Understand the operating mechanism of familiar objects in just one photo

What is happening inside sewing machines, locks, or even . zip-up?

Operation mechanism of everyday objects

When you see sewing machines, locks, or simply . dragging the zip, have you ever been curious about their operating mechanism?

For example, why is it necessary to use the right key to unlock the lock or what mechanism makes the sewing machine "just thread" in such a wonderful way?

The photos below will answer you those questions.

1. Mechanism in sewing machines

The solution to many questions of childhood.

Below the stitched needle is a shuttle hook named "shuttle hook." The thread that originates from the roll just inside the shuttle will follow the needle down to the fabric. Then the shuttle will hold the thread, loop backwards and then hook it to the source to tie the knot.

2. Key - lock mechanism

Is this picture enough to answer your questions?

A photo is very easy to understand, isn't it?

The locks in the picture are the most commonly used locks - lock locks. This type of lock consists of a cylindrical lock shaft inside which is small detachable blocks with different short lengths.

Normally, locks will be placed between the lock shaft and the iron shell, making it impossible to rotate. However, when you get the key with the proper teeth, the static locks will exit the shaft, making it easy to rotate and unlock.

3. Mechanism . zipper pants

Zippers - also known as French (fermeture) are a common tool for temporarily installing two fabric edges together.

Phét - apricot - tuya has 2 parts: slide and two strips containing hundreds of teeth. The slider section can move along the teeth, with the Y-shaped groove inside to match or separate the two rows of teeth according to the direction of movement.

In English, zippers are called zipper - due to the characteristic sound emitted when pulling (zip).

4. Clock operation mechanism

Inside each watch has a system like the image below.

Geneva disk system.

This system called the Geneva disk , was born in the seventeenth century. The system consists of a circular motion plate with a small pin (also known as a pin) above - so that when moving the battery will be matched with the groove of the gear, which helps the wheel move in each step.

The name "Geneva" comes from the first application of the system: clock production in Geneva (Switzerland). In addition, this system also appeared in a number of other areas such as film projectors.

5. How does the car engine operate?

What makes these cars work smoothly is the engine, and one of the most popular engines currently is the 4-cylinder. So how does this engine work?

The green part is fuel and air, the red part is the detonation process, and the black is the exhaust.

This type of engine includes 4 in-line cylinders, inside each cylinder containing a piston up and down. This process incorporates the rotary movement of the crankshaft to drive, enabling the vehicle to operate.