A freeze resistant lock cylinder

Abstract

The utility model discloses a kind of anti-freezing lock cylinder, including the inner lock cylinder and outer lock cylinder being arranged in lock shell lock cylinder hole, inner lock cylinder and outer lock cylinder between being equipped with sand iron, sand iron is sleeved with former inner rotating part and rear inner rotating part;Keyhole of inner lock cylinder and outer lock cylinder is all provided with key guide slot;Former inner rotating part is formed with bayonet hole, and double-insurance bayonet assembly is equipped in bayonet hole;Sand iron is respectively equipped with upper bayonet slot pit and lower bayonet slot pit in the position corresponding to bayonet hole, when double-insurance bayonet assembly is ejected, and is inserted;Outer lock cylinder is formed with stop bead hole in the end of key guide slot, and stop bead hole is equipped with stop bead for preventing needle along key guide slot continue to insert in outer lock cylinder.The utility model is simple in structure, safe and reliable, and has the multiple anti-theft functions of anti-drilling, anti-violence and anti-liquid injection.

Description

Technical Field

[0001] This utility model relates to the technical field of locks, and in particular to an anti-freezing lock cylinder. Background Technology

[0002] Currently, a new unlocking method has emerged in the market for anti-twist lock cylinders. This involves injecting water into the lock cylinder, then freezing it with liquid nitrogen, or injecting glue, and finally breaking off the front end of the lock cylinder. Previously, anti-twist lock cylinders relied on a spring-loaded locking pin that would spring out and lock the locking mechanism after the retaining plate was pulled out. Now, by injecting water and then freezing it with liquid nitrogen, these locking pins and springs are frozen solid, preventing them from locking the locking mechanism and allowing the lock cylinder to be opened. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a freeze-proof lock cylinder that is simple in structure, has good security, and integrates multiple anti-theft functions, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] An anti-freeze lock cylinder includes an inner lock cylinder and an outer lock cylinder rotatably disposed in a lock cylinder hole formed in the lock shell. A sand iron is disposed between the inner and outer lock cylinders, and a front inner rotating component and a rear inner rotating component are fitted in the sand iron. Both the inner and outer lock cylinders have key guide grooves in their keyholes to guide the insertion of the key. A locking pin through hole is formed radially and vertically through the front inner rotating component, and a double-safety locking pin assembly is provided in the locking pin through hole to lock the sand iron from above and below after being ejected. The sand iron has an upper locking pin groove and a lower locking pin groove at the positions corresponding to the locking pin through hole, which allow the double-safety locking pin assembly to engage when ejected. The outer lock cylinder has a stop bead hole formed at the end of the key guide groove, which is transversely connected to the key guide groove, and the stop bead hole has a stop bead to prevent the needle from continuing to be inserted along the key guide groove.

[0006] To optimize the above technical solution, the following measures were also taken:

[0007] The aforementioned double-locking pin assembly consists of an upper locking pin, a lower locking pin, and a locking spring disposed between the upper and lower locking pins.

[0008] The aforementioned iron sand is provided with baffles that, under normal circumstances, can seal the double safety pin assembly in the pin through hole. The baffles include an upper baffle for sealing the upper pin and a lower baffle for sealing the lower pin.

[0009] The aforementioned upper baffle is a T-shaped stainless steel sheet, with the T-shaped head of the upper baffle hooked into the hook groove formed by the outer lock core.

[0010] The aforementioned lower baffle is a stainless steel sheet with a hanging hole at the head. The lock housing is formed with a breakable groove that is easily broken during violent disassembly. Furthermore, a pin assemblies are installed in the pin holes formed in the lock housing, and the hanging hole of the lower baffle is attached to the pins of the pin assemblies.

[0011] Both the inner and outer lock cylinders are equipped with two anti-drilling pins; the lock case is equipped with four anti-drilling pins.

[0012] A compression spring is provided between the aforementioned rear inner rotating component and the inner lock core, and an inner rotating component rivet is inserted through the rear inner rotating component, with the front end of the inner rotating component rivet extending into the front inner rotating component.

[0013] Compared with existing technologies, this invention features a double-locking pin assembly in the front inner rotating component. This assembly can lock the locking pin from both above and below, thereby improving the lock's security. The outer lock cylinder also has a stop bead hole with a stop bead. This stop bead prevents the needle from continuing to insert along the key guide groove into the front inner rotating component and the double-locking pin assembly, thus preventing unauthorized personnel from disabling the double-locking pin assembly through methods such as injecting glue or liquid nitrogen.

[0014] This utility model has a simple structure, is safe and reliable, and integrates multiple anti-theft functions such as anti-drilling, anti-explosion, and anti-fluid injection. Attached Figure Description

[0015] Figure 1 This is an exploded view of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the bead-blocking hole configuration of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure where the inserted needle is blocked by a retaining bead;

[0019] Figure 5 This is a schematic diagram showing the state of the double safety pin assembly of this utility model when it is sealed in the pin through hole;

[0020] Figure 6 This is a schematic diagram showing the state of the double insurance pin assembly when it pops out;

[0021] Figure 7 This is a schematic diagram of the state of the lock housing of this utility model after it has been forcibly broken. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Figures 1 to 7 This is a schematic diagram of the structure of this utility model.

[0024] The attached diagrams are labeled as follows: Snap ring H, Anti-drilling pin X, Key Y, Needle Z, Lock case 1, Easy break groove 1a, Inner lock cylinder 2, Outer lock cylinder 3, Bead stop hole 3a, Hook groove 3b, Bead stop 31, Sand iron 4, Upper snap pin groove 4a, Lower snap pin groove 4b, Sand iron hole pin 41, Washer 42, Front inner rotating part 5, Rear inner rotating part 6, Compression spring 61, Inner rotating part rivet 62, Double safety snap pin assembly 7, Upper snap pin 71, Lower snap pin 72, Snap pin spring 73, Upper stop plate 81, Lower stop plate 82, Tumbler assembly 9, Tumbler 91.

[0025] like Figure 1 and Figure 2 As shown, this utility model discloses an anti-freezing lock cylinder. The anti-freezing lock cylinder not only has the functions of anti-drilling, anti-prying, and anti-violent disassembly, but also has the function of preventing the injection of glue or liquid nitrogen into the needle Z-turning part or the locking pin assembly.

[0026] This utility model's anti-freeze lock cylinder includes a lock shell 1 with inner and outer lock cylinder holes. An inner lock cylinder 2 is rotatably installed in the inner lock cylinder hole of the lock shell 1, and an outer lock cylinder 3 is rotatably installed in the outer lock cylinder hole of the lock shell 1. A sandblasting iron 4 is provided between the inner lock cylinder 2 and the outer lock cylinder 3, and an inner rotating component is rotatably fitted within the sandblasting iron 4. The inner rotating component includes a front inner rotating component 5 and a rear inner rotating component 6 that can rotate relative to each other. Both the inner lock cylinder 2 and the outer lock cylinder 3 have keyholes formed in them. A key guide groove is formed in the keyhole to guide the insertion of a key Y, and the key guide groove also effectively limits the vertical movement range of the key Y within the keyhole. Figure 2 and Figure 5 As can be seen, the front inner rotating part 5 of this utility model has a radially vertically through-hole for locking pins, and a double-safety locking pin assembly 7 is provided in the locking pin through-hole. When the lock is forcibly broken, the double-safety locking pin assembly 7 can pop out from both the top and bottom to lock the locking shot 4. The inner hole of the shot 4 has an upper locking pin groove 4a and a lower locking pin groove 4b respectively provided at the positions corresponding to the locking pin through-hole. The upper locking pin groove 4a and the lower locking pin groove 4b allow the double-safety locking pin assembly 7 to engage when it pops out. To prevent thieves from using a needle Z to insert along the key guide groove into the front inner rotating part 5 or the double-safety locking pin assembly 7 to damage the double-safety locking pin assembly 7 by injecting water, freezing, or injecting glue, thus preventing it from popping out when the lock is broken, as... Figure 3 As shown, the outer lock cylinder 3 has a bead-stopping hole 3a formed at the end of the key guide groove, which is laterally connected to the key guide groove. A bead-stopping ball 31 is installed in this bead-stopping hole 3a to prevent the needle Z from being further inserted. Figure 4As shown, the stop bead 31 blocks the passage of the key guide groove. When the needle Z is inserted into the key guide groove and reaches the stop bead 31, the stop bead 31 blocks the end of the key guide groove, preventing the needle Z from being inserted deeper into the double safety pin assembly 7, thereby achieving the purpose of preventing liquid injection freezing or glue injection damage.

[0027] In the embodiments, as shown Figure 5 and Figure 6 As shown, the double-safety locking pin assembly 7 of this utility model consists of an upper locking pin 71, a lower locking pin 72, and a locking pin spring 73 disposed between the upper locking pin 71 and the lower locking pin 72. A baffle plate is inserted into the inner hole of the sand iron 4 to seal the double-safety locking pin assembly 7 in the locking pin through hole under normal conditions. The baffle plate includes an upper baffle plate 81 for sealing the upper locking pin 71 and a lower baffle plate 82 for sealing the lower locking pin 72. The sand iron 4 also contains a sand iron hole pin 41 and a washer 42.

[0028] In this embodiment, the upper baffle 81 of this utility model is a T-shaped stainless steel sheet, and the T-shaped head of the upper baffle 81 hooks into the hook groove 3b formed in the outer lock cylinder 3. The lower baffle 82 is a stainless steel sheet with a hanging hole at the head. The lock housing 1 is formed with a breakable groove 1a that is easily broken during violent disassembly, and a pin assembly 9 is installed in the pin hole formed in the lock housing 1. The hanging hole of the lower baffle 82 is attached to the pin 91 of the pin assembly 9. Figure 7 As shown, when subjected to forced unlocking, the lock housing 1 will be broken at the breakable groove 1a, at which point the outer lock cylinder 3 will be pulled out along with the broken outer lock part. During the process of pulling out the outer lock cylinder 3, the upper stop plate 81 and the lower stop plate 82 are pulled out together, thereby releasing the obstruction of the double safety pin assembly 7. The upper pin 71 and the lower pin 72 can pop out under the action of the pin spring 73 and lock into the upper pin groove 4a and the lower pin groove 4b of the sand iron 4. Even if the upper pin 71 is damaged and cannot pop out, the lower pin 72 of the double safety pin assembly 7 can still pop out.

[0029] In the embodiments, as shown Figure 1 As shown, both the inner lock cylinder 2 and the outer lock cylinder 3 of this utility model are equipped with two anti-drilling pins X; the lock shell 1 is equipped with four anti-drilling pins X. The anti-drilling pins X are cylindrical pins made of a special hard material, which can prevent electric drills from drilling through them, thus increasing the difficulty for external parties to damage the lock with an electric drill.

[0030] In this embodiment, both the inner lock cylinder 2 and the outer lock cylinder 3 of this utility model are fitted with retaining springs H. A compression spring 61 is provided between the rear inner rotating part 6 and the inner lock cylinder 2, and an inner rotating part rivet 62 is provided through the rear inner rotating part 6, with the front end of the inner rotating part rivet 62 extending into the front inner rotating part 5.

[0031] The preferred embodiment of this utility model has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of this utility model.

Claims

1. A freeze-proof lock cylinder, comprising an inner lock cylinder (2) and an outer lock cylinder (3) rotatably disposed in a lock cylinder hole formed in a lock housing (1), wherein a sand iron (4) is disposed between the inner lock cylinder (2) and the outer lock cylinder (3), and a front inner rotating part (5) and a rear inner rotating part (6) are fitted in the sand iron (4); both the inner lock cylinder (2) and the outer lock cylinder (3) are provided with key guide grooves for guiding the insertion of a key (Y); characterized in that: The front inner rotating part (5) is formed with a through hole in a radial direction and vertically through it. The through hole is provided with a double safety pin assembly (7) that can lock the sand iron (4) in the upper and lower directions after it is ejected. The sand iron (4) is provided with an upper pin groove (4a) and a lower pin groove (4b) at the position corresponding to the through hole, which can lock the double safety pin assembly (7) when it is ejected. The outer lock cylinder (3) is formed with a bead-stopping hole (3a) that is laterally connected to the key guide groove at the end of the key guide groove. The bead-stopping hole (3a) is provided with a bead-stopping ball (31) to prevent the needle (Z) from continuing to insert along the key guide groove.

2. The anti-freezing lock cylinder according to claim 1, characterized in that: The double-locking pin assembly (7) consists of an upper locking pin (71), a lower locking pin (72), and a locking pin spring (73) disposed between the upper locking pin (71) and the lower locking pin (72).

3. The anti-freezing lock cylinder according to claim 2, characterized in that: The sand iron (4) is provided with a baffle plate that can seal the double safety pin assembly (7) in the pin through hole under normal conditions. The baffle plate includes an upper baffle plate (81) for sealing the upper pin (71) and a lower baffle plate (82) for sealing the lower pin (72).

4. The anti-freezing lock cylinder according to claim 3, characterized in that: The upper baffle (81) is a T-shaped stainless steel sheet, and the T-shaped head of the upper baffle (81) is hooked in the hook groove (3b) formed by the outer lock core (3).

5. A freeze-proof lock cylinder according to claim 4, characterized in that: The lower baffle (82) is a stainless steel sheet with a hanging hole at the head. The lock shell (1) is formed with a breakable groove (1a) that is easily broken when violently disassembled. A pin assembly (9) is installed in the pin hole formed in the lock shell (1). The hanging hole of the lower baffle (82) is attached to the pin (91) of the pin assembly (9).

6. A freeze-proof lock cylinder according to claim 5, characterized in that: The inner lock cylinder (2) and the outer lock cylinder (3) are each equipped with two anti-drilling pins (X); the lock shell (1) is equipped with four anti-drilling pins (X).

7. A freeze-proof lock cylinder according to claim 6, characterized in that: A compression spring (61) is provided between the rear inner rotating part (6) and the inner lock core (2), and an inner rotating part rivet (62) is provided in the rear inner rotating part (6), with the front end of the inner rotating part rivet (62) extending into the front inner rotating part (5).

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