Combined multi-anti-theft pin tumbler lock

Abstract

The utility model discloses a combined type multiple anti-theft pin tumbler lock which comprises a lock cylinder, an inner cavity of the lock cylinder is movably connected with a lock bolt used in cooperation with a key, one end of the lock cylinder is provided with an interlocking crank arm used in cooperation with a spring bolt, and a clutch assembly used for linkage is arranged between the lock bolt and the interlocking crank arm. The lock cylinder is provided with a reset assembly used for automatically resetting and positioning local parts of the clutch assembly. According to the anti-theft lock, the lock cylinder and the lock bolt are matched to achieve primary anti-theft, the lock bolt, the interlocking crank arm and the clutch assembly are matched to achieve secondary anti-theft, the clutch assembly and the reset assembly are matched to achieve triple anti-theft, and then the multiple anti-theft effect is achieved; and meanwhile, the reset assembly is used for resetting the adsorption sleeve without using a spring, so that the phenomenon that the clutch assembly fails due to failure of the spring is effectively avoided, and the anti-theft effect of the pin tumbler lock is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-theft locks, in particular to a combined multiple anti-theft pin lock. Background Art

[0002] Anti-theft locks are divided into pin locks, blade locks, magnetic locks, smart card door locks, fingerprint locks, etc. according to the principles of the lock core. Among them, the most common on the market is the pin lock, such as the straight lock, cross lock, computer lock, etc., are all pin locks.

[0003] The existing patent document with publication number CN107700951B discloses an anti-theft pin lock, in which the first polygonal axis and the second polygonal axis are disconnected and connected by sliding of a sliding sleeve. The lock can be unlocked only when the sliding sleeve reliably connects the first polygonal axis and the second polygonal axis when the key is inserted. Otherwise, even if the pin lock is cracked, it can only run idle. During the idling process of the pin lock, even if the sliding sleeve is transmission-connected to the first polygonal axis and the second polygonal axis, the angle travel specified for unlocking cannot be completed due to the rotation angle limitation, and the lock still cannot be unlocked, thereby greatly increasing the difficulty of unlocking and making it difficult to be cracked and unlocked.

[0004] Although the above-mentioned anti-theft pin tumbler lock can solve the corresponding technical problems, the sliding sleeve and the housing are reset by a spring. However, the spring may be deformed, its elastic force value may change, or its length may change after long-term use or due to environmental problems, which may make it difficult for the sliding sleeve to reset or even directly sleeved on the first polygonal shaft and the second polygonal shaft, thereby reducing the effect of the clutch mechanism and making it difficult to achieve the anti-theft purpose. Therefore, we propose a combined multiple anti-theft pin tumbler lock. Utility Model Content

[0005] The purpose of the utility model is to provide a combined multi-anti-theft pin lock to solve the problem that the anti-theft pin lock in the above-mentioned background technology realizes the resetting effect between the sliding sleeve and the shell through a spring, but the spring is deformed, the elastic force value changes or the length changes after long-term use or due to environmental problems, which makes it difficult for the sliding sleeve to be reset or even directly sleeved on the first polygonal shaft and the second polygonal shaft, thereby reducing the effect of the clutch mechanism and making it difficult to achieve the anti-theft purpose.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A combined multi-anti-theft pin lock comprises a lock cylinder, the inner cavity of which is movably connected to a lock bolt used in conjunction with a key, one end of the lock cylinder is provided with an interlocking crank arm used in conjunction with a lock tongue, a clutch assembly for linkage is provided between the lock bolt and the interlocking crank arm, and a reset assembly for automatically resetting and positioning a local component of the clutch assembly is provided on the lock cylinder;

[0008] The reset assembly includes an electromagnet fixedly connected to one end of the lock bolt near the clutch assembly, the outer surface of the electromagnet is slidably connected to the inner wall of the lock cylinder, a rangefinder is embedded in the lock cylinder, and a detection hole adapted to the rangefinder is opened on the lock bolt;

[0009] Wherein, the reset component also includes a controller, and the electromagnet and the rangefinder are both electrically connected to the controller.

[0010] Preferably, the detection hole and the elastic groove on the lock bolt are in the same straight line.

[0011] Preferably, the interlocking crank arm comprises a shell mounted on one end of the lock cylinder, a movable column is rotatably connected to the shell, and one end of the movable column is fixedly connected to the crank arm body.

[0012] Preferably, the clutch assembly includes a support fixedly connected to one end of the locking bolt, the surface movable sleeve of the support is provided with an adsorption sleeve, the adsorption sleeve is adsorbed to one side of the electromagnet by magnetic force, the end of the movable column close to the support is fixedly connected with a protrusion, and the interior of the adsorption sleeve is provided with an inner hole adapted to the protrusion.

[0013] Preferably, two pins are threadedly connected to the adsorption sleeve, and a sliding hole for the pins to slide is provided on the surface of the support, wherein one end of one of the pins penetrates into the inner cavity of the support.

[0014] Preferably, the protrusion and the inner hole are both regular hexagonal or other regular polygonal structures.

[0015] Preferably, the movable distance of the pin in the inner cavity of the support is greater than the distance between the adsorption sleeve and the protrusion.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: when the present application is in use, single-layer anti-theft can be achieved through the cooperation of the lock cylinder and the lock bolt, double-layer anti-theft can be achieved through the cooperation of the lock bolt, the interlocking crank arm and the clutch assembly, and triple-layer anti-theft can be achieved through the cooperation of the clutch assembly and the reset assembly, thereby achieving multiple anti-theft effects; at the same time, the reset assembly is used to make it possible to reset the adsorption sleeve without the use of a spring, effectively avoiding the phenomenon of failure of the clutch assembly due to failure of the spring, thereby improving the anti-theft effect of the pin lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a combined multi-anti-theft pin lock of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of a partial structure of a combined multi-anti-theft pin lock of the utility model in a locked state;

[0019] Figure 3 The utility model is a three-dimensional schematic diagram of the partial structure of a combined multi-anti-theft pin lock in an unlocked state.

[0020] In the figure: 1, lock cylinder; 2, lock bolt; 3, interlocking crank arm; 31, shell; 32, movable column; 33, crank arm body; 4, clutch assembly; 41, support; 42, adsorption sleeve; 421, inner hole; 43, pin; 44, sliding hole; 45, bump; 5, reset assembly; 51, electromagnet; 52, rangefinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-3 , a combined multi-anti-theft pin lock, comprising a lock cylinder 1, a lock bolt 2 used in conjunction with a key, an interlocking crank arm 3 used in conjunction with a lock tongue, a clutch assembly 4 for interlocking the lock bolt 2 and the interlocking crank arm 3, and a reset assembly 5 for automatically resetting and positioning local components of the clutch assembly 4, the lock bolt 2 is movably connected to the inner cavity of the lock cylinder 1, the interlocking crank arm 3 is arranged at one end of the lock cylinder 1, the clutch assembly 4 is arranged between the lock bolt 2 and the interlocking crank arm 3, the clutch assembly 4 is located in the inner cavity of the lock cylinder 1, and the reset assembly 5 is arranged on the lock cylinder 1; the reset assembly 5 includes an electromagnet 51 fixedly connected to one end of the lock bolt 2 close to the clutch assembly 4, the outer surface of the electromagnet 51 is slidably connected to the inner wall surface of the lock cylinder 1, a rangefinder 52 is embedded in the interior of the lock cylinder 1, and a detection hole compatible with the rangefinder 52 is opened on the lock bolt 2; the reset assembly 5 also includes a controller not shown in the figure, and the electromagnet 51 and the rangefinder 52 are both electrically connected to the controller.

[0024] Among them, the controller can adopt a PLC controller of the Siemens s7-300 series. The controller is used to adjust the working state or parameters of the electromagnet 51 and the rangefinder 52. The rangefinder 52 is used to detect the distance from the end of the key and transmit the distance data to the controller. The controller receives the distance data and controls the electromagnet 51 to cut off the power and release the adsorption sleeve 42, so that the key end can push the adsorption sleeve 42 to move toward the interlocking arm 3.

[0025] The rangefinder 52 may be a micro-rangefinder disclosed in the existing publication number CN211527325U, which can conveniently measure objects with a planar or three-dimensional shape.

[0026] Working principle: When the correct key is inserted into the keyhole of the lock bolt 2, the end of the key first passes through the detection hole, and the distance to the end of the key is detected by the reset component 5, and the distance data is transmitted to the controller. The controller receives the distance data and controls the electromagnet 51 to cut off the power and release the adsorption sleeve 42. At the same time, the end of the key continues to move toward the inner cavity of the support 41, so that the end of the key pushes the corresponding pin 43, and the pin 43 drives the adsorption sleeve 42 to slide on the surface of the support 41, and the pin 43 slides in the inner cavity of the sliding hole 44 until the adsorption sleeve 42 is sleeved on the surface of the protrusion 45. At this time, the key can be turned, so that the key drives the lock bolt 2, the clutch component 4 and the interlocking crank arm 3 to rotate, and the unlocking operation can be completed; when the key is pulled out, the reset component 5 detects the distance to the inner wall of the lock bolt 2, and transmits the distance data to the controller. The controller receives the distance data and controls the electromagnet 51 to be energized, so that the adsorption sleeve 42 is adsorbed to one side of the electromagnet 51 by magnetic force, and the locking operation can be completed.

[0027] Beneficial effect: single-layer anti-theft can be achieved through the cooperation of the lock cylinder 1 and the lock bolt 2, double-layer anti-theft can be achieved through the cooperation of the lock bolt 2, the interlocking crank arm 3 and the clutch assembly 4, and triple-layer anti-theft can be achieved through the cooperation of the clutch assembly 4 and the reset assembly 5, thereby achieving multiple anti-theft effects; at the same time, the reset assembly 5 makes it possible to reset the adsorption sleeve 42 without the use of a spring, effectively avoiding the failure of the clutch assembly 4 due to the failure of the spring, thereby improving the anti-theft effect of the pin lock.

[0028] Example 2

[0029] See also Figure 1-3 The combined multi-anti-theft pin lock provided in this embodiment is different from that in Embodiment 1 in that:

[0030] The detection hole and the spring groove on the lock bolt 2 are in the same straight line.

[0031] The interlocking crank arm 3 comprises a housing 31 mounted on one end of the lock cylinder 1 , a movable column 32 is rotatably connected to the housing 31 , and a crank arm body 33 is fixedly connected to one end of the movable column 32 .

[0032] The clutch assembly 4 includes a support 41 fixedly connected to one end of the lock bolt 2, and a movable sleeve 42 is provided on the surface of the support 41. The adsorption sleeve 42 is adsorbed to one side of the electromagnet 51 through magnetic force. The movable column 32 is fixedly connected to one end of the support 41 with a protrusion 45, and the interior of the adsorption sleeve 42 is provided with an inner hole 421 adapted to the protrusion 45. According to the above design, when the electromagnet 51 is energized, the adsorption sleeve 42 can be adsorbed to one side of the electromagnet 51 through magnetic force. When the electromagnet 51 is powered off, the electromagnet 51 loses its magnetism and the connection with the adsorption sleeve 42 can be disconnected, so that the adsorption sleeve 42 can slide on the surface of the support 41 under the action of external force.

[0033] Two pins 43 are threadedly connected to the adsorption sleeve 42, and a sliding hole 44 is provided on the surface of the support 41 for the pins 43 to slide. One end of one of the pins 43 penetrates into the inner cavity of the support 41. The above design, through the coordinated use of the pins 43 and the sliding hole 44, can guide the adsorption sleeve 42, so that the adsorption sleeve 42 can be stably moved along the center direction of the adsorption sleeve 42, and at the same time, the pin 43 extending to the inner cavity of the support 41 can be used by a key to push the adsorption sleeve 42 to move.

[0034] The protrusion 45 and the inner hole 421 are both in the shape of a regular hexagon or other regular polygon. The above design enables the protrusion 45 to rotate when the adsorption sleeve 42 moves and sleeves onto the surface of the protrusion 45 .

[0035] The movable distance of the pin 43 in the inner cavity of the support 41 is greater than the distance between the adsorption sleeve 42 and the protrusion 45 . The above design can ensure that the adsorption sleeve 42 can slide normally and be sleeved on the surface of the protrusion 45 .

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined multi-anti-theft pin lock, characterized in that: It comprises a lock cylinder, whose inner cavity is movably connected with a lock bolt used in conjunction with a key, one end of the lock cylinder is provided with an interlocking crank arm used in conjunction with a lock tongue, a clutch assembly for linkage is provided between the lock bolt and the interlocking crank arm, and a reset assembly for automatically resetting and positioning a local component of the clutch assembly is provided on the lock cylinder, wherein: The reset assembly includes an electromagnet fixedly connected to one end of the lock bolt near the clutch assembly, the outer surface of the electromagnet is slidably connected to the inner wall of the lock cylinder, a rangefinder is embedded in the lock cylinder, and a detection hole adapted to the rangefinder is opened on the lock bolt; The reset component also includes a controller, and the electromagnet and the rangefinder are both electrically connected to the controller.

2. A combined multi-anti-theft pin lock according to claim 1, characterized in that: The detection hole and the elastic groove on the lock bolt are in the same straight line.

3. A combined multi-anti-theft pin lock according to claim 1, characterized in that: The interlocking crank arm comprises a shell installed at one end of a lock cylinder, a movable column is rotatably connected to the shell, and one end of the movable column is fixedly connected to a crank arm body.

4. A combined multi-anti-theft pin lock according to claim 3, characterized in that: The clutch assembly includes a support fixedly connected to one end of the lock bolt, a surface movable sleeve of the support is provided with an adsorption sleeve, the adsorption sleeve is adsorbed to one side of the electromagnet by magnetic force, a protrusion is fixedly connected to one end of the movable column close to the support, and an inner hole matching the protrusion is opened inside the adsorption sleeve.

5. A combined multi-anti-theft pin lock according to claim 4, characterized in that: The adsorption sleeve is threadedly connected with two pins, and the surface of the support is provided with sliding holes for the pins to slide, wherein one end of one of the pins penetrates into the inner cavity of the support.

6. A combined multi-anti-theft pin lock according to claim 4, characterized in that: The convex block and the inner hole are both regular hexagonal.

7. A combined multi-anti-theft pin lock according to claim 5, characterized in that: The movable distance of the pin in the inner cavity of the support is greater than the distance between the adsorption sleeve and the protrusion.

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