A lock core

Abstract

The present invention provides a lock core, comprising a housing, a front lock shell, a rear lock shell, a front pin, a rear pin, a spring, a connecting shaft and a lock core paddle; the rear lock shell is provided with a plurality of rear lock holes, the rear lock holes are blind holes extending in the axial direction, and the opening of the rear lock holes is located at the front end surface of the rear lock shell; a spring and a rear pin are arranged in each rear lock hole; the front lock shell is provided with a plurality of front lock holes, and the number and position of the front lock holes correspond to the rear lock holes in one to one; the front lock holes are through holes penetrating in the axial direction, and a front pin is arranged in each front lock hole; the front pin can be axially movably installed in the front lock hole through an axial displacement adjustment structure; the rear end of the front pin is against the front end of the rear pin, and the length of each front pin is different. The lock core provided by the present invention has the characteristics of compact structure, convenient use and high safety, and can be widely used in the improvement of various locks.

Description

Technical Field

[0001] The invention relates to the field of locks, and in particular to a lock core. Background Art

[0002] The lock core is the main part that controls the opening of the lock and is the heart of the lock. The lock can be unlocked by turning the lock core and driving the lock tongue of the lock body.

[0003] At present, with the development of science and technology, smart locks have been used more and more widely. Although smart locks use electronic unlocking methods such as fingerprint recognition or password recognition most of the time, they also have built-in mechanical lock cylinders as a backup emergency door opening method when an unexpected situation occurs and the lock cannot be unlocked.

[0004] Most of the existing lock cores on the market use a single-row or double-row pin or blade combination structure, with the pins arranged in sequence along the length direction. The more pins there are, the longer the lock core is. Therefore, the core length of the lock core determines the security, but the length also affects the appearance and structure of the lock, especially the smart lock. The longer the lock core, the thicker the smart lock needs to be designed, which greatly limits the appearance and structure of the smart lock.

[0005] In addition, for smart locks, the lock core is only a backup emergency door opening method and is not used frequently. As a result, keys that have not been used for a long time are easily forgotten or lost by users, making the lock core unable to function at critical moments.

[0006] Therefore, designing a lock core that does not require a key, is shorter in length, can be unlocked safely and is easy to use becomes a top priority. Summary of the invention

[0007] The purpose of the present invention is to provide a lock core with a shorter length and can be flexibly used in smart locks to address the problems in the prior art.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A lock core comprises a housing, a front lock housing, a rear lock housing, a front pin, a rear pin, a spring, a connecting shaft and a lock core paddle;

[0010] The front lock housing and the rear lock housing are cylindrical, the front lock housing and the rear lock housing are hollow at the axis, and the rear end surface of the front lock housing fits with the front end surface of the rear lock housing; the front end of the connecting shaft passes through the axis of the rear lock housing and the front lock housing in sequence, the front end of the connecting shaft is provided with a rotating operation structure for rotating the connecting shaft, and the rear end of the connecting shaft is fixedly connected to the lock core paddle;

[0011] The outer shell is sleeved on the outside of the front lock shell and the rear lock shell; one of the front lock shell and the rear lock shell is fixedly connected to the connecting shaft, and the other is fixedly connected to the outer shell;

[0012] The rear lock housing is provided with a plurality of rear lock holes, which are blind holes extending in the axial direction, and the openings of the rear lock holes are located at the front end surface of the rear lock housing; a spring and a rear pin are arranged in each rear lock hole, and the two ends of the spring are respectively against the bottom surface of the rear lock hole and the rear end of the rear pin, so that the front end of the rear pin can be elastically and telescopically arranged at the opening of the rear lock hole;

[0013] The front lock housing is provided with a plurality of front lock holes, and the number and position of the front lock holes correspond to the rear lock holes one by one; the front lock holes are through holes which penetrate axially, and a front pin is arranged in each front lock hole; the front pin can be axially movably installed in the front lock hole through an axial displacement adjustment structure; the rear end of the front pin abuts against the front end of the rear pin, and the length of each front pin is different.

[0014] Furthermore, the axial displacement adjustment structure includes an internal thread arranged on the inner wall of the front lock hole, an external thread arranged on the side of the front pin, and a rotating operating structure arranged at the front end of the front pin; the front pin is threadedly connected to the front lock hole and rotated through the rotating operating structure to move axially in the front lock hole.

[0015] Furthermore, an internal thread is provided on the inner wall of the rear lock hole, which is used to be threadedly connected with the rear end of the front pin when the rear end of the front pin moves into the rear lock hole.

[0016] Furthermore, the rotation operation structure on the connecting shaft and the front pin is a hexagonal screw groove arranged on the front end surface of the connecting shaft and the front pin.

[0017] Furthermore, the front lock housing is fixedly connected to the connecting shaft, and the rear lock housing is fixedly connected to the outer shell.

[0018] Furthermore, the rear lock housing is fixedly connected to the connecting shaft, and the front lock housing is fixedly connected to the outer shell.

[0019] Furthermore, there are 6 front lock holes and 6 rear lock holes; the 6 front lock holes are evenly distributed with the axis of the front lock shell as the center, and the 6 rear lock holes are evenly distributed with the axis of the rear lock shell as the center.

[0020] Furthermore, it also includes a limiting panel, which is fixed to the front end surface of the front lock shell. A plurality of limiting holes are arranged on the end surface of the limiting panel. The number and position of the limiting holes correspond one-to-one to the front lock hole, and the diameter of the limiting hole is smaller than the front lock hole.

[0021] Furthermore, the front end surface of the front pin is provided with an inner indicating scale line, and the limiting hole of the limiting panel is provided with a corresponding outer indicating scale line.

[0022] Furthermore, the axis of the front pin is hollow.

[0023] The lock core provided by the present invention greatly reduces the length of the lock core by changing the arrangement of the pins; it frees the length limit when designing the smart lock, making the style of the smart lock more diverse and the structure more flexible. The lock core of the present invention can be unlocked using common tools in daily life, avoiding the embarrassment of forgetting to bring keys; at the same time, by changing the number of lock holes and the length of the pins, the unlocking combinations become infinite, with higher security. The lock core provided by the present invention has the characteristics of compact structure, easy use and high security, and can be widely used in the improvement of various locks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall appearance diagram of a lock core provided in Embodiment 1 of the present invention.

[0025] Figure 2 It is an exploded view of a lock core provided in Embodiment 1 of the present invention.

[0026] Figure 3 It is a side exploded view of a lock core provided in Embodiment 1 of the present invention.

[0027] Figure 4 This is an overall appearance diagram of a lock core provided in Embodiment 2 of the present invention.

[0028] Figure 5 It is an exploded view of a lock core provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] like Figures 1 to 3 As shown, a lock core provided by an embodiment of the present invention includes a housing 1, a front lock housing 2, a rear lock housing 3, a front pin 21, a rear pin 31, a spring 32, a connecting shaft 4 and a lock core paddle 5.

[0032] The front lock housing 2 and the rear lock housing 3 are cylindrical, the axis of the front lock housing 2 and the rear lock housing 3 are hollow, and the rear end face of the front lock housing 2 fits the front end face of the rear lock housing 3; the front end of the connecting shaft 4 passes through the axis of the rear lock housing 3 and the front lock housing 2 in sequence, and the front end of the connecting shaft 4 is provided with a rotating operation structure for rotating the connecting shaft 4, and the rear end of the connecting shaft 4 is fixedly connected to the lock core paddle 5. By rotating the connecting shaft 4 through the rotating operation structure, the lock core paddle 5 can be controlled to unlock.

[0033] Furthermore, the housing 1 is sleeved outside the front lock housing 2 and the rear lock housing 3 to axially fix the front lock housing 2 and the rear lock housing 3. One of the front lock housing 2 and the rear lock housing 3 is fixedly connected to the connecting shaft 4, and the other is fixedly connected to the housing 1; this makes it possible for the connecting shaft 4 to rotate and then unlock the lock through the lock core paddle 5 only when the front lock housing 2 and the rear lock housing 3 can rotate relative to each other. In this embodiment, the front lock housing 2 is fixedly connected to the connecting shaft 4, and the rear lock housing 3 is fixedly connected to the housing 1.

[0034] Furthermore, the rear lock housing 3 is provided with 6 rear lock holes 30, and the 6 rear lock holes 30 are evenly distributed around the axis of the rear lock housing 3. The rear lock holes 30 are blind holes extending in the axial direction, and the openings of the rear lock holes 30 are located at the front end surface of the rear lock housing 3; a spring 32 and a rear pin 31 are arranged in each rear lock hole 30, and the two ends of the spring 32 are respectively against the bottom surface of the rear lock hole 30 and the rear end of the rear pin 31, so that the front end of the rear pin 31 can be elastically and telescopically arranged at the opening of the rear lock hole 30.

[0035] The front lock housing 2 is provided with 6 front lock holes 20, and the 6 front lock holes 20 are evenly distributed with the axis of the front lock housing 2 as the center. The number and position of the front lock holes 20 and the rear lock holes 30 correspond one to one; the front lock holes 20 are through holes that penetrate along the axial direction, and a front pin 21 is arranged in each front lock hole 20; the front pin 21 can be axially movably installed in the front lock hole 20 through the axial displacement adjustment structure; the rear end of the front pin 21 abuts against the front end of the rear pin 31, and the length of each front pin 21 is different, so that in the initial state, the contact surface of each group of front pins 21 and the rear pin 32 is located in different planes.

[0036] Specifically, in the initial state, the contact surfaces of some front pins 21 and rear pins 31 are located in the front lock hole 20, the contact surfaces of some front pins 21 and rear pins 31 are located in the rear lock hole 30, and the contact surfaces of some front pins 21 and rear pins 31 may be located at the junction of the front lock hole 20 and the rear lock hole 30. At this time, the front pins 21 and the rear pins 31 are blocked at the junction of the front lock housing 2 and the rear lock housing 3, and the front lock housing 2 and the rear lock housing 3 cannot rotate relative to each other, which also makes the connecting shaft 4 unable to rotate, and the lock core paddle 5 cannot be used to perform the unlocking action. Only when the axial position of the front pins 21 is adjusted by the axial displacement adjustment structure so that the contact surfaces of all the front pins 21 and the rear pins 31 are located at the junction of the front lock hole 2 and the rear lock hole 3, the front lock housing 2 and the rear lock housing 3 can be relatively rotated, thereby making the connecting shaft 4 able to rotate, so as to perform the unlocking action through the lock core paddle 5.

[0037] When the contact surfaces of all the front pins 21 and the rear pins 31 are located at the junction of the front lock hole 2 and the rear lock hole 3, the distance each front pin 21 has moved axially relative to the initial state is the information required for unlocking. By designing the axial displacement adjustment structure, the axial movement distance of the front pin 21 can be quantified and controllable, so as to facilitate the unlocking operation.

[0038] In this embodiment, the axial displacement adjustment structure includes an internal thread provided on the inner wall of the front lock hole 20, an external thread provided on the side of the front pin 21, and a rotation operation structure provided on the front end of the front pin 21; the front pin 21 is threadedly connected to the front lock hole 20, and rotated by the rotation operation structure to move axially in the front lock hole 20. Furthermore, an internal thread is provided on the inner wall of the rear lock hole 30, which is used to be threadedly connected with the rear end of the front pin 21 when the rear end of the front pin 21 moves into the rear lock hole 30. According to the above structure, by controlling the angle and number of revolutions of the front pin 21, the axial movement distance of the front pin 21 can be controlled to achieve quantitative control.

[0039] In addition to the threaded connection structure used in this embodiment, in other embodiments of the present invention, various other feasible axial displacement adjustment structures may be used, such as a gear-type telescopic mechanism, a damping telescopic mechanism, and a press-type automatic locking mechanism similar to the tail of an automatic ballpoint pen, etc., which are not listed here one by one.

[0040] Correspondingly, the rotary operation structure on the connecting shaft 4 and the front pin 21 also has a variety of feasible implementation methods, such as various knobs, screw grooves, rotating handles, etc., and even a radially penetrating hole can be set at the front end of the connecting shaft 4 and the front pin 21, and a rotation operation can be performed by inserting a pin into the hole. The above structures should all be included in the protection scope of the patent of this invention. In this embodiment, the rotary operation structure on the connecting shaft 4 and the front pin 21 adopts a hexagonal screw groove set on the front end surface of the connecting shaft 4 and the front pin 21; a complete unlocking operation can be performed by using a hexagonal wrench commonly used in daily life.

[0041] As an improvement, the lock core provided in this embodiment further includes a limit panel 10, and the limit panel 10 is fixed to the front end face of the front lock housing 2. Specifically, the limit panel 10 is in the shape of a sleeve, the side of the limit panel 10 is sleeved and fixed to the side of the front lock housing 2, and the end face of the limit panel 10 is connected to the front end face of the front lock housing 2. A plurality of limit holes 11 are provided on the end face of the limit panel 10, the number and position of the limit holes 11 correspond to the front lock hole 20 one by one, and the diameter of the limit hole 11 is smaller than the front lock hole 20.

[0042] The limiting panel 11 is used to assist in marking the initial position of each front pin 21. Since the diameter of the limiting hole 11 is smaller than the front lock hole 20, when the front pin 21 moves outward to the front end of the front lock hole 20, it will be blocked by the limiting panel 10 and cannot move outward any further, thereby limiting the initial position of the front pin 21.

[0043] Furthermore, the front end surface of the front pin 21 is provided with an inner indicating scale line, and the limiting hole 11 of the limiting panel 10 is provided with a corresponding outer indicating scale line. The inner indicating scale line and the outer indicating scale line can indicate the rotation angle of the front pin 21 in units of circles. If the limiting effect of the limiting panel 10 is not sufficient to accurately mark the initial position, the inner indicating scale line and the outer indicating scale line can also be used for auxiliary positioning. When the front pin 21 is against the limiting panel 10, and the inner indicating scale line and the outer indicating scale line are opposite, it can be determined that the front pin 21 is at the initial position.

[0044] After unlocking is completed, the purpose of restoring the front pin 21 to the initial position is to facilitate the next unlocking. Only when it is in the initial position can the user have a clear reference standard to determine how many turns and how many angles each front pin 21 needs to rotate to reach the unlocking state.

[0045] Of course, the reverse deduction method can also be used, where the user can freely shuffle the position of each front pin 21 in the unlocked state, and the lock cylinder is locked again after the front pin 21 moves. As long as the user can remember the shuffled information, he can unlock the door again by reverse operation in the future. In this case, there is no need to mark the initial position, and the user can perform personalized settings.

[0046] The use process of a lock core provided by an embodiment of the present invention is as follows:

[0047] When unlocking, according to the initial state information of the lock core, use a hexagonal wrench to rotate each front pin 21 by a specific number of circles and angles, so that the contact surfaces of all the front pins 21 and the rear pins 31 are located at the junction of the front lock hole 20 and the rear lock hole 30. Then, the connecting shaft 4 can be rotated with a hexagonal wrench, and then the lock can be unlocked through the lock core paddle 5.

[0048] After unlocking, the connecting shaft 4 is rotated back to the initial position, so that the front lock hole 20 and the rear lock hole 30 are restored to a state of one-to-one alignment. Then, each front pin 21 is rotated to the initial position using a hexagonal wrench to achieve locking.

[0049] Embodiment 2

[0050] like Figure 4 and Figure 5As shown, this embodiment is further improved on the basis of the first embodiment. Specifically, the axis of the front pin 21 in this embodiment is hollow. Through this structure, another unlocking method is added. By inserting a stick-shaped object at the axis of each front pin 21, the rear pin 31 can be pushed to move backward. When the rear pin 31 is retracted into the rear lock hole 30, the front lock shell 2 and the rear lock shell 3 can rotate relative to each other to achieve unlocking, thereby increasing the diversity of unlocking methods. Based on this principle, an object with multiple protruding stick-shaped objects can be prefabricated as a "key". The length of each stick-shaped object matches the axial length of the front lock shell 2, so that when the stick-shaped object is fully inserted from the axis of the front pin 21, each rear pin 31 can be pushed into the rear lock hole 30 to achieve unlocking.

[0051] Other structural details of this embodiment are consistent with those of the first embodiment and are not described in detail here.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A lock core, characterized in that: It includes a housing, a front lock housing, a rear lock housing, a front pin, a rear pin, a spring, a connecting shaft and a lock core paddle; The front lock housing and the rear lock housing are cylindrical, the front lock housing and the rear lock housing are hollow at the axis, and the rear end surface of the front lock housing fits with the front end surface of the rear lock housing; the front end of the connecting shaft passes through the axis of the rear lock housing and the front lock housing in sequence, the front end of the connecting shaft is provided with a rotating operation structure for rotating the connecting shaft, and the rear end of the connecting shaft is fixedly connected to the lock core paddle; The outer shell is sleeved on the outside of the front lock shell and the rear lock shell; one of the front lock shell and the rear lock shell is fixedly connected to the connecting shaft, and the other is fixedly connected to the outer shell; The rear lock housing is provided with a plurality of rear lock holes, which are blind holes extending in the axial direction, and the openings of the rear lock holes are located at the front end surface of the rear lock housing; a spring and a rear pin are arranged in each rear lock hole, and the two ends of the spring are respectively against the bottom surface of the rear lock hole and the rear end of the rear pin, so that the front end of the rear pin can be elastically and telescopically arranged at the opening of the rear lock hole; The front lock housing is provided with a plurality of front lock holes, and the number and position of the front lock holes correspond to the rear lock holes one by one; the front lock holes are through holes which penetrate axially, and a front pin is arranged in each front lock hole; the front pin can be axially movably installed in the front lock hole through an axial displacement adjustment structure; the rear end of the front pin abuts against the front end of the rear pin, and the length of each front pin is different.

2. The lock core according to claim 1, characterized in that: The axial displacement adjustment structure includes an internal thread arranged on the inner wall of the front lock hole, an external thread arranged on the side of the front pin, and a rotating operating structure arranged on the front end of the front pin; the front pin is threadedly connected to the front lock hole and rotated by the rotating operating structure to move axially in the front lock hole.

3. The lock core according to claim 2, characterized in that: An inner thread is provided on the inner wall of the rear lock hole, which is used for being threadedly connected with the rear end of the front pin when the rear end of the front pin moves into the rear lock hole.

4. The lock core according to claim 2, characterized in that: The rotation operation structure on the connecting shaft and the front pin is a hexagonal screw groove arranged on the front end surface of the connecting shaft and the front pin.

5. The lock core according to claim 1, characterized in that: The front lock housing is fixedly connected to the connecting shaft, and the rear lock housing is fixedly connected to the outer shell.

6. The lock core according to claim 1, characterized in that: The rear lock housing is fixedly connected to the connecting shaft, and the front lock housing is fixedly connected to the outer shell.

7. The lock core according to claim 1, characterized in that: There are 6 front lock holes and 6 rear lock holes; the 6 front lock holes are evenly distributed with the axis of the front lock shell as the center, and the 6 rear lock holes are evenly distributed with the axis of the rear lock shell as the center.

8. The lock core according to claim 2, characterized in that: It also includes a limiting panel, which is fixed to the front end surface of the front lock shell. A plurality of limiting holes are arranged on the end surface of the limiting panel. The number and position of the limiting holes correspond to the front lock holes one by one, and the diameter of the limiting holes is smaller than the front lock holes.

9. The lock core according to claim 8, characterized in that: The front end surface of the front pin is provided with an inner indicating scale line, and the limiting hole of the limiting panel is provided with a corresponding outer indicating scale line.

10. The lock core according to claim 1, characterized in that: The axis center of the front pin is hollow.

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