maybe it can turn the gear, but the gear can't rotate warm.
This means that only if we enter the movement the mechanism will work the crank is connected to the warm so that passengers can easily operate the mechanism, but when someone tries to move the glass the input movement works again and it will jam, no one can move the window glass up or down. down forcibly, besides the arrangement of william and gear also functions as a torque multiplier, simply by announcing the motor there we can change the manual window into a power window.
The main concern with this linking mechanism is that it has a lot of sliding contact, the friction loss will be high because of this this design is improved by using a rope and pulley system, you can see two plastic slides here they are connected by a rope the slider is hitchhiking on the glass
The way the power and motion generated by the motor reaches the rope is illustrated here, for smooth operation two vertical guides are used, this mechanism is smoother than the linkage mechanism seen previously as it has very little metallic contact some of the common problems of rope and pulley mechanisms are listed here , thank you for watching this article see you next time.
Posting Komentar