A safety fireproof lock applied to a fireproof door
By introducing automatic lubricators and discharge pipes into fireproof locks, the problems of rust and aging are solved, extending service life and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANYANG HUAMING OPTICS
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-28
AI Technical Summary
Conventional fireproof locks are prone to rusting and aging after prolonged periods of disuse, making them difficult to open and reducing the safety of fire doors.
A safety fireproof lock was designed, comprising a fireproof lock body, a mounting frame, an automatic lubricator, and a waste bin. The automatic lubricator adds lubricating oil periodically, the connecting pipe facilitates disassembly and maintenance, the discharge pipe collects waste oil, and the limit bracket and spring secure the waste bin to prevent rusting and aging.
It effectively extends the service life of fireproof locks, prevents parts from rusting and aging, and improves the safety and performance of fireproof doors.
Smart Images

Figure CN224565906U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fireproof locks, and more particularly to a safety fireproof lock for use on fire doors. Background Technology
[0002] A fireproof lock is a type of lock specifically designed for fire doors. Its main functions include fire prevention, theft prevention, and emergency evacuation. It remains stable in high-temperature environments, ensuring the lock can still be opened normally in emergencies such as fires, while also preventing unauthorized entry. Fireproof locks are widely used in densely populated public places such as shopping malls, hospitals, schools, and office buildings. These places typically require high security and emergency evacuation capabilities, which fireproof locks meet. Fireproof locks can be used in conjunction with various security devices. As a multi-functional lock, it not only provides fire prevention and theft prevention but also enables rapid evacuation in emergencies. Its robust structure and compatibility with security equipment make it an important component of public place security. In conventional fireproof locks, the lock body is installed on the inner wall of the fire door. Two handles are rotatably connected to the surface of the lock body, and two latches are slidably installed on the inner wall of the lock body. The latches close the fire door, and the handles control the latches to slide within the lock body, facilitating opening the fire door.
[0003] Regarding the aforementioned technologies, the inventors believe that conventional fire locks, after installation, are prone to rusting and aging due to their open and closed states. This can occur when the fire lock is not used for a long time, as the internal components are susceptible to external environmental influences. Consequently, the fire lock may become difficult to open, reducing the safety of the fire door.
[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content
[0005] To address the problem of fireproof locks rusting and aging after prolonged periods of disuse, this application provides a safety fireproof lock for use on fire doors.
[0006] The technical solution provided in this application for a safety fireproof lock applied to fire doors is as follows:
[0007] A fireproof safety lock for fire doors includes a fireproof lock body and a mounting frame. Two handles are rotatably mounted on the surface of the fireproof lock body, and the two handles are symmetrically distributed about the fireproof lock body. Two latches are slidably connected to the inner wall of the fireproof lock body. An automatic lubricator is fixedly mounted on the surface of the mounting frame. A display is fixedly connected to the surface of the automatic lubricator, and a connecting pipe is connected to the bottom end of the automatic lubricator. One end of the mounting frame is fixedly mounted to the surface of the fireproof lock body, and the dimensions of the inner wall of the mounting frame are adapted to the dimensions of the automatic lubricator surface. The bottom end of the connecting pipe is connected to the top of the fireproof lock body.
[0008] Preferably, an mounting ring and a threaded pipe are fixedly installed on the inner wall of the connecting pipe, and the surface of the threaded pipe is threadedly connected to the inner wall of the mounting ring.
[0009] Preferably, a cover is slidably mounted on the surface of the mounting frame. The size of one end of the cover is adapted to the size of the mounting frame surface, and a fixing bolt is snapped into the inner wall of the cover. The surface of the fixing bolt is fixedly connected to the inner wall of the mounting frame.
[0010] Preferably, the bottom end of the fireproof lock body is connected to a discharge pipe, one end of the discharge pipe is connected to a waste bin, and a fixing frame is slidably installed on the surface of the waste bin, the dimensions of the inner wall of the fixing frame being compatible with the dimensions of the surface of the waste bin.
[0011] Preferably, the surface of the fixed frame is rotatably connected to two limiting frames, which are symmetrically distributed about the fixed frame, and one end of the limiting frame is engaged with the surface of the waste bin.
[0012] Preferably, a spring is fixedly installed at one end of the limiting frame, and one end of the spring is fixedly connected to the surface of the fixed frame.
[0013] Preferably, the surface of the waste bin has two sliding grooves, which are symmetrically distributed about the waste bin as an axis, and the inner wall of the sliding groove is slidably installed with the inner wall of the fixed frame.
[0014] In summary, this application includes the following beneficial technical effects:
[0015] By connecting the mounting frame to the surface of the fireproof lock body, an automatic lubricator is connected to the inner wall of the mounting frame. A display is mounted on the surface of the automatic lubricator, and its bottom end is connected to the top of the fireproof lock body via a connecting pipe. This allows for the periodic addition of lubricating oil to the fireproof lock body using the automatic lubricator. The connecting pipe has a threaded tube and a mounting ring installed on its surface, with the threaded tube threaded to the inner wall of the mounting ring. This allows for easy removal of the connecting pipe from the top of the fireproof lock body using the threaded tube and mounting ring. A cover slides on the surface of the mounting frame, and a fixing bolt is installed on the inner wall of the cover, allowing for easy opening of the cover after removing the fixing bolt. Compared to existing technologies, this effectively extends the service life of the fireproof lock.
[0016] A discharge pipe can also be installed at the bottom of the fireproof lock body. One end of the discharge pipe is connected to a waste bin, so that waste oil inside the fireproof lock body can be collected through the discharge pipe and stored in the waste bin. Two limit brackets are rotatably connected to the surface of the fixed frame, so that the waste bin can be fixed in the fixed frame with the limit brackets. A spring is installed between the limit brackets and the fixed frame, so that one end of the limit bracket is locked in the waste bin with the spring. Two sliding grooves are opened on the surface of the waste bin, so that the waste bin is more stable after installation; effectively improving the use effect of the device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a safety fireproof lock applied to a fire door according to an embodiment of the application;
[0018] Figure 2 This is a schematic diagram of the mounting frame structure in an embodiment of the application;
[0019] Figure 3 This is a side view of the embodiment of the application.
[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.
[0021] Explanation of reference numerals in the attached drawings: 1. Fireproof lock body; 2. Handle; 3. Lock tongue; 4. Mounting frame; 5. Automatic lubricator; 6. Display; 7. Connecting pipe; 8. Threaded pipe; 9. Mounting ring; 10. Cover; 11. Fixing bolt; 12. Discharge pipe; 13. Waste bin; 14. Fixing frame; 15. Limiting bracket; 16. Spring; 17. Slide groove. Detailed Implementation
[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.
[0023] This application discloses a safety fireproof lock for use on fire doors, referring to... Figure 1 - Figure 2The system includes a fireproof lock body 1. In use, the fireproof lock body 1 is installed on the inner wall of a fire door. Two handles 2 are rotatably connected to the surface of the fireproof lock body 1, and two latches 3 are slidably installed on the inner wall of the fireproof lock body 1. The fire door is closed using the latches 3, and the latches 3 are slidably moved within the fireproof lock body 1 using the handles 2, facilitating the opening of the fire door. An installation frame 4 is connected to the surface of the fireproof lock body 1. An automatic lubricator 5 is connected to the inner wall of the installation frame 4. A display 6 is installed on the surface of the automatic lubricator 5, and a connecting pipe 7 is connected to the bottom of the automatic lubricator 5. The bottom of the connecting pipe 7 is connected to the top of the fireproof lock body 1. The automatic lubricator 5 periodically adds lubricating oil to the fireproof lock body 1, effectively extending the service life of the fireproof lock and preventing rust and aging of the components inside the fireproof lock body 1.
[0024] Reference Figure 2 The surface of the connecting pipe 7 is fitted with a threaded pipe 8 and a mounting ring 9. The surface of the threaded pipe 8 is threadedly connected to the inner wall of the mounting ring 9. The threaded pipe 8 and the mounting ring 9 facilitate the removal of the connecting pipe 7 from the top of the fireproof lock body 1, thereby adding lubricating oil to the automatic lubricator 5. A cover 10 slides on the surface of the mounting frame 4. A fixing bolt 11 is installed on the inner wall of the cover 10. The surface of the fixing bolt 11 is fixedly connected to the inner wall of the mounting frame 4. The fixing bolt 11 connects the cover 10 to the surface of the mounting frame 4. After removing the fixing bolt 11, the cover 10 can be opened, making it more convenient to disassemble the automatic lubricator 5.
[0025] Reference Figure 3 - Figure 4 A discharge pipe 12 is installed at the bottom of the fireproof lock body 1. One end of the discharge pipe 12 is connected to a waste bin 13. The waste bin 13 is connected to the surface of the fireproof door via a fixing frame 14. Waste oil inside the fireproof lock body 1 is collected by the discharge pipe 12 and stored in the waste bin 13, preventing waste oil leakage and pollution to the surrounding environment. Two limit brackets 15 are rotatably connected to the surface of the fixing frame 14. One end of the limit bracket 15 is engaged with the surface of the waste bin 13, fixing the waste bin 13 within the fixing frame 14. Pressing the limit bracket 15... The waste bin 13 can be disassembled at the end to process the waste oil collected inside. A spring 16 is installed between the limiting frame 15 and the fixed frame 14. The spring 16 presses one end of the limiting frame 15 to keep it locked inside the waste bin 13, thus ensuring the fixation of the waste bin 13. Two sliding grooves 17 are opened on the surface of the waste bin 13. The inner wall of the sliding groove 17 slides against the inner wall of the fixed frame 14. The sliding groove 17 helps to restrict the movement of the waste bin 13, making the waste bin 13 more stable after installation.
[0026] The implementation principle of a safety fireproof lock applied to a fire door according to an embodiment of this application is as follows: A mounting frame 4 is connected to the surface of the fireproof lock body 1. An automatic lubricator 5 is connected to the inner wall of the mounting frame 4. A display 6 is mounted on the surface of the automatic lubricator 5, and a connecting pipe 7 is connected to the bottom end of the automatic lubricator 5. The bottom end of the connecting pipe 7 is connected to the top of the fireproof lock body 1, so that lubricating oil can be added to the fireproof lock body 1 periodically using the automatic lubricator 5, thereby preventing rust and aging of the components inside the fireproof lock body 1. A threaded pipe 8 and a mounting ring 9 are mounted on the surface of the connecting pipe 7. The surface of the threaded tube 8 is threaded to the inner wall of the mounting ring 9, so that the connecting tube 7 can be easily removed from the top of the fireproof lock body 1 by means of the threaded tube 8 and the mounting ring 9, thereby adding lubricating oil into the automatic lubricator 5. The surface of the mounting frame 4 has a cover 10 that slides on it. The inner wall of the cover 10 is fitted with a fixing bolt 11. The surface of the fixing bolt 11 is fixedly connected to the inner wall of the mounting frame 4, so that the cover 10 can be connected to the surface of the mounting frame 4 by means of the fixing bolt 11. After the fixing bolt 11 is removed, the cover 10 can be opened, making it more convenient to disassemble the automatic lubricator 5.
[0027] A discharge pipe 12 can also be installed at the bottom of the fireproof lock body 1. One end of the discharge pipe 12 is connected to a waste bin 13. The waste bin 13 is connected to the surface of the fireproof door via a fixing frame 14, so that waste oil inside the fireproof lock body 1 can be collected by the discharge pipe 12 and stored in the waste bin 13, avoiding waste oil leakage and pollution to the surrounding environment. Two limit brackets 15 are rotatably connected to the surface of the fixing frame 14. One end of the limit bracket 15 is engaged with the surface of the waste bin 13, so that the waste bin 13 can be fixed in the fixing frame 14 by the limit bracket 15. The waste bin 13 can be disassembled at one end to process the waste oil collected inside. A spring 16 is installed between the limiting frame 15 and the fixed frame 14 so that the limiting frame 15 can be squeezed at one end by the spring 16 to keep the limiting frame 15 locked inside the waste bin 13, thereby ensuring the fixing effect of the waste bin 13. Two sliding grooves 17 are opened on the surface of the waste bin 13. The inner wall of the sliding groove 17 slides with the inner wall of the fixed frame 14 so as to restrict the movement of the waste bin 13 by means of the sliding groove 17, making the waste bin 13 more stable after installation.
[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fireproof safety lock for use on fire doors, comprising a fireproof lock body (1) and a mounting frame (4), characterized in that: Two handles (2) are rotatably mounted on the surface of the fireproof lock body (1). The two handles (2) are symmetrically distributed about the fireproof lock body (1). Two latches (3) are slidably connected to the inner wall of the fireproof lock body (1). An automatic lubricator (5) is fixedly mounted on the surface of the mounting frame (4). A display (6) is fixedly connected to the surface of the automatic lubricator (5). A connecting pipe (7) is connected to the bottom end of the automatic lubricator (5).
2. A safety fireproof lock for fire doors according to claim 1, characterized in that: One end of the mounting frame (4) is fixedly installed on the surface of the fireproof lock body (1), and the dimensions of the inner wall of the mounting frame (4) are compatible with the dimensions of the surface of the automatic lubricator (5). The bottom end of the connecting pipe (7) is connected to the top of the fireproof lock body (1).
3. A safety fireproof lock for fire doors according to claim 1, characterized in that: The inner wall of the connecting pipe (7) is fixedly installed with an installation ring (9) and a threaded pipe (8), and the surface of the threaded pipe (8) is threadedly connected to the inner wall of the installation ring (9).
4. A safety fireproof lock for fire doors according to claim 1, characterized in that: A cover (10) is slidably mounted on the surface of the mounting frame (4). The size of one end of the cover (10) is compatible with the size of the surface of the mounting frame (4). A fixing bolt (11) is snapped into the inner wall of the cover (10). The surface of the fixing bolt (11) is fixedly connected to the inner wall of the mounting frame (4).
5. A safety fireproof lock for fire doors according to claim 1, characterized in that: The bottom end of the fireproof lock body (1) is connected to a discharge pipe (12), one end of the discharge pipe (12) is connected to a waste bin (13), and a fixed frame (14) is slidably installed on the surface of the waste bin (13). The dimensions of the inner wall of the fixed frame (14) are compatible with the dimensions of the surface of the waste bin (13).
6. A safety fireproof lock for fire doors according to claim 5, characterized in that: The surface of the fixed frame (14) is rotatably connected to two limiting frames (15). The two limiting frames (15) are symmetrically distributed about the fixed frame (14) as an axis, and one end of the limiting frame (15) is engaged with the surface of the waste bin (13).
7. A safety fireproof lock for fire doors according to claim 6, characterized in that: A spring (16) is fixedly installed at one end of the limiting frame (15), and one end of the spring (16) is fixedly connected to the surface of the fixed frame (14).
8. A safety fireproof lock for fire doors according to claim 5, characterized in that: The surface of the waste bin (13) has two grooves (17), which are symmetrically distributed about the waste bin (13) and the inner wall of the groove (17) is slidably installed with the inner wall of the fixed frame (14).