:Padlock-Key working Principle:
Introduction: Subscribe đ
- The internal mechanisms of locks are generally made of brass or die-cast zinc.The cam,which is extend beyond for lock to secure it,is usually made of steel or stainless steel. The outer casing of a lock may be made of brass, chrome, steel, nickel or any other durable metal or alloy.
Types:
- There are many types of locks are available in market,but mostly commonly used are padlocks,dead bolts,cam lock,lever,knob lock etc.
Description:
- When you open a lock with a key, do you ever think what's going on inside?Only the correct key will open the lock.Why is that?Each key has its own unique shape. The ridges/teeth on the key have to exactly match with with the lock for it to work.
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Padlock Key |
- There are many types of lock. But the most common one is known as the Pin Tumbler Lock.The pin tumbler lock is a lock mechanism that incorporates pins varying in different lengths to precent the lock from being cracked. Pin tumbler locks are the most commonly used in cylinder locks, but can also be found in a tubular pin tumbler lock.Let me explain how this works.
- Refer figure 1,the outside part of the lock is called the case. The inside part of the lock is called the plug. This is the part that turns when the correct key is put in.The opening of the lock is called the key-way.
- Inside there are few more parts.There are several vertical shafts that go through the case and the plug.Each shaft has a spring,driver pin and a key pin.
- The springs press all the pins down so they all rest on a ledge inside the lock. The pins meet at a different level for each shaft.For the plug to turn, the pins must line up with the sheer line.
- Now if we enter the wrong key,the pins do not line up and the plug do not rotate.When we insert the correct key, everything lines up and the plug turns.So we have covered the case of one key and one lock.
- Lets take another example.With reference to figure 2 assume that there is a building and there are different keys for different doors. But there is one extra key which can open all doors of the building.That key is known as the Master key.
- With reference to figure 3 mentioned below,that master key to work,there must be an extra pin attached with the vertical shaft or driver pin inside the lock is called extra driver pin or master pin.Figure elaborate the same.Now the plug will turn if there is a key that raises the pin.
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Figure -3-Difference between master key and normal key |
- So if one uses the normal key and the Master key,in both cases,the lock will open. Some master key have more than one extra driver pin or master pin installed in shaft. So in this way pin tumbler lock works.
- OK,lot to discuss regarding this,however many more journals,video,books are available in market,you can go through it for detail study. I hope I could explain to you in better-way.
āĻĒ্āϝাāĻĄāϞāĻ āĻী āĻাāϰ্āϝāύিāϰ্āĻŦাāĻšী
āĻূāĻŽিāĻা:
- āϤাāϞাāϰ āĻ
āĻ্āϝāύ্āϤāϰীāĻŖ āĻĒ্āϰāĻ্āϰিāϝ়াāĻুāϞি āϏাāϧাāϰāĻŖāϤ āĻĒিāϤāϞ āĻŦা āĻĄাāĻ-āĻাāϏ্āĻ āĻĻāϏ্āϤা āĻĻিāϝ়ে āϤৈāϰি āĻšāϝ়। āϞāĻেāϰ āĻŦাāĻāϰেāϰ āĻāĻŦāϰāĻŖāĻি āĻĒিāϤāϞ, āĻ্āϰোāĻŽ, āĻāϏ্āĻĒাāϤ, āύিāĻেāϞ āĻŦা āĻ
āύ্āϝ āĻোāύāĻ āĻেāĻāϏāĻ āϧাāϤāĻŦ āĻŦা āĻāϞোāϰ āĻĻ্āĻŦাāϰা āϤৈāϰি āĻšāϤে āĻĒাāϰে।
āĻĒ্āϰāĻাāϰ:- āĻŦাāĻাāϰে āĻ āύেāĻ āϧāϰāĻŖেāϰ āϞāĻ āĻĒাāĻāϝ়া āϝাāϝ় āϤāĻŦে āĻŦেāĻļিāϰāĻাāĻ āĻ্āώেāϤ্āϰে āĻŦ্āϝāĻŦāĻšৃāϤ āĻšāϝ় āĻš'āϞ āĻĒ্āϝাāĻĄāϞāĻāϏ,āĻŽāϰা āĻŦāϞ্āĻāϏ, āĻ্āϝাāĻŽ āϞāĻ, āϞিāĻাāϰ, āύāĻŦ āϞāĻ āĻāϤ্āϝাāĻĻি।
- āĻāĻĒāύি āϝāĻāύ āĻোāύāĻ āĻী āĻĻিāϝ়ে āĻোāύāĻ āϞāĻ āĻোāϞেāύ, āĻāĻĒāύি āĻি āĻāĻāύāĻ āĻাāĻŦāĻেāύ āϝে āĻিāϤāϰে āĻী āĻāϞāĻে? āĻেāĻŦāϞ āϏāĻ িāĻ āĻী āϞāĻāĻি āĻুāϞāĻŦে āĻেāύ āĻāĻি? āĻĒ্āϰāϤিāĻি āĻীāĻিāϰ āύিāĻāϏ্āĻŦ āϏ্āĻŦāϤāύ্āϤ্āϰ āĻāĻাāϰ āϰāϝ়েāĻে। āĻীāϤে āĻĨাāĻা āĻļ্āϝাāĻāϏ / āĻĻাঁāϤāĻুāϞিāϰ āĻাāĻ āĻāϰাāϰ āĻāύ্āϝ āϞāĻāĻিāϰ āϏাāĻĨে āĻšুāĻŦāĻšু āĻŽিāϞ āĻāϰāϤে āĻšāĻŦে।
- āϞāĻ āĻ āύেāĻ āϧāϰāĻŖেāϰ āĻāĻে। āϤāĻŦে āϏāϰ্āĻŦাāϧিāĻ āϏাāϧাāϰāĻŖ āĻĒিāύ āĻাāĻŽ্āĻŦāϞাāϰ āϞāĻ āĻšিāϏাāĻŦে āĻĒāϰিāĻিāϤ āĻĒিāύ āĻাāĻŽ্āĻŦāϞাāϰ āϞāĻāĻি āĻāĻŽāύ āĻāĻāĻি āϞāĻ āĻŽেāĻাāύিāĻāĻŽ āϝা āϞāĻāĻি āĻ্āϰ্āϝাāĻ āĻšāĻāϝ়াāϰ āĻšাāϤ āĻĨেāĻে āĻŦাঁāĻাāϰ āĻāύ্āϝ āĻŦিāĻিāύ্āύ āĻĻৈāϰ্āĻ্āϝে āĻĒāϰিāĻŦāϰ্āϤিāϤ āĻĒিāύāĻুāϞি āĻ āύ্āϤāϰ্āĻুāĻ্āϤ āĻāϰে। āĻĒিāύ āĻিāĻŽ্āĻŦāϞাāϰ āϞāĻāĻুāϞি āϏিāϞিāύ্āĻĄাāϰ āϞāĻāĻুāϞিāϤে āϏāϰ্āĻŦাāϧিāĻ āĻŦ্āϝāĻŦāĻšৃāϤ āĻšāϝ়। āϤāĻŦে āĻāĻি āĻিāĻāĻŦুāϞাāϰ āĻĒিāύ āĻাāĻŽ্āĻŦāϞাāϰ āϞāĻāĻিāϤেāĻ āĻĒাāĻāϝ়া āϝাāϝ়। āĻীāĻাāĻŦে āĻāĻি āĻাāĻ āĻāϰে āϤা āĻāĻŽাāĻে āĻŦ্āϝাāĻ্āϝা āĻāϰāϤে āĻĻিāύ।
- āĻিāϤ্āϰ 1 āĻĻেāĻুāύ, āϞāĻেāϰ āĻŦাāĻāϰেāϰ āĻ ংāĻļāĻিāĻে āĻেāϏ āĻŦāϞা āĻšāϝ়। āϞāĻেāϰ āĻিāϤāϰেāϰ āĻ ংāĻļāĻিāĻে āĻĒ্āϞাāĻ āĻŦāϞা āĻšāϝ়। āϏāĻ িāĻ āĻ ংāĻļāĻি āĻী āϝুāĻ্āϤ āĻāϰা āĻšāϞে āĻāĻি āϏেāĻ āĻ ংāĻļāĻি āĻুāϰিāϝ়ে āĻĻেāϝ়। āϞāĻāĻি āĻোāϞা āĻ ংāĻļāĻে āĻী-āĻāϝ়ে āĻŦāϞা āĻšāϝ়।
- āĻিāϤāϰে āĻāϰāĻ āĻāϝ়েāĻāĻি āĻ ংāĻļ āϰāϝ়েāĻে,āϝেāĻাāύে āĻŦেāĻļ āĻāϝ়েāĻāĻি āĻāϞ্āϞāĻŽ্āĻŦ āĻļ্āϝাāĻĢ্āĻ āϰāϝ়েāĻে āϝা āĻেāϏ āĻāĻŦং āĻĒ্āϞাāĻেāϰ āĻŽāϧ্āϝ āĻĻিāϝ়ে āϝাāϝ়।āĻĒ্āϰāϤিāĻি āĻাāĻĻে āĻāĻāĻি āĻŦāϏāύ্āϤ, āĻĄ্āϰাāĻāĻাāϰ āĻĒিāύ āĻāĻŦং āĻāĻāĻি āĻী āĻĒিāύ āĻĨাāĻে।
- āϏ্āĻĒ্āϰিংāϏāĻুāϞি āϏāĻŽāϏ্āϤ āĻĒিāύāĻুāϞি āύীāĻে āĻিāĻĒুāύ āϝাāϤে āϤাāϰা āϏāĻāϞেāĻ āϞāĻেāϰ āĻ āĻ্āϝāύ্āϤāϰে āĻāĻāĻি āĻেāĻুāϰ āĻāĻĒāϰ āĻŦিāĻļ্āϰাāĻŽ āĻāϰে। āĻĒিāύāĻুāϞি āĻĒ্āϰāϤিāĻি āĻļ্āϝাāĻĢāĻেāϰ āĻāύ্āϝ āĻāϞাāĻĻা āϏ্āϤāϰে āĻŽিāϞিāϤ āĻšāϝ়। āĻĒ্āϞাāĻāĻি āĻুāϰিāϝ়ে āĻāύাāϰ āĻāύ্āϝ, āĻĒিāύāĻুāϞি āĻ āĻŦāĻļ্āϝāĻ āύিāĻāĻ āϰেāĻাāϰ āϏাāĻĨে āϞাāĻāύ āĻāϰāĻŦে।
- āĻāĻāύ āĻāĻŽāϰা āϝāĻĻি āĻুāϞ āĻী āĻĒ্āϰāĻŦেāĻļ āĻāϰি, āĻĒিāύāĻুāϞি āϞাāĻāύ āĻāϰে āύা āĻāĻŦং āĻĒ্āϞাāĻāĻি āĻোāϰāĻŦে āύা।āϝāĻāύ āĻāĻŽāϰা āϏāĻ িāĻ āĻীāĻি āϏāύ্āύিāĻŦেāĻļ āĻāϰি āϤāĻāύ āϏāĻŽāϏ্āϤ āĻিāĻু āϞাāĻāύ āĻšāϝ়ে āϝাāϝ় āĻāĻŦং āĻĒ্āϞাāĻāĻি āĻāϞ্āĻে āϝাāϝ়।āϏুāϤāϰাং āĻāĻŽāϰা āĻāĻāĻি āĻী āĻāĻŦং āĻāĻāĻি āϞāĻেāϰ āĻেāϏāĻি āĻāĻাāϰ āĻāϰেāĻি।
- āĻ āύ্āϝ āĻāĻāĻি āĻāĻĻাāĻšāϰāĻŖ āύিāϤে āĻĻিāύ। āĻিāϤ্āϰ 2 āĻāϰ āϰেāĻĢাāϰেāύ্āϏেāϰ āϏাāĻĨে āϧāϰে āύিāύ āϝে āĻāĻাāύে āĻāĻāĻি āĻŦিāϞ্āĻĄিং āϰāϝ়েāĻে āĻāĻŦং āĻŦিāĻিāύ্āύ āĻĻāϰāĻাāϰ āĻāύ্āϝ āĻāϞাāĻĻা āĻী āϰāϝ়েāĻে। āϤāĻŦে āĻāĻāĻি āĻ āϤিāϰিāĻ্āϤ āĻী āϰāϝ়েāĻে āϝা āĻāĻŦāύেāϰ āϏāĻŽāϏ্āϤ āĻĻāϰāĻা āĻুāϞāϤে āĻĒাāϰে। āϏেāĻ āĻাāĻŦিāĻি āĻŽাāϏ্āĻাāϰ āĻী āĻšিāϏাāĻŦে āĻĒāϰিāĻিāϤ।
- āύীāĻে āĻāϞ্āϞিāĻিāϤ āĻিāϤ্āϰ 3 āĻāϰ āĻāϞ্āϞেāĻেāϰ āϏাāĻĨে, āϏেāĻ āĻŽাāϏ্āĻাāϰ āĻীāĻি āĻাāĻ āĻāϰāϤে āĻšāĻŦে, āϞāĻেāϰ āĻ āĻ্āϝāύ্āϤāϰে āĻāϞ্āϞāĻŽ্āĻŦ āĻļাāĻĢāĻ āĻŦা āĻĄ্āϰাāĻāĻাāϰ āĻĒিāύেāϰ āϏাāĻĨে āϝুāĻ্āϤ āĻāĻāĻি āĻ āϤিāϰিāĻ্āϤ āĻĒিāύ āĻĨাāĻāϤে āĻšāĻŦে āϤাāĻে āĻ āϤিāϰিāĻ্āϤ āĻĄ্āϰাāĻāĻাāϰ āĻĒিāύ āĻŦা āĻŽাāϏ্āĻাāϰ āĻĒিāύ āĻŦāϞে। āĻিāϤ্āϰāĻি āĻāĻāĻāĻাāĻŦে āĻŦ্āϝাāĻ্āϝা āĻāϰুāύ the āĻĒিāύ āĻāϤ্āĻĨাāĻĒāύāĻাāϰী āĻোāύāĻ āĻী āĻĨাāĻāϞে āĻāĻāύāĻ āĻĒ্āϞাāĻāĻি āĻাāϞু āĻšāĻŦে।
- āϏুāϤāϰাং āϝāĻĻি āĻেāĻ āϏাāϧাāϰāĻŖ āĻী āĻāĻŦং āĻŽাāϏ্āĻাāϰ āĻী āĻŦ্āϝāĻŦāĻšাāϰ āĻāϰে āϤāĻŦে āĻāĻāϝ় āĻ্āώেāϤ্āϰেāĻ āϞāĻāĻি āĻুāϞāĻŦে। āĻিāĻু āĻŽাāϏ্āĻাāϰ āĻীāϤে āĻļ্āϝাāĻĢāĻে āĻāĻাāϧিāĻ āĻ āϤিāϰিāĻ্āϤ āĻĄ্āϰাāĻāĻাāϰ āĻĒিāύ āĻŦা āĻŽাāϏ্āĻাāϰ āĻĒিāύ āĻāύāϏ্āĻāϞ āĻĨাāĻে। āϏুāϤāϰাং āĻāĻāĻাāĻŦে āĻĒিāύ āĻাāĻŽ্āĻŦāϞাāϰ āϞāĻ āĻাāĻ āĻāϰে।
- āĻ িāĻ āĻāĻে, āĻ āϏāĻŽ্āĻĒāϰ্āĻে āĻ āύেāĻ āĻāϞোāĻāύা āĻāϰা āĻšāϞো। āϤāĻŦে āĻāϰāĻ āĻ āύেāĻ āĻাāϰ্āύাāϞ, āĻিāĻĄিāĻ, āĻŦāĻ āĻŦাāĻাāϰে āĻĒাāĻāϝ়া āϝাāϝ়, āĻāĻĒāύি āĻŦিāĻļāĻĻ āĻ āϧ্āϝāϝ়āύেāϰ āĻāύ্āϝ āĻāĻিāϰ āĻŽাāϧ্āϝāĻŽে āϝেāϤে āĻĒাāϰেāύ। āĻāĻŽি āĻāĻļা āĻāϰি āĻāĻŽি āĻāĻĒāύাāĻে āĻāϰāĻ āĻাāϞ āĻāĻĒাāϝ়ে āĻŦ্āϝাāĻ্āϝা āĻāϰāϤে āĻĒাāϰāϞাāĻŽ।
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