A mechanical combination lock

Abstract

The utility model provides a kind of mechanical combination lock, it is related to combination lock technical field, including lock device and lock catch device, lock device includes lock body, password wheel group and mobile locking member, password wheel group is rotatably arranged on lock body, password wheel group is provided with the displacement part for the displacement mobile locking member, rotating password wheel group, can make displacement part and mobile locking member corresponding;Mobile locking member is movably arranged on lock body, mobile locking member and lock catch device lock, along displacement part sliding mobile locking member, can make mobile locking member and lock catch device disengage;The utility model is by physical rotation password wheel group and makes displacement part and mobile locking member stagger or align, to realize locking or unlocking, adopt pure mechanical structure, can completely get rid of the dependence on power, not only can improve use stability, reduce cost and maintenance difficulty, but also can strengthen environmental tolerance, prolong service life, improve safety performance, reduce cracking risk simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of combination lock technology, specifically to a mechanical combination lock. Background Technology

[0002] With the increasing demand for security, combination locks, as convenient security products, are widely used in various scenarios such as homes, offices, and warehouses. Currently, most mainstream combination locks on the market are electronic, relying on electronic components for password recognition and lock control. Specifically, they receive the user's input password signal through components such as circuit boards, chips, buttons, or touchscreens, and after verification and matching, drive a motor or electromagnetic mechanism to complete the locking and unlocking actions.

[0003] However, electronic combination locks have many limitations in practical applications:

[0004] Firstly, it relies on continuous power supply. Whether it is a built-in battery or an external power source, once the power is exhausted or the power supply fails, the lock will not work properly, which can easily lead to the user being trapped or unable to open the lock. This problem is even more prominent in remote warehouses, outdoor equipment boxes and other scenarios where it is difficult to frequently replace batteries or where the power supply is unstable.

[0005] Secondly, it has poor environmental adaptability. Electronic components are sensitive to environmental factors such as temperature, humidity, electromagnetic interference, and dust. In high-temperature and high-humidity kitchens, damp basements, dusty workshops, or industrial areas with strong electromagnetic interference, electronic combination locks are prone to circuit failures, recognition failures, and other problems, resulting in a significantly shortened service life.

[0006] Third, the structure is more complex and the cost is higher. Electronic combination locks need to integrate multiple precision electronic components, which not only requires higher process requirements in the manufacturing process, but also requires professional personnel to handle electronic component failures during later maintenance, making the maintenance cost significantly higher than that of traditional mechanical locks.

[0007] Fourth, there are security risks. The electronic systems of some low-end electronic combination locks are at risk of being hacked or technically cracked.

[0008] Against this backdrop, there is a clear market demand for a combination lock product that is not dependent on electricity, has a simple and reliable structure, is highly adaptable to the environment, and is highly secure. The mechanical combination lock of this utility model is proposed to meet this demand. Utility Model Content

[0009] The purpose of this utility model is to provide a mechanical combination lock to solve the above-mentioned technical problems existing in the prior art; the preferred technical solution among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] This utility model provides a mechanical combination lock, including a locking device and a latching device, wherein: the locking device includes a lock body, a combination wheel set, and a movable locking member; the combination wheel set is rotatably mounted on the lock body, and the combination wheel set is provided with a clearance portion for accommodating the movable locking member; rotating the combination wheel set allows the clearance portion to correspond to the movable locking member; the movable locking member is movably mounted on the lock body, and the movable locking member is locked with the latching device; moving the movable locking member along the clearance portion allows the movable locking member to disengage from the latching device.

[0012] Preferably, the combination wheel assembly includes a first barcode wheel and a first combination wheel, and the clearance portion includes a first clearance groove, wherein: the first combination wheel is rotatably mounted on the lock body; the first barcode wheel is positioned and connected to the first combination wheel and can rotate synchronously, and the first clearance groove is formed on the outer wall of the first barcode wheel.

[0013] Preferably, the combination wheel assembly includes a first positioning component, which includes a first elastic element and a first positioning element, wherein: the two ends of the first elastic element abut against the first positioning element and the lock body respectively; a plurality of first positioning holes are evenly arranged circumferentially on the outer wall of the first combination wheel, the first positioning holes are adapted to the first positioning element, and rotating the first combination wheel can make the first positioning element be positioned and connected with any of the first positioning holes.

[0014] Preferably, the code wheel assembly includes a second barcode wheel and a second code wheel, and the clearance portion includes a second clearance groove, wherein: the second code wheel is rotatably sleeved on the first code wheel; the second barcode wheel is positioned connected to the second code wheel and can rotate synchronously, and the second clearance groove is formed on the outer wall of the second barcode wheel.

[0015] Preferably, the combination wheel assembly includes a second positioning component, which includes a second elastic element and a second positioning element, wherein: the two ends of the second elastic element abut against the second positioning element and the lock body respectively; a plurality of second positioning holes are evenly arranged circumferentially on the outer wall of the second combination wheel, the second positioning holes are adapted to the second positioning element, and rotating the second combination wheel can make the second positioning element be positioned and connected with any of the second positioning holes.

[0016] Preferably, the first barcode wheel and the second barcode wheel are arranged opposite to each other, and a third elastic element is abutting between the first barcode wheel and the second barcode wheel.

[0017] Preferably, the lock body has a guide groove inside, and the movable locking member is slidably disposed in the guide groove; the movable locking member is abutted by a fourth elastic member, and the fourth elastic member abuts against the groove wall of the guide groove.

[0018] Preferably, the movable locking component is configured as a locking plate, and a clearance groove is provided in the middle of the locking plate, with the combination wheel set located in the clearance groove.

[0019] Preferably, the inner wall of the relief groove is provided with a locking part, which is adapted to the relief part; the locking part is configured as a locking tongue.

[0020] Preferably, the locking device includes a locking body and a mounting member, wherein: the locking body is hinged to the mounting member; the locking body is provided with a locking part, and the movable locking member is provided with a locking part adapted to the locking part.

[0021] The mechanical combination lock provided by this utility model has at least the following beneficial effects:

[0022] I. Reduce dependence on electricity and improve usage stability

[0023] This invention relies entirely on physical structure to achieve password recognition and unlocking, eliminating the need for batteries, external power supplies, or other power components. This fundamentally solves the problem of electronic combination locks becoming unusable due to battery depletion or power failure. Whether in long-term unattended storage boxes, outdoor communication equipment cabinets, or areas with frequent power outages, the lock maintains stable operation, significantly reducing the risks associated with power supply issues and greatly improving its environmental adaptability and reliability.

[0024] II. Simplify structural design to reduce costs and maintenance difficulty.

[0025] Compared to electronic combination locks that require complex electronic components such as integrated circuit boards, chips, and motors, the core components of this invention are only the lock body, combination wheel assembly, and moving locking mechanism. The structure is much simpler, and the manufacturing process does not require high-precision electronic component processing and assembly, effectively reducing production costs. Furthermore, the failure rate of the mechanical structure is far lower than that of the electronic system. During later maintenance, no professional personnel are needed to handle electronic faults; only routine inspections or simple replacements of mechanical parts are required, significantly reducing maintenance costs and making maintenance operations more convenient, suitable for widespread application.

[0026] III. Enhance environmental tolerance and extend service life

[0027] Because it contains no electronic components, this invention exhibits significantly better resistance to harsh environmental factors such as temperature, humidity, dust, and electromagnetic interference than electronic combination locks. In high-temperature and high-humidity kitchens and bathrooms, dusty factory workshops, or industrial settings with strong electromagnetic radiation, the lock will not experience problems such as short circuits, component aging, or recognition failures. The stability of its physical structure ensures long-term normal operation and a significantly extended service life, making it particularly suitable for security needs under various complex working conditions.

[0028] IV. Enhance security performance and reduce the risk of hacking.

[0029] The password recognition of this utility model relies on the physical rotation of the password wheel assembly and the precise alignment of the clearance part. Its cracking method requires trying password combinations through physical operation. Compared with the risks of remote intrusion and technical cracking that may exist in electronic password locks, the mechanical structure is more difficult to crack. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model from one perspective;

[0032] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0033] Figure 3 This is a structural schematic diagram from another perspective of this utility model;

[0034] Figure 4 This is a structural schematic diagram of part of the locking device of this utility model;

[0035] Figure 5 This is a schematic diagram of the installation state of the first password wheel of this utility model;

[0036] Figure 6 This is a schematic diagram of the installation state of the first barcode wheel, the second barcode wheel, and the movable locking component from one perspective.

[0037] Figure 7 This is a schematic diagram of the installation state of the first barcode wheel, the second barcode wheel, and the movable locking component from another perspective.

[0038] Figure 8 This is a utility model Figure 6 Enlarged view of part A;

[0039] Figure 9 This is a utility model Figure 7 Enlarged view of part B;

[0040] Figure 10 This is a cross-sectional schematic diagram of the present invention.

[0041] Figure Labels

[0042] 1. Locking device; 11. Locking body; 12. Combination wheel assembly; 121. First combination wheel; 122. Second combination wheel; 123. First barcode wheel; 1231. First clearance groove; 124. Second barcode wheel; 1241. Second clearance groove; 125. First elastic element; 126. First positioning element; 127. Second elastic element; 128. Second positioning element; 129. Third elastic element; 13. Moving locking element; 131. Locking element body; 1311. Lock tongue; 1312. Locking part; 132. Toggle button; 133. Fourth elastic element; 134. Threaded connector; 2. Locking device; 21. Locking body; 211. Locking part; 22. Mounting part. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] This utility model provides a mechanical combination lock, such as Figures 1 to 10 As shown, the mechanical combination lock includes a locking device 1 and a latching device 2.

[0045] The locking device 1 includes a lock body 11, a combination wheel set 12, and a movable locking member 13. The combination wheel set 12 is rotatably mounted on the lock body 11. The combination wheel set 12 is provided with a clearance portion for making way for the movable locking member 13. Rotating the combination wheel set 12 can make the clearance portion correspond to the movable locking member 13. The movable locking member 13 is movably mounted on the lock body 11.

[0046] In the locked state, the clearance part is misaligned with the movable locking member 13, and the movable locking member 13 cannot move, thus being securely locked with the locking device 2.

[0047] When unlocking, rotate the combination wheel set 12 to the position corresponding to the correct combination. At this time, the yielding part corresponds to the movable locking member 13. Push the movable locking member 13, and the movable locking member 13 slides along the yielding part until it disengages from the locking device 2, and the unlocking is completed.

[0048] This invention achieves locking and unlocking by physically rotating the combination wheel assembly 12 to misalign or align the clearance part with the movable locking part 13. It adopts a purely mechanical combination lock structure, which can completely eliminate the dependence on electricity. This not only improves the stability of use, reduces costs and maintenance difficulty, but also enhances environmental resistance, extends service life, improves security performance, and reduces the risk of cracking.

[0049] As an optional implementation, the combination wheel assembly 12 includes a first barcode wheel 123 and a first combination wheel 121. The clearance portion includes a first clearance groove 1231. The lock body 11 is provided with a mounting groove. The first combination wheel 121 is rotatably disposed in the mounting groove. The first barcode wheel 123 is positioned and connected to the first combination wheel 121 and can rotate synchronously. The first clearance groove 1231 is formed on the outer wall of the first barcode wheel 123.

[0050] The first password wheel 121 has a password scale along its circumferential direction. In actual use, when the first password wheel 121 rotates to the specified password scale, the first clearance groove 1231 corresponds to the movable locking member 13. At this time, the movable locking member 13 can be moved and inserted into the first clearance groove 1231.

[0051] As an optional implementation, a plurality of first positioning grooves are evenly distributed circumferentially on the end face of the first code wheel 121 facing the first barcode wheel 123, and a first positioning protrusion is provided on the end face of the first barcode wheel 123 facing the first code wheel 121 at the position corresponding to the first positioning groove, and the first positioning protrusion is positioned and connected in the corresponding first positioning groove.

[0052] When adjusting the unlocking code of the first code wheel 121, the movable locking member 13 is inserted into the first clearance groove 1231. Then, the first code wheel 121 is rotated to a specified angle relative to the first barcode wheel 123 using a special tool. At this specified angle, the corresponding first positioning protrusion and the first positioning groove are positioned and connected, and the first barcode wheel 123 and the first code wheel 121 can rotate synchronously. At this time, the unlocking code adjustment of the first code wheel 121 is completed.

[0053] As an optional implementation, the password wheel set 12 includes a first positioning component, which includes a first elastic element 125 and a first positioning element 126.

[0054] The first elastic element 125 is a spring, and the first positioning element 126 is a steel ball. The two ends of the first elastic element 125 abut against the first positioning element 126 and the lock body 11, respectively. A plurality of first positioning holes are evenly arranged circumferentially on the outer wall of the first combination wheel 121. The first positioning holes are adapted to the first positioning element 126. Rotating the first combination wheel 121 can make the first positioning element 126 be positioned and connected with any of the first positioning holes.

[0055] When the user rotates the first password wheel 121, the first positioning member 126 engages / disengages from different first positioning holes under the action of the first elastic member 125. On the one hand, it has a positioning function, making the gear positioning more stable. On the other hand, it will produce a noticeable jerking sensation during rotation. This physical feedback can effectively prompt the user that the first password wheel 121 has been rotated into place.

[0056] As an optional implementation, the code wheel assembly 12 includes a second barcode wheel 124 and a second code wheel 122. The clearance portion includes a second clearance groove 1241. The second code wheel 122 is rotatably sleeved on the first code wheel 121. The second barcode wheel 124 is positioned and connected to the second code wheel 122 and can rotate synchronously. The second clearance groove 1241 is formed on the outer wall of the second barcode wheel 124.

[0057] During the unlocking process, when both the first combination wheel 121 and the second combination wheel 122 rotate to the correct combination, and the movable locking member 13 simultaneously corresponds to the first clearance groove 1231 and the second clearance groove 1241, the movable locking member 13 can move smoothly and disengage from the locking device 2.

[0058] The second barcode wheel 124 and the second password wheel 122, together with the first barcode wheel 123 and the first password wheel 121, can realize the combination of multiple passwords and the setting of multiple passwords, which can effectively increase the difficulty of password cracking and further enhance the security of the lock; in addition, the two password wheels are nested, making the structure more compact.

[0059] Furthermore, the positioning connection structure of the second barcode wheel 124 and the second password wheel 122 is the same as the positioning connection structure of the first barcode wheel 123 and the first password wheel 121; when adjusting the unlocking password, the movable locking member 13 is inserted into the first clearance groove 1231 and the second clearance groove 1241, and a special tool is used to rotate the first password wheel 121 and the second password wheel 122 to the specified angle respectively.

[0060] As an optional implementation, the combination wheel assembly 12 includes a second positioning component, which includes a second elastic element 127 and a second positioning element 128. The second elastic element 127 is a spring, and the second positioning element 128 is a steel ball. The two ends of the second elastic element 127 abut against the second positioning element 128 and the lock body 11, respectively. A plurality of second positioning holes are evenly arranged circumferentially on the outer wall of the second combination wheel 122. The second positioning holes are adapted to the second positioning element 128. Rotating the second combination wheel 122 can position and connect the second positioning element 128 with any of the second positioning holes.

[0061] The functions of the second elastic element 127 and the second positioning element 128 are the same as those of the first elastic element 125 and the first positioning element 126.

[0062] As an optional implementation, the first barcode wheel 123 and the second barcode wheel 124 are arranged opposite to each other, and a third elastic member 129 is abutting between the first barcode wheel 123 and the second barcode wheel 124.

[0063] The third elastic element 129 can provide elastic thrust, thereby ensuring the positioning and connection effect of the first code wheel 121 with the first barcode wheel 123, the second code wheel 122, and the second barcode wheel 124.

[0064] As an optional implementation, the lock body 11 is provided with a guide groove, and the movable locking member 13 is slidably disposed in the guide groove; the guide groove can effectively constrain the movement trajectory of the movable locking member 13, thereby ensuring the unlocking effect.

[0065] The movable locking member 13 is abutted against by a fourth elastic member 133, which abuts against the groove wall of the guide groove. The fourth elastic member 133 is a spring, which mainly plays a resetting role. When unlocking, an external force is applied to the movable locking member 13 to move and unlock it. During this process, the fourth elastic member 133 deforms. When the external force is removed, the deformed fourth elastic member 133 releases its elastic force, so that the movable locking member 13 is reset.

[0066] As an optional implementation, the movable locking member 13 is configured as a locking plate, and a clearance groove is provided in the middle of the locking plate, with the combination wheel set 12 located in the clearance groove.

[0067] This design optimizes the spatial layout and achieves a compact and miniaturized structure.

[0068] As an optional implementation, the inner wall of the clearance groove is provided with a locking part, which is adapted to the clearance part.

[0069] The locking part is configured as a locking tongue 1311, which is adapted to the first clearance groove 1231 and the second clearance groove 1241. The precise locking structure can effectively prevent accidental unlocking due to slight vibration or external force, and further improve the security of the lock.

[0070] As an optional implementation, the locking device 2 includes a locking body 21 and a mounting member 22. The locking body 21 is hinged to the mounting member 22. The locking body 21 is provided with a locking part 211, and the movable locking member 13 is provided with a locking part 1312 that is adapted to the locking part 211.

[0071] Specifically, the locking part 211 is configured as a locking ring, and the locking part 1312 is configured as a locking tongue.

[0072] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0073] 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 at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mechanical combination lock, characterized in that, Includes locking mechanisms and latching mechanisms, wherein: The locking device includes a lock body, a combination wheel assembly, and a movable locking member. The combination wheel assembly is rotatably mounted on the lock body. The combination wheel assembly is provided with a clearance portion for making way for the movable locking member. Rotating the combination wheel assembly allows the clearance portion to correspond to the movable locking member. The movable locking member is movably mounted on the lock body. The movable locking member is locked with the latching device. Moving the movable locking member along the relief portion can disengage the movable locking member from the latching device.

2. The mechanical combination lock according to claim 1, characterized in that, The cipher wheel assembly includes a first barcode wheel and a first cipher wheel, and the clearance portion includes a first clearance groove, wherein: The first combination wheel is rotatably mounted on the lock body; The first barcode wheel is positioned and connected to the first password wheel and can rotate synchronously. The first clearance groove is formed on the outer wall of the first barcode wheel.

3. The mechanical combination lock according to claim 2, characterized in that, The cipher wheel assembly includes a first positioning component, which comprises a first elastic element and a first positioning element, wherein: The two ends of the first elastic element abut against the first positioning element and the lock body, respectively; The outer wall of the first code wheel is provided with a plurality of first positioning holes evenly arranged along the circumference. The first positioning holes are adapted to the first positioning member. Rotating the first code wheel can make the first positioning member be positioned and connected with any of the first positioning holes.

4. The mechanical combination lock according to claim 2, characterized in that, The cipher wheel assembly includes a second barcode wheel and a second cipher wheel, and the clearance portion includes a second clearance groove, wherein: The second code wheel is rotatably mounted on the first code wheel; The second barcode wheel is positioned and connected to the second password wheel and can rotate synchronously. The second clearance groove is formed on the outer wall of the second barcode wheel.

5. The mechanical combination lock according to claim 4, characterized in that, The cipher wheel assembly includes a second positioning component, which comprises a second elastic element and a second positioning element, wherein: The two ends of the second elastic element abut against the second positioning element and the lock body, respectively; The outer wall of the second code wheel is evenly provided with a plurality of second positioning holes along the circumference. The second positioning holes are adapted to the second positioning member. Rotating the second code wheel can make the second positioning member be positioned and connected with any of the second positioning holes.

6. The mechanical combination lock according to claim 5, characterized in that, The first barcode wheel and the second barcode wheel are arranged opposite to each other, and a third elastic element is abutting between the first barcode wheel and the second barcode wheel.

7. The mechanical combination lock according to claim 1, characterized in that, The lock body has a guide groove inside, and the movable locking component is slidably disposed in the guide groove; The movable locking member is abutted against a fourth elastic member, which abuts against the wall of the guide groove.

8. The mechanical combination lock according to claim 7, characterized in that, The movable locking component is configured as a locking plate, and a clearance groove is provided in the middle of the locking plate, with the combination wheel set located in the clearance groove.

9. The mechanical combination lock according to claim 8, characterized in that, The inner wall of the clearance groove is provided with a locking part, which is adapted to the clearance part; The locking part is configured as a locking tongue.

10. The mechanical combination lock according to claim 1, characterized in that, The locking device includes a locking body and a mounting component, wherein: The latch body is hinged to the mounting component; The latch body is provided with a locking part, and the movable locking member is provided with a locking part that is adapted to the locking part.

Images