A highly impact-resistant rotary latch strike

Abstract

The utility model provides a kind of high impact resistance rotary lock locking plate, belong to mechanical lock technical field;It is integrally formed using metal die casting process, including locking structure, brake tail plate and connecting platform.Locking structure is similar to three prism, including shaft hole, limiting column, sliding surface, spring leaf installation slot and tubular protrusion;Brake tail plate and locking structure form the shape of 'L', be equipped with dovetail first driving part and arc-shaped gap second driving part;Connecting platform realizes the stable connection of locking structure and brake tail plate.Shaft hole is matched with the locking plate shaft in lock body, spring leaf installation slot is arranged spring leaf to push sliding surface to adhere rotary lock tongue, limiting column is resisted and the limiting portion of rotary lock tongue is realized locking, brake tail plate receives driving force to complete unlocking.The utility model's advantage lies in strong impact resistance, smooth operation, wide adaptation range, long service life, economic and structural stability.

Description

Technical Field

[0001] This application relates to the field of mechanical lock technology, and more specifically, to a highly impact-resistant rotary lock stop plate. Background Technology

[0002] In the modern lock industry, rotary locks, with their unique transmission structure, possess a stability advantage far exceeding that of traditional locks. Their robustness, durability, and reliable protective performance have led to their widespread application in various core scenarios, including civil buildings, industrial equipment, transportation, and furniture and appliances. The locking plate, as the core force-bearing and transmission component of the rotary lock, directly bears key functions such as bolt limiting, impact buffering, and power transmission. Its stability and strength are particularly important, directly determining the overall security level, reliability, and service life of the rotary lock.

[0003] However, the mainstream locking plates currently used in rotary locks on the market generally suffer from core technological defects, severely restricting the full realization of the rotary lock's stability advantage. First, the structural design lacks optimization; the locking structure is mostly a simple cuboid or cylindrical shape, with weak impact force dispersion capability, and the mating parts with the rotary lock tongue lack reasonable guidance and fitting design, making them prone to jamming and misalignment, exacerbating structural wear. Second, the drive unit structure is simple, with a narrow range of compatibility, and there is a contradiction between lightweight and economical design; either blindly adding materials leads to increased costs, or reducing materials and weight sacrifices stability.

[0004] As societal demands for lock security continue to rise, and the application scenarios for rotary locks expand, the insufficient stability and strength of existing locking plates are becoming increasingly prominent, posing a key bottleneck to the technological upgrade of rotary locks. Therefore, there is an urgent need to develop a locking plate product that combines high strength and high stability. By optimizing the structure and manufacturing process, the shortcomings of existing technologies can be overcome, fully releasing the stability advantages of rotary locks and providing more reliable lock solutions for various scenarios. Summary of the Invention

[0005] This utility model provides a highly impact-resistant rotary lock locking plate, including a locking structure and a brake tail plate; the locking structure is generally columnar, including a cylindrical shaft hole axially disposed in the middle and a limiting post axially disposed on one side thereon; the brake tail plate is strip-shaped and disposed on the side of the locking structure opposite to the limiting post, the extension direction of the brake tail plate is perpendicular to the extension direction of the column of the locking structure, and the brake tail plate and the locking structure form an "L" shaped structure.

[0006] Preferably, the locking structure is in the shape of a triangular prism, and the limiting post is set on the side edge of the locking structure.

[0007] The locking plate is rotatably connected to the locking plate shaft of the lock body through a shaft hole, and is assembled as a whole into the lock body, forming a linkage with the rotating bolt inside the lock body; when the rotating bolt moves to the locking position, the limiting post of the locking structure abuts against the limiting part of the rotating bolt, forming a rigid limit, restricting the bolt from retraction, and realizing the locking state of the lock; when the lock is subjected to external impact force, the columnar limiting post disperses the impact force to the entire lock body, avoiding local stress concentration; the triangular prism-like locking structure enhances its resistance to deformation through its shape, further enhancing the impact bearing effect; the driving force acts on the brake tail plate, and through the lever arm at one end of the "L"-shaped structure, it drives the locking structure to rotate around the shaft hole, and the limiting post on the locking structure abuts or disengages from the limiting part of the rotating bolt by rotation, completing the locking or unlocking.

[0008] The locking plate also includes a connecting platform; the locking structure and the brake tail plate are connected by the connecting platform, which is a boss-like structure; its lower bottom surface is connected to the side of the locking structure; and its upper bottom surface is connected to one end of the brake tail plate.

[0009] The connecting platform plays a role in fixing the "L"-shaped overall structure. As the force transmission medium between the locking structure and the brake tail plate, it evenly distributes the external driving force received by the brake tail plate into surface contact force and transmits it to the locking structure, avoiding local stress concentration and transmission jamming. In addition, its own structure enhances the rigidity of the connection, and together with the locking structure, it improves the overall impact resistance and transmission stability of the locking plate.

[0010] The locking structure also includes a sliding surface disposed on its side, the sliding surface being an arc-shaped concave surface disposed on one side of the limiting post.

[0011] The sliding surface fits snugly against the cylindrical protrusion of the rotating bolt sliding part on the outside. During the rotation of the bolt, the bolt sliding part slides smoothly along the arc-shaped concave surface, achieving smooth linkage between the bolt and the locking structure. At the same time, the curved surface contact restricts the radial displacement of the bolt, ensuring accurate movement trajectory. In conjunction with the limit post, it enhances the stability of the locking and unlocking process.

[0012] The locking structure also includes a spring plate mounting groove; the spring plate mounting groove is a square groove that extends from the sliding surface through the side of the shaft hole and does not extend through the column of the locking structure.

[0013] The spring plate mounting slot is used to assemble the spring plate; through the elastic force of the spring plate, the sliding surface is pushed to fit tightly against the rotating bolt. At the same time, when the bolt rotates to the locked position, the elastic reset of the spring plate drives the locking structure to rotate automatically, so that the limit post accurately abuts against the bolt limit part to complete the locking action.

[0014] The locking structure also includes a tubular protrusion; the tubular protrusion is provided with two holes around the shaft holes on the two bottom surfaces of the locking structure.

[0015] The tubular protrusion directly restricts the displacement of the locking structure along the shaft hole direction by engaging with the axial limiting mechanism of the lock body. At the same time, the protrusion reduces the contact area between the lock shell and the locking structure, thereby reducing the frictional resistance when the two rotate relative to each other and ensuring smooth movement of the locking structure.

[0016] The brake tail plate includes a first driving part and a second driving part; the first driving part is located at the end of the brake tail plate away from the locking structure and is in the shape of a dovetail; the second driving part is located on one side of the middle of the brake tail plate and is in the shape of an arc-shaped notch.

[0017] The first and second drive units are matched with different types of drive components within the lock body. After receiving the driving force, they are transmitted to the locking structure through the brake tail plate to achieve linkage control of locking and unlocking, adapting to various drive scenario requirements.

[0018] The locking plate is manufactured using a one-piece die-casting process, which integrates all components such as the locking structure, brake tail plate, connecting platform, and tubular protrusion into a complete and indivisible structure. The integrated design eliminates gaps between components, ensures positional accuracy and connection rigidity between structures, and enhances the overall strength and impact resistance of the locking plate.

[0019] The beneficial effects of this utility model are as follows: 1. Excellent impact resistance and high locking reliability The locking structure adopts a triangular prism-like design. Compared with the traditional cylindrical or cuboid structure, the geometric shape of the triangular prism can improve its own resistance to deformation and can more evenly distribute the external impact force. The "L"-shaped overall structure transmits the impact force to the entire lock body through the lever arm design, avoiding local stress concentration. The boss-like structure and inclined transition design of the connecting platform further strengthen the rigidity of the connection between the locking structure and the brake tail plate, preventing the connection from breaking or deforming. This invention uses high-strength alloy steel as the material. Alloy steel itself has the characteristics of high hardness and high toughness. Combined with the metal die-casting one-piece molding process, it eliminates the gaps between the parts, making the overall structure of the locking plate more stable and without weak points. Compared with the assembled structure, the one-piece molding can improve the impact resistance of the locking plate, effectively resist violent impacts, and reduce the risk of lock failure. 2. Smooth and stable operation, reducing the probability of failure. The sliding surface and the cylindrical protrusion of the sliding part of the rotating bolt form a close fit; the spring plate continuously pushes the sliding surface and the sliding part of the bolt to fit tightly. During the rotation of the rotating bolt, the sliding part of the bolt slides smoothly along the arc-shaped concave surface, which reduces the frictional resistance between the rotating bolt and the sliding surface and avoids the fit deviation caused by gaps, ensuring that the bolt slides smoothly without jamming during locking and unlocking. The tubular protrusions not only restrict the axial movement of the locking plate and ensure the fitting accuracy between the locking plate and the bolt, but also reduce the contact area between the lock case and the locking structure, reduce frictional loss during relative rotation, make the locking plate rotate more flexibly, further improve the operating feel, and reduce the probability of failure caused by excessive friction. 3. Widely adaptable and suitable for various scenarios. The brake tailplate is equipped with both a first drive unit and a second drive unit. The two drive unit structures can be matched with different types of drive components in the lock body, making it suitable for lock body designs in various scenarios such as household door locks, industrial equipment locks, and outdoor protective locks. 4. Lightweight design and cost optimization, balancing economic efficiency. The spring plate mounting slot is designed to penetrate only the side of the shaft hole and not the locking structure column. While meeting the spring plate assembly requirements, it reduces unnecessary material usage, achieving a lightweight design for the locking plate and reducing energy consumption during transportation and assembly. At the same time, the reduction in material usage directly reduces raw material costs, and the stability and performance of the locking plate are not affected by the structural simplification. This enhances product competitiveness and provides an economic advantage for mass production. Attached Figure Description Figure 1 This is a three-dimensional structural diagram of the locking plate.

[0020] Figure 2 This is a three-dimensional structural diagram of the locking plate from another angle.

[0021] Figure 3 This is a three-dimensional structural diagram of the locking plate from another angle.

[0022] Figure 4 This is a three-dimensional structural diagram showing the connection between the locking plate and the rotating bolt (in the unlocked state).

[0023] Figure 5 for Figure 4 Top view.

[0024] Figure 6 A three-dimensional structural diagram showing the connection between the locking plate and the rotary latch (locked state).

[0025] Figure 7 for Figure 6 Top view. Detailed Implementation

[0026] The technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings. In the description of this application, the terms "first", "second", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figure 1As shown, a highly impact-resistant rotary lock locking plate is made of high-strength alloy steel and is manufactured using a metal die-casting one-piece molding process; it includes a locking structure 10, a brake tail plate 20, and a connecting platform 21.

[0028] like Figure 1-3 As shown, the locking structure 10 is generally in the shape of a triangular prism, including a shaft hole 11, a limiting post 15, a sliding surface 12, a spring plate mounting groove 13, and a tubular protrusion 14. The shaft hole 11 is a cylindrical hollow hole located in the middle of the locking structure 10, and its extension direction is consistent with the extension direction of the column of the locking structure 10. The limiting post 15 is located on the side edge of the column of the locking structure 10, and is a semi-cylinder with the same height as the column of the locking structure 10, with its arc surface facing outward. The sliding surface 12 is an arc-shaped concave surface located on the side of the column of the locking structure 10. The upper part is located on one side of the limiting post 15, and its arc surface is smoothly connected to the arc surface of the limiting post 15 to ensure that the rotating lock tongue moves smoothly from the sliding surface 12 to the limiting post 15; the spring plate mounting groove 13 is a square groove that is set through the side of the shaft hole from the sliding surface 12 and does not penetrate the post of the locking structure 10; the spring plate mounting groove 13 is equipped with a spring plate that pushes the sliding surface 12 to fit tightly against the rotating lock tongue; the tubular protrusion 14 is provided with two holes around the shaft hole 11 on the two bottom surfaces of the locking structure 10 respectively.

[0029] The brake tail plate 20 is a strip-shaped plate and is disposed on the side of the locking structure 10 opposite to the limiting post 15. The extension direction of the brake tail plate 20 is perpendicular to the extension direction of the locking structure 10 post, forming an "L" shaped integral structure with the locking structure 10. The brake tail plate 20 includes a first driving part 22 and a second driving part 23. The first driving part 22 is disposed at the end of the brake tail plate 20 away from the locking structure 10 and is in the shape of a dovetail. The second driving part 23 is disposed on one side of the middle part of the brake tail plate 20 and is in the shape of an arc-shaped notch.

[0030] The connecting platform 21 is a boss-like structure; its lower bottom surface is connected to the side of the locking structure 10 away from the limiting post 15; its upper bottom surface is connected to one end of the brake tail plate 20; the locking structure 10 and the brake tail plate 20 are connected through the connecting platform 21; one side of the connecting platform 21 is coplanar with the plate surface of the brake tail plate 20, and the opposite side is inclined to form a transitional connection between the other plate surface of the brake tail plate 20 and the side surface of the locking structure 10.

[0031] The working principle of this embodiment is as follows: The locking plate of the lock body passes through the cylindrical shaft hole 11 in the middle of the locking structure 10, allowing the locking plate to rotate around the shaft hole 11. Simultaneously, the tubular protrusions 14 around the shaft holes 11 on both bottom surfaces of the locking structure 10 engage with corresponding limiting structures inside the lock body, restricting the locking plate's axial movement along the shaft hole 11 and ensuring its fixed position within the lock body. This prevents axial displacement from affecting the fitting accuracy with the rotating bolt. Furthermore, a spring is pre-assembled in the spring plate mounting groove 13. The elastic force of the spring continuously applies preload towards the rotating bolt, ensuring a tight fit between the sliding surface 12 and the rotating bolt. When the rotating bolt moves to the locked position, the cylindrical protrusion on the outer side of the rotating bolt first contacts the arc-shaped concave sliding surface 12 of the locking structure 10. Because the arc surface of the sliding surface 12 and the arc surface of the limiting post 15 are smoothly connected, and the preload of the spring plate pushes the sliding surface 12 to fit tightly against the bolt, the bolt can slide smoothly along the sliding surface 12, avoiding jamming. As the bolt continues to rotate, when the limiting part of the bolt moves to the limiting post 15, the elastic restoring force of the spring plate drives the locking structure 10 to rotate around the shaft hole 11, causing the arc surface of the limiting post 15 to abut against the limiting part of the bolt, forming a rigid limit, ultimately achieving reliable locking of the lock. Figure 6-7 As shown.

[0032] During unlocking, depending on the different drive structures of the lock body, the external driving force can act on the first drive part 22 or the second drive part 23 of the brake tail plate 20, transmitting the driving force to the brake tail plate 20. After receiving the driving force, the brake tail plate 20 transmits the force evenly to the locking structure 10 through the connecting platform 21, causing the locking structure 10 to rotate in the opposite direction around the shaft hole 11, so that the limiting post 15 disengages from the limiting part of the lock tongue. At this time, the lock tongue can slide in the opposite direction along the sliding surface 12 until it returns to the unlocked position, completing the entire unlocking process. Figure 4-5 As shown. The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A highly impact-resistant rotary lock locking plate, characterized in that, It includes a locking structure (10) and a brake tail plate (20); the locking structure (10) is columnar in shape, including a cylindrical shaft hole (11) axially disposed in the middle and a limiting post (15) axially disposed on one side thereon; the brake tail plate (20) is strip-shaped and is disposed on the side of the locking structure (10) opposite to the limiting post (15). The extension direction of the brake tail plate (20) is different from the extension direction of the column of the locking structure (10). The brake tail plate (20) and the locking structure (10) form an "L" shaped structure.

2. The highly impact-resistant rotary lock locking plate according to claim 1, characterized in that, The locking structure (10) is generally in the shape of a triangular prism, and the limiting post (15) is disposed on the side edge of the locking structure (10).

3. The highly impact-resistant rotary lock locking plate according to claim 1, characterized in that, It also includes a connecting platform (21); the locking structure (10) and the brake tail plate (20) are connected by the connecting platform (21), the connecting platform (21) is a boss-like structure; its lower bottom surface is connected to the side of the locking structure (10); its upper bottom surface is connected to one end of the brake tail plate (20).

4. A highly impact-resistant rotary lock locking plate according to claim 2, characterized in that, The locking structure (10) also includes a sliding surface (12) disposed on its side, the sliding surface (12) being an arc-shaped concave surface disposed on one side of the limiting post (15).

5. A highly impact-resistant rotary lock locking plate according to claim 4, characterized in that, The locking structure (10) also includes a spring plate mounting groove (13); the spring plate mounting groove (13) is a square groove that extends from the sliding surface (12) through the side of the shaft hole (11) and does not extend through the column of the locking structure (10).

6. The highly impact-resistant rotary lock locking plate according to claim 1, characterized in that, The locking structure (10) further includes a tubular protrusion (14); the tubular protrusion (14) is provided with two holes around the shaft hole (11) on the two bottom surfaces of the locking structure (10).

7. A highly impact-resistant rotary lock locking plate according to claim 1, characterized in that, The brake tail plate (20) includes a first drive part (22); the first drive part (22) is disposed at one end of the brake tail plate (20) away from the locking structure (10) and is in the shape of a swallowtail.

8. A highly impact-resistant rotary lock locking plate according to claim 1, characterized in that, The brake tail plate (20) also includes a second drive part (23); the second drive part (23) is disposed on one side of the middle part of the brake tail plate (20) and is in the shape of an arc-shaped notch.

9. A highly impact-resistant rotary lock locking plate according to any one of claims 1-8, characterized in that, The locking plate is integrally formed.

Images