A socket type combination lock

Abstract

This utility model discloses a plug-in combination lock, employing a modular plug-in structure design. It mainly includes an outer shell with openings at both ends, a protective sleeve, an assembly plate with slots, and a mechanism assembly. An observation hole is provided on the front of the outer shell. The internally plugged assembly plate integrates the combination lock components and the mechanism assembly. A rotating shaft with a number wheel and a linkage pressure block are located at the bottom. The mechanism assembly, consisting of a rocker arm, a spring steel rod, and steel balls, is located at the top. The rocker arm is connected to the rotating shaft via a support plate, and the steel ball at the end of the steel rod can be inserted into the slot's limiting hole to form a mechanical interlock. When the combination is correct, the pressure block drives the rocker arm to rise, releasing the steel rod's constraint and allowing the lock beam to be inserted or removed. In the case of an incorrect combination, the rocker arm's protrusion engages in the gap between the steel rod, and the spring forces the steel ball to be limited and locked. The observation hole allows the combination to be seen, the protective sleeve cushions impacts, the plug-in structure simplifies the assembly process, and the steel ball limiting and linkage triggering mechanism enhances the level of security. It also features a compact structure, convenient maintenance, and strong resistance to damage.

Description

Technical Field

[0001] This utility model belongs to the field of combination lock technology, specifically relating to a socket-type combination lock. Background Technology

[0002] In recent years, combination locks have been widely used in luggage, logistics, and personal storage due to their convenience of not requiring physical keys. Traditional mechanical combination locks mostly use a linkage structure between the number wheel and the bolt, unlocking by rotating the number wheel to align with the preset combination. Most existing combination locks employ a multi-layered nested structure, with components fixed by screws or welding, resulting in cumbersome assembly and difficult disassembly for maintenance. Traditional limit mechanisms are prone to deformation or detachment under external impact, leading to misalignment of the combination wheel or brute-force cracking. Some lock casings lack protective design, allowing dust or foreign objects to enter through external openings, affecting the lifespan of internal mechanical components. Furthermore, the alignment accuracy between the number wheel and the viewing hole in some locks is insufficient, potentially causing visual discrepancies when users adjust the combination. Utility Model Content

[0003] The purpose of this invention is to provide a socket-type combination lock to solve the problems of cumbersome assembly process and difficult maintenance in the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a socket-type combination lock, including a shell, the shell having an open structure at both ends and a protective sleeve, a plurality of first observation holes on the front side of the shell, an assembly plate inserted inside the shell, slots at both ends of the assembly plate, a first limiting hole at the upper part of the slots, a mechanism assembly installed on the upper part of the assembly plate, and a baffle at the upper part of the mechanism assembly.

[0006] The mechanism includes a rocker plate with a hole corresponding to the first observation hole. Support plates are provided at both ends of the rocker plate and are rotatably connected to the assembly plate. A protrusion is provided at the front end of the rocker plate, and two steel rods are symmetrically arranged on both sides of the protrusion. One end of the steel rod is connected by a spring, and the other end of the steel rod is provided with a steel ball that can partially extend into the first limiting hole.

[0007] In a further technical solution, a cryptographic component is installed on the lower part of the assembly plate. The cryptographic component includes a rotating shaft, both ends of which are rotatably mounted on the assembly plate. Several digital wheels are coaxially mounted on the rotating shaft.

[0008] In a further technical solution, a pressure block is fixedly connected to the rotating shaft near the support plate, and the pressure block rotates with the rotating shaft.

[0009] In a further technical solution, the digital wheel can be embedded into the first observation hole and the aperture.

[0010] In a further technical solution, the diameter of the first limiting hole is smaller than the diameter of the steel ball.

[0011] In a further technical solution, the top and bottom of the housing are provided with a socket corresponding to the slot, and the socket matches the slot.

[0012] In a further technical solution, the top and bottom of the protective sleeve are provided with second insertion holes corresponding to the slot, and the second insertion holes match the slot.

[0013] In a further technical solution, a gasket is provided inside the outer casing, and the gasket is installed at the rear of the assembly plate.

[0014] In a further technical solution, a steel plate is provided between the assembly plate and the outer shell, and the steel plate corresponds to the slot with a third insertion hole, which is matched with the slot.

[0015] In a further technical solution, the protective sleeve, outer shell, and assembly plate are fixed by screws.

[0016] Beneficial effects:

[0017] This utility model uses the plug-in connection of the outer shell, protective cover and assembly plate and the screw fixing method to reduce the assembly difficulty. Combined with the linkage mechanism of rocker, steel bar, steel ball and limit hole, it can achieve rapid installation and maintenance while ensuring high safety. Attached Figure Description

[0018] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 A schematic diagram of the external structure of a socket-type combination lock provided for an embodiment of this utility model;

[0020] Figures 2 to 3 A schematic diagram of the internal structure of a socket-type combination lock provided in an embodiment of this utility model;

[0021] Figure 4 for Figure 2 Schematic diagram of the AA section;

[0022] Figure 5 for Figure 2 Schematic diagram of the middle section of BB;

[0023] Figures 6 to 8 This is a schematic diagram of the insertion hole of a socket-type combination lock provided for an embodiment of the present utility model.

[0024] in:

[0025] 1. Outer shell; 2. Protective cover; 3. Assembly plate; 4. Mechanism assembly; 5. Password assembly; 6. Steel plate; 7. Washer; 8. Screw; 101. Observation hole; 102. Socket one; 201. Socket two; 301. Slot; 302. Limiting hole; 303. Baffle; 401. Rocker; 402. Hole; 403. Support plate; 404. Protrusion; 405. Steel rod; 406. Spring; 407. Steel ball; 501. Shaft; 502. Number wheel; 503. Pressure block; 601. Socket three. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example:

[0028] like Figures 1 to 8 As shown, this utility model embodiment provides a socket-type combination lock, including a shell 1. The shell 1 has open structures at both ends and is provided with protective sleeves 2. The front side of the shell 1 has several observation holes 101. An assembly plate 3 is inserted into the shell 1. The assembly plate 3 has slots 301 at both ends. The upper part of the slots 301 has a limiting hole 302. A mechanism assembly 4 is installed on the upper part of the assembly plate 3. A baffle 303 is provided on the upper part of the mechanism assembly 4. The mechanism assembly 4 includes... A rocker arm 401 is provided with a hole 402 corresponding to the observation hole 101. Support plates 403 are provided at both ends of the rocker arm 401. The support plates 403 are rotatably connected to the assembly plate 3. A protrusion 404 is provided at the front end of the rocker arm 401. Two steel rods 405 are symmetrically arranged on both sides of the protrusion 404. One end of the steel rod 405 is connected by a spring 406. The other end of the steel rod 405 is provided with a steel ball 407 that can partially extend into the limiting hole 302.

[0029] This embodiment of the invention designs the outer shell 1 as a cylindrical structure with openings at both ends, and elastic protective sleeves 2 fitted at both ends. Multiple rectangular observation holes 101 are opened on the front side of the outer shell 1. An assembly plate 3 with slots 301 is inserted inside. A limiting hole 302 is provided above the slot 301. A mechanical assembly 4 consisting of a rocker 401, a support plate 403, a spring 406, a steel rod 405, and a steel ball 407 is installed on the top of the assembly plate 3. The rocker 401 is rotatably connected to the assembly plate 3 via the support plate 403. One end of the steel rod 405 is connected to the spring 406, and the steel ball 407 at the other end of the steel plate 6 can be partially embedded in the limiting hole 302. A baffle 303 covers the top of the rocker 401 to prevent foreign objects from entering. The protective sleeves 2 at both ends of the outer shell 1 buffer external impacts and extend the life of the lock body. The observation holes 101 allow the password to be seen. The rocker 401, in conjunction with the steel plate 6 and the steel ball 407, forms a mechanical lock, providing high security. The insert-type assembly plate 3 simplifies the internal structure and facilitates modular maintenance.

[0030] In one feasible implementation scheme, such as Figure 2 and Figure 3 As shown, a password component 5 is installed on the lower part of the assembly plate 3. The password component 5 includes a rotating shaft 501, with both ends of the rotating shaft 501 rotatably mounted on the assembly plate 3. Several number wheels 502 are coaxially mounted on the rotating shaft 501. By installing the rotating shaft 501 on the lower part of the assembly plate 3, with both ends of the rotating shaft 501 movably connected to the assembly plate 3, and mounting multiple number wheels 502 with numerical scales on the rotating shaft 501, the spacing between the number wheels 502 is aligned with the observation hole 101. The password setting function is realized through the rotating shaft 501 and the number wheels 502. The number wheels 502 display the current password position through the observation hole 101, making the operation intuitive, supporting multiple combinations of numerical passwords, and increasing the difficulty of cracking.

[0031] In one feasible implementation scheme, such as Figure 5 As shown, a pressure block 503 is fixedly connected to the rotating shaft 501 near the support plate 403, and the pressure block 503 rotates with the rotating shaft 501. By fixing the pressure block 503 to one end of the rotating shaft 501 near the support plate 403, the pressure block 503 is elongated and can contact the rocker 401 when rotating with the rotating shaft 501. When the pressure block 503 rotates, it pushes the rocker 401, triggering the protrusion 404 of the rocker 401 to move away from the steel rod 405, so that the steel rod 405 can squeeze the spring 406 together. When the rocker 401 is not triggered, the protrusion 404 of the rocker 401 is placed between the steel rods 405, and the steel rods 405 cannot squeeze the spring 406. A simple triggering mechanism can achieve the locking effect.

[0032] In one feasible implementation scheme, such as Figures 1 to 3As shown, the digital wheel 502 can be embedded in the observation hole 101 and the hole 402. By setting the diameter of the observation hole 101 and the hole 402 to be smaller than that of the digital wheel 502, the wheel body is partially embedded in the observation hole 101 and the hole 402 of the rocker arm 401 of the outer casing 1, with only a portion of the numbers exposed. This avoids misalignment of the digital wheel 502, ensures the accuracy of password alignment, hides the non-display area, and prevents external forces from directly damaging the internal structure.

[0033] In one feasible implementation scheme, such as Figure 2 As shown, the diameter of the limiting hole 302 is smaller than the diameter of the steel ball 407. By setting the diameter of the limiting hole 302 to be smaller than the diameter of the steel ball 407, a portion of the steel ball 407 can be embedded in the limiting hole 302. The partial embedding of the steel ball 407 forms a self-locking mechanism, making it difficult for it to come out during vibration or tilting, resulting in strong stability.

[0034] In one feasible implementation scheme, such as Figure 6 As shown, the top and bottom of the outer casing 1 are provided with insertion holes 102 corresponding to the slot 301, and the top and bottom of the protective sleeve 2 are provided with insertion holes 201 corresponding to the slot 301. The insertion holes 102 and 201 match the slot 301. By opening insertion holes 102 at the top and bottom of the outer casing 1 and corresponding insertion holes 201 at the protective sleeve 2, and matching the size of the slot 301 with the insertion holes, the lock beam can be smoothly inserted into the lock body.

[0035] In one feasible implementation scheme, such as Figure 4 and Figure 5 As shown, a gasket 7 is provided inside the outer casing 1, and the gasket 7 is installed at the rear of the assembly plate 3. By adding the gasket 7 at the rear of the assembly plate 3, the number wheel 502 can protrude a part of the outer casing 1, which facilitates the movement of the combination wheel, and also increases the fit between the assembly plate 3 and the interior of the outer casing 1, reducing looseness inside the lock body and wear on parts.

[0036] In one feasible implementation scheme, such as Figure 8 As shown, a steel plate 6 is provided between the assembly plate 3 and the outer shell 1. The steel plate 6 has a corresponding insertion hole 601 in the slot 301, and the insertion hole 601 matches the slot 301. By providing a steel plate 6 between the upper part of the assembly plate 3 and the outer shell 1, and having an insertion hole 601 on the steel plate 6 aligned with the slot 301 of the assembly plate 3, the insertion hole 601 guides the locking beam into the slot 301 of the assembly plate 3, reducing the direct impact of the locking beam on the slot 301 and preventing damage to the slot 301.

[0037] In one feasible implementation scheme, such as Figure 7 As shown, the protective sleeve 2, outer shell 1, and assembly plate 3 are fixed together by screws 8. By using screws 8 to fix the protective sleeve 2, outer shell 1, and assembly plate 3 together, the overall structural integrity is improved, and accidental separation of the plug-in components is prevented.

[0038] In a specific implementation of the socket-type combination lock provided in this utility model embodiment, steel balls 407 are respectively installed at the limiting holes 302 of the upper slots 301 at both ends of the assembly plate 3. Steel rods 405 that abut against the outer side of the steel balls 407 are installed. The ends of the two steel rods 405 away from the steel balls 407 are elastically connected by springs 406. A digital wheel 502, a pressure block 503, and a rocker plate 401 with a connecting piece are installed on the rotating shaft 501. The rotating shaft 501 is then installed onto the assembly plate 3. The protrusion 404 at the front end is inserted into the gap between adjacent steel bars 405, which are supported by spring 406. A baffle 303 is placed on the upper part of the assembly plate 3, and the top-fitting steel plate 6 is inserted into the outer shell 1. The digital wheel 502 is aligned with the observation hole 101 of the outer shell 1, and a shim 7 is inserted between the rear of the assembly plate 3 and the outer shell 1 to ensure that the digital wheel 502 is effectively embedded in the observation hole 101 for positioning. Finally, protective sleeves 2 are fitted on both ends of the outer shell 1, and screws 8 are used to fix the protective sleeves 2, the outer shell 1, and the assembly plate 3. The password is set by rotating the digital wheel 502. The unlocking mechanism is as follows: when the password is not matched correctly, the rocker 401 hangs down naturally under the action of gravity, and its front protrusion 404 is inserted into the locking gap formed by the adjacent steel bars 405. At this time, the steel bars 405 are pressed against the steel ball 407 by the tension of the spring 406, forcing the steel ball 407 to be embedded in the limiting hole 302 of the slot 301 to form a mechanical interlock. When the password is correct, the pressure block 503 presses down on the rear of the rocker arm 401, raising its front end. The protrusion 404 disengages from the gap in the steel rod 405, allowing the steel rod 405 to move axially. At this time, pulling or pushing the locking beam will push the steel ball 407 out of the limiting hole 302. The steel ball 407 pushes the steel rod 405 to compress the spring 406, causing displacement and allowing the locking beam to be freely inserted and removed. After the locking beam completes the insertion and removal action, the spring 406 pushes the steel rod 405 back to its original position, and the steel ball 407 re-embeds into the limiting hole 302 to complete the locking. This design, through the precise coordination of the rocker arm 401, the steel rod 405, and the steel ball 407, achieves modular rapid assembly and convenient maintenance while ensuring a high level of security protection performance.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A socket-type combination lock, characterized in that: Includes an outer shell (1), the outer shell (1) has an open structure at both ends and is provided with a protective sleeve (2), the front side of the outer shell (1) is provided with several observation holes (101), an assembly plate (3) is inserted inside the outer shell (1), the assembly plate (3) is provided with slots (301) at both ends, the upper part of the slots (301) is provided with a limiting hole (302), the upper part of the assembly plate (3) is installed with a mechanism assembly (4), and the upper part of the mechanism assembly (4) is provided with a baffle (303); The mechanism assembly (4) includes a rocker (401), which has a hole (402) corresponding to the observation hole (101). Support plates (403) are provided at both ends of the rocker (401). The support plates (403) are rotatably connected to the assembly plate (3). A protrusion (404) is provided at the front end of the rocker (401). Two steel rods (405) are symmetrically arranged on both sides of the protrusion (404). One end of the steel rod (405) is connected by a spring (406), and the other end of the steel rod (405) is provided with a steel ball (407) that can partially extend into the limiting hole (302).

2. A socket-type combination lock according to claim 1, characterized in that: The lower part of the assembly plate (3) is equipped with a password component (5), which includes a rotating shaft (501). Both ends of the rotating shaft (501) are rotatably mounted on the assembly plate (3), and several digital wheels (502) are coaxially mounted on the rotating shaft (501).

3. A socket-type combination lock according to claim 2, characterized in that: A pressure block (503) is fixedly connected to the rotating shaft (501) near the support plate (403), and the pressure block (503) rotates with the rotating shaft (501).

4. A socket-type combination lock according to claim 2, characterized in that: The digital wheel (502) can be embedded into the observation hole (101) and the hole (402).

5. A socket-type combination lock according to claim 1, characterized in that: The diameter of the limiting hole (302) is smaller than the diameter of the steel ball (407).

6. A socket-type combination lock according to claim 1, characterized in that: The outer casing (1) has a socket (102) at the top and bottom that corresponds to the slot (301), and the socket (102) matches the slot (301).

7. A socket-type combination lock according to claim 1, characterized in that: The protective sleeve (2) has two insertion holes (201) at the top and bottom that correspond to the slot (301), and the insertion holes (201) match the slot (301).

8. A socket-type combination lock according to claim 1, characterized in that: A gasket (7) is provided inside the outer casing (1), and the gasket (7) is installed at the rear of the assembly plate (3).

9. A socket-type combination lock according to claim 1, characterized in that: A steel plate (6) is provided between the assembly plate (3) and the outer shell (1), and the steel plate (6) has a corresponding insertion hole (601) to the slot (301), and the insertion hole (601) matches the slot (301).

10. A socket-type combination lock according to claim 1, characterized in that: The protective sleeve (2), the outer shell (1), and the assembly plate (3) are fixed by screws (8).

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