Integrated snap-lock plate reinforcement plate
By designing an integrated locking plate reinforcement plate and using components such as sliders, springs, and trapezoidal rubber extrusion protrusions, the problems of cumbersome installation and loosening under the traditional bolt connection method are solved, achieving rapid installation and stable connection, and improving the safety and structural stability of fire doors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JUNTONG DOOR CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional fire door latch plates require pre-drilling for bolt connection, which is cumbersome to install and prone to loosening under vibration and impact, resulting in reduced connection reliability and difficulty in meeting the structural stability requirements under complex working conditions.
An integrated locking plate reinforcement plate was designed, using components such as sliders, springs, positioning plates, and trapezoidal rubber extrusion protrusions. It achieves quick installation through sliding installation and elastic locking, and enhances connection stability through friction and extrusion.
It enables rapid installation, improves installation efficiency, enhances connection stability and vibration resistance, and ensures the safety and reliability of fire doors in daily use and during fires.
Smart Images

Figure CN224579192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fire door accessories, and in particular to an integrated locking plate reinforcement plate. Background Technology
[0002] Fire door strike plates are an important accessory for fire doors, mainly used to fix the door leaf and door frame, ensuring the stability and safety of the door.
[0003] As a key component of fire doors, the fire door strike plate plays a crucial role in fixing the door leaf and frame and ensuring the fire door closes securely. Its performance directly affects the safety and fire separation effect of the fire door. Traditional reinforcement plate connection methods mainly use bolt connections, which require pre-drilling holes at the connection points. The installation process is cumbersome and time-consuming. Furthermore, under long-term vibration and impact conditions, the bolts are prone to loosening and falling off, reducing the reliability of the reinforcement plate connection and making it difficult to meet the structural stability requirements under complex working conditions, resulting in insufficient safety. Therefore, it is necessary to redesign an integrated strike plate reinforcement plate to address the above problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an integrated locking plate reinforcement plate.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An integrated snap-on plate reinforcement plate includes a snap-on plate body. Two locking openings are formed on the outer wall of the snap-on plate body. A receiving frame that mates with the two locking openings is fixedly installed on the back of the snap-on plate body. Two movable openings are formed on the outer wall of the snap-on plate body. A sliding rod is fixedly installed inside each of the two movable openings. Two sliders are slidably installed on the outer walls of each of the two sliding rods via a limiting mechanism. Two springs are installed on the outer walls of each of the two sliding rods. The two ends of each spring are elastically connected to the inner wall of the corresponding movable opening and the outer wall of the slider, respectively. A positioning plate is fixedly connected to the inner wall of each slider via a connecting mechanism. An extrusion protrusion is fixedly installed on the outer wall of each positioning plate.
[0006] Preferably, the limiting mechanism includes a limiting rod installed inside the movable opening, the limiting rod sliding through the two sliders.
[0007] Preferably, the connecting mechanism includes a connecting block fixedly installed on the inner wall of the slider, and the end of the connecting block is fixedly connected to the outer wall of the positioning plate.
[0008] Preferably, each of the extrusion bumps has a trapezoidal cross-section and is made of rubber.
[0009] Preferably, a movable block is fixedly installed on the outer wall of each slider, and a slot is provided on the outer wall of each movable block.
[0010] Preferably, reinforcing plates are fixedly installed on both outer walls of the two receiving frames, and the end of each reinforcing plate is fixedly connected to the back of the locking plate body.
[0011] The beneficial effects of this utility model are: By incorporating components such as sliders, springs, positioning plates, and extrusion protrusions, the door can be quickly embedded into the mounting position by pressing the positioning plate during installation. After the spring returns to its original position, it forms an elastic lock, significantly improving installation efficiency. The trapezoidal rubber extrusion protrusions can fit tightly against the surface, and combined with the spring preload, they prevent loosening and resist vibration and impact. The sliders and limit rods provide precise guidance, and the reinforcing plates enhance rigidity, ensuring the safety and reliability of the fire door in daily use and during fires. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the integrated locking plate reinforcement plate proposed in this utility model. Figure 2 This is a schematic diagram of the back structure of the integrated locking plate reinforcement plate proposed in this utility model; Figure 3 This is a top cross-sectional view of the integrated locking plate reinforcement plate proposed in this utility model. Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram.
[0013] In the diagram: 1. Locking plate body, 2. Receiving frame, 3. Slide bar, 4. Limiting bar, 5. Slider, 6. Spring, 7. Connecting block, 8. Positioning plate, 9. Extrusion protrusion, 10. Moving block, 11. Reinforcing plate. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] Reference Figure 1-5The integrated snap-lock plate reinforcement plate includes a snap-lock plate body 1. The outer wall of the snap-lock plate body 1 has two locking holes. The back of the snap-lock plate body 1 is fixedly installed with a receiving frame 2 that cooperates with the two locking holes. The outer wall of the snap-lock plate body 1 has two movable openings. A slide rod 3 is fixedly installed inside each of the two movable openings. Two sliders 5 are slidably installed on the outer wall of each slide rod 3 through a limiting mechanism. Two springs 6 are installed on the outer wall of each slide rod 3. The two ends of the two springs 6 are elastically connected to the inner wall of the corresponding movable opening and the outer wall of the slider 5, respectively. A positioning plate 8 is fixedly connected to the inner wall of each slider 5 through a connecting mechanism. A pressing protrusion 9 is fixedly installed on the outer wall of each positioning plate 8.
[0016] The limiting mechanism includes a limiting rod 4 installed inside the movable opening, which slides through two sliders 5.
[0017] Furthermore, a precise clearance fit is adopted between the slider 5 and the slide rod 3, which not only ensures that the slider 5 can slide flexibly on the slide rod 3, but also effectively restricts its radial movement, preventing the slider 5 from tilting or jamming under force. At the same time, the slider 5 is made of high-strength lightweight alloy, which reduces the overall weight while ensuring strength and improves the ease of installation. The setting of the limit rod 4 can precisely constrain the movement direction of the slider 5, ensuring that the slider 5 can only slide in a straight line along the slide rod 3, preventing the slider 5 from deviating or rotating during movement, thereby ensuring that the positioning plate 8 and the extrusion protrusion 9 can accurately cooperate with the connecting parts, improving the accuracy and stability of the connection.
[0018] The connecting mechanism includes a connecting block 7 fixedly installed on the inner wall of the slider 5, and the end of the connecting block 7 is fixedly connected to the outer wall of the positioning plate 8.
[0019] Furthermore, the connecting block 7 adopts a high-strength connection method, such as welding, to firmly connect the slider 5 and the positioning plate 8 into a whole, ensuring that the positioning plate 8 can move synchronously and stably when the slider 5 moves, effectively transmitting the motion and force of the slider 5, and ensuring the coordinated working performance of the entire connection structure.
[0020] Each extrusion bump 9 has a trapezoidal cross-section and is made of rubber.
[0021] Furthermore, its trapezoidal cross-section design can generate greater friction and extrusion force during the extrusion process, enhancing the tightness of the connection. The rubber material has good elasticity and cushioning properties, which can not only avoid damage to the connecting parts, but also adapt to certain installation errors, improving the reliability and adaptability of the connection.
[0022] Each slider 5 has a movable block 10 fixedly installed on its outer wall, and each movable block 10 has a slot on its outer wall.
[0023] Furthermore, the design of the movable block 10 facilitates manual control of the slider 5 by the operator, and its shape conforms to ergonomic principles, making operation more comfortable and convenient.
[0024] Both sides of the two receiving frames 2 are fixedly installed with reinforcing plates 11, and the end of each reinforcing plate 11 is fixedly connected to the back of the locking plate body 1.
[0025] Furthermore, the reinforcing plate 11 is made of high-strength metal sheet and is firmly connected to the receiving frame 2 and the locking plate body 1 by welding. The setting of the reinforcing plate 11 can significantly enhance the connection strength between the receiving frame 2 and the locking plate body 1, improve the overall structural rigidity of the reinforcing plate, and make it less prone to deformation or damage when subjected to large external forces, effectively improving the service life and reliability of the reinforcing plate.
[0026] When using this utility model, the two opposing positioning plates 8 can be pressed inward first. At this time, the two opposing positioning plates 8 can move relative to each other, driving the slider 5 to slide on the slide rod 3. At the same time, the spring 6 is compressed, causing the pressing protrusion 9 to retract into the locking plate body 1, reducing the overall size of the reinforcing plate and making it easier to insert the reinforcing plate into the gap of the structure to be connected or reinforced. When the locking opening of the reinforcing plate is initially aligned with the corresponding part of the external structure or other reinforcing plates, the pressing force on the positioning plate 8 is slowly released. Under the action of the elastic restoring force of the spring 6, the slider 5 drives the positioning plate 8 and the pressing protrusion 9 to slide outward along the slide rod 3 to reset. The trapezoidal cross-section pressing protrusion 9 fits tightly with the external structure. Due to its unique shape design, it generates greater friction and pressing force with the connection part during the reset process, further locking the reinforcing plate tightly with the external structure. At the same time, the receiving frame 2 cooperates with the locking opening to provide a stable receiving space for the connecting parts and enhance the stability of the overall connection. Furthermore, if more precise control of the movement of the slider 5 is required during operation, an appropriate tool can be inserted into the slot on the outer wall of the moving block 10. The tool can be used to push or pull the moving block 10, thereby more stably controlling the movement of the positioning plate 8 and the pressing protrusion 9. After the connection is completed, the reinforcing plate 11 can further enhance the connection strength between the receiving frame 2 and the locking plate body 1, ensuring that the entire reinforcing plate structure can withstand various external forces without loosening or damage during long-term use, and continuously provide a reliable reinforcing effect for the structure.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An integrated striker plate reinforcement plate comprising a striker plate body (1), characterized in that, The outer wall of the latch plate body (1) has two locking openings. The back of the latch plate body (1) is fixedly installed with a receiving frame (2) that cooperates with the two locking openings. The outer wall of the latch plate body (1) has two movable openings. A slide rod (3) is fixedly installed inside each of the two movable openings. Two sliders (5) are slidably installed on the outer wall of each of the two slide rods (3) through a limiting mechanism. Two springs (6) are installed on the outer wall of each of the two slide rods (3). The two ends of the two springs (6) are elastically connected to the inner wall of the corresponding movable opening and the outer wall of the slider (5) respectively. A positioning plate (8) is fixedly connected to the inner wall of each slider (5) through a connecting mechanism. A pressing protrusion (9) is fixedly installed on the outer wall of each positioning plate (8).
2. The one-piece strike plate reinforcement plate of claim 1, wherein, The limiting mechanism includes a limiting rod (4) installed inside the movable opening, which slides through two sliders (5).
3. The one-piece strike plate reinforcement plate of claim 2, wherein, The connecting mechanism includes a connecting block (7) fixedly installed on the inner wall of the slider (5), and the end of the connecting block (7) is fixedly connected to the outer wall of the positioning plate (8).
4. The one-piece strike plate reinforcement plate of claim 3, wherein, Each of the extrusion bumps (9) has a trapezoidal cross section and each of the extrusion bumps (9) is made of rubber.
5. The one-piece strike plate reinforcement of claim 4, wherein, Each slider (5) has a movable block (10) fixedly installed on its outer wall, and each movable block (10) has a slot on its outer wall.
6. The one-piece strike plate reinforcement of claim 5, wherein, Both of the two receiving frames (2) have reinforcing plates (11) fixedly installed on their outer walls on both sides, and the end of each reinforcing plate (11) is fixedly connected to the back of the locking plate body (1).