Closed position lock for left-right oppositely-opened cabin door

Abstract

The invention belongs to the field of left-right opposite-opening cabin door closing position locks, and particularly relates to a left-right opposite-opening cabin door closing position lock which adopts a mechanical comprehensive butt-joint lock design, achieves control over locking and unlocking of a left cabin door and a right cabin door through an actuator cylinder and a lock key, and is good in collaboration, simple in overall structure, high in reliability, light in weight and high in reliability. Deformation and jump generation of the left-right split cabin door due to the aerodynamic load effect can be effectively inhibited, the flight resistance of an airplane is increased, the load of the driving mechanism after the left-right split cabin door is closed can be reduced, pre-tightening force does not need to be applied to the left-right split cabin door, and the fatigue life of the structure can be effectively guaranteed.

Description

Technical Field

[0001] The present application belongs to the field of closed position locks for left and right hatch doors, and specifically relates to a closed position lock for left and right hatch doors. Background Art

[0002] Some doors on the aircraft are split left and right. Currently, after the split left and right doors are closed, they are usually kept closed in the following two ways:

[0003] 1) The driving mechanism of the left and right doors is used to pull the left and right doors and keep them closed. This technical solution has high requirements on the rigidity of the left and right doors and has a large weight cost. In addition, the driving mechanism is usually arranged close to the left and right doors, and the operating lever arm is small. The left and right doors are easily affected by aerodynamic loads, deformed, and generate step differences, which increases the flight resistance of the aircraft. In some solutions, the driving mechanism is designed to apply a pre-tightening force to the left and right doors so that the left and right doors are pre-deformed in the closed position to balance the aerodynamic load, avoid deformation and generate large step differences, and reduce the impact on the flight resistance of the aircraft. However, there will be a large stress between the driving mechanism and the left and right doors, which affects the fatigue life of the structure;

[0004] 2) Two closed position locks are used to lock the left door and the right door in the closed position respectively. The two closed position locks operate independently, and the coordination is difficult to ensure. In addition, the overall structure is complex, the number of parts is large, the reliability is low, and the weight is large.

[0005] This application is proposed in view of the above-mentioned technical defects. Summary of the invention

[0006] The purpose of the present application is to provide a closed position lock for left and right split hatches to overcome or alleviate at least one aspect of the known technical defects.

[0007] The technical solution of this application is:

[0008] A closed position lock for left and right split doors, comprising:

[0009] A shell body connected to the door frame and having an opening thereon;

[0010] A left lock hook is hinged in the housing, with its head extending out of the opening to hook a lock pin provided on the left door, and having a left lock tongue and a left lock head;

[0011] A right lock hook is hinged in the shell, with its head extending from the opening to hook the lock pin provided on the right door, and is provided with a right lock tongue, a right lock platform, a right lock platform and a stop curved surface;

[0012] A lock key is hinged in the housing, with a lock opening at one end and a lock block at the other end;

[0013] A lock shaft, arranged in the lock mouth;

[0014] The two ends of the return spring are connected between the housing and the lock key, and the lock block is kept against the right lock hook by its elastic force, so that the lock port is clamped on the left lock head, the left lock hook is restricted to rotate by the lock shaft, and the lock block is abutted against the right lock platform to restrict the right lock hook from rotating, thereby locking the left and right doors in the closed position;

[0015] The actuator is connected in the housing, and the piston rod is extended to push against the lock key, thereby pushing the lock key to rotate, so that the lock block is separated from the right lock hook and the right lock platform, and the lock mouth is separated from the left lock head, thereby releasing the lock of the left and right doors in the closed position and enabling them to be opened;

[0016] The actuator piston rod contracts and separates from the lock key, and the stop curved surface abuts against the lock block to prevent the lock key from rotating. When the left and right doors are closed, the lock pins arranged thereon contact with the left and right lock tongues, pushing the left and right lock hooks to rotate, thereby resetting the left and right lock hooks and the lock key, locking the left and right doors in the closed position.

[0017] Optionally, the above-mentioned left and right hatch door closed position lock further includes:

[0018] The left lock spring is connected between the left lock hook and the shell. When the left door is closed, its elastic force causes the left lock head to rest against the lock shaft. When the left door is opened, its elastic force causes the left lock hook to rotate, so that the head of the left lock hook releases the lock pin set on the left door, thereby releasing the lock of the left door in the closed position.

[0019] Optionally, in the above-mentioned closed position lock of the left and right doors, the left lock hook is hinged in the shell through a pin shaft.

[0020] Optionally, in the above-mentioned closed position lock of the left and right doors, the left locking spring is a torsion spring, which is sleeved on a pin shaft connected to the left locking hook.

[0021] Optionally, the above-mentioned left and right hatch door closed position lock further includes:

[0022] The right lock spring is connected between the right lock hook and the shell. When the right cabin door is closed, its elastic force makes the right lock platform abut against the lock block. When the right cabin door is opened, its elastic force makes the right lock hook rotate, so that the head of the right lock hook releases the lock pin set on the right cabin door, thereby releasing the lock of the right cabin door in the closed position and making the stop curved surface abut against the lock block.

[0023] Optionally, in the above-mentioned left and right split hatch closed position lock, the right lock hook is hinged in the housing through a pin.

[0024] Optionally, in the above-mentioned closed position lock of the left and right doors, the right locking spring is a torsion spring, which is sleeved on a pin shaft connected to the right locking hook.

[0025] Optionally, the above-mentioned left and right hatch door closed position lock further includes:

[0026] The guide plate is connected in the shell body and has a left guide opening and a right guide opening at both ends. When the left door and the right door are closed, the guide plate is stuck on the locking pins arranged on the left door and the right door.

[0027] Optionally, in the above-mentioned closed position lock of the left and right opening doors, the left guide opening and the right guide opening are V-shaped.

[0028] Optionally, in the above-mentioned closed position lock of the left and right opening doors, one end of the return spring is hooked on a pin shaft arranged in the shell, and the other end is hooked on a hook arranged on the lock key.

[0029] Optionally, in the above-mentioned closed position lock of the left and right opening doors, the left door and the right door are hinged on both sides of the door frame through suspension hinges, one end of two driving connecting rods is hinged on the left door and the right door, and the other end is hinged on one end of the driving rocker arm, the middle part of the two driving rocker arms is hinged on the support plates arranged on both sides of the door frame, and the other end is hinged on the driving mechanism, and the two driving mechanisms drive the left door and the right door to open and close in the door frame through the driving rocker arm and the driving connecting rod.

[0030] Optionally, in the above-mentioned closed position lock of the left and right opening doors, one end of the two driving connecting rods facing away from the driving rocker arm is hinged on two suspension hinges.

[0031] Optionally, in the above-mentioned closed position lock of the left and right doors, a lock seat is connected to the inner side of the left door and the right door.

[0032] Optionally, in the closed position lock of the left and right doors,

[0033] A lock pin is arranged on the lock seat.

[0034] Optionally, in the above-mentioned closed position lock for the left and right doors, the shell is connected to a support plate arranged at the bottom or top of the door frame.

[0035] This application has at least the following beneficial technical effects:

[0036] Provided is a closed position lock for left and right cabin doors, which adopts a mechanical integrated docking lock design, realizes the control of locking and unlocking the left and right cabin doors with an actuator and a lock key, has good coordination, a simple overall structure, high reliability, and light weight, can effectively prevent the left and right cabin doors from being deformed and generating step differences due to aerodynamic loads, and increase the flight resistance of the aircraft, and can reduce the load of the driving mechanism after the left and right cabin doors are closed, and there is no need to apply pre-tightening force to the left and right cabin doors, which can effectively ensure the fatigue life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the assembly of the closed position lock of the left and right split doors provided in an embodiment of the present application;

[0038] Figure 2 It is a schematic diagram of the installation of the closed position lock of the left and right split doors provided in an embodiment of the present application;

[0039] Figure 3 It is a schematic diagram of a left and right cabin door closed position lock provided by an embodiment of the present application to lock the left cabin door and the right cabin door in a closed position;

[0040] Figure 4 It is a schematic diagram of the closed position lock of the left and right doors provided in the embodiment of the present application releasing the lock of the left door and the right door in the closed position, and the left door and the right door are opened;

[0041] in:

[0042] 1-housing; 2-left lock hook; 3-right lock platform; 4-left lock spring; 5-right lock hook; 6-right lock spring; 7-lock key; 8-lock shaft; 9-guide plate; 10-reset spring; 11-door frame; 12-left door; 13-right door; 14-suspension hinge; 15-drive connecting rod; 16-drive rocker arm; 17-actuator; 18-lock seat; 19-lock pin; 20-left lock tongue; 21-left lock head; 22-right lock tongue; 23-lock block.

[0043] In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be construed as limitations on the present application. DETAILED DESCRIPTION

[0044] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be described in further detail in detail and in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design.

[0045] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall have the usual meanings understood by those of ordinary skill in the art to which this application belongs. The words used in the description of this application to indicate orientation are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. The word "include" used in the description of this application indicates that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0046] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "installation", "connection" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Technical personnel in the field can understand its specific meaning in this application according to the specific circumstances.

[0047] A closed position lock for a left and right split hatch comprises a housing 1, a left lock hook 2, a left lock spring 4, a right lock hook 5, a right lock spring 6, a lock key 7, a lock shaft 8, a guide plate 9, a return spring 10, and an actuator 17. Figure 1 shown.

[0048] The left and right double doors are arranged in the door frame 11, and the left door 12 and the right door 13 are hinged on both sides of the door frame 11 through the suspension hinge 14. One end of the two driving connecting rods 15 is hinged on the left door 12 and the right door 13, which can be specifically hinged on the suspension hinge 14, and the other end is hinged on one end of the driving rocker arm 16. The middle part of the two driving rocker arms 16 is hinged on the support plates arranged on both sides of the door frame 11, and the other end is hinged on the driving mechanism. The driving mechanism specifically includes an actuator. The two driving mechanisms can drive the left door 12 and the right door 13 to open and close in the door frame 11 through the driving rocker arm 16 and the driving connecting rod 15.

[0049] The inner sides of the left door 12 and the right door 13 are connected with a lock seat 18 , and a lock pin 19 is arranged on the lock seat 18 .

[0050] The left lock hook 2, the left lock spring 4, the right lock hook 5, the right lock spring 6, the lock key 7, the lock shaft 8, the guide plate 9, the return spring 10, and the actuator 17 are arranged in the housing 1, and the housing 1 is connected to the inner side of the bottom or top of the door frame 11, and can be specifically connected to the support plate arranged in the bottom or top of the door frame 11, such as Figure 2 shown.

[0051] The left lock hook 2 is hinged in the shell 1 through a pin shaft, and its head extends from the opening on the shell 1 to hook the lock pin 19 set on the left cabin door 12. The left lock hook 2 has a left lock tongue 20 and a left lock head 21, wherein the left lock head 21 extends from the opening on the shell 1.

[0052] The right lock hook 5 is hinged in the shell body 1 through a pin shaft, and its head extends from the opening on the shell body 1 to hook the lock pin 19 set on the right cabin door 13. The right lock hook 5 is provided with a right lock tongue 22 and a right lock platform 3, wherein the right lock tongue 22 extends from the opening on the shell body 1, and a stop curved surface is provided between the right lock platform 3 and the head of the right lock hook 5.

[0053] The lock key 7 is hinged in the housing 1 through a pin shaft, with a lock opening at one end and a lock block 23 at the other end.

[0054] The lock shaft 8 is arranged in the lock mouth.

[0055] The two ends of the return spring 10 are connected between the housing 1 and the lock key 7. Specifically, one end of the return spring 10 can be hooked on the pin shaft provided in the housing 1, and the other end can be hooked on the hook provided on the lock key 7. The elastic force of the return spring 10 produces a counterclockwise rotation trend on the lock key 7, so that the lock block 23 is kept against the right lock hook 5, and the lock mouth is stuck on the left lock head 21, so that the lock shaft 8 limits the counterclockwise rotation of the left lock hook 2, and the lock block 23 is against the right lock platform 3 to limit the clockwise rotation of the right lock hook 5, so as to lock the left door 12 and the right door 13 in the closed position. Figure 3 shown.

[0056] The guide plate 9 is connected in the shell body 1, and specifically can be connected to two pin shafts of the left lock hook 2 and the right lock hook 5 and fixed in the shell body 1, with a left guide opening and a right guide opening at both ends. The left guide opening and the right guide opening are V-shaped, and when the left hatch 12 and the right hatch 13 are closed, they are stuck on the lock pins 19 set on the left hatch 12 and the right hatch 13.

[0057] The left lock spring 4 is connected between the left lock hook 2 and the housing 1, and its elastic force produces a counterclockwise rotation trend on the left lock hook 2, so that the left lock head 21 abuts against the lock shaft 8 when the left door 12 and the right door 13 are closed. The left lock spring 4 is a torsion spring, which is sleeved on the pin connected to the left lock hook 2.

[0058] The right lock spring 6 is connected between the right lock hook 5 and the housing 1, and its elastic force produces a clockwise rotation trend on the right lock hook 5, so that the right lock platform 3 abuts against the lock block 23 when the left door 12 and the right door 13 are closed. The right lock spring 6 is a torsion spring, which is sleeved on the pin connected to the right lock hook 5.

[0059] The actuator 17 is connected inside the housing 1 .

[0060] The piston rod of the actuator 17 is extended to push against the lock key 7, thereby pushing the lock key 7 to overcome the elastic force of the return spring 10 and rotate clockwise, so that the lock block 23 is separated from the right lock hook 5, the lock mouth is separated from the left lock head 21, and the lock shaft 8 releases the restriction on the counterclockwise rotation of the left lock hook 2. The left lock hook 2 rotates counterclockwise under the elastic force of the left lock spring 4, so that the head of the left lock hook 2 releases the lock pin 19 provided on the left cabin door 12, and the lock of the left cabin door 12 in the closed position is released, and the lock block 23 is separated from the right lock platform 3, releasing the restriction on the right lock hook 5 to rotate clockwise. The right lock hook 5 rotates clockwise under the elastic force of the right lock spring 6, so that the head of the right lock hook 5 releases the lock pin 19 set on the right door 13, and the lock of the right door 13 in the closed position is released, and the stop curved surface abuts against the lock block 23, which can prevent the lock key 7 from rotating counterclockwise. At this time, the two driving mechanisms can be used to drive the left door 12 and the right door 13 to open, and the lock pins 19 on the left door 12 and the right door 13 are disengaged from the heads of the left lock hook 2 and the right lock hook 5, and disengaged from the left guide opening and the right guide opening, as shown in FIG. Figure 4 shown.

[0061] After the left door 12 and the right door 13 are opened, the piston rod of the actuator 17 can be retracted and separated from the lock key 7. Under the action of the stop curved surface, the lock key 7 will not rotate counterclockwise under the elastic force of the return spring 10. When the left door 12 and the right door 13 are driven to close by the two driving mechanisms, the lock pins 19 on the left door 12 and the right door 13 will slide back into the left guide opening and the right guide opening, and contact the left lock tongue 20 and the right lock tongue 22, thereby pushing the left lock hook 2 to overcome the elastic force of the left lock spring 4 to rotate clockwise, and pushing the right lock hook 5 to overcome the elastic force of the right lock spring 6 The lock block 23 abuts against the right lock platform 3 to limit the clockwise rotation of the right lock hook 5, thereby re-locking the left door 12 and the right door 13 in the closed position.

[0062] The closed position lock of the left and right doors disclosed in the above-mentioned embodiment adopts a mechanical integrated docking lock design, and uses an actuator 17 and a lock key 7 to control the locking and unlocking of the left door 12 and the right door 13. It has good coordination, a simple overall structure, high reliability, and light weight. It can effectively prevent the left and right doors from being deformed and generating step differences due to aerodynamic loads, thereby increasing the flight resistance of the aircraft, and can reduce the load on the driving mechanism after the left and right doors are closed. There is no need to apply pre-tightening force to the left and right doors, and the fatigue life of the structure can be effectively guaranteed.

[0063] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A closed position lock for left and right split doors, characterized in that: include: A shell (1) is connected to a door frame (11) and has an opening; A left lock hook (2) is hinged in the housing (1), with its head extending out from the opening to hook a lock pin (19) provided on the left door (12), and having a left lock tongue (20) and a left lock head (21); A right lock hook (5) is hinged in the housing (1), with its head extending out from the opening to hook a lock pin (19) provided on the right cabin door (13), and is provided with a right lock tongue (22), a right lock platform (3), the right lock platform (3) and a stop curved surface; A lock key (7) is hinged in the housing (1), with a lock opening at one end and a lock block (23) at the other end; A lock shaft (8), arranged in the lock opening; The two ends of the return spring (10) are connected between the housing (1) and the lock key (7). The elastic force of the return spring (10) causes the lock block (23) to be kept against the right lock hook (5), so that the lock port is clamped on the left lock head (21), and the lock shaft (8) is used to limit the rotation of the left lock hook (2). The lock block (23) is also used to be pressed against the right lock platform (3) to limit the rotation of the right lock hook (5), thereby locking the left door (12) and the right door (13) in the closed position. The actuator (17) is connected in the housing (1), and the piston rod is extended to push against the lock key (7), thereby pushing the lock key (7) to rotate, so that the lock block (23) is separated from the right lock hook (5) and the right lock platform (3), and the lock mouth is separated from the left lock head (21), thereby releasing the lock of the left cabin door (12) and the right cabin door (13) in the closed position and enabling them to be opened; The piston rod of the actuator (17) contracts and separates from the lock key (7), and the stop curved surface abuts against the lock block (23), preventing the lock key (7) from rotating. When the left cabin door (12) and the right cabin door (13) are closed, the lock pin (19) arranged thereon contacts the left lock tongue (20) and the right lock tongue (22), pushing the left lock hook (2) and the right lock hook (5) to rotate, thereby resetting the left lock hook (2), the right lock hook (5) and the lock key (7), and locking the left cabin door (12) and the right cabin door (13) in the closed position.

2. The closed position lock for the left and right split doors according to claim 1, characterized in that: Also includes: The left lock spring (4) is connected between the left lock hook (2) and the housing (1). When the left door (12) is closed, its elastic force causes the left lock head (21) to abut against the lock shaft (8). When the left door (12) is opened, its elastic force causes the left lock hook (2) to rotate, so that the head of the left lock hook (2) releases the lock pin (19) provided on the left door (12), thereby releasing the lock of the left door (12) in the closed position.

3. The closed position lock for the left and right split doors according to claim 2, characterized in that: The left lock hook (2) is hinged in the housing (1) via a pin.

4. The closed position lock for the left and right split doors according to claim 3, characterized in that: The left lock spring (4) is a torsion spring and is sleeved on a pin connected to the left lock hook (2).

5. The closed position lock for the left and right split doors according to claim 1, characterized in that: Also includes: The right lock spring (6) is connected between the right lock hook (5) and the housing (1). When the right door (13) is closed, its elastic force causes the right lock platform (3) to abut against the lock block (23). When the right door (13) is opened, its elastic force causes the right lock hook (5) to rotate, causing the head of the right lock hook (5) to release the lock pin (19) provided on the right door (13), thereby releasing the lock of the right door (13) in the closed position and causing the stop curved surface to abut against the lock block (23).

6. The closed position lock for the left and right split doors according to claim 5, characterized in that: The right lock hook (5) is hinged in the housing (1) via a pin.

7. The closed position lock for the left and right split doors according to claim 6, characterized in that: The right lock spring (6) is a torsion spring, which is sleeved on a pin connected to the right lock hook (5).

8. The closed position lock for the left and right split doors according to claim 1, characterized in that: Also includes: The guide plate (9) is connected in the housing (1) and has a left guide opening and a right guide opening at both ends. When the left door (12) and the right door (13) are closed, the guide plate (9) is stuck on the lock pins (19) arranged on the left door (12) and the right door (13).

9. The closed position lock for the left and right split doors according to claim 8, characterized in that: The left guide opening and the right guide opening are V-shaped.

10. The closed position lock for left and right split doors according to claim 1, characterized in that: One end of the return spring (10) is hooked on a pin shaft arranged in the housing (1), and the other end is hooked on a hook arranged on the lock key (7).

11. The closed position lock for left and right split doors according to claim 1, characterized in that: The left cabin door (12) and the right cabin door (13) are hinged on both sides of the cabin door frame (11) through a suspension hinge (14); one end of two driving connecting rods (15) is hinged on the left cabin door (12) and the right cabin door (13), and the other end is hinged on one end of a driving rocker arm (16); the middle parts of the two driving rockers (16) are hinged on support plates arranged on both sides of the cabin door frame (11), and the other end is hinged on a driving mechanism; the two driving mechanisms drive the left cabin door (12) and the right cabin door (13) to open and close in the cabin door frame (11) through the driving rocker arm (16) and the driving connecting rod (15).

12. The closed position lock for the left and right split doors according to claim 11, characterized in that: One end of the two driving connecting rods (15) facing away from the driving rocker arm (16) is hinged on the two suspension hinges (14).

13. The closed position lock for left and right split doors according to claim 1, characterized in that: The inner sides of the left door (12) and the right door (13) are connected with a lock seat (18).

14. The closed position lock for the left and right split doors according to claim 13, characterized in that: A lock pin (19) is arranged on the lock seat (18).

15. The closed position lock for left and right split doors according to claim 1, characterized in that: The shell (1) is connected to a support plate arranged at the bottom or top of the door frame (11).

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