CN108756480B

CN108756480B - Spring lock and key thereof

Info

Publication number: CN108756480B
Application number: CN201810536213.4A
Authority: CN
Inventors: 王延杰; 徐望舒; 赵春; 朱灯林; 骆敏舟
Original assignee: Changzhou Campus of Hohai University
Current assignee: Changzhou Campus of Hohai University
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2020-03-10
Anticipated expiration: 2038-05-30
Also published as: CN108756480A

Abstract

The invention discloses a spring lock and a key thereof, wherein the spring lock comprises a lock body, a rotatable lock core, an inner spring, an outer spring and a spring, wherein the lock core is positioned in the middle of the lock body and used for propping against the outer spring; the inner marble, the outer marble and the spring are all arranged in the lock body, one side of the inner marble is a key hole, the other side of the inner marble is connected with the outer marble, and the other side of the outer marble is connected with the spring. A key for a pin tumbler lock comprises a plurality of rugged serrations contactable with an inner pin, a plurality of said serrations forming an undulating profile curve. The invention can realize convenient management of multi-space safety, improve management efficiency and enable the unlocking mode to be realized, one key can unlock a plurality of locks, and the same lock can be unlocked by different keys, namely, the keys and the lock cylinders are not designed to be completely matched in a one-to-one correspondence manner.

Description

Spring lock and key thereof

Technical Field

The invention relates to a spring lock and a key thereof, belonging to the technical field of spring locks.

Background

In daily economy and production life, based on safety considerations, people always set switches at entrances and exits of some important spaces, and install pin tumbler locks at the switches, such as at the entrances and exits of homes, supermarkets, factories, offices and the like. The use aspect of the pin tumbler lock can be quite extensive, and especially the pin tumbler lock is the pin tumbler lock with the most representative characteristics, can be suitable for various occasions, and a pin tumbler lock and a key can be developed in various forms, so that the pin tumbler lock has great potential, universality and universality.

On one hand, the development of the existing spring lock has great change, and various structures such as bidirectional, three-way, four-way springs, female springs and the like, as well as plane, double-face, multi-face, double-row, multi-row and multi-face spring structures and combined spring structures appear, so that the confidentiality is improved, and the change reaches millions.

However, since most conventional tumbler locks in use require a one-to-one correspondence with the key. Therefore, multiple sets of house owners or factory managers own a large number of keys for opening different rooms or offices, and the keys are similar in shape and easy to be confused, which is very inconvenient for the managers owning multiple rooms.

On the other hand, the current cylinder lock industry has a great development, and new products developed by using new technologies are in endless, and magnetic-control locks, sound-control locks, ultrasonic-wave locks, infrared-ray locks, electromagnetic-wave locks, electronic card locks, fingerprint locks, eyeball locks and the like appear.

However, these new cylinder locks have significant disadvantages, such as high purchase and maintenance costs, susceptibility to external conditions, complexity in operation and control, limited power consumption, etc. As the most frequently used mechanical lock, a cylinder lock is widely used because of its low price. Because the design principle of the current spring lock is limited to one key for unlocking one lock, the safety arrangement of multiple spaces inevitably causes waste and inconvenience in management.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a spring lock and a key thereof, which can realize convenient management of multi-space safety, improve the management efficiency and ensure that the unlocking mode is realized, one key can unlock a plurality of locks, and the same lock can be unlocked by different keys, namely the design of the key and the lock core is not in one-to-one correspondence and is completely matched.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention relates to a spring lock, which comprises a lock body, a rotatable lock core, an inner spring, an outer spring and a spring, wherein the lock core is positioned in the middle of the lock body and can rotate, and the spring is used for propping against the outer spring; the inner marble, the outer marble and the spring are all arranged in the lock body, one side of the inner marble is a key hole, the other side of the inner marble is connected with the outer marble, and the other side of the outer marble is connected with the spring; when a key is inserted into the key hole, the key drives the inner pin tumbler to move towards the outer pin tumbler direction, the outer pin tumbler is pushed to move towards the spring direction until one side of the inner pin tumbler is completely overlapped with the boundary of the lock core, the lock core can rotate at the moment, and the pin tumbler lock is in an open state; when one side of the inner marble can not be completely overlapped with the boundary of the lock core, the lock core can not rotate at the moment, and the spring lock is in a locking state.

The lock cylinder is a cylindrical lock cylinder made of copper.

The inner marble and the outer marble are arranged in a round hole of the lock core and are cylindrical with different lengths; the pin tumbler lock is provided with 3 to 5 groups of inner pin tumblers and outer pin tumblers.

The springs, the inner marbles and the outer marbles are distributed in a cross shape, a C shape, a straight shape or an S shape on the cylindrical surface where the lock core is positioned.

A key for a pin tumbler lock comprises a plurality of rugged serrations contactable with an inner pin, a plurality of said serrations forming an undulating profile curve.

The contour curve is divided into an effective area and an ineffective area; the effective area refers to that one or more sections of contour curves of the key can be correctly matched with the inner pin tumbler of the lock core, so that one side of the inner pin tumbler is completely overlapped with the boundary of the lock core, and the pin tumbler lock is in an open state; the invalid region means that the inner marble, the outer marble and the spring are not arranged in the lock core corresponding to one section or a plurality of sections of profile curves of the key or can not be matched with the inner marble, the outer marble and the spring, so that the spring lock is in a locked state.

For a key with a specific profile curve, the active area and the inactive area are mutually convertible on different pin locks; assuming that the key is provided with three areas, namely a first area, a second area and a third area, when the lock cylinder of the first spring lock only has a contour curve matched with the first area on the key, all inner springs are overlapped with the boundaries of the lock cylinder, the key can open the first spring lock, and the first area is an effective area; when the lock core of the second spring lock only has a contour curve matched with a second area on the key, so that all the inner springs are overlapped with the boundary of the lock core, the key can open the second spring lock, and the second area is an effective area; when the lock core of the third spring lock only has a contour curve matched with a third area on the key, so that all inner springs are overlapped with the boundary of the lock core, the key can open the third spring lock, and the third area is an effective area; by analogy, when the lock core of the fourth pin tumbler lock only has the contour curve matched with the first area and the second area on the key, all the inner pins are overlapped with the boundary of the lock core, the key can open the fourth pin tumbler lock, and the first area and the second area are effective areas; when the lock core of the fifth spring lock only has contour curves matched with the first area and the third area on the key, so that all the inner springs are overlapped with the boundary of the lock core, the key can open the fifth spring lock, and the first area and the third area are effective areas; when the lock core of the sixth pin tumbler lock only has profile curves matched with the second area and the third area on the key, so that all the inner pins are overlapped with the boundary of the lock core, the key can open the fifth pin tumbler lock, and the second area and the third area are both effective areas; when the lock core of the seventh spring lock has contour curves matched with the first area, the second area and the third area on the key, all the inner springs are overlapped with the boundary of the lock core, the key can open the sixth spring lock, and the first area, the second area and the third area are effective areas; different pin tumbler locks can be unlocked according to the authority aiming at keys with different effective areas, a first pin tumbler lock, a second pin tumbler lock and a fourth pin tumbler lock can be unlocked by keys with a first area and a second area, and only the first pin tumbler lock can be unlocked by the key with the first area.

Setting effective areas according to the contour curve shape of the key and carrying out free combination to obtain the matching relation between countless keys and the spring locks, and further designing the corresponding spring locks and keys.

The contour curves are zigzag, rectangular, circular, spline curves and combination curves thereof.

The invention has the following beneficial effects:

1. an office building has a public door (which can be used as an internal archive) and sixty offices, with three managers, and each manager is at least equipped with twenty one keys (one public door key for each person) on average to open all doors, while one office has ten office workers, each person has one public door key, one office key and one own desk key, and the total number of keys is 1863. If the price of each key is a yuan, and the monthly payroll of the administrator is 600 yuan, the total cost is 3663 yuan. If the present company adopts the design idea, the number of keys can be reduced to 622, and meanwhile, because the number of keys carried by opening the door each time is reduced, the management is convenient and quick, two managers can be cut, the monthly wage is 700 yuan, and the price of each key is 1.3 yuan, the total cost is 2208.6 yuan, so that 1454.4 yuan can be saved. If the amount of alloy for the key is taken into consideration, 12.41 kg of alloy can be saved by setting 10 g of alloy for each key. The invention has the advantages that: the time, energy and materials for matching the key are saved, the cost of managers is reduced, the money expenditure is reduced for companies, and the construction of a good society is facilitated for society.

2. If a building has a public door and 30 offices, each person is equipped with its own drawer, if there is only one manager, as is the case, the manager needs 31 keys (without private drawer keys) and each employee needs 3 keys. According to the idea of model one of the invention, everyone needs only one key to open the public door, his office and his drawer. And the manager can open the doors of all the public spaces except the drawer only by one key. Therefore, the invention has the advantages that: for a company with huge personnel and numerous offices, the invention reduces the number of keys allocated to each person, thereby facilitating the use of everyone, and on the other hand, the management of the keys is greatly improved, and the number of the keys of the manager is reduced to one, so that if an accident occurs, doors in various public areas can be opened more quickly, and meanwhile, private drawers cannot be opened, thereby protecting the privacy of each worker.

3. For the above cases, the effective area of the key is divided into three parts, if more requirements are needed or more complicated conditions exist, the effective areas of the key and the lock cylinder can be increased, and therefore more methods for combining and arranging are provided to adapt to complicated and variable environments. The invention has the advantages that the proper lock core and key can be manufactured only by the corresponding condition of the effective area and how to change the requirements, the requirements and the limits can be met, and the invention has strong flexibility and variability.

4. For the above mentioned situation, it is only the most common flat key and other spring locks, because of the development of technology, the current spring lock has a plurality of structures such as bidirectional, three-way, four-way springs, mother springs, etc., and a plane, double-sided, multi-sided, double-row, multi-sided spring structure and a combined spring structure. Therefore, the simplest key, lock cylinder and unlocking method are known, the lock cylinders and keys of various types and forms of pin tumbler locks can be extended, certain effects on theft prevention are achieved, and the defect that a single effective interval is too simple is overcome.

5. The management range of the administrator key is increased, namely, the original lock which can only open the public door and the office is changed into the lock which can open all the locks, and the concept of the 'master key' is provided. Can open all doors not only improve efficiency, also bring people convenient and fast's user experience. For example, for one family, the door in the house comprises a bedroom, a kitchen and a toilet, if the family is a simple two-room one-hall, four doors are generally arranged, and four keys are needed to be opened, but for the general family, the four keys are very inconvenient to carry, so if a master key is arranged, all the doors can be opened only by one key, and on the other hand, if someone is arranged, the door is closed carelessly in one room, so that the door can be opened only by taking one master key, the corresponding key is not needed to be found in time, the trouble is reduced, and the time efficiency is also improved.

Drawings

FIG. 1 is an internal block diagram of a lock;

FIG. 2 is a schematic view of a key active area configuration;

FIG. 3(a) is an internal display view of an administrator key;

fig. 3(b) is an internal display view of the key 2;

fig. 3(c) is an internal display view of the key 3;

FIG. 3(d) is an inside view of a public door lock;

FIG. 3(e) is an inside display view of the lock of office 2 lock;

FIG. 3(f) is an inside display view of the office 3 lock;

FIG. 3(g) is an inside display view of the drawer 2 lock;

FIG. 3(h) is an inside display view of the drawer 3 lock;

FIG. 4(a) is a schematic view of an administrator key mated with a public door;

FIG. 4(b) is a schematic diagram of the cooperation of the administrator key with office 2;

FIG. 4(c) is a schematic diagram of the cooperation of the administrator key with the office 3;

fig. 5(a) is a schematic view of the key 2 engaged with the office 2;

fig. 5(b) is a schematic view of the key 2 engaged with the drawer 2;

fig. 6(a) is a schematic view of the key 3 engaged with the office 3;

fig. 6(b) is a schematic view of the key 3 engaged with the drawer 3;

FIG. 7(a) is an internal display view of an administrator key;

fig. 7(b) is an internal display view of the key 2;

fig. 7(c) is an internal display view of the key 3;

FIG. 7(d) is an inside view of the public door lock;

FIG. 7(e) is an inside display view of the office 2 lock;

FIG. 7(f) is an inside display view of the office 3 lock;

FIG. 7(g) is an inside view of the lock of the document cabinet 2;

FIG. 7(h) is an inside view of the lock of the document cabinet 3;

FIG. 8(a) is a schematic diagram of the cooperation of an administrator key with office 2;

fig. 8(b) is a schematic diagram of the cooperation of the administrator key with the office 3;

FIG. 8(c) is a schematic diagram of the cooperation of the administrator key and the data cabinet 2;

FIG. 8(d) is a schematic diagram of the cooperation of the administrator key and the data cabinet 3;

fig. 9(a) is a schematic diagram of the cooperation of the office key 2 and the office 2;

FIG. 9(b) is a schematic diagram of the office key 2 and the data cabinet 2;

fig. 10(a) is a schematic diagram of the office key 3 and the office 3;

FIG. 10(b) is a schematic diagram of the cooperation between the office key 3 and the data cabinet 3.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, the plug 2 is rotatable, the interior of the lock is divided into an inner pin 3 and an outer pin 4, the outer pin 4 is tightly connected to the inner pin 3 on one side and to the spring 5 on the other side. The lock body 1 and the lock core 2 are in an open state or a locked state determined by the matching condition of the spring 5 and the marble, when the lock body 1 and the lock core 2 are in the open state, the lock core 2 can rotate freely, at the moment, the inner marble 3 is parallel to the lock core marble under the compression of the spring 5 and is in a straight line, and the lock core marble props against a specific position of a key contour line.

As shown in fig. 2, the effective area of the key is divided into three parts, namely a first area a, a second area b and a third area c, and the combination area is divided into 12 areas, 23 areas, 13 areas and 123 areas, so that corresponding cylinder lock cylinders are correspondingly manufactured, and the lock cylinder suitable for the first area a, the lock cylinder suitable for the second area b, the lock cylinder suitable for the third area c, the lock cylinder suitable for the 12 areas, the lock cylinder suitable for the 23 areas, the lock cylinder suitable for the 13 areas and the lock cylinder suitable for the 123 areas. For the lock core only suitable for the first area a, the first area a is an effective area, the second area b and the third area c are blind areas, and the other same principles are adopted. The effective area and the blind area are matched on the same lock, the function of the effective area is not influenced by the blind area, and the keys are manufactured according to the above, so that the idea that a plurality of locks are unlocked by one key and different locks are unlocked by different keys is realized by the combination principle.

For convenience, the teeth of the key in the same effective area are set to be the same in height, and the pins of the corresponding lock cylinder are also the same in height, and the same in color are the same in specification.

Model one:

the model fully illustrates the design concept of the invention: a plurality of locks are opened by one key, and different locks are opened by different keys, so that the locks can be opened only if belonging to the function range of the locks, and cannot be opened if not belonging to the function range.

If so:

1. the administrator key can open the public door, the office 2 and the office 3;

2. the key 2 can open the public door, the office 2 and the drawer 2;

3. the key 3 can open the public door, the office 3 and the drawer 3;

4. the administrator key cannot open the drawer 2, 3 (for security)

1. Assume that the administrator's key body has a length of 3mm, a tooth height of 1mm in the effective first region, a tooth height of 1.5mm in the effective second region, a tooth height of 2mm in the effective third region, a width of 5.5mm in the keyhole 6, and a width of 7mm in the inner cylinder. If the key can open the lock cylinder 2, then the key body + tooth height + inner pins is equal to the inner lock cylinder width.

As in fig. 4(a) to 4(c), in the case of opening the doors of the administrator and the public door: the lock core 2 of the public door only has an effective third area ' containing inner pins, outer pins 4 and springs 5, and the areas 1 ' 2 ' do not contain the inner pins, the outer pins 4 and the springs 5. When the key is matched with the public door, the effective third area of the key enables the inner marble in the effective third area' of the lock core 2 to fall back, the outer marble 4 is blocked outside the inner lock core, and therefore the other end of the inner marble is flush with the hole of the inner lock core, and the lock can be opened.

The effective third zone' of the common gate has 2mm of inner marbles and 3mm of outer marbles 4.

The second zone ' of the lock cylinder effective in office 2 has inner pins, outer pins 4 and springs 5, while 1 ' 3 ' does not.

The effective second zone' of the office 2 has 2.5mm inner marbles and 2.5mm outer marbles 4.

The lock cylinder of the office 3 has only an effective first area ' with inner pins, and neither the outer pins 4 nor the springs 5, 2 ', 3 '.

The effective first zone' of the office 3 has 3mm inner marbles and 2mm outer marbles 4.

2. It is assumed that the key 2 has a key body length of 3mm, a tooth height of 2mm in the effective first region, a tooth height of 1.5mm in the effective second region, a tooth height of 2mm in the effective third region, a keyhole 6 width of 5.5mm, and an internal cylinder width of 7 mm.

In fig. 3(a) -3 (h), since the key 2 changes only the tooth height of the valid first area compared to the administrator key, the key 2 can still open the public door for the public doors and the office 2 whose valid areas are 2 'and 3'.

In fig. 5(a) -5 (b), in the case of a drawer 2 fitted with a key 2, the inner pins of the effective first region' of the drawer 2 are 2mm and the outer pins 4 are 3 mm.

However, for the administrator key, the tooth height of the effective first area is 1mm, the tooth height plus the total length of the key body plus the inner pins of the effective first area' of the drawer 2 is 6mm, and the width of the key cylinder 2 is 7mm, so that the other side of the inner pins cannot be flush with the hole of the key cylinder 2, the inner pins are recessed, and the door cannot be opened.

3. It is assumed that the key 3 has a key body length of 3mm, a tooth height of 1mm in the effective first region, a tooth height of 2mm in the effective second region, a tooth height of 2mm in the effective third region, a keyhole 6 width of 5.5mm, and an internal cylinder width of 7 mm.

In fig. 3(a) to 3(h), since the key 3 has only the tooth height of the valid second area changed from the administrator key, the key 3 can still be opened for the public door and the office 3 whose valid area is 1 '3'.

In the case of a drawer 3 fitted with a key 3, as in fig. 6(a) -6 (b), the effective second region' of the drawer 3 has 2mm inner pins and 3mm outer pins 4.

However, for the administrator key, the tooth height of the effective second region is 1.5mm, the total length of the tooth height plus the key body plus the inner pins of the effective first region' of the drawer 2 is 6.5mm, and the width of the lock cylinder 2 is 7mm, so that the other side of the inner pins cannot be flush with the hole of the lock cylinder 2, the inner pins are recessed, and the door cannot be opened.

Model two:

the difference between the model two and the model one is mainly that the shape and the position of the lock cylinder 2 and the key are changed. The first model has only one effective area, and the second model increases the effective area and also increases the range of key use.

The management range of the administrator key is increased, namely, the original locks which only can open public doors and offices are changed into the locks which can open all the locks including the drawers and the doors which can not be opened by other office personnel at any time, and the

drawers

2 and 3 have no confidentiality relative to the administrator. This key is equivalent to a "master key".

Because part of the key is changed from the original single-zone load to the double-zone or three-zone load, the strength of the key is greatly improved in the unlocking process

The use of model two is briefly described below with reference to fig. 7(a) -7 (h).

All locks can be unlocked by administrator keys

The office key 2 can open the office 2 and the data cabinet 2

The office key 3 can open the office 3 and the data cabinet 3

As in fig. 8(a) to 8(d), in the case of the opening of the administrator and the public door: the lock core 2 of the public door only has an effective third area ' containing inner pins, outer pins 4 and springs 5, and the areas 1 ' 2 ' do not contain the inner pins, the outer pins 4 and the springs 5. When the key is matched with the public door, the effective third area of the key enables the inner marble in the effective third area' of the lock core 2 to fall back, the outer marble 4 is blocked outside the inner lock core, and therefore the other end of the inner marble is flush with the hole of the inner lock core, and the lock can be opened.

The lock cylinder 2 of the office 2, which is an effective second area 'and 3', has inner pins, outer pins 4 and springs 5. Whereas the first region' is not the active region.

The effective second zone 'of office 2 has 2.5mm inner marbles, 2.5mm outer marbles 4, and the effective third zone' has 2mm inner marbles and 3mm outer marbles 4.

The lock core of the file cabinet 2 is an effective second area' which is provided with inner marbles, outer marbles 4 and springs 5. While the first region ', 3' is not the active region.

The effective second area' of the cabinet 2 has 2.5mm inner pins and 2.5mm outer pins 4.

The lock core of the office 3 is an effective first area' which is provided with inner pins, outer pins 4 and springs 5. While the second region ', 3' is not an active region.

The lock core of the file cabinet 3 is an effective first area 'and 3' with inner marble, outer marble 4 and spring 5. Whereas the second region' is not the active region.

The inner marble of the effective first area 'of the data cabinet 3 is 3mm, the outer marble 4 is 2mm, the inner marble of the effective third area' is 2mm, and the outer marble 4 is 3 mm.

2. If the key 2 has a key body length of 3mm, only the second zone and 3, without the first zone, and the effective second zone has a tooth height of 1.5mm, the effective third zone has a tooth height of 2mm, the keyhole 6 width is 5.5mm, and the internal cylinder width is 7 mm.

As shown in fig. 9(a) to 9(b), the key 2 has fewer first areas than the administrator key, so that in the cooperation of the office 2, the office 2 has two valid second areas 'and 3' both of which are exactly engaged with the key 2.

The cabinet has only a valid second zone ', and the key 2 has two valid zones, but only the valid second zone cooperates with the valid second zone' lock cylinder of the cabinet.

3. If the key body length of the key 3 is 3mm, only the first area and 3, there is no second area, and the tooth height of the effective first area is 1mm, the tooth height of the effective third area is 2mm, the width of the keyhole 6 is 5.5mm, and the width of the inner lock cylinder is 7 mm.

As shown in fig. 10(a) to 10(b), the key 3 has a smaller second area than the manager key, so that on the engagement of the office 3, although the key 3 has two effective areas, it is only the first area that is effective and the first area that is effective in the office' the cylinder engages.

The second zone is less for the key 3 than for the manager key, so that in the cooperation of the office 3, the office 3 has two active zones both cooperating with the key 3.

As can be seen from the above-mentioned specific model, the change of this invention compared with the common key and the common pin tumbler lock is: the key is changed according to the lock core, the lock core also reduces the inner marble, the outer marble 4 and the spring 5, the lock core only reduces the area with the structure, and the specific structure is not changed compared with the common lock core of the spring lock.

In the first model, the public door can be opened by three keys, and the public door only has a common lock cylinder structure in the effective third area ', and the first area '. 2 ' has no internal structure, so that when the keys are designed, the effective third areas of the three keys are the same structure and are matched with the public door, so that when the keys are inserted into the lock cylinder of the public door, the inner pins in the third area of the lock cylinder can be ejected, the other surface of the inner pins is flush with the boundary of the inner lock cylinder, and the inner lock cylinder can rotate, so that the public door can be opened. Likewise, the office door 2 can be opened by the manager and the key 2, and the effective area of the office 2 is 2', so the manager key and the key have the same structure of the second area, and so on.

In the second model, the same principle is also applied, but in terms of the lock core, if the original lock core is provided with all the inner pin outer pins 4 and the springs 5, and one corresponding inner pin outer pin 4 and the spring 5 are in a group, the invention is different from the common invention in that the area of the pins is reduced, and the area is changed into 2/3.

The method has the following specific advantages:

1. an office building has a public door (which can be used as an internal archive) and sixty offices, with three managers, and each manager is at least equipped with twenty one keys (one public door key for each person) on average to open all doors, while one office has ten office workers, each person has one public door key, one office key and one own desk key, and the total number of keys is 1863. If the price of each key is a yuan, and the monthly payroll of the administrator is 600 yuan, the total cost is 3663 yuan. If the present company adopts the design idea, the number of keys can be reduced to 622, and meanwhile, because the number of keys carried by opening the door each time is reduced, the management is convenient and quick, two managers can be cut, the monthly wage is 700 yuan, and the price of each key is 1.3 yuan, the total cost is 2208.6 yuan, so that 1454.4 yuan can be saved. If the amount of alloy for the key is taken into consideration, 12.41 kg of alloy can be saved by setting 10 g of alloy for each key.

As can be seen from this example, the advantages of the invention are: the time, energy and materials for matching the key are saved, the cost of managers is reduced, the money expenditure is reduced for companies, and the construction of a good society is facilitated for society.

2. If a building has a public door and 30 offices, each person is equipped with its own drawer, if there is only one manager, as is the case, the manager needs 31 keys (without private drawer keys) and each employee needs 3 keys. According to the idea of model one of the invention, everyone needs only one key to open the public door, his office and his drawer. And the manager can open the doors of all the public spaces except the drawer only by one key.

Therefore, the invention has the advantages that: for a company with huge personnel and numerous offices, the invention reduces the number of keys allocated to each person, thereby facilitating the use of everyone, and on the other hand, the management of the keys is greatly improved, and the number of the keys of the manager is reduced to one, so that if an accident occurs, doors in various public areas can be opened more quickly, and meanwhile, private drawers cannot be opened, thereby protecting the privacy of each worker.

5. For the concrete case of the second model, the management range of the administrator key is increased, namely, the original lock which can only open the public door and the office is changed into the lock which can open all the locks, and the concept of the master key is provided. Can open all doors not only improve efficiency, also bring people convenient and fast's user experience. For example, for one family, the door in the house comprises a bedroom, a kitchen and a toilet, if the family is a simple two-room one-hall, four doors are generally arranged, and four keys are needed to be opened, but for the general family, the four keys are very inconvenient to carry, so if a master key is arranged, all the doors can be opened only by one key, and on the other hand, if someone is arranged, the door is closed carelessly in one room, so that the door can be opened only by taking one master key, the corresponding key is not needed to be found in time, the trouble is reduced, and the time efficiency is also improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A spring lock and a key thereof are characterized by comprising a lock body (1), a rotatable lock core (2) positioned in the middle of the lock body (1), an inner spring (3), an outer spring (4) and a spring (5) used for propping against the outer spring (4), wherein the lock core (2) comprises a key hole (6);

the inner marble (3), the outer marble (4) and the spring (5) are all arranged in the lock body (1), one side of the inner marble (3) is a key hole (6), the other side of the inner marble is connected with the outer marble (4), and the other side of the outer marble (4) is connected with the spring (5);

when a key is inserted into the key hole (6), the key drives the inner marble (3) to move towards the outer marble (4) and pushes the outer marble (4) to move towards the spring (5) until one side of the inner marble (3) is completely overlapped with the boundary of the lock core (2), at the moment, the lock core (2) can rotate, and the marble lock is in an open state; when one side of the inner marble (3) can not be completely overlapped with the boundary of the lock core (2), the lock core (2) can not rotate at the moment, and the marble lock is in a locking state;

the key comprises a plurality of uneven serrations contactable with the inner pin (3), the plurality of serrations forming an undulating profile curve;

the contour curve is divided into an effective area and an ineffective area; the effective area refers to the condition that one or more sections of contour curves of the key can be correctly matched with the inner marble (3) of the lock core (2), so that one side of the inner marble (3) is completely overlapped with the boundary of the lock core (2), and the spring lock is in an open state; the invalid region means that the inner marble (3), the outer marble (4) and the spring (5) are not arranged in the lock core (2) corresponding to one or more sections of profile curves of the key or cannot be matched with the inner marble, so that the spring lock is in a locked state;

the lock cylinder (2) is a cylindrical lock cylinder made of copper;

the inner marble (3) and the outer marble (4) are arranged in a round hole of the lock core (2) and are cylindrical with different lengths; the pin tumbler lock is provided with 3 to 5 groups of inner pin tumblers (3) and outer pin tumblers (4);

the spring (5), the inner marble (3) and the outer marble (4) are distributed in a cross shape, a C shape, a straight shape or an S shape on the cylindrical surface where the lock core (2) is positioned;

the contour curve is a sawtooth curve, a rectangle curve, a circle curve, a spline curve and a combined curve thereof;

for a key with a profile curve, the active area and the inactive area are mutually reversible on different pin locks; assuming that a key is provided with three areas, namely a first area (a), a second area and a third area, when a lock cylinder (2) of a first spring lock only has a contour curve matched with the first area (a) on the key, so that all inner springs (3) are overlapped with the boundary of the lock cylinder (2), the key can open the first spring lock, and the first area (a) is an effective area; when the lock core (2) of the second spring lock only has a contour curve matched with a second area on the key, so that all the inner springs (3) are overlapped with the boundary of the lock core (2), the key can open the second spring lock, and the second area is an effective area; when the lock core (2) of the third spring lock only has a contour curve matched with a third area on the key, so that all the inner springs (3) are overlapped with the boundary of the lock core (2), the key can open the third spring lock, and the third area is an effective area; by analogy, when the lock core (2) of the fourth pin tumbler lock only has a contour curve matched with the first area (a) and the second area on the key, all the inner pins (3) are overlapped with the boundary of the lock core (2), the key can open the fourth pin tumbler lock, and the first area (a) and the second area are effective areas; when the lock cylinder (2) of the fifth spring lock only has a contour curve matched with the first area (a) and the third area on the key, so that all the inner springs (3) are overlapped with the boundary of the lock cylinder (2), the key can open the fifth spring lock, and the first area (a) and the third area are effective areas; when the lock core (2) of the sixth spring lock only has profile curves matched with the second area and the third area on the key, so that all the inner springs (3) are overlapped with the boundary of the lock core (2), the key can open the fifth spring lock, and the second area and the third area are both effective areas; when the lock core (2) of the seventh spring lock has a contour curve matched with the first area (a), the second area and the third area on the key, all the inner springs (3) are overlapped with the boundary of the lock core (2), the key can open the sixth spring lock, and the first area (a), the second area and the third area are effective areas; aiming at keys with different effective areas, different pin tumbler locks can be unlocked according to authority, the keys with a first area (a) and a second area can unlock a first pin tumbler lock, a second pin tumbler lock and a fourth pin tumbler lock, and the keys with the first area (a) only can unlock the first pin tumbler lock; according to the contour curve shape of the key, the contour curve refers to sawtooth shapes, rectangles, circles, spline curves and combination curves thereof, effective areas are set and freely combined, the matching relation between countless keys and the spring lock is obtained, and then the corresponding spring lock and the corresponding key are designed.