Dual locking military combination lock
By designing a military-grade double-lock combination lock, which employs a combination lock and buckle for a dual-locking structure, the problems of loose locks and lack of secondary locking are solved, achieving higher security and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI NRH HARDWARE CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-09
Smart Images

Figure CN224338769U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a lock, and more particularly to a military-grade double-lock combination lock. Background Technology
[0002] Military crates are typically equipped with latches. The locks on military crates are usually opened with a key. The key turns the lock cylinder, which then opens or closes the lid of the military crate.
[0003] Because existing locks use a hook-and-lock mechanism that doesn't lock securely, and using a key to unlock them is quite inconvenient.
[0004] Therefore, military crates sometimes use combination locks. However, existing locks do not have a secondary locking mechanism. As a result, if the combination lock is unlocked without the user's knowledge, military items inside the crate may fall out, causing unnecessary trouble. Utility Model Content
[0005] The purpose of this invention is to provide a military-grade double-lock combination lock to solve the problems existing in the prior art.
[0006] According to one aspect of the present invention, a military double-lock combination lock is provided, comprising a lock body and a lock base. The lock base includes a base, a first rotating seat, a second rotating seat, and a lock part. One end of the first rotating seat is rotatably connected to one end of the base, and one end of the second rotating seat is rotatably connected to the first rotating seat. The other end of the second rotating seat can be fastened onto the lock body so that the lock base and the lock body are fastened together. The lock part is disposed on the first rotating seat and can be locked by the base so that the first rotating seat cannot rotate around the base, or the lock part can be detached from the base so that the first rotating seat can rotate around the base.
[0007] In some embodiments, the lock includes a combination lock, a rotating shaft, and a rotating buckle. The combination lock is mounted on a first rotating base. One end of the rotating shaft is connected to the combination lock, and the other end of the rotating shaft passes through the first rotating base and is connected to the rotating buckle. The rotating buckle can rotate together with the combination lock and the rotating shaft, so that the rotating buckle can be locked by the base or can be disengaged from the base.
[0008] In some embodiments, a latch is also included, which is disposed on the base and a portion of the latch extends out of the base, and the rotating buckle can be engaged by the latch or disengaged from the latch.
[0009] In some embodiments, the first rotating seat is provided with a first slot, and the corresponding position of the base is provided with a second slot. The side of the buckle is provided with a protrusion, which is located in the first slot. The buckle and the protrusion can move along the base, and the protrusion can be locked in the second slot, or the protrusion can be disengaged from the second slot after moving a set distance.
[0010] In some embodiments, one end of the latch is also provided with a spring, which is in a compressed state, with one end of the spring abutting against the base and the other end abutting against the latch.
[0011] In some embodiments, an arc-shaped portion is provided at the first slot on the base, and the arc-shaped portion can guide the movement of the buckle when the buckle moves along the first slot.
[0012] In some embodiments, the buckle includes an annular portion and a pressing portion. The annular portion is located in the base, one end of the pressing portion extends into the base and is connected to the annular portion, and the other end of the pressing portion is bent. The buckle can be locked by the annular portion, or the buckle can be disengaged from the annular portion after rotating at a set angle.
[0013] In some embodiments, the second rotating seat is provided with a slot, and the buckle body is provided with a horizontal rod, so that the slot can be engaged in the horizontal rod.
[0014] The beneficial effects of this utility model are as follows: In this utility model, after the combination lock is rotated to the set number, the combination lock can drive the rotating buckle to rotate through the rotating shaft. After the rotating buckle is set at an angle, the rotating buckle can detach from the base. At this time, the first rotating seat and the second rotating seat can rotate. The second rotating seat can detach from the buckle body to complete the unlocking process. Conversely, it can lock. A double locking structure can be formed by the buckle and the combination lock.
[0015] The combination lock of this invention is more convenient, and the unlocking and locking process is also faster. In addition, this invention is equipped with a buckle, which can also lock the first rotating seat. The buckle and the combination lock can form a double locking structure, which can prevent the second rotating seat from detaching from the buckle body after the combination lock drives the rotating buckle to rotate, thus preventing it from affecting the use of this invention. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a military double-locking combination lock according to one embodiment of the present invention;
[0017] Figure 2 for Figure 1 A schematic diagram of the military double-lock combination lock from another direction;
[0018] Figure 3 for Figure 1 The diagram shows the structure of the military-grade double-lock combination lock hidden behind the buckle body.
[0019] Figure 4 for Figure 1 The diagram shows the structure of the hidden buckle body and the second rotating seat of the military-grade double-lock combination lock.
[0020] Figure 5 for Figure 4The diagram shows the structure of the military-grade double-lock combination lock hidden behind the first rotating base in another direction.
[0021] Figure 6 for Figure 5 The diagram shows the structure of a military-grade double-lock combination lock with a hidden combination lock.
[0022] In the diagram, 1-buckle body; 11-horizontal bar; 2-lock seat; 21-base; 211-second slot; 212-arc-shaped part; 22-first rotating seat; 221-first slot; 23-second rotating seat; 231-slot; 24-lock part; 241-combination lock; 242-rotating shaft; 243-rotating buckle; 3-buckle; 31-protrusion; 32-ring part; 33-pressing part; 4-spring. Detailed Implementation
[0023] 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.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] Figures 1-6 The diagram illustrates the structure of a military-grade double-lock combination lock according to one embodiment of the present invention.
[0026] like Figures 1-6 As shown, a military-grade double-lock combination lock includes a lock body 1 and a lock base 2.
[0027] from Figures 1-6 As can be seen from the diagram, the lock base 2 in this embodiment includes a base 21, a first rotating base 22, a second rotating base 23, and a lock part 24. Figure 1 and Figure 2In this configuration, the upper end of the first rotating seat 22 is rotatably connected to the upper end of the base 21, and the lower end of the second rotating seat 23 is rotatably connected to the upper end of the first rotating seat 22. The upper end of the second rotating seat 23 can be fastened onto the buckle body 1 so that the lock seat 2 and the buckle body 1 are fastened together. The lock part 24 can be installed on the first rotating seat 22. The lock part 24 can be locked by the base 21 so that the first rotating seat 22 cannot rotate around the base 21, or the lock part 24 can be detached from the base 21 so that the first rotating seat 22 can rotate around the base 21.
[0028] Specifically, when the lock 24 is locked and the upper end of the second rotating seat 23 is fastened to the buckle body 1, the first rotating seat 22 cannot rotate and is in a locked state. The base 21 can be fixedly installed on the military case, and the buckle body 1 can be installed on the case lid. In this case, the military case and the case lid can be closed together. Conversely, when the lock 24 is not locked, the first rotating seat 22 can rotate around the base 21 at a certain angle, and the second rotating seat 23 can also rotate around the first rotating seat 22 at a certain angle. At this time, the second rotating seat 23 can be detached from the buckle body 1, and the military case and the case lid can be separated.
[0029] The specific structure of the lock part 24 is as follows: The lock part 24 includes a combination lock 241, a rotating shaft 242, and a rotating buckle 243. The combination lock 241 is mounted on the first rotating base 22. One end of the rotating shaft 242 is connected to the combination lock 241, and the other end of the rotating shaft 242 passes through the first rotating base 22 and is connected to the rotating buckle 243. The rotating buckle 243 can rotate together with the combination lock 241 and the rotating shaft 242, so that the rotating buckle 243 can be locked by the base 21 or can be disengaged from the base 21. The combination lock 241 itself is an existing device. After the three numbers on the combination lock 241 are rotated to the set number, the combination lock 241 can rotate. When the combination lock 241 rotates, it can drive the rotating buckle 243 to rotate through the rotating shaft 242. After the rotating buckle 243 rotates to the set angle, it can be locked by the base 21 or can be disengaged from the base 21.
[0030] The present invention also includes a buckle 3, which can be regarded as part of the base 21. The buckle 3 is installed on the base 21, and a part of the buckle 3 extends out of the base 21. The rotating buckle 243 can be locked by the buckle 3 or can be released from the buckle 3.
[0031] To prevent the first rotating seat 22 and the second rotating seat 23 from rotating on their own when the rotating buckle 243 disengages from the base 21, thus causing the lid to open, a second locking structure can be provided. The aforementioned combination lock 241 is equivalent to the first locking structure. A first slot 221 can be formed on the first rotating seat 22, and a second slot 211 can be integrally formed on the corresponding position of the base 21. The side of the buckle 3 has a protrusion 31, which can be disposed in the first slot 221 and the second slot 211. The buckle 3 and the protrusion 31 can move along the second slot 211 of the base 21. Figure 4 and Figure 5 As shown, protrusion 31 can be engaged in the second slot 211, or... Figure 4 After the protrusion 31 moves upward a certain distance, it can no longer be locked by the second slot 211. At this time, the protrusion 31 can disengage from the second slot 211 (of course, the protrusion 31 is always in the first slot 221 and will not disengage from the first slot 221).
[0032] Therefore, when the protrusion 31 of the latch 3 is engaged in the first slot 221, the first rotating seat 22 cannot rotate either, and when pushed upwards... Figure 4 and Figure 5 When the buckle 3 is shown, the protrusion 31 of the buckle 3 can disengage from the second slot 211 and will not get stuck in the first slot 221. At this time, the first rotating seat 22 can rotate (of course, the combination lock 241 also needs to be rotated at a certain angle for the first rotating seat 22 to rotate).
[0033] like Figure 5 and Figure 6 As shown, a spring 4 is also provided at the upper end of the latch 3. The spring 4 is in a compressed state, with its upper end abutting against the base 21 and its lower end abutting against the latch 3. The spring 4 can play a role in resetting the latch.
[0034] like Figure 5 As shown, an arc-shaped portion 212 is integrally formed at the first slot 221 on the base 21. When the buckle 3 moves along the first slot 221, the arc-shaped portion 212 can guide the movement of the buckle 3 and prevent the buckle 3 from coming off the first slot 221.
[0035] In this embodiment, as Figure 6 As shown, the buckle 3 includes an annular portion 32 and a pressing portion 33. The annular portion 32 is located in the base 21. One end of the pressing portion 33 extends into the base 21 and is connected to the annular portion 32. The lower end of the pressing portion 33 is bent. The rotating buckle 243 can be locked by the annular portion 32, or the rotating buckle 243 can disengage from the annular portion 32 after rotating at a set angle. Figure 6 As shown, when the rotating buckle 243 rotates about 90°, the rotating buckle 243 can disengage from the annular part 32.
[0036] like Figure 2 As shown, a slot 231 is integrally formed on the second rotating seat 23, and a horizontal rod 11 is provided on the buckle body 1. The slot 231 can be locked in the horizontal rod 11. The buckle body 1 can be installed on the box cover, while this utility model can be installed on the military box body.
[0037] This invention forms a double-locking structure through the combination lock 241 and the latch 3. When the combination lock 241 drives the rotating latch 243 to rotate at a set angle, the latch 3 will still lock the first rotating seat 22. To make the first rotating seat 22 rotate around the base 21, it is necessary to press upwards. Figure 5 and Figure 6 The buckle 3 shown allows the protrusion 31 on the buckle 3 to disengage from the second slot 211 and not get stuck in the first slot 221. At this time, the first rotating seat 22 can rotate, causing the second rotating seat 23 to also rotate, and the buckle body 1 and the second rotating seat 23 to separate.
[0038] In this utility model, after the combination lock 241 is rotated to the set number, the combination lock 241 can drive the rotating buckle 243 to rotate through the rotating shaft 242. After the rotating buckle 243 is set at an angle, the rotating buckle 243 can disengage from the base 21. At the same time, after pressing the latch 3, the first rotating seat 22 and the second rotating seat 23 can rotate. The second rotating seat 23 can be disengaged from the buckle body 1, thereby completing the unlocking process. Conversely, it can be locked. The latch 3 and the combination lock 241 can form a double locking structure.
[0039] The combination lock of this invention is more convenient, and the unlocking and locking process is faster. Furthermore, this invention features a latch that can also lock the first rotating seat. The latch and the combination lock form a double locking structure, preventing the second rotating seat from detaching from the latch body after the combination lock rotates, thus preventing it from affecting the use of this invention.
[0040] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.
Claims
1. A military-grade double-lock combination lock, characterized in that: The device includes a buckle body (1) and a lock base (2). The lock base (2) includes a base (21), a first rotating seat (22), a second rotating seat (23), and a lock part (24). One end of the first rotating seat (22) is rotatably connected to one end of the base (21), and one end of the second rotating seat (23) is rotatably connected to the first rotating seat (22). The other end of the second rotating seat (23) can be fastened to the buckle body (1) so that the lock base (2) and the buckle body (1) are fastened together. The lock part (24) is provided on the first rotating seat (22). The lock part (24) can be locked by the base (21) so that the first rotating seat (22) cannot rotate around the base (21), or the lock part (24) can be detached from the base (21) so that the first rotating seat (22) can rotate around the base (21).
2. The military-grade double-lock combination lock according to claim 1, characterized in that: The lock part (24) includes a combination lock (241), a rotating shaft (242), and a rotating buckle (243). The combination lock (241) is mounted on the first rotating seat (22). One end of the rotating shaft (242) is connected to the combination lock (241), and the other end of the rotating shaft (242) passes through the first rotating seat (22) and is connected to the rotating buckle (243). The rotating buckle (243) can rotate together with the combination lock (241) and the rotating shaft (242) so that the rotating buckle (243) can be locked by the base (21) or can be disengaged from the base (21).
3. The military-grade double-lock combination lock according to claim 2, characterized in that: It also includes a buckle (3), which is provided on the base (21) and a part of the buckle (3) extends out of the base (21). The rotating buckle (243) can be locked by the buckle (3) or can be released from the buckle (3).
4. The military-grade double-lock combination lock according to claim 3, characterized in that: The first rotating seat (22) is provided with a first slot (221), and the base (21) is provided with a second slot (211) at the corresponding position. The buckle (3) is provided with a protrusion (31) on its side. The protrusion (31) is located in the first slot (221), and the buckle (3) and the protrusion (31) can move along the base (21). The protrusion (31) can be locked in the second slot (211), or the protrusion (31) can be disengaged from the second slot (211) after moving a set distance.
5. The military-grade double-lock combination lock according to claim 4, characterized in that: One end of the buckle (3) is also provided with a spring (4). The spring (4) is in a compressed state. One end of the spring (4) abuts against the base (21), and the other end abuts against the buckle (3).
6. The military-grade double-lock combination lock according to claim 5, characterized in that: On the base (21), an arc-shaped portion (212) is provided at the first slot (221). When the buckle (3) moves along the first slot (221), the arc-shaped portion (212) can guide the buckle (3) to move.
7. The military double-locking combination lock according to claim 6, characterized in that: The buckle (3) includes an annular portion (32) and a pressing portion (33). The annular portion (32) is located in the base (21). One end of the pressing portion (33) extends into the base (21) and is connected to the annular portion (32). The other end of the pressing portion (33) is bent. The rotating buckle (243) can be locked by the annular portion (32), or the rotating buckle (243) can disengage from the annular portion (32) after rotating at a set angle.
8. The military double-lock combination lock according to any one of claims 1 to 7, characterized in that: The second rotating seat (23) is provided with a slot (231), and the buckle body (1) is provided with a horizontal rod (11). The slot (231) can be locked in the horizontal rod (11).