Locks were born almost simultaneously with private ownership. As early as 3000 BC, the Yangshao Cultural Site in China preserved wooden locks mounted on wooden framed buildings. At the time of the Eastern Han Dynasty, the technology of China's iron three-spring locks had a fairly high level. The three-spring lock has been used for more than 1,000 years.
At the beginning of the 18th century, the British D. Porter invented the cam rotor lock. Its key number has grown from more than 20 of the three-spring locks to more than 80. In the mid-19th century, European manufacturers were converted into sliding rotor locks based on cam rotor locks and triple spring locks, with key numbers up to 1600.
In 1848, American L. Yell invented the use of a cylindrical pin lock, which has become the most commonly used lock in the world. The structure of modern marble locks has new developments, including two-way, three-way, four-way marble structures, as well as flat, double-sided, multi-faceted, double-row double-sided, multi-row multi-faceted marble structures and combined marble structures, thereby greatly improving the lock. The security performance makes the number of the locks change from the original 2,500 kinds of "direction" and "face" to millions.
In the 1970s, with the application of microelectronics technology, magnetic locks, voice locks, ultrasonic locks, infrared locks, electromagnetic wave locks, electronic card locks, fingerprint locks, eye locks, and remote locks appeared. These locks have a high level of security that is unmatched by mechanical construction. Modern locks can also implement program control of the system in a specific system in a set logical relationship. Modern locks can be categorized by material, purpose, keyless, safety and structure.
First, the history of the lock "Literature" æ›°: "Lock, the ancient name of the key, this is the lock." "Ci Hai" is interpreted as: "The key must be used to open the seal." In addition, the lock has a layer of meaning: "a torture device made of iron rings," which is bound by restraint.
The earliest lock is a simple organ designed by the owner to prevent others from opening. The simplest lock applied to the door is the latch. In ancient China, there were stone locks and no keys. They were tied by ropes or chains. During the Shang and Zhou Dynasties, the private ownership of production materials was further developed. The gap between the rich and the poor was further aggravated, and social contradictions were prominent. At the same time, the smelting technology was mature and immediately applied to the lock industry. Therefore, there was a copper lock that could be opened with a key. Locks, matching different locks depending on the key. With the rapid development of science and technology, mechanical locks have also made great progress. Modern mechanical locks have been in existence for more than a hundred years. Balls of different lengths have been added to the lock cylinders, and the outer wires are opened with corresponding tooth-shaped keys. Later, it developed into a combination lock, magnetic lock, electronic lock, laser lock, voice lock and so on. On the basis of the traditional key, one or more sets of passwords, different sounds, different magnetic fields, different sound waves, different beam light waves, and different images are added. Such as fingerprints, retina of the fundus, etc.) to control the opening of the lock.
Nowadays, locks have formed a very large family, and they are constantly improving and updating, constantly showing the world its magic. All in all, locks play a "shackle" function in human civilization, regulate social behavior, defend people's lives and property, and maintain social stability. ⊙
Second, the lock worry According to the definition of "Ci Hai", "the seal that can be opened with a key is called a lock", in other words, if you can open it without a key, you can't call it a lock, at least not a veritable lock.
Modern locks have been developed for more than a hundred years, and people have studied their structure and mechanism very thoroughly. Therefore, methods and tools that can be opened without a key are also emerging. In modern human civilization, because of various conflicts and conflicts in society, people's ideological and moral concepts, values, and cultural accomplishment levels are different. People in the masses are mixed, and good people can consciously regulate their own behaviors. Although there is no key, it will not be chaotic. However, those thieves who have no morality have tried to use high-tech means to unlock the door, so that the majority of residents can't prevent it.
Why does this happen? Because traditional locks have fatal weaknesses:
First, the lock core uses common copper, aluminum, zinc and other materials, which can not resist strong damage;
Second, the lock making process is backward in technology and cannot prevent the opening of technical means.
At present, many locks at home and abroad on the market do not actually have real anti-theft functions. In front of the smuggling, two wires or a few simple tools can open these locks. Some thieves even publicly threatened: "There is no lock that I can't open." In fact, it is not how smart they are, but the general principle of locks. Too simple. Faced with this cruel status quo, the new era puts forward the urgent requirement that the lock must be revolutionized. ⊙
Third, the lock and unlock - the "spear" and "shield" contest difficult to understand the difficulty of the lock and unlock the contest has never stopped, people have tried their best, racking their brains, in the decades of struggle, as " The lock of the shield has not prevailed for most of the time. The contest between the locksmith and the locksmith is one foot high, and the magic is one foot. This struggle for wisdom has lasted for decades. The "competition" began in the 1950s. At that time, the "iron general" of the door was a padlock. The locksmith only needed to send a small wire to easily get it, but at that time, not many people would come to the door.
In the 1970s, the dark locks began to be embedded in the door of thousands of households. But very quickly, the locksmith invented a small hook that reached into the keyhole and gently stirred it twice, and the lock opened. This kind of "technique" was quickly mastered by many people, and even ordinary people themselves could open their own doors with their ID cards. The lock-makers had to find ways to "fall the demon". In the 1980s and 1990s, the cross lock appeared, and the security door came into being. Everyone thought that it could "close the door", but did not expect the locksmith to "go to the next level." They have hundreds of thousands of unlocking tools. The special acetylene bottles are only palm-sized, and all kinds of hooks are available. What's even more amazing is that someone can unlock them with chewing gum.
As the eye-point "competition" is constantly upgrading, some lock factories add rare metals to the lock cylinder to deal with chewing gum and master keys. In addition, special-shaped marbles are installed to prevent the opening of the wire hooks, and the key is grooved. I used the computer to enter the password for someone to copy, but I soon heard the rumor: the locksmiths are using "magic" again.
Nowadays, some manufacturers who produce locks do not make any progress in the anti-theft performance of their own locks. For commercial purposes, only the appearance of the locks is made a big fuss, changing the shape of the keys, so that the illusion, the consumers, the anti-theft performance of these locks Not even as old as the simple padlock. From the development history of the lock, in order to prevent the opening of the master key, the manufacturing process of the lock will be particularly complicated, the manufacturing cost will increase by a factor of ten, and the performance of the anti-violence damage will be greatly reduced. The industry has been plagued by this problem.
So far, what kind of lock to choose to be truly safe is the most concerned thing for consumers. ⊙
4. What is the "universal key"?
The term "universal key" has been around for a long time. "Universal Key", as its name suggests, is omnipotent and can easily open the keys to various locks. In people's minds, a fixed look and shape has been formed. It is a key that does not have a "lock". In fact, the "master key" is a general term for many combination toggle tools made of steel wire, iron hooks and tooth molds.
"Universal Key", translated into English in English, is called "lily spoon", which means "a key made up of a hundred kinds of unlocking tools." It first appeared in Europe, was introduced to Asia, and then was introduced to China. It was recorded in the dictionary as early as the 1930s, but it has not been completely, accurately and professionally translated. In China, people only come into contact with TV, movies and novels. They feel very mysterious. The traditional Chinese human culture and traditional concept consciousness directly or indirectly affect people. They call it "universal key". In the lock industry, relative Professionally summarized as "technical opening."
The principle of unlocking the "universal key" is very simple. It uses steel wire, iron piece, tooth mold and many other plucking tools. It uses some very common mechanical mechanics to use the clever force to move the lock cylinder to achieve non-destructive. The purpose of opening all kinds of locks without obvious traces. Under certain conditions, using the above tools to unlock, even faster and more convenient than the original key. Different locks have different mechanisms and structures. The unlocking tools used are different, and there is no very fixed mode. For a long time, in the contest between the "master key" and the lock, it is disappointing that the lock as a "shield" has been at a disadvantage for most of the time.
With the rapid development of modern technology, the "master key" is constantly improving and upgrading. From the earliest primary unlocking tools (such as some small steel wire, small iron pieces, etc.), it has rapidly developed to the more advanced high-pressure expansion airbags, high-frequency vibration brushes and electric electromagnetic unlockers; more advanced is superconducting soft-ray detection. Instruments, ultrasonic high-frequency detectors and the latest laser scanners use a variety of light waves, ray scanning and detection of the internal structure of the lock and easy to open. At the same time, due to various computer electronic locks, password locks, fingerprint locks and retina electronic locks, a series of locks using high-tech electronic technology, the intelligent decoder for this type of locks, the electronic code breaker is also rapid Appeared.
"Universal Key" is also very conforming to the "trend of the times" and gradually develops into a highly intelligent and foolish way. The earliest and simplest iron hooks, steel sheets, etc. can be mastered with only a short practice; today's high-intelligence unlockers do not require any technology or skill at all, and only need to be energized to generate high-frequency vibration. It is more convenient and quick to unlock at will.
These kinds of unlocking tools are freely bought and sold in the market and on the Internet, and they have become "good helpers" for unscrupulous people. The good people know nothing about this, and their awareness is still very weak, which often becomes their target. . ⊙
5. Advanced door locks also have a "diploma"
Originally, the advanced security door lock also had a diploma. The advanced anti-theft door lock must pass the test of the Ministry of Public Security's GA/T73-1994 "Mechanical Anti-theft Lock" standard by the Ministry of Public Security. The "General Technical Conditions for Anti-theft Security Doors" formulated by the Ministry of Public Security and GA/T73-1994 "Mechanical Anti-theft Locks" clearly indicate that the security door refers to an abnormal opening that can resist certain conditions within a certain period of time, with anti-theft special locks. The door. That is to say, the mechanical anti-theft door lock is divided into two grades A and B. The anti-destructive opening time of the A-level anti-theft door lock can not be less than 15 minutes, and the anti-technical opening time can be no less than 1 minute; the B-class anti-theft door lock is The anti-destructive opening time should not be less than 30 minutes, and the technical opening time should not be less than 5 minutes.
Therefore, when purchasing a high-grade security door, you should not think that the iron door and the stainless steel door can be used for theft prevention, and you should not pursue the luxury and beauty of the one-sided face and ignore the anti-theft performance of the anti-theft door lock. The surface of the anti-theft door is made of steel. In fact, the performance of the anti-theft door lock has a big difference. Consumers should check the door lock inspection certificate of the public security department for distinction when purchasing. ⊙
Supplement - China's locks have a long history. According to the unearthed cultural relics and historical documents, the development of locks has a history of 5,000 years. The “bone fault†and “stone fault†of the Yangshao culture in the Neolithic period were the key shapes of the lock key. "觿", the ancient axe made of bones, is the prototype of the ancient key. Therefore, "觿" is one of the oldest locks in China.
Ancient locks were first called oysters, closed, key, chain, and scorpion. Early bamboo and wood structures originated from the bolts. In the Spring and Autumn Period and the Warring States Period, Lu Ban set up a ceremonial organ in the wooden lock, and the metal reed structure lock (also known as the groove lock) of the Eastern Han Dynasty. When I entered the Tang Dynasty, it was mostly gold, silver, copper, iron, and wood. In the Ming Dynasty, it became the four categories of Guangsuo, Citi Lock, Jewelry Lock and Torture Lock. There is actually a type of password lock, which is less common. After the Qing Dynasty, the Republic of China to the 1950s. The ancient lock craft is exquisite and rich in cultural connotation. Carved lettering such as: champion and first, long life rich, unicorn to send son, dragon and phoenix Chengxiang. In particular, the fish-shaped lock is used as an example. In the "Zi Tian Lu", the roadkeeper said: "The door lock must be a fisherman, and it should not be a vigil." The fish is also a good luck for many years. Ancient locks also mean wealth, so there is a saying that "the key to the horse back lock". After the birth to love forever, the family is sustainable, the body is Yongkang, it seems that all the wishes are in it.
According to the records, the earliest lock made of wood can only be used as a symbolic lock. China's metal locks first appeared in the Han Dynasty, and are reed structure locks. The Ming and Qing dynasties were the heyday of ancient locks, dominated by copper and iron. In the 1950s, low-cost low-weld hook locks, blade locks, and marble locks entered the Chinese market one after another. China’s ancient locks have since withdrawn from the historical arena. Through the ancient locks of vicissitudes of life, we can appreciate the profound history and culture of China.
The specific name of the lock, there is an unlock, two unlock, three palm lock, three hoop shrimp tail lock, four open lock, five open lock, dragon and phoenix lock, dual lock, labyrinth lock (directional lock), bottom unlock, turn lock, down Zipper, dark door lock, keyless lock, square lock, gun lock, horse reel lock, horn lock, oxtail lock, lift beam lock, text lock, digital lock and so on.
It is particularly worth mentioning that these ancient locks, although different in length and size, are similar in shape, and their mystery lies in the slotting of the keyhole, which can be described as varied and bizarre. The shape of the keyhole is “一â€, “上â€, “工工â€, “å¤,†“尚,†“å‰â€, “喜â€, “寿†and so on. These keyholes are also a reflection of the strict hierarchy of ancient society! The Li Yi people can only use the "one" character to lock the lock, and the scholar-officiary uses the "shi" and "ji" characters to lock the mouth, and celebrate the birthday, using the "shou" and "hi" characters to lock the hole, and the emperor is different. Chaos, otherwise it is considered a violation of the king's law.
According to the material, there are wooden lock, gold lock, silver lock, copper lock, iron lock, cloisonne lock, etc.; according to the form, there are round lock, square lock, pillow lock, text lock, character lock, animal lock, password lock , dark door locks, inverted zippers, barrel locks, etc.; according to the purpose, there are padlocks, door locks, box locks, cabinet locks, box locks, drawer locks, warehouse locks, etc.; from the process of mold casting.
Since the Ming Dynasty, locks have been divided into four categories: wide locks, Citi locks, jewelry locks, and torture locks.
The so-called "wide lock" means the horizontal lock. Such locks are abundant in Shaoxing, Zhejiang Province, and are also known as "Shao Lock". The folks call it "cross-lock" and "pillow lock". Since the Tang Dynasty, Guangsuo has been widely used in doors, boxes, kitchens, cabinets, etc. There are more than one hundred kinds. Wide locks are usually divided into eight sizes according to their size, with two units, such as "four two Shao", "six two Shao", "12 two Shao" and so on. "Six two Shao" is about 3.5 inches long, and "12 two Shao" is about 7 inches long.
At the beginning of the 18th century, the British D. Porter invented the cam rotor lock. Its key number has grown from more than 20 of the three-spring locks to more than 80. In the mid-19th century, European manufacturers were converted into sliding rotor locks based on cam rotor locks and triple spring locks, with key numbers up to 1600.
In 1848, American L. Yell invented the use of a cylindrical pin lock, which has become the most commonly used lock in the world. The structure of modern marble locks has new developments, including two-way, three-way, four-way marble structures, as well as flat, double-sided, multi-faceted, double-row double-sided, multi-row multi-faceted marble structures and combined marble structures, thereby greatly improving the lock. The security performance makes the number of the locks change from the original 2,500 kinds of "direction" and "face" to millions.
In the 1970s, with the application of microelectronics technology, magnetic locks, voice locks, ultrasonic locks, infrared locks, electromagnetic wave locks, electronic card locks, fingerprint locks, eye locks, and remote locks appeared. These locks have a high level of security that is unmatched by mechanical construction. Modern locks can also implement program control of the system in a specific system in a set logical relationship. Modern locks can be categorized by material, purpose, keyless, safety and structure.
First, the history of the lock "Literature" æ›°: "Lock, the ancient name of the key, this is the lock." "Ci Hai" is interpreted as: "The key must be used to open the seal." In addition, the lock has a layer of meaning: "a torture device made of iron rings," which is bound by restraint.
The earliest lock is a simple organ designed by the owner to prevent others from opening. The simplest lock applied to the door is the latch. In ancient China, there were stone locks and no keys. They were tied by ropes or chains. During the Shang and Zhou Dynasties, the private ownership of production materials was further developed. The gap between the rich and the poor was further aggravated, and social contradictions were prominent. At the same time, the smelting technology was mature and immediately applied to the lock industry. Therefore, there was a copper lock that could be opened with a key. Locks, matching different locks depending on the key. With the rapid development of science and technology, mechanical locks have also made great progress. Modern mechanical locks have been in existence for more than a hundred years. Balls of different lengths have been added to the lock cylinders, and the outer wires are opened with corresponding tooth-shaped keys. Later, it developed into a combination lock, magnetic lock, electronic lock, laser lock, voice lock and so on. On the basis of the traditional key, one or more sets of passwords, different sounds, different magnetic fields, different sound waves, different beam light waves, and different images are added. Such as fingerprints, retina of the fundus, etc.) to control the opening of the lock.
Nowadays, locks have formed a very large family, and they are constantly improving and updating, constantly showing the world its magic. All in all, locks play a "shackle" function in human civilization, regulate social behavior, defend people's lives and property, and maintain social stability. ⊙
Second, the lock worry According to the definition of "Ci Hai", "the seal that can be opened with a key is called a lock", in other words, if you can open it without a key, you can't call it a lock, at least not a veritable lock.
Modern locks have been developed for more than a hundred years, and people have studied their structure and mechanism very thoroughly. Therefore, methods and tools that can be opened without a key are also emerging. In modern human civilization, because of various conflicts and conflicts in society, people's ideological and moral concepts, values, and cultural accomplishment levels are different. People in the masses are mixed, and good people can consciously regulate their own behaviors. Although there is no key, it will not be chaotic. However, those thieves who have no morality have tried to use high-tech means to unlock the door, so that the majority of residents can't prevent it.
Why does this happen? Because traditional locks have fatal weaknesses:
First, the lock core uses common copper, aluminum, zinc and other materials, which can not resist strong damage;
Second, the lock making process is backward in technology and cannot prevent the opening of technical means.
At present, many locks at home and abroad on the market do not actually have real anti-theft functions. In front of the smuggling, two wires or a few simple tools can open these locks. Some thieves even publicly threatened: "There is no lock that I can't open." In fact, it is not how smart they are, but the general principle of locks. Too simple. Faced with this cruel status quo, the new era puts forward the urgent requirement that the lock must be revolutionized. ⊙
Third, the lock and unlock - the "spear" and "shield" contest difficult to understand the difficulty of the lock and unlock the contest has never stopped, people have tried their best, racking their brains, in the decades of struggle, as " The lock of the shield has not prevailed for most of the time. The contest between the locksmith and the locksmith is one foot high, and the magic is one foot. This struggle for wisdom has lasted for decades. The "competition" began in the 1950s. At that time, the "iron general" of the door was a padlock. The locksmith only needed to send a small wire to easily get it, but at that time, not many people would come to the door.
In the 1970s, the dark locks began to be embedded in the door of thousands of households. But very quickly, the locksmith invented a small hook that reached into the keyhole and gently stirred it twice, and the lock opened. This kind of "technique" was quickly mastered by many people, and even ordinary people themselves could open their own doors with their ID cards. The lock-makers had to find ways to "fall the demon". In the 1980s and 1990s, the cross lock appeared, and the security door came into being. Everyone thought that it could "close the door", but did not expect the locksmith to "go to the next level." They have hundreds of thousands of unlocking tools. The special acetylene bottles are only palm-sized, and all kinds of hooks are available. What's even more amazing is that someone can unlock them with chewing gum.
As the eye-point "competition" is constantly upgrading, some lock factories add rare metals to the lock cylinder to deal with chewing gum and master keys. In addition, special-shaped marbles are installed to prevent the opening of the wire hooks, and the key is grooved. I used the computer to enter the password for someone to copy, but I soon heard the rumor: the locksmiths are using "magic" again.
Nowadays, some manufacturers who produce locks do not make any progress in the anti-theft performance of their own locks. For commercial purposes, only the appearance of the locks is made a big fuss, changing the shape of the keys, so that the illusion, the consumers, the anti-theft performance of these locks Not even as old as the simple padlock. From the development history of the lock, in order to prevent the opening of the master key, the manufacturing process of the lock will be particularly complicated, the manufacturing cost will increase by a factor of ten, and the performance of the anti-violence damage will be greatly reduced. The industry has been plagued by this problem.
So far, what kind of lock to choose to be truly safe is the most concerned thing for consumers. ⊙
4. What is the "universal key"?
The term "universal key" has been around for a long time. "Universal Key", as its name suggests, is omnipotent and can easily open the keys to various locks. In people's minds, a fixed look and shape has been formed. It is a key that does not have a "lock". In fact, the "master key" is a general term for many combination toggle tools made of steel wire, iron hooks and tooth molds.
"Universal Key", translated into English in English, is called "lily spoon", which means "a key made up of a hundred kinds of unlocking tools." It first appeared in Europe, was introduced to Asia, and then was introduced to China. It was recorded in the dictionary as early as the 1930s, but it has not been completely, accurately and professionally translated. In China, people only come into contact with TV, movies and novels. They feel very mysterious. The traditional Chinese human culture and traditional concept consciousness directly or indirectly affect people. They call it "universal key". In the lock industry, relative Professionally summarized as "technical opening."
The principle of unlocking the "universal key" is very simple. It uses steel wire, iron piece, tooth mold and many other plucking tools. It uses some very common mechanical mechanics to use the clever force to move the lock cylinder to achieve non-destructive. The purpose of opening all kinds of locks without obvious traces. Under certain conditions, using the above tools to unlock, even faster and more convenient than the original key. Different locks have different mechanisms and structures. The unlocking tools used are different, and there is no very fixed mode. For a long time, in the contest between the "master key" and the lock, it is disappointing that the lock as a "shield" has been at a disadvantage for most of the time.
With the rapid development of modern technology, the "master key" is constantly improving and upgrading. From the earliest primary unlocking tools (such as some small steel wire, small iron pieces, etc.), it has rapidly developed to the more advanced high-pressure expansion airbags, high-frequency vibration brushes and electric electromagnetic unlockers; more advanced is superconducting soft-ray detection. Instruments, ultrasonic high-frequency detectors and the latest laser scanners use a variety of light waves, ray scanning and detection of the internal structure of the lock and easy to open. At the same time, due to various computer electronic locks, password locks, fingerprint locks and retina electronic locks, a series of locks using high-tech electronic technology, the intelligent decoder for this type of locks, the electronic code breaker is also rapid Appeared.
"Universal Key" is also very conforming to the "trend of the times" and gradually develops into a highly intelligent and foolish way. The earliest and simplest iron hooks, steel sheets, etc. can be mastered with only a short practice; today's high-intelligence unlockers do not require any technology or skill at all, and only need to be energized to generate high-frequency vibration. It is more convenient and quick to unlock at will.
These kinds of unlocking tools are freely bought and sold in the market and on the Internet, and they have become "good helpers" for unscrupulous people. The good people know nothing about this, and their awareness is still very weak, which often becomes their target. . ⊙
5. Advanced door locks also have a "diploma"
Originally, the advanced security door lock also had a diploma. The advanced anti-theft door lock must pass the test of the Ministry of Public Security's GA/T73-1994 "Mechanical Anti-theft Lock" standard by the Ministry of Public Security. The "General Technical Conditions for Anti-theft Security Doors" formulated by the Ministry of Public Security and GA/T73-1994 "Mechanical Anti-theft Locks" clearly indicate that the security door refers to an abnormal opening that can resist certain conditions within a certain period of time, with anti-theft special locks. The door. That is to say, the mechanical anti-theft door lock is divided into two grades A and B. The anti-destructive opening time of the A-level anti-theft door lock can not be less than 15 minutes, and the anti-technical opening time can be no less than 1 minute; the B-class anti-theft door lock is The anti-destructive opening time should not be less than 30 minutes, and the technical opening time should not be less than 5 minutes.
Therefore, when purchasing a high-grade security door, you should not think that the iron door and the stainless steel door can be used for theft prevention, and you should not pursue the luxury and beauty of the one-sided face and ignore the anti-theft performance of the anti-theft door lock. The surface of the anti-theft door is made of steel. In fact, the performance of the anti-theft door lock has a big difference. Consumers should check the door lock inspection certificate of the public security department for distinction when purchasing. ⊙
Supplement - China's locks have a long history. According to the unearthed cultural relics and historical documents, the development of locks has a history of 5,000 years. The “bone fault†and “stone fault†of the Yangshao culture in the Neolithic period were the key shapes of the lock key. "觿", the ancient axe made of bones, is the prototype of the ancient key. Therefore, "觿" is one of the oldest locks in China.
Ancient locks were first called oysters, closed, key, chain, and scorpion. Early bamboo and wood structures originated from the bolts. In the Spring and Autumn Period and the Warring States Period, Lu Ban set up a ceremonial organ in the wooden lock, and the metal reed structure lock (also known as the groove lock) of the Eastern Han Dynasty. When I entered the Tang Dynasty, it was mostly gold, silver, copper, iron, and wood. In the Ming Dynasty, it became the four categories of Guangsuo, Citi Lock, Jewelry Lock and Torture Lock. There is actually a type of password lock, which is less common. After the Qing Dynasty, the Republic of China to the 1950s. The ancient lock craft is exquisite and rich in cultural connotation. Carved lettering such as: champion and first, long life rich, unicorn to send son, dragon and phoenix Chengxiang. In particular, the fish-shaped lock is used as an example. In the "Zi Tian Lu", the roadkeeper said: "The door lock must be a fisherman, and it should not be a vigil." The fish is also a good luck for many years. Ancient locks also mean wealth, so there is a saying that "the key to the horse back lock". After the birth to love forever, the family is sustainable, the body is Yongkang, it seems that all the wishes are in it.
According to the records, the earliest lock made of wood can only be used as a symbolic lock. China's metal locks first appeared in the Han Dynasty, and are reed structure locks. The Ming and Qing dynasties were the heyday of ancient locks, dominated by copper and iron. In the 1950s, low-cost low-weld hook locks, blade locks, and marble locks entered the Chinese market one after another. China’s ancient locks have since withdrawn from the historical arena. Through the ancient locks of vicissitudes of life, we can appreciate the profound history and culture of China.
The specific name of the lock, there is an unlock, two unlock, three palm lock, three hoop shrimp tail lock, four open lock, five open lock, dragon and phoenix lock, dual lock, labyrinth lock (directional lock), bottom unlock, turn lock, down Zipper, dark door lock, keyless lock, square lock, gun lock, horse reel lock, horn lock, oxtail lock, lift beam lock, text lock, digital lock and so on.
It is particularly worth mentioning that these ancient locks, although different in length and size, are similar in shape, and their mystery lies in the slotting of the keyhole, which can be described as varied and bizarre. The shape of the keyhole is “一â€, “上â€, “工工â€, “å¤,†“尚,†“å‰â€, “喜â€, “寿†and so on. These keyholes are also a reflection of the strict hierarchy of ancient society! The Li Yi people can only use the "one" character to lock the lock, and the scholar-officiary uses the "shi" and "ji" characters to lock the mouth, and celebrate the birthday, using the "shou" and "hi" characters to lock the hole, and the emperor is different. Chaos, otherwise it is considered a violation of the king's law.
According to the material, there are wooden lock, gold lock, silver lock, copper lock, iron lock, cloisonne lock, etc.; according to the form, there are round lock, square lock, pillow lock, text lock, character lock, animal lock, password lock , dark door locks, inverted zippers, barrel locks, etc.; according to the purpose, there are padlocks, door locks, box locks, cabinet locks, box locks, drawer locks, warehouse locks, etc.; from the process of mold casting.
Since the Ming Dynasty, locks have been divided into four categories: wide locks, Citi locks, jewelry locks, and torture locks.
The so-called "wide lock" means the horizontal lock. Such locks are abundant in Shaoxing, Zhejiang Province, and are also known as "Shao Lock". The folks call it "cross-lock" and "pillow lock". Since the Tang Dynasty, Guangsuo has been widely used in doors, boxes, kitchens, cabinets, etc. There are more than one hundred kinds. Wide locks are usually divided into eight sizes according to their size, with two units, such as "four two Shao", "six two Shao", "12 two Shao" and so on. "Six two Shao" is about 3.5 inches long, and "12 two Shao" is about 7 inches long.
Base Seals are an important component used to seal machines and equipment. They are usually used to prevent liquid or gas leaks and protect machines and equipment from dust, pollutants, and other external elements. Base Seals mainly include rubber seals, oil seals, mechanical seals, O-rings, U-rings, V-rings, X-rings, and other types.
Rubber seals are a type of seal widely used in various machines and equipment. They are usually made of rubber materials and have characteristics such as wear resistance, corrosion resistance, high temperature resistance, and low temperature resistance. Rubber seals are mainly used to seal liquids or gases in machinery and equipment, such as automotive engines, water pumps, pipelines, fans, refrigeration equipment, etc.
Oil seal is a type of seal specifically used to seal lubricating oil. They are usually made of rubber and metal materials and have characteristics such as wear resistance, corrosion resistance, and high temperature resistance. Oil seals are mainly used in equipment such as automotive engines, industrial machinery, water pumps, and hydraulic systems to prevent lubricant leakage.
Mechanical seals are advanced seals used to seal machines and equipment. They are usually made of metal and ceramic materials and have characteristics such as wear resistance, corrosion resistance, high temperature resistance, and low temperature resistance. Mechanical seals are mainly used in high-speed rotating equipment, such as centrifugal pumps, compressors, fans, centrifugal separators, etc.
O-ring is a common sealing element, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. O-ring is mainly used in fields such as automobiles, machinery, and electronic equipment.
A U-shaped ring is a sealing element with a U-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. U-rings are mainly used in hydraulic systems, pneumatic systems, automotive braking systems, and other fields.
A V-ring is a sealing element with a V-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. V-rings are mainly used in fields such as automobiles, industrial machinery, and hydraulic systems.
7. X-shaped ring
An X-ring is a sealing element with an X-shaped cross-section, usually made of rubber material. They have good sealing performance and elasticity, and can be used to seal various liquids and gases. The X-ring is mainly used in hydraulic systems, pneumatic systems, automotive braking systems, and other fields.
X Ring,O Ring,Ptfe Gasket,Back Up Rings
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