A mechanical gravity self-locking door lock
By using a limit plate and a rotating plate structure, combined with the weight of the bolt, the design of the mechanical self-locking door lock is simplified, solving the problems of complex structure and high cost, and achieving a stable self-locking effect, which is suitable for the livestock breeding field.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO DEDAIKANG ANIMAL HUSBANDRY MACHINERY CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-30
Smart Images
Figure CN224432282U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of door lock equipment, specifically relating to a mechanical gravity self-locking door lock. Background Technology
[0002] The core function of a self-locking door lock is automatic locking. It's a type of door lock that combines security, convenience, and intelligence. When the door is closed, the lock automatically locks itself through an internal mechanical structure or electronic system, without requiring manual operation from the user. This design aims to enhance security and prevent the door from being accidentally opened after it has closed.
[0003] In the livestock or aquaculture sector, most livestock are currently raised indoors. During the breeding process, self-locking door locks are generally required. Existing technologies for self-locking door locks are generally divided into electronic door locks and mechanical door locks. Since electronic door locks are more expensive, mechanical self-locking door locks are often chosen. Most of the existing mechanical self-locking door locks have complex structures, requiring many components to achieve automatic locking. Furthermore, it is difficult to guarantee the accuracy of use, and the operation is cumbersome and inconvenient.
[0004] Therefore, in order to solve the above problems, this utility model provides a mechanical gravity self-locking door lock that is simple in structure, easy to operate, and has a stable self-locking effect. Utility Model Content
[0005] The purpose of this invention is to provide a mechanical gravity self-locking door lock to solve the problems of complex structure, inconvenient installation and use, high cost, and poor locking effect of existing self-locking door locks.
[0006] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:
[0007] A mechanical gravity self-locking door lock is provided. The self-locking door lock includes a door lock body, a handle, and a self-locking assembly. The handle is located on both sides of the door lock body. The self-locking assembly is located on one side of the door lock body and includes a positioning plate, a limiting plate, a rotating plate, a bolt, and a hook plate. The positioning plate is placed on the side wall of the door lock body. The rotating plate is connected to the handle and rotatably connected to the positioning plate. The side wall of the bolt is fitted with the rotating plate. One side of the bolt is rotatably connected to the edge of the positioning plate, and the other side is engaged with the hook plate. The limiting plate is placed on the surface of the positioning plate and surrounds the rotating plate and the bolt.
[0008] In a preferred embodiment of this application, the limiting plate is a U-shaped plate with through holes on its surface to facilitate the connection of the handle to the rotating plate via the positioning plate.
[0009] In a preferred embodiment of this application, the limiting plate includes a limiting seat and a connecting plate higher than the limiting seat. The limiting seat is located on both sides of the positioning plate to limit the swing of the door bolt, and the connecting plate is connected to the limiting seat.
[0010] In a preferred embodiment of this application, the rotating plate is a triangular plate, which is an isosceles triangle, with the side of the maximum angle connected to the handle, and the opposite side of the angle in contact with the side wall of the door bolt.
[0011] In a preferred embodiment of this application, the hook plate includes a mounting plate and a locking plate. The mounting plate is placed on the door lock body, and the locking plate is located on the side near the positioning plate and has an upward opening. The door bolt is adapted to the opening.
[0012] In a preferred embodiment of this application, the handle includes a lock shaft and a handle body, with the lock shaft passing through the door lock body and the handle body installed at both ends.
[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are:
[0014] This application limits the opening and closing angle of the door bolt by setting a limiting plate structure. On the one hand, it can ensure the accuracy of rotation and avoid the handle and door bolt rotating too much, which would affect the overall self-locking function. On the other hand, the limiting structure can cooperate with the weight of the door bolt itself. By limiting the angle, the self-weight of the door bolt can be used to maximize the automatic locking. This reduces the need for additional complex structures, and the overall structure is simple. Self-locking can be achieved without additional locking devices, making it more convenient to use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a mechanical gravity self-locking door lock provided by this utility model;
[0016] Figure 2 This is a rear view of a mechanical gravity self-locking door lock provided by this utility model;
[0017] Figure 3 This is a schematic diagram of the self-locking component structure of a mechanical gravity self-locking door lock provided by this utility model;
[0018] Figure 4 This is a schematic diagram of the rotation of a mechanical gravity self-locking door lock provided by this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of a mechanical gravity self-locking door lock that rotates in another direction, as provided by this utility model.
[0020] Numbering on the map:
[0021] 1. Door lock body; 2. Handle; 3. Self-locking component; 4. Positioning plate; 5. Limiting plate; 6. Rotating plate; 7. Door bolt; 8. Hook plate; 9. Through hole; 10. Limiting seat; 11. Connecting plate; 12. Rectangular groove; 13. Lock shaft. Detailed Implementation
[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0023] like Figures 1 to 5 As shown, this utility model provides a mechanical gravity self-locking door lock. The self-locking door lock includes a door lock body 1, a handle 2, and a self-locking assembly 3. The handle 2 is disposed on both sides of the door lock body 1. The self-locking assembly 3 is disposed on one side of the door lock body 1 and includes a positioning plate 4, a limiting plate 5, a rotating plate 6, a bolt 7, and a hook plate 8. The positioning plate 4 is disposed on the side wall of the door lock body 1. The rotating plate 6 is connected to the handle 2 and rotatably connected to the positioning plate 4. The side wall of the bolt 7 is fitted with the rotating plate 6. One side of the bolt 7 is rotatably connected to the edge of the positioning plate 4, and the other side is engaged with the hook plate 8. The limiting plate 5 is disposed on the surface of the positioning plate 4 and surrounds the rotating plate 6 and the bolt 7.
[0024] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the door lock body 1 has a square structure, which is simple and easy to install. A positioning plate 4 is installed on one side. Regarding the positioning plate 4, as... Figure 3 As shown, it has a pentagonal structure, which is used to facilitate drilling and installing the door bolt 7 and the limiting plate 5.
[0025] Of course, for the door lock body 1, a mounting position for easy installation of the door lock body 1 can be opened on the surface of the door panel. This method has a higher degree of modularity. Alternatively, the door lock body 1 can be omitted, and handles 2, positioning plates 4, and other structures can be directly installed on both sides of the door panel. This makes installation more convenient and more adaptable. Figure 3 As shown, two holes are opened on the upper and lower sides of the positioning plate 4 for installing the limiting plate 5. One hole is opened at the end away from the hook plate 8 for rotating the bolt 7 to ensure the normal rotation of the bolt 7.
[0026] As a preferred embodiment of this application, such as Figure 3 As shown, the limiting plate 5 is a U-shaped plate with through holes 9 on its surface to allow the handle 2 to be connected to the rotating plate 6 via the positioning plate 4. The limiting plate 5 includes a limiting seat 10 and a connecting plate 11 that is higher than the limiting seat 10. The limiting seat 10 is located on both sides of the positioning plate 4 to limit the swing of the door bolt 7, and the connecting plate 11 is connected to the limiting seat 10.
[0027] In other words, the limiting seat 10 is respectively placed at the holes opened on the upper and lower sides of the positioning plate 4, and the connecting plate 11 is similar to a C-shaped structure with an opening facing downward, so that the height of the connecting plate 11 is higher than that of the limiting seat 10, ensuring the normal operation of the door bolt 7, and reserving space for the placement of the rotating plate 6.
[0028] In a preferred embodiment, the rotating plate 6 is a triangular plate, such as... Figure 3 As shown, the triangle is an isosceles triangle, with the side of the largest angle connected to the handle 2, and the opposite side of the angle in contact with the side wall of the bolt 7.
[0029] In other words, the bottom edge of the bolt 7 is restricted by the side of the triangular plate that contacts the bolt 7, and the top edge is restricted by the limiting seat 10 of the limiting plate 5. That is to say, when the door handle 2 is turned, the bolt 7 is limited upward by the limiting plate 5 and blocked downward by the rotating plate 6. This makes the movement of the bolt 7 more precise during the rotation of the door handle 2, which is convenient for subsequent locking by its own weight. In addition, the rotating plate 6 adopts a triangular plate structure design, which can utilize the stability of the triangle. The side of the triangular plate can not only drive the bolt 7 to rotate, but also share the weight of the bolt 7, making the self-locking movement of the bolt 7 smoother and more convenient to use.
[0030] Furthermore, the hook plate 8 includes a mounting plate and a locking plate. The mounting plate is placed on the door lock body 1, and the locking plate is located on the side near the positioning plate 4 and has an upward opening. The bolt 7 is adapted to the opening.
[0031] like Figure 4 and Figure 5 As shown, as a door lock structure, a locking plate structure must be installed at the door frame. In the structure of this application, the mounting plate is the structure installed at the door frame. The hook plate 8, as the part adapted to the bolt 7 to achieve self-locking, can adopt the structure shown in the figure, similar to an L-shaped structure, with an upward opening. The length of the bolt 7 is sufficient to exceed the position of the hook plate 8. When locked, the bolt 7 is horizontally set, and the obtuse angle of the triangular structure of the rotating plate 6 faces upward, with the opposite side of the obtuse angle parallel to the bolt 7. When unlocking is required, the handle 2 is turned, and the handle 2 drives the rotating plate 6 to rotate, causing one side of the rotating plate 6 to tilt up, thereby locking the bolt 7. The door bolt 7 is raised so that it leaves the opening of the hook plate 8, thus unlocking the door and opening it. Taking a livestock shed as an example, after entering, the shed door often needs to be closed to prevent animals from escaping. At this time, the staff only needs to open the door, close it, and then release the handle 2. The door bolt 7 presses down on the rotating plate 6 due to its own weight, and slowly returns to the original horizontal state of the door bolt 7 under the action of the weight of the handle 2. This process does not require the staff to turn around and control other structures to lock it, making the operation convenient. At the same time, the structure of the limit 5 ensures that the rotation angle of the door bolt 7 is consistent, ensuring the stability of the self-locking.
[0032] Alternatively, in one specific implementation, such as Figure 4As shown, when door handle 2 is turned to the left, the left side of the triangular plate is raised by approximately 16°. Driven by the triangular plate, the door bolt 7 rotates upwards by 5.8° and disengages from the hook plate 8, thus opening the door. Similarly, even when... Figure 5 As shown, when handle 2 is turned to the right, under the restriction of limit plate 5, the right side of the triangular plate is raised by an angle of approximately 5.5°. This ensures the rotation accuracy of handle 2 and bolt 7, thereby ensuring the stability of self-locking.
[0033] Of course, the above-described implementation method is only one embodiment of the door lock provided in this application. This application does not make specific limitations on the rotation angle of the triangular plate. The extreme angle range of its rotation can be adjusted in the production process according to the actual needs of the door lock. As long as it can be guaranteed that when the door handle 2 rotates, it drives the triangular plate to rotate to the maximum angle, that is, when the door bolt 7 is raised to the limit, the door bolt 7 and the limiting plate 5 are in line contact, the limiting function of the door bolt 7 can be realized.
[0034] Optionally, such as Figure 1 As shown, the handle 2 includes a lock shaft 13 and a handle 2 body. The lock shaft 13 passes through the door lock body 1, and the handle 2 body is installed at both ends. A rectangular groove 12 can be opened at the connection of the handle 2. The rectangular groove 12 can be fixed with the lock shaft 13. A rubber handle 2 sleeve can be fitted onto the surface of the handle 2 to increase friction.
[0035] In one alternative implementation, most of the door lock structure can be made of stainless steel or aluminum-magnesium-zinc alloy. These materials are easy to form and process, which can greatly increase the service life of the door lock. In addition, the weight of stainless steel itself makes it easy to achieve the effect of automatic locking by its own weight.
[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.
Claims
1. A mechanical gravity deadbolt door lock characterized by, The self-locking door lock includes a door lock body, a handle, and a self-locking assembly. The handle is located on both sides of the door lock body. The self-locking assembly is located on one side of the door lock body and includes a positioning plate, a limiting plate, a rotating plate, a bolt, and a hook plate. The positioning plate is placed on the side wall of the door lock body. The rotating plate is connected to the handle and rotatably connected to the positioning plate. The side wall of the bolt is fitted with the rotating plate. One side of the bolt is rotatably connected to the edge of the positioning plate, and the other side is engaged with the hook plate. The limiting plate is placed on the surface of the positioning plate and surrounds the rotating plate and the bolt.
2. A mechanical gravity self-locking door lock as described in claim 1, characterized in that, The limiting plate is a U-shaped plate, and the surface of the limiting plate has through holes so that the handle can be connected to the rotating plate through the positioning plate.
3. A mechanical gravity self-locking door lock as described in claim 2, characterized in that, The limiting plate includes a limiting seat and a connecting plate higher than the limiting seat. The limiting seat is located on both sides of the positioning plate to limit the swing of the door bolt. The connecting plate is connected to the limiting seat.
4. A mechanical gravity self-locking door lock as described in claim 3, characterized in that, The rotating plate is a triangular plate, which is an isosceles triangle. The side with the largest angle is connected to the handle, and the opposite side of the angle is in contact with the side wall of the door bolt.
5. A mechanical gravity self-locking door lock as described in claim 4, characterized in that, The hook plate includes a mounting plate and a locking plate. The mounting plate is placed on the door lock body, and the locking plate is located on the side near the positioning plate and has an upward opening. The door bolt is adapted to the opening.
6. A mechanical gravity self-locking door lock as described in claim 5, characterized in that, The handle includes a lock shaft and a handle body. The lock shaft passes through the door lock body, and the handle body is installed at both ends.