CN116927594A - A high-security double-stage lock cylinder - Google Patents

Abstract

The invention disclosed relates to the technical field of locks, and specifically discloses a high-security two-stage lock core, which includes a pair of lock core units. The lock core unit includes a rotating core column. The rotating core column is rotatably installed in the lock core shell. The rotating core column A keyhole is provided through the inside, and a set of pin holes perpendicular to the key hole is provided on the rotating core column. There are marbles slidingly installed in the pin hole. The lengths of marbles in different pinholes are different. A set of pin shells are provided above the rotating core column. , the pin shell is fixedly installed in the lock core shell. A pin is slidably installed in the pin shell. The pin corresponds to the position of the pin. A limiter is set in the middle of the pin. A spring is set in the upper section of the pin. The two ends of the spring They are respectively pressed against the top wall and limit table of the pin column housing; a pair of lock cylinder units are arranged front and back, and the lock cylinder unit on the rear side is rotated 90° with the center of the rotating cylinder as the axis. The invention increases the difficulty of technical opening and improves the safety of purely mechanical locks.

Description

A high-security double-stage lock cylinder

Technical field

The invention relates to the technical field of locks, specifically a high-security double-stage lock core.

Background technique

A lock cylinder is a critical component used to control a door lock or other type of lock. It is usually made of metal or plastic and has complex internal structures and mechanisms to ensure that only the correct key or combination can open the lock. The design and material of the lock cylinder depend on the type and purpose of the lock. Common lock cylinder types include keyhole lock cylinders, digital password lock cylinders, fingerprint lock cylinders, electronic chip lock cylinders, etc. As a purely mechanical lock cylinder, the keyhole lock cylinder is still difficult to be replaced and is widely used in various occasions.

The security of the lock cylinder depends on the quality of its internal structure and materials. Some advanced security lock cylinders may use complex chip technology, anti-pry designs, or measures to prevent copying to increase security and prevent tampering. There are many types of locks on the market at present, and the anti-theft effects are generally divided into: A-level locks can prevent technical unlocking for not less than 1 minute; A-level anti-theft locks can prevent destructive opening for not less than 15 minutes; technical unlocking can be prevented for not less than 1 minute 5 minutes, B-level anti-theft locks can prevent destructive opening for no less than 60 minutes; Super B-level anti-theft locks can prevent technical unlocking for no less than 180 minutes, and prevent destructive opening for no less than 30 minutes.

With the traditional lock cylinder structure (as shown in Figure 8), when the pins in the lock cylinder match the key completely and the tops of the pins are at the same level, the lock can be rotated to open, and its anti-theft effect is average. Therefore, a new type of high-security double-stage lock cylinder is urgently needed to provide a good solution to the shortcomings of the existing technology.

Contents of the invention

The purpose of the present invention is to provide a high-security double-stage lock core to solve the problems raised in the above background technology.

In order to achieve the above objects, the present invention provides the following technical solutions:

A high-security double-section lock cylinder includes a pair of lock cylinder units. The lock cylinder unit includes a rotating core column. The rotating core column is rotatably installed in the lock core shell. A keyhole is provided through the rotating core column. , the rotating core column is provided with a set of pin holes perpendicular to the keyhole, and marbles are slidably installed in the pin holes. The lengths of marbles in different pin holes are different, and a set of pin shells are provided above the rotating core column. , the pin shell is fixedly installed in the lock core shell, a pin is slidably installed in the pin shell, the pin corresponds to the position of the pin, a limiting platform is provided in the middle of the pin, and the pin The upper section is equipped with a spring, and the two ends of the spring are respectively against the top wall and the limit table of the pin housing;

A pair of lock cylinder units are arranged front to back, and the lock cylinder unit on the rear side is rotated 90° with the center of the rotating cylinder as the axis.

Further, the pin housing includes a pair of square half-shells, the four corners of the half-shells are provided with corner seats, the corner seats are provided with plug-in holes, and the upper sides of the half-shells on both sides have plug-in holes and plug-in holes. Post plug-in fit.

Further, a semicircular sleeve is provided at the bottom of the half shell, and the semicircular sleeves on both sides of the half shell form a pin sleeve. The pin is slidably installed in the pin sleeve, and the port of the pin sleeve is close to the rotating core. The circumferential outer wall of the column.

Further, one end of the circumferential outer wall of the rotating core column is provided with a coil spring top seat, and an outer side of one end of the rotating core column is provided with a coil spring sleeve. The coil spring sleeve is fixedly installed in the lock cylinder shell, and the coil spring sleeve is fixedly installed in the lock core shell. A coil spring base is provided on the circumferential inner wall of the spring sleeve, a coil spring is placed in the coil spring sleeve, and the two ends of the coil spring are respectively connected to the coil spring top seat and the coil spring base.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention is equipped with a double-stage lock cylinder and is equipped with a key. The front-stage lock cylinder and the rear-stage lock cylinder are not in the same direction and have a 90° difference. When the front-stage lock core pins completely match the key, the front-stage lock core can be rotated 90° to the rear-stage lock core. The lock cylinders of the two sections have the same direction, and the exclusive key can push the second section of the lock cylinder. The door lock can be opened only when all the pins of the front and rear lock cylinders match the key. The invention effectively increases the difficulty of technical opening and improves the safety of purely mechanical locks.

2. In the present invention, the pin shell is composed of a pair of half shells, and the half shells are connected through plug-in posts, which facilitates mass production of parts and rapid assembly of locks.

3. In the present invention, a semicircular sleeve is assembled on the half shell, and the semicircular sleeves on both sides form a pin sleeve. The structural design is simplified and the number of parts is reduced.

4. In the present invention, after the key is pulled out, under the elastic force of the coil spring and the limiting effect of the coil spring top seat and the coil spring base, the rotating core column can automatically return to the locked position, without manual locking, and the convenience and safety are further improved. promote.

Description of the drawings

Figure 1 is a schematic structural diagram of a high-security double-stage lock cylinder;

Figure 2 is an exploded schematic diagram of the structure of a high-security two-stage lock cylinder;

Figure 3 is a cross-sectional view of the lock core unit;

Figure 4 is a schematic structural diagram of the half shell and pin;

Figure 5 is a schematic structural diagram of the half shell;

Figure 6 is a schematic structural diagram of the coil spring sleeve and coil spring;

Figure 7 is a schematic diagram of the partial structure at K in Figure 6;

Figure 8 shows the traditional lock cylinder structure.

In the picture: 1. Lock core unit; 2. Rotating core; 3. Key hole; 4. Pin hole; 5. Pin; 6. Pin; 7. Limiting table; 8. Half shell; 9. Angle seat; 10. Plug-in hole; 11. Plug-in post; 12. Semi-circular sleeve; 13. Pin shell; 14. Spring; 15. Coil spring sleeve; 16. Coil spring base; 17. Coil spring top seat; 18. Coil spring .

Detailed ways

Embodiment 1: Please refer to Figures 1 to 3. A high-security two-stage lock core includes a pair of lock core units 1. The lock core unit 1 includes a rotating core 2. The rotating core 2 is rotatably installed on the lock. In the core shell, a key hole 3 is provided through the rotating stem 2. A set of pin holes 4 perpendicular to the key hole 3 are provided on the rotating stem 2. Pins 5 are slidably installed in the pin holes 4. The pins 5 in different pin holes 4 have different lengths. A set of pin shells 13 are provided above the rotating core 2. The pin shells 13 are fixedly installed in the lock core shell. The pin shells 13 are slidably installed in the lock core shell. There is a pin 6, which corresponds to the position of the pin 5. A limiting platform 7 is provided in the middle of the pin 6. A spring 14 is set in the upper section of the pin 6. Both ends of the spring 14 are respectively pressed against each other. On the top wall of the pin housing 13 and the limiting platform 7;

A pair of lock cylinder units 1 are arranged front to back, and the lock cylinder unit 1 on the rear side is rotated 90° with the center of the rotating cylinder 2 as the axis.

When unlocking the lock in this embodiment, the first half of the key needs to be inserted into the key hole 3 of the rotating cylinder 2 of the front lock cylinder unit 1. The protrusion on the key lifts up the pin 5 in the pin hole 4. The front lock cylinder unit 1 The tops of different marbles 5 are pushed to the same position, that is, the position of the circumferential outer surface of the rotating core 2. At this time, the pin 6 withdraws from the pin hole 4 and the lower end is also located at the circumferential outer surface of the rotating core 2. At this time, the pin 6 is The key can drive the rotating core 2 to rotate;

When the rotating stem 2 rotates 90°, the position of the key hole 3 on the front and rear rotating stem 2 is the same. At this time, the key continues to be inserted into the key hole 3 of the rear lock cylinder unit 1. Repeat the previous operation to complete the unlocking.

This embodiment is provided with a double-stage lock cylinder and is equipped with a key. The front-stage lock cylinder and the rear-stage lock cylinder are not in the same direction and have a 90° difference. When the front-stage lock core pins completely match the key, the front-stage lock core can be rotated 90° to the rear-stage lock cylinder. The direction of the lock cylinder is the same, and the exclusive key can push the second lock cylinder. Only when all the marbles in the front and rear lock cylinders match the key can the door lock be opened. This embodiment effectively increases the difficulty of technical opening and improves the safety of purely mechanical locks.

Embodiment 2: Please refer to Figures 4 to 5. A high-security two-stage lock cylinder is different from Embodiment 1 in that the pin housing 13 includes a pair of square half-shells 8. The four corners of the half-shells 8 An angle seat 9 is provided, and a plug hole 10 is provided in the corner seat 9. The upper plug holes 10 of the half shell 8 on both sides are plug-fitted with the plug posts 11.

In this embodiment, the pin shell 13 is composed of a pair of half shells 8, and the half shells 8 are connected through a plug-in post 11, which facilitates mass production of parts and quick assembly of locks.

Embodiment 3: Please refer to Figures 4 to 5, a high-security double-stage lock core. The difference from Embodiment 2 is that a semi-circular sleeve 12 is provided at the bottom of the half shell 8, and the semi-circular sleeves 12 on both sides of the half shell 8 12 form a pin sleeve, the pin 6 is slidably installed in the pin sleeve, and the port of the pin sleeve is close to the circumferential outer wall of the rotating core 2.

In this embodiment, the half-shell 8 is assembled with a semi-circular sleeve 12, and the semi-circular sleeves 12 on both sides form a pin sleeve. The structural design is simplified and the number of parts is reduced.

Embodiment 4: Please refer to Figures 6 to 7, a high-security two-stage lock core. The difference from Embodiment 1 is that one end of the circumferential outer wall of the rotating core 2 is provided with a coil spring top seat 17. A coil spring sleeve 15 is provided on the outside of one end of the core column 2. The coil spring sleeve 15 is fixedly installed in the lock core shell. A coil spring base 16 is provided on the circumferential inner wall of the coil spring sleeve 15. The coil spring sleeve 15 A coil spring 18 is placed in the middle, and the two ends of the coil spring 18 are connected to the coil spring top seat 17 and the coil spring base 16 respectively.

In this embodiment, after the key is pulled out, under the elastic force of the coil spring 18 and the limiting effect of the coil spring top seat 17 and the coil spring base 16, the rotating stem 2 can automatically return to the locked position, without manual locking, and is more convenient and convenient. Security is further improved.

Claims (4)

1. A high-security double-stage lock core, including a pair of lock core units (1), characterized in that: the lock core unit (1) includes a rotating core column (2), and the rotating core column (2) rotates Installed in the lock core shell, a keyhole (3) is provided through the rotating core column (2), and a set of pinholes (4) perpendicular to the keyhole (3) are provided on the rotating core column (2). , marbles (5) are slidably installed in the marble holes (4), the lengths of the marbles (5) in different marble holes (4) are different, and a set of pin shells (13) are provided above the rotating core column (2). ), the pin shell (13) is fixedly installed in the lock cylinder shell, and a pin (6) is slidably installed in the pin shell (13). The pin (6) is in the same position as the marble (5). Correspondingly, a limiting platform (7) is provided in the middle of the pin (6), a spring (14) is set in the upper section of the pin (6), and the two ends of the spring (14) are respectively pressed against the pin shell ( On the top wall of 13) and the limiter (7); A pair of lock cylinder units (1) are arranged front to back, and the lock cylinder unit (1) on the rear side is rotated 90° with the center of the rotating cylinder (2) as the axis. 2. A high-security double-section lock core according to claim 1, characterized in that: the pin shell (13) includes a pair of square half shells (8), and the four corners of the half shell (8) An angle seat (9) is provided, and a plug hole (10) is provided in the corner seat (9). The upper plug holes (10) of the half shells (8) on both sides are plugged into the plug posts (11). Cooperate. 3. A high-security double-stage lock core according to claim 2, characterized in that: a semicircular sleeve (12) is provided at the bottom of the half shell (8), and the semicircular sleeves on both sides of the half shell (8) (12) forms a pin sleeve, the pin (6) is slidably installed in the pin sleeve, and the port of the pin sleeve is close to the circumferential outer wall of the rotating core column (2). 4. A high-security double-stage lock core according to claim 1, characterized in that: one end of the circumferential outer wall of the rotating core column (2) is provided with a coil spring top seat (17), and the rotating core column (2) is provided with a coil spring top seat (17). (2) A coil spring sleeve (15) is provided on the outside of one end. The coil spring sleeve (15) is fixedly installed in the lock core shell. A coil spring base (16) is provided on the circumferential inner wall of the coil spring sleeve (15). ), a coil spring (18) is placed in the coil spring sleeve (15), and the two ends of the coil spring (18) are connected to the coil spring top seat (17) and the coil spring base (16) respectively.