CN112681903B

CN112681903B - Lock core

Info

Publication number: CN112681903B
Application number: CN202110002856.2A
Authority: CN
Inventors: 李启平; 何海雄; 李保福; 杨绍华
Original assignee: Zhuhai Youte IoT Technology Co Ltd
Current assignee: Zhuhai Unitech Power Technology Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-08-16
Anticipated expiration: 2041-01-04
Also published as: CN112681903A

Abstract

The application relates to a lock cylinder, and belongs to the technical field of locks. The application provides a lock core, includes: a lock case; the lock core is rotatably arranged in the lock shell, and a key hole is formed in the lock core; the locking piece is movably arranged between the inner wall of the lock shell and the lock cylinder and used for locking the lock cylinder; the pin tumbler is axially movable along the pin tumbler and is circumferentially and rotatably arranged in the lock liner, and an unlocking bulge matched with a key is formed on the pin tumbler; when a correct key is inserted into the key hole, the key can stir the pin tumbler to move axially and rotate circumferentially to an unlocking position, and when the pin tumbler is located at the unlocking position, the pin tumbler allows the locking piece to move so as to release the locking of the lock cylinder. The lock core technology is high in unlocking difficulty, good in safety, simple in structure and easy to assemble and manufacture.

Description

Lock core

Technical Field

The application relates to the technical field of locks, in particular to a lock cylinder.

Background

The lock core for locking the lock pin through the finger ball is available in the market, and the unlocking method is that the finger ball is shifted to move longitudinally through the snake-shaped groove of the key, so that the slotting position of the finger ball is aligned with the lock pin, and the lock pin can float freely to realize unlocking. The application of the scheme has limitation, the diameter of the finger bead is larger than that of the blade, the number of the finger beads is limited when the space of the lock cylinder is limited, and the key amount of the lock cylinder is reduced.

Disclosure of Invention

Therefore, the lock cylinder is large in technical unlocking difficulty, good in safety, simple in structure and easy to assemble and manufacture.

An embodiment of the present application provides a lock cylinder, including: a lock case; the lock core is rotatably arranged in the lock shell, and a key hole is formed in the lock core; the locking piece is movably arranged between the inner wall of the lock shell and the lock cylinder and used for locking the lock cylinder; the pin tumbler is axially movable along the pin tumbler and is circumferentially and rotatably arranged in the lock liner, and an unlocking bulge matched with a key is formed on the pin tumbler; when a correct key is inserted into the key hole, the key can stir the pin tumbler to move axially and rotate circumferentially to an unlocking position, and when the pin tumbler is located at the unlocking position, the pin tumbler allows the locking piece to move so as to release the locking of the lock cylinder.

In the lock core of the embodiment of the application, when the pin tumbler is shifted by the key to move axially and rotate circumferentially to the unlocking position, the lock cylinder and the lock shell can be unlocked. Under the condition that sets up the marble of same quantity, the technical unlocking degree of difficulty of the lock core in the embodiment of this application is bigger, and the security is better, and simple structure easily assembles manufacturing.

In addition, the lock core according to the embodiment of the application also has the following additional technical characteristics:

according to some embodiments of the application, a notch is formed on one side of the locking piece close to the marble, an insertion part which can be inserted into the notch is formed on the marble, and the insertion part extends inwards from the outer peripheral surface of the marble along the radial direction of the marble; when the pin is in the unlocked position, the insertion portion is aligned with the notch.

The insertion part in the form is used for being matched with the notch of the locking piece in an embedded mode when the marble is located at the unlocking position, the locking piece is allowed to retract into the outer peripheral surface of the lock cylinder, meanwhile, the insertion part does not protrude out of the outer peripheral surface of the marble, and circumferential rotation of the marble in the marble hole cannot be influenced.

According to some embodiments of the application, the outer circumferential surface of the pin is formed with a groove, and the insertion portion is a protruding partition plate provided in the groove, the protruding partition plate extending in an axial direction of the pin.

The insertion part is formed by arranging the groove, when the notch of the locking piece is matched with the insertion part, the groove provides space for the locking piece to be close to the marble, and the locking piece is simple in structure and easy to manufacture.

According to some embodiments of the present application, the lock cylinder further includes a resilient return assembly for driving the pin to return to a locking position after a proper key is pulled out of the key hole, and when the pin is in the locking position, the pin prevents the locking member from moving to lock the cylinder.

When an incorrect key is inserted into the key hole, the elastic reset component drives the marble to move to the locking position, and when no key is inserted into the key hole, the marble is kept at the locking position under the action of the elastic reset component. Through setting up the elasticity subassembly that resets, not only can reduce the probability that the pellet shot from a slingshot moved to the unblock position at random, can also guarantee to effectively stir the pellet shot from a slingshot motion when using correct key to insert the key hole.

According to some embodiments of the application, the elastic reset assembly comprises a first elastic reset piece and a second elastic reset piece, the first elastic reset piece is used for driving the marble to reset axially, and the second elastic reset piece is used for driving the marble to reset circumferentially.

Compared with the mode that the elastic reset component is integrated and simultaneously drives the marbles to reset axially and circumferentially, in the lock core provided by the embodiment of the application, the elastic reset pieces for driving the marbles to reset axially and circumferentially are separately arranged, so that the structure of each elastic reset piece is simplified, the cost is reduced, the phenomenon that the marbles reset axially and circumferentially due to failure of the elastic reset component are failed is avoided, and the reliability is higher.

According to some embodiments of the present application, a restoring protrusion is formed on an outer circumferential surface of the pin, and the second elastic restoring member is connected to the restoring protrusion.

Through the second elasticity piece that resets act on the arch that resets, can drive marble circumference simply effectively and reset.

According to some embodiments of the present application, a ball hole for accommodating the ball is provided in the cylinder core, the ball hole communicates with the key hole through a communication port, the unlocking protrusion is formed on an outer circumferential surface of the ball, and the unlocking protrusion passes through the communication port to enter the key hole.

A communicating opening is formed below the marble hole, and along with axial movement and circumferential swing of the marble, the unlocking protrusion is stirred by the key to circumferentially swing in the communicating opening.

According to some embodiments of the application, the inner wall of the communication port has a first stop surface and a second stop surface which are oppositely arranged, and the first stop surface and the second stop surface are used for stopping the unlocking protrusion so as to limit the circumferential rotation range of the pin.

According to some embodiments of the application, the lock further comprises a key, wherein a snake-shaped groove is formed in the key, the heights of the bottoms of the snake-shaped groove are different, in the process that the key is inserted into the key hole, the unlocking protrusion moves along the snake-shaped groove, so that the pin moves along the axial direction of the pin, the heights of the bottoms of the snake-shaped groove are changed, and the bottom of the snake-shaped groove acts on the unlocking protrusion to realize that the pin rotates along the circumferential direction of the pin.

According to some embodiments of this application, still include the key, be equipped with the snake-shaped groove on the key, the protruding angle in bottom surface of snake-shaped groove is inconsistent the key inserts the in-process of key hole, the unblock is protruding to be followed the snake-shaped groove removes, so that pellet shot from a slingshot is along its axial displacement, through the protruding angle in bottom surface of snake-shaped groove changes, the bottom surface in snake-shaped groove acts on unblock is protruding, in order to realize pellet shot from a slingshot is along its circumferential direction.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a lock cylinder provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a cylinder core of a lock cylinder provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a cylinder core of the lock cylinder provided in the embodiment of the present application;

FIG. 4 is a schematic view of a locking member of a plug engaged with a pin according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a pin tumbler of a lock cylinder provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second elastic resetting piece of the lock cylinder provided by the embodiment of the application;

fig. 7 is a schematic structural view of a second elastic restoring member of the lock cylinder provided by the embodiment of the present application in cooperation with a pin (with a key inserted);

fig. 8 is a schematic structural diagram of the second elastic restoring member of the lock cylinder cooperating with the pin tumbler according to the embodiment of the present application (no key is inserted or a correct key is inserted in place);

FIG. 9 is a schematic structural view of a cylinder of the lock cylinder according to the embodiment of the present application, wherein a pin is installed in the cylinder;

FIG. 10 is an enlarged view of a portion of FIG. 9 at B;

FIG. 11 is a schematic view of a key according to one form of lock cylinder provided by an embodiment of the present application;

fig. 12 is a schematic structural diagram of another form of key for a lock cylinder provided in an embodiment of the present application;

fig. 13 is a cross-sectional view of a lock cylinder provided in an embodiment of the present application.

Icon: 100-a lock cylinder; 10-a lock liner; 11-a keyhole; 12-a latch slot; 13-a bullet hole; 14-a communication port; 141-a first stop face; 142-a second stop surface; 15-expanding the mouth; 16-an insert sheet; 20-a lock; 21-a first side of the lock; 211-notch; 22-a latch second side; 30-marbles; 31-an unlocking protrusion; 32-an insertion portion; 321-an insert first end; 323-third end of insertion portion; 324-insertion section fourth end; 33-a reset bump; 34-a groove; 341-groove first sidewall; 343-bottom wall of the groove; 35-outer peripheral surface; 36-marble first end; 37-a pin second end; 40-a key; 41-serpentine groove; 411-serpentine groove bottom surface; 412-serpentine groove side; 413-a serpentine groove projection; 414-slotting; 4141-dividing groove bottom wall; 51-a first elastic return member; 52-a second elastic restoring member; 521-a first clip; 522-a second jaw; 523-mounting hook; 60-latch member reset.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, a key cylinder 100 according to an embodiment of the present invention includes a lock case (not shown), a cylinder 10, a locking member 20, and pins 30. The lock core 10 is rotatably arranged in the lock shell, and a key hole 11 is arranged on the lock core 10. A locking member 20 is movably arranged between the inner wall of the lock housing and the cylinder core 10 for locking the cylinder core 10. The pin 30 is axially movably and circumferentially rotatably disposed in the cylinder tube 10, and an unlocking protrusion 31 for engaging with the key 40 is formed on the pin 30. When a correct key 40 is inserted into the keyhole 11, the key 40 can toggle the pin 30 to move axially and rotate circumferentially to an unlocking position, and when the pin 30 is in the unlocking position, the pin 30 allows the lock member 20 to move to unlock the cylinder 10.

In the lock core 100 of the embodiment of the application, when the pin 30 is shifted by the key 40 to move axially along the pin and rotate circumferentially to the unlocking position, the cylinder 10 and the lock case can be unlocked. On one hand, under the condition that the same number of marbles are arranged, the technical unlocking difficulty of the lock cylinder 100 in the embodiment of the application is higher, and the safety is better; on the other hand, the lock cylinder 100 in the embodiment of the present application can arrange a smaller number of pins 30, that is, can obtain the same technical unlocking difficulty as other common lock cylinders, and on the premise of the same technical unlocking difficulty, the number of pins 30 arranged in the lock cylinder 100 in the embodiment of the present application is smaller, so that the structure is simpler, and the assembly and the manufacture are easy.

The following describes the structure and interconnection of the various components of the lock cylinder 100 of the embodiment of the present application.

In some embodiments of the present application, the key cylinder 100 includes a plurality of pins 30, the plurality of pins 30 are arranged at intervals along the axial direction of the cylinder liner 10 in the cylinder liner 10, the plurality of pins 30 are arranged in parallel, and the axial direction of each pin 30 is perpendicular to the axial direction of the cylinder liner 10. For example, the pins 30 are three in number.

In other embodiments, the lock cylinder 100 may be provided with only one pin 30 and incorporate other locking structures.

The plurality of pins 30 in the embodiment of the present application have the same configuration, and the specific configuration of one of the pins 30 and its connection with other components will be described below as an example.

The pin 30 has an unlocked position and a locked position.

When the correct key 40 is inserted into the keyhole 11 and is inserted in place, the pin 30 is in the unlocking position, the pin 30 is in the preset axial position in the axial direction thereof and has the preset circumferential angle in the circumferential direction thereof, and the pin 30 allows the lock member 20 to move to unlock the cylinder 10;

under other conditions, the pin tumbler 30 is not in the unlocking position, the pin tumbler 30 is not in the preset axial position in the axial direction, and does not have the preset circumferential angle in the circumferential direction, and at the moment, the lock core 10 and the lock shell are locked into a whole through the locking piece 20;

when no key is in the keyhole 11, the pin 30 is in a locking position, the cylinder 10 and the lock shell are locked together by the locking member 20, and when a correct key 40 is inserted into the keyhole 11, the key 40 can shift the pin 30 to move axially and rotate circumferentially.

Referring to fig. 1, the key cylinder 100 further optionally includes a resilient return assembly for driving the pin 30 to return to the lock position after the correct key 40 is removed from the keyway 11, and when the pin 30 is in the lock position, the pin 30 prevents the lock member 20 from moving to lock the cylinder 10.

Through the elastic resetting component, the marble 30 can be driven to move to the locking position, the probability that the marble 30 randomly moves to the unlocking position can be reduced, and the marble 30 can be effectively stirred to move when a correct key 40 is inserted into the key hole 11.

Referring to fig. 1, in some embodiments of the present application, the elastic restoring assembly includes a first elastic restoring member 51 and a second elastic restoring member 52, the first elastic restoring member 51 is used for driving the pin 30 to axially restore, and the second elastic restoring member 52 is used for driving the pin 30 to circumferentially restore.

The elastic reset pieces for resetting the driving marble 30 along the axial direction and the circumferential direction of the driving marble are separately arranged, so that the structure of each elastic reset piece is simplified, and the cost is reduced.

In other embodiments, the elastic reset piece which can also integrate the two-dimensional reset function can simultaneously drive the axial reset and the circumferential reset of the pin tumbler, occupies small space in the cylinder liner 10, and is easy to assemble.

Referring to fig. 2 and 3, the cylinder 10 is rotatably disposed in the housing, a key hole 11, a pin groove 12 and a ball hole 13 are formed in the cylinder 10, the pin groove 12 communicates with the key hole 11 through the ball hole 13, the pin groove 12 is used for accommodating the locking member 20, and the ball hole 13 is used for accommodating the ball 30.

Referring to fig. 3, for convenience of description, an axial direction of the cylinder core 10 is defined as an x direction, a moving direction of the tumbler 30 relative to the cylinder core 10 is defined as a y direction, a moving direction of the locking member 20 relative to the cylinder core 10 is defined as a z direction, and the x direction, the y direction and the z direction are perpendicular to each other.

The above-mentioned y direction and z direction are the postures of the cylinder 10 when the pin 30 is located at the lock position; when the cylinder core 10 is turned in the axial direction by turning with the correct key 40, the absolute positions in the y-direction and the z-direction change accordingly.

Referring to fig. 2 and 3, in the cylinder core 10, a longitudinal direction of the key hole 11 extends in an x direction, a width direction of the key hole 11 extends in a y direction, an axial direction of the ball hole 13 extends in the y direction, the pin groove 12 extends in a z direction, and the pin groove 12 communicates with the key hole 11 through the ball hole 13.

Referring to fig. 4, two sides of the locking member 20 in the z direction are a locking member first side 21 and a locking member second side 22, respectively, where the locking member first side 21 is a side close to the marble 30. When the pin 30 is in the unlocking position, the pin 30 is partially embedded in the first side 21 of the lock member, so that the pin 30 is continuously embedded after the lock member 20 contacts with the outer peripheral surface 35 of the pin 30, the second side 22 of the lock member enters the outer peripheral surface of the cylinder 10, and the lock of the cylinder 10 and the lock shell is released.

Referring to fig. 4, in some embodiments of the present disclosure, the first locking member side 21 of the locking member 20 is provided with a notch 211, the pin 30 is formed with an insertion portion 32 that can be inserted into the notch 211, and the insertion portion 32 extends from the outer circumferential surface 35 of the pin 30 inward along the radial direction of the pin 30; when the pin 30 is in the unlocked position, the insertion portion 32 is aligned with the notch 211.

When the inserting portion 32 is aligned with the notch 211, the key 40 is turned to rotate the cylinder 10, the inner wall of the lock case presses the second side 22 of the locking member, the locking member 20 is driven to slide in the pin slot 12 and approach the pin 30, and the inserting portion 32 is inserted into the notch 211 to allow the locking member 20 to approach the pin 30 until the second side 22 of the locking member is flush with the outer peripheral surface of the cylinder 10, so that the lock case 10 and the lock case are unlocked.

By limiting the configuration of the insertion portion 32 to the radially inward region of the outer peripheral surface 35 on the pin 30, it is possible to ensure that the maximum circumferential contour of the segment of the pendulum 30 that engages with the lock member 20 is a cylindrical surface, so that the lock member first side 21 abuts against the outer peripheral surface 35 during the circumferential rotation of the pendulum 30, and the position of the lock member 20 in the z direction is maintained.

In other embodiments, the first side 21 of the locking member and the pin 30 may also allow the locking member 20 to move toward the pin 30 by other matching methods, for example, the first side 21 of the locking member is provided with a protrusion, the outer peripheral surface of the pin 30 is provided with a groove, and the protrusion is inserted into the groove to provide a space for the locking member 20 to approach the pin 30.

The following illustrates a specific configuration of the insertion portion 32 of the pin 30.

Referring to fig. 5, a groove 34 is formed on an outer circumferential surface 35 of the pin 30, and the insertion portion 32 is a convex partition plate disposed in the groove 34 and extending in an axial direction of the pin 30.

Specifically, the four circumferential ends of the insertion portion 32 are an insertion portion first end 321, an insertion portion second end (not shown), an insertion portion third end 323, and an insertion portion fourth end 324, respectively, where the insertion portion first end 321 and the insertion portion second end are opposite ends of the insertion portion 32 in the axial direction of the pin 30, the insertion portion third end 323 and the insertion portion fourth end 324 are opposite ends in the radial direction of the pin 30, and the insertion portion fourth end 324 is an end away from the axial line of the pin 30 in the radial direction.

Two grooves 34 are arranged, the two grooves 34 are arranged at intervals along the circumferential direction of the pin 30 and located at the same axial position, each groove 34 is formed by radially inwards recessing from the outer circumferential surface 35 of the pin 30, and two side walls of the groove 34 in the axial direction of the pin 30 are a groove first side wall 341 and a groove second side wall (not marked in the figure).

The insert first end 321 is connected to the groove first sidewall 341, the insert second end is connected to the groove second sidewall, the insert third end 323 is connected to the groove bottom wall 343, and the insert fourth end 324 is flush with the outer peripheral surface 35.

In other embodiments, the insertion portion 32 may be a convex rib protruding from the end of the pin 30 along the self-axial direction (i.e., y-direction) of the pin 30, so as to simplify the structure of the pin 30 and facilitate the manufacturing process.

Referring to fig. 1, the first elastic restoring member 51 is a straight spring, and the first elastic restoring member 51 is disposed in the cylinder core 10 and is used for driving the pin 30 to axially restore. The two ends of the pin 30 in the axial direction are a pin first end 36 and a pin second end 37 respectively, the first elastic reset piece 51 is arranged in the pin hole 13 along the y direction, and the two ends of the first elastic reset piece 51 are abutted against the inner wall of the lock cylinder 10 and the pin first end 36 respectively. One end of the spring hole 13 penetrates through the outer peripheral surface of the lock core 10 in the y direction and is provided with a flaring cavity 15 for accommodating the second elastic resetting piece 52, and the other end of the spring hole is the inner wall of the lock core 10 and is used for installing the first elastic resetting piece 51.

The pin 30 can be driven in the pin bore 13 in the y-direction back to a predetermined axial position by means of the first elastic return element 51.

Referring to fig. 5, a return protrusion 33 is formed on the outer circumferential surface 35 of the pin 30, and the second elastic return element 52 is fixed on the cylinder core 10 and connected to the return protrusion 33.

Referring to fig. 6, the second elastic restoring member 52 is an elastic closing clip, and has a first clip 521, a second clip 522 and a mounting hook 523.

Referring to fig. 3, the pin hole 13 of the cylinder 10 is communicated with the outside of the cylinder 10 through the mouth-expanding cavity 15, and the inside of the mouth-expanding cavity 15 is provided with an insert 16 for installing the second elastic restoring member 52.

The second elastic restoring element 52 is inserted into the flaring cavity 15, so that the mounting hook 523 is hung on the insertion piece 16, and the second elastic restoring element 52 is mounted in the lock cylinder 10. The reset protrusion 33 is clamped between the first clip 521 and the second clip 522, and the marble 30 is driven to be circumferentially reset by the first clip 521 and the second clip 522.

Referring to fig. 7, in the process of using the key 40 to be inserted into the keyhole 11, the key 40 pushes the unlocking protrusion 31 to swing the pin 30 in the circumferential direction, the angular position of the reset protrusion 33 is changed, and the pin 30 is allowed to swing by the elastic deformation of the second elastic reset piece 52.

Referring to fig. 8, when a key is inserted into the keyhole 11, the first clip 521 and the second clip 522 of the second elastic restoring member 52 clamp the restoring protrusion 33, so that the pin 30 is at a predetermined circumferential angle in the circumferential direction.

In some embodiments of the present application, the second elastic restoring element 52 is a metal clip with elasticity, and drives the pin 30 to circumferentially restore through its own elasticity, so that the structure is simple and the manufacturing and assembling are easy.

In other embodiments, an elastic layer may be added inside the first clip 521 and the second clip 522, respectively, and the elastic layer drives the pin 30 to circumferentially return.

Referring to fig. 5, the reset protrusion 33 and the unlock protrusion 31 are arranged at intervals in the axial direction of the pin 30.

The section provided with the unlocking protrusion 31 is rotatably arranged on the bullet hole 13, the section provided with the resetting protrusion 33 is exposed in the flaring cavity 15 outside the bullet hole 13, and the resetting protrusion 33 and the second elastic resetting piece 52 are matched with each other in the flaring cavity 15.

Referring to fig. 9 and 10, in some embodiments of the present application, the tumbler hole 13 communicates with the key hole 11 through the communication port 14, the unlocking protrusion 31 is formed on the outer circumferential surface 35 of the tumbler 30, and the unlocking protrusion 31 passes through the communication port 14 to enter the key hole 11.

The bottom of the bullet hole 13 is provided with a communication port 14 for the unlocking protrusion 31 of the bullet 30 to pass through. During the circumferential oscillation of the pin 30, the unlocking protrusion 31 oscillates within the opening range of the communication port 14.

Referring to fig. 10, further, the inner wall of the communication port 14 has a first stop surface 141 and a second stop surface 142 which are oppositely arranged, and the first stop surface 141 and the second stop surface 142 are used for stopping the unlocking protrusion 31 to limit the circumferential rotation range of the pin 30.

Referring to fig. 11 and 12, the key 40 is provided with a serpentine groove 41, and the key 40 has a longitudinal direction extending in the x direction and a height direction extending in the z direction.

During the process of inserting the correct key 40 into the key hole 11, the unlocking protrusion 31 is shifted through the snake-shaped groove 41 to drive the pendulum 30 to axially move and simultaneously circumferentially swing, and after the key 40 is inserted in place, the pendulum 30 is in the unlocking position and has a preset axial position and a preset circumferential swing angle.

The snake-shaped groove 41 comprises a snake-shaped groove bottom surface 411 and a snake-shaped groove side surface 412, the snake-shaped groove 41 comprises a plurality of sections of sub-grooves 414 along the extending direction of the snake-shaped groove, each section of sub-groove 414 is in a convex structure along the extending direction, each section of sub-groove 414 is provided with a sub-groove bottom wall 4141 acting on the unlocking protrusion 31 of the marble 30, and the plurality of sections of sub-grooves 414 jointly form a plurality of sections of grooves which are in snake-shaped bending on the xy plane.

In the process of inserting the key, the snake-shaped groove side surface 412 acts on the unlocking protrusion 31 to stir the unlocking protrusion 31 in the y direction, so as to drive the marble 30 to move in the marble hole 13 along the y direction; the serpentine groove bottom surface 411 acts on the unlocking protrusion 31 to toggle the pin 30 to swing in its circumferential direction.

Referring to FIG. 11, in some embodiments of the present application, the serpentine grooves 411 have a non-uniform height h. During the insertion of the key 40 into the key hole 11, the unlocking protrusion 31 moves along the serpentine groove 41 to move the pin 30 in the axial direction thereof, and the height of the bottom surface of the serpentine groove 41 is varied to effect the rotation of the pin 30 in the circumferential direction thereof.

Specifically, in this form of the serpentine groove 41, the sub-groove bottom wall 4141 of each segment of the sub-groove 414 is located at the top of the projection structure and parallel to the xy-plane, and the bottom surface height h of each segment of the sub-groove 414 is defined as the distance between the sub-groove bottom wall 4141 and the center plane of the key 40 in the z-direction. The height h of the bottom surface of the two adjacent sub-grooves 414 changes and acts on the bottom of the unlocking protrusion 31, so that the marble 30 is driven to swing.

Referring to fig. 12, in other embodiments, the angles β of the bottom surfaces of the serpentine grooves 41 are not uniform. During the insertion of the key 40 into the key hole 11, the unlocking protrusion 31 moves along the serpentine groove 41 to move the pin 30 in the axial direction thereof, and the protrusion angle changes through the bottom surface of the serpentine groove 41 to realize the rotation of the pin 30 in the circumferential direction thereof.

Specifically, in the serpentine groove 41 of this form, the groove bottom wall 4141 of each segment of the groove 414 is located at the front section of the protruding structure along the extending direction thereof, and the included angle between the groove bottom wall 4141 and the xy plane is defined as the protruding angle β of the bottom surface of the segment of the groove 414. The bottom surface protrusion angle β of the two adjacent sub-grooves 414 changes, and the sub-groove bottom wall 4141 of the two adjacent sub-grooves 414 acts on the bottom of the unlocking protrusion 31, so as to drive the pin 30 to swing.

Furthermore, a snake-shaped groove bulge 413 is arranged at the intersection of the two adjacent sub-grooves 414, and the snake-shaped groove bulge 413 is protruded on the bottom surface 411 of the snake-shaped groove so as to effectively shift the unlocking bulge 31.

Referring to fig. 13, the lock cylinder 100 further comprises a lock resetting member 60, wherein the lock resetting member 60 is used for driving the lock member 20 to move outward along the radial direction of the cylinder core 10 after the correct key 40 is pulled out of the key hole 11, so that one end of the lock member 20 is clamped into the lock casing and the other end is located in the lock pin slot 12.

The locking member resetting member 60 is disposed in the lock core 10 and extends along the z direction, and two ends of the locking member resetting member 60 in the radial direction of the lock core 10 are respectively abutted to the inner wall of the lock core 10 and the locking member 20 so as to drive the locking member 20 to move towards the outside of the lock core 10 along the z direction. When a keyless key is inserted into the keyhole 11, the locking member reset member 60 jacks up the locking member 20, so that both ends of the locking member 20 are inserted into the cylinder 10 and the lock case, respectively, and the cylinder 10 and the lock case are locked together.

The working principle of the lock cylinder 100 of the embodiment of the application is as follows:

during the process of inserting the correct key 40 into the keyhole 11, the key 40 acts on the unlocking protrusion 31 through the snake-shaped groove 41, so that the plurality of pins 30 are shifted to move along the axial direction and swing along the circumferential direction;

when the key 40 is inserted in position, each tumbler 30 is in its unlocking position, the insertion portion 32 of the upper portion of the tumbler 30 cooperates with a corresponding notch 211 of the first side 21 of the blocking member to allow the blocking member 20 to move towards the tumbler 30 to contact the lock of the cylinder 10;

when the key 40 is turned, the second side 22 of the locking member 20 is pressed by the inner wall of the lock case to enter the lock pin groove 12, and the cylinder 10 rotates relative to the lock case to drive the lock bolt to be pulled out, so as to realize unlocking.

Compared with lock cylinders with single-dimensional locking such as finger ball locks, each pin 30 in the lock cylinder 100 in the embodiment has locking and unlocking actions in two dimensions of the axial dimension and the circumferential dimension, and under the condition that the same number of pins are arranged, the technical unlocking difficulty of the lock cylinder 100 in the embodiment of the application is higher, and the safety is better; compared with various lock cylinders with single-dimensional marble combination, the lock cylinder 100 in the embodiment of the application uses one marble 30 to realize locking and unlocking actions which can only be realized by combining a plurality of single-dimensional marbles, and on the premise of unlocking difficulty of the same technology, the number of marbles 30 arranged in the lock cylinder 100 in the embodiment of the application is less, so that the lock cylinder is simpler in structure and easy to assemble and manufacture.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lock cylinder, comprising:

a lock case;

the lock core is rotatably arranged in the lock shell, and a key hole is formed in the lock core;

the locking piece is movably arranged between the inner wall of the lock shell and the lock cylinder and used for locking the lock cylinder;

the pin tumbler is axially movable along the pin tumbler and is circumferentially and rotatably arranged in the lock liner, and an unlocking bulge matched with a key is formed on the pin tumbler;

when a correct key is inserted into the key hole, the key can stir the pin tumbler to axially move and circumferentially rotate to an unlocking position, and when the pin tumbler is located at the unlocking position, the pin tumbler allows the locking piece to move so as to release the locking of the lock cylinder;

one side of the locking piece, which is close to the marble, is provided with a notch, an insertion part which can be inserted into the notch is formed on the marble, the insertion part extends inwards along the radial direction of the marble from the outer peripheral surface of the marble, and when the marble is positioned at the unlocking position, the insertion part is aligned with the notch.

2. The lock core according to claim 1, wherein the outer peripheral surface of the pin is formed with a groove, and the insertion portion is a protruding partition provided in the groove, the protruding partition extending in the axial direction of the pin.

3. The lock cylinder of claim 1, further comprising a resilient return assembly for urging the pin to return to a locked position after a proper key is removed from the keyway, the pin preventing movement of the locking member when the pin is in the locked position to lock the cylinder.

4. The lock core according to claim 3, characterized in that the elastic reset assembly comprises a first elastic reset member and a second elastic reset member, wherein the first elastic reset member is used for driving the pins to reset axially, and the second elastic reset member is used for driving the pins to reset circumferentially.

5. The lock core according to claim 4, wherein a return projection is formed on an outer peripheral surface of the pin, and the second elastic return member is connected to the return projection.

6. The lock cylinder according to claim 4, wherein a tumbler hole for accommodating the tumbler is provided in the cylinder, the tumbler hole communicates with the key hole through a communication port, the unlocking protrusion is formed on an outer peripheral surface of the tumbler, and the unlocking protrusion passes through the communication port to enter the key hole.

7. The lock cylinder according to claim 6, wherein the inner wall of the communication port has a first stop surface and a second stop surface which are oppositely arranged, and the first stop surface and the second stop surface are used for stopping the unlocking protrusion so as to limit the circumferential rotation range of the pin.

8. The lock cylinder according to claim 1, further comprising a key having a serpentine groove with a bottom surface having a non-uniform height, wherein the unlocking protrusion moves along the serpentine groove to move the pin in the axial direction thereof during insertion of the key into the key hole, and wherein the bottom surface of the serpentine groove acts on the unlocking protrusion to effect rotation of the pin in the circumferential direction thereof by a change in the height of the bottom surface of the serpentine groove.

9. The lock cylinder according to claim 1, further comprising a key having a serpentine groove with a bottom surface having a non-uniform protrusion angle, wherein the unlocking protrusion moves along the serpentine groove to move the pin in the axial direction thereof during insertion of the key into the key hole, and wherein the bottom surface of the serpentine groove acts on the unlocking protrusion to rotate the pin in the circumferential direction thereof by the change in the protrusion angle of the bottom surface of the serpentine groove.