Top hatch lock for armored vehicles

Abstract

The present invention discloses a top hatch lock for armored vehicles, aiming to provide a top hatch lock that is simple to operate, reliable in locking, and has a high load capacity. The invention is achieved through the following technical solutions: in the naturally locked state, the lock tongue extends, and the switch pressing claw is perpendicular to the direction of extension and retraction of the lock tongue and abuts against the inner bottom ring of a rectangular ring, causing the lock tongue to remain in the naturally locked position. In the unlocked state, after the top hatch door is closed and the handle is released, the lock tongue extends due to the elastic force of a return spring and rebounds back into the lock housing and the top hatch door side body lock head hole. The positioning ring achieves self-locking through the circumferential positioning groove and the elastic positioning pin in the rearward π-shaped guide box cover, forming an interlocking between the lock head inclined surface on the lock tongue and the end surface of the top hatch door side body lock head hole. The handle drives the positioning ring and the switch pressing claw to rotate clockwise or counterclockwise via the rectangular lock shaft, controlling the elastic positioning pin to constrain or release the positioning ring locking groove and the rectangular ring inner cutaway surface to constrain or release the switch pressing claw.

Description

Technical Field

[0001] The present invention relates to a locking device for use on a top hatch of an armored vehicle, and more particularly to a novel mechanical locking device capable of withstanding heavy loads. Background Art

[0002] The upper and lower locks inside the armored vehicle operate as follows: when the inner handle is turned counterclockwise, the inner handle rotates the outer lock disc, which in turn drives the upper and lower linkages, causing the upper and lower lock shafts to move rightward, locking the door. When the inner handle is turned clockwise, the inner handle rotates the outer lock disc, which in turn drives the upper and lower linkages, causing the upper and lower lock shafts to move leftward, unlocking the door. The middle lock operates as follows: after closing the door, pressing the inner door lock handle down moves the lock tongue 2 to the right via the linkage, locking the door. Lifting the inner door lock handle moves the lock tongue 2 to the left via the linkage, unlocking the door. For the exterior door lock, a custom sleeve handle is used to rotate the square shaft, which rotates the outer lock disc, which in turn drives the upper and lower linkages, causing the upper and lower lock shafts to move leftward (rightward), locking the upper and lower lock shafts. After closing the middle door, the middle lock can be locked or unlocked using a manual key. Furthermore, the cabin features an easy-open / easy-close feature that securely seals the top hatch. Currently, existing door locks for armored vehicles are weak, have short lifespans, and are easily damaged, failing to meet the needs of users for normal operations. Furthermore, the structural design is irrational, with the safety lock restricting the lock rod. When the safety lock is closed, the lock tongue cannot move forward or backward. Improper operation can easily damage the safety lock and the lock handle shaft. Most hatches open by rotating around a hinge, similar to the hinges on civilian doors. These, referred to as "flip-type," often utilize hatches connected by two short hinges. It's worth noting that due to the large footprint occupied by a 180-degree opening, most hatches do not open fully, but instead rotate at an obtuse angle to reveal the hatch, potentially interfering with other equipment and interfaces and making it difficult to close. Therefore, some hatches rotate upward a certain distance and then sideways to fully expose the hatch. The hatch then rotates around a pillar, referred to as "rotating-type." Whether flipping or rotating, the opening trajectory and stopping position should not exceed the vehicle's length and width. Otherwise, in confined spaces, such as during transportation or in complex terrain, the hatch may become inoperable or easily scratched, deformed, or damaged after opening. Although this probability is small, it needs to be considered. As we all know, the roof is the most vulnerable point of all armored vehicles, even the most formidable tanks. With increasing user demands and the continuous improvement of the overall performance of armored vehicles, the requirements for armored vehicle structures and accessories are also becoming increasingly stringent. Door locks, as a core component of armored vehicle safety, play a crucial role in vehicle safety and proper operation. The hatch lock secures the top hatch to the vehicle body, preventing it from being lifted. It primarily consists of a lock body and a lock pin, mounted on the hatch and vehicle body, respectively. The lock body comprises a plate that rotates within the lock housing. One side of the plate features a U-shaped slot for the lock pin to engage, and a positioning claw that pivots on the lock housing. A return spring is installed between the positioning claw and the lock housing. On the other side, a column is installed, and a return spring is installed between the column and the lock housing. The return spring tensions the plate, positioning it so that the lock pin engages the U-shaped slot.During the locking process of the lock pin and the lock body, the lock pin is inserted into the U-shaped slot and squeezes the side wall of the U-shaped slot, pushing the card plate to overcome the force of the return spring and rotate. At the same time, the card plate squeezes the positioning claw, causing the positioning claw to rotate against the tension of the return spring. When the card plate is rotated into place to lock the lock pin, the positioning claw cooperates with the step and the positioning step on the card plate to stop. After the lock pin is inserted into the U-shaped slot, the card plate overcomes the force of the return spring and rotates a certain angle to lock the lock pin. In practice, if the force used to close the hatch cover is insufficient, the card plate will not rotate into place and the lock pin will not be locked, or the hatch cover lock may be opened for some reason. At this time, the driver will not be able to know the locking status of the top hatch cover lock.

[0003] To prevent water intrusion and toxic gas ingress during naval or land operations, armored vehicle top hatches are typically sealed by mechanical locking devices. A common mechanical lock is a handle lock, consisting of a handle head, elbow, handle sleeve, fixing pin, locking strip, and fixing block. As a rotary actuator, a top hatch is used for emergency escape or overhead operations. A common top hatch handle lock for armored vehicles consists of a handle that also serves as the latch mechanism, a door cover, hinges, a locking mechanism, a sealing strip base, a lock head hole, and a lock cylinder, all connected by a rotating mechanism to drive the latch in the direction of the door leaf. This type of mechanical locking is cumbersome and requires a certain level of operator proficiency, which presents limitations in meeting emergency wartime requirements. Due to the relatively complex structure of armored vehicle top hatches and the varying reliability of each component, different redundant structural designs can lead to completely different reliability results. This is particularly true for armored vehicle top hatches with mechanical locking devices. Summary of the Invention

[0004] The purpose of the present invention is to address the problems existing in the prior art and provide a handle lock that is simple to operate, reliable in locking, and has a large load-bearing capacity, so as to solve the problems that conventional handle locks are cumbersome to operate and conventional door lock structures cannot meet the large load requirements of armored vehicle roof compartments.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a top hatch lock for an armored vehicle, comprising: a lock housing base 1 assembled on the top hatch door, a lock tongue 2 inserted from a lateral lock hole between the lock housing base 1 and the lock head hole of the top hatch side body for locking, a return spring 14 arranged on the inner side of the lock tongue 2 and positioned by a spring column 3, and a rectangular lock shaft 4 fixedly connected to the handle 5 in a positive vertical direction. The lock tongue 2 is inserted into the lock cavity of the lock housing base 1 from the lock head hole. The telescopic end of the lock head rectangular body is formed with a trapezoidal body with a rectangular transition connection and a rectangular ring 15 forming a step surface with the trapezoidal body, as well as a return spring groove connected to the rectangular ring 15; the fixed end of the rectangular lock shaft 4 is formed with a stepped shaft body, which is fastened to the lock cavity base plate of the lock housing base 1 by a locking nut 8, and is connected to the switch pressure claw 7 through the rectangular hole in the center of the positioning ring 13. In the naturally locked state, the lock tongue 2 is extended, the handle 5 is parallel to the lock tongue 2 in the same direction, the switch pressure claw 7 is perpendicular to the telescopic direction of the lock tongue 2, and is tightly attached to the inner bottom ring of the rectangular ring 15, and the lock tongue 2 stays in the naturally locked position. When the top hatch door is closed and the handle 5 is released, the lock tongue 2 extends with the elastic force of the return spring 14 and rebounds into the lock head hole of the lock shell base 1 and the top hatch door side body. The positioning ring 13 is self-locking through the positioning groove on the circumference and the elastic positioning pin 9 in the rear π-shaped guide box cover 6, forming an interlocking between the lock head inclined surface on the lock tongue 2 and the end face of the lock head hole of the corresponding top hatch door side body. The handle 5 drives the positioning ring 13 and the switch pressure claw 7 to rotate clockwise or counterclockwise through the rectangular lock shaft 4, controlling the elastic positioning pin 9 to constrain or separate the locking positioning groove of the positioning ring 13 and the inner side cut angle of the rectangular ring cut corner 16 of the rectangular ring 15 to face the switch pressure claw 7.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] Simple Operation. The present invention utilizes a rectangular lock head with a trapezoidal body with a rectangular transition connection and a rectangular ring 15 forming a stepped surface with the trapezoidal body, as well as a π-shaped guide box cover 6 connected to the rectangular ring 15, at the telescopic end. A rectangular lock shaft 4 with a stepped shaft body at the fixed end is fastened to the lock chamber base plate of the lock housing 1 via a locking nut 8 on the stepped shaft body and connected to a switch pressure claw 7 via a rectangular hole in a positioning ring 13. The handle 5 drives the rectangular lock shaft 4, the switch pressure claw 7, and the positioning ring 13, which are fixed to the handle 5, to rotate clockwise toward the π-shaped guide box cover 6, which is fixed to the lock housing 1. The structure is simple. The transmission between a few simple mechanical parts realizes the unlocking function of the top compartment lock, effectively solving the cumbersome operation of conventional handle locks and overcoming the relatively cumbersome mechanical locking operation. Both unlocking and locking actions are achieved through a single handle 5, making operation convenient. This solves the problems of cumbersome handle lock operation and the high level of proficiency required.

[0008] Reliable locking. The present invention utilizes a method in which, after the top hatch door is closed and the handle 5 is released in the unlocked state, the lock tongue 2 extends due to the elastic force of the return spring 14 and rebounds back into the lock housing base 1 and the top hatch door side body lock hole. The positioning ring 13, through the circumferential positioning groove, aligns with the elastic positioning pin 9 in the rearward π-shaped guide box cover 6 to achieve self-locking. The lock head inclined surface on the lock tongue 2 interlocks with the end surface of the corresponding top hatch door side body lock hole. The handle 5 drives the rectangular lock shaft 4, the switch pressure claw 7, and the positioning ring 13 fixedly connected to the handle 5 to rotate counterclockwise toward the rectangular ring cut angle 16 in the direction of the spring column 3, thereby achieving the locking function of the top hatch lock. A rectangular ring 15 and a π-shaped guide box cover 6 with trapezoidal connections are made in the lock tongue 2, and the reset spring 14 is restricted in several directions by the spring column 3, the rectangular ring 15 and the bottom plate to ensure that the reset spring 14 can be normally reset when the top hatch is subjected to a large load; a rectangular hole is made on the positioning ring 13 and the switch pressure claw 7 to cooperate with the rectangular lock shaft 4 for assembly, and the switch pressure claw 7 and the positioning ring 13 are concentric with the rectangular lock shaft 4 after being assembled through the rectangular hole. The three parts of the rectangular lock shaft 4, the positioning ring 13 and the switch pressure claw fixedly connected to the handle 5 are not connected by a spring but by a concentric axis movable connection, ensuring that when the top hatch is subjected to a large load, the handle 5 drives the rectangular lock shaft 4, the switch pressure claw 7 and the positioning ring 13 fixedly connected to the handle 5 to rotate normally. The carrying handle 5 is limited and locked at the same time by assembling the ring groove of the C-shaped retaining ring 11 and the locking nut 8, ensuring that the carrying handle 5 does not loosen when the top hatch is subjected to a large load; the conical surface of the needle end of the elastic positioning pin 9 is stuck in a locking positioning groove or a locking positioning groove formed on the positioning ring 13, and the elastic positioning pin 9 and the positioning spring 10 are assembled and fixedly connected to the π-shaped guide box cover 6 on the lock shell base 1, ensuring that the elastic positioning pin 9 can be normally positioned and the positioning spring 10 does not fall out when the top hatch is subjected to a large load.

[0009] Large load-bearing capacity. The present invention adopts a positioning ring 13 to achieve self-locking through the positioning groove on the circumference and the elastic positioning pin 9 in the rear π-shaped guide box cover 6, forming a lock head inclined surface on the lock tongue 2 and interlocking with the end face of the corresponding lock head hole on the side body of the top hatch door. The handle 5 drives the positioning ring 13 and the switch pressure claw 7 to rotate clockwise or counterclockwise through the rectangular lock shaft 4, controlling the elastic positioning pin 9 to constrain or separate the locking groove of the positioning ring 13 and the inner side cut angle 16 of the rectangular ring 15 to constrain or separate the switch pressure claw 7, thereby achieving reliable locking and completing the locking function of the lock tongue 2. When the lock tongue 2 is extended and locked, it cannot move toward the π-shaped guide box cover 6 under the action of external force, so it can withstand high-load top hatch door locks, effectively solving the problem that conventional door lock structures cannot meet high load requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the armored vehicle top hatch lock (open cover) state of the present invention.

[0011] Figure 2 yes Figure 1 main view.

[0012] Figure 3 yes Figure 2 AA cross-section view.

[0013] Figure 4 yes Figure 1 3D schematic of the lock tongue.

[0014] Figure 5 yes Figure 1 Front view of the locating ring.

[0015] Figure 6 yes Figure 1 Schematic diagram of the unlocked state.

[0016] Figure 7 Figure 1 Schematic diagram of the locked state.

[0017] In the figure: 1 lock housing, 2 lock tongue, 3 spring column, 4 rectangular lock shaft, 5 handle, 6π-shaped guide box cover, 7 switch pressure claw, 8 locking nut, 9 elastic positioning pin, 10 positioning spring, 11C-type retaining spring, 12 adjusting gasket, 13 positioning ring, 14 return spring, 15 rectangular ring, 16 rectangular ring cut corners, 17 locking positioning slot, 18 locking positioning slot.

[0018] The present invention is further described below with reference to the accompanying drawings and examples, but the present invention is not limited to the scope of the embodiments described. All these concepts should be regarded as the content disclosed by this technology and the scope of protection of the present invention. DETAILED DESCRIPTION

[0019] See Figures 1 to 5In the preferred embodiment described below, a top hatch lock for an armored vehicle comprises: a lock housing 1 assembled on the top hatch door, a lock tongue 2 inserted from a side lock hole between the lock housing 1 and the top hatch door side body lock head hole for locking, a return spring 14 disposed on the inner side of the lock tongue 2 and positioned by a spring column 3, and a rectangular lock shaft 4 fixedly connected in a forward and vertical direction to a handle 5. The lock tongue 2 is inserted into the lock cavity of the lock housing base 1 from the lock head hole. The telescopic end of the lock head rectangular body is formed with a trapezoidal body with a rectangular transition connection and a rectangular ring 15 forming a step surface with the trapezoidal body, as well as a return spring groove connected to the rectangular ring 15; the fixed end of the rectangular lock shaft 4 is formed with a stepped shaft body, which is fastened to the lock cavity base plate of the lock housing base 1 by a locking nut 8, and is connected to the switch pressure claw 7 through the rectangular hole in the center of the positioning ring 13. In the naturally locked state, the lock tongue 2 is extended, the handle 5 is parallel to the lock tongue 2 in the same direction, the switch pressure claw 7 is perpendicular to the telescopic direction of the lock tongue 2, and is tightly attached to the inner bottom ring of the rectangular ring 15, and the lock tongue 2 stays in the naturally locked position. When the top hatch door is closed and the handle 5 is released, the lock tongue 2 extends with the elastic force of the return spring 14 and rebounds into the lock head hole of the lock shell base 1 and the top hatch door side body. The positioning ring 13 is self-locking through the positioning groove on the circumference and the elastic positioning pin 9 in the rear π-shaped guide box cover 6, forming an interlocking between the lock head inclined surface on the lock tongue 2 and the end face of the lock head hole of the corresponding top hatch door side body. The handle 5 drives the positioning ring 13 and the switch pressure claw 7 to rotate clockwise or counterclockwise through the rectangular lock shaft 4, controlling the elastic positioning pin 9 to constrain or separate the locking positioning groove of the positioning ring 13 and the inner side cut angle of the rectangular ring cut corner 16 of the rectangular ring 15 to face the switch pressure claw 7.

[0020] A cylindrical step is formed on the rectangular lock shaft 4 for fixing the handle 5, and a locking thread for assembling the locking nut 8 and a ring groove for the C-shaped retaining ring 11 are formed on the outer circle of the stepped cylinder of the coaxially connected cylindrical step. The locking nut 8 locks the rectangular lock shaft 4 on the seat body of the lock cavity of the lock shell seat body 1 through the adjusting gasket 12 and the assembled C-shaped retaining ring 11 to prevent the handle 5 from being subjected to excessive tension or the rotation distance from being too large after deformation, which affects its use; the adjusting gasket 12 is a double insurance redundant structure used to prevent the locking nut 8 from loosening after rotating with the handle 5, so as to achieve the purpose of preventing the handle 5 from loosening under conditions of withstanding large loads.

[0021] The cylindrical body of the locating ring 13 is formed with two parallel positioning slots. One of these slots is a locking slot 17 that opposes the elastic positioning pin 9 and prevents the handle 5 from rotating freely. The other slot is a locking slot 18 that is offset from the diameter line and opposes the elastic positioning pin 9. This prevents the handle 5 from remaining in an arbitrary position or rotating freely while the vehicle is in motion, and serves to alert occupants that the hatch lock is locked. Both slots are dovetail-shaped, and the locking and locking slots 18 and 17 have their vertices at the center of the circle as their vertices. The central angle α formed by the radii of the arcs at the intersection of their respective inclined surfaces is less than 90°.

[0022] To prevent the handle 5 from remaining in an arbitrary position and rotating arbitrarily while the vehicle is moving, a positioning plate fixed to the rear end of the lock housing 1 is provided. A π-shaped guide housing 6, which is equipped with a positioning spring 10 and an elastic positioning pin 9, is fixedly connected to the positioning plate. The elastic positioning pin 9 is connected to the positioning spring 10 through a guide slot in the π-shaped guide housing 6. The elastic positioning pin 9, mounted in the guide slot of the π-shaped guide housing 6, uses the elastic force of the positioning spring 10 to lock the conical surface of the pin end into one of the two positioning slots formed on the positioning ring 13, thereby preventing the handle 5 from rotating arbitrarily. After the top hatch door is closed and the handle 5 is released in the unlocked state, the lock tongue 2 rebounds back into the lock shell base 1 and the lock head hole of the top hatch door side body with the elastic force of the return spring 14. The lock head inclined surface on the lock tongue 2 is interlocked with the end face of the lock head hole of the corresponding top hatch door side body. At this time, the cone surface of the needle end of the elastic positioning pin 9 is stuck in the locking positioning groove on the positioning ring 13, thereby realizing the locking function of the top hatch lock.

[0023] See Figure 6 When the handle 5 rotates counterclockwise, the rectangular lock shaft 4 drives the positioning ring 13 and the switch pressure claw 7 to rotate counterclockwise together, driving the locking positioning groove 17 on the circumference of the positioning ring 13 to disengage from the constraint of the elastic positioning pin 9. The switch pressure claw 7 rotates toward the locking positioning groove 17, pushing the inner bottom ring of the rectangular ring 15 to pass over the π-shaped guide box cover 6. The lock tongue 2 retracts and is in the unlocked state. The elastic positioning pin 9 disengages from the locking positioning groove 17. The switch pressure claw 7 deflects to the limit position and leans against the π-shaped guide box cover 6. The elastic positioning pin 9 stays at any position on the circumference of the positioning ring 13 under the action of the positioning spring 10. The inner bottom ring of the rectangular ring 15 is tightly attached to the inner wall of the rear end of the lock cavity of the lock housing base 1, realizing the unlocking function of the top compartment lock.

[0024] See Figure 7The two ends of the outer bottom ring of the rectangular ring 15 in the lock tongue 2 are L-shaped ring grooves formed by arc transition, and the corners of the L-shaped ring groove are made with rectangular ring cut corners. When the handle 5 rotates clockwise, the rectangular lock shaft 4 drives the positioning ring 13 and the switch pressure claw 7 to rotate clockwise, driving the switch pressure claw 7 to rotate in the direction of the cut corner on a diagonal line of the rectangular ring 15. The locking positioning groove 17 on the circumference of the positioning ring 13 is released from the constraint of the elastic positioning pin 9, and the top of the switch pressure claw 7 is exactly tangent to the rectangular ring cut corner 16. The elastic positioning pin 9 slides into the locking positioning groove 18 on the circumference of the positioning ring 13 under the action of the positioning spring 10. The lock tongue 2 is extended and is in a locked state. The lock tongue 2 cannot move toward the π-shaped guide box cover 6 under the action of external force, thereby realizing the closed locking function of the top cabin lock.

[0025] The foregoing description is a preferred embodiment of the present invention. It should be noted that the foregoing embodiment is intended to illustrate the present invention, but the present invention is not limited thereto. Those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A top hatch lock for an armored vehicle, comprising: A lock housing base (1) assembled on a top hatch door, a lock tongue (2) inserted from a lateral lock hole into the lock housing base (1) and locked between the top hatch door side body lock hole, a return spring (14) arranged on the inner side of the lock tongue (2) and positioned by a spring column (3), and a rectangular lock shaft (4) fixedly connected to a handle (5) in a forward vertical direction, characterized in that: the lock tongue (2) inserted from the lock hole into the lock cavity of the lock housing base (1) has a trapezoidal body with a rectangular transition connection and a rectangular ring (15) forming a step surface with the trapezoidal body, and a return spring groove connected to the rectangular ring (15); a rectangular ring is formed on the inner side of the rectangular ring (15) of the lock tongue (2) near the corner of the telescopic end of the lock tongue (2) The fixed end of the rectangular lock shaft (4) is provided with a stepped shaft body, which is fastened to the lock chamber base plate of the lock housing seat (1) through a locking nut (8), and is connected to the switch pressing claw (7) through the rectangular hole in the center of the positioning ring (13). In the natural locking state, the lock tongue (2) is extended, the handle (5) is parallel to the lock tongue (2), the switch pressing claw (7) is perpendicular to the extension direction of the lock tongue (2), and is tightly attached to the inner bottom ring of the rectangular ring (15). The lock tongue (2) stays in the natural locking position. In the unlocking state, after the top hatch door is closed and the handle (5) is released, the lock tongue (2) is extended by the elastic force of the reset spring (14), and rebounds into the lock head hole of the lock housing seat (1) and the top hatch door side body, and the positioning ring (13 ) Self-locking is achieved by the positioning groove on the circumference and the elastic positioning pin (9) in the rear π-shaped guide box cover (6). The lock head inclined surface on the lock tongue (2) forms an interlock with the end face of the corresponding top hatch side body lock head hole. The two positioning grooves formed on the positioning ring (13) are one for the locking positioning groove and the other for the locking positioning groove. The positioning grooves are dovetail grooves. The handle (5) drives the positioning ring (13) and the switch pressure claw (7) to rotate clockwise or counterclockwise through the rectangular lock shaft (4), controlling the elastic positioning pin (9) to constrain or separate the locking positioning groove or the locking positioning groove formed on the positioning ring (13) and the inner side cut angle of the rectangular ring cut angle (16) of the rectangular ring (15) to constrain or separate the switch pressure claw (7). ; and the elastic positioning needle (9) assembled in the guide slot hole of the π-shaped guide box cover (6) is clamped in the locking positioning slot or the locking positioning slot of the two positioning slots formed on the positioning ring (13) by the elastic force of the positioning spring (10), thereby preventing the handle (5) from rotating at will; in the unlocked state, after the top hatch door is closed and the handle (5) is released, the lock tongue (2) is rebounded into the lock shell base (1) and the top hatch door side body lock hole by the elastic force of the return spring (14), and the lock head inclined surface on the lock tongue (2) forms an interlock with the end face of the corresponding top hatch door side body lock head hole. At this time, the needle end cone of the elastic positioning needle (9) itself is clamped in the locking positioning slot on the positioning ring (13), thereby realizing the locking function of the top hatch lock;When the handle (5) rotates clockwise, the rectangular lock shaft (4) drives the positioning ring (13) and the switch pressing claw (7) to deflect clockwise, driving the switch pressing claw (7) to rotate in the direction of the rectangular ring cut corner (16) of the rectangular ring (15). The locking positioning groove (17) on the circumference of the positioning ring (13) is separated from the constraint of the elastic positioning pin (9). The elastic positioning pin (9) slides into the locking positioning groove (18) on the circumference of the positioning ring (13) under the action of the positioning spring (10). The top end of the switch pressing claw (7) is tangent to the rectangular ring cut corner (16), and the lock tongue (2) is extended in a locked state, thereby realizing the locking and locking function of the top compartment lock.

2. The top hatch lock for an armored vehicle according to claim 1, characterized in that: A cylindrical step for fixing and connecting the handle (5) is formed on the rectangular lock shaft (4), and a locking thread for assembling a locking nut (8) and a ring groove for assembling a C-type retaining ring (11) are formed on the outer circle of the stepped cylinder of the coaxially connected cylindrical step. The locking nut (8) locks the rectangular lock shaft (4) on the seat body of the lock cavity of the lock housing seat body (1) through the adjustment gasket (12) and the assembled C-type retaining ring (11).

3. The top hatch lock for an armored vehicle according to claim 2, characterized in that: The adjusting washer (12) is a double insurance redundant structure used to prevent the locking nut (8) from loosening after the handle (5) is rotated.

4. The top hatch lock for an armored vehicle according to claim 1, characterized in that: Two positioning slots are formed on the cylindrical body of the positioning ring (13), one of which is a locking positioning slot (17) for opposing the elastic positioning pin (9) to prevent the handle (5) from rotating at will; the other is a locking positioning slot (18) for opposing the elastic positioning pin (9) to prevent the handle (5) from staying at any position and rotating at will during the movement of the vehicle.

5. The top hatch lock for an armored vehicle according to claim 4, characterized in that: The locking positioning slot (18) and the closing positioning slot (17) have the center of the circle as the vertex, and the central angle α formed by the radius of the two intersection points of the arcs where the respective inclined surfaces intersect is less than 90°.

6. The top hatch lock for an armored vehicle according to claim 1, characterized in that: A positioning plate fixed to the base body is provided at the rear end of the lock housing base body (1), and a π-shaped guide box cover (6) assembled with a positioning spring (10) and an elastic positioning needle (9) is fixedly connected to the positioning plate, and the elastic positioning needle (9) is connected to the positioning spring (10) through a guide slot of the π-shaped guide box cover (6).

7. The top hatch lock for an armored vehicle according to claim 1, characterized in that: When the handle (5) rotates counterclockwise, the rectangular lock shaft (4) drives the positioning ring (13) and the switch pressure claw (7) to rotate counterclockwise together, driving the locking positioning groove (17) on the circumference of the positioning ring (13) to break away from the constraint of the elastic positioning pin (9). The switch pressure claw (7) pushes the inner bottom ring of the rectangular ring (15) to pass over the π-shaped guide box cover (6). The lock tongue (2) retracts and is in the unlocked state. The elastic positioning pin (9) breaks away from the locking positioning groove (17). The switch pressure claw (7) deflects to the limit position and leans against the π-shaped guide box cover (6). The elastic positioning pin (9) stays at any position on the circumference of the positioning ring (13) under the action of the positioning spring (10). The inner bottom ring of the rectangular ring (15) is tightly attached to the inner wall of the rear end of the lock cavity of the lock housing base (1), realizing the unlocking function of the top cabin lock.

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