Unlocking assembly and lock cylinder set

Abstract

According to the unlocking assembly and the lock cylinder set, the unlocking assembly comprises an inner core, an ejector rod and a key, the inner core is configured to be of a circular tubular structure, and a key hole is formed in the inner core; the ejector rod is installed in the key hole and matched with the inner core in a limiting mode, and a cavity is defined between the ejector rod and the hole wall of the key hole. The key comprises an insertion pipe which can be matched with the cavity in an inserted mode so that the insertion pipe and the inner core can be limited in the circumferential direction. Moreover, when the insertion pipe is matched with the cavity in an inserted mode, the ejector rod can push the dial wheel core to be inserted into the dial wheel under pushing of the key, and the inner core can be limited in the circumferential direction through the dial wheel core and the dial wheel. Therefore, on one hand, the inner core can be made of a circular tube, so that the processing cost can be reduced, the quality of the inner core product is improved, and the inner core product is prevented from being deformed due to external force; and on the other hand, the size of the cavity for inserting the insertion tube on the key on the inner core is small, and no enough space is provided for inserting tools used during technical unlocking, so that the lock cylinder applying the unlocking assembly can be prevented from being technically unlocked.

Description

Technical Field

[0001] The utility model belongs to the technical field related to pin tumbler padlocks, and particularly relates to an unlocking component and a lock core suit. Background Art

[0002] Currently, the keyhole of the inner core of existing pin tumbler padlocks is semi-open and flat. Furthermore, the inner core is generally made of non-ferrous metal, which is easy to cut but complex to produce. The semi-open and flat keyhole requires multiple grooving processes, resulting in high labor and material costs. In particular, the material utilization rate is low, which results in a relatively high unit cost for the existing inner core. Furthermore, the inner core is easily deformed by external forces, which affects key insertion and removal. Furthermore, the semi-open and flat keyhole has a positive and negative position, and the semi-open and flat keyhole has a larger left and right space, making it easier to move the key up and down, making it convenient for manual opening. Utility Model Content

[0003] In view of this, it is necessary to provide an unlocking assembly and a lock core set for solving the above technical problems.

[0004] An unlocking assembly, the unlocking assembly comprising:

[0005] The inner core is configured as a circular tubular structure, and a keyhole is opened on the inner core;

[0006] A push rod is installed in the keyhole and is limitedly matched with the inner core, and a cavity is formed between the push rod and the hole wall of the keyhole;

[0007] A key, comprising a cannula, the cannula being capable of being plugged into and fitted into the cavity so as to circumferentially limit the cannula and the inner core;

[0008] When the insert tube is plugged into the cavity, the push rod can push the dial core into the dial wheel under the push of the key, and enable the inner core to pass through the dial core and be circumferentially limited by the dial wheel.

[0009] It can be understood that the inner core is configured as a circular tubular structure, and a push rod is installed in the keyhole of the inner core, so that the cavity on the inner core for inserting the key tube is smaller, and there is not enough space for inserting the tool used for technical unlocking, which can prevent the lock core with the unlocking component from being opened technically; in addition, the circular tubular structural characteristics of the inner core are utilized, so that the inner core can be made of a round tube, compared with the existing non-ferrous metal production, it not only reduces the processing cost, but also improves the quality of the inner core product and prevents deformation due to external forces.

[0010] In one embodiment, the key further comprises a boss, and the key can push the push rod through the boss;

[0011] Wherein, the boss is fixedly installed in the insertion tube.

[0012] It is understandable that the key uses a boss installed in the insert tube to push the push rod, which can meet the requirements of pushing the push rod when the insert tube on the key is plugged into the cavity to meet the use requirements of unlocking.

[0013] In one embodiment, the inserting tube is provided with an inserting hole, and the inserting hole can be used for inserting the ejector rod;

[0014] Wherein, the boss is arranged at the bottom of the hole.

[0015] It can be understood that, through the above-mentioned structural setting, the unlocking component can match the depth of the socket with the length of the push rod, so that the unlocking component adds an encryption function by utilizing the principle of regular change of long and short within a certain range.

[0016] In one embodiment, a positioning pin is installed on the inner core, and the positioning pin is partially inserted into the keyhole;

[0017] A key slot is provided on the insert tube. When the insert tube is plugged into the cavity, the portion of the positioning pin located in the key hole can be inserted into the key slot to limit the circumferential position of the insert tube and the inner core.

[0018] It can be understood that the snap-fit ​​between the key slot and the positioning pin can achieve circumferential limitation between the insert tube inserted into the cavity and the inner core, which can meet the subsequent use requirements of the key to drive the inner core to rotate.

[0019] In one embodiment, a positioning pin is installed on the inner core, and the positioning pin is partially inserted into the keyhole;

[0020] Wherein, a step is formed on the push rod, and the step can abut against the portion of the positioning pin located in the keyhole to limit the push rod to the inner core.

[0021] It can be understood that the collision between the step and the positioning pin can limit the assembly position of the push rod in the inner core and prevent the push rod from escaping from the inner core.

[0022] In one embodiment, the unlocking assembly further includes an elastic member, which is sleeved on the top rod and abuts against the step;

[0023] An extension convex plate is formed in the inner core, and one end of the elastic member away from the step abuts against the extension convex plate, and the extension convex plate can limit the assembly of the dial core in the inner core.

[0024] It can be understood that, through the structural setting of the above-mentioned elastic part, the push rod can elastically push the inner core through the elastic part when pushed by the key, and achieve the purpose of driving the dial core to insert the dial wheel, so that the unlocking assembly can be suitable for a lock core set with two-way unlocking.

[0025] In one embodiment, the push rod is fixedly connected to the inner core.

[0026] It can be understood that the push rod is fixedly connected to the inner core so that when the push rod is pushed by the key, it can synchronously drive the inner core to push the push wheel core into the push wheel, so that the unlocking assembly can be suitable for a lock core set with one-way unlocking.

[0027] In one embodiment, the inner core is further provided with a plurality of pin holes, which are sequentially spaced apart along the length of the inner core and are respectively connected to the key holes;

[0028] The insert tube is provided with a plurality of key teeth, which correspond one-to-one to the plurality of ball holes. When the insert tube is plugged into the cavity, the key teeth are connected to the corresponding ball holes.

[0029] In one embodiment, the inner core and the key are both made of stainless steel tubes.

[0030] It is understandable that by utilizing the material properties of the stainless steel tube, not only can the production cost of the inner core and the key be reduced and the production efficiency be improved, but also the product quality of the inner core and the key can be improved.

[0031] The present application also seeks to protect a lock cylinder set comprising the unlocking assembly described above.

[0032] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0033] The unlocking assembly and lock core set requested for protection in this application configure the inner core into a circular tubular structure, and install a push rod in the keyhole of the inner core, so that the cavity on the inner core for inserting the key tube is smaller, and there is insufficient space for inserting tools used for technical unlocking, thereby preventing the lock core using the unlocking assembly from being opened technically; in addition, utilizing the circular tubular structural characteristics of the inner core, the inner core can be made of a round tube, which not only reduces processing costs compared to existing non-ferrous metal production, but also improves the quality of the inner core product and prevents deformation due to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of the structure of the unlocking assembly provided in this application.

[0036] Figure 2 This is a cross-sectional view of the unlocking assembly provided in this application.

[0037] Figure 3 This is a schematic diagram of the structure when the inner core and the ejector pin are assembled in this application.

[0038] Figure 4 This is a cross-sectional view of the lock cylinder set provided in this application.

[0039] Figure numerals: 100, unlocking assembly; 101, cavity; 10, inner core; 11, keyhole; 111, hole wall; 12, locating pin; 13, extended protrusion; 14, pin hole; 20, push rod; 21, step; 22, elastic member; 30, key; 31, insert; 311, key slot; 312, key tooth; 313, socket; 32, boss; 33, handle; 200, dial core; 300, dial; 310, dial hole; 400, lock core; 401, retaining ring; 410, inner hole of lock core; 420, dial slot; 430, spring hole of lock case; 510, tooth pin; 520, flat pin; 530, pin spring; 540, pin hole cover; 1000, lock core set. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] It should be noted that when an element is referred to as being “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “provided on” another element, it may be directly provided on the other element or there may be an intermediate element. When an element is considered to be “fixed to” another element, it may be directly fixed to the other element or there may be an intermediate element.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The unlocking assembly 100 of the present application is applied to a lock cylinder set 1000 of a pin tumbler padlock. Here, the lock cylinder set includes a lock cylinder and a key configured with the lock cylinder.

[0044] like Figures 1 to 3 As shown, an unlocking assembly 100 provided in one embodiment of the present application includes an inner core 10, a push rod 20, and a key 30. The inner core 10 is configured as a circular tubular structure and has a keyhole 11 formed therein. The push rod 20 is installed in the keyhole 11 and is limitedly engaged with the inner core 10. Moreover, a cavity 101 is formed between the push rod 20 and the hole wall 111 of the keyhole 11. The key 30 includes a plug 31 that can be plugged into the cavity 101 so that the plug 31 and the inner core 10 are circumferentially limited. Moreover, when the plug 31 is plugged into the cavity 101, the push rod 20 can push the push wheel core 200 to be inserted into the push wheel 300 under the push of the key 30, so that the inner core 10 can pass through the push wheel core 200 and the push wheel 300 and be circumferentially limited. In this way, the key 30 can drive the inner core 10 to rotate while driving the push wheel core 200 to drive the push wheel 300 to rotate, thereby achieving the purpose of unlocking. Here, the portion of the top rod 20 located in the keyhole 11 is circular, so that the insert tube 31 on the key 30 can also be configured as a circular tubular structure. The key 30 also includes a handle 33, which can be grasped by hand. The insert tube 31 is arranged at one end of the handle 33 and is connected to the handle 33.

[0045] It will be appreciated that configuring the inner core 10 as a circular tubular structure results in a circular keyhole 11 on the inner core 10 for inserting the upper insert 31 of the key 30. This allows the inner core 10 to be manufactured from a round tube, which, compared to existing non-ferrous metal manufacturing methods, not only reduces processing costs but also improves the quality of the inner core 10 and prevents deformation due to external forces. Furthermore, a push rod 20 is installed within the keyhole 11 of the inner core 10, which reduces the size of the cavity 101 on the inner core 10 for inserting the upper insert 31 of the key 30. This leaves insufficient space for inserting tools used for technical unlocking, thereby preventing the lock core incorporating the unlocking assembly 100 from being opened by technical means.

[0046] It should be noted that, firstly, because the inner core 10 and the insert 31 on the key 30 in the unlocking assembly 100 of the present application are both circular tubular structures, the characteristics of the circular tubular structure are utilized, so that the inner core 10 and the key 30 can be made of round tubes as raw materials, and the problem of the positive and negative properties of the inner core 10 and the key 30 during processing and manufacturing is more easily solved. Secondly, because the level of production technology of modern equipment is constantly improving, steel materials can be widely used in production, which effectively solves the limitations of raw materials and realizes the steel material of the inner core 10 and the key 30. Again, since round tubes are used to make the inner core 10 and the key 30, the inner core 10 and the key 30 can be produced by laser cutting (lathe finishing), which not only improves the production accuracy but also saves a lot of labor costs; finally, the unlocking component 100 adopts a sleeve-type structure, which not only increases the firmness but also enhances the service life of the lock core set 1000 using the unlocking component 100. Accordingly, the lock core 400 in the lock core set 1000 adopts a tube-in-tube structure as a whole, which better realizes production and assembly automation, improves the intrinsic quality and work efficiency of the entire lock core set 1000, realizes this technology, and achieves the purpose of cost saving.

[0047] like Figure 1 、 Figure 2 As shown, the inner core 10 is mounted with a locating pin 12, which is partially inserted into the keyhole 11. Accordingly, the insert tube 31 is provided with a key slot 311. When the insert tube 31 is plugged into the cavity 101, the portion of the locating pin 12 located within the keyhole 11 can snap into the key slot 311, thereby circumferentially limiting the position of the insert tube 31 and the inner core 10. In other words, the key 30 can utilize the snap fit between the key slot 311 and the locating pin 12 to achieve circumferential limitation between the insert tube 31 and the inner core 10, thereby satisfying the need for the key 30 to subsequently rotate the inner core 10. Here, the locating pin 12 is assembled to the inner core 10 in a tight fit. It should be noted that after the insert tube 31 on the key 30 is inserted into the cavity 101, the insert tube 31 can be driven to rotate while being pushed, so that the key groove 311 on the insert tube 31 can be aligned with the positioning pin 12, and finally the key groove 311 can be stuck into the positioning pin 12.

[0048] like Figure 2 As shown, in the present application, a step 21 is formed on the push rod 20. The step 21 can abut against the portion of the positioning pin 12 located within the keyhole 11 to limit the push rod 20 to the inner core 10. In other words, the push rod 20 can utilize the abutment between the step 21 and the positioning pin 12 to limit the position of the push rod 20 in the inner core 10, thereby preventing the push rod 20 from being separated from the inner core 10. It should be noted that the push rod 20 can be first inserted into the keyhole 11 of the inner core 10, and then the positioning pin 12 can be inserted into the inner core 10.

[0049] As preferably, Figure 2 As shown, the unlocking assembly 100 further includes an elastic member 22, which is mounted on the push rod 20 and abuts against the step 21. Accordingly, an extended protrusion 13 is formed within the inner core 10. The end of the elastic member 22, distal from the step 21, abuts against the extended protrusion 13. Furthermore, the extended protrusion 13 limits the assembly of the dial core 200 within the inner core 10. In other words, the push rod 20 can elastically push against the extended protrusion 13 on the inner core 10 via the elastic member 22. This allows the push rod 20 to elastically push against the inner core 10 when pushed by the key 30, thereby driving the dial core 200 into the dial 300. This makes the unlocking assembly 100 suitable for use in a two-way unlocking lock cylinder assembly 1000. Here, the elastic member 22 is configured as a spring, a rubber sleeve, or other highly elastic accessory.

[0050] It is understood that in other embodiments, the push rod 20 is fixedly connected to the inner core 10, so that when the push rod 20 is pushed by the key 30, it can synchronously drive the inner core 10 to push the thumbwheel core 200 into the thumbwheel 300. In this way, the unlocking assembly 100 can be used in a lock cylinder set with one-way unlocking. Here, the end of the push rod 20 inserted into the inner core 10 can be fixed to the inner core 10, so that the push rod 20 can rotate synchronously with the inner core 10, driving the thumbwheel core and thumbwheel to rotate, thereby achieving the purpose of unlocking.

[0051] like Figure 2 As shown, the inner core 10 is further provided with a plurality of pin holes 14, which are sequentially spaced along the length of the inner core 10 and are respectively connected to the keyhole 11. Correspondingly, the insert 31 is provided with a plurality of key teeth 312, which correspond one-to-one with the plurality of pin holes 14. When the insert 31 is plugged into the cavity 101, the key teeth 312 are connected to the corresponding pin holes 14. When the insert 31 is inserted into the cavity 101, the key teeth 312 on the insert 31 are connected to the corresponding pin holes 14 on the inner core 10. Thereafter, the key 30 can drive the inner core 10 to rotate synchronously, thus meeting the requirements of the pin padlock.

[0052] like Figure 2 As shown, the key 30 also includes a boss 32, which is fixedly mounted in the insert 31. The key 30 can push the push rod 20 through the boss 32, so that the push rod 20 can push the inner core 10 to drive the dial core 200 to insert the dial 300. This can meet the requirements of pushing the push rod 20 when the insert 31 on the key 30 is plugged into the cavity 101, thereby meeting the use requirements of unlocking. Here, the boss 32 and the insert 31 are connected as a whole.

[0053] like Figure 2As shown, the insert tube 31 is provided with a socket 313 into which the ejector pin 20 can be inserted; a boss 32 is disposed at the bottom of the socket 313. In other words, the boss 32 can at least partially block the opening at one end of the socket 313, allowing the unlocking assembly 100 to match the depth of the socket 313 with the length of the ejector pin 20. This, by utilizing the principle of regular variation of length within a certain range, adds an encryption function to the unlocking assembly 100. In other words, during the development and design of the unlocking assembly 100, different lock cylinder sets 1000 can be developed by adjusting the depth of the socket 313 on the insert tube 31 and the length of the ejector pin 20, in addition to the original design of the same pin thread.

[0054] In the present application, the inner core 10 and the key 30 are both made of stainless steel tubes. By utilizing the material properties of stainless steel tubes, not only can the production costs of the inner core 10 and the key 30 be reduced and production efficiency be improved, but also the product quality of the inner core 10 and the key 30 can be improved. It should be noted that the inner core 10 and the key 30 of the present application can also be made of copper, aluminum, zinc, and other alloys, or iron tubes with a low yield point.

[0055] like Figure 4 As shown, the present application also provides a lock core set 1000, including a thumb wheel core 200, a thumb wheel 300, a lock core 400 and the unlocking assembly 100 described above, the lock core 400 is provided with a lock core inner hole 410, a thumb wheel groove 420 and a plurality of lock shell spring holes 430, the lock core inner hole 410 is connected with the thumb wheel groove 420, and the plurality of lock shell spring holes 430 are arranged on the lock core 400 at intervals and are respectively connected with the lock core inner hole 410, and each lock shell spring hole 430 can be connected with the corresponding key tooth 312 on the key 30 through the ball hole 14 on the inner core 10, the thumb wheel 300 is partially arranged in the thumb wheel groove 420 and is rotatably connected to the lock core 400, the inner core 10 is inserted into the lock core inner hole 410, and is limited by a retaining ring 401 to prevent the inner core 10 from falling out of the lock core inner hole 410 of the lock core 400. Here, the inner hole 410 of the lock core is configured as a circular hole that matches the inner core 10. Furthermore, the lock core 400 sequentially installs a threaded pin 510, a flat pin 520, and a pin spring 530 within each lock housing spring hole 430, which is then sealed with a pin hole sealing plate 540. It should be noted that the specific structures of the dial core 200 and dial 300 of the present application can adopt existing conventional methods and will not be elaborated on here.

[0056] In summary, when assembling the lock core set 1000 of the present application, the elastic part 22 can be first put onto the push rod 20 and sent into the keyhole 11 of the inner core 10. Because the push rod 20 has a step 21, the push rod 20 cannot pop out after the positioning pin 12 is inserted into the inner core 10. In this way, it can be ensured that the tooth ball 510 falls on the push rod 20 under the elastic push of the ball spring 530, and does not fall out completely from the lock shell spring hole 430; after the inner core 10 and the push rod 20 are combined, the dial core 200 is placed in the inner core 10, and then the inner core 10 is pushed into the lock core inner hole 410 of the lock core 400. When a part of the dial core 200 enters the dial hole 310 of the dial wheel 300, it can be clamped with the snap ring 401 to prevent the entire inner core 10 from being pulled out of the lock core inner hole 410 of the lock core 400. Next, locate the corresponding thread pin 510 based on the depth and arrangement of the key thread 312 on the key 30 insert 31. Because the length of the thread pin 510 is the opposite of the depth of the key thread 312, the sum of the two lengths is the same. Once the correct thread pin 510 is located, the thread pin 510, flat pin 520, and pin spring 530 are sequentially placed into the lock case spring hole 430 of the lock core 400, and then sealed with the pin hole sealing plate 540. Insert the insert tube 31 of the key 30 into the keyhole 11 of the inner core 10 and rotate it so that the key groove 311 on the insert tube 31 is aligned with the positioning pin 12 so that the two can be smoothly connected. In turn, the key bit 312 on the insert tube 31 is aligned with the corresponding ball hole 14 on the inner core 10 as the reference position. When the bit ball 510 slides into the key bit 312 of the insert tube 31, the bit ball 510 will be flush with the surface of the insert tube 31, and then the insert tube 31 on the key 30 can rotate freely. After the key 30 is rotated under the force, the inner core 10 can rotate synchronously with the key 30 due to the snap fit between the key slot 311 and the locating pin 12; at the same time, after the push rod 20 enters the socket 313 of the insert tube 31, the push rod 20 will hit the socket 313 of the insert tube 31 until it abuts the boss 32, and under the action of the force, it pushes inward to press the dial core 200 so that it enters the dial wheel 300, and under the free rotation of the inner core 10, it finally drives the dial wheel 300 to rotate, and the dial wheel 300 rotates, thereby smoothly opening the lock with the lock core 400 and completing the entire unlocking process.

[0057] It should be noted that the unlocking assembly 100 of the present application is aimed at the replacement of the existing inner core and key materials, the production process, the locking structure and the technical innovation, the total cost and the technical opening are greatly reduced, and at the same time the performance of the product is improved. It can be used with an automatic assembly machine to achieve continuous production, thereby replacing the manual production process and further reducing the cost. In addition, the process equipment for producing the unlocking assembly 100 has low investment, low cost, high output, low energy consumption, high precision, safe production, and stable product quality. There is a lot of room for improvement in the production capacity of the unlocking assembly 100. It can be understood that the raw materials of the inner core 10, the top rod 20 and the key 30 of the present application can be selected from materials with low cutting yield points and sufficient toughness, which makes production easier and the product quality better.

[0058] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. An unlocking assembly, characterized in that: The unlocking components include: The inner core is configured as a circular tubular structure, and a keyhole is opened on the inner core; A push rod is installed in the keyhole and is limitedly matched with the inner core, and a cavity is formed between the push rod and the hole wall of the keyhole; A key, comprising a cannula, the cannula being capable of being plugged into and fitted into the cavity so as to circumferentially limit the cannula and the inner core; When the insert tube is plugged into the cavity, the push rod can push the dial core into the dial wheel under the push of the key, and enable the inner core to pass through the dial core and be circumferentially limited by the dial wheel.

2. The unlocking assembly according to claim 1, characterized in that: The key further comprises a boss, and the key can push the push rod through the boss; Wherein, the boss is fixedly installed in the insertion tube.

3. The unlocking assembly according to claim 2, characterized in that: The insert tube is provided with an insert hole, and the insert hole can be used for inserting the push rod; Wherein, the boss is arranged at the bottom of the hole.

4. The unlocking assembly according to claim 1, characterized in that: A positioning pin is installed on the inner core, and the positioning pin is partially inserted into the keyhole; A key slot is provided on the insert tube. When the insert tube is plugged into the cavity, the portion of the positioning pin located in the key hole can be inserted into the key slot to limit the circumferential position of the insert tube and the inner core.

5. The unlocking assembly according to claim 1, characterized in that: A positioning pin is installed on the inner core, and the positioning pin is partially inserted into the keyhole; Wherein, a step is formed on the push rod, and the step can abut against the portion of the positioning pin located in the keyhole to limit the push rod to the inner core.

6. The unlocking assembly according to claim 5, characterized in that: The unlocking assembly further includes an elastic member, which is sleeved on the top rod and abuts against the step; An extension convex plate is formed in the inner core, and one end of the elastic member away from the step abuts against the extension convex plate, and the extension convex plate can limit the assembly of the dial core in the inner core.

7. The unlocking assembly according to claim 1, characterized in that: The ejector pin is fixedly connected to the inner core.

8. The unlocking assembly according to claim 1, characterized in that: The inner core is also provided with a plurality of pin holes, which are sequentially spaced along the length of the inner core and are respectively connected to the key holes; The insert tube is provided with a plurality of key teeth, which correspond one-to-one to the plurality of ball holes. When the insert tube is plugged into the cavity, the key teeth are connected to the corresponding ball holes.

9. The unlocking assembly according to claim 1, characterized in that: The inner core and the key are both made of stainless steel tubes.

10. A lock cylinder set, characterized in that: The unlocking assembly comprises the unlocking assembly according to any one of claims 1 to 9.

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