High security hammer lock

Abstract

The utility model relates to the technical field of lockset, and disclose a high security hammer lock, including the lock body, the inside rotation of lock body is connected with the lock cylinder, the lock cylinder right side bottom surface is established with the cylindrical slot, the cylindrical slot with the limit rod each other inserts, the limit rod is installed with the fifth spring away from the lock cylinder side, the inner wall sliding connection of slide rail has the fifth spring and limit rod, the bottom surface fixed connection of limit rod has the convex block, the bottom sleeve joint of convex block has the cover, the top surface symmetry of cover installs two fourth springs, the bottom surface of slide rail is established with the slot away from the lock cylinder side, the cover outer wall with the slot inner wall each other sliding connection, increase a lock opening mode, and at the same time, the increased lock opening mode is hidden, plays multilayer theftproof effect, avoids the problem that the key loss is acquired by others and leads to the property loss and privacy disclosure.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically a high-security hammer lock. Background Technology

[0002] Hammer locks are named for their cylindrical, hammer-like shape. They are a type of straight-open padlock and are a typical representative of traditional mechanical locks. Through material optimization and structural design, hammer locks have achieved high tensile strength and low cost, and are widely used in civilian and industrial applications.

[0003] Traditional hammer locks often use a single-row or double-row pin tumbler design. If the key is lost and found by someone else, and the lock cylinder is not replaced in time, it may be used for illegal unlocking. Alternatively, if the spare key is stored in a public area (such as under the doormat or in the mailbox) or not strictly controlled, it may also be obtained and used by others, resulting in property loss or privacy leaks. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a highly secure hammer lock. The unlocking method with the addition of a hidden pry bar offers the advantage of multi-layered protection, solving the problems of property loss and privacy leaks caused by lost keys being obtained by others.

[0006] Technical solution

[0007] To achieve the above-mentioned unlocking method of adding a hidden paddle to provide multi-layer protection for the hammer lock, this utility model provides the following technical solution: It includes a lock body, with a lock cylinder rotatably connected inside the lock body. A cylindrical groove is formed on the bottom right side surface of the lock cylinder, and the cylindrical groove is inserted into a limiting rod. A fifth spring is installed on the side of the limiting rod away from the lock cylinder. The inner wall of the slide rail is slidably connected to the fifth spring and the limiting rod. A convex block is fixedly connected to the bottom surface of the limiting rod. A cover plate is sleeved on the bottom of the convex block. Two fourth springs are axially symmetrically installed on the top surface of the cover plate. A groove is formed on the bottom surface of the slide rail away from the lock cylinder, and the outer wall of the cover plate and the inner wall of the groove are slidably connected to each other.

[0008] As a further embodiment of this utility model: a U-shaped latch is inserted into the top inner side of the lock body; two buckles are symmetrically opened on the bottom surface of the U-shaped latch; a limiting groove is opened at the bottom of the end of the U-shaped latch away from the limiting rod; a third spring is installed on the bottom surface of one end of the U-shaped latch; a locking rod is inserted into the inner wall of each buckle; a semi-cylindrical groove is opened in the middle of each locking rod; a first spring is installed on the inner wall of each semi-cylindrical groove; the end of the locking rod that contacts the buckle is at an angle; the inner wall of the locking rod is in contact with the top of the drive rod; the bottom surface of the drive rod is fixedly connected to the lock cylinder; a tumbler slot is opened on the left and right sides of the lock cylinder; a lower tumbler is inserted into the inner wall of each tumbler slot; an upper tumbler is movably connected to the side of each lower tumbler away from the lock cylinder; a second spring is installed on the end of each upper tumbler away from the lock cylinder; and a lock hole is installed at the center of the bottom surface of the lock body.

[0009] As a further improvement of this utility model, the number of the ball slots is twelve.

[0010] As a further improvement of this utility model: the two ends of the U-shaped locking tongue have different lengths, and a third spring is installed at the bottom of the longer end of the U-shaped locking tongue.

[0011] As a further improvement of this utility model: each of the lower pins has a different length, and when the key is inserted into the lock cylinder, the teeth of the key push the lower pins outward to the connection between the lock cylinder and the lock body.

[0012] As a further improvement of this utility model, the limiting groove engages with the end of the right-side locking rod away from the lock cylinder during the upward movement.

[0013] Beneficial effects

[0014] Compared with the prior art, this utility model provides a highly secure hammer lock, which has the following advantages:

[0015] This highly secure hammer lock unlocks by pushing the cover plate upwards, exposing the convex block, and then moving the convex block to the left, causing the cover plate to move into the slot. Simultaneously, the convex block moves the limiting rod away from the cylindrical slot, unlocking the lock. To lock, after releasing the convex block, the fifth spring pushes the limiting rod into the cylindrical slot, locking the lock cylinder. The convex block and cover plate move to their original positions along with the limiting rod, and the fourth spring pushes the cover plate flush with the bottom of the lock body. This adds an extra unlocking method while concealing it, preventing the loss of keys and potential privacy breaches caused by unauthorized access. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of the high-security hammer lock of this utility model;

[0017] Figure 2 This is a top view of the lock body structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the slide rail structure of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the lock body structure of this utility model.

[0020] In the diagram: 1. Lock body; 2. U-shaped bolt; 3. Buckle; 4. Locking rod; 5. First spring; 6. Second spring; 7. Limiting groove; 8. Upper pin; 9. Lower pin; 10. Third spring; 11. Drive rod; 12. Lock cylinder; 13. Slide rail; 14. Cover plate; 15. Fourth spring; 16. Convex block; 17. Fifth spring; 18. Limiting rod; 19. Cylindrical groove; 20. Groove; 21. Pin slot; 22. Lock hole; 23. Semi-cylindrical groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-2 A high-security hammer lock includes a lock body 1. A U-shaped latch 2 is inserted into the top of the inner wall of the lock body 1. Two latches 3 are symmetrically formed on the bottom surface of the U-shaped latch 2. A locking rod 4 is inserted into each latch 3. The end of each locking rod 4 that contacts the latch 3 is at an angle. A semi-cylindrical groove 23 is formed in the middle of the locking rod 4. A first spring 5 is installed in each semi-cylindrical groove 23. The two ends of the U-shaped latch 2 are of different lengths. A limiting groove 7 is formed at the bottom of the longer end of the U-shaped latch 2. A third spring 10 is installed on the bottom surface of the longer end of the U-shaped latch 2. A lock cylinder 12 is rotatably connected to the inner wall of the lock body 1. The lock cylinder 12 has six pin slots 21 on its left and right sides respectively. The inner wall of each pin slot 21 is inserted into the lower pin 9. Each lower pin 9 is movably connected to an upper pin 8 at the end near the outer wall of the lock cylinder 12. A second spring 6 is installed at the end of each upper pin 8 away from the lock cylinder 12. Two drive rods 11 are symmetrically fixed to the top surface of the lock cylinder 12. A lock hole 22 is installed at the center of the bottom surface of the lock body 1. Each lower pin 9 has a different length. The original key is required to push the lower pins 9 of different lengths to a position flush with the outer wall surface of the lock cylinder 12, thereby achieving the anti-theft function.

[0023] Please refer to Figure 3-4 A high-security hammer lock has a cover plate 14 engaged at the bottom of the lock hole 22 on the side away from the third spring 10. The inner wall of the cover plate 14 is sleeved with a convex block 16. Two fourth springs 15 are symmetrically installed on the top surface of the cover plate 14. A limit rod 18 is fixedly connected to the top surface of the convex block 16. The fourth spring 15 is installed at the end of the limit rod 18 away from the lock cylinder 12. A cylindrical slot 19 is opened at the bottom of the outer wall of the lock cylinder 12. The cylindrical slot 19 is inserted into the other end of the limit rod 18. This prevents the lock cylinder 12 from rotating. A slide rail 13 is fixedly installed on the left side inside the lock body 1. The limit rod 18 slides inside the slide rail 13 via the fifth spring 17. A groove 20 is opened on the bottom surface of the slide rail 13 away from the lock cylinder 12. The cover plate 14 slides on the inner wall of the groove 20. The bottom surface of the cover plate 14 and the bottom surface of the convex block 16 are the same color as the bottom surface of the lock body 1, thus adding an unlocking method. At the same time, the added unlocking method is hidden, playing a multi-layer anti-theft role.

[0024] Working principle: First, insert the key into the keyhole 22. The teeth of the key will push the lower pins 9, making the connection between each lower pin 9 and the upper pin 8 a straight line with the connection between the lock cylinder 12 and the lock body 1. Then, push the cover plate 14 upward, exposing the convex block 16. Push the convex block 16 to the left while pressing against the cover plate 14. The cover plate 14 will move into the slot 20. When the convex block 16 moves, it will drive the limiting rod 18 to move within the slide rail 13. After the limiting rod 18 is pulled out from the slot of the cylindrical groove 19, rotate the key. The key will then drive the lock... When the cylinder 12 rotates together, the upper pin 8 will be locked outside the cylinder 12. When the cylinder 12 rotates, it drives the drive rod 11 to rotate. During the rotation, the drive rod 11 contacts the locking rod 4. The drive rod 11 drives the locking rod 4 to move inward, causing the locking rod 4 to move out of the latch. The third spring 10 generates induction, causing the U-shaped bolt 2 to move upward. During the movement, the key can be released. After the key is released, the first spring 5 will push the locking rod 4 outward. When the U-shaped bolt 2 moves upward, one end of the locking rod 4 at an angle will extend into the limiting groove 7, locking the U-shaped bolt and preventing it from moving further. At this point, the lock is opened.

[0025] After attaching the hammer lock to the lock body, remove the key and push the U-shaped latch 2 back into the lock body 1. The end of the locking rod 4 that contacts the U-shaped latch 2 is at an angle. As it is pushed downwards, the locking rod 4 will move towards the center of the lock body 1 until the latch 3 is flush with the locking rod 4. The first spring 5 will generate a pushing force, causing the locking rod 4 to lock in the latch 3. At this point, the U-shaped latch 2 is locked. As the locking rod 4 moves, it will drive the drive rod 11 and the lock cylinder 12 to rotate together. The pin slot 21 is aligned with the upper pin 8. The second spring 6 pushes the upper pin 8 into the pin slot 21 to lock the lock cylinder 12. At the same time, the fifth spring 17 pushes the limiting rod 18 into the cylindrical slot 19. As the limiting rod 18 moves in the slide rail 13, it drives the convex block 16 and the cover plate 14 to move together. After the cover plate 14 moves away from the slot 20, the fourth spring 15 pushes the cover plate 14 to be flush with the bottom surface of the lock body 1, thus completing the locking.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-security hammer lock, comprising a lock body (1), characterized in that: The lock body (1) is rotatably connected to a lock cylinder (12). A cylindrical slot (19) is provided on the bottom right side of the lock cylinder (12). The cylindrical slot (19) is inserted into a limiting rod (18). A fifth spring (17) is installed on the side of the limiting rod (18) away from the lock cylinder (12). A slide rail (13) is provided inside the lock body (1). The limiting rod (18) slides on the inner wall of the slide rail (13). A convex block (16) is fixedly connected to the bottom surface of the limiting rod (18). A cover plate (14) is sleeved on the bottom of the convex block (16). Two fourth springs (15) are symmetrically installed on the top surface of the cover plate (14). A slot (20) is provided on the bottom surface of the slide rail (13) away from the lock cylinder (12). The outer wall of the cover plate (14) and the inner wall of the slot (20) are slidably connected to each other.

2. The high-security hammer lock according to claim 1, characterized in that: A U-shaped latch (2) is inserted into the top inner side of the lock body. Two buckles (3) are symmetrically opened on the bottom surface of the U-shaped latch (2). A limit groove (7) is opened at the bottom of the end of the U-shaped latch (2) away from the limit rod (18). A third spring (10) is installed on the bottom surface of one end of the U-shaped latch (2). A locking rod (4) is inserted into the inner wall of each buckle (3). A semi-cylindrical slot (23) is opened in the middle of each locking rod (4). A first spring (5) is installed on the inner wall of each semi-cylindrical slot (23). The locking rod (4) contacts the buckle (3). The end is angled, the inner wall of the locking rod (4) is in contact with the top of the driving rod (11), the bottom surface of the driving rod (11) is fixedly connected to the lock cylinder (12), the left and right sides of the lock cylinder (12) are respectively provided with tumbler slots (21), the inner wall of each tumbler slot (21) is inserted into the lower tumbler (9), the side of each lower tumbler (9) away from the lock cylinder (12) is movably connected to the upper tumbler (8), the end of each upper tumbler (8) away from the lock cylinder (12) is equipped with a second spring (6), and the center of the bottom surface of the lock body (1) is equipped with a lock hole (22).

3. A high-security hammer lock according to claim 2, characterized in that: The number of the ball slots (21) is twelve.

4. A high-security hammer lock according to claim 2, characterized in that: The two ends of the U-shaped latch (2) are of different lengths, and a third spring (10) is installed at the bottom of the longer end of the U-shaped latch (2).

5. A high-security hammer lock according to claim 2, characterized in that: Each of the lower pins (9) has a different length. When the key is inserted into the lock cylinder (12), the teeth of the key push the lower pins (9) outward to the connection between the lock cylinder (12) and the lock body (1).

6. A high-security hammer lock according to claim 2, characterized in that: The limiting groove (7) engages with the end of the right-side locking rod (4) away from the lock cylinder (12) during the upward movement.

Images