Technical unlocking prevention structure of pin tumbler lock
By designing irregularly shaped inner and outer pin tumblers and pin holes in the pin tumbler lock, and combining them with a locking switch, the problem of existing door locks being easily damaged is solved, achieving a high level of security against technical unlocking.
Patent Information
- Application Number
- CN202520314244.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing door locks are easily damaged by specific tools or techniques, resulting in insufficient security. Smart door locks are easily imitated or opened by jammers.
Design a technical unlocking structure for a pin tumbler lock. By combining inner and outer pins and pin holes with different structures, a locking switch is set to ensure that the lock cylinder and lock body cannot be rotated without a matching key.
It effectively prevents technical unlocking, improves the security of pin tumbler locks, and ensures that the lock cylinder and lock body are always locked and cannot be opened without a matching key.
Smart Images
Figure CN223880926U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of anti-theft lock, specifically relates to a lock structure is prevented to technology of pin tumbler lock. BACKGROUND
[0002] With the quality improvement of modern people's living conditions, people's demand for home safety will also improve, which requires a door lock protection, and the traditional door lock still has some disadvantages, such as being able to be destroyed and opened through some special tools and skills, and the intelligent door lock, such as fingerprint and face recognition, can be opened through the mold or special jammer.
[0003] In order to solve the problem of low safety of the door lock in the prior art, the structure of the lock needs to be improved, so as to solve the current technical problem. SUMMARY
[0004] The utility model discloses a kind of lock structure is prevented to technology of pin tumbler lock, and it is extremely easy to lock cylinder directly with lock body by technical means unlocking, cannot rotate;In addition, by setting deadlocking switch, unless the key of adaptation is inserted, otherwise deadlocking switch will lock cylinder and lock body dead.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a kind of lock structure is prevented to technology of pin tumbler lock, comprising:
[0006] Outer pin hole is set to lock body side wall, outer pin and spring are movably arranged in the outer pin hole, and the outer pin is close to the spring;
[0007] Inner pin hole is set to cylinder side wall, inner pin is movably arranged in the inner pin hole, and the inner pin is adjustably pressed to the outer pin, so that the outer pin and spring fall into or separate from the inner pin hole;And
[0008] Deadlocking switch is movably connected to the side wall of the cylinder.
[0009] To better realize the utility model, the outer pin is conical structure, and circular bottom surface is towards inner pin, spring sleeve is connected to the side of the outer pin, and the bottom surface radius of the outer pin is greater than the inner circle diameter of the spring.
[0010] To better realize the utility model, the pressing surface radius of the inner pin and the outer pin is less than the bottom surface radius of the outer pin.
[0011] To better realize the utility model, the outer pin is elastically deformed.
[0012] The inner pin is a combined structure of a cylinder and a hemisphere, and the diameter of the hemisphere part is smaller than the diameter of the cylinder part.
[0013] To better achieve the utility model, the inner pin hole is composed of an inner section hole and an outer section hole, the outer section hole is a cylindrical hole, and the diameter is equal to the diameter of the outer pin hole; the diameter of the inner section hole away from one end of the outer section hole is smaller than the diameter of the cylinder part of the inner pin, and the diameter of the rest of the inner section hole is equal to the diameter of the cylinder part of the inner pin.
[0014] To better achieve the utility model, the lock switch comprises a locking pin and a rotating shaft, the lock cylinder and the lock body have a first notch and a second notch for the locking pin to move, and the locking pin is rotatably connected in the first notch through the rotating shaft.
[0015] To better achieve the utility model, the locking pin is an L-shaped structure, and the center of gravity of the locking pin is located between the rotating shaft and the corner of the locking pin.
[0016] Advantages:
[0017] The utility model discloses a locking pin and an outer pin of different shapes are arranged, and the inner pin hole and the outer pin hole of different shapes jointly act, if someone adopts technical unlocking, the outer pin is directly clamped in the spring, or the inner pin is clamped between the inner pin hole and the outer pin hole, so that the lock cylinder is directly locked with the lock body, and cannot be rotated, even if other parts of the pin lock are unlocked, the pin lock still cannot be opened, thereby the technical unlocking ability of the pin lock is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the internal structure diagram under the condition that the key is not inserted.
[0019] Figure 2 It is the internal structure diagram under the condition that the key is inserted.
[0020] Figure 3 It is the enlarged structure diagram of A.
[0021] Figure 4 It is the internal structure diagram under the condition that the lock is locked in example 1 and example 3.
[0022] Figure 5 It is the enlarged structure diagram of B.
[0023] Figure 6 It is the internal structure diagram under the condition that the lock is locked in example 2.
[0024] Figure 7 This is a magnified view of the structure at point C.
[0025] In the diagram: 1. Outer pin hole; 2. Outer pin; 3. Spring; 4. Inner pin hole; 41. Outer section hole; 42. Inner section hole; 5. Inner pin; 51. Cylinder; 52. Hemisphere; 6. Locking switch; 61. Locking pin; 62. Shaft; 63. First notch; 64. Second notch; 7. Lock body; 8. Lock cylinder; 9. Key; 10. Lock tongue. Detailed Implementation
[0026] Example 1
[0027] like Figures 1 to 5 As shown, a technical unlocking structure for a pin tumbler lock includes an outer pin hole 1 disposed on the side wall of the lock body 7. An outer pin 2 and a spring 3 are movably disposed within the outer pin hole 1. The outer pin 2 abuts against the spring 3. The outer pin 2 has a conical structure with its circular bottom surface facing the inner pin 5. The spring 3 is sleeved on the side of the outer pin 2. The radius of the bottom surface of the outer pin 2 is larger than the inner diameter of the spring 3. The radius of the contact surface between the inner pin 5 and the outer pin 2 is smaller than the radius of the bottom surface of the outer pin 2. The outer pin 2 is elastically deformable.
[0028] The anti-technical unlocking structure also includes an inner pin hole 4 located on the side wall of the lock cylinder 8. An inner pin 5 is movably provided in the inner pin hole 4. The inner pin 5 is adjustable to press against the outer pin 2 so that the outer pin 2 and the spring 3 fall into or out of the inner pin hole 4.
[0029] The working principle of this embodiment can be summarized as follows:
[0030] like Figure 1 As shown, when the key 9 is not inserted, under the action of the spring 3, the inner pin 5 is pressed into the inner pin hole 4 by the outer pin 2. Part of the outer pin 2 is in the outer pin hole 1 and part is in the inner pin hole 4. At this time, the lock cylinder 8 is stuck and cannot rotate.
[0031] like Figure 2 and Figure 3 As shown, after key 9 is inserted, because key 9 has a matching pin slot, it lifts the inner pin 5. At this time, the pressing surfaces of the inner pin 5 and the outer pin 2 are flush with the interface between the lock cylinder 8 and the lock body 7. At this time, the lock cylinder 8 can be rotated, thereby driving the bolt 10 to rotate to complete the unlocking.
[0032] Because the outer pin 2 has the ability of elastic deformation, when the key 9 is inserted, the normal pressure provided by the key 9 can only normally lift the outer pin 2 and the spring 3 to achieve the effect that the lock cylinder 8 can rotate relative to the lock body 7, however, if someone uses technical unlocking, he will inevitably use more force, which will inevitably cause the outer pin 2 to deform, and furthermore, the spring 3 also has a certain deformation ability, and the spring 3 has a certain gap between each coil, as shown in Figure 4 and Figure 5 , the outer pin 2 will be directly lifted into the spring 3 and clamped into the gap between the coils of the spring 3, because the pressing surface radius of the inner pin 5 is smaller than the bottom surface radius of the outer pin 2, the inner pin 5 cannot press the spring 3, at this time the outer pin 2 is clamped in the spring 3, the spring 3 cannot be lifted, and the lock cylinder 8 is locked, that is, the key 9 cannot be used to open it.
[0033] Embodiment 2
[0034] As shown in Figures 1 to 3 , Figure 6 and Figure 7 , a technical anti-unlocking structure of a pin tumbler lock, which is different from embodiment 1, is that the inner pin 5 is a combination structure of a cylindrical body 51 and a hemispherical body 52, and the diameter of the hemispherical body 52 part is smaller than the diameter of the cylindrical body 51 part; the inner pin hole 4 is composed of an inner section hole 42 and an outer section hole 41, the outer section hole 41 is a cylindrical hole, and the diameter is equal to the diameter of the outer pin hole 1; the diameter of the end of the inner section hole 42 away from the outer section hole 41 is smaller than the diameter of the cylindrical body 51 part of the inner pin 5, and the diameter of the rest of the inner section hole 42 is equal to the diameter of the cylindrical body 51 part of the inner pin 5.
[0035] The working principle of this embodiment is summarized as follows:
[0036] As shown in Figure 2 and Figure 3 , under normal circumstances, after inserting the matched key 9, the inner pin 5 is lifted due to the matched pin groove of the key 9, at this time the pressing surface of the inner pin 5 and the outer pin 2 is flush with the interface between the lock cylinder 8 and the lock body 7, and the cylindrical body 51 part of the inner pin 5 still has a part in the inner section hole 42, when the key 9 is removed, the inner pin 5 can naturally fall under the action of the spring 3, and restore to Figure 1 , to form a stop to the lock cylinder 8.
[0037] But if someone uses technical unlocking, as shown in Figure 6 and Figure 7As shown, the inner pin 5 will be forced upward, and due to the diameter of the hemisphere 52 part being smaller than that of the cylinder 51 part, the inner pin 5 has a stepped structure, when the inner pin 5 moves upward to the cylinder part completely in the outer segment hole 41, the inner pin 5 can be pressed against the bottom surface of the outer segment hole 41 under the action of the spring 3, and cannot fall back to the original position Figure 1 As shown, and part of the inner pin 5 is in the outer pin hole 1 and part is in the inner pin hole 4, the lock cylinder 8 is locked, and the lock cylinder 8 cannot be rotated, so the bolt 10 cannot be rotated to achieve unlocking.
[0038] Embodiment 3
[0039] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 6 , a technical anti-unlocking structure of a pin tumbler lock, which is different from embodiment 1, further comprises a locking switch 6 movably connected to the side wall of the lock cylinder 8, the locking switch 6 comprises a latch 61 and a rotating shaft 62, the lock cylinder 8 and the lock body 7 have a first notch 63 and a second notch 64 for the movement of the latch 61, and the latch 61 is rotatably connected to the first notch 63 through the rotating shaft 62; the latch 61 has an L-shaped structure, and the center of gravity of the latch 61 is located between the rotating shaft 62 and the corner of the latch 61.
[0040] The working principle of this embodiment is summarized as follows:
[0041] As shown in Figure 1 and Figure 6 , under normal circumstances, because the center of gravity of the latch 61 is located between the rotating shaft 62 and the corner of the latch 61, the end of the latch 61 away from the bolt 10 will be sheathed in the second notch 64 in the lock body 7, at this time the latch 61 will lock the lock cylinder 8, and the lock cylinder 8 cannot be rotated.
[0042] As shown in Figure 2 , when the appropriate key 9 is inserted, the end of the key 9 will push against the latch 61, so that the end of the latch 61 away from the bolt 10 is rotated into the first notch 63, and the lock cylinder 8 and the lock body 7 are not locked, and the lock cylinder 8 can be rotated, so that the bolt 10 can be rotated to achieve unlocking.
[0043] But if someone uses technical unlocking, the tool for unlocking is too short to completely rotate the end of the latch 61 away from the bolt 10 into the first notch 63, and the latch 61 is still in the state shown in Figure 1 and Figure 6 , the lock cylinder 8 is still locked and cannot be rotated; on the contrary, if the tool for unlocking is too long, it will rotate the end of the latch 61 close to the bolt 10 into the first notch 63, and the latch 61 is in the state shown in Figure 4In the illustrated state, the lock cylinder 8 is still locked and cannot be turned.
[0044] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A technical pick resistant structure for a pin tumbler lock, comprising: The utility model relates to a lock, which comprises: an outer pin hole (1) arranged on the side wall of a lock body (7), wherein an outer pin (2) and a spring (3) are movably arranged in the outer pin hole (1), and the outer pin (2) is in close contact with the spring (3); an inner pin hole (4) arranged on the side wall of a lock cylinder (8), wherein an inner pin (5) is movably arranged in the inner pin hole (4), and the inner pin (5) is in adjustable contact with the outer pin (2) so that the outer pin (2) and the spring (3) fall into or out of the inner pin hole (4); and a locking switch (6) movably connected to the side wall of the lock cylinder (8).
2. A technical pick resistant structure for a pin tumbler lock as defined in claim 1, wherein The outer pin (2) is in a conical structure, and the circular bottom surface faces the inner pin (5); the spring (3) is sleeved on the side surface of the outer pin (2); and the radius of the bottom surface of the outer pin (2) is greater than the inner diameter of the spring (3).
3. A technical pick resistant structure for a pin tumbler lock as defined in claim 2, wherein The radius of the contact surface of the inner pin (5) and the outer pin (2) is less than the radius of the bottom surface of the outer pin (2).
4. The anti-picking structure of a pin tumbler lock according to claim 1, wherein, The outer pin (2) is elastically deformed.
5. The anti-picking structure of a pin tumbler lock according to claim 1, wherein, The inner pin (5) is in a combined structure of a cylinder (51) and a hemisphere (52), and the diameter of the hemisphere (52) is less than that of the cylinder (51).
6. A technical pick resistant structure for a pin tumbler lock as defined in claim 5, wherein The inner pin hole (4) is composed of an inner section hole (42) and an outer section hole (41), the outer section hole (41) is a cylindrical hole, and the diameter of the outer section hole (41) is equal to that of the outer pin hole (1); the diameter of the inner section hole (42) at the end away from the outer section hole (41) is less than that of the cylinder (51) of the inner pin (5), and the diameter of the rest of the inner section hole (42) is equal to that of the cylinder (51) of the inner pin (5).
7. A technical pick resistant structure for a pin tumbler lock as defined in claim 1 wherein, The locking switch (6) comprises a latch (61) and a rotating shaft (62), the lock cylinder (8) and the lock body (7) have a first gap (63) and a second gap (64) for the movement of the latch (61), and the latch (61) is rotatably connected to the first gap (63) through the rotating shaft (62).
8. A technical pick resistant structure for a pin tumbler lock as defined in claim 7, wherein The latch (61) is in an L-shaped structure, and the center of gravity of the latch (61) is located between the rotating shaft (62) and the corner of the latch (61).