Single-point pressing type escape push lever lock
By using a single-point downward-pressing escape push bar lock design, and leveraging the lever principle of the push rod and lifting plate, the problem of complex structure and low opening efficiency of existing escape push bar locks is solved, achieving the effect of quickly opening the escape door.
Patent Information
- Application Number
- CN202422997358.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Existing escape push bar locks have complex structures, are difficult to manufacture, and have low opening efficiency in emergency situations. Human impact can easily cause the lock tongue to retract slowly, affecting escape efficiency.
It adopts a single-point pressing structure, which drives the lifting plate to rotate through the push rod. The lock tongue rotates around the pivot and disengages from the lock block. It uses the lever principle to reduce the unlocking force, and combines torsion springs and elastic elements to ensure the rapid retraction and reset of the lock tongue.
It enables convenient opening of the escape door in emergencies, improves the retraction efficiency of the locking tongue, avoids locking tongue jamming caused by human impact, enhances the smoothness and safety of the escape door, and reduces manufacturing difficulty.
Smart Images
Figure CN223482444U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of escape push bar lock technology, specifically a single-point pressing escape push bar lock. Background Technology
[0002] Escape locks are mainly used on emergency safety doors in public places with high traffic, such as large supermarkets, shopping malls, office buildings, hospitals, and schools. They prevent unauthorized entry and allow occupants to escape safely in emergencies such as fires. Escape push-bar locks are building hardware products crucial to human safety. With the improvement of living standards and the accelerated development of infrastructure in my country, the application of escape push-bar locks has gradually come into focus. National building and industry standards have also made provisions for them. In 2013, the National Standardization Committee issued GB30051 "General Technical Requirements for Push-Bar Escape Door Locks," further standardizing the relevant standards and requirements for escape push-bar locks. Escape push-bar locks have begun to be widely used and promoted in China, especially in the field of public buildings.
[0003] The existing escape push bar lock has a complex internal structure and is difficult to manufacture, which is not conducive to its widespread use. The internal transmission structure of the existing escape push bar lock is not reasonable enough. In a panic, people often use violent or even violent reactions, such as body impact or kicking, which causes the lock tongue of the push bar lock to retract slowly, affecting the opening efficiency of the push bar lock. Utility Model Content
[0004] The purpose of this invention is to provide a single-point pressure escape lever lock to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a single-point pressing escape push bar lock, comprising an end housing, an end connector fixedly connected to the inside of the end housing, a push rod provided on the end connector, a tail connector provided at one end of the push rod, the outer side of the tail connector fixedly connected to the tail housing, a fixed plate fixedly connected to the inside of the end housing, a locking tongue provided inside the fixed plate, the locking tongue fixedly connected to the outer side of a rotating shaft, a torsion spring sleeved on the outer side of the rotating shaft, a locking tongue fixedly connected to a stop block, a lifting plate provided at one end of the push rod, an elastic element one provided on the outer side of the end connector, a lever fixedly connected to the inner wall of the tail housing, an elastic element two provided at one end of the push rod, and a locking block provided on one side of the end housing.
[0006] Preferably, both the end housing and the tail housing are provided with fixing plates inside, and the end housing is connected and fixed to the fixing plates by bolts.
[0007] Preferably, the end connector is movably hinged to one end of the push rod via a hinge shaft, the lifting plate is fixedly connected to the outside of the hinge shaft, and the elastic element is fitted onto the outside of the hinge shaft.
[0008] Preferably, one end of the push rod is fixedly connected to the tail connector, and the other end of the push rod is rotatably connected to the outer side of the tail housing. The second elastic element is located between the tail connector and the paddle.
[0009] Preferably, the inner wall of the fixing plate is rotatably connected to one end of the rotating shaft, the torsion spring is sleeved on the outer side of the rotating shaft, the side of the fixing plate is provided with a mating groove for the movement of the locking tongue, and the locking tongue is provided with an arc surface that is smooth.
[0010] Preferably, the abutting block is a U-shaped plate, and both ends of the abutting block abut against the lifting plate respectively.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] This utility model opens the push bar lock by pushing the push rod downwards, causing the end connector to rotate the lifting plate. The lifting plate then pushes the abutment block, causing the bolt to rotate around the pivot until the bolt disengages from the bolt and moves into the end housing. The operation is convenient and the internal structure is simple. By using the lever principle, the unlocking force is effectively reduced, allowing for easy opening in emergencies and facilitating escape. At the same time, the downward rotation of the push rod drives the lifting plate, improving the bolt retraction efficiency and preventing the bolt from being difficult to retract in emergencies due to human impact or forced opening, thus enhancing the actual use effect. Attached Figure Description
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is an exploded view of the overall structure of this utility model;
[0015] Figure 3 This is a perspective view of the locking block and structure of this utility model;
[0016] Figure 4 This is a schematic diagram of the locking tongue connection structure of this utility model;
[0017] Figure 5 This is an exploded view of the connection structure between the locking tongue and the lifting plate of this utility model;
[0018] Figure 6 This is a schematic diagram of the connection structure between the push rod and the lever of this utility model.
[0019] In the diagram: 1. End housing; 2. End connector; 3. Push rod; 4. Tail connector; 5. Tail housing; 6. Fixing plate; 7. Lock tongue; 8. Rotating shaft; 9. Torsion spring; 10. Abutment block; 11. Lifting plate; 12. Elastic element one; 13. Paddle; 14. Elastic element two; 15. Lock block. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-6 This utility model provides a technical solution: a single-point pressing escape push bar lock, including an end housing 1, an end connector 2 welded and fixed inside the end housing 1, a push rod 3 connected and fixed at one end of the end connector 2, the push rod 3 being a U-shaped rod, one end of the push rod 3 fixedly connected to a tail connector 4, the outer side of the tail connector 4 welded and fixed to a tail housing 5, a fixing plate 6 welded and fixed inside the end housing 1, a locking tongue 7 provided inside the fixing plate 6, the locking tongue 7 welded and fixed to the outer side of a rotating shaft 8, a torsion spring 9 sleeved on the outer side of the rotating shaft 8, the two ends of the torsion spring 9 being connected and fixed to the locking tongue 7 and the rotating shaft 8 respectively, the locking tongue 7 welded and fixed to a stop block 10, a lifting plate 11 provided at one end of the push rod 3, an elastic element 12 on one side of the end connector 2, a lever 13 welded and fixed to the inner wall of the tail housing 5, an elastic element 14 on one side of the tail connector 4, and a locking block 15 on one side of the end housing 1, the locking block 15 being connected and fixed to a designated position by bolts.
[0022] Both the end housing 1 and the tail housing 5 are equipped with fixing plates 6 inside. The end housing 1 is connected and fixed to the fixing plates 6 by bolts. The bolts connect and fix the end housing 1 and the tail housing 5 as a whole to the escape door, reducing the difficulty of installing and fixing the end housing 1 and the tail housing 5.
[0023] The end connector 2 is hinged to one end of the push rod 3 via a hinge shaft. The center of the lifting plate 11 is welded and fixed to the outside of the hinge shaft. The elastic element 12 is sleeved on the outside of the hinge shaft. The end connector 2 is welded and fixed to the inner wall of the fixed plate 6. When the push rod 3 rotates downward via the hinge shaft, it drives the lifting plate 11 to rotate, thereby causing the lifting plate 11 to tilt. The end connector 2 fixes the position of the push rod 3 to prevent the lifting plate 11 from shifting when the push rod 3 rotates. When the lifting plate 11 tilts, it pushes the abutment block 10 to move, further causing the latch 7 to rotate around the pivot 8. This causes the latch 7 and the upper arc surface of the lock block 15 to slide against the outside of the lock rod until the latch 7 moves into the interior of the fixed plate 6, thereby opening the escape door.
[0024] One end of the push rod 3 is welded and fixed to the tail connector 4, and the other end of the push rod 3 is rotatably connected to the outside of the tail housing 5. The second elastic element 14 is located between the tail connector 4 and the lever 13. The push rod 3 and the latch 7 are reset by the elastic force of the torsion spring 9, the first elastic element 12, and the second elastic element 14, ensuring that the latch 7 can be used normally after repeated use and can still work normally after a long period of non-use. Furthermore, the push rod 3 can be rotated by the torsion spring 9 and the first elastic element 12, which can drive the lifting plate 11 to rotate and extend the latch 7. This allows the push rod 3 to still effectively extend when subjected to external impact. The telescopic locking tongue 7 prevents obstruction due to external impacts, ensuring stability during operation. It also utilizes leverage to reduce unlocking effort, allowing for easy opening in emergencies and facilitating escape. This avoids the inefficient retraction of the locking tongue 7 when opening via vertical or horizontal movement of the push rod 3. Pushing the push rod 3 downwards moves the locking tongue 7 into the fixed plate 6, opening the escape door. The downward momentum of the push rod 3 further enhances the smoothness of opening the escape door.
[0025] The inner wall of the fixed plate 6 is rotatably connected to one end of the rotating shaft 8. The torsion spring 9 is sleeved on the outer side of the rotating shaft 8. A matching groove for the movement of the bolt 7 is opened on the side of the fixed plate 6. The bolt 7 is provided with an arc surface that is smooth. The abutment block 10 is a C-shaped plate. Both ends of the abutment block 10 abut against the lifting plate 11 respectively. The smooth arc surface effectively enhances the smoothness of the bolt 7 and the locking rod on the locking block 15. At the same time, it allows the bolt 7 to be used with various different locking blocks 15, such as three-bar locks and external locks. It can also be used directly with the lock groove, expanding the applicability of the bolt 7 and reducing the cost of the escape push bar lock.
[0026] Working principle: In use, the end housing 1 and the tail housing 5 are connected and fixed to the escape door. When the operator opens the door, they push the push rod 3 downwards to rotate the lifting plate 11. The lifting plate 11 pushes the abutment block 10 downwards, further causing the locking tongue 7 to rotate around the pivot 8. This causes the locking tongue 7 to disengage from the locking block 15 and move into the end housing 1, at which point the escape door can be opened. Then, the torsion spring 9 causes the locking tongue 7 to rotate and return to its original position. Furthermore, the elastic elements 12 and 14 on both sides of the push rod 3 connect to the end connector. 2. The push rod 3 is rotated and reset in conjunction with the lever 13, which facilitates the reset of the latch 7 and avoids the failure of the latch 7 in transmission over a long period of time. The rotation of the push rod 3 drives the lifting plate 11 to rotate synchronously, which further enables the latch 7 to move and open and close. When people bump into or even kick the push rod 3 in an emergency, the push rod 3 can still rotate to open the escape door. At the same time, the push rod 3 rotates itself after being impacted, converting the impact force into the kinetic energy of the lifting plate 11 to push the latch 7 to rotate, thus avoiding the situation where the latch 7 cannot extend or retract easily due to the impact force on the push rod lock.
[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A single-point push-button escape lever lock, comprising an end housing (1), characterized in that: The end housing (1) is fixedly connected to the end connector (2) inside. A push rod (3) is provided on the end connector (2). A tail connector (4) is provided at one end of the push rod (3). The tail connector (4) is fixedly connected to the tail housing (5) on the outside. The end housing (1) is fixedly connected to the fixing plate (6) inside. A locking tongue (7) is provided inside the fixing plate (6). The locking tongue (7) is fixedly connected to the outside of the rotating shaft (8). A torsion spring (9) is sleeved on the outside of the rotating shaft (8). The locking tongue (7) is fixedly connected to the abutment block (10). A lifting plate (11) is provided at one end of the push rod (3). An elastic element one (12) is provided on the outside of the end connector (2). The inner wall of the tail housing (5) is fixedly connected to the paddle (13). An elastic element two (14) is provided at one end of the push rod (3). A locking block (15) is provided on one side of the end housing (1).
2. The single-point downward-pressing escape lever lock according to claim 1, characterized in that: Both the end housing (1) and the tail housing (5) are provided with fixing plates (6), and the end housing (1) is connected and fixed to the fixing plates (6) by bolts.
3. The single-point downward-pressing escape lever lock according to claim 1, characterized in that: The end connector (2) is movably hinged to one end of the push rod (3) via a hinge shaft, the lifting plate (11) is fixedly connected to the outside of the hinge shaft, and the elastic element (12) is sleeved on the outside of the hinge shaft.
4. A single-point downward-pressing escape lever lock according to claim 1, characterized in that: One end of the push rod (3) is fixedly connected to the tail connector (4), and the other end of the push rod (3) is rotatably connected to the outside of the tail housing (5). The second elastic element (14) is located between the tail connector (4) and the paddle (13).
5. A single-point downward-pressing escape lever lock according to claim 1, characterized in that: The inner wall of the fixing plate (6) is rotatably connected to one end of the rotating shaft (8), the torsion spring (9) is sleeved on the outside of the rotating shaft (8), the side of the fixing plate (6) has a matching groove for the movement of the locking tongue (7), and the locking tongue (7) is provided with an arc surface and the arc surface is smooth.
6. A single-point downward-pressing escape lever lock according to claim 1, characterized in that: The abutting block (10) is a U-shaped plate, and the two ends of the abutting block (10) abut against the lifting plate (11) respectively.