Escape fireproof lock
By using a combustible material-based combustion block in the escape fire lock, which burns during a fire and drives a limit rod to lock the bolt, the problem of fire spreading due to accidental opening of the escape door is solved, thus achieving safety protection in fire situations.
Patent Information
- Application Number
- CN202423218364.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing escape doors pose a safety risk of accidental opening in the event of a fire, which could lead to the fire spreading further.
An escape fireproof lock was designed, which uses a combustible material to burn completely when a fire spreads. The limit rod is driven by an elastic element to keep the lock tongue closed and prevent accidental opening.
It effectively reduces the possibility of escape doors being accidentally opened in the event of a fire, reduces the risk of fire spreading, and improves safety and ease of use.
Smart Images
Figure CN223647579U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fireproof lock, especially to an escape fireproof lock. BACKGROUND
[0002] The escape door is a door for escape passage in public places, also known as emergency evacuation door or safety emergency door, which is the entrance of escape passage in public places. When fire or other dangerous situations occur, people in public places can enter the safety passage through the escape door to escape from danger.
[0003] In the prior art, the door lock of the escape door is made of heat-resistant and fire-resistant material to prevent the influence of fire. After the fire occurs, the people escape, and the fire source is isolated by the fireproof function of the escape door itself to avoid further spread of the fire.
[0004] However, in actual use, when the fire spreads to the escape door, the people on the other side of the escape door cannot explore the specific situation of the fire, and there is a possibility that the escape door will be opened accidentally, leading to further spread of the fire, which has certain safety risks. INVENTION CONTENTS
[0005] In order to reduce the safety risk, the application provides an escape fireproof lock.
[0006] The escape fireproof lock provided by the application adopts the following technical scheme:
[0007] An escape fireproof lock comprises a lock body and a lock tongue, the lock body is provided with a rotating groove, the lock tongue is rotationally arranged in the rotating groove, the inner wall of the rotating groove is provided with a limiting hole, a limiting rod is slidingly arranged in the limiting hole, the limiting rod can abut against the lock tongue, the limiting rod is provided with a burning block, the burning block abuts against the outer wall of the lock body, the limiting rod is provided with a limiting block abutting against the burning block, the lock body is provided with an elastic element abutting against the limiting block, and the elastic element is used to push the limiting block to move.
[0008] By adopting the above technical scheme, the burning block is made of plastic or other combustible materials, and other components of the fireproof lock are made of heat-resistant and fire-resistant materials. When the fire spreads to the escape door and burns, the burning block will be burned out after a period of time. At this time, the limiting block moves under the action of the elastic element, the limiting rod slides in the limiting hole, the limiting rod abuts against the lock tongue, the lock tongue cannot rotate, the state of the closed and locked escape door is maintained, the possibility of fire spread caused by accidental opening of the escape door is reduced, and the safety risk is reduced.
[0009] Preferably, the lock body is provided with a mounting block, the limiting hole is arranged on the mounting block, and the burning block abuts against the mounting block.
[0010] By adopting the above technical solution, the limiting rod is set on the mounting block, which can reduce the length of the limiting rod, thereby reducing costs and facilitating the assembly of the limiting rod.
[0011] Preferably, the elastic element is an elastic plate, with one end of the elastic plate disposed on the mounting block and the other end of the elastic plate abutting against the limiting block.
[0012] By adopting the above technical solution, the elastic plate is convenient and easy to use as an elastic element. The elastic plate abuts against the limiting block, and the elastic plate has a certain deformation at this time. When the burning block is completely burned, there is a gap between the limiting plate and the mounting block. At this time, the elastic plate returns to its original state and pushes the limiting block to move, thereby pushing the limiting rod to move. The operation is simple and convenient, and easy to use.
[0013] Preferably, the mounting block is provided with mounting bolts for mounting the elastic plate onto the mounting block.
[0014] By adopting the above technical solution, the elastic plate is installed on the mounting block by mounting bolts. The exposed elastic plate may be damaged by impact. The mounting bolts not only facilitate the installation of the elastic plate, but also facilitate timely replacement when the elastic plate is damaged.
[0015] Preferably, the mounting bolt is provided with a positioning rod, the locking tongue is provided with a positioning groove, and the positioning pin is inserted into the positioning groove and can slide in the positioning groove.
[0016] By adopting the above technical solution, the elastic plate is installed on the mounting block after the mounting bolt is installed. The positioning rod on the mounting bolt is inserted into the positioning groove of the lock tongue. The positioning groove is arc-shaped. When the lock tongue rotates, the positioning rod slides relative to the positioning groove. The positioning rod further positions and limits the lock tongue, reducing the possibility of the lock malfunctioning due to accidental dislodgement during the rotation of the lock tongue, and reducing safety risks.
[0017] Preferably, the lock body is rotatably provided with a pry bar, which can abut against the lock tongue, and the lock body is provided with a reset component, which is used to drive the lock tongue to reset.
[0018] By adopting the above technical solution, when it is necessary to unlock, the pry bar is pushed to rotate, so that one end of the pry bar abuts against the bolt and pushes the bolt to rotate, thereby performing the unlocking operation. At the same time, the reset component can drive the bolt to reset, thereby completing the locking and improving the convenience of using the door lock.
[0019] Preferably, the reset assembly includes a reset spring and a first reset rod, the reset spring being disposed on the lock body and the first reset rod being disposed on the lock tongue, and the reset spring being connected to the first reset rod.
[0020] By adopting the above technical solution, when the lock tongue is rotated to unlock, the first reset rod rotates with the lock tongue, thereby stretching the reset spring. When the pry bar is released, the reset spring returns to its original position and pulls the first reset rod to move, thereby driving the lock tongue to rotate and reset, completing the locking process. The operation is automatic, improving the convenience of use.
[0021] Preferably, the lock body is rotatably provided with a lock shaft, the lock shaft is provided with a rotating block, the rotating block abuts against the pry bar, and the lock shaft is provided with a lock groove.
[0022] By adopting the above technical solution, inserting the key into the lock slot can drive the lock shaft to rotate, which in turn drives the rotating block to rotate. The rotating block rotates in both directions, which will block and push the pry bar to rotate, thereby driving the lock tongue to rotate and unlock. By setting the lock shaft, the lock tongue can be driven to rotate and unlock from the other side of the lock body, improving the convenience of use.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By setting up a lock body, lock tongue, rotating groove, limiting hole, limiting rod, burning block, limiting block and elastic plate, the lock tongue is rotated in the rotating groove of the lock body. When the fire spreads to the escape door, it will ignite the burning block made of combustible material. After the burning block burns out after a period of time, the elastic plate returns to its original state and pushes the limiting block, thereby causing the limiting rod to slide in the limiting hole, so that the limiting rod abuts against the lock tongue, thereby locking the lock tongue and keeping the fireproof lock in a locked state, reducing the possibility of the fire spreading further due to the accidental opening of the escape door;
[0025] 2. By setting up mounting blocks, mounting bolts, positioning rods, and positioning grooves, the mounting bolts are used to install the elastic plate on the mounting blocks, while the positioning rods at the ends of the mounting bolts are inserted into the arc-shaped positioning grooves on the lock tongue, thereby further positioning and limiting the rotation of the lock tongue, reducing the possibility of the lock tongue being skewed due to collisions and causing the door lock to fail and jam, and improving the stability of use;
[0026] 3. By incorporating a pry bar, a return spring, a first return rod, a lock shaft, a rotating block, and a lock groove, inserting the key into the lock groove drives the lock shaft to rotate. This, in turn, causes the rotating block to press against the pry bar, pushing it to rotate. During this rotation, the pry bar presses against and pushes the bolt to rotate, thus unlocking the lock. During unlocking, the first return rod rotates with the bolt, stretching the return spring. When the key is released, the pry bar loses power, and the return spring returns to its original position, pulling the first return rod to rotate the bolt back to lock the lock. The overall unlocking and locking operation is simple and convenient to use. Attached Figure Description
[0027] Figure 1 This is an overall schematic diagram of an escape fireproof lock provided in an embodiment of this application.
[0028] Figure 2 It is a cross-sectional view used to show the connection relationship between the latch and the mounting block.
[0029] Figure 3 yes Figure 2 A magnified view of region A in the middle.
[0030] Figure 4 It is a cross-sectional view used to illustrate the lock shaft structure.
[0031] Explanation of reference numerals in the attached drawings: 1. Lock body; 11. Rotating groove; 12. Mounting block; 121. Limiting hole; 2. Lock tongue; 21. Positioning groove; 3. Limiting rod; 31. Limiting block; 32. Combustion block; 4. Elastic plate; 41. Mounting bolt; 411. Positioning rod; 5. Pry bar; 51. Lock shaft; 511. Lock groove; 512. Rotating block; 513. Assembly groove; 6. Reset assembly; 61. Reset spring; 62. First reset rod; 63. Second reset rod. Detailed Implementation
[0032] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0033] This application discloses an escape fireproof lock. (Refer to...) Figures 1 to 4 The lock includes a lock body 1 and a bolt 2. The lock body 1 has a rotating groove 11 on its side wall. Mounting blocks 12 are fixedly mounted on the lock body 1, and are fixedly mounted on the inner walls of both sides of the rotating groove 11. The bolt 2 is rotatably mounted between the two mounting blocks 12 via a pivot and passes through the rotating groove 11. Each mounting block 12 has a limiting hole 121 through it. A limiting rod 3 is slidably mounted within the limiting hole 121, and its end abuts against the bolt 2. An annular limiting block 31 is fixedly fitted onto the end of the limiting rod 3 away from the bolt 2. An annular combustion block 32 is also fitted onto the limiting rod 3. The combustion block 32 is made of combustible material, while other components of the fireproof lock are made of fire-resistant material. The combustion block 32 abuts against the limiting block 31 and the mounting block 12. An elastic plate 4 is provided on the side of the mounting block 12 away from the bolt 2 as an elastic element. One end of the elastic plate 4 deforms and abuts against the end of the limiting block 31 away from the combustion block 32. When a fire occurs and spreads to the escape door, after burning for a certain period of time, the burning block 32 on the lock body 1 burns out. At this time, the elastic plate returns to its original state and pushes the limiting block 31 until the limiting block 31 abuts against the mounting block 12. Then, the limiting rod 3 slides and abuts against the lock tongue 2, so that the lock tongue 2 cannot rotate, thereby locking the door lock and preventing the escape door from being opened. This reduces the possibility of the fire door being accidentally opened and causing the fire to spread further, thus reducing the safety risk.
[0034] To improve durability, refer to Figure 2 and Figure 3The mounting block 12 is equipped with mounting bolts 41, which are used to mount the end of the elastic plate 4 away from the limiting block 31 onto the mounting block 12. A positioning rod 411 is fixedly attached to the end of the mounting bolt 41. An arc-shaped positioning groove 21 is provided on the side wall of the latch 2, with the latch 2's rotation axis as its center. The positioning rod 411 is adapted to be inserted into the positioning groove 21 and can move within it. The positioning rod 411, inserted into the positioning groove 21, limits the rotation of the latch 2, reducing the possibility of the latch 2 being offset by collisions, thereby improving the overall durability of the door lock.
[0035] To improve ease of use, refer to Figure 1 and Figure 4 The lock body 1 is rotatably mounted with a pry bar 5. One end of the pry bar 5 is located below the latch 2 and can abut against the latch 2. The lock body 1 is rotatably mounted with a lock shaft 51, which passes through the lock body 1. The end of the lock shaft 51 away from the pry bar 5 has a cross-shaped lock groove 511. A rotating block 512 is fixedly mounted near the end of the lock shaft 51 close to the pry bar 5. The rotating block 512 has an assembly groove 513, through which the pry bar 5 passes. The inner wall of the assembly groove 513 and the side wall of the pry bar 5 are both inclined. The lock body 1 is equipped with a reset assembly 6 for driving the latch 2 to reset. The reset assembly 6 includes a reset spring 61, a first reset rod 62, and a second reset rod 63. The second reset rod 63 is fixedly mounted on the lock body 1, and the first reset rod 62 is fixedly mounted on the latch 2 and passes through the latch 2. The two ends of the reset spring 61 are respectively fixedly mounted on the first reset rod 62 and the second reset rod 63. Insert the key into the lock slot 511 and turn it. The rotating block 512 rotates, causing the pry bar 5 to rotate, which in turn pushes the bolt 2 to rotate, thus unlocking the lock. During the unlocking process, the first reset rod 62 rotates with the bolt 2, smoothly stretching the reset spring 61. When the key is released, the reset spring 61 returns to its original position, pulling the first reset rod 62 to move, thereby causing the bolt 2 to rotate and reset, thus locking the lock. The operation is simple and convenient, improving the ease of use.
[0036] The implementation principle of an escape fireproof lock according to an embodiment of this application is as follows: After a fire occurs, personnel open the escape door and evacuate through the escape door. The fire spreads to the escape door but is blocked by the escape door. After a period of time, the combustion block 32 on the lock body 1 is ignited and begins to burn. After a period of time, the combustion block 32 burns out. At this time, a gap appears between the limiting block 31 and the mounting block 12. The elastic plate 4 returns to its original position and pushes the limiting block 31 until the limiting block 31 abuts against the mounting block 12, thereby driving the limiting rod 3 to move and extend out of the limiting hole 121. The limiting rod 3 abuts against the locking tongue 2, so that the locking tongue 2 cannot rotate, thereby locking the fireproof lock and preventing the fireproof door from being opened. This reduces the possibility of the fire spreading further due to accidental opening of the fireproof door and reduces the safety risk.
[0037] 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. An escape fireproof lock, characterized in that: The lock includes a lock body (1) and a bolt (2). The lock body (1) is provided with a rotating groove (11). The bolt (2) is rotatably disposed in the rotating groove (11). The inner wall of the rotating groove (11) is provided with a limiting hole (121). A limiting rod (3) is slidably disposed in the limiting hole (121). The limiting rod (3) can abut against the bolt (2). The limiting rod (3) is provided with a burning block (32). The burning block (32) abuts against the outer wall of the lock body (1). The limiting rod (3) is provided with a limiting block (31) that abuts against the burning block (32). The lock body (1) is provided with an elastic element that abuts against the limiting block (31). The elastic element is used to push the limiting block (31) to move.
2. The escape fireproof lock according to claim 1, characterized in that: The lock body (1) is provided with a mounting block (12), the limiting hole (121) is provided on the mounting block (12), and the combustion block (32) abuts against the mounting block (12).
3. The escape fireproof lock according to claim 2, characterized in that: The elastic element is an elastic plate (4), one end of which is mounted on the mounting block (12), and the other end of which abuts against the limiting block (31).
4. The escape fireproof lock according to claim 3, characterized in that: The mounting block (12) is provided with mounting bolts (41) for mounting the elastic plate (4) onto the mounting block (12).
5. An escape fireproof lock according to claim 4, characterized in that: The mounting bolt (41) is provided with a positioning rod (411), and the locking tongue (2) is provided with a positioning groove (21). The positioning rod (411) is inserted into the positioning groove (21) and can slide in the positioning groove (21).
6. The escape fireproof lock according to claim 1, characterized in that: The lock body (1) is rotatably provided with a pry bar (5), which can abut against the bolt (2). The lock body (1) is provided with a reset component (6), which is used to drive the bolt (2) to reset.
7. An escape fireproof lock according to claim 6, characterized in that: The reset assembly (6) includes a reset spring (61) and a first reset rod (62). The reset spring (61) is disposed on the lock body (1), and the first reset rod (62) is disposed on the lock tongue (2). The reset spring (61) is connected to the first reset rod (62).
8. An escape fireproof lock according to claim 6, characterized in that: The lock body (1) is rotatably provided with a lock shaft (51), the lock shaft (51) is provided with a rotating block (512), the rotating block (512) abuts against the pry bar (5), and the lock shaft (51) is provided with a lock groove (511).