Cabin door latch and lock mechanism sequence control device thereof

Abstract

The invention belongs to the technical field of cabin door latch and lock mechanism control design, and particularly relates to a cabin door latch and lock mechanism sequence control device. Sequential control of the latch mechanism and the lock mechanism when the cabin door is opened and closed is achieved through the track control groove, accurate control over the movement stroke can be guaranteed by controlling the machining precision of the track control groove, positioning through a tool is not needed, installation and debugging are convenient, the overall structure is simple, the number of parts is small, the weight is small, and application to airplanes is facilitated. And the mass of the aircraft can be reduced on the whole.

Description

Technical Field

[0001] The present application belongs to the technical field of hatch door latch and its locking mechanism control design, and specifically relates to a hatch door latch and its locking mechanism sequence control device. Background Art

[0002] After some cabin doors on an aircraft are closed, they need to be latched with a latch mechanism and locked with a lock mechanism. When the cabin door is opened, it needs to be unlocked and unlatched. To this end, currently, multiple sets of planar wheel groove mechanisms are mostly used to sequentially control the latch mechanism and the lock mechanism when the cabin door is opened and closed, or a separate rod system is used to sequentially control the latch mechanism and the lock mechanism when the cabin door is opened and closed.

[0003] Multiple sets of planar wheel groove mechanisms are used to sequentially control the latch mechanism and the lock mechanism when the hatch is opened and closed. The number of parts is large and the weight is heavy.

[0004] A separate rod system is used to sequentially control the latch mechanism and the lock mechanism when the hatch is opened and closed. The overall structure is complex, special tooling is required for positioning, the installation error is large, installation and debugging are difficult, and precise control of the motion stroke is difficult.

[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 hatch latch and a sequential control device for its locking mechanism to overcome or alleviate at least one aspect of the known technical defects.

[0007] The technical solution of this application is:

[0008] A hatch latch and a sequential control device for its locking mechanism, comprising:

[0009] A support (1) connected to the cabin door (15);

[0010] The cam (2) is hinged on the support (1), and has a track control groove on one side, which comprises a lock control section AB, a lock holding section BC, a latch holding section CD, and a latch control section DE in sequence, wherein the lock control section AB and the latch control section DE are track groove sections with non-uniform radius; the lock holding section BC and the latch holding section CD are track groove sections with uniform radius;

[0011] A lock driving shaft (7) is arranged in a support hole provided on the support (1), one end of which is connected to one end of a lock driving crank (8), and the other end of which is connected to one end of a lock driving rocker arm (9); a lock driving roller (10) is arranged at the other end of the lock driving crank (8), and the other end of the lock driving rocker arm (9) is connected to a lock mechanism;

[0012] A latch driving shaft (11) is arranged in a supporting hole provided on the support (1), one end of which is connected to one end of a latch driving crank (12), and the other end of which is connected to one end of a latch driving rocker arm (13). A latch driving roller (14) is arranged at the other end of the latch driving crank (12), and the other end of the latch driving rocker arm (13) is connected to the latch mechanism;

[0013] When the hatch (15) is closed, the latch mechanism is latched, and the lock mechanism is locked, the lock drive roller (10) is located in the lock control section AB, and the latch drive roller (14) is located in the latch holding section CD;

[0014] The driving cam (2) rotates, so that the lock driving roller (10) passes through the lock control section AB, and then drives the lock mechanism to unlock through the lock driving crank (8), the lock driving shaft (7), and the lock driving rocker arm (9). At the same time, the latch driving roller (14) passes through the latch holding section CD, and then the lock driving roller (10) passes through the lock holding section BC. At the same time, the latch driving roller (14) passes through the latch control section DE, and then drives the latch mechanism to unlatch through the latch driving crank (12), the latch driving shaft (11), and the latch driving rocker arm (13), so as to open the cabin door (15).

[0015] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, after the hatch (15) is closed, the cam (2) is driven to make the lock drive roller (10) pass through the latch holding section CD, and at the same time, the latch drive roller (14) passes through the latch control section DE, driving the latch mechanism to latch, and then making the lock drive roller (10) pass through the lock control section AB, driving the locking mechanism to lock, and at the same time, the latch drive roller (14) passes through the latch holding section CD, restoring the state when the hatch (15) is closed, the latch mechanism is latched, and the locking mechanism is locked.

[0016] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the lock control section AB is a curved trajectory groove.

[0017] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the latch control section DE is an involute trajectory groove.

[0018] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the lock control section AB and the latch holding section CD have equal arcs.

[0019] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the arc of the lock control section AB and the latch holding section CD is 60°.

[0020] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the radii of the lock holding section BC and the latch holding section CD are equal.

[0021] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, there is a smooth transition between the lock control section AB and the lock holding section BC.

[0022] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, there is a smooth transition between the lock holding section BC and the latch holding section CD.

[0023] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, there is a smooth transition between the latch holding section CD and the latch control section DE.

[0024] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the lock control section AB, the lock holding section BC, the latch holding section CD, and the latch control section DE of the track control groove on the cam (2) are distributed in a counterclockwise direction.

[0025] According to at least one embodiment of the present application, the above-mentioned hatch latch and its locking mechanism sequence control device, the above-mentioned hatch latch and its locking mechanism sequence control device further includes:

[0026] The support shaft (3) is arranged in a support hole opened on the support (1), and one end of the support shaft (3) is connected to the cam (2).

[0027] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, a spacer sleeve (6) is sleeved on one end of the support shaft (3) connected to the cam (2), and the spacer sleeve (6) is located between the support (1) and the cam (2).

[0028] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, bearings (5) are installed at both ends of the support shaft (3).

[0029] According to at least one embodiment of the present application, in the above-mentioned hatch latch and its locking mechanism sequential control device, in the above-mentioned hatch latch and its locking mechanism sequential control device, the support shaft (3) faces one end of the cam (2), passes through the mounting hole opened on the cam (2), and is connected to the handle (4).

[0030] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, a spline is formed between the support shaft (3) and the mounting hole.

[0031] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, the support (1) is welded or bolted to the hatch (15).

[0032] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, a hole is opened on the lock driving crank (8) and is sleeved on the lock driving shaft (7).

[0033] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, a hole is opened on the latch driving rocker arm (13) and is sleeved on the latch driving shaft (11).

[0034] According to at least one embodiment of the present application, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, in the above-mentioned sequential control device for the hatch latch and its locking mechanism, a hole is opened on the latch driving crank (12) and sleeved on the latch driving shaft (11);

[0035] The latch driving rocker arm (13) has an opening and is sleeved on the latch driving rotating shaft (11).

[0036] This application has at least the following beneficial technical effects:

[0037] A sequential control device for a door latch and its locking mechanism is provided. A cam is designed as a core mechanism to replace multiple sets of planar wheel groove mechanisms and a separate rod system. A trajectory control groove is used to realize sequential control of a latch mechanism and a locking mechanism when the door is opened and closed. The precise control of the motion stroke can be ensured by controlling the machining accuracy of the trajectory control groove. No tooling is required for positioning, which is convenient for installation and debugging. The overall structure is simple, the number of parts is small, and the weight is small. When used on an aircraft, the weight of the aircraft can be reduced as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the assembly of a hatch latch and a sequential control device for its locking mechanism provided by an embodiment of the present application;

[0039] Figure 2 It is a schematic diagram of the installation of a hatch latch and a sequential control device for its locking mechanism provided in an embodiment of the present application;

[0040] Figure 3 is a schematic diagram of a cam provided in an embodiment of the present application;

[0041] Figure 4 It is a schematic diagram of the assembly of the cam, support shaft, handle, bearing, and spacer provided in the embodiment of the present application;

[0042] Figure 5 It is a schematic diagram of a lock drive shaft, a lock drive crank, a lock drive rocker arm, and a lock drive roller provided in an embodiment of the present application;

[0043] Figure 6 It is a schematic diagram of a latch drive shaft, a latch drive crank, a latch drive rocker arm, and a latch drive roller provided in an embodiment of the present application;

[0044] Figure 7 It is a schematic diagram of a sequential control device for a hatch latch and its locking mechanism when the hatch is closed, the latch mechanism is latched, and the locking mechanism is locked, provided in an embodiment of the present application;

[0045] Figure 8 It is a schematic diagram of unlocking the lock mechanism of the hatch latch and its lock mechanism sequence control device provided in the embodiment of the present application;

[0046] Fig. 9 is a schematic diagram of a hatch latch and a locking mechanism sequence control device thereof provided in an embodiment of the present application for unlocking the locking mechanism;

[0047] in:

[0048] 1-support; 2-cam; 3-support shaft; 4-handle; 5-bearing; 6-spacer; 7-lock drive shaft; 8-lock drive crank; 9-lock drive rocker arm; 10-lock drive roller; 11-latch drive shaft; 12-latch drive crank; 13-latch drive rocker arm; 14-latch drive roller; 15-hatch door.

[0049] 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

[0050] 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.

[0051] 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.

[0052] 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.

[0053] A hatch latch and a sequential control device for its locking mechanism, comprising a support 1, a cam 2, a support shaft 3, a handle 4, a bearing 5, a spacer 6, a lock drive shaft 7, a lock drive crank 8, a lock drive rocker arm 9, a lock drive roller 10, a latch drive shaft 11, a latch drive crank 12, a latch drive rocker arm 13, and a latch drive roller 14, as shown in FIG. Figure 1-Figure 2 shown.

[0054] The support 1 is connected to the hatch 15, and specifically can be connected by welding or bolts.

[0055] One side of the cam 2 has a trajectory control groove, which includes a lock control segment AB, a lock holding segment BC, a latch holding segment CD, and a latch control segment DE in a counterclockwise direction. There is a smooth transition between the lock control segment AB, the lock holding segment BC, the latch holding segment CD, and the latch control segment DE, wherein the lock control segment AB is a non-equal radius trajectory groove segment, which may be a curved trajectory groove; the lock holding segment BC is an equal radius trajectory groove segment; the latch holding segment CD is an equal radius trajectory groove segment; and the latch control segment DE is a non-equal radius trajectory groove segment, which may be an involute trajectory groove. The lock control segment AB and the latch holding segment CD are arcs, which may be 60°; the arcs of the lock holding segment BC and the latch control segment DE are greater than those of the lock control segment AB and the latch holding segment CD; the radii of the lock holding segment BC and the latch holding segment CD are equal, such as Figure 3 shown.

[0056] The support shaft 3 is arranged in the support hole opened on the support 1, one end of which passes through the mounting hole opened on the cam 2 and is connected to the handle 4, and the end is splined with the mounting hole, and a spacer 6 is sleeved on the end, and the spacer 6 is located between the support 1 and the cam 2. In addition, bearings 5 ​​are installed at both ends of the support shaft 3, such as Figure 4 shown.

[0057] The lock drive shaft 7 is arranged in a support hole opened on the support 1, one end of which is connected to one end of the lock drive crank 8, specifically, a hole can be opened on the lock drive crank 8 and sleeved on the lock drive shaft 7, and the other end is connected to one end of the lock drive rocker arm 9, specifically, a hole can be opened on the lock drive rocker arm 9 and sleeved on the lock drive shaft 7; the other end of the lock drive crank 8 is provided with a lock drive roller 10, such as Figure 5 As shown, the other end of the lock driving rocker arm 9 is connected to the lock mechanism, and the lock driving roller 10 is arranged in the track control groove.

[0058] The latch driving shaft 11 is arranged in a supporting hole opened on the support 1, one end of which is connected to one end of a latch driving crank 12, specifically, a hole can be opened on the latch driving crank 12, and the latch driving shaft 11 can be sleeved thereon, and the other end of which is connected to one end of a latch driving rocker arm 13, specifically, a hole can be opened on the latch driving rocker arm 13, and the latch driving shaft 11 can be sleeved thereon, and a latch driving roller 14 is arranged at the other end of the latch driving crank 12, as shown in FIG. Figure 6 As shown, the other end of the latch driving rocker arm 13 is connected to the latch mechanism, and the latch driving roller 14 is arranged in the track control groove.

[0059] When the hatch 15 is closed, the latch mechanism is latched, and the lock mechanism is locked, the lock drive roller 10 is located at point A of the lock control section AB, and the latch drive roller 14 is located at point C of the latch holding section CD. Figure 7 shown.

[0060] The handle 4 drives the cam 2 to rotate 60° clockwise, so that the lock driving roller 10 rolls from point A to point B and passes through the lock control section AB. Since the lock control section AB is a non-uniform radius track groove section, the lock driving crank 8 can be driven to swing, thereby rotating the lock driving shaft 7, driving the lock driving rocker arm 9 to swing, and driving the lock mechanism to unlock. The track of the lock control section AB can be designed according to the actual needs of the lock mechanism unlocking. At the same time, the latch driving roller 14 rolls from point C to point D and passes through the latch holding section CD. Since the latch holding section CD is a uniform radius track groove section, the position of the latch driving roller 14 can remain stationary and will not act on the latch mechanism. Figure 8 As shown, the handle 4 continues to drive the cam 2 to rotate 120° clockwise, so that the lock driving roller 10 rolls from point B to point C, passes through the lock holding section BC and enters the latch holding section CD. Since the lock holding section BC and the latch holding section CD are equal-radius track groove sections with equal radii, the position of the lock driving roller 10 can remain stationary and will not affect the lock mechanism. At the same time, the latch driving roller 14 rolls from point D to point E, passes through the latch control section DE. Since the latch control section DE is a non-equal-radius track groove section, it can drive the latch driving crank 12 to swing, and then the latch driving shaft 11 rotates, driving the latch driving rocker arm 13 to swing, and driving the latch mechanism to unlatch. The trajectory of the latch control section DE can be designed according to the actual needs of the lock mechanism to unlock, such as Fig. 9 As shown, the sequential control of unlocking the lock mechanism and unlatching the latch mechanism is achieved, so that the hatch 15 can be opened.

[0061] After the hatch 15 is closed, the handle 4 can be used to drive the cam 2 to rotate 120° counterclockwise. During this process, the lock driving roller 10 rolls through the latch holding section CD and the lock holding section BC, and the position remains unchanged, which will not affect the locking mechanism. At the same time, the latch driving roller 14 rolls through the latch control section DE, driving the latch mechanism to latch, and continues to use the handle 4 to drive the cam 2 to rotate 60° counterclockwise. During this process, the lock driving roller 10 rolls through the lock control section AB, driving the lock mechanism to lock, and at the same time, the latch driving roller 14 rolls through the latch holding section CD, which will not affect the latch mechanism, thereby realizing sequential control of the latching mechanism and the locking mechanism, restoring the state when the hatch 15 is closed, the latch mechanism is latched, and the lock mechanism is locked, thereby ensuring the locking of the hatch 15.

[0062] In the sequential control device for the door latch and its locking mechanism disclosed in the above-mentioned embodiment, a cam 2 is designed as the core mechanism to replace multiple sets of planar wheel groove mechanisms and a separate rod system, and a trajectory control groove is used to realize sequential control of the latch mechanism and the locking mechanism when the door is opened and closed. The precise control of the motion stroke can be ensured by controlling the machining accuracy of the trajectory control groove. No tooling is required for positioning, which is convenient for installation and debugging. The overall structure is simple, the number of parts is small, and the weight is small. When used on an aircraft, the weight of the aircraft can be reduced as a whole.

[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 hatch latch and its locking mechanism sequence control device, characterized in that: include: A support (1) connected to the cabin door (15); The cam (2) is hinged on the support (1), and has a track control groove on one side, which comprises a lock control section AB, a lock holding section BC, a latch holding section CD, and a latch control section DE in sequence, wherein the lock control section AB and the latch control section DE are track groove sections with non-uniform radius; the lock holding section BC and the latch holding section CD are track groove sections with uniform radius; A lock driving shaft (7) is arranged in a support hole provided on the support (1), one end of which is connected to one end of a lock driving crank (8), and the other end of which is connected to one end of a lock driving rocker arm (9); a lock driving roller (10) is arranged at the other end of the lock driving crank (8), and the other end of the lock driving rocker arm (9) is connected to a lock mechanism; A latch driving shaft (11) is arranged in a supporting hole provided on the support (1), one end of which is connected to one end of a latch driving crank (12), and the other end of which is connected to one end of a latch driving rocker arm (13). A latch driving roller (14) is arranged at the other end of the latch driving crank (12), and the other end of the latch driving rocker arm (13) is connected to the latch mechanism; When the hatch (15) is closed, the latch mechanism is latched, and the lock mechanism is locked, the lock drive roller (10) is located in the lock control section AB, and the latch drive roller (14) is located in the latch holding section CD; The driving cam (2) rotates, so that the lock driving roller (10) passes through the lock control section AB, and then drives the lock mechanism to unlock through the lock driving crank (8), the lock driving shaft (7), and the lock driving rocker arm (9). At the same time, the latch driving roller (14) passes through the latch holding section CD, and then the lock driving roller (10) passes through the lock holding section BC. At the same time, the latch driving roller (14) passes through the latch control section DE, and then drives the latch mechanism to unlatch through the latch driving crank (12), the latch driving shaft (11), and the latch driving rocker arm (13), so as to open the cabin door (15).

2. The hatch latch and its locking mechanism sequence control device according to claim 1, characterized in that: After the hatch (15) is closed, the cam (2) is driven to make the lock driving roller (10) pass through the latch holding section CD. At the same time, the latch driving roller (14) passes through the latch control section DE to drive the latch mechanism to latch. Then, the lock driving roller (10) passes through the lock control section AB to drive the lock mechanism to lock. At the same time, the latch driving roller (14) passes through the latch holding section CD to restore the hatch (15) to the state when the latch mechanism is latched and the lock mechanism is locked.

3. The hatch latch and its locking mechanism sequence control device according to claim 2, characterized in that: The lock control section AB is a curved track groove.

4. The hatch latch and its locking mechanism sequence control device according to claim 3, characterized in that: The latch control section DE is an involute trajectory groove.

5. The hatch latch and its locking mechanism sequence control device according to claim 4, characterized in that: The lock control section AB and the latch holding section CD have equal arcs.

6. The hatch latch and its locking mechanism sequence control device according to claim 5, characterized in that: The arc of the lock control section AB and the latch holding section CD is 60°.

7. The hatch latch and its locking mechanism sequence control device according to claim 6, characterized in that: The radii of the lock holding section BC and the latch holding section CD are equal.

8. The hatch latch and its locking mechanism sequence control device according to claim 7, characterized in that: There is a smooth transition between the lock control section AB and the lock holding section BC.

9. The hatch latch and its locking mechanism sequence control device according to claim 8, characterized in that: There is a smooth transition between the lock holding section BC and the latch holding section CD.

10. The hatch latch and its locking mechanism sequence control device according to claim 9, characterized in that: There is a smooth transition between the latch holding section CD and the latch control section DE.

11. The hatch door latch and its locking mechanism sequence control device according to claim 10, characterized in that: The lock control section AB, the lock holding section BC, the latch holding section CD and the latch control section DE of the track control groove on the cam (2) are distributed in a counterclockwise direction.

12. The hatch latch and its locking mechanism sequence control device according to claim 11, characterized in that: Also includes: The support shaft (3) is arranged in a support hole opened on the support (1), and one end of the support shaft (3) is connected to the cam (2).

13. The hatch latch and its locking mechanism sequence control device according to claim 12, characterized in that: A spacer sleeve (6) is sleeved on one end of the support shaft (3) connected to the cam (2), and the spacer sleeve (6) is located between the support (1) and the cam (2).

14. The hatch latch and its locking mechanism sequence control device according to claim 13, characterized in that: Bearings (5) are installed at both ends of the support shaft (3).

15. The hatch latch and its locking mechanism sequence control device according to claim 14, characterized in that: The support shaft (3) faces one end of the cam (2), passes through a mounting hole provided on the cam (2), and is connected to the handle (4).

16. The hatch latch and its locking mechanism sequence control device according to claim 15, characterized in that: The support shaft (3) is spline-matched with the mounting hole.

17. The hatch latch and its locking mechanism sequence control device according to claim 16, characterized in that: The support (1) is welded or bolted to the hatch (15).

18. The hatch latch and its locking mechanism sequence control device according to claim 17, characterized in that: A hole is opened on the lock driving crank (8) and sleeved on the lock driving shaft (7); A hole is opened on the latch driving rocker arm (13) and sleeved on the latch driving shaft (11); A bolt driving crank (12) has a hole formed thereon and is sleeved on the bolt driving rotating shaft (11); The latch driving rocker arm (13) has an opening and is sleeved on the latch driving rotating shaft (11).

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