Evacuation door lock

Abstract

The utility model discloses an evacuation door lock which comprises a lock box arranged on an evacuation door and a locking structure arranged on a door frame, the lock box comprises an electronic lock, a manual unlocking device and an auxiliary lock, the electronic lock is used for locking a door leaf, the manual unlocking device is connected with the electronic lock and can mechanically unlock the electronic lock, and the auxiliary lock is connected with the door leaf. And the electronic lock can be manually opened in case of failure. The auxiliary lock is used for assisting closing of the emergency door, and alignment locking of a lock pin and a lock hole of the electronic lock is facilitated. Operation time for opening and closing the emergency door is shortened, opening of the emergency door is safer and more stable, closing of the emergency door is quicker and more convenient, and the problem that the door lock of the emergency door cannot be timely opened or quickly closed due to failure is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of evacuation door locks, and more specifically, relates to an evacuation door lock. Background Art

[0002] The emergency doors on trains are not normally used as doors but as walls. Therefore, when the emergency doors are not in use, attention should be paid to whether the normal door locks are locked. However, the existing electronic locks cannot guarantee the locked state and the door leaf may accidentally open after the door lock fails. In addition, there is a situation in which the electronic lock is locked and the door leaf cannot be opened in time in an emergency, which poses certain safety hazards.

[0003] The patent with the publication number CN211691944U discloses a locking mechanism for an emergency evacuation door of an unmanned subway vehicle, which includes a mechanical lock and an electronic lock. The mechanical lock adopts a linkage lock mechanism and is arranged at one end of a seat plate. A lock tongue bumper is installed on the lock tongue, and a contact switch is triggered below the lock tongue bumper. An electronic lock is arranged behind the lock tongue at the other end of the seat plate. The electronic lock is connected to a push rod, and a contact switch is triggered below the push rod to detect the state of the push rod and the electronic lock, and then unlock or lock the evacuation door. The lock tongues at both ends are movably connected to the rotating arm through their respective connecting rods. The handle is fixed on the rotating arm, and the rotating arm is movably connected to the seat plate. A spring is also connected to the rotating arm to keep the handle in the unlocked or locked position. Although the patent can ensure the locked state, the patent controls the electronic lock to retract through the main console, drives the push rod to leave the lock tongue, and allows the lock tongue to retreat, that is, the mechanical lock can be unlocked. Once an emergency occurs, the main console cannot unlock the electronic lock in time, and the evacuation door cannot be opened, which has certain safety hazards. In addition, in order to ensure the sealing of the evacuation door, the evacuation door is relatively bulky and when it is close to the door frame, due to the presence of the seal, the lock pin and lock hole of the electronic lock are difficult to align, insert and fix, and the evacuation door cannot be quickly locked. Utility Model Content

[0004] The utility model provides an evacuation door lock to overcome the problems that the existing evacuation door lock cannot be quickly unlocked by electronic lock and the lock pin and lock hole of the electronic lock are not easy to align when the evacuation door is closed.

[0005] The utility model is realized by the following technical solutions:

[0006] An evacuation door lock, comprising a lock box arranged on the evacuation door and a locking structure on the door frame, wherein the lock box comprises an electronic lock, a manual unlocking device and an auxiliary lock;

[0007] The manual unlocking device comprises an unlocking trigger and a linkage mechanism, wherein the unlocking trigger is connected to the manual unlocking paddle of the electronic lock through the linkage structure;

[0008] The auxiliary lock comprises a handle, a gear shaft and a rack. The handle is connected to the gear shaft, and the rack and the gear shaft are meshed with each other. The handle controls the rotation of the gear shaft and drives the rack to extend and retract into the lock box.

[0009] When the electronic lock needs to be unlocked manually, just pull the manual unlocking device to unlock it. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the handle of the auxiliary lock is rotated. The gear rack is driven by the gear shaft to extend from the lock box to the locking structure of the door frame, so that the evacuation door and the door frame fit together, and the electronic lock is aligned and locked. After the electronic lock is locked, the handle of the auxiliary lock is rotated in the opposite direction to retract the gear rack into the lock box, thereby ensuring that the evacuation door can be opened after the electronic lock is unlocked.

[0010] Furthermore, the linkage mechanism includes a connecting rod 1 connected to the unlocking trigger, and a connecting rod 2 connecting the connecting rod 1 and the manual unlocking paddle.

[0011] Furthermore, the linkage mechanism also includes a slide groove, and a slider matching the slide groove is provided on the connecting rod 1, and the connecting rod 1 moves up and down in the slide groove through the slider.

[0012] Furthermore, the linkage structure is a steel wire rope.

[0013] Furthermore, the auxiliary lock is also provided with a positioning and fixing device.

[0014] Furthermore, the positioning and fixing device includes a positioning hole arranged on the rack and a positioning pin arranged on the lock box and capable of being inserted into the positioning hole.

[0015] Furthermore, the positioning pin matches the positioning hole when the rack is retracted into the lock box.

[0016] Furthermore, the rack of the auxiliary lock includes a lock tongue section and a sawtooth section, and one side of the lock tongue section is an inclined surface from the end portion to the sawtooth section, and the thickness gradually increases.

[0017] Furthermore, one side of the lock tongue section faces the outside of the evacuation door.

[0018] Furthermore, the locking structure includes a rack lock hole and an electronic lock lock hole.

[0019] Compared with the prior art, the beneficial effects are:

[0020] The utility model sets a manual unlocking device in the electronic lock, which can directly unlock the electronic lock through manual mechanical unlocking at the evacuation door, which is convenient for opening the electronic lock quickly and ensures that the door leaf can be manually unlocked when the electronic lock fails. In addition, the utility model sets an auxiliary lock to assist the alignment of the electronic lock pin and the lock hole when the evacuation door is closed, which reduces the operation time when the evacuation door is closed, making the evacuation door closing faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the installation structure of an evacuation door lock;

[0022] Figure 2 It is a schematic diagram of the internal structure of an electronic lock for an evacuation door lock;

[0023] Figure 3 It is a front cross-sectional view of an evacuation door lock;

[0024] Figure 4 The present invention is a side view of an evacuation door lock.

[0025] Among them, 1-lock box; 2-auxiliary lock; 3-electronic lock; 7-rack lock hole; 8-electronic lock pin; 21-handle; 22-gear shaft; 23-rack; 24-positioning hole; 25-positioning pin; 41-unlocking trigger; 42-connecting rod one; 43-connecting rod two; 44-manual unlocking paddle; 45-slider; 46-slide slot. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through a specific implementation method and in combination with its drawings. In the following description, many specific details are described to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, so the scope of protection of the present application is not limited by the specific embodiments disclosed below. In addition, in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly specified and specifically defined. In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and defined, the first feature "on" or "under" the second feature can be the first and second features directly contacting, or the first and second features indirectly contacting through an intermediate medium. In the description of this specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] Example 1

[0028] An evacuation door lock comprises a lock box 1 arranged on the evacuation door and a locking structure on the door frame, wherein the lock box 1 comprises an electronic lock 3, a manual unlocking device and an auxiliary lock 2;

[0029] The manual unlocking device comprises an unlocking trigger 41 and a steel wire rope, and the unlocking trigger 41 is connected to the manual unlocking paddle 44 of the electronic lock 3 via the steel wire rope.

[0030] The auxiliary lock 2 includes a handle 21 , a gear shaft 22 , and a rack 23 . The handle 21 is connected to the gear shaft 22 , and the rack 23 is meshed with the gear shaft 22 . The handle 21 controls the gear shaft 22 to rotate and drives the rack 23 to extend and retract into the lock box 1 .

[0031] When the electronic lock 3 needs to be unlocked manually, it can be unlocked by directly pulling the manual unlocking device. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the handle 21 of the auxiliary lock 2 is rotated to drive the rack 23 to extend from the lock box 1 to the locking structure of the door frame through the gear shaft 22, so that the evacuation door and the door frame fit together, and the electronic lock 3 is aligned and locked. After the electronic lock 3 is locked, the handle 21 of the auxiliary lock 2 is rotated in the opposite direction to retract the rack 23 into the lock box 1, thereby ensuring that the evacuation door is opened after the electronic lock 3 is unlocked.

[0032] Example 2

[0033] An evacuation door lock comprises a lock box 1 arranged on the evacuation door and a locking structure on the door frame, wherein the lock box 1 comprises an electronic lock 3, a manual unlocking device and an auxiliary lock 2;

[0034] The manual unlocking device includes an unlocking trigger 41 and a connecting rod mechanism. The unlocking trigger 41 on the lock box 1 is connected to one end of a connecting rod 1 42 , the connecting rod 1 42 is connected to a connecting rod 2 43 , and the connecting rod 2 43 is connected to a manual unlocking paddle 44 of the electronic lock 3 .

[0035] The auxiliary lock 2 includes a handle 21 , a gear shaft 22 , and a rack 23 . The handle 21 is connected to the gear shaft 22 , and the rack 23 is meshed with the gear shaft 22 . The handle 21 controls the gear shaft 22 to rotate and drives the rack 23 to extend and retract into the lock box 1 .

[0036] The locking structure includes a rack lock hole 7 and an electronic lock 3 lock hole.

[0037] When the electronic lock 3 needs to be unlocked manually, the manual unlocking device is directly pulled, and the manual unlocking paddle 44 of the electronic lock 3 is unlocked under the linkage of the connecting rod 1 42 and the connecting rod, thereby realizing mechanical unlocking. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the handle 21 of the auxiliary lock 2 is rotated, and the rack 23 is driven by the gear shaft 22 to extend from the lock box 1 to the locking structure of the door frame, so that the evacuation door and the door frame fit together, and the electronic lock 3 is aligned and locked. After the electronic lock 3 is locked, the handle 21 of the auxiliary lock 2 is rotated in the opposite direction to retract the rack 23 into the lock box 1, thereby ensuring that the evacuation door is opened after the electronic lock 3 is unlocked.

[0038] Example 3

[0039] An evacuation door lock comprises a lock box 1 arranged on the evacuation door and a locking structure on the door frame, wherein the lock box 1 comprises an electronic lock 3, a manual unlocking device and an auxiliary lock 2;

[0040] The manual unlocking device includes an unlocking trigger 41, a connecting rod mechanism and a slide groove 46. The unlocking trigger 41 on the lock box 1 is connected to one end of the connecting rod 1 42. The connecting rod 1 42 is provided with a slider 45. The slider 45 slides up and down in the slide groove 46 to ensure the stability of the connecting rod movement. The other end of the connecting rod 1 42 is connected to the connecting rod 2 43, and the connecting rod 2 43 is connected to the manual unlocking paddle 44 of the electronic lock 3.

[0041] The auxiliary lock 2 includes a handle 21 , a gear shaft 22 , and a rack 23 . The handle 21 is connected to the gear shaft 22 , and the rack 23 is meshed with the gear shaft 22 . The handle 21 controls the gear shaft 22 to rotate and drives the rack 23 to extend and retract into the lock box 1 .

[0042] The locking structure includes a rack lock hole 7 and an electronic lock 3 lock hole.

[0043] When the electronic lock 3 needs to be unlocked manually, the manual unlocking device is directly pulled, and the connecting rod 1 42 slides up in the slide slot 46, driving the connecting rod 2 43 to pull up, so that the manual unlocking paddle 44 of the electronic lock 3 is unlocked, and mechanical unlocking is achieved. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the handle 21 of the auxiliary lock 2 is rotated, and the rack 23 is driven by the gear shaft 22 to extend from the lock box 1 to the locking structure of the door frame, so that the evacuation door and the door frame fit together, and the electronic lock 3 is aligned and locked. After the electronic lock 3 is locked, the handle 21 of the auxiliary lock 2 is rotated in the opposite direction to retract the rack 23 into the lock box 1, thereby ensuring that the evacuation door is opened after the electronic lock 3 is unlocked.

[0044] Example 4

[0045] An evacuation door lock comprises a lock box 1 arranged on the evacuation door and a locking structure on the door frame, wherein the lock box 1 comprises an electronic lock 3, a manual unlocking device and an auxiliary lock 2;

[0046] The manual unlocking device includes an unlocking trigger 41, a connecting rod mechanism and a slide groove 46. The unlocking trigger 41 on the lock box 1 is connected to one end of the connecting rod 1 42. The connecting rod 1 42 is provided with a slider 45. The slider 45 slides up and down in the slide groove 46 to ensure the stability of the connecting rod movement. The other end of the connecting rod 1 42 is connected to the connecting rod 2 43, and the connecting rod 2 43 is connected to the manual unlocking paddle 44 of the electronic lock 3.

[0047] The auxiliary lock 2 includes a handle 21, a gear shaft 22, and a rack 23. The handle 21 is connected to the gear shaft 22, and the rack 23 meshes with the gear shaft 22. The handle 21 controls the gear shaft 22 to rotate and drives the rack 23 to extend and retract into the lock box 1. A positioning hole 24 is provided on the rack 23, and a positioning pin 25 that can be inserted into the positioning hole 24 is provided on the lock box 1. When the rack 23 is retracted into the lock box 1, the positioning pin 25 can be inserted into the positioning hole 24 to fix the position of the rack 23.

[0048] The locking structure includes a rack lock hole 7 and an electronic lock 3 lock hole.

[0049] When the electronic lock 3 needs to be unlocked manually, the manual unlocking device is directly pulled, and the connecting rod 1 42 slides up in the slide groove 46, driving the connecting rod 2 43 to pull up, so that the manual unlocking paddle 44 of the electronic lock 3 is unlocked, and mechanical unlocking is achieved. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the positioning pin 25 on the lock box 1 is pulled out to unlock the auxiliary lock 2, and then the handle 21 of the auxiliary lock 2 is rotated, and the rack 23 is driven to extend from the lock box 1 to the locking structure of the door frame through the gear shaft 22, so that the evacuation door and the door frame fit together, and the electronic lock 3 is aligned and locked. After the electronic lock 3 is locked, the handle 21 of the auxiliary lock 2 is rotated in the opposite direction to retract the rack 23 into the lock box 1, and the positioning pin 25 is inserted into the positioning hole 24 to fix the position of the rack 23, thereby ensuring that the evacuation door is opened after the electronic lock 3 is unlocked.

[0050] Example 5

[0051] An evacuation door lock, such as Figure 1-4 , comprising a lock box 1 arranged on the evacuation door and a locking structure on the door frame, wherein the lock box 1 comprises an electronic lock 3, a manual unlocking device and an auxiliary lock 2;

[0052] The manual unlocking device includes an unlocking trigger 41, a connecting rod mechanism and a slide groove 46. The unlocking trigger 41 on the lock box 1 is connected to one end of the connecting rod 1 42. The connecting rod 1 42 is provided with a slider 45. The slider 45 slides up and down in the slide groove 46 to ensure the stability of the connecting rod movement. The other end of the connecting rod 1 42 is connected to the connecting rod 2 43, and the connecting rod 2 43 is connected to the manual unlocking paddle 44 of the electronic lock 3.

[0053] The auxiliary lock 2 includes a handle 21, a gear shaft 22, and a rack 23. The handle 21 is connected to the gear shaft 22, and the rack 23 meshes with the gear shaft 22. The handle 21 controls the rotation of the gear shaft 22 and drives the rack 23 to extend and retract into the lock box 1. The rack 23 is provided with a positioning hole 24, and the lock box 1 is provided with a positioning pin 25 that can be inserted into the positioning hole 24. When the rack 23 is retracted into the lock box 1, the positioning pin 25 can be inserted into the positioning hole 24 to fix the position of the rack 23. The rack 23 includes a lock tongue section and a sawtooth section, and the sawtooth section meshes with the gear shaft 22. The lock tongue section surface facing the outside of the evacuation door is an inclined surface from the end to the sawtooth section, and the thickness gradually increases.

[0054] The locking structure includes a rack lock hole 7 and an electronic lock 3 lock hole.

[0055] When the electronic lock 3 needs to be unlocked manually, the manual unlocking device is directly pulled, and the connecting rod 1 42 slides up in the slide groove 46, driving the connecting rod 2 43 to pull up, so that the manual unlocking paddle 44 of the electronic lock 3 is unlocked, and mechanical unlocking is achieved. When the evacuation door is closed, the evacuation door is closed close to the door frame, and the positioning pin 25 on the lock box 1 is pulled out to unlock the auxiliary lock 2, and then the handle 21 of the auxiliary lock 2 is rotated, and the rack 23 is driven from the lock box 1 to the rack lock hole 7 of the door frame through the gear shaft 22. As the thickness of the rack 23 increases, the evacuation door gradually compresses the elastic seal or buffer structure, so that the evacuation door and the door frame fit tightly, and the electronic lock pin 8 is aligned with the lock hole of the electronic lock 3 to lock. After the electronic lock 3 is locked, the handle 21 of the auxiliary lock 2 is rotated in the opposite direction to retract the rack 23 into the lock box 1, and the positioning pin 25 is inserted into the positioning hole 24 to fix the position of the rack 23, thereby ensuring that the evacuation door is opened after the electronic lock 3 is unlocked.

[0056] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An evacuation door lock, characterized in that: It includes a lock box arranged on the evacuation door and a locking structure on the door frame, wherein the lock box includes an electronic lock, a manual unlocking device and an auxiliary lock; The manual unlocking device comprises an unlocking trigger and a linkage mechanism, wherein the unlocking trigger is connected to the manual unlocking paddle of the electronic lock through the linkage structure; The auxiliary lock comprises a handle, a gear shaft and a rack. The handle is connected to the gear shaft, and the rack and the gear shaft are meshed with each other. The handle controls the rotation of the gear shaft and drives the rack to extend and retract into the lock box.

2. The evacuation door lock according to claim 1, characterized in that: The linkage mechanism includes a connecting rod 1 connected to the unlocking trigger, and a connecting rod 2 connecting the connecting rod 1 and the manual unlocking paddle.

3. The evacuation door lock according to claim 2, characterized in that: The linkage mechanism also includes a slide groove, and a sliding block matching the slide groove is provided on the connecting rod 1, and the connecting rod 1 moves up and down in the slide groove through the sliding block.

4. The evacuation door lock according to claim 1, characterized in that: The linkage structure is a steel wire rope.

5. The evacuation door lock according to claim 1, characterized in that: The auxiliary lock is also provided with a positioning and fixing device.

6. The evacuation door lock according to claim 5, characterized in that: The positioning and fixing device comprises a positioning hole arranged on the rack and a positioning pin arranged on the lock box and capable of being inserted into the positioning hole.

7. The evacuation door lock according to claim 6, characterized in that: The positioning pin matches the positioning hole when the rack is retracted into the lock box.

8. The evacuation door lock according to claim 1, characterized in that: The rack of the auxiliary lock comprises a lock tongue section and a sawtooth section. One side of the lock tongue section is an inclined surface from the end portion to the sawtooth section, and the thickness gradually increases.

9. The evacuation door lock according to claim 8, characterized in that: One side of the lock tongue section faces the outside of the evacuation door.

10. The evacuation door lock according to claim 1, characterized in that: The locking structure includes a rack locking hole and an electronic lock locking hole.

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