Cabin door

Abstract

This invention relates to a cabin door, belonging to the field of helicopter technology, and includes: a sliding door body; and a locking mechanism, wherein the locking mechanism includes at least a locking system, the locking system including: multiple locks disposed on the sliding door body and corresponding door frames of the sliding door body, the locking pins within the multiple locks being linked to achieve linked locking or unlocking of the multiple locks; and a blocking mechanism disposed within at least one of the locks for blocking and limiting the locking pins within the lock. This invention, after the lock is unlocked, keeps the locking pin in the unlocked position by blocking and limiting it, and removes the blocking and limiting of the locking pin during the sliding closing of the cabin door to achieve the locking action. Therefore, the locking action is achieved without the locking pin impacting other components, effectively reducing the wear and tear and the possibility of locking pin damage, thereby greatly extending the service life of the locking pin.

Description

Technical Field

[0001] This invention relates to a cabin door, belonging to the field of helicopter technology. Background Technology

[0002] Currently, helicopters are mostly equipped with cockpit doors and passenger doors on the sides of their fuselages.

[0003] There is an existing Chinese patent with patent number 201721336288.5, entitled "A Utility Lock and a Cockpit Door Assembly." The utility lock includes a lock base assembly, a lock body assembly, and a warning device. The lock body assembly includes a lock body shell, a bolt, a first elastic element, and a swing arm. A telescopic cavity is provided inside the lock body shell. The bolt is movably connected to the lock body shell through the first elastic element and can extend or retract into the telescopic cavity. The swing arm is mounted on the lock body shell and rotatably connected to it. The swing arm is connected to the first elastic element... Next, the swing arm can compress the first elastic element to drive the bolt to retract into the telescopic cavity. The lock seat assembly includes a lock seat housing and a trigger. The lock seat housing is provided with a receiving cavity, the position of which corresponds to the position of the telescopic cavity. The trigger is movably installed in the receiving cavity and connected to the warning device. When the bolt extends into the receiving cavity and abuts against the trigger, the trigger controls the warning device to issue a warning. Its beneficial effect is that it can intuitively remind the user whether the door is open or closed, providing a good user experience and strong practicality.

[0004] However, it also has the following drawbacks: during the closing process of the hatch, the locking action is achieved by the impact of the bolt in the lock body against the lock seat, which not only aggravates the wear of the bolt, but also easily causes damage to the bolt, resulting in a significant reduction in the service life of the bolt. Summary of the Invention

[0005] The purpose of this invention is to provide a cabin door that achieves locking by removing the blocking limit of the locking pin during the sliding closing process of the cabin door.

[0006] This invention provides a cabin door, characterized by comprising: a sliding door body; and a locking mechanism for locking or unlocking the sliding door body, wherein the locking mechanism includes at least a locking system, the locking system comprising: a plurality of locks disposed on the sliding door body and corresponding door frames of the sliding door body, wherein the locking pins within the plurality of locks are linked to achieve linked locking or unlocking of the plurality of locks; and a blocking mechanism disposed within at least one of the locks for blocking and limiting the locking pins within the locks, wherein the blocking mechanism includes: a locking pin linkage member connected indirectly or directly to the locking pin; and a blocking member for blocking the locking pin linkage member when the locking pin retracts to the unlocking position in the unlocking direction. The member can rotate at least between a first position allowing the locking pin linkage to pass and a second position where the locking pin linkage is blocked after passing; a rotation reset member is used to drive the blocking member to rotate and reset from the first position to the second position after the locking pin linkage passes; and a locking trigger member is used to drive the blocking member to rotate from the second position to the first position during the sliding closing of the sliding door, and to engage with the blocking member when it is in the second position, wherein the blocking member rotates from the second position to the first position when the locking pin linkage retracts along the unlocking direction with the locking pin, and the blocking member rotates and resets from the first position to the second position after the locking pin linkage passes.

[0007] The cabin door provided by the present invention may also have the following features: wherein the blocking member has: a blocking portion formed at a first end of the blocking member for blocking the locking pin linkage member when in the second position; a driving portion formed at a side portion of the blocking member for cooperating with the locking pin linkage member when the locking pin retracts along the unlocking direction to drive the blocking member to rotate from the second position to the first position; and a trigger portion formed at a second end of the blocking member opposite to the first end for impacting the locking trigger member during the sliding closing of the sliding door body to drive the blocking member to rotate from the second position to the first position to remove the blocking, and for abutting against the locking trigger member when the blocking member is in the second position.

[0008] The cabin door provided by the present invention may also have the following features: wherein the rotating reset member is a torsion spring, the first end of which is engaged with the side of the blocking member opposite to the side where the driving part is located, and the second end of which abuts against the surface of the corresponding lock. When the blocking member is in the second position, the rotating reset member is in a pre-compressed and stored state, and the triggering part and the locking triggering member are in an elastic abutment state.

[0009] The cabin door provided by the present invention may also have the following features: each of the locks includes: a lock body component, fixedly disposed on the sliding door body, having a lock body and a locking pin; and a lock seat component, fixedly disposed on the door frame of the sliding door body, having a lock seat and a lock hole for cooperating with the locking pin, wherein the locking pin linkage component is fixedly connected to the locking pin, the blocking component is rotatably disposed on the lock body, and the locking trigger component is fixedly disposed on the lock seat.

[0010] The cabin door provided by the present invention may also have the following features: wherein the lock body component further comprises: a linkage rod, slidably disposed in the lock body, for driving the lock pin to retract along the unlocking direction to pull it out of the lock hole or to extend along the locking direction to insert it into the lock hole; and an elastic member, for driving the lock pin to extend and reset along the locking direction.

[0011] The cabin door provided by this invention may also have the following features: the plurality of locks include: an upper lock, disposed at the top of the sliding door and at the corresponding door frame of the sliding door; and a lower lock, disposed at the bottom of the sliding door and at the corresponding door frame of the sliding door. The locking mechanism further includes: an unlocking component for unlocking the upper lock and the lower lock in conjunction; an inner handle component for driving the unlocking component to unlock the upper lock and the lower lock in conjunction; and an outer handle component for driving the unlocking component to unlock the upper lock and the lower lock in conjunction.

[0012] The cabin door provided by this invention may also have the following features: the unlocking component includes: a swing arm having a first rotation fulcrum, a first swing end, a second swing end, and a third swing end; a driving rod for connecting with the inner handle component and the outer handle component to achieve lateral movement; a driven rod having a first end hinged to the end of the driving rod and a second end hinged to the first swing end of the swing arm, for driving the swing arm to rotate around the first rotation fulcrum in the unlocking direction; a first pull rod having a first end hinged to the second swing end of the swing arm and a second end indirectly or directly connected to the locking pin in the upper lock, for driving the locking pin in the upper lock to retract in the unlocking direction to unlock the upper lock; and a second pull rod having a first end hinged to the third swing end of the swing arm and a second end indirectly or directly connected to the locking pin in the lower lock, for driving the locking pin in the lower lock to retract in the unlocking direction to unlock the lower lock.

[0013] The cabin door provided by the present invention may also have the following features: wherein the inner handle component includes: an inner handle disc; an inner handle hinged within the inner handle disc and having a first rotating end; a second swing arm having a second rotating fulcrum, a fourth swing end, and a fifth swing end; a moving rod having a first end hinged to the fifth swing end of the second swing arm and a second end hinged to the middle of the driving rod; and a lifting rod having a first end movably passing through the inner handle disc and hinged to the first rotating end of the inner handle, and a second end hinged to the fourth swing end of the second swing arm.

[0014] The cabin door provided by the present invention may also have the following features: wherein the inner handle plate is fixedly disposed at the handrail position of the sliding door body, the inner handle is embedded in the groove at the top of the inner handle plate, and the plane in which the rotation direction of the inner handle is located is perpendicular to the plane in which the sliding door body slides open or closes.

[0015] The cabin door provided by the present invention may also have the following features: wherein the outer handle component includes: an outer handle disc; an outer handle, hinged in the outer handle disc, having a second rotating end, the second rotating end of the outer handle movably passing through the outer handle disc and hinged to both ends of the drive rod.

[0016] Therefore, the present invention has the following advantages compared with the prior art:

[0017] According to the cabin door of the present invention, the cabin door includes a sliding door body and a locking mechanism. The locking mechanism includes an unlocking component, an inner handle component, an outer handle component, and a locking system. The locking system includes multiple locks and a blocking mechanism. The blocking mechanism includes a locking pin linkage component, a blocking component, a rotation reset component, and a locking trigger component. When the locking pin linkage component retracts along the unlocking direction with the locking pin, the blocking component rotates from the second position to the first position. After the locking pin linkage component retracts along the unlocking direction, the blocking component rotates back from the first position to the second position under the action of the rotation reset component, thereby allowing passage through the blocking component. This system effectively blocks and limits the movement of the locking pin linkage after it has passed through, keeping it in the blocked position and thus keeping the locking pin in the unlocked position within the lower lock. During the sliding door's closing process, the blocking member rotates from the second position to the first position under the drive of the locking trigger, releasing the blocking and limiting effect on the locking pin linkage. At this time, the corresponding locking pin in the lock automatically extends and resets in the locking direction due to the lock's own reset action. Because the locking pins in multiple locks are linked, the locking pins in other locks also automatically extend and reset in the locking direction, thus achieving a linked locking action across multiple locks. After the lock is unlocked, the locking pin is kept in the unlocked position by blocking and limiting it; the locking action is achieved by releasing the blocking and limiting effect on the locking pin during the sliding door's closing process. Therefore, the locking action is achieved without the locking pin colliding with other components, effectively reducing wear and tear on the locking pin and the possibility of damage, thereby significantly extending the lifespan of the locking pin. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the cabin door according to an embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the lower lock in the first direction in an embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the lower lock in the second direction in an embodiment of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the blocking component in an embodiment of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the lock base in an embodiment of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the upper lock in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the locking pin unlocking stroke in an embodiment of the present invention;

[0025] Figure 8This is a three-dimensional structural diagram of the locking mechanism in the first direction in an embodiment of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the locking mechanism in the second direction in an embodiment of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the locking mechanism in a third direction in an embodiment of the present invention;

[0028] Figure 11 This is a three-dimensional structural diagram of the locking mechanism in the fourth direction in an embodiment of the present invention;

[0029] Figure 12 This is a front view structural schematic diagram of the swing arm component in an embodiment of the present invention.

[0030] The markings in the attached drawings are described as follows: Cabin door 100; Sliding door body 100a; Locking mechanism 100b; Upper lock 1; Lower lock 2; Lock body component 21; Lock body 211; Movement limit groove 211a; Rotation limit groove 211b; Lock pin 212; Linkage rod 213; Elastic element 214; Lock seat component 22; Lock seat 221; Lock hole 222; Blocking mechanism 23; Lock pin linkage component 231; Blocking component 232; Blocking part 232a; Drive part 232b; Trigger part 232c; Rotation reset component 233; Locking trigger component 234; Trigger plane 234a; Fixed shaft 235; Unlocking component 3; Swing arm component 31 First rotation fulcrum 311; First swing end 312; Second swing end 313; Third swing end 314; Driving rod 32; Driven rod 33; First main body 331; First connecting part 332; First pull rod 34; Second pull rod 35; Inner handle component 4; Inner handle disc 41; Inner handle 42; First rotation end 421; Swing arm component 43; Second rotation fulcrum 431; Fourth swing end 432; Fifth swing end 433; Moving rod 44; Second main body 441; Second connecting part 442; Lifting rod 45; Outer handle component 5; Outer handle disc 51; Outer handle 52; Second rotation end 521. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the cabin door of the present invention will be specifically described below in conjunction with embodiments and accompanying drawings.

[0032] This embodiment provides a cabin door that achieves locking by removing the blocking limit of the locking pin during the closing process of the passenger cabin door sliding door.

[0033] Figure 1 This is a three-dimensional structural diagram of the cabin door according to an embodiment of the present invention.

[0034] like Figure 1As shown, the cabin door 100 of this embodiment includes a sliding door body 100a, a door frame of the sliding door body 100a (not shown in the figure), and a locking mechanism 100b. The sliding door body 100a is a conventional sliding door that opens or closes by sliding. During the sliding process, in addition to displacement along the sliding direction, the sliding door body 100a also undergoes a certain displacement relative to the perpendicular direction of the sliding direction, so that the sliding door body 100a is located outside the door frame when open, and flush with the door frame when closed. The locking mechanism is disposed on the sliding door body 100a and its door frame, and is used to lock or unlock the sliding door body 100a.

[0035] like Figure 1 As shown, the locking mechanism 100b of this embodiment includes an unlocking component 3, an inner handle component 4, an outer handle component 5, and a locking system 6. The locking system 6 is used to lock the sliding door body 100a of the cabin door to the door frame of the sliding door body, and includes an upper lock 1, a lower lock 2, and a blocking mechanism 23. The upper lock 1 is located at the top of the sliding door body 100a and at the corresponding door frame of the sliding door body. The lower lock 2 is located at the bottom of the sliding door body 100a and at the corresponding door frame of the sliding door body. The unlocking component 3 is used to unlock the upper lock 1 and the lower lock 2 in conjunction. The inner handle component 4 is used to drive the unlocking component 3 to unlock the upper lock 1 and the lower lock 2 in conjunction. The outer handle component 5 is used to drive the unlocking component 3 to unlock the upper lock 1 and the lower lock 2 in conjunction. This allows the operator to open and close the cabin door from the inside and outside of the helicopter respectively by operating the inner handle component 4 or the outer handle component 5.

[0036] In this embodiment, both the upper lock 1 and the lower lock 2 are located at the far end of the hinge joint between the cabin door and the cabin door frame. Furthermore, the upper lock 1 is also located at the corner of the top of the cabin door, which is the position where the cabin door has the highest strength, thus better ensuring the stability of the cabin door's locking mechanism. In this embodiment, both the upper lock 1 and the lower lock 2 have an automatic reset function, meaning that the locks can automatically reset from the unlocked state to the locked state after the external force is removed.

[0037] Figure 2 This is a three-dimensional structural diagram of the lower lock in the first direction in an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the lower lock in the second direction in an embodiment of the present invention.

[0038] like Figure 2 and Figure 3As shown, the blocking mechanism 23 is used to block and limit the locking pin 212 inside the corresponding lock. The locking pin 212 in the upper lock 1 and the locking pin 212 in the lower lock 2 are linked, thereby realizing the linkage locking or unlocking of the upper lock 1 and the lower lock 2. In this embodiment, the blocking mechanism 23 is located inside the lower lock 2. In other alternative embodiments, the blocking mechanism 23 can also be located inside the upper lock 1. It can be understood that the upper lock 1 and the lower lock 2 constitute the upper and lower locking points of the cabin door. When the blocking mechanism 23 removes or establishes the blocking and limiting of the locking pin 212 inside the lower lock 2, the locking pin 212 in the upper lock 1 and the locking pin 212 in the lower lock 2 are linked, thereby realizing the linkage locking or unlocking of the upper lock 1 and the lower lock 2.

[0039] like Figure 2 and Figure 3 As shown, the blocking mechanism 23 includes a locking pin linkage 231, a blocking member 232, a rotation reset member 233, and a locking trigger member 234. The locking pin linkage 231 is connected to the locking pin 212 indirectly or directly. The blocking member 232 is used to block the locking pin linkage 231 when the locking pin 212 retracts to the unlocked position in the unlocking direction. The blocking member 232 can rotate at least between a first position that allows the locking pin linkage 231 to pass and a second position where the locking pin linkage 231 is blocked after passing. The rotation reset member 233 is used to drive the blocking member 232 to rotate and reset from the first position to the second position after the locking pin linkage 231 has passed. The locking trigger member 234 is used to drive the blocking member 232 to rotate from the second position to the first position to remove the blocking during the sliding closing of the sliding door 100a, and to engage with the blocking member 232 when it is in the second position.

[0040] When the locking pin linkage 231 moves along the unlocking direction with the locking pin 212 ( Figure 2When the locking pin linkage 231 retracts (in the direction indicated by arrow B), the blocking member 232 rotates from the second position to the first position. After the locking pin linkage 231 retracts and passes through in the unlocking direction, the blocking member 232 rotates and resets from the first position to the second position under the action of the rotation reset member 233. Thus, the blocking member 232 can block and limit the passing locking pin linkage 231, thereby keeping the locking pin linkage 231 in the blocked position, and thus keeping the locking pin 212 in the lower lock 2 in the unlocked position; in the sliding door During the sliding closing process of the sliding door 100a, driven by the locking trigger 234, the blocking member 232 rotates from the second position to the first position to remove the blocking limit on the locking pin linkage member 231. At this time, the locking pin 212 in the lower lock 2 automatically extends and resets along the locking direction due to the lock's own reset action. Since the locking pins 212 in the upper lock 1 and the lower lock 2 are linked, the locking pin 212 in the upper lock 1 also automatically extends and resets along the locking direction, thereby realizing the linked locking action of the upper lock 1 and the lower lock 2. After the lock is unlocked, the locking pin is kept in the unlocked position by blocking and limiting it. During the sliding closing process of the sliding door 100a, the blocking and limiting of the locking pin is removed to realize the locking action. Therefore, the locking action is achieved without the locking pin colliding with other parts, which can effectively reduce the wear and tear of the locking pin and the possibility of damage to the locking pin, thereby greatly improving the service life of the locking pin.

[0041] like Figure 2 As shown, in this embodiment, the locking pin linkage 231 is rod-shaped and fixedly connected to the locking pin 212 inside the lower lock 2. Specifically, the locking pin linkage 231 passes through the locking pin 212 along a direction perpendicular to the axis of the locking pin. A limiting portion is formed on the surface of the locking pin linkage 231 that abuts against one side surface of the locking pin 212. A limiting sleeve that abuts against the opposite side surface of the locking pin 212 is detachably fixed to the locking pin linkage 231. The detachable method can be a threaded connection or a connection through a locking member.

[0042] Figure 4 This is a three-dimensional structural diagram of the blocking component in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the lock base in an embodiment of the present invention.

[0043] like Figure 4 and Figure 5As shown, the blocking member 232 has a blocking portion 232a, a driving portion 232b, and a trigger portion 232c. The blocking portion 232a is formed at the first end of the blocking member 232 and is used to block the locking pin linkage 231 when in the second position. The driving portion 232b is formed at the side of the blocking member 232 and is used to cooperate with the locking pin linkage 231 when the locking pin retracts along the unlocking direction, thereby driving the blocking member 232 to rotate from the second position to the first position. The trigger portion 232c is formed at the second end of the blocking member 232 opposite to the first end and is used to impact and cooperate with the locking trigger 234 during the sliding closing of the sliding door 100a, thereby driving the blocking member 232 to rotate from the second position to the first position to remove the blocking action, and is also used to abut against the locking trigger 234 when the blocking member 232 is in the second position. The blocking portion 232a can block the locking pin linkage 231, keeping the locking pin in the unlocked position. The drive unit 232b can drive the blocking member 232 to rotate from the second position to the first position when the locking pin linkage member 231 retracts along the unlocking direction with the locking pin, so that the locking pin linkage member 231 can smoothly retract along the unlocking direction with the locking pin, thereby allowing the locking pin to retract to the unlocked position along the unlocking direction. During the process of sliding the sliding door 100a from the open state to the closed state, the sliding door 100a will undergo a certain displacement in the direction perpendicular to its sliding direction, so that when closed, the outer surface of the sliding door 100a is flush with the outer surface of the door frame of the sliding door. Therefore, during the sliding closing process of the sliding door 100a, the trigger part 232c can collide with the locking trigger 234, thereby driving the blocking part 232 to rotate from the second position to the first position. This allows the locking pin in the lower lock 2 to automatically extend and reset along the locking direction due to the lock's own reset action, thus achieving the locking action. Moreover, the locking action is achieved by impacting non-locking pin components, which will not affect the locking pin. In addition, the blocking part 232 is driven to rotate by impact. Compared with the prior art, which achieves sliding by impacting on an inclined plane, this reduces the wear on components during the impact process.

[0044] In this embodiment, the first position of the blocking member 232 is an instantaneous position. That is, when the blocking member 232 rotates from the second position to the first position, the external force is removed once the first position is reached, and the blocking member 232 immediately rotates back to the second position under the action of the rotation reset member 233. The second position of the blocking member 232 has two positions, upper and lower. When the cabin door is locked, the blocking member 232 is in the lower position of the second position. At this time, the cylindrical surface of the locking pin linkage member 231 abuts against the vertical surface of the side of the blocking member 232 located below the drive part 232b. When the cabin door is unlocked, the blocking member 232 is in the upper position of the second position. At this time, the cylindrical surface of the locking pin linkage member 231 abuts against the blocking part 232a of the blocking member 232.

[0045] Figure 6 This is a three-dimensional structural diagram of the upper lock in an embodiment of the present invention.

[0046] like Figure 2 and Figure 6 As shown, both the upper lock 1 and the lower lock 2 include a lock body component 21 and a lock seat component 22. The lock body component 21 is fixedly mounted on the sliding door body 100a, and the lock seat component 22 is fixedly mounted on the corresponding door frame of the sliding door body. The locking connection between the sliding door body 100a and the door frame of the sliding door body is achieved through the cooperation between the lock body component 21 and the lock seat component 22, thereby realizing the locking of the cabin door.

[0047] like Figure 2 and Figure 3 As shown, the lock body component 21 and the lock seat component 22 are arranged opposite to each other. The lock body component 21 has a lock body 211 and a locking pin 212, and the lock seat component 22 has a lock seat 221 and a lock hole 222 for engaging with the locking pin 212. The lock body 211 is fixed to the cabin door, and the locking pin 212 is slidably disposed within the lock body 211. The sliding direction of the locking pin 212 is the axial direction of the locking pin 212, which includes both the unlocking and locking directions. Figure 2 As shown, direction B indicates the unlocking direction, and the opposite direction of B indicates the locking direction. The locking end of the locking pin 212 extends from the side near the lock seat 221 to the outside of the lock body 211 so as to lock into the lock hole 222. In this embodiment, the surface of the locking end of the locking pin 212 is a circumferential curved surface.

[0048] In this embodiment, the lock seat 221 is fixed to the cabin door frame, and the lock hole 222 is located on the lock seat 221 and extends through both ends of the lock seat 221. In this embodiment, the axis of the locking pin 212 coincides with the center line of the lock hole 222, and the cross-sectional dimension of the lock hole 222 is larger than the diameter of the locking pin 212. In this embodiment, the cabin door adopts a hinge-driven opening method, and the locking pin 212 cooperates with the door to form a latch locking point structure, thereby restricting the degree of freedom of the cabin door's rotation.

[0049] like Figure 3As shown, the lock body component 21 also includes a linkage rod 213 and an elastic element 214. The linkage rod 213 is slidably disposed within the lock body 211, and is used to drive the locking pin 212 to retract in the unlocking direction so that it is pulled out of the lock hole 222 or to extend in the locking direction so that it is inserted into the lock hole 222, so as to realize the unlocking and locking actions. In this embodiment, the axis of the linkage rod 213 coincides with the axis of the locking pin 212, and the end of the linkage rod 213 extends into the locking pin 212 and is fixedly connected to it. The elastic element 214 is used to drive the locking pin 212 to extend and reset in the locking direction so that the locking pin 212 can automatically reset from the unlocked position to the locked position after the external force is removed. In this embodiment, the elastic element 214 is a spring. The elastic element 214 is sleeved on the moving rod 44, with one end abutting against the lock body 211 and the other end indirectly abutting against the locking pin 212.

[0050] In this embodiment, the lock body 211 has a stepped surface for limiting the locking pin 212 to prevent the locking pin 212 from sliding out of the lock body 211 under the action of the elastic member 214.

[0051] In this embodiment, the locking pin 212, the lock body 211, and the lock base 221 are made of 05Cr17Ni4Cu4Nb.

[0052] Figure 7 This is a schematic diagram of the locking pin unlocking stroke in an embodiment of the present invention.

[0053] like Figure 7 As shown, to ensure the safety of the cabin door, the locking pin 212 needs to extend a certain distance, and the locking end of the locking pin 212 must completely pass through the outer surface of the lock seat 221, which is relatively far from the lock body 211. In this embodiment, the height of the locking pin 212 protruding from the lock body 211 and relatively close to the inner surface of the lock seat 221 in this state is D1, and the value of D1 is 23mm. Therefore, the unlocking stroke of the lock is 23mm.

[0054] like Figure 2 As shown, the blocking member 232 is rotatably mounted on the lock body 211 and located radially outside the locking pin 212. In this embodiment, the blocking member 232 is a swing arm structure. Specifically, the middle part of the blocking member 232 is rotatably connected to the lock body 211 via a fixed shaft 235. The fixed shaft 235 is fixedly mounted on the lock body 211, and the blocking member 232 is rotatably sleeved on the fixed shaft 235, thereby allowing the blocking member 232 to rotate around the fixed shaft 235, so that it can rotate between a first position and a second position.

[0055] In this embodiment, the lock body 211 has a movable limiting groove 211a through which the locking pin linkage 231 slides. The movable limiting groove 211a extends through both ends of the lock body 211 and parallel to the axial direction of the locking pin 212. The two side walls of the movable limiting groove 211a located in the moving direction of the locking pin linkage 231 can abut against the cylindrical surface of the locking pin linkage 231, thereby limiting the rotation distance of the locking pin linkage 231. When the cylindrical surface of the locking pin linkage 231 abuts against one side wall of the movable limiting groove 211a, the locking pin 212 is in the locked position; when the cylindrical surface of the locking pin linkage 231 abuts against the other side wall of the movable limiting groove 211a, the locking pin 212 is in the unlocked position.

[0056] like Figures 3 to 5 As shown, in this embodiment, a blocking portion 232a is formed at the upper end of the blocking member 232, a trigger portion 232c is formed at the lower end of the blocking member 232, and a driving portion 232b is formed on the side of the upper half of the blocking member 232. Specifically, the upper end surface of the blocking portion 232a constitutes the blocking portion 232a, and the blocking portion 232a is a plane. When the blocking member 232 is in the second position, the blocking portion 232a is a horizontal plane. The upper end surface of the blocking portion 232a constitutes the trigger portion 232c, and the trigger portion 232c is an arc surface. The side surface of the blocking member 232 constitutes the driving portion 232b, and the driving portion 232b is an inclined surface. One end of the locking pin linkage member 231 extends horizontally to one side of the blocking member 232, and the cylindrical surface of the locking pin linkage member 231 abuts against the vertical surface of the side of the blocking member 232 located below the driving portion 232b. The upper end of the driving portion 232b is inclined toward the side of the locking pin 212. The trigger part 232c moves through the lock body 211 and extends to one side of the lock seat 221. When the sliding door 100a slides closed, the trigger part 232c abuts against the locking trigger 234. The lock body 211 has a rotation limiting groove 211b through which the trigger part 232c moves. The two side walls of the rotation limiting groove 211b located in the rotation direction of the blocking member 232 can abut against the side of the blocking member 232, thereby limiting the rotation angle of the blocking member 232.

[0057] In this embodiment, the locking trigger 234 is fixedly disposed on the side of the lock seat 221 near the lock body 211, and the locking trigger 234 has a trigger plane 234a that abuts against the trigger part 232c.

[0058] like Figure 2 and Figure 3As shown, the rotation reset member 233 is a torsion spring, sleeved on the fixed shaft 235. Its first end is engaged with the side of the blocking member 232 opposite to the side where the driving part 232b is located, and its second end abuts against the surface of the lock. Specifically, the second end abuts against the surface of the lock body 211. This ensures that the blocking member 232 always has a tendency to rotate towards the second position, thus achieving rotation reset of the blocking member 232 from the first position to the second position.

[0059] When the blocking member 232 is in the second position, the rotation reset member 233 is in a pre-compressed and stored state, and the trigger part 232c and the locking trigger member 234 are in an elastic abutment state. After the cabin door is opened, the trigger part 232c on the blocking member 232 disengages from the locking trigger member 234. Therefore, under the action of the rotation reset member 233, the blocking member 232 can continue to rotate a certain angle towards the side closer to the locking trigger member 234, so that the trigger part 232c is closer to the locking trigger member 234 relative to the abutment position. This ensures that during the sliding closing process of the sliding door 100a, the locking trigger member 234 can strike the trigger part 232c to make the blocking member 232 rotate from the second position to the first position to remove the blocking, thereby ensuring that the locking action can be achieved during the sliding closing process of the sliding door 100a.

[0060] like Figure 2 and Figure 6 As shown, in this embodiment, the difference between the upper lock 1 and the lower lock 2 is that the upper lock 1 does not have a blocking mechanism 23. The other structures are the same, so they will not be described in detail here.

[0061] Figure 8 This is a three-dimensional structural diagram of the locking mechanism in the first direction in an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the locking mechanism in the second direction in an embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the locking mechanism in a third direction in an embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the locking mechanism in the fourth direction in an embodiment of the present invention.

[0062] like Figures 8 to 11 As shown, the unlocking component 3 includes a swing arm 31, a drive rod 32, a driven rod 33, a first pull rod 34, and a second pull rod 35. The swing arm 31 is rotatably mounted on the outer handle component 5, and has a first rotation fulcrum 311, a first swing end 312, a second swing end 313, and a third swing end 314. The drive rod 32 is used to connect with the inner handle component 4 and the outer handle component 5 to achieve lateral movement. The first end of the driven rod 33 is hinged to the end of the drive rod 32, and the second end is hinged to the first swing end 312 of the swing arm 31, which drives the swing arm 31 to rotate about the first rotation fulcrum 311 in the unlocking direction. Figure 10As shown, direction A indicates the unlocking direction. The first end of the first pull rod 34 is hinged to the second swing end 313 of the swing arm 31, and the second end is indirectly or directly connected to the locking pin 212 inside the upper lock 1. It is used to drive the locking pin 212 inside the upper lock 1 to retract in the unlocking direction to unlock the upper lock 1. The first end of the second pull rod 35 is hinged to the third swing end 314 of the swing arm 31, and the second end is indirectly or directly connected to the locking pin 212 inside the lower lock 2. It is used to drive the locking pin 212 inside the lower lock 2 to retract in the unlocking direction to unlock the lower lock 2. This allows the inner handle component 4 or the outer handle component 5 to drive the drive rod 32 to move laterally and act on the first swing end 312 of the swing arm component 31 through the driven rod 33, thereby driving the swing arm component 31 to rotate around the first rotation fulcrum 311 in the unlocking direction. When the swing arm component 31 rotates around the first rotation fulcrum 311 in the unlocking direction, it can not only drive the first pull rod 34 to move through the second swing end 313, thereby driving the locking pin 212 in the upper lock 1 to retract in the unlocking direction to unlock the upper lock 1, but also drive the second pull rod 35 to move through the third swing end 314, thereby driving the locking pin 212 in the lower lock 2 to retract in the unlocking direction to unlock the lower lock 2, thus realizing the linkage unlocking of the upper lock 1 and the lower lock 2.

[0063] In this embodiment, the second end of the first pull rod 34 is fixedly connected to the linkage rod 213 in the upper lock 1, and the second end of the second pull rod 35 is fixedly connected to the linkage rod 213 in the lower lock 2. Specifically, the second end of the second pull rod 35 is hinged to the end of the linkage rod 213 to ensure that the locking pin 212 can move along its own axis when the swing arm 31 rotates.

[0064] In this embodiment, the first tie rod 34 is a rigid member, and the second tie rod 35 is a flexible member. In other alternative embodiments, both the first tie rod 34 and the second tie rod 35 can be rigid members or both can be flexible members.

[0065] like Figure 8 and Figure 10 As shown, the driven rod 33 includes a first main body 331 and two first connecting parts 332 located at both ends of the first main body 331. Both first connecting parts 332 are hinged to both ends of the first main body 331. The first end of the first main body 331 is hinged to the end of the driving rod 32 via one of the first connecting parts 332, and the second end of the first main body 331 is hinged to the first swing end 312 of the swing arm 31 via the other first connecting part 332. Since the trajectory of the driving rod 32's lateral movement is an arc, the driven rod 33 is configured as a three-segment structure, with each segment connected by hinges. This allows the first main body 331 and the first connecting parts 332 to misalign when the driving rod 32 moves laterally, thereby ensuring smoothness and stability during motion transmission.

[0066] like Figure 8 , Figure 10 and Figure 11 As shown, the inner handle component 4 includes an inner handle disc 41, an inner handle 42, a second swing arm 43, a moving rod 44, and a lifting rod 45. The inner handle disc 41 is fixedly installed on the inside of the cabin door. The inner handle 42 is hinged inside the inner handle disc 41 and has a first rotating end 421. The second swing arm 43 has a second rotating fulcrum 431, a fourth swing end 432, and a fifth swing end 433. The first end of the moving rod 44 is hinged to the fifth swing end 433 of the second swing arm 43, and the second end is hinged to the middle of the drive rod 32. The first end of the lifting rod 45 moves through the inner handle disc 41 and is hinged to the first rotating end 421 of the inner handle 42, and the second end is hinged to the fourth swing end 432 of the second swing arm 43. When the operator pulls the inner handle 42 outward, the inner handle 42 can rotate around the hinge point and drive the lifting rod 45 to move upward through the first rotating end 421, thereby acting on the fourth swing end 432 of the second swing arm 43 and driving the second swing arm 43 to rotate around the second rotating fulcrum 431. When the second swing arm 43 rotates around the second rotating fulcrum 431, it can drive the moving rod 44 to move laterally through the fifth swing end 433, thereby driving the driving rod 32 to move laterally away from the first swing arm 31, thereby driving the unlocking component 3 to unlock the upper lock 1 and the lower lock 2 in conjunction, and thus opening the cabin door from the inside.

[0067] In this embodiment, the second swing arm 43 is rotatably mounted on the outer handle plate 51, and the moving rod 44 is slidably supported on the outer handle plate 51. The inner handle component 4 also includes a return spring for the moving rod 44 to move and reset. The return spring is sleeved on the moving rod, with one end abutting against the outer handle plate 51 and the other end abutting against the surface of the moving rod 44.

[0068] like Figure 8 and Figure 10 As shown, the movable rod 44 includes a second main body 441 and a second connecting part 442. The second main body 441 and the second connecting part 442 are connected by a hinge. One end of the second main body 441 is hinged to the fifth swing end 433 of the swing arm 43 via the second connecting part 442, and the other end of the second main body 441 is hinged to the middle part of the driving rod 32. Since the trajectory of the lateral movement of the driving rod 32 is an arc, the movable rod 44 is set as a two-section structure, and the two sections are connected by a hinge. This allows the second main body 441 and the second connecting part 442 to be misaligned when the driving rod 32 moves laterally, thereby ensuring the smoothness and stability of the motion transmission process.

[0069] like Figure 1 and Figure 9As shown, the inner handle plate 41 is fixedly installed at the handrail position of the sliding door body 100a, and the inner handle 42 is embedded in the groove at the top of the inner handle plate 41. The plane in which the inner handle 42 rotates is perpendicular to the plane in which the sliding door body 100a slides open or closes. By arranging the inner handle 42 at the handrail position of the sliding door body 100a, the door is opened by pulling upwards, which makes it convenient for the driver to open the sliding door body 100a and then push it open, thereby realizing the function of opening the cabin door. At the same time, the inner handle 42, which is arranged at the handrail position, has a good concealment effect, which can avoid the possibility of the cabin door being accidentally opened due to people, clothing, etc. being scratched.

[0070] like Figure 8 and Figure 9 As shown, the outer handle component 5 includes an outer handle disc 51 and an outer handle 52. The outer handle disc 51 is fixed to the outside of the cabin door. The outer handle 52 is hinged inside the outer handle disc 51 and has a second rotating end 521. The second rotating end 521 of the outer handle 52 moves through the outer handle disc 51 and is hinged to both ends of the drive rod 32. When the operator pulls the outer handle 52 outward, the outer handle 52 can rotate around the hinge point and drive the drive rod 32 to move laterally away from the swing arm 31 through the second rotating end 521, thereby driving the unlocking component 3 to unlock the upper lock 1 and the lower lock 2, thus enabling the cabin door to be opened from the outside.

[0071] Figure 12 This is a front view structural schematic diagram of the swing arm component in an embodiment of the present invention.

[0072] In this embodiment, according to ergonomic design requirements, the external handle 52 should be operated at an angle of 20° to open the cabin door. For example... Figure 12 As shown, to ensure that the opening angle of the outer handle 52 matches the opening stroke of the locking pin 212, the distances between the second swing end 313 and the third swing end 314 of the first swing arm 31 and the first rotation fulcrum 311 are equal, both being D2, with a value of 44mm. This ensures that the movement stroke of the inner locking pin 212 of the upper lock 1 and the lower lock 2 remains consistent. Furthermore, the distance between the first swing end 312 of the first swing arm 31 and the first rotation fulcrum 311 is D3, with a value of 25mm. Through a leverage ratio of 44:25, the unlocking stroke of the lock is reduced to 13mm. This 13mm movement stroke is transmitted to the outer handle 52 and the inner handle 42 through the conversion of the first swing arm 31. Specifically, the outer handle 52 achieves a 20° opening angle through a conversion, and the inner handle 42 achieves a 33° opening angle through the conversion of the second swing arm 43.

[0073] In this embodiment, the inner handle plate 41, inner handle 42, outer handle plate 51, outer handle 52, swing arm component 1 31, and swing arm component 2 43 are all made of 7075-T7351 aluminum alloy.

[0074] The role and effect of the embodiments

[0075] According to the cabin door involved in this embodiment, the cabin door includes a sliding door body, a door frame of the sliding door body, and a locking mechanism. The locking mechanism includes an unlocking component, an inner handle component, an outer handle component, and a locking system. The locking system includes an upper lock, a lower lock, and a blocking mechanism. The blocking mechanism includes a locking pin linkage component, a blocking component, a rotation reset component, and a locking trigger component. When the locking pin linkage component retracts along the unlocking direction with the locking pin, the blocking component rotates from the second position to the first position. After the locking pin linkage component retracts along the unlocking direction, the blocking component rotates back from the first position to the second position under the action of the rotation reset component, thereby enabling the blocking mechanism to pass through. The stopper limits the movement of the locking pin linkage after it passes through, keeping it in the blocked position and thus keeping the locking pin in the unlocked position. During the sliding closing of the sliding door 100a, the stopper rotates from the second position to the first position under the drive of the locking trigger to remove the blocking limit on the locking pin linkage. At this time, the locking pin in the lower lock automatically extends and resets in the locking direction due to the lock's own reset action. Because the locking pins in the upper and lower locks are linked, the locking pin in the upper lock also automatically extends and resets in the locking direction, thus achieving a linked locking action between the upper and lower locks. After the lock is unlocked, the locking pin is kept in the unlocked position by blocking it, and the locking action is achieved by removing the blocking limit during the sliding closing of the sliding door 100a. Therefore, the locking action is achieved without the locking pin colliding with other components, effectively reducing wear and damage to the locking pin and greatly extending its service life.

Claims

1. A cabin door, characterized in that, include: Sliding door (100a); as well as A locking mechanism (100b) is used to lock or unlock the sliding door (100a). The locking mechanism (100b) includes a locking system (6), which includes: Multiple locks are installed on the sliding door body (100a) and at the corresponding door frame of the sliding door body (100a). The locking pins within the multiple locks are linked to achieve the coordinated locking or unlocking of the multiple locks; and A blocking mechanism (23) is provided in at least one of the locks for blocking and limiting the locking pin within the lock. The blocking mechanism (23) includes: The locking pin linkage (231) is connected to the locking pin (212) indirectly or directly; A blocking member (232) is used to block the locking pin linkage member (231) when the locking pin (212) retracts to the unlocking position in the unlocking direction. The blocking member (232) can rotate between a first position that allows the locking pin linkage member (231) to pass and a second position that allows the locking pin linkage member (231) to pass but is blocked. A rotation reset member (233) is used to reset the blocking member (232) from the first position to the second position by means of a rearward drive in the locking pin linkage member (231); and A locking trigger (234) is used to drive the blocking member (232) to rotate from the second position to the first position during the sliding closing of the sliding door (100a), and to engage with the blocking member (232) when it is in the second position. When the locking pin linkage (231) retracts along the unlocking direction with the locking pin (212), the blocking member (232) rotates from the second position to the first position. After the locking pin linkage (231) passes, the blocking member (232) rotates from the first position to the second position to reset.

2. The cabin door according to claim 1, characterized in that: in, The blocking member (232) has: A blocking part (232a) is formed at the first end of the blocking member (232) for blocking the locking pin linkage member (231) in the second position; A driving part (232b), formed on the side of the blocking member (232), is used to cooperate with the locking pin linkage (231) when the locking pin linkage (231) retracts along the unlocking direction with the locking pin (212) to drive the blocking member (232) to rotate from the second position to the first position; and A trigger part (232c) is formed at the second end of the blocking member (232) opposite to the first end. It is used to engage with the locking trigger (234) during the sliding closing of the sliding door body (100a) to drive the blocking member (232) to rotate from the second position to the first position to remove the blocking, and to engage with the locking trigger (234) when the blocking member (232) is in the second position.

3. The cabin door according to claim 2, characterized in that: in, The rotation reset member (233) is a torsion spring, the first end of which is engaged with the side of the blocking member (232) opposite to the side where the driving part (232b) is located, and the second end of which abuts against the surface of the corresponding lock. When the blocking member (232) is in the second position, the rotating reset member (233) is in a pre-compressed and stored state, and the trigger part (232c) and the locking trigger member (234) are in an elastic abutment state.

4. The cabin door according to any one of claims 1-3, Its features are: in, Each of the aforementioned locks includes: A lock body component (21), fixedly mounted on the sliding door body (100a), has a lock body (211) and a locking pin (212); and The lock seat component (22) is fixedly mounted on the door frame of the sliding door body (100a), and has a lock seat (221) and a lock hole (222) for engaging with the lock pin (212). The locking pin linkage (231) is fixedly connected to the locking pin (212). The blocking member (232) is rotatably mounted on the lock body (211). The locking trigger (234) is fixedly mounted on the lock seat (221).

5. The cabin door according to claim 4, characterized in that: in, The lock body component (21) also has: A linkage rod (213) is slidably disposed within the lock body (211) for driving the locking pin (212) to retract in the unlocking direction to pull it out of the lock hole (222) or to extend in the locking direction to insert it into the lock hole (222); and The elastic element (214) is used to drive the locking pin (212) to extend and reset along the locking direction.

6. The cabin door according to any one of claims 1-3, Its features are: in, The plurality of said locks include: Upper lock (1) is provided at the top of the sliding door body (100a) and at the corresponding door frame of the sliding door body (100a); and The lower lock (2) is provided at the bottom of the sliding door body (100a) and at the corresponding door frame of the sliding door body (100a). The locking mechanism (100b) further includes: Unlocking component (3) is used to unlock the upper lock (1) and the lower lock (2) in a coordinated manner; The inner handle component (4) is used to drive the unlocking component (3) to unlock the upper lock (1) and the lower lock (2); and The outer handle component (5) is used to drive the unlocking component (3) to unlock the upper lock (1) and the lower lock (2) in conjunction.

7. The cabin door according to claim 6, Its features are: The unlocking component (3) includes: The first swing arm (31) has a first rotation fulcrum (311), a first swing end (312), a second swing end (313) and a third swing end (314); A drive lever (32) is used to connect with the inner handle component (4) and the outer handle component (5) to enable lateral movement; The driven rod (33) has its first end hinged to the end of the driving rod (32) and its second end hinged to the first swing end (312) of the swing arm (31), for driving the swing arm (31) to rotate around the first rotation fulcrum (311) in the unlocking direction. A first pull rod (34), the first end of which is hinged to the second swing end (313) of the first swing arm (31), and the second end of which is indirectly or directly connected to the locking pin (212) in the upper lock (1), for driving the locking pin (212) in the upper lock (1) to retract along the unlocking direction to unlock the upper lock (1); and The second pull rod (35) has its first end hinged to the third swing end (314) of the first swing arm (31), and its second end indirectly or directly connected to the locking pin (212) in the lower lock (2), for driving the locking pin (212) in the lower lock (2) to retract along the unlocking direction to unlock the lower lock (2).

8. The cabin door according to claim 7, Its features are: in, The inner handle component (4) includes: Inner handle plate (41); The inner handle (42) is hinged inside the inner handle plate (41) and has a first rotating end (421); The second swing arm (43) has a second rotation fulcrum (431), a fourth swing end (432) and a fifth swing end (433); The movable rod (44) has its first end hinged to the fifth swing end (433) of the second swing arm (43), and its second end hinged to the middle of the drive rod (32); and The lifting rod (45) has its first end movably passing through the inner handle plate (41) and hinged to the first rotating end (421) of the inner handle (42), and its second end is hinged to the fourth swing end (432) of the second swing arm (43).

9. The cabin door according to claim 8, characterized in that: in, The inner handle plate (41) is fixedly installed at the handrail position of the sliding door body (100a). The inner handle (42) is embedded in the groove at the top of the inner handle plate (41). The plane in which the inner handle (42) rotates is perpendicular to the plane in which the sliding door body (100a) slides open or closes.

10. The cabin door according to claim 7, characterized in that: in, The external handle component (5) includes: External handle plate (51); An outer handle (52), hinged within the outer handle disc (51), has a second rotating end (521). The second rotating end (521) of the outer handle (52) moves through the outer handle disc (51) and is hinged to the drive rod (32).

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