Gangway door lock and gangway door assembly

Abstract

The present application relates to a kind of gangway door lock and gangway door assembly, belong to gangway door technical field, gangway door lock includes lock seat component, lock box component and prompt component, lock seat component includes lock seat and lock pin fixedly arranged on lock seat, lock box component includes lock box and lock hook rotationally arranged in lock box, lock hook has long lock tongue and short lock tongue, lock groove is formed between long lock tongue and short lock tongue, prompt component includes micro switch, double-end swing arm piece and elastic piece.The present application is by setting prompt component so that crew can accurately and intuitively understand the locking and unlocking state of gangway door, to this end, eliminate the security risk in flight process, guarantee the security of use, and by short lock tongue and double-end swing arm piece driving cooperation to trigger micro switch, can effectively prevent the collision of long lock tongue and double-end swing arm piece due to installation error during gangway door closing.

Description

Technical Field

[0001] This invention relates to a gangway door lock and a gangway door assembly, belonging to the field of gangway door technology. Background Technology

[0002] Currently, aircraft commonly use gangways to allow passengers to board and disembark. When in use, the gangway is opened and lowered to rest against the ground; when not in use, it is closed and retracted into the cabin. During the lowering and retraction of the gangway, a gangway lock is required to unlock or lock it.

[0003] Existing boarding stairs door locks typically rely on visual inspection of the door's open / closed status to determine its lock / unlock position. This method makes it difficult for the crew to accurately and intuitively understand the door's lock / unlock status. When the boarding stairs door mis-locks, fails to lock, or is not properly engaged, the crew cannot accurately and intuitively understand the door's current status, creating safety hazards during flight and reducing the overall safety of the boarding stairs door locks.

[0004] Therefore, in order to enable the crew to accurately and intuitively understand the locking and unlocking status of the gangway doors, a new gangway door assembly with an optimized structure is needed. Summary of the Invention

[0005] The purpose of this invention is to provide a gangway door lock and gangway door assembly that allows crew members to accurately and intuitively understand the locked and unlocked status of the gangway door.

[0006] This invention provides a gangway door lock, disposed on the gangway door and its frame, for locking or unlocking the gangway door, and has the following features:

[0007] A lock seat assembly is provided on the door frame of the gangway door, including a lock seat and a locking pin fixedly provided on the lock seat;

[0008] A lock box assembly, mounted on the gangway door, includes a lock box and a lock hook rotatably disposed within the lock box. The lock hook has a long latch and a short latch, with a lock groove formed between the long latch and the short latch; and

[0009] An indicator component, located on the lock seat assembly, is used to indicate whether the gangway door lock is in a locked or unlocked state, thus indicating that the gangway door is locked or unlocked.

[0010] The prompt components include:

[0011] A micro switch is mounted on the lock base;

[0012] The double-headed swing arm is rotatably mounted on the lock seat and can rotate between the first trigger position and the second trigger position.

[0013] When the double-headed swing arm is in the first triggered position, the first swing end of the double-headed swing arm presses against the contact of the micro switch, closing it. When the double-headed swing arm is in the second triggered position, the first swing end of the double-headed swing arm disengages from the contact of the micro switch, opening it.

[0014] An elastic element, mounted on the lock seat, is used to give the double-headed swing arm a tendency to rotate toward the first trigger position.

[0015] During the closing process of the gangway door, the locking pin and the long locking tongue collide and engage to make the locking hook rotate in the locking direction. During this process, the locking pin gradually engages with the locking groove. At the same time, the short locking tongue engages with the second swing end of the double-headed swing arm and drives the double-headed swing arm to rotate gradually from the first trigger position to the second trigger position.

[0016] As the gangway door gradually opens from the closed state, the locking hook rotates in the unlocking direction under the action of external force. During this process, the locking pin gradually disengages from the locking groove, and at the same time, the short locking tongue disengages from the second swing end of the double-headed swing arm. Under the action of the elastic element, the double-headed swing arm gradually rotates from the second trigger position to the first trigger position.

[0017] The gangway door lock provided by this invention may also have the following features:

[0018] The double-headed swing arm is a rod, with its middle section forming a rotational support with the lock seat.

[0019] The first swing end of the double-headed swing arm is equipped with a trigger part, which is used to press the contact of the micro switch.

[0020] The second swing end of the double-headed swing arm is provided with a drive engagement part, which is used to engage with the short locking tongue drive.

[0021] The gangway door lock provided by this invention may also have the following features:

[0022] The short locking tongue is provided with a driving structure for driving engagement with a driving mating part, and includes an adjacent guide part and a driving part. The guide part guides the driving mating part to drive engagement with the driving part, and the driving part drives engagement with the driving mating part.

[0023] When the locking hook rotates in the locking direction, the drive engagement part first abuts against the guide part, and then abuts against the drive engagement part under the action of the guide part, thereby driving the double-headed swing arm to rotate from the first trigger position to the second trigger position.

[0024] The gangway door lock provided by this invention may also have the following features:

[0025] The driving part and the driving mating part are both convex arc surfaces, and the guiding part is an inclined surface.

[0026] The gangway door lock provided by this invention may also have the following features:

[0027] The elastic element is a compression spring, one end of which abuts against the lock seat, and the other end abuts against a side wall in the swing direction of the trigger part.

[0028] The other sidewall in the swing direction of the trigger corresponds to the contact of the micro switch.

[0029] In the unlocked state, the double-headed swing arm remains in the first trigger position under the action of the elastic element.

[0030] The gangway door lock provided by this invention may also have the following features:

[0031] Specifically, the longer bolt extending towards the pin is greater than the shorter bolt extending towards the pin.

[0032] The drive structure is located on the side wall of the short latch facing away from the long latch, and the guide part is connected to the extension end of the short latch.

[0033] During the closing process of the gangway door, the locking pin engages with the side wall of the long latch facing the short latch, causing the locking hook to rotate in the locking direction.

[0034] The gangway door lock provided by this invention may also have the following features:

[0035] The lock base has a mounting portion extending toward the side where the lock hook is located.

[0036] The locking pin is fixed to the extension end of the mounting section.

[0037] The double-headed swing arm is rotatably supported on the mounting part, and the drive mating part extends to the radially outer side of the locking pin.

[0038] A gap is formed between the drive engagement part and the locking pin to allow the short locking tongue to extend into, so that the drive structure and the drive engagement part can engage in a drive engagement.

[0039] The gangway door lock provided by this invention may also have the following features:

[0040] The lock box assembly also includes:

[0041] The first reset element, located inside the lock housing, is used to give the lock hook a tendency to rotate in the unlocking direction;

[0042] A stop, rotatably mounted within the lock housing, is used to block the lock hook from rotating in the unlocking direction; and

[0043] The second reset element, located inside the lock box, is used to make the stop element tend to rotate toward the side where the lock hook is located, thereby causing the stop element to block the lock hook.

[0044] The gangway door lock provided by this invention may also have the following features:

[0045] The stop has a first engaging portion on its circumferential surface, and the locking hook has a second engaging portion on its circumferential surface.

[0046] The first engaging part selectively engages with different positions of the second engaging part, and after engagement, they form a barrier in the direction in which the lock hook rotates along the unlocking direction.

[0047] The first meshing portion includes a first tooth, and the second meshing portion includes three consecutive second teeth.

[0048] When the first tooth engages with the second teeth at both ends, the locking pin engages with or disengages from the locking groove; when the first tooth engages with the second tooth in the middle, the locking pin partially engages with the locking groove.

[0049] This invention provides a gangway door assembly, characterized by comprising:

[0050] gangway door;

[0051] Door frame; and

[0052] gangway door locks,

[0053] The gangway door lock is the same as described above.

[0054] Therefore, the present invention has the following advantages compared with the prior art:

[0055] According to the gangway door lock and gangway door assembly of the present invention, the gangway door assembly includes a gangway door, a door frame, a gangway door lock, an inner unlocking component, and an outer unlocking component. The gangway door lock includes a lock seat assembly, a lock box assembly, and a notification component. The lock seat assembly includes a lock seat and a locking pin fixedly mounted on the lock seat. The lock box assembly includes a lock box and a locking hook rotatably mounted within the lock box. The locking hook has a long locking tongue and a short locking tongue, with a locking groove formed between the long and short locking tongues. The notification component includes a micro switch, a double-headed swing arm, and an elastic element. During the closing process of the gangway door, the locking hook moves synchronously with the gangway door. During the process, the long latch on the locking hook strikes and engages with the locking pin on the door frame, causing the locking hook to rotate in the locking direction. During the rotation, the locking pin gradually engages with the locking groove. At the same time, the short latch engages with the second swing end of the double-headed swing arm, driving the double-headed swing arm to rotate gradually from the first trigger position to the second trigger position. When the gangway door is completely closed, the locking pin and the locking groove are fully engaged, thus locking the gangway door lock. At the same time, the double-headed swing arm rotates to the second trigger position, changing the state of the micro switch, thereby triggering the micro switch to send a signal indicating that the gangway door lock is in the locked state, thus indicating that the gangway door has been locked.

[0056] As the gangway door gradually opens from the closed state, the locking hook rotates in the unlocking direction under the action of external force. During the rotation, the locking pin gradually disengages from the locking groove, and at the same time, the short locking tongue disengages from the second swing end of the double-headed swing arm. Under the action of the elastic element, the double-headed swing arm gradually rotates from the second trigger position to the first trigger position. When the gangway door opens to a certain angle, the locking pin completely disengages from the locking groove. At the same time, the double-headed swing arm rotates to the first trigger position, changing the state of the micro switch. This triggers the micro switch to send a signal indicating that the gangway door lock is in the unlocked state, thus indicating that the gangway door has been unlocked. This allows the crew to accurately and intuitively understand the locking and unlocking status of the gangway door, thereby eliminating potential safety hazards during flight and ensuring safe operation. Furthermore, the short locking tongue and the double-headed swing arm drive the micro switch, effectively preventing the long locking tongue from colliding with the double-headed swing arm during the closing process due to installation errors. Attached Figure Description

[0057] Figure 1 This is a three-dimensional structural schematic diagram of the gangway door assembly in an embodiment of the present invention;

[0058] Figure 2 This is a three-dimensional structural diagram of the gangway door lock in an embodiment of the present invention;

[0059] Figure 3 This is a schematic diagram of the structure of the double-headed swing arm component in its first trigger position in an embodiment of the present invention;

[0060] Figure 4This is a schematic diagram of the structure of the double-headed swing arm component in its second trigger position in an embodiment of the present invention;

[0061] Figure 5 This is a three-dimensional structural diagram of the lock seat assembly in an embodiment of the present invention;

[0062] Figure 6 This is a three-dimensional structural diagram of the lock box assembly in an embodiment of the present invention;

[0063] Figure 7 This is a three-dimensional structural schematic diagram of the double-headed swing arm component in an embodiment of the present invention;

[0064] Figure 8 This is a cross-sectional view of the lock seat assembly in an embodiment of the present invention;

[0065] Figure 9 This is a partial structural schematic diagram of the lock box assembly in an embodiment of the present invention;

[0066] Figure 10 This is a cross-sectional view of the lock box assembly in an embodiment of the present invention;

[0067] Figure 11 This is a schematic diagram of the main view structure of the internal unlocking component in an embodiment of the present invention;

[0068] Figure 12 This is a schematic diagram of the main structure of the external unlocking component in an embodiment of the present invention.

[0069] The markings in the attached diagram are described below:

[0070] gangway door assembly 100a; gangway door lock 10;

[0071] Lock seat assembly 11; Lock seat 111; Mounting part 111a; Locking pin 112; Support shaft 113;

[0072] Lock box assembly 12; lock box 121; lock hook 122; long lock tongue 122a; short lock tongue 122b; drive structure 221; guide part 221a; drive part 221b; lock groove 122c; second engagement part 122d; second tooth part 221d; first reset member 123; stop member 124; first engagement part 124a; first tooth part 241a; second reset member 125;

[0073] Prompt component 13; micro switch 131; double-headed swing arm 132; trigger part 132a; drive engagement part 132b; elastic element 133;

[0074] Internal unlocking component 20; external unlocking component 30; first pull rope 40; second pull rope 50. Detailed Implementation

[0075] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes the gangway door lock and gangway door assembly in detail with reference to the embodiments and accompanying drawings.

[0076] This embodiment provides a gangway door lock and gangway door assembly that allows crew members to accurately and intuitively understand the locked and unlocked status of the gangway door.

[0077] Figure 1 This is a three-dimensional structural schematic diagram of the gangway door assembly in an embodiment of the present invention.

[0078] like Figure 1 As shown, the gangway door assembly 100a of this embodiment includes a gangway door (not shown), a door frame (not shown), a gangway door lock 10, an inner unlocking component 20, and an outer unlocking component 30. The gangway door lock 10 is disposed on the gangway door and its door frame. The inner unlocking component 20 is disposed on the surface of the gangway door facing the cabin interior and is used to unlock the gangway door lock 10 from inside the cabin. The outer unlocking component 30 is disposed on the surface of the gangway door facing the cabin exterior and is used to unlock the gangway door lock 10 from outside the cabin.

[0079] It should be noted that the bottom of the gangway door is hinged to the door frame, and the gangway door lock 10 is located at the top of the gangway door and the corresponding part of the door frame. When in use, the gangway door rotates around the hinge point between itself and the door frame to open or close.

[0080] In this embodiment, there are two gangway door locks 10. The two gangway door locks 10 are arranged on the gangway door at intervals, thereby forming two locking points between the gangway door and the door frame to ensure the stability of the locking.

[0081] Figure 2 This is a three-dimensional structural diagram of the gangway door lock in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the double-headed swing arm component in its first trigger position in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the double-headed swing arm component in its second trigger position in an embodiment of the present invention.

[0082] like Figures 2 to 4As shown, the gangway door lock 10 includes a lock seat assembly 11, a lock box assembly 12, and a notification assembly 13. The lock seat assembly 11 is mounted on the door frame of the gangway door and includes a lock seat 111 and a locking pin 112 fixedly mounted on the lock seat 111. The lock box assembly 12 is mounted on the gangway door and includes a lock box 121 and a locking hook 122 rotatably mounted within the lock box 121. The locking hook 122 has a long locking tongue 122a and a short locking tongue 122b, with a locking groove 122c formed between the long locking tongue 122a and the short locking tongue 122b. The notification assembly 13 is mounted on the lock seat assembly 11 and is used to indicate whether the gangway door lock 10 is in a locked or unlocked state, thus indicating that the gangway door has been locked or unlocked. It includes a micro switch 131, a double-headed swing arm 132, and an elastic element 133. The micro switch 131 is mounted on the lock seat 111. The double-headed swing arm 132 is rotatably mounted on the lock seat 111 and can rotate between a first trigger position and a second trigger position. When the double-headed swing arm 132 is in the first trigger position, the first swinging end of the double-headed swing arm 132 presses the contact of the micro switch 131 to close it; when in the second trigger position, the first swinging end of the double-headed swing arm 132 disengages from the contact of the micro switch 131 to open it. An elastic element 133 is mounted on the lock seat 111 to give the double-headed swing arm 132 a tendency to rotate towards the first trigger position. Figure 3 The direction indicated by D1 is the locking direction. Figure 4 The direction indicated by D2 is the unlocking direction.

[0083] Understandably, during the closing process of the gangway door, the locking hook 122 moves synchronously with the gangway door. During the movement, the long locking tongue 122a on the locking hook 122 impacts and engages with the locking pin 112 on the door frame, causing the locking hook 122 to rotate in the locking direction. During the rotation, the locking pin 112 gradually engages with the locking groove 122c. At the same time, the short locking tongue 122b engages with the second swing end of the double-headed swing arm 132, driving the double-headed swing arm 132 to gradually rotate from the first trigger position to the second trigger position. When the gangway door is completely closed, the locking pin 112 and the locking groove 122c are fully engaged, realizing the locking of the gangway door lock 10. At the same time, the double-headed swing arm 132 rotates to the second trigger position, changing the state of the micro switch 131, thereby triggering the micro switch 131 to send a signal indicating that the gangway door lock 10 is in the locked state, thus indicating that the gangway door has been locked.

[0084] As the gangway door gradually opens from the closed state, the locking hook 122 rotates in the unlocking direction under the action of external force. During the rotation, the locking pin 112 gradually disengages from the locking groove 122c, and at the same time, the short locking tongue 122b disengages from the second swing end of the double-headed swing arm 132. Under the action of the elastic element 133, the double-headed swing arm 132 gradually rotates from the second trigger position to the first trigger position. When the gangway door opens to a certain angle, the locking pin 112 completely disengages from the locking groove 122c, and at the same time, the double-headed swing arm 132 rotates to the first trigger position, causing the micro switch 1 to... The state of 31 is changed, thereby triggering micro switch 131 to send a signal indicating that the gangway door lock 10 is in the unlocked state, thus indicating that the gangway door has been unlocked. This allows the crew to accurately and intuitively understand the locking and unlocking status of the gangway door, thereby eliminating potential safety hazards during flight and ensuring safe use. Furthermore, the short latch 122b and the double-headed swing arm 132 drive the micro switch 131 to effectively prevent the long latch 122a from colliding with the double-headed swing arm 132 during the closing of the gangway door due to installation errors.

[0085] Figure 5 This is a three-dimensional structural diagram of the lock seat assembly in an embodiment of the present invention.

[0086] like Figure 5 As shown, the double-headed swing arm 132 is a rod, with its middle portion forming a rotatable support with the lock seat 111. The first swing end of the double-headed swing arm 132 is provided with a trigger part 132a, which is used to press the contact of the micro switch 131. The second swing end of the double-headed swing arm 132 is provided with a drive engagement part 132b, which is used for drive engagement with the short locking tongue 122b.

[0087] Understandably, when the locking hook 122 rotates in the locking direction, the long locking tongue 122a on the locking hook 122 engages with the driving engagement part 132b of the second swing end on the double-headed swing arm 132, thereby driving the double-headed swing arm 132 to rotate from the first trigger position to the second trigger position, so that the trigger part 132a of the first swing end on the double-headed swing arm 132 disengages from the contact of the micro switch 131 and puts it in the open state, thereby realizing the change of the state of the micro switch 131.

[0088] In this embodiment, the double-headed swing arm 132 is mounted on the lock seat 111 via a support shaft 113. The support shaft 113 is fixed on the lock seat 111, and the double-headed swing arm 132 is rotatably sleeved on the support shaft 113.

[0089] Figure 6 This is a three-dimensional structural diagram of the lock box assembly in an embodiment of the present invention.

[0090] like Figure 6As shown, a drive structure 221 is provided on the short locking tongue 122b, which is used to drive and cooperate with the drive mating part 132b, and includes a guide part 221a and a drive part 221b arranged adjacent to each other. The guide part 221a is used to guide the drive mating part 132b to drive and cooperate with the drive part 221b, and the drive part 221b is used to drive and cooperate with the drive mating part 132b.

[0091] Understandably, when the locking hook 122 rotates in the locking direction, the driving engagement part 132b first abuts against the guide part 221a, and then abuts against the driving engagement part 132b under the action of the guide part 221a, thereby driving the double-headed swing arm 132 to rotate from the first trigger position to the second trigger position.

[0092] Figure 7 This is a three-dimensional structural diagram of the double-headed swing arm component in an embodiment of the present invention.

[0093] like Figure 6 and Figure 7 As shown, both the driving part 221b and the driving mating part 132b are convex arc surfaces, and the guiding part 221a is an inclined surface.

[0094] Understandably, when the locking hook 122 rotates in the locking direction, the driving engagement part 132b first abuts against the guide part 221a, and then, as the locking hook 122 continues to rotate, the driving engagement part 132b gradually abuts against the driving part 221b. Since the driving part 221b is a convex arc surface, it can push the double-headed swing arm 132 to rotate to the second trigger position during the engagement process. When the driving engagement part 132b abuts against the convex position of the driving part 221b, the double-headed swing arm 132 rotates to the second trigger position. During the engagement process, the guide part 221a plays a transitional role and guides the driving engagement part 132b to abut against the driving part 221b.

[0095] Figure 8 This is a cross-sectional view of the lock seat assembly in an embodiment of the present invention.

[0096] like Figure 8 As shown, the elastic element 133 is a compression spring, one end of which abuts against the lock seat 111, and the other end abuts against a side wall in the swing direction of the trigger part 132a. The other side wall in the swing direction of the trigger part 132a corresponds to the contact of the micro switch 131. In the unlocked state, the double-headed swing arm 132 is held in the first trigger position by the action of the elastic element 133.

[0097] Understandably, when the drive structure 221 engages with the drive engagement part 132b, the double-headed swing arm 132 rotates from the first trigger position to the second trigger position, during which the elastic element 133 gradually accumulates force; when the drive structure 221 disengages from the drive engagement part 132b, the double-headed swing arm 132 rotates from the second trigger position to the first trigger position under the reset action of the elastic element 133, and the trigger part 132a on the double-headed swing arm 132 presses the contact of the micro switch 131.

[0098] like Figure 6 As shown, the length of the long latch 122a extending toward the side where the locking pin 112 is located is greater than the length of the short latch 122b extending toward the side where the locking pin 112 is located. The drive structure 221 is provided on the side wall of the short latch 122b facing away from the long latch 122a, and the guide part 221a is connected to the extension end of the short latch 122b.

[0099] Understandably, during the closing process of the gangway door, the locking pin 112 engages with the side wall of the long locking tongue 122a facing the short locking tongue 122b, causing the locking hook 122 to rotate in the locking direction. This allows the locking hook 122 to push the double-headed swing arm 132 to rotate to the second trigger position through the drive structure 221 during rotation.

[0100] like Figure 8 As shown, the lock base 111 has a mounting portion 111a extending toward the side where the lock hook 122 is located, and the lock pin 112 is fixed to the extended end of the mounting portion 111a. The double-headed swing arm 132 is rotatably supported on the mounting portion 111a, and the drive engagement portion 132b extends to the radially outer side of the lock pin 112. A gap is formed between the drive engagement portion 132b and the lock pin 112 for the short lock tongue 122b to extend into, so that the drive structure 221 and the drive engagement portion 132b are driven into engagement.

[0101] Understandably, during the closing of the gangway door, the short latch 122b on the hook 122 can extend into the gap and engage with the locking pin 112, causing the hook 122 to rotate in the locking direction. During the rotation of the hook 122, the drive structure 221 can engage with the drive engagement part 132b.

[0102] Figure 9 This is a partial structural schematic diagram of the lock box assembly in an embodiment of the present invention.

[0103] like Figure 9As shown, the lock box assembly 12 also includes a first reset member 123, a stop member 124, and a second reset member 125. The first reset member 123 is disposed within the lock box 121 and is used to give the lock hook 122 a tendency to rotate in the unlocking direction. The stop member 124 is rotatably disposed within the lock box 121 and is used to block the lock hook 122 in the direction of rotation in the unlocking direction. The second reset member 125 is disposed within the lock box 121 and is used to give the stop member 124 a tendency to rotate toward the side where the lock hook 122 is located, thereby blocking the lock hook 122.

[0104] Understandably, the stop 124 can resist the force of the first reset member 123, keeping the hook 122 engaged with the lock groove 122c, thus keeping the gangway door lock 10 in a locked state. In addition, after the stop 124 rotates away from the hook 122 under the action of external force to remove the obstruction, the hook 122 can rotate in the unlocking direction under the action of the first reset member 123, thereby disengaging from the lock groove 122c. After the external force on the stop 124 is removed, the hook 122 can rotate to the position that forms an obstruction to the hook 122 under the action of the second reset member 125.

[0105] In this embodiment, both the first reset member 123 and the second reset member 125 are torsion springs, and the lock hook 122 and the stop member 124 are both installed inside the lock box 121 via fixed shafts. Specifically, the first reset member 123 and the second reset member 125 are respectively sleeved on their corresponding fixed shafts. One end of the first reset member 123 abuts against the side wall of the lock box 121, and the other end abuts against the lock hook 122. One end of the second reset member 125 abuts against the side wall of the lock box 121, and the other end abuts against the stop member 124.

[0106] like Figure 9 As shown, the circumferential surface of the stop 124 has a first engaging portion 124a, and the circumferential surface of the locking hook 122 has a second engaging portion 122d. The first engaging portion 124a selectively engages with different positions of the second engaging portion 122d, and after engagement, they form a blockage in the direction in which the locking hook 122 rotates along the unlocking direction. The first engaging portion 124a includes a first tooth 241a, and the second engaging portion 122d includes three consecutive second teeth 221d.

[0107] Understandably, when the first tooth 241a engages with the second tooth 221d at one end, the stop 124 blocks the hook 122 in the locked position, and the locking pin 112 engages with the locking groove 122c. When the first tooth 241a engages with the second tooth 221d at the other end, the stop 124 blocks the hook 122 in the unlocked position, and the locking pin 112 disengages from the locking groove 122c. This allows the stop 124 to block the hook 122 in the direction in which the hook 122 rotates in the unlocking direction. When the first tooth 241a engages with the second tooth 221d in the middle, the stop 124 blocks the hook 122 in the transition position, and the locking pin 112 partially engages with the locking groove 122c. This allows the hook 122 to disengage from the locked position to the transition position when it disengages, instead of directly disengaging to the unlocked position, thus providing a safety function.

[0108] Figure 10 This is a cross-sectional view of the lock box assembly in an embodiment of the present invention; Figure 11 This is a schematic diagram of the main structure of the internal unlocking component in an embodiment of the present invention.

[0109] like Figure 1 , Figure 10 as well as Figure 11 As shown, the two gangway door locks 10 are respectively connected to the inner unlocking assembly 20 via a first pull rope 40. Specifically, one end of the first pull rope 40 is fixedly connected to the rotating end of the stop member 124, and the other end is fixedly connected to a swing end of the inner swing arm of the inner unlocking assembly 20.

[0110] Understandably, when the inner unlocking component 20 is working, it can drive the swing arm inside the inner unlocking component 20 to rotate. During the rotation of the swing arm, it can pull the stop 124 inside the two gangway door locks 10 to rotate toward the side away from the lock hook 122 through the first pull rope 40, thereby removing the stop 124 from blocking the lock hook 122 in the unlocking direction. As a result, the lock hook 122 can rotate in the unlocking direction under the action of the first reset component 123, thereby unlocking the gangway door lock 10.

[0111] Figure 12 This is a schematic diagram of the main structure of the external unlocking component in an embodiment of the present invention.

[0112] like Figure 1 and Figure 12 As shown, the inner unlocking component 20 is connected to the outer unlocking component 30 via a second pull rope 50. Specifically, one end of the second pull rope 50 is fixedly connected to a swing end of the inner swing arm of the inner unlocking component 20, and the other end is fixedly connected to a swing end of the inner swing arm of the outer unlocking component 30.

[0113] Understandably, when the external unlocking component 30 is in operation, it can pull the swing arm in the internal unlocking component 20 to rotate via the second pull rope 50, thereby pulling the stop 124 in the two gangway door locks 10 to rotate toward the side away from the lock hook 122 via the first pull rope 40, thereby unlocking the gangway door lock 10.

[0114] In this embodiment, the structure of the inner unlocking component 20 and the outer unlocking component 30 is consistent with the structure of the "inner locking disc component and outer locking disc component" disclosed in Chinese Invention Patent CN202111268319.9, so it will not be described in detail here.

[0115] The role and effect of the embodiments

[0116] According to the gangway door lock and gangway door assembly involved in this embodiment, the gangway door assembly includes a gangway door, a door frame, a gangway door lock, an inner unlocking component, and an outer unlocking component. The gangway door lock includes a lock seat assembly, a lock box assembly, and a warning component. The lock seat assembly includes a lock seat and a locking pin fixedly mounted on the lock seat. The lock box assembly includes a lock box and a locking hook rotatably mounted within the lock box. The locking hook has a long locking tongue and a short locking tongue, with a locking groove formed between the long and short locking tongues. The warning component includes a micro switch, a double-headed swing arm, and an elastic element. During the closing process of the gangway door, the locking hook moves synchronously with the gangway door. During the process, the long latch on the locking hook strikes and engages with the locking pin on the door frame, causing the locking hook to rotate in the locking direction. During the rotation, the locking pin gradually engages with the locking groove. At the same time, the short latch engages with the second swing end of the double-headed swing arm, driving the double-headed swing arm to rotate gradually from the first trigger position to the second trigger position. When the gangway door is completely closed, the locking pin and the locking groove are fully engaged, thus locking the gangway door lock. At the same time, the double-headed swing arm rotates to the second trigger position, changing the state of the micro switch, thereby triggering the micro switch to send a signal indicating that the gangway door lock is in the locked state, thus indicating that the gangway door has been locked.

[0117] As the gangway door gradually opens from the closed state, the locking hook rotates in the unlocking direction under the action of external force. During the rotation, the locking pin gradually disengages from the locking groove, and at the same time, the short locking tongue disengages from the second swing end of the double-headed swing arm. Under the action of the elastic element, the double-headed swing arm gradually rotates from the second trigger position to the first trigger position. When the gangway door opens to a certain angle, the locking pin completely disengages from the locking groove. At the same time, the double-headed swing arm rotates to the first trigger position, changing the state of the micro switch. This triggers the micro switch to send a signal indicating that the gangway door lock is in the unlocked state, thus indicating that the gangway door has been unlocked. This allows the crew to accurately and intuitively understand the locking and unlocking status of the gangway door, thereby eliminating potential safety hazards during flight and ensuring safe operation. Furthermore, the short locking tongue and the double-headed swing arm drive the micro switch, effectively preventing the long locking tongue from colliding with the double-headed swing arm during the closing process due to installation errors.

[0118] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gangway door lock, disposed on the gangway door and its frame, for locking or unlocking the gangway door, characterized in that, include: A lock seat assembly (11) is provided on the door frame of the gangway door, including a lock seat (111) and a locking pin (112) fixedly provided on the lock seat (111); A lock box assembly (12), disposed on the gangway door, includes a lock box (121) and a lock hook (122) rotatably disposed within the lock box (121). The lock hook (122) has a long lock tongue (122a) and a short lock tongue (122b), and a lock groove (122c) is formed between the long lock tongue (122a) and the short lock tongue (122b); and A notification component (13) is disposed on the lock seat assembly (11) to indicate whether the gangway door lock is in a locked or unlocked state, thereby indicating that the gangway door has been locked or unlocked. The prompting component (13) includes: A micro switch (131) is disposed on the lock base (111); The double-headed swing arm (132) is rotatably mounted on the lock seat (111) and can rotate between the first trigger position and the second trigger position. When the double-headed swing arm (132) is in the first trigger position, the first swing end of the double-headed swing arm (132) presses the contact of the micro switch (131) to close it; when the double-headed swing arm (132) is in the second trigger position, the first swing end of the double-headed swing arm (132) disengages from the contact of the micro switch (131) to open it; and An elastic element (133), disposed on the lock seat (111), is used to give the double-headed swing arm (132) a tendency to rotate toward the first trigger position. During the closing process of the gangway door, the locking pin (112) and the long locking tongue (122a) collide and engage, causing the locking hook (122) to rotate in the locking direction. During this process, the locking pin (112) gradually engages with the locking groove (122c), while the short locking tongue (122b) engages with the second swing end of the double-headed swing arm (132) and drives the double-headed swing arm (132) to gradually rotate from the first trigger position to the second trigger position. As the gangway door gradually opens from the closed state, the locking hook (122) rotates in the unlocking direction under the action of external force. During this process, the locking pin (112) gradually disengages from the locking groove (122c), and at the same time, the short locking tongue (122b) disengages from the second swing end of the double-headed swing arm (132). Under the action of the elastic member (133), the double-headed swing arm (132) gradually rotates from the second trigger position to the first trigger position.

2. The gangway door lock according to claim 1, characterized in that: in, The double-headed swing arm (132) is a rod, the middle part of which forms a rotational support with the lock seat (111). The first swing end of the double-headed swing arm (132) is provided with a trigger part (132a), which is used to press the contact of the micro switch (131). The second swing end of the double-headed swing arm (132) is provided with a drive engagement part (132b), which is used to drive engagement with the short locking tongue (122b).

3. The gangway door lock according to claim 2, characterized in that: in, The short locking tongue (122b) is provided with a driving structure (221) for driving engagement with the driving engagement part (132b), and includes an adjacent guide part (221a) and a driving part (221b). The guide portion (221a) is used to guide the drive mating portion (132b) to drive and engage with the drive portion (221b), and the drive portion (221b) is used to drive and engage with the drive mating portion (132b). When the locking hook (122) rotates in the locking direction, the driving engagement part (132b) first abuts against the guide part (221a), and then abuts against the driving engagement part (132b) under the action of the guide part (221a), thereby driving the double-headed swing arm (132) to rotate from the first trigger position to the second trigger position.

4. The gangway door lock according to claim 3, characterized in that: in, Both the driving part (221b) and the driving mating part (132b) are convex arc surfaces, and the guiding part (221a) is an inclined surface.

5. The gangway door lock according to any one of claims 2-4, characterized in that: in, The elastic element (133) is a compression spring, one end of which abuts against the lock seat (111), and the other end abuts against a side wall in the swing direction of the trigger part (132a). The other sidewall of the trigger part (132a) in the swing direction corresponds to the contact of the micro switch (131). In the unlocked state, the double-headed swing arm (132) is held in the first trigger position by the elastic member (133).

6. The gangway door lock according to any one of claims 3-4, characterized in that: in, The length of the long latch (122a) extending toward the side where the locking pin (112) is located is greater than the length of the short latch (122b) extending toward the side where the locking pin (112) is located. The drive structure (221) is disposed on the side wall of the short latch (122b) facing away from the long latch (122a), and the guide portion (221a) is connected to the extension end of the short latch (122b). During the closing process of the gangway door, the locking pin (112) engages with the side wall of the long latch (122a) facing the short latch (122b) to cause the locking hook (122) to rotate in the locking direction.

7. The gangway door lock according to any one of claims 3-4, characterized in that: in, The lock base (111) has a mounting portion (111a) extending toward the side where the lock hook (122) is located. The locking pin (112) is fixed to the extension end of the mounting part (111a). The double-headed swing arm (132) is rotatably supported on the mounting portion (111a), and the drive engagement portion (132b) extends to the radially outer side of the locking pin (112). A gap is formed between the drive engagement part (132b) and the locking pin (112) for the short locking tongue (122b) to extend into, so that the drive structure (221) and the drive engagement part (132b) drive engagement.

8. The gangway door lock according to any one of claims 1-4, characterized in that: in, The lock box assembly (12) also includes: A first reset member (123) is disposed inside the lock box (121) to give the lock hook (122) a tendency to rotate in the unlocking direction; A stop (124), rotatably disposed within the lock housing (121), is used to block the lock hook (122) from rotating in the unlocking direction; and The second reset member (125) is disposed in the lock box (121) to make the stop member (124) tend to rotate toward the side where the lock hook (122) is located, thereby blocking the lock hook (122) with the stop member (124).

9. The gangway door lock according to claim 8, characterized in that: in, The stop (124) has a first engaging portion (124a) on its circumferential surface, and the lock hook (122) has a second engaging portion (122d) on its circumferential surface. The first engaging part (124a) selectively engages with different positions of the second engaging part (122d), and after engagement, they form a barrier in the direction in which the locking hook (122) rotates along the unlocking direction. The first engaging portion (124a) includes a first tooth (241a), and the second engaging portion (122d) includes three consecutive second teeth (221d). When the first tooth (241a) engages with the second teeth (221d) at both ends, the locking pin (112) engages with or disengages from the locking groove (122c); when the first tooth (241a) engages with the second tooth (221d) in the middle, the locking pin (112) partially engages with the locking groove (122c).

10. A gangway door assembly, characterized in that, include: gangway door; Door frame; as well as gangway door lock (10), The gangway door lock (10) is the gangway door lock as described in any one of claims 1-9.

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