Safety lock cylinder and lock device
By setting a force transmission shaft and a pin clamping and blocking component in the inner cavity of the lock cylinder, the problem of liquid causing the self-locking structure to fail is solved, thus improving the security of the lock cylinder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-03-27
AI Technical Summary
When existing lock cylinders are disassembled by external force, the self-locking structure can fail due to the introduction of liquids such as refrigerant or glue, resulting in insufficient security.
Design a safety lock cylinder by setting a force transmission shaft and a pin in the inner cavity of the dial to clamp a blocking component to seal the first inner hole or the second inner hole, prevent liquid from entering, and ensure that the self-locking structure does not fail.
It effectively prevents liquid from entering the lock cylinder, avoids failure of the self-locking structure, and improves the security performance of the lock cylinder.
Smart Images
Figure CN121738428A_ABST
Abstract
Description
[0001] This application claims priority to Chinese Patent Application No. 2025107326429, filed on June 3, 2025, entitled "Security Lock Cylinder and Locking Device", the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of lock cylinder technology, and in particular to a security lock cylinder and a locking device. Background Technology
[0003] Pin tumbler locks are one of the most common types of mechanical locks, widely used in everyday life scenarios such as door locks, drawer locks, and bicycle locks. Their core principle is to control the rotation of the lock cylinder through the arrangement and combination of a series of pins (metal pins). The rotation of the lock cylinder drives a turntable, which in turn moves the bolt, thus locking or unlocking the lock.
[0004] Existing lock cylinders have a self-locking structure. When the lock cylinder is disassembled by external force, the self-locking structure is triggered to restrict the rotation of the dial, making it impossible to unlock. However, by introducing liquid from the outside of the lock cylinder, the liquid enters the dial and causes the self-locking structure to fail. The liquid can be glue or coolant. The self-locking structure can no longer restrict the rotation of the dial. After the lock cylinder is disassembled by external force, the dial can be easily rotated and the lock can be unlocked. The security of the lock cylinder is insufficient. Summary of the Invention
[0005] The purpose of this application is to solve the aforementioned technical problems by providing a safety lock cylinder and locking device, thereby effectively preventing liquid from entering the interior of the safety lock cylinder and improving its security performance. To achieve the above objective, the technical solution of this application is as follows: In a first aspect, this application provides a security lock cylinder, including a housing, in which an outer lock cylinder, a dial assembly, and a self-locking structure are sequentially arranged along the axial direction; the dial assembly has a dial inner cavity, in which a blocking member is accommodated, and the dial inner cavity has opposing first and second inner holes along the axial direction; the outer lock cylinder includes a force transmission shaft, which movably passes through the first inner hole and is connected to the blocking member; the self-locking structure includes a pin, which movably passes through the second inner hole and abuts against the blocking member; the pin and the force transmission shaft clamp the blocking member relative to each other, so that the blocking member is sealed in the first or second inner hole.
[0006] In one possible implementation, the dial assembly further includes a dial component, a dial core, and an inner drive component arranged coaxially. The dial core is inserted into the inner end of the dial component to form a dial cavity. A first partition is provided on the inner circumference of the dial component, and a second partition is provided on the inner circumference of the dial core. The first partition and the second partition are located on opposite sides of the dial cavity. The inner drive component is located in the dial cavity and is connected to the dial core and the dial component. A first inner hole is formed in the inner drive component and the first partition, and a second inner hole is formed in the second partition.
[0007] In one possible implementation, the blocking member is located between the inner transmission member and the second partition. The blocking member has an arc-shaped outer wall, and the first inner hole and the second inner hole respectively abut against the arc-shaped outer wall to form a seal.
[0008] In one possible implementation, the outer lock core further includes an outer transmission component and an outer core body. The inner circumference of the outer core body is inserted into and rotates synchronously with the outer transmission component. The dial assembly is sleeved on the outer circumference of the outer core body. The outer transmission component moves axially and is movably engaged with the dial assembly.
[0009] In one possible implementation, the outer lock core further includes a force transmission seat, an outer transmission groove is provided in the outer transmission component, the force transmission seat is elastically disposed in the outer transmission groove, the force transmission shaft passes through the outer transmission groove and is connected to the force transmission seat, a bushing is provided on the force transmission shaft, the bushing is located between the outer transmission component and the blocking component, and the bushing moves against the outer transmission component.
[0010] In one possible implementation, the self-locking structure further includes a self-locking core that moves axially, which is inserted into and rotates synchronously with the dial assembly. A radially extending limiting member is provided on the inner circumference of the housing. When the self-locking core abuts against the limiting member, the self-locking core and the dial assembly are locked. When the self-locking core separates from the limiting member, the self-locking core and the dial assembly are unlocked.
[0011] In one possible implementation, the safety lock cylinder also includes an inner lock cylinder, which is inserted into the inner end of the self-locking cylinder. A cam structure is provided between the outer periphery of the inner lock cylinder and the inner periphery of the self-locking cylinder to convert the rotational motion of the inner lock cylinder into the linear motion of the self-locking cylinder.
[0012] In one possible implementation, the inner end of the self-locking cylinder is provided with a locking part, and the outer periphery of the inner lock cylinder is provided with a mating part, and the locking part and the mating part are movably locked together.
[0013] In one possible implementation, an inner core cavity is provided in the inner lock cylinder, a pin seat is sleeved on the pin, and a beveled end is provided at the end of the pin facing the blocking member. The pin is elastically disposed in the inner core cavity and penetrates the self-locking cylinder. The pin seat moves against the inner end of the self-locking cylinder. When the force transmission shaft separates from the blocking member, the pin seat pushes the self-locking cylinder to lock with the dial assembly, and the beveled end pushes the blocking member against the inner wall of the dial cavity.
[0014] In one possible implementation, the security lock cylinder further includes a collar, which is fitted around the outer periphery of the dial assembly and connected to the housing, with the outer end of the collar aligned with the outer end of the dial assembly.
[0015] Secondly, this application provides a locking device including the aforementioned security lock cylinder.
[0016] Compared with the prior art, the advantages of the security lock cylinder and locking device of this application are mainly reflected in: A force-transmitting shaft that moves axially is installed in the first inner hole, and a push pin that moves axially is installed in the second inner hole. The force-transmitting shaft and the push pin balance and clamp the blocking component, so that the blocking component is accurately positioned in the first or second inner hole, ensuring the sealing performance between the blocking component and the first or second inner hole. By setting the push pin and the force-transmitting shaft to clamp the blocking component relative to each other, the blocking component is sealed in the first or second inner hole, which can effectively prevent liquid from entering the inside from the outside of the safety lock cylinder, avoid the failure of the self-locking structure in the safety lock cylinder, and effectively improve the safety performance of the safety lock cylinder. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a security lock cylinder provided in Embodiment 1 of this application; Figure 2 for Figure 1 The diagram shown is a structural schematic of one embodiment of the housing; Figure 3 for Figure 1 The diagram shown is a structural schematic of one embodiment of the disassembled casing; Figure 4 for Figure 3 The diagram shows the internal and external lock cylinders in one embodiment. Figure 5 for Figure 3 The diagram shown is a structural schematic of one embodiment of the dial component; Figure 6 for Figure 3 The dial component shown is illustrated in the second structural schematic diagram of one embodiment; Figure 7 for Figure 3 The diagram shown is a structural schematic of the external lock cylinder in one embodiment. Figure 8 for Figure 7 The diagram shown is a structural schematic of the external transmission component in one embodiment. Figure 9 for Figure 3 The diagram shows a structural schematic of the dial core and self-locking core in one embodiment. Figure 10 for Figure 3 The diagram shows a structural schematic of the self-locking core and the inner locking core in one embodiment. Figure 11 for Figure 3 The diagram shown is a structural schematic of the inner lock cylinder in one embodiment. Figure 12 for Figure 4 The diagram shows a structural schematic of the force transmission shaft and ejector pin in one embodiment. Figure 13 for Figure 1The diagram shows a cross-sectional view of the security lock cylinder in its normal, unlocked state according to one embodiment. Figure 14 for Figure 1 The diagram shows a cross-sectional view of the security lock cylinder in a normal key-unlocked state according to one embodiment. Figure 15 for Figure 1 One of the schematic cross-sectional views of the security lock cylinder in one embodiment with the outer lock cylinder removed; Figure 16 for Figure 1 The second cross-sectional schematic diagram of the safety lock cylinder in the external lock cylinder removal state in one embodiment; Figure 17 for Figure 1 The diagram shows a cross-sectional view of a security lock cylinder being unlocked via the inner lock cylinder in one embodiment, with the outer lock cylinder removed. Figure 18 This is a schematic diagram of the structure of a security lock cylinder provided in Embodiment 2 of this application; Figure 19 for Figure 18 The diagram shows a structural schematic of the collar in one embodiment of the safety lock cylinder; Figure 20 This is a partial structural diagram of a security lock cylinder provided in Embodiment 3 of this application; Figure 21 for Figure 20 The diagram shown is a structural schematic of a safety lock cylinder assembled with a retaining ring in one embodiment. Figure 22 This is a schematic diagram of a security lock cylinder with a closed end provided in Embodiment 4 of this application.
[0018] Figure label: 1. Housing, 11. Limiting component, 12. First slot, 13. Second slot, 14. First retaining ring, 15. Second retaining ring, 16. Third retaining ring, 17. Fourth retaining ring, 18. Tumbler module, 19. Fragile part; 2. Outer lock core, 21. Force transmission shaft, 22. Outer transmission component, 23. Outer core body, 24. Outer transmission part, 25. Lock core channel, 26. Bushing, 27. Through hole, 28. Fixing ring, 29. Closed end; Force transmission seat 31, outer transmission groove 32, notch 33, first elastic element 34, retaining ring 35; 4. Dial assembly, 41. Dial inner cavity, 42. Blocking member, 43. First inner hole, 44. Second inner hole, 45. Arc-shaped outer wall, 46. Planar outer wall, 47. Dial outer cavity, 48. Collar, 49. Positioning hole; 51. Shift wheel assembly 52. Shift wheel body 53. Shift wheel section 54. Shift wheel core 55. Internal transmission component 55. First partition plate 56. Second partition plate 57. First internal transmission section 58. Second internal transmission section 59. 6. Self-locking structure; 61. Ejector pin; 62. Self-locking core; 63. Snap-fit part; 64. Beveled end; 65. Pin seat; 66. Guide part; 67. Through hole; 7. Inner lock core, 71. Mating part, 72. Inner core cavity, 73. Second elastic element, 74. Cam structure, 75. Arc-shaped protrusion, 76. Follower; Inner core 81, inner core seat 82, knob part 83. Detailed Implementation
[0019] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0020] Example 1 This embodiment provides a security lock cylinder with a self-locking function. When the exterior of the lock cylinder is forcibly removed, the self-locking function is triggered. However, before the exterior of the lock cylinder is forcibly removed, liquids such as coolant or glue may be introduced into the lock cylinder to disable the self-locking function. Subsequently, the exterior structure of the lock cylinder can be forcibly dismantled, making it easy to unlock. The security performance of the lock cylinder is insufficient. Therefore, this embodiment improves the security lock cylinder to effectively prevent the problem of self-locking function failure caused by the introduction of liquids from the exterior of the lock cylinder. The inner and outer sides are defined along the length of the security lock cylinder. The security lock cylinder can be applied to the door. Typically, the outer side of the security lock cylinder faces the outdoor space, and the inner side faces the indoor space. The following is a detailed description.
[0021] like Figures 1-12 As shown, the safety lock cylinder includes a housing 1. An outer lock cylinder 2, a dial assembly 4, and a self-locking structure 6 are sequentially arranged axially from the outside to the inside of the housing 1. The dial assembly 4 has a dial inner cavity 41, in which a blocking member 42 is housed. The dial inner cavity 41 has opposing first inner holes 43 and second inner holes 44 along the axial direction. The outer lock cylinder 2 includes a force transmission shaft 21, which movably passes through the first inner hole 43 and is connected to the blocking member 42. The self-locking structure 6 includes a pin 61, which movably passes through the second inner hole 44 and abuts against the blocking member 42. The pin 61 and the force transmission shaft 21 clamp the blocking member 42 relative to each other, so that the blocking member 42 is sealed in the first inner hole 43 or the second inner hole 44.
[0022] For example, the safety lock cylinder is installed in a designated position, such as on a door. In the initial state, i.e., without being forcibly damaged or without the key being used, the push pin 61 and the force transmission shaft 21 clamp the blocking member 42. The force exerted by the push pin 61 on the blocking member 42 is greater than the force exerted by the force transmission shaft 21 on the blocking member 42, so that the blocking member 42 seals the first inner hole 43. Since the blocking member 42 seals with the first inner hole 43, which is located near the outer side of the safety lock cylinder, liquid is effectively prevented from entering the inner cavity 41 of the dial wheel from the outer side of the safety lock cylinder through the first inner hole 43. This prevents liquid from affecting the self-locking structure 6 and prevents the self-locking structure 6 from failing. At the same time, the seal between the blocking member 42 and the first inner hole 43 also effectively prevents impurities from entering, providing a certain degree of protection.
[0023] When the safety lock cylinder is subjected to external force, such as a key or other external component applying external force to the force transmission shaft 21, the force exerted by the force transmission shaft 21 on the blocking member 42 is greater than the force exerted by the pin 61 on the blocking member 42, so that the blocking member 42 seals the second inner hole 44. If the key is used to apply external force to the force transmission shaft 21, the key and the dial assembly 4 cooperate to achieve normal unlocking, and the movement of the pin 61 toward the inside of the safety lock cylinder does not affect the unlocking action. If other external components are used to apply external force to the force transmission shaft 21, even if a small amount of liquid overflows from the first inner hole 43 into the dial inner cavity 41, the liquid cannot affect the self-locking structure 6 because the blocking member 42 seals the second inner hole 44, thus preventing the self-locking structure 6 from failing.
[0024] If the outer lock cylinder 2 is forcibly removed and separated from the blocking member 42, the pin 61 can push the blocking member 42 against the inner wall of the dial wheel cavity 41. The blocking member 42 at least partially blocks the first inner hole 43, which can still prevent other external parts from extending into the inner side of the dial wheel assembly 4, thereby improving the security performance of the safety lock cylinder.
[0025] By setting the ejector pin 61 and the force transmission shaft 21 to clamp the blocking member 42, the blocking member 42 is sealed in the first inner hole 43 or the second inner hole 44, which can effectively prevent liquid from entering the inner side from the outside of the safety lock cylinder, avoid the failure of the self-locking structure 6 in the safety lock cylinder, and effectively improve the safety performance of the safety lock cylinder; the force transmission shaft 21 that moves axially is set in the first inner hole 43, and the ejector pin 61 that moves axially is set in the second inner hole 44. The force transmission shaft 21 and the ejector pin 61 clamp the blocking member 42 in a balanced manner, so that the blocking member 42 is accurately positioned in the first inner hole 43 or the second inner hole 44, ensuring the sealing performance of the blocking member 42 with the first inner hole 43 or the second inner hole 44.
[0026] In one embodiment, the dial assembly 4 further includes a dial component 51, a dial core 54, and an inner drive component 55 arranged coaxially. The dial core 54 is inserted into the inner end of the dial component 51 to form a dial inner cavity 41. A first partition 56 is provided on the inner periphery of the dial component 51, and a second partition 57 is provided on the inner periphery of the dial core 54. The first partition 56 and the second partition 57 are located on opposite sides of the dial inner cavity 41. The inner drive component 55 is located in the dial inner cavity 41 and is connected to the dial core 54 and the dial component 51 respectively. A first inner hole 43 is formed on the inner drive component 55 and the first partition 56, and a second inner hole 44 is formed on the second partition 57.
[0027] For example, such as Figures 3-6 As shown, the dial component 51 includes a dial body 52 and a dial portion 53 connected to the dial body 52. A first slot 12 is provided on the housing 1, and the dial body 52 is accommodated in the first slot 12. A second slot 13 is provided on the bottom wall of the first slot 12, and the dial portion 53 extends into the second slot 13. When the dial component 51 rotates to make the dial portion 53 face downwards, the dial portion 53 passes through the second slot 13. When the dial component 51 rotates to make the dial portion 53 face upwards, the dial portion 53 extends above the housing 1, thereby abutting against the locking tongue (not shown) of the locking device. The dial portion 53 drives the locking tongue to unlock and lock. When the dial component 51 is locked with the self-locking structure 6, the dial component 51 cannot be rotated by the external force of the safety lock cylinder, thus preventing the dial component 51 from being unlocked.
[0028] For example, both the dial body 52 and the dial core 54 are generally cylindrical structures. The inner circumference of the dial body 52 is provided with a first partition 56. The outer circumference of a portion of the dial core 54 is inserted into the inner circumference of the dial body 52, and another portion of the dial core 54 extends to the inner circumference of the housing 1. A first retaining ring 14 is provided between the dial body 52 and the housing 1 and is embedded in the dial core 54. The inner diameter of the first retaining ring 14 is smaller than the inner diameter of the housing 1. Thus, the dial core 54 is secured to its position in the housing 1 by the first retaining ring 14, preventing the dial core 54 from moving axially.
[0029] For example, the inner drive member 55 is located in the inner cavity 41 of the dial wheel and is connected to the dial wheel core 54 and the dial wheel component 51 respectively. One end of the inner drive member 55 abuts against the first partition 56, and the other end of the inner drive member 55 is connected to the dial wheel core 54. The outer periphery of the inner drive member 55 is provided with a first inner drive portion 58 and a second inner drive portion 59 extending axially. The first inner drive portion 58 is inserted into the outer end of the dial wheel core 54, and the second inner drive portion 59 is inserted into the inner periphery of the dial wheel body 52. The inner drive member 55, the dial wheel core 54, and the dial wheel component 51 rotate synchronously. When the dial wheel core 54 is subjected to a rotational force from the inside of the safety lock cylinder, the dial wheel core 54 drives the inner drive member 55 to rotate, and the inner drive member 55 drives the dial wheel component 51 to rotate. Similarly, when the dial wheel component 51 is subjected to a rotational force from the outside of the safety lock cylinder, the dial wheel component 51 drives the inner drive member 55 to rotate, and the inner drive member 55 drives the dial wheel core 54 to rotate.
[0030] For example, a second retaining ring 15 is embedded in the outer periphery of the dial body 52. The second retaining ring 15 is located between the dial part 53 and the self-locking structure 6, and is clamped at both ends of the housing 1 along its width direction. The second retaining ring 15 does not affect the rotation of the dial body 52, and the dial component 51 is limited in the first slot 12 by the second retaining ring 15. A breakable part 19 is provided at the bottom of the housing 1 between the outer lock cylinder 2 and the dial assembly 4. When the outer lock cylinder 2 of the safety lock cylinder is forcibly removed, the breakable part 19 breaks, and the outer lock cylinder 2 separates from the dial assembly 4. In order to prevent the dial assembly 4 from being removed, the second retaining ring 15 can effectively restrict the axial movement of the dial assembly 4. The dial assembly 4 is located inside the door and cannot be easily removed, thus protecting the dial assembly 4.
[0031] In one embodiment, the blocking member 42 is located between the inner transmission member 55 and the second partition 57. The blocking member 42 has an arc-shaped outer wall 45, and the first inner hole 43 and the second inner hole 44 respectively abut against the arc-shaped outer wall 45 to form a seal.
[0032] For example, such as Figure 12 , Figure 13 As shown, the blocking member 42 can be a sphere, and has an arc-shaped outer wall 45 and a flat outer wall 46. The force transmission shaft 21 can be interference-fitted with the arc-shaped outer wall 45. When the force transmission shaft 21 moves out of the first inner hole 43, the force transmission shaft 21 can be separated from the blocking member 42. The first inner hole 43 and / or the second inner hole 44 are tapered holes. The central axis of the arc-shaped outer wall 45 can be on the same straight line as the central axis of the first inner hole 43 or the central axis of the second inner hole 44. The force transmission shaft 21 is inserted into the central axis of the arc-shaped outer wall 45. The curvature of the relative contact surface of the arc-shaped outer wall 45 and the tapered hole is consistent, thereby achieving a sealing effect. The flat outer wall 46 abuts against the ejector pin 61, realizing the balanced clamping action of the ejector pin 61 and the force transmission shaft 21 on the blocking member 42.
[0033] In one embodiment, the outer lock core 2 further includes an outer transmission member 22 and an outer core body 23. The inner circumference of the outer core body 23 is inserted into the outer transmission member 22 and rotates synchronously. The dial assembly 4 is sleeved on the outer circumference of the outer core body 23. The outer transmission member 22 moves axially and is movably engaged with the dial assembly 4.
[0034] For example, such as Figures 3-8 As shown, the outer drive component 22 has an axially extending outer drive section 24 on its outer periphery; the outer core 23 has a lock cylinder channel 25, and the housing 1 also has a pin tumbler module 18, which is correspondingly arranged with the lock cylinder channel 25. A key (not shown) can be inserted into the lock cylinder channel 25 by engaging the pin tumbler module 18. The key extends from the lock cylinder channel 25 into the outer drive component 22, causing the outer drive section 24 to move axially and engage with the inner wall of the dial wheel outer cavity 47, thus linking the outer drive component 22 with the dial wheel assembly 4. Specifically, the dial wheel outer cavity 47 is formed between the outer core 23 and the first partition 56. Unlocking is achieved by rotating the key, which drives the outer drive component 22, the dial wheel assembly 4, and the outer core 23 to rotate. The outer drive component 22 serves as the component that drives the key and the dial wheel assembly 4, ensuring accurate engagement between the dial wheel assembly 4 and the key.
[0035] In one embodiment, the outer lock core 2 further includes a force transmission seat 31, and an outer transmission groove 32 is provided in the outer transmission member 22. The force transmission seat 31 is elastically disposed in the outer transmission groove 32, and the force transmission shaft 21 passes through the outer transmission groove 32 and is connected to the force transmission seat 31.
[0036] For example, such as Figure 8 As shown, the outer transmission groove 32 is connected to the lock cylinder channel 25. The outer end of the outer transmission groove 32 is provided with a notch 33 for the exposed force transmission seat 31. The lock cylinder channel 25 is connected to the outer transmission groove 32 through the notch 33. A first elastic element 34 is provided between the force transmission seat 31 and the side wall of the outer transmission groove 32 away from the lock cylinder channel 25. The first elastic element 34 can be a spring. When the key is inserted into the lock cylinder channel 25, it can enter the outer transmission groove 32 through the notch 33. Then the key and the force transmission seat 31 move against each other. The force transmission seat 31 compresses the first elastic element 34 in the outer transmission groove 32. The force transmission shaft 21 moves axially and extends into the inner cavity 41 of the dial wheel. At the same time, the outer transmission element 22 extends into the outer cavity 47 of the dial wheel. The outer transmission element 22 and the inner wall of the outer cavity 47 of the dial wheel can achieve synchronous rotation through the limit of the outer transmission part 24. When the key is removed from the lock cylinder channel 25, the force transmission seat 31 is reset and the first elastic element 34 is in a pressure-free state.
[0037] A bushing 26 is fitted onto the force transmission shaft 21. The bushing 26 is located between the outer transmission component 22 and the inner transmission component 55. The bushing 26 moves against the outer transmission component 22. The diameter of the bushing 26 is adapted to the diameter of the first inner hole 43. The bushing 26 does not affect the movement of the force transmission shaft 21 in the first partition 56. The outer transmission component 22 is provided with a through hole 27 corresponding to the force transmission shaft 21. The diameter of the bushing 26 is larger than the diameter of the through hole 27. The bushing 26 plays a pushing role in the reset of the outer transmission component 22. When the key is disengaged from the lock cylinder channel 25, the pin 61 pushes the blocking component 42 and the force transmission shaft 21 to reset. The bushing 26 pushes the outer transmission component 22 to disengage from the outer cavity 47 of the dial wheel and reset into the outer core 23. The dial wheel assembly 4 and the outer lock cylinder 2 can rotate separately.
[0038] For example, when the outer lock cylinder 2 is forcibly removed, the outer core 23 separates from the dial assembly 4, and the force transmission seat 31 can directly disengage from the outer transmission groove 32 from the notch 33, thereby realizing the separation of the force transmission shaft 21 from the blocking member 42, with the blocking member 42 remaining in the inner cavity 41 of the dial.
[0039] For example, a third retaining ring 16 is provided between the housing 1 and the dial component 51, which is embedded in the outer periphery of the outer core 23. The inner diameter of the third retaining ring 16 is smaller than the inner diameter of the dial component 51, and the inner diameter of the third retaining ring 16 is smaller than the inner diameter of the housing 1, which effectively prevents the outer core 23 from axially moving and ensures the positional stability of the outer core 23 extending into the dial component 51.
[0040] In one embodiment, the self-locking structure 6 further includes a self-locking core 62 that moves axially. The self-locking core 62 is inserted into and rotates synchronously with the dial assembly 4. A radially extending limiting member 11 is provided on the inner periphery of the housing 1. When the self-locking core 62 abuts against the limiting member 11, the self-locking core 62 locks with the dial assembly 4. When the self-locking core 62 separates from the limiting member 11, the self-locking core 62 unlocks with the dial assembly 4.
[0041] For example, such as Figure 4 , Figures 9-11 As shown, the inner circumference of the dial core 54 is inserted into the outer circumference of the self-locking core 62. The outer circumference of the self-locking core 62 is provided with a guide portion 66 extending axially. The guide portion 66 moves and cooperates with the inner circumference of the dial core 54. The guide portion 66 is used to guide the self-locking core 62 to move axially, ensuring that the dial core 54 and the self-locking core 62 rotate synchronously.
[0042] For example, the outer periphery of the self-locking core 62 is also correspondingly engaged with the limiting member 11 to lock the self-locking core 62 and the dial core 54. At this time, the self-locking core 62 and the dial core 54 cannot rotate, thereby restricting the rotation of the dial assembly 4 and realizing the self-locking function. When the outer periphery of the self-locking core 62 is separated from the limiting member 11, the self-locking core 62 and the dial core 54 can rotate synchronously without affecting the rotation of the dial assembly 4, thus realizing the unlocking function. The self-locking core 62 and the dial core 54 are coaxially arranged, and the end face of the self-locking core 62 extending into the dial core 54 is opposite to the second partition 57. During the process of the self-locking core 62 moving to the limiting member 11, sufficient space is reserved in the dial core 54 for the self-locking core 62 to move.
[0043] In one embodiment, the safety lock cylinder also includes an inner lock cylinder 7, which is inserted into the inner end of the self-locking cylinder 62. A cam structure 74 is provided between the outer periphery of the inner lock cylinder 7 and the inner periphery of the self-locking cylinder 62 so that the rotational motion of the inner lock cylinder 7 is converted into the linear motion of the self-locking cylinder 62.
[0044] For example, such as Figure 10 , Figure 11 As shown, the inner lock cylinder 7 includes an inner core body 81, an inner core seat 82 disposed on the outer periphery of the inner core body 81, and a knob portion 83 connected to the inner end of the inner core body 81. A fourth retaining ring 17 is provided on the housing 1 and is embedded in the outer periphery of the inner core seat 82. The inner diameter of the fourth retaining ring 17 is smaller than the inner diameter of the housing 1, thereby preventing the inner core seat 82 from axially moving and ensuring the stability of the inner lock cylinder 7 in the housing 1.
[0045] The outer periphery of the inner core 81 is inserted into the inner periphery of the self-locking core 62. The cam structure 74 includes an arcuate protrusion 75 disposed on the outer periphery of the inner core 81 and a follower 76 disposed on the inner periphery of the self-locking core 62. The follower 76 extends into the arcuate protrusion 75 and moves along the contour trajectory of the arcuate protrusion 75. When the inner core 81 is rotated, the arcuate protrusion 75 drives the follower 76 to move, converting the rotational motion of the inner core 81 into the linear motion of the self-locking core 62.
[0046] Under normal unlocking conditions, the self-locking cylinder 62 moves and separates from the limiting member 11, and the dial assembly 4, the self-locking structure 6, and the inner lock cylinder 7 rotate synchronously. After the outer lock cylinder 2 is forcibly removed, the self-locking cylinder 62 moves and engages with the limiting member 11. By rotating the knob part 83, the inner core 81 is rotated. The cam structure 74 converts the rotational motion of the inner lock cylinder 7 into the linear motion of the self-locking cylinder 62, so that the self-locking cylinder 62 separates from the limiting member 11, and the dial assembly 4 can rotate normally.
[0047] In one embodiment, the inner end of the self-locking core 62 is provided with a locking part 63, and the outer periphery of the inner lock core 7 is provided with a mating part 71. The locking part 63 and the mating part 71 are movably locked together so that the inner lock core 7 and the self-locking core 62 rotate synchronously.
[0048] For example, the outer periphery of the inner core seat 82 is provided with a mating part 71. When the locking part 63 engages with the mating part 71, the self-locking core 62 and the limiting member 11 are in an unlocked state, allowing the inner lock core 7 and the self-locking core 62 to rotate synchronously. When the locking part 63 separates from the mating part 71, the self-locking core 62 and the limiting member 11 are in a locked state, allowing the inner lock core 7 to rotate independently. The distance from the self-locking core 62 to the limiting member 11 is adapted to the distance from the locking part 63 to the mating part 71.
[0049] In one embodiment, the inner locking cylinder 7 is provided with an inner core cavity 72, and a needle seat 65 is sleeved on the ejector pin 61. The end of the ejector pin 61 facing the blocking member 42 is provided with a beveled end 64. The ejector pin 61 is elastically disposed in the inner core cavity 72 and passes through the self-locking cylinder 62. The needle seat 65 moves against the inner end of the self-locking cylinder 62. When the beveled end 64 clamps the blocking member 42 relative to the force transmission shaft 21, the needle seat 65 moves in the inner core cavity 72. When the force transmission shaft 21 separates from the blocking member 42, the needle seat 65 pushes the self-locking cylinder 62 to lock with the dial assembly 4, and the beveled end 64 pushes the blocking member 42 against the inner wall of the dial inner cavity 41.
[0050] For example, such as Figures 12-16 As shown, the ejector pin 61 is connected to the inner wall of the inner core cavity 72 and the inner wall of the self-locking core 62 through the second elastic element 73. The second elastic element 73 can be a spring. The second elastic element 73 is divided into two sections. One section of the second elastic element 73 is located between the inclined end 64 and the inner wall of the self-locking core 62, and the other section of the second elastic element 73 is located between the needle seat 65 and the knob part 83. The self-locking core 62 is provided with a through hole 67 corresponding to the ejector pin 61. The diameter of the needle seat 65 is larger than the diameter of the through hole 67. Under normal unlocking conditions, the movement of the ejector pin 61 within the inner core cavity 72 does not affect the displacement of the self-locking core 62, and the self-locking core 62 and the dial assembly 4 are in the unlocked state. When the outer lock core 2 is forcibly removed, the ejector pin 61 loses external force. When the pin seat 65 moves out of the inner core cavity 72, the pin seat 65 abuts against the self-locking core 62. The rebound force of the second elastic element 73 can push the self-locking core 62, and the locking part 63 of the self-locking core 62 separates from the mating part 71 of the inner lock core 7, thus unlocking the self-locking core 62. When the lock cylinder 62 and the dial assembly 4 are locked, the force transmission shaft 21 moves out of the dial assembly 4, and the blocking member 42 loses the support force of the force transmission shaft 21. It is pushed by the pin 61 and pressed against the inner wall of the dial cavity 41. Since the inclined end 64 of the pin 61 abuts against the arc-shaped outer wall 45 of the blocking member 42, the blocking member 42 is stably positioned in the dial cavity 41. The blocking member 42 can still block the first inner hole 43 and reduce the liquid from entering the dial cavity 41.
[0051] For example, the inner cavity 41 of the dial wheel is a roughly cylindrical space. The first inner hole 43 is formed on the central axis of the inner transmission member 55. The diameter of the blocking member 42 is larger than the radius of the inner cavity 41 of the dial wheel. When the pin 61 pushes the blocking member 42 against the inner wall of the inner cavity 41 of the dial wheel, the blocking member 42 also exerts a reaction force on the pin 61, so that the pin 61 is confined in the second inner hole 44. The blocking member 42 separates the space between the first inner hole 43 and the second inner hole. At this time, if other external parts are inserted from the outside of the dial wheel assembly 4, it is not easy to push the blocking member 42 and the pin 61, thereby preventing the self-locking cylinder 62 from unlocking the dial wheel assembly 4, effectively improving the security performance of the security lock cylinder.
[0052] The specific usage of the safety lock cylinder in this embodiment is as follows: like Figure 13 As shown, in the unlocked normal state, the force transmission shaft 21 is located in the outer cavity 47 of the dial wheel, the pin 61 is subjected to elastic force to abut against the blocking member 42 and pushes the blocking member 42 to seal in the first inner hole 43, and the self-locking core 62 and the dial wheel assembly 4 are in the unlocked state.
[0053] like Figure 14 As shown, in the normal unlocking state, the key enters the outer lock cylinder 2, pushes the force transmission shaft 21 and seals the blocking part 42 in the second inner hole 44, the ejector pin 61 exits the inner cavity of the dial 41, and does not affect the displacement of the self-locking cylinder 62. The self-locking cylinder 62 and the dial assembly 4 are still in the unlocked state; the outer lock cylinder 2, the dial assembly 4, the self-locking cylinder 62 and the inner lock cylinder 7 rotate synchronously to unlock.
[0054] like Figure 15 , Figure 16 As shown, in the abnormal state of violently removing the outer lock cylinder 2, the force transmission shaft 21 disengages from the blocking member 42, and the ejector pin 61 is pushed by the elastic force to push the blocking member 42 against the inner wall of the inner cavity 41 of the dial wheel. The pin seat 65 moves out of the inner core cavity 72 and pushes the self-locking core 62 to move. The self-locking core 62 and the dial wheel assembly 4 are locked, and the dial wheel assembly 4 cannot rotate, thus achieving self-locking.
[0055] like Figure 17 As shown, in the abnormal state of forcibly removing the outer lock cylinder 2, it is impossible to unlock from the outside of the safety lock cylinder, but it can be unlocked from the inside. By rotating the inner lock cylinder 7, the self-locking cylinder 62 is moved. The self-locking cylinder 62 and the dial assembly 4 are in the unlocked state. The self-locking cylinder 62 drives the pin seat 65 to retract into the inner cylinder cavity 72. The inner lock cylinder 7, the self-locking cylinder 62 and the dial assembly 4 rotate synchronously to unlock.
[0056] Example 2 This embodiment provides another type of security lock cylinder, which, in addition to having the structure of the security lock cylinder in embodiment 1, also includes a collar 48, as shown below. Figure 18 , Figure 19As shown, the collar 48 is sleeved on the outer periphery of the dial assembly 4 and connected to the housing 1. The outer end of the collar 48 is aligned with the outer end of the dial assembly 4. Specifically, the collar 48 is sleeved on the outer periphery of the dial component 51, with the outer end of the collar 48 aligned with the outer end of the dial component 51. The collar 48 does not affect the rotation of the dial component 51. The collar 48 is provided with a positioning hole 49. The housing 1 is provided with a positioning element (not shown in the figure) extending to the positioning hole 49. The positioning element can be a pin. The positioning element is inserted into the positioning hole 49 to fix the collar 48 in the housing 1. Specifically, the bottom wall of the first slot 12 is provided with a positioning element, and the collar 48 is stably connected in the first slot 12.
[0057] The housing 1 is installed on the door panel (not shown in the figure). When the door panel is damaged in the outer space and the outer lock cylinder is not removed, the outer end of the existing dial 51 may be exposed in the outer space. This allows the dial 51 to be rotated using a clamp or other rotating tool, resulting in the dial 51 being in an unlocked state and creating a safety hazard. By providing a collar 48 around the outer periphery of the dial 51, and aligning the collar 48 with the outer end of the dial 51, the dial 51 is effectively protected. When the outer end of the dial 51 is exposed in the outer space, the collar 48 prevents rotating tools from entering the dial 51, effectively preventing the tools from rotating the dial 51 and improving safety performance.
[0058] Example 3 This embodiment provides a modified structure of the safety lock cylinder, which, in addition to having the structure of the safety lock cylinder in Embodiment 1, also includes a retaining ring 28, such as... Figure 20 , Figure 21 As shown, the outer lock cylinder 2 is provided with a lock cylinder channel 25, specifically the outer core body 23 is provided with a lock cylinder channel 25. The lock cylinder channel 25 is provided through the outer lock cylinder 2 along the axial direction and communicates with the outer periphery of the outer lock cylinder 2, which is consistent with the arrangement of the lock cylinder channel 25 in Embodiment 1. The difference is that the fixing ring 28 is provided between the inner periphery of the dial assembly 4 and the outer periphery of the outer lock cylinder 2. Specifically, the fixing ring 28 is located between the inner periphery of the dial body 52 and the outer periphery of the outer core body 23. The fixing ring 28 is used to limit the distance that the outer component moves along the lock cylinder channel 25.
[0059] Here, "external component" refers to a key or other tool. To prevent the external component from penetrating too far into the lock cylinder channel 25 and damaging the internal components of the external lock cylinder 2, such as the external transmission component 22, a retaining ring 28 is provided to prevent the external component from excessively penetrating into the lock cylinder channel 25, thus effectively protecting the external lock cylinder 2. The third retaining ring 16 and the retaining ring 28 provide dual protection for the external lock cylinder 2. When the third retaining ring 16 fails due to the force of the external component, the retaining ring 28 can still prevent the external component from penetrating further into the lock cylinder channel 25.
[0060] For example, to further ensure the stability of the mounting position of the retaining ring 28, a retaining ring 35 is provided between the outer periphery of the outer core 23 and the inner periphery of the dial assembly 4. The retaining ring 35 limits the retaining ring 28 between itself and the inner wall of the dial assembly 4, preventing axial movement of the retaining ring 28. The retaining ring 35 communicates with the lock cylinder channel 25 and does not affect the passage of the outer component through the lock cylinder channel 25 at the location of the retaining ring 35. The setting position of the retaining ring 35 is adapted to the axial length of the retaining ring 28 and is also related to the distance that the outer component can penetrate along the lock cylinder channel 25.
[0061] Example 4 This embodiment provides another variation of the security lock cylinder structure, such as... Figure 22 As shown, the outer lock cylinder 2 is provided with a lock cylinder channel 25, specifically the outer core body 23 is provided with a lock cylinder channel 25. The lock cylinder channel 25 is provided through the outer lock cylinder 2 along the axial direction and is connected to the outer periphery of the outer lock cylinder 2. The difference from Embodiment 1 is that the end of the lock cylinder channel 25 on the outer periphery of the outer lock cylinder 2 facing the dial assembly 4 is a closed end 29. The closed end 29 is used to limit the distance that the outer component moves along the lock cylinder channel 25.
[0062] The location of the closed end 29 is related to the distance that the outer component can penetrate along the lock cylinder channel 25. Without using the retaining ring 28, the forming space of the lock cylinder channel 25 itself, that is, the closed end 29, can also serve to limit the outer component, reducing the complexity of assembling the outer lock cylinder 2 and the dial assembly 4.
[0063] Example 5 This embodiment provides a locking device, including a safety lock cylinder as described in the above embodiment, and a bolt (not shown in the figure). The dial portion 53 in the dial assembly 4 movably abuts against the bolt, and the dial assembly 4 rotates to cooperate with the bolt, thereby realizing the locking or unlocking of the locking device. The beneficial effects of the safety lock cylinder in the locking device will not be elaborated here.
[0064] In the description of this application, unless otherwise stated, directional terms such as "inner" and "outer" generally refer to the "inner" and "outer" relative to each other in the length direction when the corresponding parts are in use.
[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0067] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0068] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A security lock cylinder, characterized in that: The device includes a housing (1), in which an outer lock core (2), a dial assembly (4), and a self-locking structure (6) are sequentially arranged along the axial direction. The dial assembly (4) has a dial cavity (41), in which a blocking member (42) is accommodated. The dial cavity (41) has a first inner hole (43) and a second inner hole (44) with opposite sides along the axial direction. The outer lock core (2) includes a force transmission shaft (21), which movably passes through the first inner hole (43) and is connected to the blocking member (42). The self-locking structure (6) includes a pin (61), which movably passes through the second inner hole (44) and abuts against the blocking member (42). The pin (61) and the force transmission shaft (21) clamp the blocking member (42) so that the blocking member (42) is sealed in the first inner hole (43) or the second inner hole (44).
2. The security lock cylinder according to claim 1, characterized in that: The dial assembly (4) further includes a dial component (51), a dial core (54), and an inner drive component (55) arranged coaxially. The dial core (54) is inserted into the inner end of the dial component (51) to form the dial inner cavity (41). A first partition (56) is provided on the inner periphery of the dial component (51), and a second partition (57) is provided on the inner periphery of the dial core (54). The first partition (56) and the second partition (57) are located on opposite sides of the dial inner cavity (41). The inner drive component (55) is located in the dial inner cavity (41) and is connected to the dial core (54) and the dial component (51) respectively. A first inner hole (43) is formed on the inner drive component (55) and the first partition (56), and a second inner hole (44) is formed on the second partition (57).
3. The security lock cylinder according to claim 2, characterized in that: The blocking member (42) is located between the inner transmission member (55) and the second partition (57). The blocking member (42) has an arc-shaped outer wall (45). The first inner hole (43) and the second inner hole (44) respectively abut against the arc-shaped outer wall (45) to form a seal.
4. The security lock cylinder according to claim 1, characterized in that: The outer lock core (2) also includes an outer transmission component (22) and an outer core body (23). The inner circumference of the outer core body (23) is inserted into the outer transmission component (22) and rotates synchronously. The dial assembly (4) is sleeved on the outer circumference of the outer core body (23). The outer transmission component (22) moves axially and is movably engaged with the dial assembly (4).
5. The security lock cylinder according to claim 4, characterized in that: The outer lock core (2) also includes a force transmission seat (31). The outer transmission component (22) is provided with an outer transmission groove (32). The force transmission seat (31) is elastically disposed in the outer transmission groove (32). The force transmission shaft (21) passes through the outer transmission groove (32) and is connected to the force transmission seat (31). A bushing (26) is provided on the force transmission shaft (21). The bushing (26) is located between the outer transmission component (22) and the blocking component (42). The bushing (26) moves against the outer transmission component (22).
6. The security lock cylinder according to claim 1, characterized in that: The self-locking structure (6) further includes a self-locking core (62) that moves axially. The self-locking core (62) is inserted into and rotates synchronously with the dial assembly (4). A radially extending limiting member (11) is provided on the inner circumference of the housing (1). When the self-locking core (62) abuts against the limiting member (11), the self-locking core (62) locks with the dial assembly (4). When the self-locking core (62) separates from the limiting member (11), the self-locking core (62) unlocks with the dial assembly (4).
7. The security lock cylinder according to claim 6, characterized in that: The safety lock cylinder also includes an inner lock cylinder (7), which is inserted into the inner end of the self-locking cylinder (62). A cam structure (74) is provided between the outer periphery of the inner lock cylinder (7) and the inner periphery of the self-locking cylinder (62) so that the rotational motion of the inner lock cylinder (7) is converted into the linear motion of the self-locking cylinder (62).
8. The security lock cylinder according to claim 7, characterized in that: The inner end of the self-locking core (62) is provided with a snap-fit part (63), and the outer periphery of the inner lock core (7) is provided with a mating part (71). The snap-fit part (63) and the mating part (71) are movably snap-fitted together.
9. The security lock cylinder according to claim 7, characterized in that: The inner locking core (7) is provided with an inner core cavity (72), and a pin seat (65) is sleeved on the pin (61). The end of the pin (61) facing the blocking member (42) is provided with a beveled end (64). The pin (61) is elastically disposed in the inner core cavity (72) and penetrates the self-locking core (62). The pin seat (65) moves against the inner end of the self-locking core (62). When the force transmission shaft (21) separates from the blocking member (42), the pin seat (65) pushes the self-locking core (62) to lock with the dial assembly (4), and the beveled end (64) pushes the blocking member (42) against the inner wall of the dial inner cavity (41).
10. The security lock cylinder according to claim 1, characterized in that: The safety lock cylinder also includes a collar (48), which is sleeved on the outer periphery of the dial assembly (4) and connected to the housing (1). The outer end of the collar (48) is aligned with the outer end of the dial assembly (4).
11. The security lock cylinder according to claim 1, characterized in that: The safety lock cylinder also includes a fixing ring (28). The outer lock cylinder (2) is provided with a lock cylinder channel (25) that runs through it along its axial direction. The lock cylinder channel (25) communicates with the outer periphery of the outer lock cylinder (2). The fixing ring (28) is located between the inner periphery of the dial assembly (4) and the outer periphery of the outer lock cylinder (2). The fixing ring (28) is used to limit the distance that the outer component moves along the lock cylinder channel (25).
12. The security lock cylinder according to claim 1, characterized in that: The outer lock cylinder (2) is provided with a lock cylinder channel (25) that runs through it along its axial direction. The lock cylinder channel (25) communicates with the outer periphery of the outer lock cylinder (2). The end of the lock cylinder channel (25) on the outer periphery of the outer lock cylinder (2) facing the dial assembly (4) is a closed end (29). The closed end (29) is used to limit the distance that the outer component can move along the lock cylinder channel (25).
13. A locking device, characterized in that: Includes the security lock cylinder as described in any one of claims 1-12.