Lock pin drive mechanism and hatch lock

Abstract

The present invention relates to a lock pin drive mechanism and a hatch lock, belonging to the technical field of hatch locks. The hatch lock comprises a lock pin, a lock hole, a lock pin drive mechanism, and an operating mechanism. The lock pin drive mechanism comprises a drive swing arm, a drive rod, an elastic force-applying member, a blocking member, and a limiting member. The drive swing arm has a locked position for inserting the lock pin into the lock hole on the door frame and an unlocked position for withdrawing the lock pin from the lock hole. The elastic force-applying member is used to cause the drive swing arm to have a tendency to rotate in a first direction or a second direction. The blocking member is used to at least block the drive swing arm in the second direction when the drive swing arm rotates to the locked position. The limiting member is used to block the drive swing arm in the first direction when the drive swing arm rotates to the unlocked position. The present invention can achieve self-locking of the drive swing arm in the locked position and the unlocked position, thereby achieving self-locking of the lock pin, thereby ensuring the reliability of the lock and facilitating the opening of the hatch.

Description

Technical Field

[0001] The invention relates to a lock pin driving mechanism and a cabin door lock, belonging to the technical field of cabin door locks. Background Art

[0002] In order to repair the equipment in the aircraft cabin, it is necessary to open a maintenance door on the aircraft fuselage. In addition, in order to ensure the connection strength between the maintenance door and the fuselage structure, the door lock is an indispensable and important component, which is used to realize the locking and opening of the maintenance door.

[0003] Existing hatch locks generally use a hard rod or soft rod mechanism to drive the lock pin movement. This method does not have a self-locking function, making the lock pin easily shifted due to vibration and other reasons, thereby affecting the reliability of the lock.

[0004] Therefore, in order to ensure the reliability of locking, a new hatch lock with optimized structure is needed. Summary of the Invention

[0005] The present invention aims to provide a lock pin driving mechanism and a hatch lock with a self-locking function that can ensure the reliability of locking.

[0006] The present invention provides a lock pin driving mechanism, which is arranged in a hatch lock and is connected to the lock pin to drive the lock pin to move, thereby unlocking or locking the hatch lock, and has the following characteristics:

[0007] A driving swing arm is rotatably supported on the hatch door and has a locking position in which the lock pin is inserted into a lock hole on the door frame and an unlocking position in which the lock pin is pulled out of the lock hole, and can be rotated between the locking position and the unlocking position;

[0008] A driving rod member, used to connect the driving swing arm member and the locking pin, one end of which is hinged to the first swing end of the driving swing arm member, and the other end of which is hinged to the non-locking end of the locking pin;

[0009] an elastic force applying member, configured to cause the driving swing arm member to have a tendency to rotate in a first direction or a second direction, wherein the first direction is a direction in which the driving swing arm member rotates from the locked position to the unlocked position, and the second direction is a direction in which the driving swing arm member rotates from the unlocked position to the locked position;

[0010] a blocking component, at least for blocking the driving swing arm in the second direction when the swing arm is rotated to the locking position; and

[0011] The limiting component is used to block the driving swing arm in the first direction when the swing arm is rotated to the unlocking position.

[0012] When the driving swing arm is in the locked position, the elastic force applying member applies force to the driving swing arm, thereby causing it to have a tendency to rotate along the second direction.

[0013] When the driving swing arm is in the unlocking position, the elastic force applying member applies force to the driving swing arm, so that the driving swing arm tends to rotate along the first direction.

[0014] The lock pin driving mechanism provided by the present invention may also have the following features:

[0015] The limiting components include:

[0016] A pull rod, a first end of which is indirectly or directly hinged to the door to form a first hinge point, and a second end of which has a movement limiting portion; and

[0017] The movable rod has a first end that is sleeved with the second end of the pull rod, and a second end that is hinged with the second swing end of the driving swing arm to form a second hinge point.

[0018] A travel groove for sliding the movable limit portion is provided in the movable rod, the travel groove extends to the first end of the movable rod and is provided with a constricted portion for abutting and cooperating with the movable limit portion.

[0019] When the movable limiting portion abuts against the necking portion, the driving swing arm is in the unlocking position.

[0020] The lock pin driving mechanism provided by the present invention may also have the following features:

[0021] The elastic force applying member is a compression spring, which is arranged in the travel groove, with one end abutting against the movement limiting portion and the other end abutting against the end wall of the travel groove.

[0022] The lock pin driving mechanism provided by the present invention may also have the following features:

[0023] Wherein, when the driving swing arm is in the locked position, relative to the first direction, the second hinge point is located on the rear side of the center line connecting the first hinge point and the rotation fulcrum of the driving swing arm;

[0024] When the driving swing arm is in the unlocked position, relative to the second direction, the second hinge point is located in front of a line connecting the centers of the first hinge point and the rotation fulcrum of the driving swing arm.

[0025] The lock pin driving mechanism provided by the present invention may also have the following features:

[0026] The force exerted by the elastic force exerting member on the driving swing arm when it is in the locked position is greater than the force exerted by the elastic force exerting member on the driving swing arm when it is in the unlocked position.

[0027] The lock pin driving mechanism provided by the present invention may also have the following features:

[0028] The blocking component is further used to block the driving swing arm in the first direction when the driving swing arm rotates to the locked position, and includes a blocking rod provided on the hatch, the blocking rod is provided with a blocking portion, and the circumferential edge of the driving swing arm is provided with a blocking matching portion for matching with the blocking portion.

[0029] The blocking rod has a first position in which the blocking portion abuts against the blocking matching portion and a second position in which the blocking portion and the blocking matching portion are disengaged from each other, and is movable between the first position and the second position.

[0030] When the blocking portion abuts against the blocking matching portion, the blocking portion blocks the driving swing arm member in the first direction and the second direction.

[0031] The lock pin driving mechanism provided by the present invention may also have the following features:

[0032] Among them, one of the blocking portion and the blocking matching portion is a convex portion, and the other is a concave portion adapted to the convex portion, the convex portion is a convex arc surface, and the concave portion is a concave arc surface.

[0033] The lock pin driving mechanism provided by the present invention may also have the following features:

[0034] The blocking component further includes a locking structure for locking the blocking rod in the first position or the second position, comprising a support sleeve, an elastic telescopic member, and two abutting recesses;

[0035] The support sleeve is fixed on the hatch, and one end of the blocking rod is movably extended into the support sleeve;

[0036] The elastic telescopic member is arranged in the blocking rod, and two abutting recesses are arranged on the side wall of the supporting sleeve. The elastic telescopic member has a telescopic convex portion, which is partially spherical or spherical, and the abutting recess matches the telescopic convex portion.

[0037] When the blocking rod moves to the first position, the telescopic protrusion partially extends into one of the abutting recesses to form an abutting fit.

[0038] When the blocking lever moves to the second position, the telescopic protrusion partially extends into the other abutting recess to form an abutting fit.

[0039] The present invention provides a hatch door lock having the following features:

[0040] a lock pin movably disposed on the hatch;

[0041] A keyhole is provided on a door frame corresponding to the hatch;

[0042] a locking pin drive mechanism; and

[0043] The operating mechanism is provided on the driving swing arm and is used to drive the driving swing arm to rotate between the locking position and the unlocking position.

[0044] Wherein, the lock pin driving mechanism is the lock pin driving mechanism as described above.

[0045] The hatch door lock provided by the present invention may also have the following features:

[0046] Among them, the operating mechanism includes:

[0047] A handle shaft is rotatably supported on the door, the driving swing arm is fixed on the handle shaft, and the handle shaft constitutes a rotation fulcrum of the driving swing arm; and

[0048] The handle has one end fixed to the end of the handle shaft and the other end provided with a gripping portion for operation by a person.

[0049] Therefore, the present invention has the following advantages compared with the prior art:

[0050] The latch mechanism is adapted to engage the latching member and engage the latching member to engage the latching member, and the latching member is adapted to engage the latching member and engage the latching member to engage the latching member, thereby releasing the latch from the locking member and allowing the latching member to be released from the locking member. When the door is unlocked, the locking pin is automatically released from the locking hole, and the latch is released when the latch is in the locked position. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 1 is a schematic diagram of the installation structure of a hatch lock according to an embodiment of the present invention;

[0052] Figure 2 1 is a schematic diagram of the three-dimensional structure of a hatch lock according to an embodiment of the present invention;

[0053] Figure 3 2 is a schematic diagram of the three-dimensional structure of the lock pin driving mechanism in an embodiment of the present invention;

[0054] Figure 4 2 is a schematic diagram of the three-dimensional structure of the limiting component in an embodiment of the present invention;

[0055] Figure 5 is a schematic diagram of the main structure of the driving swing arm member in the embodiment of the present invention when it is in its locked position;

[0056] Figure 6is a schematic diagram of the three-dimensional structure of the blocking component in an embodiment of the present invention;

[0057] Figure 7 is a schematic cross-sectional view of a locking structure in an embodiment of the present invention;

[0058] Figure 8 It is a schematic diagram of the three-dimensional structure of the operating mechanism in an embodiment of the present invention.

[0059] The reference numerals in the drawings are as follows: door lock 100; door 100a; door frame 100b; backing plate 100c; lock pin 10; lock hole 20;

[0060] Lock pin driving mechanism 30; driving swing arm 31; blocking fitting portion 311; driving rod 32; elastic force applying member 33; blocking member 34; blocking rod 341; blocking portion 341a; mounting hole 341b; locking structure 342; supporting sleeve 342a; elastic telescopic member 342b; spring 421b; steel ball 422b; abutting recess 342c; limiting member 35; pull rod 351; movable limiting portion 351a; movable rod 352; travel groove 352a; constricted portion 352b;

[0061] Operating mechanism 40; handle shaft 41; handle 42. DETAILED DESCRIPTION

[0062] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the lock pin drive mechanism and the hatch lock of the present invention are described in detail below with reference to the embodiments and drawings.

[0063] This embodiment provides a lock pin drive mechanism and a cabin door lock with a self-locking function that can ensure the reliability of locking. The mechanism is applied to a maintenance cabin door, the bottom end of which is hinged to the aircraft fuselage, and the cabin door lock is installed on one side of the inner surface of the top end of the cabin door and the corresponding door frame.

[0064] Figure 1 1 is a schematic diagram of the installation structure of a hatch lock according to an embodiment of the present invention; Figure 2 2 is a schematic diagram of the three-dimensional structure of a hatch lock in an embodiment of the present invention.

[0065] like Figures 1 to 2 As shown, the hatch door lock 100 of this embodiment includes a lock pin 10, a lock hole 20, a lock pin drive mechanism 30, and an operating mechanism 40. The lock pin 10 is movably mounted on the hatch door 100a. The lock hole 20 is disposed on the door frame 100b corresponding to the hatch door 100a. The lock pin drive mechanism 30 is drivingly connected to the lock pin 10 to drive the lock pin 10 to move, thereby unlocking or locking the hatch door lock 100. The operating mechanism 40 is mounted on the drive swing arm 31 and is configured to rotate the drive swing arm 31 between a locked position and an unlocked position.

[0066] In this embodiment, there are two lock pins 10 and two lock holes 20, thereby forming two locking points at the left and right ends of the hatch 100a.

[0067] In this embodiment, the lock hole 20 is provided in a lock seat, and the lock seat is fixed to the inner side surface of the door frame 100b.

[0068] Figure 3 It is a schematic diagram of the three-dimensional structure of the lock pin driving mechanism in an embodiment of the present invention.

[0069] like Figure 3 As shown, the lock pin drive mechanism 30 includes a drive swing arm 31, a drive rod 32, an elastic force member 33, a blocking member 34, and a stop member 35. The drive swing arm 31 is rotatably supported on the door 100a and has a locked position, in which the lock pin 10 is inserted into the lock hole 20 in the door frame 100b, and an unlocked position, in which the lock pin 10 is removed from the lock hole 20. The drive rod 32 connects the drive swing arm 31 and the lock pin 10. One end is hinged to the first swinging end of the drive swing arm 31, and the other end is hinged to the unlocking end of the lock pin 10. The elastic force member 33 is configured to cause the drive swing arm 31 to rotate in a first direction or a second direction. The first direction is the direction in which the drive swing arm 31 rotates from the locked position to the unlocked position, and the second direction is the direction in which the drive swing arm 31 rotates from the unlocked position to the locked position. The blocking member 34 is configured to block the drive swing arm 31 in the second direction at least when it rotates to the locked position. The limiting component 35 is used to block the swing arm 31 in the first direction when the swing arm 31 is driven to rotate to the unlocking position. Figure 3 The direction indicated by D is the first direction, and the opposite direction is the second direction.

[0070] It can be understood that when the driving swing arm 31 is rotated to the locked position, the lock pin 10 can be driven to be inserted into the lock hole 20 on the door frame 100b, thereby locking the hatch lock 100. When the driving swing arm 31 is rotated to the unlocked position, the lock pin 10 can be driven to be pulled out from the lock hole 20, thereby unlocking the hatch lock 100. When the driving swing arm 31 is in the locked position, the elastic force applying member 33 applies force to the driving swing arm 31, thereby causing the driving swing arm 31 to have a tendency to rotate in the second direction. At the same time, the blocking member 34 applies force to the driving swing arm 31 in the second direction. 1 forms an obstruction, thereby enabling the driving swing arm 31 to be maintained in the locked position. When the driving swing arm 31 is in the unlocked position, the elastic force applying member 33 applies force to the driving swing arm 31, thereby causing the driving swing arm 31 to have a tendency to rotate along the first direction. At the same time, the limiting member 35 forms an obstruction on the driving swing arm 31 in the first direction, thereby enabling the driving swing arm 31 to be maintained in the unlocked position. As a result, the driving swing arm 31 can be self-locked in the locked position and the unlocked position, thereby enabling the lock pin 10 to be self-locked, thereby ensuring the reliability of the locking and facilitating the opening of the hatch 100a.

[0071] In this embodiment, there are two driving rods 32 , and the driving swing arm 31 has three swing ends, two of which are respectively connected to the two driving rods 32 , and the other swing end is connected to the limiting component 35 .

[0072] In this embodiment, the lock pin driving mechanism 30 is mounted on the backing plate 100c, and the backing plate 100c is fixed on the hatch 100a. Specifically, the driving swing arm 31 is rotatably supported on the backing plate 100c.

[0073] Figure 4 3D is a schematic diagram of the three-dimensional structure of the limiting component in an embodiment of the present invention.

[0074] like Figures 3 and 4 As shown, the limiting component 35 includes a pull rod 351 and a movable rod 352. The first end of the pull rod 351 is indirectly or directly hinged to the door 100a to form a first hinge point, and the second end has a movable limiting portion 351a. The first end of the movable rod 352 is connected to the second end of the pull rod 351, and the second end is hinged to the second swing end of the driving swing arm 31 to form a second hinge point. The movable rod 352 is provided with a travel groove 352a for sliding the movable limiting portion 351a. The travel groove 352a extends to the first end of the movable rod 352 and is provided with a constricted portion 352b for abutting and cooperating with the movable limiting portion 351a.

[0075] It can be understood that when the driving swing arm 31 rotates along the first direction, it can drive the movable rod 352 to move synchronously, so that the movable limit portion 351a slides in the travel groove 352a. When the movable limit portion 351a moves to abut against the neck portion 352b, the driving swing arm 31 cannot continue to rotate along the first direction. At this time, the driving swing arm 31 is in the unlocked position, thereby being able to form a block in the first direction when the driving swing arm 31 rotates to the unlocked position, so as to cooperate with the elastic force applying member 33 to realize the self-locking of the driving swing arm 31 when it is in the unlocked position.

[0076] In this embodiment, the second hinge point is located between the first hinge point and the rotation fulcrum of the driving swing arm member 31 .

[0077] like Figure 4 As shown, the elastic force member 33 is a compression spring, which is arranged in the travel groove 352a, with one end abutting against the movement limiting portion 351a and the other end abutting against the end wall of the travel groove 352a.

[0078] It can be understood that when the driving swing arm 31 is in the locked position and the unlocked position, the elastic force-applying member 33 is in a compressed force-storage state, thereby causing the driving swing arm 31 to have a tendency to rotate in the second direction when in the locked position and to have a tendency to rotate in the first direction when in the unlocked position.

[0079] Figure 5 2 is a schematic diagram of the main structure of the driving swing arm member in the embodiment of the present invention when it is in the locked position.

[0080] like Figure 5 As shown, when the driving swing arm 31 is in the locked position, relative to the first direction, the second hinge point is located behind the line connecting the centers of the first hinge point and the rotation fulcrum of the driving swing arm 31. When the driving swing arm 31 is in the unlocked position, relative to the second direction, the second hinge point is located in front of the line connecting the centers of the first hinge point and the rotation fulcrum of the driving swing arm 31.

[0081] When the locking cam 31 is in the unlocked position, the elastic force applying member 33 can apply force to the driving swing arm 31 through the movable rod 352, so that the driving swing arm 31 has a tendency to rotate in the second direction. In addition, the blocking member 34 blocks the driving swing arm 31 in the second direction, so that the driving swing arm 31 can be maintained in the locked position, thereby realizing self-locking of the driving swing arm 31 in the locked position and ensuring the reliability of the locking. When the driving swing arm 31 is in the unlocked position, the elastic force applying member 33 can apply force to the driving swing arm 31 through the movable rod 352, so that the driving swing arm 31 has a tendency to rotate in the first direction. In addition, the limiting member 35 blocks the driving swing arm 31 in the first direction, thereby making it possible to maintain the driving swing arm 31 in the unlocked position, thereby realizing self-locking of the driving swing arm 31 in the unlocked position, making it convenient to open the hatch 100a.

[0082] like Figure 5 As shown, the force exerted by the elastic force applying member 33 on the driving swing arm 31 when it is in the locked position is greater than the force exerted by the elastic force applying member 33 on the driving swing arm 31 when it is in the unlocked position.

[0083] It can be understood that making the driving swing arm 31 have a larger self-locking force when it is in the locked position is more conducive to ensuring the reliability of the locking. In addition, making the driving swing arm 31 have a smaller self-locking force when it is in the unlocked position can minimize the operating force during subsequent locking.

[0084] In this embodiment, the compression amount of the elastic force-applying member 33 when the driving swing arm 31 is in the locked position is greater than the compression amount of the elastic force-applying member 33 when the driving swing arm 31 is in the unlocked position, so that the driving swing arm 31 has a larger self-locking force when it is in the locked position and has a smaller self-locking force when it is in the unlocked position.

[0085] Figure 6 3D is a schematic diagram of the three-dimensional structure of the blocking component in an embodiment of the present invention.

[0086] like Figure 6 As shown, the blocking component 34 is further configured to block the driving swing arm 31 in a first direction when the driving swing arm 31 rotates to the locked position, and includes a blocking rod 341 disposed on the hatch 100a. The blocking rod 341 is provided with a blocking portion 341a, and a blocking engagement portion 311 is provided on the circumferential edge of the driving swing arm 31 for engaging with the blocking portion 341a. The blocking rod 341 is movable between a first position in which the blocking portion 341a abuts the blocking engagement portion 311, and a second position in which the blocking portion 341a disengages from the blocking engagement portion 311.

[0087] It can be understood that when the driving swing arm 31 rotates to the locked position, the blocking rod 341 is moved to the first position, so that the blocking portion 341a is abutted and matched with the blocking matching portion 311, and then the blocking portion 341a can form a block to the driving swing arm 31 in the first direction and the second direction. Therefore, it can not only block the driving swing arm 31 in the second direction when it is rotated to the locked position, so as to cooperate with the elastic force-applying member 33 to realize the self-locking of the driving swing arm 31 in the locked position, but also block the driving swing arm 31 in the first direction when it is rotated to the locked position, so that the driving swing arm 31 can be effectively locked in the locked position, and the reliability of the locking can be further ensured.

[0088] like Figure 6 As shown, one of the blocking portion 341a and the blocking matching portion 311 is a convex portion, and the other is a concave portion matched with the convex portion. The convex portion is a convex arc surface, and the concave portion is a concave arc surface.

[0089] It can be understood that when the blocking portion 341a abuts against the blocking fitting portion 311, the driving swing arm 31 cannot rotate, thereby blocking the driving swing arm 31 in the first direction and the second direction.

[0090] In this embodiment, the blocking portion 341a is a convex portion, and the blocking matching portion 311 is a concave portion. Of course, in other alternative embodiments, the blocking portion 341a can also be a concave portion, and the blocking matching portion 311 can be a convex portion.

[0091] Figure 7 2 is a schematic cross-sectional view of the locking structure in an embodiment of the present invention.

[0092] like Figure 7 As shown, the blocking component 34 also includes a locking structure 342, which is used to lock the blocking rod 341 in the first position or the second position. The structure includes a support sleeve 342a, an elastic and resilient member 342b, and two abutment recesses 342c. The support sleeve 342a is fixed to the cabin door 100a, and one end of the blocking rod 341 can be movably extended into the support sleeve 342a. The elastic and resilient member 342b is disposed within the blocking rod 341, and the two abutment recesses 342c are disposed on the sidewalls of the support sleeve 342a. The elastic and resilient member 342b has a telescopic protrusion that is partially spherical or spherical, and the abutment recesses 342c match the telescopic protrusion.

[0093] When the blocking rod 341 moves to the first position or the second position, the telescopic protrusion can extend into the corresponding abutment recess 342c to form an abutment fit therewith, thereby locking the blocking rod 341 in the current position to prevent it from moving abnormally, so that the blocking rod 341 can be stably maintained in the first position or the second position, and at the same time, it can prevent the blocking rod 341 from shifting due to human touch or vibration during flight. In addition, under the action of external force, the telescopic protrusion can quickly disengage from the abutment recess 342c, and the required external force is small, so that when switching the position, the operator only needs to apply force to move the blocking rod 341 to disengage the telescopic protrusion from the abutment recess 342c, thereby facilitating the position switching of the blocking rod 341.

[0094] In this embodiment, the blocking rod 341 is provided with a mounting hole 341b extending radially thereof, the outer end of the mounting hole 341b is open, and the elastic telescopic member 342b is arranged in the mounting hole 341b, which includes a spring 421b and a steel ball 422b, and the steel ball 422b is located at the opening of the mounting hole 341b. The spring 421b is located in the mounting hole 341b, one end of which abuts against the bottom of the mounting hole 341b, and the other end abuts against the surface of the steel ball 422b, and the steel ball 422b constitutes a telescopic protrusion.

[0095] In this embodiment, the side wall of the support sleeve 342 a has two through holes spaced apart from each other, the through holes forming the abutting recess 342 c , and the diameter of the through holes is smaller than the diameter of the steel ball 422 b .

[0096] In this embodiment, the support sleeve 342a is fixed to the backing plate 100c, thereby being fixed to the hatch 100a.

[0097] Figure 8 It is a schematic diagram of the three-dimensional structure of the operating mechanism in an embodiment of the present invention.

[0098] like Figure 8 As shown, the operating mechanism 40 includes a handle shaft 41 and a handle 42. The handle shaft 41 is rotatably supported on the door 100a. The driving swing arm 31 is fixed to the handle shaft 41, and the handle shaft 41 serves as the rotation fulcrum of the driving swing arm 31. One end of the handle 42 is fixed to the end of the handle shaft 41, and the other end is provided with a grip for operation by a person.

[0099] It can be understood that when the operator acts on the gripping portion to rotate the handle 42 , the handle shaft 41 can be used to drive the swing arm 31 to rotate between the locking position and the unlocking position.

[0100] Functions and Effects of the Embodiments

[0101] The latch mechanism is adapted to engage the latching member and engage the latching member to engage the latching member, and the latching member is adapted to engage the latching member and engage the latching member to engage the latching member, thereby releasing the latch from the locking member and allowing the latching member to be released from the locking member. When the door is unlocked, the locking pin is automatically released from the locking hole, and the latch is released when the latch is in the locked position.

[0102] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lock pin drive mechanism, disposed in a hatch lock, drivingly connected to the lock pin to drive the lock pin to move, thereby unlocking or locking the hatch lock, characterized in that: include: A driving swing arm (31) is rotatably supported on the door, has a locking position for inserting the lock pin into a lock hole on the door frame, and an unlocking position for pulling the lock pin out of the lock hole, and can rotate between the locking position and the unlocking position; A driving rod (32) is used to connect the driving swing arm (31) and the locking pin, one end of which is hinged to the first swing end of the driving swing arm (31) and the other end of which is hinged to the non-locking end of the locking pin; an elastic force applying member (33) for causing the driving swing arm member (31) to have a tendency to rotate in a first direction or a second direction, wherein the first direction is a direction in which the driving swing arm member (31) rotates from the locked position to the unlocked position, and the second direction is a direction in which the driving swing arm member (31) rotates from the unlocked position to the locked position; a blocking component (34), at least for blocking the driving swing arm (31) in the second direction when the driving swing arm (31) rotates to the locking position; and A limiting component (35) is used to block the driving swing arm (31) in the first direction when the driving swing arm (31) rotates to the unlocking position. When the driving swing arm (31) is in the locking position, the elastic force applying member (33) applies force to the driving swing arm (31), thereby causing it to have a tendency to rotate along the second direction. When the driving swing arm (31) is in the unlocking position, the elastic force applying member (33) applies force to the driving swing arm (31), thereby causing it to have a tendency to rotate along the first direction; The blocking component (34) is further used to block the driving swing arm (31) in the first direction when the driving swing arm (31) rotates to the locking position, and includes a blocking rod (341) provided on the cabin door, a blocking portion (341a) provided on the blocking rod (341), and a blocking matching portion (311) for matching with the blocking portion (341a) provided on the circumferential edge of the driving swing arm (31). The blocking rod (341) has a first position in which the blocking portion (341a) abuts against the blocking matching portion (311) and a second position in which the blocking portion (341a) is disengaged from the blocking matching portion (311), and is movable between the first position and the second position. When the blocking portion (341a) abuts against the blocking matching portion (311), the blocking portion (341a) blocks the driving swing arm (31) in the first direction and the second direction; Wherein, one of the blocking portion (341a) and the blocking matching portion (311) is a convex portion, and the other is a concave portion adapted to the convex portion, the convex portion is a convex arc surface, and the concave portion is a concave arc surface; The blocking component (34) further comprises a locking structure (342) for locking the blocking rod (341) at the first position or the second position, comprising a support sleeve (342a), an elastic telescopic member (342b) and two abutting recesses (342c); The support sleeve (342a) is fixed on the cabin door, and one end of the blocking rod (341) is movably extended into the support sleeve (342a); The elastic telescopic member (342b) is arranged in the blocking rod (341), and the two abutting recesses (342c) are arranged on the side wall of the supporting sleeve (342a). The elastic telescopic member (342b) has a telescopic convex portion, and the telescopic convex portion is partially spherical or spherical. The abutting recesses (342c) match the telescopic convex portion. When the blocking rod (341) moves to the first position, the telescopic protrusion partially extends into one of the abutting recesses (342c) to form an abutting fit. When the blocking rod (341) moves to the second position, the telescopic protrusion partially extends into the other abutting recess (342c) to form an abutting fit.

2. The lock pin driving mechanism according to claim 1, Its characteristics are: Wherein, the limiting component (35) includes: A pull rod (351), a first end of which is indirectly or directly hinged to the door to form a first hinge point, and a second end of which has a movement limiting portion (351a); and The movable rod (352) has a first end that is sleeved with the second end of the pull rod (351), and a second end that is hinged with the second swing end of the driving swing arm (31) to form a second hinge point. The movable rod (352) is provided with a travel groove (352a) for the movable limiting portion (351a) to slide. The travel groove (352a) extends to the first end of the movable rod (352) and is provided with a constricted portion (352b) for abutting and cooperating with the movable limiting portion (351a). When the movement limiting portion (351a) abuts against the constricted portion (352b), the driving swing arm (31) is in the unlocking position.

3. The lock pin driving mechanism according to claim 2, wherein: in, The elastic force applying member (33) is a compression spring, which is arranged in the travel groove (352a), with one end abutting against the movement limiting portion (351a) and the other end abutting against the end wall of the travel groove (352a).

4. The lock pin driving mechanism according to claim 2 or 3, Its characteristics are: Wherein, when the driving swing arm (31) is in the locked position, relative to the first direction, the second hinge point is located on the rear side of a line connecting the first hinge point and the center of the rotation fulcrum of the driving swing arm (31); When the driving swing arm (31) is in the unlocking position, relative to the second direction, the second hinge point is located in front of a center line connecting the first hinge point and the rotation fulcrum of the driving swing arm (31).

5. The lock pin driving mechanism according to any one of claims 1 to 3, characterized in that: in, The force applied by the elastic force applying member (33) to the driving swing arm member (31) when it is in the locked position is greater than the force applied by the elastic force applying member (33) to the driving swing arm member (31) when it is in the unlocked position.

6. A hatch lock, characterized in that: include: a lock pin (10) movably arranged on the hatch (100a); A lock hole (20) is provided on a door frame (100b) corresponding to the cabin door (100a); Lock pin drive mechanism (30); as well as An operating mechanism (40) is provided on the driving swing arm (31) and is used to drive the driving swing arm (31) to rotate between the locking position and the unlocking position. Wherein, the lock pin driving mechanism (30) is the lock pin driving mechanism according to any one of claims 1 to 5.

7. The hatch lock according to claim 6, Its characteristics are: Wherein, the operating mechanism (40) comprises: A handle shaft (41) is rotatably supported on the cabin door (100a), the driving swing arm (31) is fixed on the handle shaft (41), and the handle shaft (41) constitutes a rotation fulcrum of the driving swing arm (31); and The handle (42) has one end fixed to the end of the handle shaft (41) and the other end provided with a gripping portion for operation by a person.

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