Multi-lock-point escape lock and escape door

Abstract

The invention discloses a multi-lock-point escape lock and an escape door, the multi-lock-point escape lock comprises a main lock assembly and an auxiliary lock assembly, the main lock assembly comprises a main spring bolt and a main lock shell, the main spring bolt is rotatably connected to the main lock shell, and a part of the main spring bolt extends out of the main lock shell. The auxiliary lock assembly is connected to the upper portion or the lower portion of the main lock assembly and comprises an auxiliary lock shell, an auxiliary spring bolt and a driven rod, the auxiliary spring bolt is rotationally connected to the auxiliary lock shell, the driven rod is slidably connected to the auxiliary lock shell, the main lock shell is provided with a driving block, the driving block is provided with a shifting rod, the main lock shell is movably provided with a linkage block, and the linkage block is connected with the driven rod through the driving rod. The linkage block abuts against the driving block, when the driving block rotates, the shifting rod abuts against and drives the main lock tongue to rotate so as to retract into the main lock shell, the driving block synchronously abuts against and drives the linkage block to slide away from one side of the auxiliary lock assemblies, and the driven rod drives the auxiliary lock tongue to rotate so as to retract into the auxiliary lock shell. The two auxiliary lock assemblies are symmetrically arranged above and below the main lock assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and particularly relates to a multi-lock-point emergency escape lock and an emergency escape door. Background Art

[0002] Public places such as schools, hospitals, and office buildings have extremely high requirements for the security and emergency escape convenience of door locks. Traditional door locks often only have one lock point, with insufficient anti-theft performance. In order to improve the emergency escape efficiency while considering the anti-theft performance, the multi-lock-point emergency escape lock came into being. The multi-lock-point emergency escape lock adds a secondary lock assembly on the basis of the main lock to achieve multi-point locking, enhancing the anti-theft performance of the door lock. At the same time, in case of an emergency, all lock points can be quickly unlocked through a unified operation, facilitating the rapid evacuation of personnel.

[0003] However, most of the existing multi-lock-point emergency escape locks have complex structures, inconvenient operations, and the linkage mechanism between lock points is not efficient enough. Often, the secondary lock needs to be operated separately while unlocking the main lock, which not only prolongs the emergency escape time but also may cause damage to the lock due to improper operation, affecting the emergency escape efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a multi-lock-point emergency escape lock with a simple structure, convenient operation, and efficient linkage.

[0005] The present invention also provides an emergency escape door with the above multi-lock-point emergency escape lock.

[0006] The multi-lock-point emergency escape lock according to the first aspect embodiment of the present invention includes a main lock assembly and a secondary lock assembly. The main lock assembly includes a main lock tongue and a main lock housing. The main lock tongue is rotatably connected to the main lock housing and partially extends out of the main lock housing. The secondary lock assembly is connected above or below the main lock assembly. The secondary lock assembly includes a secondary lock housing, a secondary lock tongue, and a driven rod. The secondary lock tongue is rotatably connected to the secondary lock housing. The driven rod is slidably connected to the secondary lock housing. The main lock housing is provided with a driving block. The driving block is provided with a lever. The main lock housing is movably provided with a linkage block. The linkage block is connected to the driven rod through a driving rod. The linkage block abuts against the driving block. When the driving block rotates, the lever abuts against and drives the main lock tongue to rotate to retract into the main lock housing, and the driving block synchronously abuts against and drives the linkage block to slide on the side away from the secondary lock assembly. The driven rod drives the secondary lock tongue to rotate to retract into the secondary lock housing.

[0007] The multi-lock-point emergency escape lock according to the embodiments of the present invention has at least the following beneficial effects: When the driving block rotates, its lever abuts against and drives the main lock tongue to rotate, causing the main lock tongue to retract into the main lock housing, thereby unlocking the main lock point. At the same time, the driving block abuts against the linkage block and pushes the linkage block to slide towards the side away from the secondary lock assembly. The linkage block pulls the driven rod through the driving rod, and the driven rod drives the secondary lock tongue to rotate, causing the secondary lock tongue to retract into the secondary lock housing, thereby unlocking the secondary lock point. It can be understood that the multi-lock-point design improves the anti-theft performance of the door lock. Even if one lock point is damaged, the other lock points can still maintain the locked state, increasing the difficulty of illegal intrusion. Moreover, the multi-lock-point emergency escape lock integrates the unlocking actions of the main lock and the secondary lock into one operation through a linkage structure, greatly simplifying the operation steps during escape, achieving the efficient synchronous movement of the main lock tongue and the secondary lock tongue, and significantly improving the operation convenience and reliability of the lock. There are two secondary lock assemblies, and the two secondary lock assemblies are symmetrically arranged above and below the main lock assembly.

[0008] According to some embodiments of the present invention, a driven block is movably arranged on the main lock housing, and the driven block and the linkage block are respectively connected by the driven rod to drive the two secondary lock assemblies to unlock.

[0009] According to some embodiments of the present invention, the driven block and the linkage block are relatively arranged along the midline of the main lock housing. A linkage gear is rotatably connected to the main lock housing, and the linkage gear is arranged between the linkage block and the driven block. The main lock housing of the linkage block is provided with linkage teeth, and the linkage block meshes with the linkage gear through the linkage teeth. The driven block is provided with driven teeth, and the driven block meshes with the driven gear through the driven teeth. When the linkage block is driven by the driving block, the linkage gear rotates to drive the driven block to slide and drive the driven rod to move, and the two secondary lock assemblies are unlocked synchronously.

[0010] According to some embodiments of the present invention, the main lock housing has a groove-like structure, and guide side walls are provided on both sides of the driven block and both sides of the linkage block. The guide side walls abut against the inner side walls on both sides of the main lock housing to guide the moving directions of the driven block and the linkage block.

[0011] According to some embodiments of the present invention, the main lock housing is provided with limiting rods. There are two limiting rods, which are respectively arranged close to the two driven rods. The driven rods move and abut against the limiting rods to limit the movement of the two driven rods.

[0012] According to some embodiments of the present invention, the driven block is provided with a reset boss, and a reset spring is connected between the reset boss and the limiting rod to drive the two secondary lock tongues to reset.

[0013] According to some embodiments of the present invention, a secondary lock rod is provided at one end of the secondary lock tongue away from the secondary lock housing, and the secondary lock rod is connected to the driven rod. The driven rod moves toward the main lock housing, and the secondary lock rod moves toward the secondary lock housing to drive the secondary lock housing to retract.

[0014] According to some embodiments of the present invention, the auxiliary lock tongue is connected to a auxiliary lock shaft, the auxiliary lock shaft is rotatably connected to the auxiliary lock housing, and the auxiliary lock shaft is sleeved with a reset torsion spring to drive the auxiliary lock tongue to retract and return to its original position.

[0015] According to some embodiments of the present invention, the main lock assembly is connected to a toggle assembly, which includes a pressure rod and a rocker arm. One end of the rocker arm is rotatably connected to the main lock housing and is provided with a rotating shaft. The rotating shaft passes through the main lock housing and is connected to the drive block. The rocker arm is arranged in an inclined upward posture, one end of the pressure rod is connected to one end of the rocker arm away from the main lock housing, and the other end is hinged to the door panel.

[0016] An escape door according to an embodiment of the second aspect of the present invention comprises a multi-locking point escape lock as described in any one of the above items.

[0017] The escape door according to the embodiment of the present invention has at least the following beneficial effects: the escape door adopts the multi-locking point escape lock provided by the present invention as a locking mechanism, thereby having the characteristics of multi-locking point locking, synchronous unlocking, automatic resetting, etc. The multi-locking point escape lock is adopted as the locking mechanism, which enhances the overall safety and anti-theft performance of the escape door. In an emergency, all lock points can be quickly unlocked and personnel can be evacuated, thereby improving the escape efficiency. By optimizing the unlocking method and transmission structure and other designs, the escape door is made more convenient and reliable during use.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 Schematic diagram of a multi-locking point escape lock according to an embodiment of the present invention; Figure 2 A schematic diagram of a main lock assembly of a multi-locking point escape lock according to an embodiment of the present invention; Figure 3 Schematic diagram of the linkage structure in the main lock housing of the multi-locking point escape lock according to an embodiment of the present invention; Figure 4 Schematic diagram of a secondary lock assembly of a multi-locking point escape lock according to an embodiment of the present invention.

[0020] Figure numerals: main lock assembly 100; main lock housing 110; main lock tongue 120; driving block 130; lever 131; linkage block 140; linkage tooth pattern 141; driven block 150; driven tooth pattern 151; reset boss 152; linkage gear 160; limit rod 170; reset spring 171; guide side wall 180; auxiliary lock assembly 200; auxiliary lock housing 210; auxiliary lock tongue 220; auxiliary lock rod 221; auxiliary lock shaft 222; reset torsion spring 223; driven rod 300; toggle assembly 400; rocker arm 410; pressure rod 420; rotating shaft 430. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution. In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0025] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,the present invention discloses a multi-lock-point escape lock, which includes a main lock assembly 100 and a sub-lock assembly 200. The main lock assembly 100 includes a main lock tongue 120 and a main lock housing 110. The main lock tongue 120 is rotatably connected to the main lock housing 110 and partially extends out of the main lock housing 110. The sub-lock assembly 200 is connected above or below the main lock assembly 100. The sub-lock assembly 200 includes a sub-lock housing 210, a sub-lock tongue 220, and a driven rod 300. The sub-lock tongue 220 is rotatably connected to the sub-lock housing 210, and the driven rod 300 is slidably connected to the sub-lock housing 210. The main lock housing 110 is provided with a driving block 130, the driving block 130 is provided with a lever 131, the main lock housing 110 is movably provided with a linkage block 140, the linkage block 140 is connected to the driven rod 300 through a driving rod, the linkage block 140 abuts against the driving block 130. When the driving block 130 rotates, the lever 131 abuts against and drives the main lock tongue 120 to rotate to retract into the main lock housing 110, and the driving block 130 synchronously abuts against and drives the linkage block 140 to slide on the side away from the sub-lock assembly 200, and the driven rod 300 drives the sub-lock tongue 220 to rotate to retract into the sub-lock housing 210.

[0026] In a specific embodiment, the main lock assembly 100 includes a main lock housing 110 and a main lock tongue 120. The main lock tongue 120 is rotatably connected to the main lock housing 110 through a rotating shaft 430, and partially protrudes from the main lock housing 110 to achieve the locking function. A driving block 130 is arranged inside the main lock housing 110, and a lever 131 is provided on the driving block 130. The driving block 130 is connected to an external operating mechanism and is used to drive the rotation of the main lock tongue 120. A linkage block 140 is also movably arranged inside the main lock housing 110, and the linkage block 140 is connected to a driven rod 300 of the secondary lock assembly 200 through a driving rod. The secondary lock assembly 200 is connected above or below the main lock assembly 100 and includes a secondary lock housing 210, a secondary lock tongue 220, and a driven rod 300. The secondary lock tongue 220 is also rotatably connected inside the secondary lock housing 210 through a rotating shaft 430, and the driven rod 300 is slidably connected inside the secondary lock housing 210 and is used to transmit the driving force from the main lock assembly 100.

[0027] A linkage block 140 is also movably arranged inside the main lock housing 110, and the linkage block 140 is connected to the driven rod 300 through a driving rod. In the normal locked state, the linkage block 140 abuts against the driving block 130. When the external operation causes the driving block 130 to rotate, the lever 131 first abuts and drives the main lock tongue 120 to rotate, causing the main lock tongue 120 to retract into the main lock housing 110 to achieve the unlocking of the main lock. At the same time, the rotation of the driving block 130 also synchronously abuts and pushes the linkage block 140 to slide towards the side away from the secondary lock assembly 200. The sliding of the linkage block 140 is transmitted to the driven rod 300 through the driving rod, and the driven rod 300 then drives the secondary lock tongue 220 to rotate, causing the secondary lock tongue 220 to also retract into the secondary lock housing 210 to complete the unlocking of the secondary lock.

[0028] The linkage mechanism of the main lock assembly 100 and the secondary lock assembly 200 is as follows: when the driving block 130 rotates, its lever 131 abuts and drives the main lock tongue 120 to rotate, causing the main lock tongue 120 to retract into the main lock housing 110 to achieve the unlocking of the main lock point. At the same time, the driving block 130 abuts the linkage block 140 and pushes the linkage block 140 to slide towards the side away from the secondary lock assembly 200. The linkage block 140 pulls the driven rod 300 through the driving rod, and the driven rod 300 drives the secondary lock tongue 220 to rotate, causing the secondary lock tongue 220 to retract into the secondary lock housing 210 to achieve the unlocking of the secondary lock point.

[0029] It can be understood that the multi-lock point design improves the anti-theft performance of the door lock. Even if one lock point is damaged, the locking states of other lock points can still be maintained, increasing the difficulty of illegal intrusion. And the multi-lock point escape lock integrates the unlocking actions of the main lock and the secondary lock into one operation through the linkage structure, greatly simplifying the operation steps during escape, realizing the efficient synchronous movement of the main lock tongue 120 and the secondary lock tongue 220, and significantly improving the operation convenience and reliability of the lock.

[0030] Refer to Figure 1, in some embodiments, two secondary lock assemblies 200 are provided. The two secondary lock assemblies 200 are symmetrically arranged above and below the primary lock assembly 100 respectively. Specifically, a driven block 150 is movably arranged in the primary lock housing 110. The driven block 150 and the linkage block 140 are respectively connected by a driven rod 300 and drive the two secondary lock assemblies 200 to unlock. When the drive block 130 rotates, the linkage block 140 is pushed and drives one secondary lock assembly 200 to unlock. At the same time, the movement of the linkage block 140 drives the driven block 150 to move, and the driven block 150 then drives the other secondary lock assembly 200 to unlock through the driven rod 300. This not only enhances the overall stability of the door lock but also enables the door lock to provide effective locking in multiple directions, further improving safety. Through the cooperation of the driven block 150 and the linkage block 140, the synchronous unlocking of the two secondary lock assemblies 200 is achieved, simplifying the transmission structure, and the two secondary lock assemblies 200 can be unlocked simultaneously with one operation, improving the escape efficiency.

[0031] Referring to Figure 2 and Figure 3 , a linkage gear 160 is arranged in the primary lock housing 110. The linkage gear 160 is arranged between the linkage block 140 and the driven block 150. The linkage block 140 and the driven block 150 are respectively engaged with the linkage gear 160 through a linkage tooth pattern 141 and a driven tooth pattern 151. When the drive block 130 drives the linkage block 140 to move, the linkage gear 160 rotates and drives the driven block 150 to move, thereby driving the two secondary lock assemblies 200 to unlock synchronously through the driven rod 300. To ensure the correct movement directions of the linkage block 140 and the driven block 150, a guiding side wall 180 is arranged in the primary lock housing 110. The guiding side wall 180 abuts against the inner side walls on both sides of the primary lock housing 110 to guide the movement directions of the linkage block 140 and the driven block 150. Through the transmission of the linkage gear 160, the synchronous movement of the linkage block 140 and the driven block 150 is achieved, and further the synchronous unlocking of the two secondary lock assemblies 200 is achieved. The arrangement of the guiding side wall 180 ensures the accurate movement directions of the linkage block 140 and the driven block 150, improving the accuracy and stability of the transmission.

[0032] Furthermore, a limit rod 170 is provided in the main lock housing 110, and the limit rod 170 is provided near the two driven rods 300. When the driven rod 300 moves, it abuts against the limit rod 170 to limit its range of movement, thereby preventing the driven rod 300 from excessively moving and causing damage to the mechanism. The present invention provides a reset boss 152 on the driven block 150, and connects a reset spring 171 between the reset boss 152 and the limit rod 170. When the driven block 150 is pushed to move, the reset spring 171 is compressed; when the external driving force disappears, the reset spring 171 releases energy and drives the driven block 150 and the auxiliary lock tongue 220 to reset. The setting of the reset spring 171 enables the driven block 150 and the auxiliary lock tongue 220 to automatically reset after unlocking, thereby improving the reliability and durability of the door lock. There is no need to manually reset the auxiliary lock tongue 220, which simplifies the operation process.

[0033] Reference Figure 4 , a secondary lock rod 221 is provided at one end of the secondary lock tongue 220 away from the secondary lock housing 210, and the secondary lock rod 221 is connected to the driven rod 300. When the driven rod 300 moves toward the main lock housing 110, the secondary lock rod 221 moves toward the secondary lock housing 210, thereby driving the secondary lock tongue 220 to retract. The movement of the driven rod 300 is transmitted to the secondary lock tongue 220 through the secondary lock rod 221, so that it rotates and retracts into the secondary lock housing 210 to achieve unlocking. Further, the secondary lock tongue 220 is connected to a secondary lock shaft 222, and the secondary lock shaft 222 is rotatably connected to the secondary lock housing 210. A reset torsion spring 223 is mounted on the secondary lock shaft 222, which is used to drive the secondary lock tongue 220 to reset after the unlocking operation is completed. The torsion of the reset torsion spring 223 causes the secondary lock tongue 220 to automatically restore the extended state after unlocking, thereby ensuring the reliability of the lock. Optionally, the main lock tongue 120 can be synchronously provided with a reset structure of the secondary lock tongue 220.

[0034] Reference Figure 1 , the main lock assembly 100 is connected to the toggle assembly 400. The toggle assembly 400 includes a pressure rod 420 and a rocker arm 410, one end of the rocker arm 410 is rotatably connected to the main lock housing 110, and is connected to the drive block 130 through a rotating shaft 430. The rocker arm 410 is arranged in an inclined upward posture, one end of the pressure rod 420 is connected to the rocker arm 410, and the other end is hinged to the door panel. When the pressure rod 420 is subjected to an external force, the rocker arm 410 rotates and drives the drive block 130 to rotate, thereby driving the main lock tongue 120 and the auxiliary lock tongue 220 to move synchronously. Through the setting of the toggle assembly 400, an external unlocking method of the door lock is realized, so that the user can unlock the door lock by a simple pressing action. The unlocking process is simplified and the escape efficiency is improved, especially in an emergency, people can be evacuated quickly.

[0035] The present invention also provides an escape door, which includes the multi-lock-point escape lock described in any one of the above. The escape door uses the multi-lock-point escape lock provided by the present invention as the locking mechanism, thus having the characteristics of multi-lock-point locking, synchronous unlocking, automatic reset, etc. Using the multi-lock-point escape lock as the locking mechanism enhances the overall safety and anti-theft performance of the escape door. In case of emergency, all lock points can be quickly unlocked and personnel can be evacuated, improving the escape efficiency. By optimizing the unlocking method and transmission structure and other designs, the escape door is more convenient and reliable during use.

[0036] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A multi-locking point escape lock, characterized in that: include: A main lock assembly includes a main lock tongue and a main lock housing, wherein the main lock tongue is rotatably connected to the main lock housing and partially extends out of the main lock housing; The secondary lock assembly is connected to the upper or lower part of the main lock assembly. The secondary lock assembly includes a secondary lock housing, a secondary lock tongue and a driven rod. The secondary lock tongue is rotatably connected to the secondary lock housing, and the driven rod is slidably connected to the secondary lock housing. The main lock housing is provided with a driving block, the driving block is provided with a lever, the main lock housing is movably provided with a linkage block, the linkage block is connected to the driven rod through the driving rod, the linkage block abuts against the driving block, when the driving block rotates, the lever abuts against and drives the main lock tongue to rotate to retract the main lock housing, and the driving block synchronously abuts against and drives the linkage block to slide away from one side of the secondary lock assembly, and the driven rod drives the secondary lock tongue to rotate to retract the secondary lock housing; There are two auxiliary lock assemblies, and the two auxiliary lock assemblies are symmetrically arranged above and below the main lock assembly.

2. The multi-locking point escape lock according to claim 1, characterized in that: The main lock housing is movably provided with a driven block, and the driven block is connected to the linkage block through the driven rod respectively and drives the two auxiliary lock components to unlock.

3. The multi-locking point escape lock according to claim 2, characterized in that: The driven block and the linkage block are respectively arranged relatively to each other along the center line of the main lock housing, and the main lock housing is rotatably connected with a linkage gear, and the linkage gear is arranged between the linkage block and the driven block. The linkage block of the main lock housing is provided with a linkage tooth pattern, and the linkage block is meshed with the linkage gear through the linkage tooth pattern, and the driven block is provided with a driven tooth pattern, and the driven block is meshed with the driven gear through the driven tooth pattern. When the linkage block is driven by the driving block, the linkage gear rotates to drive the driven block to slide and drive the driven rod to move, and the two secondary lock assemblies are unlocked synchronously.

4. The multi-locking point escape lock according to claim 3, characterized in that: The main lock housing is in a groove-shaped structure, and guide side walls are arranged on both sides of the driven block and the linkage block. The guide side walls abut against the inner side walls on both sides of the main lock housing to guide the moving direction of the driven block and the linkage block.

5. The multi-locking point escape lock according to claim 3, characterized in that: The main lock housing is provided with a limiting rod, and two limiting rods are provided, which are respectively arranged close to the two driven rods. The driven rod moves and abuts against the limiting rod to limit the movement of the two driven rods.

6. The multi-locking point push-down anti-pry escape lock according to claim 5, characterized in that: The driven block is provided with a reset boss, and a reset spring is connected between the reset boss and the limit rod to drive the two auxiliary lock tongues to reset.

7. The multi-locking point escape lock according to claim 1, characterized in that: The auxiliary lock tongue is provided with an auxiliary lock rod at one end away from the auxiliary lock housing, and the auxiliary lock rod is connected to the driven rod. The driven rod moves toward the main lock housing, and the auxiliary lock rod moves toward the auxiliary lock housing to drive the auxiliary lock housing to retract.

8. The multi-locking point escape lock according to claim 7, characterized in that: The auxiliary lock tongue is connected to an auxiliary lock shaft, the auxiliary lock shaft is rotatably connected to the auxiliary lock housing, and the auxiliary lock shaft is sleeved with a return torsion spring to drive the auxiliary lock tongue to retract and return to its original position.

9. The multi-locking point escape lock according to claim 1, characterized in that: The main lock assembly is connected to a toggle assembly, which includes a pressure rod and a rocker arm. One end of the rocker arm is rotatably connected to the main lock housing and is provided with a rotating shaft. The rotating shaft passes through the main lock housing and is connected to the drive block. The rocker arm is arranged in an inclined upward posture. One end of the pressure rod is connected to one end of the rocker arm away from the main lock housing, and the other end is hinged to the door panel.

10. An escape door, characterized in that: It comprises a multi-locking point escape lock as claimed in any one of claims 1 to 9.

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