Coded lock capable of preventing messy codes and error codes

Abstract

The utility model discloses a messy code and wrong code prevention coded lock which comprises a lock body, an installation cavity and a sliding cavity are formed in the lock body respectively, the installation cavity is located on the upper portion of the sliding cavity, a code wheel and a code adjusting wheel are arranged in the installation cavity and the sliding cavity respectively, and the code wheel and the code adjusting wheel are connected in a clamped mode and rotate along with the code wheel and the code adjusting wheel. Two symmetrical limiting plates are vertically and fixedly connected to the interior of the lock body, limiting strip-shaped holes are formed in the two limiting plates, a moving plate is slidably connected to the interior of the sliding cavity, and the code adjusting wheel is arranged on the upper portion of the moving plate. Through stable clamping linkage of the password wheel and the code adjusting wheel and related parts, accurate password input, normal opening and closing functions, safety and convenience in normal use are guaranteed; during special operation such as password resetting or maintenance, the connection relation is simply, conveniently and rapidly changed by means of the adjusting mechanism, and the rotating disc groove is matched with the extrusion plate to prevent interference of accidental factors so as to guarantee operation accuracy and subsequent use stability, and the maintenance cost and the use risk are reduced.

Description

Technical Field

[0001] This utility model relates to the field of combination lock technology, and in particular to a combination lock that prevents scrambled or incorrect codes. Background Art

[0002] In today's society, combination locks are widely used in various scenarios, such as homes, offices, and businesses, to protect the security of personal property and important information. However, traditional combination locks often face problems such as scrambled codes and incorrect codes during use, which may prevent users from unlocking the lock and cause great inconvenience.

[0003] After prolonged use, due to wear and tear on the internal mechanical structure, vibration, or external environmental factors, the fit between the combination wheel and the adjustment wheel of a combination lock may become misaligned, affecting the accuracy of password input and resulting in garbled or incorrect codes. Moreover, in some special circumstances, such as when a user forgets their password or needs to repair or reset the lock, the operation of traditional combination locks is often quite complex, requiring professional tools or technicians. This not only increases the user's operating costs but also reduces the efficiency of using the combination lock.

[0004] Therefore, we propose a password lock that prevents garbled and incorrect characters. Utility Model Content

[0005] The main purpose of this utility model is to provide a combination lock that prevents scrambled and incorrect codes. This prevents the combination lock from producing scrambled or incorrect codes due to wear and vibration of the internal mechanical structure or external environmental factors causing misalignment between the combination wheel and the adjustment wheel. It also addresses issues such as increased costs and reduced efficiency during special operations (e.g., forgetting the password, maintenance, or password reset) due to the need for specialized tools or personnel. This invention improves the accuracy, convenience, and stability of password input, reduces usage risks and maintenance costs, and effectively solves the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An anti-scrambled and incorrect code combination lock includes a lock body. The lock body has an internal mounting cavity and a sliding cavity, with the mounting cavity located above the sliding cavity. A combination wheel and a code-changing wheel are respectively installed inside the mounting cavity and the sliding cavity, and the combination wheel and code-changing wheel are engaged and rotate together. Two symmetrical limiting plates are vertically fixedly connected inside the lock body. Each limiting plate has a limiting strip hole. A movable plate is slidably connected inside the sliding cavity. The code-changing wheel is located on the upper part of the movable plate. A sliding groove is formed on the side of each limiting plate away from the sliding cavity. A slider is slidably connected inside the sliding groove. Multiple first springs are fixedly connected to the slider at the bottom of the sliding groove. Both ends of the movable plate pass through the limiting strip holes and are fixedly connected to the opposite side of the two sliders. A wedge-shaped block is installed inside the sliding groove. The outer wall of the top of the slider has an inclined surface adapted to the wedge-shaped block.

[0008] Both of the two wedge-shaped blocks are fixedly connected to threaded sleeves on opposite sides. Both ends of the lock body are provided with protective frames and protective shells fastened to one side of the protective frames. An adjustment mechanism that cooperates with the threaded sleeves is provided inside the protective frames. The adjustment mechanism includes a fixed sleeve and a threaded rod rotatably connected inside the fixed sleeve. The outer wall of one end of the threaded rod is threadedly connected to the inner wall of the threaded sleeve. A turntable is fixedly connected to the end of the threaded rod away from the threaded sleeve. Multiple grooves are arranged in a circular array on the turntable. An extrusion plate that matches the grooves is connected to the inside of the protective frame through a push assembly.

[0009] By adopting the above technical solution, the combination wheel and the adjustment wheel are engaged and can rotate together. During the password setting stage, the user can rotate the combination wheel to drive the adjustment wheel, adjust the combination wheel to the desired password number position, and the adjustment wheel will also move to the corresponding position to complete the password setting. During normal unlocking, when the correct password is entered, the combination wheel rotates to the correct position, driving the adjustment wheel to the corresponding position, so that the lock can be opened normally.

[0010] The code wheel is located on the upper part of the moving plate. The two ends of the moving plate pass through the limiting strip holes and are fixedly connected to the slider. The slider slides in the groove and is connected to the bottom of the first spring. Under normal circumstances, the first spring provides an upward elastic force to keep the slider in a stable position, thereby ensuring the stability of the position of the moving plate and the code wheel, and ensuring the normal linkage between the code wheel and the code wheel, so as to realize the accurate input of the code and the normal opening or closing of the lock.

[0011] When special operations such as resetting the password or maintenance are required, the wedge block is operated by adjusting the mechanism. Rotating the turntable drives the threaded rod to rotate. Since the threaded rod is threadedly connected to the threaded sleeve, the threaded sleeve will move axially as the threaded rod rotates. The threaded sleeve is fixedly connected to the wedge block, so the wedge block will also move accordingly. The inclined surface of the wedge block and the inclined surface at the top of the slider are matched. When the wedge block moves downward, its inclined surface will squeeze the inclined surface of the slider, causing the slider to overcome the elastic force of the first spring and slide downward. The downward sliding of the slider will drive the moving plate to move downward, thereby changing the connection relationship between the code wheel and the password wheel.

[0012] The turntable has multiple grooves, and the inside of the protective frame is connected to an extrusion plate via a push assembly. When the turntable rotates, the interaction between the grooves and the extrusion plate pushes the extrusion plate toward the push assembly to contract.

[0013] Furthermore, the actuating component includes strip plates fixed to both ends of the lock body, and multiple telescopic rods are fixedly connected to the top of the strip plates.

[0014] By adopting the above technical solution, since the telescopic rod is fixed to the strip plate, the strip plate plays a supporting role.

[0015] Furthermore, the other end of each of the telescopic rods is fixed to the extrusion plate.

[0016] By adopting the above technical solution, since the strip plate is fixed at both ends of the lock body, a connecting structure is formed for the compression plate through the telescopic rod.

[0017] Furthermore, a second spring is fitted onto the outer wall of each of the telescopic rods.

[0018] By adopting the above technical solution, in the initial state, the second spring is in a naturally extended state. At this time, the extrusion plate can be easily pushed by multiple second springs.

[0019] Furthermore, the extrusion plate, under the elastic force of multiple second springs, abuts against the groove to limit the rotation of the threaded rod.

[0020] By adopting the above technical solution, after the turntable has finished rotating, the threaded rod and the threaded sleeve will no longer rotate. At this time, the pressing plate moves towards the turntable under the pushing action of the pushing component and abuts against the groove. Through the abutting action between the groove and the pressing plate, the turntable and the wedge block after rotation are limited, preventing the turntable from deviating from the correct position due to accidental external force collisions, vibrations and other factors, thereby ensuring the accuracy of the password reset operation and the stability of the subsequent use of the combination lock.

[0021] Furthermore, the top of the lock body has multiple viewing holes, and the number of the combination wheel, the dial wheel and the viewing holes are equal.

[0022] By adopting the above technical solution, when setting the password, the user needs to rotate the password wheel to determine the password combination. Since there are multiple viewing holes at the top of the lock body, and the number of password wheels, adjustment wheels and viewing holes are equal, the user can accurately set the password by observing the marked numbers on the password wheel through the viewing holes.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention is a combination lock for preventing scrambled and incorrect codes. The combination wheel and the code adjustment wheel are engaged and can rotate together. With the help of components such as a moving plate, a limiting plate, a slider and a first spring, the linkage between the combination wheel and the code adjustment wheel is ensured to be stable and reliable under normal conditions. The first spring provides an upward elastic force to the slider, so that the slider is in a stable position, thereby ensuring the stability of the position of the moving plate and the code adjustment wheel. This effectively prevents scrambled and incorrect codes caused by loose internal mechanical structure or external interference, greatly improves the accuracy of password input, ensures the normal opening or closing function of the combination lock, and enhances the security and convenience of the user in using the combination lock.

[0025] (2) In this utility model of anti-random code combination lock, the adjustment mechanism plays an important role when special operations such as resetting the password or maintenance are required. By rotating the turntable, the threaded rod is rotated, which in turn moves the threaded sleeve and the wedge block, changing the connection relationship between the adjustment wheel and the combination wheel. The operation is simple and quick. At the same time, the groove on the turntable cooperates with the extrusion plate connected by the push assembly in the protective frame. After the turntable is rotated, the extrusion plate abuts against the groove under the elastic force of the second spring, limiting the rotation of the threaded rod. This effectively prevents the turntable from deviating from the correct position due to accidental external force collisions, vibrations, etc., ensuring the accuracy of the password reset operation and the stability of the combination lock in subsequent use. It reduces the impact of misoperation or accidental situations on the function of the combination lock, and reduces the maintenance cost and use risk of the combination lock. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the anti-scratching and error code combination lock of this utility model.

[0027] Figure 2 This is a schematic diagram of the internal structure of the lock body of the anti-scrambled and incorrect code combination lock of this utility model.

[0028] Figure 3 This is a schematic diagram of the internal structure of the protective frame of the anti-scrambled and incorrect code combination lock of this utility model.

[0029] In the diagram: 1. Lock body; 2. Mounting cavity; 3. Slide cavity; 4. Combination wheel; 5. Adjustment wheel; 6. Slide groove; 7. Slider; 8. First spring; 9. Protective frame; 10. Protective shell; 11. Adjustment mechanism; 12. Turntable; 13. Threaded rod; 14. Threaded sleeve; 15. Strip plate; 16. Telescopic rod; 17. Second spring; 18. Pressing plate; 19. Groove; 20. Visible hole; 21. Limiting plate; 22. Limiting strip hole; 23. Moving plate; 24. Wedge block. DETAILED DESCRIPTION

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] To prevent scrambled or incorrect codes from arising due to misalignment between the combination wheel and the adjustment wheel caused by internal mechanical wear, vibration, or external environmental factors, and to address issues such as increased costs and reduced efficiency during special operations (e.g., forgetting the password, maintenance, or password reset) due to the need for specialized tools or personnel, this solution aims to improve the accuracy, convenience, and stability of password input, thereby reducing usage risks and maintenance costs. Figure 1 , Figure 2 , Figure 3 As shown, the anti-scratching and anti-misread combination lock includes a lock body 1. The lock body 1 has an installation cavity 2 and a sliding cavity 3 inside, with the installation cavity 2 located above the sliding cavity 3. A combination wheel 4 and a dial wheel 5 are respectively installed inside the installation cavity 2 and the sliding cavity 3, and the combination wheel 4 and dial wheel 5 are engaged and rotate together. Two symmetrical limiting plates 21 are vertically fixedly connected inside the lock body 1, and each limiting plate 21 has a limiting strip hole 22. A movable plate 23 is slidably connected inside the sliding cavity 3. The adjusting wheel 5 is located on the upper part of the moving plate 23. The two limiting plates 21 have a sliding groove 6 on the side away from the sliding cavity 3. The sliding groove 6 is slidably connected to the slider 7. The bottom end of the sliding groove 6 is provided with a plurality of first springs 8 fixedly connected to the slider 7. The two ends of the moving plate 23 are both through the limiting strip hole 22 and fixedly connected to the opposite side of the two sliders 7. The sliding groove 6 is provided with a wedge block 24. The top outer wall of the slider 7 is provided with an inclined surface that matches the wedge block 24.

[0032] Both of the two wedge-shaped blocks 24 are fixedly connected to the opposite sides of the screw sleeves 14. Both ends of the lock body 1 are provided with protective frames 9 and protective shells 10 fastened to one side of the protective frames 9. An adjustment mechanism 11 that cooperates with the screw sleeves 14 is provided inside the protective frame 9. The adjustment mechanism 11 includes a fixed sleeve and a threaded rod 13 rotatably connected inside the fixed sleeve. The outer wall of one end of the threaded rod 13 is threadedly connected to the inner wall of the screw sleeve 14. A turntable 12 is fixedly connected to the end of the threaded rod 13 away from the screw sleeve 14. A plurality of grooves 19 are arranged in a circular array on the turntable 12. The inside of the protective frame 9 is connected to a pressing plate 18 that matches the grooves 19 through a pushing component.

[0033] When in use, the combination wheel 4 and the dial wheel 5 are engaged and can rotate together. During the password setting stage, the user can rotate the combination wheel 4 to drive the dial wheel 5, adjusting the combination wheel 4 to the desired password number position. The dial wheel 5 will also move to the corresponding position, completing the password setting. During normal unlocking, when the correct password is entered, the combination wheel 4 rotates to the correct position, driving the dial wheel 5 to the corresponding position, so that the lock can be opened normally.

[0034] The code wheel 5 is set on the upper part of the moving plate 23. The two ends of the moving plate 23 pass through the limiting strip holes 22 and are fixedly connected to the slider 7. The slider 7 slides in the slide groove 6 and is connected to the bottom of the first spring 8. Under normal circumstances, the first spring 8 provides an upward elastic force to keep the slider 7 in a stable position, thereby ensuring the stability of the position of the moving plate 23 and the code wheel 5, and ensuring the normal linkage between the code wheel 4 and the code wheel 5, so as to realize the accurate input of the code and the normal opening or closing of the lock.

[0035] When special operations such as resetting the password or maintenance are required, the wedge block 24 is operated by adjusting the mechanism 11, and the turntable 12 is rotated to drive the threaded rod 13 to rotate. Since the threaded rod 13 is threadedly connected to the threaded sleeve 14, the threaded sleeve 14 will move axially as the threaded rod 13 rotates. The threaded sleeve 14 is fixedly connected to the wedge block 24, so the wedge block 24 will also move accordingly. The inclined surface of the wedge block 24 is adapted to the inclined surface at the top of the slider 7. When the wedge block 24 moves downward, its inclined surface will squeeze the inclined surface of the slider 7, causing the slider 7 to overcome the elastic force of the first spring 8 and slide downward. The downward sliding of the slider 7 will drive the moving plate 23 to move downward, thereby changing the connection relationship between the code wheel 5 and the password wheel 4.

[0036] The turntable 12 is provided with multiple grooves 19, and the inside of the protective frame 9 is connected to the extrusion plate 18 through the push assembly. When the turntable 12 is rotated, the extrusion plate 18 is pushed towards the push assembly to contract through the interaction between the grooves 19 and the extrusion plate 18.

[0037] For example, such as Figure 3As shown, the present invention also includes the pushing component comprising strip plates 15 fixed at both ends of the lock body 1, and a plurality of telescopic rods 16 fixedly connected to the top of the strip plates 15.

[0038] When in use, since the telescopic rod 16 is fixed on the strip plate 15, the strip plate 15 plays a supporting role.

[0039] For example, such as Figure 3 As shown, the present invention also includes that the other ends of the plurality of telescopic rods 16 are fixed to the extrusion plate 18.

[0040] In use, since the strip plate 15 is fixed at both ends of the lock body 1, it forms a connecting structure with the compression plate 18 through the telescopic rod 16.

[0041] For example, such as Figure 3 As shown, the present invention also includes a second spring 17 sleeved on the outer side wall of each of the multiple telescopic rods 16.

[0042] In use, in the initial state, the second spring 17 is in a naturally extended state. At this time, the multiple second springs 17 facilitate the pushing of the compression plate 18.

[0043] For example, such as Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes a compression plate 18 that, under the elastic force of multiple second springs 17, abuts against the groove 19 to limit the rotation of the threaded rod 13.

[0044] When in use, after the turntable 12 has finished rotating, the threaded rod 13 and the threaded sleeve 14 will no longer rotate. At this time, the pressing plate 18 moves towards the turntable 12 under the pushing action of the pushing component and abuts against the groove 19. Through the abutting action between the groove 19 and the pressing plate 18, the rotated turntable 12 and the wedge block 24 are limited to prevent the turntable 12 from deviating from the correct position due to accidental external force collisions, vibrations and other factors, thereby ensuring the accuracy of the password reset operation and the stability of the subsequent use of the combination lock.

[0045] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a plurality of viewing holes 20 at the top of the lock body 1, and the number of the combination wheel 4, the code wheel 5 and the viewing holes 20 are equal.

[0046] When using the lock, the user needs to rotate the combination wheel 4 to determine the combination of the combination. Since the top of the lock body 1 has multiple viewing holes 20, and the number of combination wheels 4, adjustment wheels 5 and viewing holes 20 are equal, the user can accurately set the combination by observing the marked numbers on the combination wheel 4 through the viewing holes 20.

[0047] It should be noted that this utility model is a combination lock for preventing scrambled and incorrect codes. During the password setting stage, the combination wheel 4 is rotated. Since the combination wheel 4 and the adjustment wheel 5 are engaged and can rotate together, the combination wheel 4 is adjusted to the desired password number position. The adjustment wheel 5 also moves to the corresponding position, completing the password setting. At this time, the numbers marked on the combination wheel 4 can be observed through the viewing hole 20 at the top of the lock body 1 to operate accurately, because the number of combination wheels 4, adjustment wheels 5 and viewing holes 20 are equal.

[0048] During normal unlocking, when the correct password is entered, the password wheel 4 rotates to the correct position, driving the dial wheel 5 to the corresponding position, so that the lock can be opened normally. Under normal circumstances, the first spring 8 provides an upward elastic force to keep the slider 7 in a stable position, thereby ensuring the stability of the positions of the moving plate 23 and the dial wheel 5, and ensuring the normal linkage between the password wheel 4 and the dial wheel 5, so as to realize the accurate input of the password and the normal opening or closing of the lock.

[0049] Rotating the turntable 12 causes the threaded rod 13 to rotate. Since the threaded rod 13 is threadedly connected to the threaded sleeve 14, the threaded sleeve 14 will move axially as the threaded rod 13 rotates. The threaded sleeve 14 is fixedly connected to the wedge block 24, so the wedge block 24 will also move accordingly. The inclined surface of the wedge block 24 is matched with the inclined surface at the top of the slider 7. When the wedge block 24 moves downward, its inclined surface will press against the inclined surface of the slider 7, causing the slider 7 to slide downward against the elastic force of the first spring 8. The downward sliding of the slider 7 will drive the moving plate 23 to move downward, thereby changing the connection relationship between the code wheel 5 and the code wheel 4.

[0050] When the turntable 12 rotates, the interaction between the groove 19 and the pressing plate 18 pushes the pressing plate 18 towards the pushing assembly to retract. The pushing assembly includes strip plates 15 fixed to both ends of the lock body 1. Multiple telescopic rods 16 are fixedly connected to the top of the strip plates 15. The other ends of the multiple telescopic rods 16 are all fixed to the pressing plate 18, and a second spring 17 is sleeved on the outer wall of each of the multiple telescopic rods 16. In the initial state, the second springs 17 are in a naturally extended state. At this time, the pressing plate 18 is easily pushed by the multiple second springs 17. After the turntable 12 has rotated, the threaded rod 13 and the threaded sleeve 14 no longer rotate. At this time, the pressing plate 18 moves towards the turntable 12 under the pushing action of the pushing assembly and abuts against the groove 19. Through the abutting action between the groove 19 and the pressing plate 18, the rotated turntable 12 and the wedge block 24 are limited to prevent the turntable 12 from deviating from the correct position due to accidental external force collisions, vibrations, or other factors, thereby ensuring the accuracy of the password reset operation and the stability of the subsequent use of the combination lock.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combination lock resistant to scrambled or incorrect codes, comprising a lock body (1), characterized in that, The lock body (1) has an installation cavity (2) and a sliding cavity (3) inside, with the installation cavity (2) located above the sliding cavity (3). The installation cavity (2) and the sliding cavity (3) are respectively equipped with a combination wheel (4) and a dialing wheel (5), which are engaged and rotate together. The lock body (1) has two vertically fixed limiting plates (21), each with a limiting strip hole (22). The sliding cavity (3) has a sliding plate (23) inside. The dialing wheel (5)... Located on the upper part of the movable plate (23), each of the two limiting plates (21) has a sliding groove (6) on the side away from the sliding cavity (3). A slider (7) is slidably connected inside the sliding groove (6). A plurality of first springs (8) are fixedly connected to the slider (7) at the bottom end of the sliding groove (6). Both ends of the movable plate (23) are through limiting strip holes (22) and fixedly connected to the opposite side of the two sliders (7). A wedge block (24) is provided inside the sliding groove (6). The top outer wall of the slider (7) is provided with an inclined surface that matches the wedge block (24). Both of the two wedge blocks (24) are fixedly connected to the opposite sides of the screw sleeves (14). Both ends of the lock body (1) are provided with protective frames (9) and protective shells (10) fastened to one side of the protective frames (9). An adjustment mechanism (11) that cooperates with the screw sleeves (14) is provided inside the protective frame (9). The adjustment mechanism (11) includes a fixed sleeve and a threaded rod (13) rotatably connected inside the fixed sleeve. The outer wall of one end of the threaded rod (13) is threadedly connected to the inner wall of the screw sleeve (14). A turntable (12) is fixedly connected to the end of the threaded rod (13) away from the screw sleeve (14). Multiple grooves (19) are arranged in a ring array on the turntable (12). The inside of the protective frame (9) is connected to a pressing plate (18) that matches the grooves (19) through a pushing component.

2. The anti-scratching and anti-error code combination lock according to claim 1, characterized in that: The pushing assembly includes strip plates (15) fixed at both ends of the lock body (1), and a plurality of telescopic rods (16) are fixedly connected to the top of the strip plates (15).

3. The anti-scrambled and anti-error code combination lock according to claim 2, characterized in that: The other end of each of the telescopic rods (16) is fixed to the extrusion plate (18).

4. The anti-scrambled and anti-error combination lock according to claim 3, characterized in that: A second spring (17) is fitted on the outer side wall of each of the multiple telescopic rods (16).

5. The anti-scratching and anti-error code combination lock according to claim 1, characterized in that: The extrusion plate (18) abuts against the groove (19) under the elastic force of multiple second springs (17) to limit the rotation of the threaded rod (13).

6. The anti-scratching and anti-error code combination lock according to claim 1, characterized in that: The top of the lock body (1) has multiple viewing holes (20), and the number of the code wheel (4), the code wheel (5) and the viewing holes (20) are equal.

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