A synchronized door closer with a door lock

Abstract

This application relates to a synchronous door knife with a car door lock, comprising a door knife base plate, a knife arm assembly disposed on the door knife base plate for opening the landing door, a connecting rod assembly rotatably disposed on the door knife base plate for opening or closing the knife arm assembly, and a swing arm assembly rotatably disposed on the door knife base plate for driving the connecting rod assembly to rotate. The door knife base plate is also provided with a locking hook assembly for locking or unlocking the car door. A rotation point is located between the swing arm assembly and the door knife base plate, and a compression spring is disposed between the swing arm assembly and the door knife base plate, the compression spring having a pushing force. When the pushing force is located on one side of the rotation point, the compression spring tends to force the swing arm assembly to rotate to one side; when the pushing force is located on the other side of the rotation point, the compression spring tends to force the swing arm assembly to rotate to the other side. This application uses the compression spring to keep the swing arm assembly stationary when there is no external force, thereby reducing the difficulty of leveling the landing during elevator power outages.

Description

Technical Field

[0001] This application relates to the field of elevator equipment, and in particular to a synchronous door knife with a car door lock. Background Technology

[0002] With rapid urbanization, elevators, as a major piece of building equipment, will see a rapid increase in market share. As special equipment, elevators face increasingly stringent safety requirements. New elevator standards stipulate that elevator car doors must have anti-pry-open functionality or be equipped with door locks to prevent passengers from opening the doors unnecessarily in the event of an elevator malfunction, thus avoiding dangerous accidents.

[0003] Currently, synchronous door cutters with car door locks on the market have a swing arm assembly. The swing of the swing arm assembly can push the car door lock to unlock or lock the car door. The swing arm assembly is often equipped with a spring to reset the swing arm assembly, so that the car door lock can maintain the lock on the car door.

[0004] However, the spring remains compressed during elevator operation. When the elevator loses power, it no longer provides external force to the swing arm. At this time, the spring releases its elastic potential energy, causing the swing arm to push the bridge door lock, thus locking the car door. This increases the difficulty of leveling and rescuing the elevator when it loses power. Summary of the Invention

[0005] To reduce the difficulty of leveling the elevator during a power outage, this application provides a synchronous door knife with a car door lock.

[0006] The synchronous door knife with car door lock provided in this application adopts the following technical solution:

[0007] A synchronous door knife with a car door lock includes a door knife base plate, a knife arm assembly disposed on the door knife base plate for opening the landing door, a connecting rod assembly rotatably disposed on the door knife base plate for driving the knife arm assembly to open or close, and a swing arm assembly rotatably disposed on the door knife base plate for driving the connecting rod assembly to rotate. The door knife base plate is also provided with a lock hook assembly for locking or unlocking the car door. There is a rotation point between the swing arm assembly and the door knife base plate, and a compression spring is disposed between the swing arm assembly and the door knife base plate. The compression spring has a pushing force. When the pushing force is located on one side of the rotation point, the compression spring has a tendency to force the swing arm assembly to rotate to one side; when the pushing force is located on the other side of the rotation point, the compression spring has a tendency to force the swing arm assembly to rotate to the other side.

[0008] By adopting the above technical solution, the knife arm assembly can be connected to the landing door, enabling the landing door and car door to move synchronously. This allows the landing door to open when the car door opens, or close when the car door closes. The linkage assembly is mainly used to connect the swing arm assembly and the knife arm assembly. When the swing arm assembly rotates, the linkage assembly can drive the knife arm assembly to open or close. The swing arm assembly can rotate around a pivot point, and the pushing force of the compression spring can push the swing arm assembly to rotate. During the swinging process, the direction of the compression spring's pushing force changes, causing it to move to one side or the other side of the pivot point. When the pushing force is on one side of the pivot point, the compression spring tends to force the swing arm assembly to rotate in one direction, thus keeping the knife arm assembly in an open state; when the pushing force is on the other side of the pivot point, the compression spring tends to force the swing arm assembly to rotate in the other direction, thus keeping the knife arm assembly in a closed state. If a power outage occurs while the elevator car is moving between floors, the spring will keep the swing arm assembly stationary and the knife arm assembly open, making it easier to push the first floor door from the outside, and then the car door, thus facilitating the subsequent rescue of people trapped inside the elevator.

[0009] Optionally, the cutter arm assembly has a first cutter arm and a second cutter arm, the first cutter arm and the second cutter arm being rotatably connected to the linkage assembly, and when the linkage assembly rotates, the first cutter arm and the second cutter arm move closer to or further away from each other.

[0010] By adopting the above technical solution, when the first and second cutter arms are closed, they can clamp the inside of the landing door, thereby achieving synchronization between the car door and the landing door, so that the landing door opens simultaneously when the car door opens. When the first and second cutter arms are open, the car door will not come into contact with the landing door during the car's up and down movement within the floors, thus ensuring that the landing door on each floor does not affect the car.

[0011] Optionally, the linkage assembly includes two linkage plates, an unlocking rod fixed to one of the linkage plates, and an unlocking plate rotatably disposed on the swing arm assembly; the two ends of the linkage plates are respectively rotatably connected to the first blade arm and the second blade arm, and one end of the unlocking plate abuts against the locking hook assembly; when the linkage assembly rotates, the unlocking rod can push the unlocking plate, forcing the unlocking plate to push the locking hook assembly, so that the locking hook assembly is in the unlocked state.

[0012] By adopting the above technical solution, the two connecting rods can stably open or close the first and second cutter arms. The unlocking rod allows the connecting rods to push the unlocking plate when rotating. This causes the unlocking plate to push the locking hook assembly, allowing the locking hook assembly to unlock.

[0013] Optionally, the swing arm assembly includes a swing plate rotatably mounted on the door knife base plate, a linkage rod and a drive rod respectively fixed to the swing plate, the door knife base plate having a linkage groove, and the linkage rod located within the linkage groove; the linkage groove has an open end and a closed end; when the swing plate swings, the linkage rod can slide within the linkage groove, so that the linkage rod is located at the open end or the closed end; when the linkage rod is located at the open end, the compression spring can force the swing plate to rotate in one direction, so that the linkage rod remains at the open end; when the linkage rod is located at the closed end, the compression spring can force the swing plate to rotate in the other direction, so that the linkage rod remains at the closed end.

[0014] By adopting the above technical solution, the linkage groove is used to limit the swing range of the swing assembly. When the swing plate abuts against the opening end or the moving end, it continues to swing, thereby allowing the car door to open or close. When the linkage rod moves to the opening end, the door timing belt continues to drive the swing plate towards the opening end, causing the linkage rod to continue moving towards the opening end. At this time, the swing plate can drive the door knife base plate to move, thereby opening the car door. Conversely, when the linkage rod moves to the closing end, the door timing belt continues to drive the swing plate towards the closing end, causing the linkage rod to continue moving towards the closing end. At this time, the swing plate can drive the door knife base plate to move, thereby closing the car door.

[0015] Optionally, the swing plate has an unlocking groove, and one end of the unlocking rod is located in the unlocking groove. The swing of the swing plate can force the connecting rod to rotate through the unlocking rod. During the process of the linkage moving from the closed end to the open end, the axis of the unlocking rod and the rotation axis of the unlocking plate approach each other in the horizontal projection plane, so that the unlocking rod can push the unlocking plate and unlock the lock hook assembly.

[0016] By adopting the above technical solution, the unlocking rod is in the unlocking slot. When the swing plate rotates, it can drive the unlocking rod to move, thereby causing the connecting rod plate to rotate, realizing the opening or closing of the first and second blade arms. When there is a power outage, when the lock hook assembly is locked, the inside of the car door cannot be opened, but the landing door will be opened by the rescue team. When the landing door opens, it will drive the blade arm assembly to open, thereby causing the connecting plate to rotate and forcing the unlocking rod to push the swing plate. As the swing plate rotates, the rotation center of the unlocking plate rotates around the rotation point. Although the unlocking rod also rotates around the rotation point, in the horizontal projection, the projection of the rotation center axis of the unlocking plate will gradually approach the axis projection of the unlocking rod, so that the unlocking rod can push the unlocking plate, causing the lock hook assembly to unlock. After the lock hook assembly is unlocked, the car door can be opened, thus facilitating rescue.

[0017] Optionally, the unlocking slot is an oblong hole.

[0018] By adopting the above technical solution, the oblong hole allows the unlocking rod to move up and down within the unlocking groove, thus creating a certain delay between the swing plate and the connecting rod plate. This delay in the opening of the car door by the swing arm assembly gives passengers inside the elevator time to react and anticipate the door opening, thereby improving safety.

[0019] Optionally, the lock hook assembly includes a lock hook rotatably mounted on the door knife base plate, an anti-rotation member fixedly mounted on the door knife base plate, and a push rod mounted on the lock hook. The unlocking plate can push the push rod to force the lock hook to lift and unlock. A reset torsion spring is provided between the lock hook and the door knife base plate.

[0020] By adopting the above technical solution, the end of the lock hook furthest from the push rod can hook onto the car door lock, thereby locking the car door. The rotation center of the lock hook is closer to the push rod, making the end of the lock hook that locks the door lock heavier. Using gravity and the return torsion spring, the lock hook is kept in the return state, i.e., the locked state. When the car door closes, it is automatically locked by the lock hook. The unlocking plate pushes the push rod, forcing the lock hook to lift and unlock, thus disengaging the unlocking plate from the car door and releasing it from the lock. When the lock hook is in the return state, the anti-rotation member abuts against the lower part of the lock hook, keeping it in the return state, i.e., the locked state, thus locking the car door.

[0021] Optionally, the door knife base plate has a limiting groove, and the push rod is located in the limiting groove.

[0022] By adopting the above technical solution, when the lock hook rotates, the push rod can move within the limiting groove. The limiting groove is used to restrict the push rod, thereby limiting the rotation range of the lock hook.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the elevator car is moving between floors, if there is a sudden power outage, the compression spring will keep the swing arm assembly stationary and keep the knife arm assembly open, making it convenient to push the first floor door from the outside, and then push the car door, thus facilitating the subsequent rescue of people trapped in the elevator.

[0025] 2. As the swing plate rotates, the center of rotation of the unlocking plate rotates around the rotation point. Although the unlocking rod also rotates around the rotation point, the projection of the axis of rotation of the unlocking plate gradually approaches the axis projection of the unlocking rod in the horizontal projection. This allows the unlocking rod to push the unlocking plate, thereby unlocking the lock hook assembly. After the lock hook assembly is unlocked, the car door can be opened, thus facilitating rescue. Attached Figure Description

[0026] Figure 1 This is a diagram showing the location of the case where the door knife is used.

[0027] Figure 2 This is a frontal three-dimensional structural diagram of the synchronous gantry knife.

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the back of the synchronous door knife. Figure 1 .

[0029] Figure 4 This is a partial three-dimensional structural diagram of the synchronous gate knife.

[0030] Figure 5 This is a partial front view diagram of the synchronous gate knife.

[0031] Figure 6 This is a schematic diagram of the synchronous door knife in the state where the door knife is open and the car door is locked.

[0032] Figure 7 This is a structural diagram of the swing arm assembly and the locking hook assembly.

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the back of the synchronous gate knife.

[0034] Figure 9 This is a schematic diagram of the synchronous door knife in the state where the door knife is closed and the car door is unlocked.

[0035] Figure 10 This is a schematic diagram of the synchronous door knife in the state where the door knife is open and the car door is unlocked.

[0036] Explanation of reference numerals in the attached drawings: 1. Door knife base plate; 11. Rotation point; 12. Compression spring; 2. Knife arm assembly; 21. First knife arm; 22. Second knife arm; 3. Linkage assembly; 31. Linkage plate; 32. Unlocking rod; 33. Unlocking plate; 4. Swing arm assembly; 41. Swing plate; 42. Linkage rod; 43. Driving rod; 44. Linkage groove; 411. Opening end; 412. Closing end; 45. Unlocking groove; 5. Lock hook assembly; 51. Lock hook component; 52. Anti-rotation component; 53. Push rod; 54. Return torsion spring; 55. Limit groove; 6. Door synchronous belt. Detailed Implementation

[0037] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," "third," and similar expressions are used for descriptive and distinguishing purposes only and should not be construed as indicating or implying the relative importance of the corresponding components.

[0038] The following is in conjunction with the appendix Figure 1 - Appendix Figure 10 This application will be described in further detail.

[0039] This application discloses a synchronous door knife with a car door lock.

[0040] The synchronous door knife is installed on the car door, and the car door is also equipped with a door synchronous belt 6. The door synchronous belt 6 drives the door knife, causing the door knife to open or close, thereby opening or closing the car door.

[0041] Reference Figure 1 and 2 A synchronous door knife with a car door lock includes a door knife base plate 1, a knife arm assembly 2, a connecting rod assembly 3, a swing arm assembly 4, and a lock hook assembly 5. The side of the door knife base plate 1 facing the door landing is the front, and the side away from the door landing is the back. The connecting rod assembly 3 is rotatably connected to the front of the door knife base plate 1. The knife arm assembly 2 is used to open the landing door. The knife arm assembly 2 is connected to the connecting rod assembly 3, which transmits force so that the swing arm assembly 4 can drive the knife arm assembly 2 through the connecting rod assembly 3. The swing arm assembly 4 is located on the back of the door knife base plate 1 and is at the bottom of the entire door knife. The swing arm assembly 4 is connected to the door timing belt 6. When the door timing belt 6 drives the swing arm assembly 4 to swing, the swing arm assembly 4 can drive the connecting rod assembly 3 to rotate, causing the knife arm assembly 2 to open or close. When the knife arm assembly 2 is open, the car door is in a lifting state. When the knife arm is closed, the car door is in a stopped state and connected to the landing door. The swing arm assembly 4 can allow the lock hook assembly 5 to unlock or lock the car door. When unlocked, the car door can be opened; when locked, the car door cannot be opened.

[0042] Reference Figure 1 and 2 Because the door knife needs to mesh with the hall door ball, the connecting shaft of the door timing belt 6 cannot exceed the bottom surface of the knife arm assembly 2. The connecting shaft of the door timing belt 6 is fixed on the swing arm assembly 4. When the swing arm assembly 4 is located at the bottom of the knife arm assembly 2, the space of the door timing belt 6 connecting shaft is the largest, so the door machine thickness can be the smallest; otherwise, the knife arm assembly 2 needs to extend to both sides to ensure the space of the door timing belt 6 connecting shaft, which will increase the door machine thickness.

[0043] Reference Figure 3 and Figure 4The swing arm assembly 4 includes a swing plate 41, a linkage rod 42, and a drive rod 43. The swing plate 41 is rotatably connected to the door knife base plate 1, and the rotation position of the swing plate 41 and the door knife base plate 1 is the rotation point 11. The linkage rod 42 and the drive rod 43 are respectively fixed on the swing plate 41, and the drive rod 43 is the connecting shaft of the door synchronous belt 6. It is used to drive the drive rod 43 to drive the swing plate 41 to swing. The linkage rod 42 is located below the drive rod 43. The door knife base plate 1 has a linkage groove 44, with one end of the linkage rod 42 extending into the linkage groove 44. The linkage groove 44 has an opening end 411 and a closing end 412. When the swing plate 41 swings, the linkage rod 42 can slide within the linkage groove 44, moving to either the opening end 411 or the closing end 412. When the linkage rod 42 moves to the opening end 411, the door timing belt 6 continues to drive the swing plate 41 towards the opening end 411, causing the linkage rod 42 to continue moving towards the opening end 411. At this time, the swing plate 41 can drive the door knife base plate 1 to move, thereby opening the car door. Conversely, when the linkage rod 42 moves to the closing end 412, the door timing belt 6 continues to drive the swing plate 41 towards the closing end 412, causing the linkage rod 42 to continue moving towards the closing end 412. At this time, the swing plate 41 can drive the door knife base plate 1 to move, thereby closing the car door.

[0044] Reference Figure 3 and Figure 4 A compression spring 12 is provided between the swing arm assembly 4 and the door knife base plate 1. One end of the compression spring 12 is rotatably connected to the door knife base plate 1 as a fixed end, and the other end of the compression spring 12 is rotatably connected to the swing plate 41 as a pushing end. The compression spring 12 has a pushing force, and the elastic potential energy of the compression spring 12 can be output to the swing plate 41 through the pushing end. When the pushing direction of the pushing force is on one side of the rotation point 11, the compression spring 12 has a tendency to force the swing arm assembly 4 to rotate in one direction; when the pushing force is on the other side of the rotation point 11, the compression spring 12 has a tendency to force the swing arm assembly 4 to rotate in the other direction. Specifically, when the linkage rod 42 is in the open end 411, the compression spring 12 has a tendency to force the swing plate 41 to rotate in one direction, so that the linkage rod 42 is always kept in the open end 411; when the linkage rod 42 is in the closed end 412, the compression spring 12 has a tendency to force the swing plate 41 to rotate in the other direction, so that the linkage rod 42 is always kept in the closed end 412.

[0045] Reference Figure 4 and Figure 5The linkage assembly 3 includes two linkage plates 31, an unlocking rod 32, and an unlocking plate 33. The two linkage plates 31 are rotatably mounted on the door knife base plate 1. The unlocking rod 32 is fixedly mounted on the upper linkage plate 31 and has a bearing. The unlocking plate 33 is rotatably mounted on the swing plate 41. Under its own weight, the unlocking plate 33 will abut against the lock hook assembly 5. When the linkage plate 31 rotates, the bearing of the unlocking rod 32 can push the unlocking plate 33, allowing the unlocking plate 33 to push the lock hook assembly 5, so that the lock hook assembly 5 is in the unlocked state.

[0046] Reference Figure 6 and Figure 7 The blade arm assembly 2 has a first blade arm 21 and a second blade arm 22. The first blade arm 21 and the second blade arm 22 have the same structure and are arranged opposite to each other. The first blade arm 21 and the second blade arm 22 are close to each other or far apart.

[0047] Reference Figure 7 and Figure 8 The two ends of the connecting rod 31 are rotatably connected to the first blade arm 21 and the second blade arm 22 respectively, and one end of the unlocking plate 33 abuts against the locking hook assembly 5. When the connecting rod assembly 3 rotates, the first blade arm 21 and the second blade arm 22 can move closer or further away from each other, and the unlocking rod 32 can rotate, so that the unlocking rod 32 can push the unlocking plate 33, forcing the unlocking plate 33 to push the locking hook assembly 5, so that the locking hook assembly 5 is in the unlocked state.

[0048] Reference Figure 7 and Figure 8 The swing plate 41 has an unlocking groove 45, and one end of the unlocking rod 32 is located in the unlocking groove 45. The unlocking groove 45 is an oblong hole. The swing of the swing plate 41 can force the connecting rod plate 31 to rotate through the unlocking rod 32. During the process of the connecting rod 42 moving from the closed end 412 to the open end 411, the axis of the unlocking rod 32 and the axis of rotation of the unlocking plate 33 approach each other in the horizontal projection plane, so that the unlocking rod 32 can push the unlocking plate 33 to unlock the lock hook assembly 5. Specifically, as the swing plate 41 rotates, the rotation center of the unlocking plate 33 rotates around the rotation point 11. Although the unlocking rod 32 also rotates around the rotation point 11, in the horizontal projection, the projection of the axis of rotation of the unlocking plate 33 will gradually approach the axis projection of the unlocking rod 32, so that the unlocking rod 32 can push the unlocking plate 33 to unlock the lock hook assembly 5.

[0049] The locking hook assembly 5 includes a locking hook 51, an anti-rotation member 52, and a push rod 53. The locking hook 51 is rotatably mounted on the door knife base plate 1, and a return torsion spring 54 is provided between the locking hook 51 and the door knife base plate 1. The push rod 53 is fixedly mounted on one end of the locking hook 51. The end of the locking hook 51 away from the push rod 53 can hook the car door lock, thereby locking the car door. The rotation center of the locking hook 51 is closer to the push rod 53, so that the end of the locking hook 51 that locks the door lock is heavier. Thus, by using gravity and the return torsion spring 54, the locking hook 51 is in the return state, that is, the locked state. When the car door is closed, the car door is automatically locked by the locking hook 51. The push rod 53 is also provided with a bearing. The bearing of the unlocking plate 33 can push the bearing on the push rod 53 to force the locking hook 51 to lift and unlock, thereby disengaging the unlocking plate 33 from the car door and no longer locking the car door. When the locking hook 51 is in the reset state, the anti-rotation member 52 can abut against the lower part of the locking hook 51, keeping the locking hook 51 in the reset state, that is, the locked state.

[0050] The bottom plate 1 of the door knife has a limit groove 55 (refer to) Figure 6 One end of the push rod 53 extends into the limiting groove 55. When the locking hook 51 rotates, the push rod 53 can move within the limiting groove 55. The limiting groove 55 is used to limit the push rod 53, thereby limiting the rotation range of the locking hook 51.

[0051] The implementation principle of this embodiment is as follows: During the vertical movement of the car, the locking hook 51 remains horizontal, thus maintaining a locked state for locking the car door. At this time, the knife door is open and the car door is not unlocked. (e.g.) Figure 6 )

[0052] When the car stops at a floor level and the car door needs to be opened to allow passengers to exit, the door timing belt 6 will push the swing arm to rotate. At this time, the locking hook 51 will lift up to unlock, and the knife door will close and connect with the landing door. Simultaneously, the linkage rod 42 will move to the open end 411 (e.g., Figure 9 Then continue to push the swing arm, which will drive the car door to open, and the opening of the car door will drive the landing door to open, thus realizing the synchronous opening of the car door and the landing door.

[0053] When the car door needs to be closed, the door timing belt 6 pushes the swing arm to rotate in the opposite direction. At this time, the knife door will open. During the closing process of the car door, the locking hook 51 will contact the car door lock, causing the locking hook 51 to lift up (e.g. Figure 10 When the locking hook 51 locks the car door, the locking hook 51 remains horizontal.

[0054] While the elevator is moving, the synchronous door knife remains in an open and unlocked state (e.g.) Figure 6If a power outage occurs at this time, the thrust of the compression spring 12 will keep the linkage rod 42 at the closed end 412 of the linkage groove 44, so that the synchronous door knife will always be open, thereby reducing the difficulty of rescuing people in the elevator after the elevator loses power.

[0055] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, based on the technical solutions of this invention, those skilled in the art can propose various interchangeable structural methods and implementation methods without changing the essential spirit of this invention. Therefore, the above specific embodiments and accompanying drawings are merely illustrative descriptions of the technical solutions of this invention and should not be considered as the entirety of this invention or as a limitation or restriction of the technical solutions of this invention. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A synchronous door knife with a car door lock, comprising a door knife base plate (1), a knife arm assembly (2) disposed on the door knife base plate (1) and used to open the landing door, a connecting rod assembly (3) rotatably disposed on the door knife base plate (1) and used to drive the knife arm assembly (2) to open or close, and a swing arm assembly (4) rotatably disposed on the door knife base plate (1) and used to drive the connecting rod assembly (3) to rotate; the door knife base plate (1) is further provided with a lock hook assembly (5) for locking or unlocking the car door; characterized in that: The swing arm assembly (4) has a rotation point (11) between it and the door knife base plate (1). A compression spring (12) is provided between the swing arm assembly (4) and the door knife base plate (1). The compression spring (12) has a pushing force. When the pushing force is located on one side of the rotation point (11), the compression spring (12) tends to force the swing arm assembly (4) to rotate to one side. When the pushing force is located on the other side of the rotation point (11), the compression spring (12) tends to force the swing arm assembly (4) to rotate to the other side. The blade arm assembly (2) has a first blade arm (21) and a second blade arm (22). The first blade arm (21) and the second blade arm (22) are rotatably connected to the connecting rod assembly (3). When the connecting rod assembly (3) rotates, the first blade arm (21) and the second blade arm (22) move closer to or further away from each other. The linkage assembly (3) includes two linkage plates (31), an unlocking rod (32) fixed to one of the linkage plates (31), and an unlocking plate (33) rotatably disposed on the swing arm assembly (4); the two ends of the linkage plate (31) are rotatably connected to the first blade arm (21) and the second blade arm (22) respectively, and one end of the unlocking plate (33) abuts against the locking hook assembly (5); when the linkage assembly (3) rotates, the unlocking rod (32) can push the unlocking plate (33), forcing the unlocking plate (33) to push the locking hook assembly (5), so that the locking hook assembly (5) is in the unlocked state; The swing arm assembly (4) includes a swing plate (41) rotatably mounted on the door knife base plate (1), a linkage rod (42) and a drive rod (43) respectively fixedly mounted on the swing plate (41). The door knife base plate (1) has a linkage groove (44), and the linkage rod (42) is located in the linkage groove (44). The linkage groove (44) has an open end (411) and a closed end (412). When the swing plate (41) swings, the linkage rod (42) can slide in the linkage groove (44) to achieve linkage. The lever (42) is located at the open end (411) or the closed end (412); when the lever (42) is located at the open end (411), the compression spring (12) tends to force the oscillating plate (41) to rotate in one direction, so that the lever (42) remains at the open end (411); when the lever (42) is located at the closed end (412), the compression spring (12) tends to force the oscillating plate (41) to rotate in the other direction, so that the lever (42) remains at the closed end (412). The swing plate (41) has an unlocking groove (45), and one end of the unlocking rod (32) is located in the unlocking groove (45). The swing plate (41) can swing and force the connecting rod plate (31) to rotate through the unlocking rod (32). During the process of the linkage rod (42) moving from the closed end (412) to the open end (411), the axis of the unlocking rod (32) and the rotation axis of the unlocking plate (33) approach each other in the horizontal projection plane, so that the unlocking rod (32) can push the unlocking plate (33) and unlock the lock hook assembly (5).

2. A synchronous door knife with a car door lock according to claim 1, characterized in that: The unlocking slot (45) is an oblong hole.

3. A synchronous door knife with a car door lock according to claim 1, characterized in that: The locking hook assembly (5) includes a locking hook (51) rotatably mounted on the door knife base plate (1), an anti-rotation member (52) fixedly mounted on the door knife base plate (1), and a push rod (53) mounted on the locking hook (51). The unlocking plate (33) can push the push rod (53) to force the locking hook (51) to lift up and unlock. A reset torsion spring (54) is provided between the locking hook (51) and the door knife base plate (1).

4. A synchronous door knife with a car door lock according to claim 3, characterized in that: The door knife base plate (1) has a limiting groove (55), and the push rod (53) is located in the limiting groove (55).

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