Lock head inching control device

Abstract

The invention relates to the technical field of door locks, in particular to a lock head inching control device which comprises a lock shell, a telescopic cavity is formed in one side of the lock shell, a spring bolt block is slidably mounted in the telescopic cavity, a locking spring is inserted between one end of the spring bolt block and the telescopic cavity, and a guide groove is formed in the telescopic cavity. A rotating groove is formed in the end, away from the telescopic cavity, of the guide groove, a transmission mechanism is installed in the guide groove and the rotating groove, one end of the transmission mechanism is connected with the lock cylinder piece of the lock cylinder body, and counter locking mechanisms are symmetrically installed on the upper side and the lower side of the transmission mechanism. The spring bolt block is clamped into the locking groove under the action of the elastic force of the locking spring; at the moment, the key is rotated reversely, the lock cylinder piece of the lock cylinder body drives the transmission mechanism to rotate and move reversely, the concave connecting piece slides towards the outer end of the guide groove, and one end of the counter locking mechanism is driven by the concave connecting piece to be connected with the locking groove in an inserted mode.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and specifically to a lock head micro-motion control device. Background Art

[0002] A ship is an artificial means of transportation mainly operating in geographical waters. In addition, civilian ships are generally called boats, military ships are called warships, and small ships are called boats or canoes, and their general name is ships or boats. Door locks are installed on the doors of some passage openings, cabins, etc. on ships to improve the safety on ships. During daily use, the passage door locks and cabin door locks are used frequently; during the ship's voyage, the door locks are often impacted by external forces due to the ship's sway, resulting in situations such as the locking tongues becoming loose, causing the door not to be firmly locked, thus affecting the safety of the door locks. Moreover, the existing door locks have relatively weak protection capabilities. When the door locks are directly violently damaged or pried open targeted and then forced to open the door, the existing door locks cannot provide good protection, resulting in the door being forced open, causing property losses, and seriously endangering the safety of the crew. Summary of the Invention

[0003] The purpose of the present invention is to provide a lock head micro-motion control device to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A lock head micro-motion control device includes a lock housing. A telescopic cavity is opened on one side of the lock housing. A lock tongue block is slidably installed in the telescopic cavity. A locking spring is inserted between one end of the lock tongue block and the telescopic cavity. A guide groove is opened in the telescopic cavity. A rotation groove is opened at one end of the guide groove far from the telescopic cavity. A transmission mechanism is installed in the guide groove and the rotation groove. One end of the transmission mechanism is connected to the lock core part of the lock core body. Anti-lock mechanisms are symmetrically installed on the upper and lower sides of the transmission mechanism; A fixed seat is arranged on the outer side of the lock housing. The fixed seat is not in contact with the lock housing. Both the lock housing and the fixed seat are installed in the door body. Cutting mechanisms are symmetrically installed up and down in the fixed seat. One side of the cutting mechanism is in contact with the outer side surface of the lock housing. A positioning seat is installed at the upper end of the door body. The upper end of the positioning seat is at the same horizontal plane as the upper end of the door body. A protection mechanism is installed in the positioning seat. The lower end of the protection mechanism is fixedly connected to a connecting rope. The lower end of the connecting rope penetrates the fixed seat from top to bottom, and the lower end of the connecting rope is fixedly connected to an anti-upper movement block.

[0005] Preferably, the transmission mechanism includes a concave connecting member slidably mounted in the guiding groove. The concave connecting member is stuck on both sides of the locking tongue block. A toothed plate is fixedly connected to the side of the concave connecting member away from the locking tongue block. One end of the toothed plate extends into the rotating groove. An ax-shaped gear is meshed above one end of the toothed plate in the rotating groove. A connecting gear is fixedly connected to the side of the ax-shaped gear. Both the connecting gear and the ax-shaped gear are rotationally connected to the rotating groove through a rotating shaft. A sector gear is meshed with the side of the connecting gear. One end of the sector gear is fixedly connected to the locking core member of the locking core body.

[0006] Preferably, sliding grooves are symmetrically formed on the outer side surfaces of both sides of the locking tongue block. Both ends of the inner side of the concave connecting member are symmetrically and fixedly connected with sliding blocks. The sliding blocks are slidably connected with the sliding grooves.

[0007] Preferably, a reset mechanism is arranged on the side of the locking core member of the locking core body in the rotating groove. The reset mechanism includes a sector-shaped fixed block fixedly connected in the rotating groove. An arc-shaped hole is formed through one side of the sector-shaped fixed block. Sector-shaped grooves are symmetrically formed on both sides of the sector-shaped fixed block. An arc-shaped rod is slidably inserted in the arc-shaped hole. The lower end of the arc-shaped rod penetrates downward through the arc-shaped hole and is fixedly sleeved with a limiting ring. A reset spring is sleeved on one end of the arc-shaped rod above the arc-shaped hole. The upper end of the arc-shaped rod is fixedly connected with a sector-shaped movable block. Sector-shaped movable plates are symmetrically and fixedly connected to one side of the sector-shaped movable block on both sides of the arc-shaped rod. The sector-shaped movable plates are slidably connected with the sector-shaped grooves.

[0008] Preferably, the upper and lower sides of the concave connecting member are respectively connected with two anti-locking mechanisms. L-shaped transmission grooves are symmetrically formed on the upper and lower sides of the guiding groove. Connecting grooves are formed at one ends of the two transmission grooves close to the outside. Retraction grooves are formed on one side of the two connecting grooves close to each other. Limiting grooves are symmetrically formed on the upper and lower side walls of the telescopic cavity; The anti-locking mechanism includes an L-shaped transmission plate fixedly connected to the side of the concave connecting member. The L-shaped transmission plate is slidably connected with the transmission groove. One end of the L-shaped transmission plate penetrates through the transmission groove and extends into the connecting groove. An extrusion block is fixedly connected to the inner side wall of one end of the L-shaped transmission plate in the connecting groove. An extrusion inclined surface is formed at one end of the extrusion block close to the outside. Positioning mechanisms are symmetrically installed up and down in the two retraction grooves.

[0009] Preferably, the positioning mechanism includes an L-shaped block slidably mounted up and down in the retraction groove. An elastic sheet is installed between the inner side of the L-shaped block and the bottom of the retraction groove. One end of the L-shaped block penetrates through the retraction groove and extends into the limiting groove. The L-shaped block is slidably connected with the lock housing. Limiting blocks are symmetrically and fixedly connected to the upper and lower sides of the locking tongue block. The limiting blocks are slidably connected with the limiting grooves.

[0010] Preferably, the cutting mechanism includes a pressing plate arranged outside the fixed seat. One side of the pressing plate contacts the lock housing. Symmetrically fixed to the side of the pressing plate close to the fixed seat are round rods, on which thrust springs are sleeved. Symmetrically opened on the side of the fixed seat close to the pressing plate are circular grooves. One ends of the two round rods are respectively inserted into the two circular grooves, and the two ends of the thrust springs respectively abut against the pressing plate and the bottom of the circular grooves. Fixed to the side of the pressing plate close to the fixed seat between the two round rods is a cutting blade. The side of the fixed seat is penetrated and provided with two cutting grooves. Both cutting grooves are arranged between the two circular grooves, and the cutting blade is movably inserted into the cutting grooves. The connecting rope passes through the two cutting grooves, and the cutting edge of the cutting blade is arranged on the side of the connecting rope.

[0011] Preferably, symmetrically opened on the side of the fixed seat away from the pressing plate are connecting round holes. One end of the round rod passes through the fixed seat and extends into the connecting round holes. Fixedly sleeved on the end of the round rod in the connecting round holes is an annular block, and the round rod is slidably connected to the fixed seat.

[0012] Preferably, a rectangular groove is opened inside the positioning seat. The upper end of one side of the rectangular groove penetrates outward to form a lifting groove. The positioning seat is formed by splicing two symmetric plates. The protection mechanism includes a rectangular block installed in the rectangular groove. Fixedly connected to the upper end of the rectangular block is a protection insertion rod. The upper end of the protection insertion rod penetrates upward through the positioning seat. Fixedly connected to the upper end of the side of the rectangular block is a push plate. The push plate penetrates the lifting groove. The lower end of the rectangular block abuts against a trigger spring. The lower end of the trigger spring abuts against the lower end of the rectangular groove. The upper end of the connecting rope passes through the inner cavity of the trigger spring and is fixedly connected to the lower end of the rectangular block.

[0013] Preferably, the rectangular block is slidably connected to the rectangular groove up and down, the push plate is slidably connected to the lifting groove up and down, and the protection insertion rod is slidably connected to the positioning seat up and down.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, with the following advantages: 1. When closing the door, rotate the rotating door body and insert it into the door frame. Under the action of the elastic force of the locking spring, the lock tongue block is inserted into the locking groove. At this time, rotate the key in the reverse direction again, so that the lock core part of the lock core body drives the transmission mechanism to rotate and move in the reverse direction, making the concave connecting piece slide towards the outer end of the guiding groove. The anti-lock mechanism is driven by the concave connecting piece to move outward, thereby completing the locking and anti-locking of the door body. At this time, the concave connecting piece drives the slider to slide to one end of the chute close to the inclined surface.

[0015] 2. When opening the door, turn the key to drive the lock core component of the lock core body to rotate the transmission mechanism, causing the slider to slide to the end of the chute away from the inclined surface. During this process, the concave connecting piece drives the anti-lock mechanism to move inward; at this time, one side of the sector gear contacts the sector movable block; at this time, continue to turn the key to make the concave connecting piece continue to move towards the inner end of the guide groove. When the slider moves, it drives the lock tongue block to move into the telescopic cavity until the lock tongue block is completely retracted into the telescopic cavity, separating the lock tongue block from the locking groove. At this time, the door body can be rotated open.

[0016] 3. When the door is opened or the handle / key is released, under the elastic force of the locking spring, the lock tongue block slides outwards along the telescopic cavity until it stops. At this time, the slider is at the end of the chute away from the inclined surface; at the same time, when the key is released, there is no external turning force on the lock core body. At this time, under the elastic force of the return spring, the sector movable block rotates back for resetting. The sector movable block pushes the sector gear to rotate in the reverse direction, so that the lock core component of the lock core body rotates back for resetting, facilitating the user to open or anti-lock the door next time.

[0017] 4. When the door lock is directly violently damaged or pried open forcibly, the external force will cause the lock housing to tilt inwards, causing the cutting mechanism to cut the connecting rope. Under the elastic force of the triggering spring, the rectangular block is pushed to slide upwards along the rectangular groove, and the protective insertion rod is moved upwards out of the positioning seat and inserted into the protective slot at the upper end of the door frame for protection, further locking between the door body and the door frame; by triggering the protection mechanism, the door body and the door frame are firmly locked to prevent forced opening and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of the structure of the lock head micro-motion control device of the present invention; Figure 2 is a cross-sectional view of the structure of the lock head micro-motion control device of the present invention; Figure 3 is a side cross-sectional view of the structure of the lock head micro-motion control device of the present invention; Figure 4 is Figure 3 an enlarged schematic view of the structure at A in Figure 5 is an exploded view of the structure of the lock head micro-motion control device of the present invention; Figure 6 is an exploded view of the structure of the reset mechanism of the present invention; Figure 7 is a cross-sectional view of the structure of the fixed seat of the present invention; Figure 8 is an exploded view of the structure of the fixed seat, cutting mechanism and connecting rope of the present invention; Figure 9 is a cross-sectional view of the structure of the positioning seat of the present invention.

[0019] In the figure: 1. Lock housing; 11. Telescopic cavity; 12. Guide groove; 13. Rotation groove; 14. Transmission groove; 15. Connection groove; 16. Limit groove; 17. Shrinkage groove; 2. Lock tongue block; 21. Slide groove; 22. Locking spring; 23. Limit block; 24. L-shaped block; 25. Elastic sheet; 3. Concave connector; 31. Slide block; 32. Toothed plate; 33. L-shaped transmission plate; 34. Extrusion block; 4. Lock core body; 41. Sector gear; 42. Connecting gear; 43. Axe-shaped gear; 5. Sector fixed block; 51. Arc hole; 52. Sector groove; 53. Arc rod; 54. Return spring; 55. Sector movable block; 56. Sector movable plate; 6. Fixed seat; 61. Circular groove; 62. Cutting groove; 63. Pressure plate; 64. Round rod; 65. Thrust spring; 66. Cutting blade; 7. Connecting rope; 71. Trigger spring; 8. Positioning seat; 81. Rectangular groove; 82. Lifting groove; 83. Rectangular block; 84. Protective insertion rod; 85. Push plate. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a lock head micro motion control device, including a lock housing 1, a telescopic cavity 11 is opened on one side of the lock housing 1, a lock tongue block 2 is slidably installed in the telescopic cavity 11, a locking spring 22 is inserted between one end of the lock tongue block 2 and the telescopic cavity 11, and both ends of the locking spring 22 are respectively abutted against one end of the lock tongue block 2 in the telescopic cavity 11 and the innermost side of the telescopic cavity 11. A guide groove 12 is opened in the telescopic cavity 11, a rotation groove 13 is opened at one end of the guide groove 12 away from the telescopic cavity 11, a transmission mechanism is installed in the guide groove 12 and the rotation groove 13, one end of the transmission mechanism is connected to the lock core part of the lock core body 4, and the transmission mechanism is driven to operate by the lock core part of the lock core body 4. Anti-lock mechanisms are symmetrically installed on the upper and lower sides of the transmission mechanism; A fixing seat 6 is provided on the outer side of the lock housing 1. There is no contact between the fixing seat 6 and the lock housing 1. Both the lock housing 1 and the fixing seat 6 are installed inside the door body. There is a certain gap between the lock housing 1 and the fixing seat 6. Cutting mechanisms are symmetrically installed up and down inside the fixing seat 6. One side of the cutting mechanism contacts the outer side surface of the lock housing 1. A positioning seat 8 is installed at the upper end of the door body. The upper end of the positioning seat 8 is at the same horizontal plane as the upper end of the door body. A protection mechanism is installed inside the positioning seat 8. The lower end of the protection mechanism is fixedly connected with a connecting rope 7. The lower end of the connecting rope 7 penetrates through the fixing seat 6 from top to bottom, and the lower end of the connecting rope 7 is fixedly connected with an anti-upper movement stop block.

[0022] The lock housing 1 is composed of two spliced housings, and the two housings are locked by the cooperation of screws and nuts. A locking groove matching the lock tongue block 2 is provided on the side surface of the door frame, and a protection slot matching the protection mechanism is provided at the upper end of the door frame.

[0023] The connecting rope 7 passes through the inside of the door body. The upper end of the connecting rope 7 extends into the positioning seat 8. The connecting rope 7 can slide along the door body, the positioning seat 8 and the fixing seat 6 respectively. An installation cavity is provided inside the door body. Both the lock housing 1 and the fixing seat 6 are installed in the installation cavity, and there is a gap between the fixing seat 6 and the bottom of the installation cavity, so that when the lower end of the connecting rope 7 extends to the bottom of the installation cavity, it can still be connected with the anti-upper movement stop block.

[0024] Please refer to Figure 2 、 Figure 3 and Figure 5 As shown in

[0025] Chute grooves 21 are symmetrically provided on the two outer side surfaces of the lock tongue block 2. The openings of the two chute grooves 21 are respectively close to the two inner side walls of the concave-shaped connecting piece 3. Symmetrically fixed at both ends inside the concave-shaped connecting piece 3 are sliding blocks 31, and the sliding blocks 31 are slidably connected with the chute grooves 21.

[0026] The diameter of the connecting gear 42 is smaller than the diameters of the sector gear 41 and the ax-shaped gear 43. That is, when the sector gear 41 rotates a certain angle, the angle by which the sector gear 41 drives the connecting gear 42 to rotate is greater than the angle by which the sector gear 41 rotates. Insert the key into the lock core body 4 and rotate the key to drive the rotation of the lock core body 4. The lock core body 4 drives the sector gear 41 to rotate through the lock core component. The sector gear 41 drives the connecting gear 42 to rotate. The connecting gear 42 drives the axe-shaped gear 43 to rotate synchronously. The axe-shaped gear 43 drives the toothed plate 32 to rotate synchronously. The toothed plate 32 drives the concave-shaped connector 3 to slide along the guide groove 12. By rotating the key forward or backward, the toothed plate 32 can be inserted into or removed from the rotation groove 13, so that the concave-shaped connector 3 moves towards the inner end or slides towards the outer end of the guide groove 12.

[0027] One end of the lock tongue block 2 outside the telescopic cavity 11 is provided with an inclined surface. In the initial state, one end of the lock tongue block 2 is caught in the locking groove, and one end of the anti-lock mechanism is inserted into the locking groove. At this time, the slider 31 is at one end of the sliding groove 21 close to the inclined surface. The connection method between the handle and the lock core body 4 adopts the existing technology method, and the anti-lock method on the inner side of the door body also adopts the existing technology method, so it will not be described in detail here. When opening the door, rotate the handle or the key to drive the lock core body 4 to drive the lock core component to rotate. The lock core component drives the transmission mechanism to rotate, so that the concave-shaped connector 3 moves towards the inner end of the guide groove 12. At this time, the concave-shaped connector 3 drives the slider 31 to slide inward along the sliding groove 21 until the slider 31 slides to the end of the sliding groove 21 away from the inclined surface. During this process, the concave-shaped connector 3 drives the anti-lock mechanism to move inward towards the door body, so that one end of the anti-lock mechanism is separated from the locking groove. At this time, continue to rotate the lock core body 4 to make the concave-shaped connector 3 continue to move towards the inner end of the guide groove 12. At this time, the concave-shaped connector 3 drives the slider 31 to move. When the slider 31 moves, it drives the lock tongue block 2 to move into the telescopic cavity 11 until the lock tongue block 2 is completely retracted into the telescopic cavity 11. The lock tongue block 2 presses the locking spring 22 to separate the lock tongue block 2 from the locking groove. At this time, the door body can be rotated and opened.

[0028] When the door is opened or the handle and the key are released, under the elastic force of the locking spring 22, the lock tongue block 2 slides outwards along the telescopic cavity 11. At this time, the lock tongue block 2 drives the slider 31 to move outwards. The slider 31 drives the concave-shaped connector 3 to slide towards the outer end of the guide groove 12 until the lock tongue block 2 stops. At this time, the slider 31 is at the end of the sliding groove 21 away from the inclined surface.

[0029] When the door is closed, the door body drives the inclined surface of the lock tongue block 2 to contact the door frame. At this time, the door frame presses the inclined surface of the lock tongue block 2, causing the lock tongue block 2 to contract into the telescopic cavity 11. At this time, the lock tongue block 2 presses the locking spring 22; when the door body rotates into the door frame, under the action of the elastic force of the locking spring 22, the lock tongue block 2 is snapped into the locking groove. At this time, rotate the key in the reverse direction, so that the lock core member drives the transmission mechanism to rotate and move in the reverse direction, causing the concave connecting member 3 to slide towards the outer end of the guiding groove 12, and through the concave connecting member 3, one end of the anti-lock mechanism is inserted into the locking groove, thereby completing the locking and anti-locking of the door body.

[0030] Please refer to Figure 3 and Figure 6 Figure 6 , a reset mechanism is provided on the side of the lock core member of the lock core body 4 in the rotation groove 13. The reset mechanism includes a sector-shaped fixed block 5 fixedly connected in the rotation groove 13. An arc-shaped hole 51 is formed through one side of the sector-shaped fixed block 5. Sector-shaped grooves 52 are symmetrically formed on both sides of the sector-shaped fixed block 5. An arc-shaped rod 53 is slidably inserted into the arc-shaped hole 51. The lower end of the arc-shaped rod 53 penetrates downward through the arc-shaped hole 51 and is fixedly sleeved with a limiting ring. A reset spring 54 is sleeved on the upper end of the arc-shaped rod 53 above the arc-shaped hole 51. The upper end of the arc-shaped rod 53 is fixedly connected with a sector-shaped movable block 55. On one side of the sector-shaped movable block 55, sector-shaped movable plates 56 are symmetrically fixedly connected on both sides of the arc-shaped rod 53. The sector-shaped movable plates 56 are slidably connected with the sector-shaped grooves 52.

[0031] The sector-shaped movable block 55 is arranged on the rotation path of the sector-shaped gear 41. In the initial state, there is a certain included angle between the sector-shaped gear 41 and the sector-shaped movable block 55, that is, the two do not contact; when opening the door, the lock core member of the lock core body 4 drives the sector-shaped gear 41 to rotate close to the sector-shaped movable block 55 until they contact. At this time, continue to rotate the lock core body 4, which will cause the sector-shaped gear 41 to push the sector-shaped movable plate 55 to rotate synchronously; The two ends of the reset spring 54 are respectively abutted against the sector-shaped movable block 55 and the sector-shaped fixed block 5. The reset spring 54 applies an elastic force to the sector-shaped movable block 55. When the sector-shaped movable block 55 rotates, the sector-shaped movable block 55 drives the arc-shaped rod 53 to slide along the arc-shaped hole 51. At the same time, the sector-shaped movable block 55 drives the sector-shaped movable plate 56 to slide along the sector-shaped groove 52, so that the sector-shaped movable block 55 can rotate stably.

[0032] The concave connecting member 3 drives the anti-lock mechanism to contract and move into the door body, causing one end of the anti-lock mechanism to separate from the locking groove. At the same time, when the concave connecting member 3 drives the slider 31 to slide to the end of the sliding groove 21 far from the inclined surface, the lock core member of the lock core body 4 continues to drive the sector-shaped gear 41 to rotate; At this time, one side of the sector gear 41 contacts the sector movable block 55. When the sector gear 41 continues to rotate, the sector gear 41 pushes the sector movable block 55 to rotate, causing the sector movable block 55 to rotate closer to the sector fixed block 5, and the sector movable block 55 compresses the return spring 54; When the key is released, the lock core body 4 has no external knob force. At this time, under the action of the elastic force of the return spring 54, the sector movable block 55 rotates back for resetting. The sector movable block 55 pushes the sector gear 41 to rotate in the reverse direction, so that the lock core part of the lock core body 4 rotates back for resetting.

[0033] Please refer to Figures 3 to 5 , the upper and lower sides of the concave connecting piece 3 are respectively connected to two anti-lock mechanisms. L-shaped transmission grooves 14 are symmetrically opened on the upper and lower sides of the guide groove 12. Connecting grooves 15 are opened at one ends of the two transmission grooves 14 close to the outside. Shrinking grooves 17 are opened on one sides of the two connecting grooves 15 close to each other. The two shrinking grooves 17 are symmetrically distributed up and down. Limiting grooves 16 are symmetrically opened on the upper and lower side walls of the telescopic cavity 11; The anti-lock mechanism includes L-shaped transmission plates 33 fixedly connected to the side surfaces of the concave connecting piece 3. The two L-shaped transmission plates 33 are symmetrically distributed up and down on the upper and lower side surfaces of the concave connecting piece 3. The L-shaped transmission plates 33 are slidably connected to the transmission grooves 14. One end of the L-shaped transmission plate 33 passes through the transmission groove 14 and extends into the connecting groove 15. An extrusion block 34 is fixedly connected to the inner side wall of one end of the L-shaped transmission plate 33 in the connecting groove 15. An extrusion inclined surface is opened at one end of the extrusion block 34 close to the outside. Positioning mechanisms are symmetrically installed up and down in the two shrinking grooves 17.

[0034] When the concave connecting piece 3 moves, it drives the two L-shaped transmission plates 33 to move synchronously. The L-shaped transmission plates 33 drive the extrusion blocks 34 to move outwards, so as to realize the anti-lock of the door.

[0035] The positioning mechanism includes L-shaped blocks 24 slidably installed up and down in the shrinking grooves 17. An elastic sheet 25 is installed between the inner side of the L-shaped block 24 and the bottom of the shrinking groove 17. The two sides of the elastic sheet 25 are respectively abutted against the L-shaped block 24 and the bottom of the shrinking groove 17. The elastic sheet 25 applies an elastic force to the L-shaped block 24. One end of the L-shaped block 24 passes through the shrinking groove 17 and extends into the limiting groove 16. The L-shaped block 24 is slidably connected to the lock housing 1. Limiting blocks 23 are symmetrically fixedly connected to the upper and lower sides of the lock tongue block 2. The limiting blocks 23 are slidably connected to the limiting grooves 16.

[0036] The bent portion of the L-shaped block 24 is provided with an inverted chamfer. When the L-shaped transmission plate 33 moves outward with the concave connecting member 3, at this time, the L-shaped transmission plate 33 drives the extrusion block 34 to move closer to the L-shaped block 24. The extrusion inclined surface of the extrusion block 34 first contacts the L-shaped block 24. At this time, the extrusion block 34 pushes the L-shaped block 24 to contract into the contraction groove 17. The L-shaped block 24 squeezes the elastic piece 25. One end of the L-shaped block 24 extends into the limit groove 16, and the end of the L-shaped block 24 in the limit groove 16 is clamped with the limit block 23, so as to form a resistance to the limit block 23; Prevent the limit block 23 from moving inward, so that the lock tongue block 2 cannot contract into the telescopic cavity 11. Prevent the lock tongue block 2 from loosening and other situations after being impacted by external forces due to the shaking of the ship, so that the lock tongue block 2 can firmly lock the door and ensure the safety of the door lock.

[0037] When the L-shaped transmission plate 33 moves inward with the concave connecting member 3, at this time, the L-shaped transmission plate 33 drives the extrusion block 34 to move away from the L-shaped block 24. When the extrusion block 34 moves away from the L-shaped block 24, under the action of the elastic force of the elastic piece 25, the L-shaped block 24 moves out of the contraction groove 17. At this time, one end of the L-shaped block 24 moves out of the limit groove 16, and the L-shaped block 24 loosens the resistance to the limit block 23.

[0038] Through the cooperation of the anti-lock mechanism and the positioning mechanism provided, the lock tongue block 2 can be anti-locked. There is no need to additionally install an anti-lock tongue, which reduces the overall volume of the lock and can be applied to relatively narrow scenarios. At the same time, the card slots opened on the door frame are reduced.

[0039] Please refer to Figure 7 and Figure 8 , the cutting mechanism includes a pressing plate 63 arranged outside the fixed seat 6. One side of the pressing plate 63 contacts the lock housing 1, and there is no contact between the pressing plate 63 and the fixed seat 6. Symmetrically fixed on the side of the pressing plate 63 close to the fixed seat 6 are round rods 64. A thrust spring 65 is sleeved on the round rods 64. Symmetrically opened on the side of the fixed seat 6 close to the pressing plate 63 are circular grooves 61. One ends of the two round rods 64 are respectively inserted into the two circular grooves 61. The two ends of the thrust spring 65 respectively abut against the pressing plate 63 and the bottom of the circular groove 61. The thrust spring 65 applies an elastic force to the pressing plate 63 to make the pressing plate 63 firmly contact the lock housing 1; A cutting blade 66 is fixedly connected between the two round rods 64 on the side of the pressing plate 63 close to the fixed seat 6. Two cutting grooves 62 are penetrated through the side of the fixed seat 6. Both cutting grooves 62 are arranged between the two circular grooves 61, and the cutting blade 66 is movably inserted into the cutting grooves 62. The connecting rope 7 passes through the two cutting grooves 62, and the cutting edge of the cutting blade 66 is arranged on the side of the connecting rope 7.

[0040] A connecting circular hole is symmetrically opened on one side of the fixing seat 6 away from the pressure plate 63. One end of the round rod 64 passes through the fixing seat 6 and extends into the connecting circular hole. One end of the round rod 64 in the connecting circular hole is fixedly sleeved with an annular block, and the round rod 64 is slidably connected to the fixing seat 6.

[0041] When the door is opened violently from the outside, or the lock is pried open with a crowbar, the external force will cause the lock housing 1 to tilt inward. At this time, the lock housing 1 pushes the pressure plate 63 to move closer to the fixed seat 6, and the pressure plate 63 drives the cutting blade 66 to continue to move into the cutting groove 62. The cutting blade 66 cuts the connecting rope 7, so that the connecting rope 7 releases the restriction on the protective mechanism.

[0042] See also Figure 1 and Figure 9 The upper end of the connecting rope 7 passes through the inner cavity of the trigger spring 71 and is fixedly connected to the lower end of the rectangular block 83.

[0043] The rectangular block 83 is connected to the rectangular groove 81 by sliding up and down, the push plate 85 is connected to the lifting groove 82 by sliding up and down, and the protective rod 84 is connected to the positioning seat 8 by sliding up and down. In the initial state, there is a certain space between the upper end of the rectangular block 83 and the upper end of the rectangular groove 81, the upper end of the protective rod 84 is lower than the upper end of the positioning seat 8, and the trigger spring 71 is in a compressed state. The trigger spring 71 applies an upward elastic force to the rectangular block 83.

[0044] When the connecting rope 7 breaks, the connecting rope 7 releases the restriction on the rectangular block 83, and the rectangular block 83 is pushed to slide upward along the rectangular groove 81 under the action of the elastic force of the trigger spring 71. The rectangular block 83 drives the protective rod 84 to slide upward along the positioning seat 8, so that the protective rod 84 moves upward out of the positioning seat 8, and the protective rod 84 is plugged into the protective slot at the upper end of the door frame, thereby providing protection and further locking the door body and the door frame; When the door lock is directly destroyed by violence or is pried open by force, the protective mechanism is triggered, thereby firmly locking the door body and door frame to prevent the door from being forced open and improve safety.

[0045] When the protective mechanism is triggered by external force to open the door, further protection can be achieved; when it is safe and the door needs to be opened, if there is someone indoors, by pushing the push plate 85 downward, the push plate 85 drives the protective plug 84 downward through the rectangular block 83, so that the protective plug 84 is separated from the protective slot, and then the door lock is opened to open the door, reducing the difficulty of opening the door later and the need to disassemble it as a whole to reduce the cost of maintenance.

[0046] Working principle: When closing the door, the door body is rotated to be stuck in the door frame, and the door body drives the inclined surface of the lock tongue block 2 to contact the door frame. At this time, the door frame squeezes the inclined surface of the lock tongue block 2, causing the lock tongue block 2 to retract into the telescopic cavity 11. When the door body is rotated into the door frame, the lock tongue block 2 is stuck in the locking groove under the action of the elastic force of the locking spring 22; at this time, the key is rotated in the reverse direction, so that the lock core of the lock core body 4 drives the transmission mechanism to rotate in the reverse direction, causing the concave connecting member 3 to slide toward the outer end of the guide groove 12, through the concave The connecting member 3 drives the anti-locking mechanism to move. After the extrusion block 34 contacts the L-shaped block 24, the extrusion block 34 pushes the L-shaped block 24 to shrink into the shrinkage groove 17. The L-shaped block 24 squeezes the elastic sheet 25. One end of the L-shaped block 24 extends into the limiting groove 16. One end of the L-shaped block 24 in the limiting groove 16 is engaged with the limiting block 23, thereby forming a resistance to the limiting block 23, thereby completing the locking and anti-locking of the door body. At this time, the concave connecting member 3 drives the slider 31 to slide to the end of the slide groove 21 close to the inclined surface.

[0047] When the door is opened, the key is turned to rotate the lock core of the lock core body 4, driving the transmission mechanism to rotate, causing the concave connecting member 3 to slide toward the inner end of the guide groove 12. At this time, the concave connecting member 3 drives the slider 31 to slide inward along the slide groove 21 until the slider 31 slides to the end of the slide groove 21 away from the inclined surface. During this process, the concave connecting member 3 drives the anti-locking mechanism to retract inward; at this time, one side of the sector gear 41 contacts the sector movable block 55. When the extrusion block 34 is separated from the L-shaped block 24 , the elastic force of the elastic sheet 25 pushes the L-shaped block 24 to move out of the contraction groove 17 , and one end of the L-shaped block 24 moves out of the limiting groove 16 , so that the L-shaped block 24 releases its interference with the limiting block 23 .

[0048] At this time, continue to turn the key to make the concave connecting part 3 continue to move toward the inner end of the guide groove 12. When the slider 31 moves, it drives the lock tongue block 2 to move into the telescopic cavity 11 until the lock tongue block 2 is completely retracted into the telescopic cavity 11, so that the lock tongue block 2 is separated from the locking groove. At this time, the door body can be rotated open.

[0049] At the same time, the sector gear 41 pushes the sector movable block 55 to rotate, so that the sector movable block 55 rotates close to the sector fixed block 5 , and the sector movable block 55 squeezes the reset spring 54 .

[0050] When the door is opened or the handle / key is released, under the elastic force of the locking spring 22, the locking tongue block 2 slides outwards along the telescopic cavity 11. At this time, the locking tongue block 2 drives the slider 31 to move outwards, and the slider 31 drives the concave connecting piece 3 to slide towards the outer end of the guide groove 12 until the locking tongue block 2 stops. At this time, the slider 31 is at one end of the chute 21 away from the inclined surface.

[0051] At the same time, when the key is released, there is no external knob force on the lock core body 4. At this time, under the elastic force of the return spring 54, the sector-shaped movable block 55 rotates back for reset. The sector-shaped movable block 55 pushes the sector gear 41 to rotate in the reverse direction, so that the lock core part of the lock core body 4 rotates back for reset, which is convenient for the user to open or re-lock the door next time.

[0052] When the door lock is directly violently damaged or pried targeted and then forced to open the door, the external force will cause the lock housing 1 to tilt inwards. At this time, the lock housing 1 pushes the pressure plate 63 to move closer to the fixed seat 6, so that the cutting blade 66 cuts the connecting rope 7, and the connecting rope 7 releases the restriction on the rectangular block 83. Under the elastic force of the trigger spring 71, the rectangular block 83 is pushed to slide upwards along the rectangular groove 81, so that the protective plug rod 84 moves upwards from the positioning seat 8 and is inserted into the protective slot at the upper end of the door frame, so as to carry out protection and further lock between the door body and the door frame; When the door lock is directly violently damaged or pried targeted and then forced to open the door, the protection mechanism is triggered, so that the door body and the door frame are firmly locked, preventing forced opening of the door and improving safety.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lock micro-motion control device, comprising a lock housing (1), characterized in that: A telescopic cavity (11) is provided on one side of the lock housing (1), a lock tongue block (2) is slidably installed in the telescopic cavity (11), a locking spring (22) is inserted between one end of the lock tongue block (2) and the telescopic cavity (11), a guide groove (12) is provided in the telescopic cavity (11), a rotation groove (13) is provided at one end of the guide groove (12) away from the telescopic cavity (11), a transmission mechanism is installed in the guide groove (12) and the rotation groove (13), one end of the transmission mechanism is connected to the lock core part of the lock core body (4), and anti-locking mechanisms are symmetrically installed on the upper and lower sides of the transmission mechanism; A fixing seat (6) is provided on the outer side of the lock housing (1), and the fixing seat (6) and the lock housing (1) are not in contact with each other. The lock housing (1) and the fixing seat (6) are both installed in the door body. A cutting mechanism is symmetrically installed in the fixing seat (6) in the upper and lower parts, and one side of the cutting mechanism contacts the outer side surface of the lock housing (1). A positioning seat (8) is installed at the upper end of the door body, and the upper end of the positioning seat (8) is in the same horizontal plane as the upper end of the door body. A protective mechanism is installed in the positioning seat (8), and the lower end of the protective mechanism is fixedly connected to a connecting rope (7). The lower end of the connecting rope (7) passes through the fixing seat (6) from top to bottom, and the lower end of the connecting rope (7) is fixedly connected to an anti-upward movement block.

2. The lock micro-motion control device according to claim 1, characterized in that: The transmission mechanism includes a concave connecting member (3) slidably mounted in the guide groove (12), the concave connecting member (3) is clamped on both sides of the lock tongue block (2), and a tooth plate (32) is fixedly connected to the side of the concave connecting member (3) away from the lock tongue block (2), one end of the tooth plate (32) extends into the rotation groove (13), and an axe-shaped gear (43) is meshed above one end of the tooth plate (32) in the rotation groove (13), and a connecting gear (42) is fixedly connected to the side of the axe-shaped gear (43), and the connecting gear (42) and the axe-shaped gear (43) are both rotatably connected to the rotation groove (13) through a rotating shaft, and a fan gear (41) is meshed on the side of the connecting gear (42), and the fan gear (41) is fixedly connected to one end of the lock core member of the lock core body (4).

3. The lock micro-motion control device according to claim 2, characterized in that: Slide grooves (21) are symmetrically provided on the two outer side surfaces of the locking tongue block (2), and sliders (31) are symmetrically fixedly connected to the two ends of the inner side of the concave connecting member (3), and the sliders (31) are slidably connected to the slide grooves (21).

4. The lock micro-motion control device according to claim 1, characterized in that: A reset mechanism is provided on the side of the lock core member of the lock core body (4) in the rotating groove (13), and the reset mechanism includes a fan-shaped fixed block (5) fixedly connected to the rotating groove (13), an arc hole (51) is formed through one side of the fan-shaped fixed block (5), and fan-shaped grooves (52) are symmetrically formed on both sides of the fan-shaped fixed block (5), an arc rod (53) is slidably inserted into the arc hole (51), the lower end of the arc rod (53) downwardly penetrates the arc hole (51) and is fixedly sleeved with a limit ring, and a reset spring (54) is sleeved on one end of the arc rod (53) above the arc hole (51), and a fan-shaped movable block (55) is fixedly connected to the upper end of the arc rod (53), and a fan-shaped movable plate (56) is symmetrically fixedly connected to one side of the fan-shaped movable block (55) on both sides of the arc rod (53), and the fan-shaped movable plate (56) is slidably connected to the fan-shaped groove (52).

5. The lock micro-motion control device according to claim 2, characterized in that: The upper and lower sides of the concave connecting member (3) are respectively connected to two anti-locking mechanisms, and L-shaped transmission grooves (14) are symmetrically provided on the upper and lower sides of the guide groove (12). The two transmission grooves (14) are provided with a connecting groove (15) at one end close to the outer side, and the two connecting grooves (15) are provided with a contraction groove (17) on the side close to each other. The upper and lower side walls of the telescopic cavity (11) are symmetrically provided with limiting grooves (16); The anti-locking mechanism includes an L-shaped transmission plate (33) fixedly connected to the side of the concave connecting member (3), the L-shaped transmission plate (33) is slidably connected to the transmission groove (14), one end of the L-shaped transmission plate (33) passes through the transmission groove (14) and extends into the connecting groove (15), an extrusion block (34) is fixedly connected to the inner side wall of one end of the L-shaped transmission plate (33) in the connecting groove (15), an extrusion slope is provided at one end of the extrusion block (34) close to the outer side, and positioning mechanisms are symmetrically installed in the two contraction grooves (17).

6. The lock micro-motion control device according to claim 5, characterized in that: The positioning mechanism includes an L-shaped block (24) slidably mounted in a contraction groove (17) up and down, an elastic sheet (25) being mounted between the inner side of the L-shaped block (24) and the bottom of the contraction groove (17), one end of the L-shaped block (24) passing through the contraction groove (17) and extending into the limiting groove (16), the L-shaped block (24) being slidably connected to the lock housing (1), and the upper and lower sides of the lock tongue block (2) being symmetrically fixedly connected to the limiting blocks (23), and the limiting blocks (23) being slidably connected to the limiting groove (16).

7. The lock micro-motion control device according to claim 1, characterized in that: The cutting mechanism includes a pressure plate (63) arranged on the outside of the fixing seat (6), one side of the pressure plate (63) contacts the lock housing (1), and a round rod (64) is symmetrically fixedly connected to the side of the pressure plate (63) close to the fixing seat (6), and a thrust spring (65) is sleeved on the round rod (64). A circular groove (61) is symmetrically opened on the side of the fixing seat (6) close to the pressure plate (63), one end of the two round rods (64) is respectively inserted into the two circular grooves (61), and the two ends of the thrust spring (65) are respectively in contact with the bottom of the pressure plate (63) and the circular groove (61); A cutting blade (66) is fixedly connected between two round rods (64) on one side of the pressure plate (63) close to the fixing seat (6). Two cutting grooves (62) are provided through the side of the fixing seat (6). The two cutting grooves (62) are both arranged between the two circular grooves (61), and the cutting blade (66) is movably connected to the cutting groove (62). The connecting rope (7) passes through the two cutting grooves (62), and the blade of the cutting blade (66) is arranged on the side of the connecting rope (7).

8. The lock micro-motion control device according to claim 7, characterized in that: A connecting circular hole is symmetrically opened on one side of the fixing seat (6) away from the pressure plate (63), one end of the round rod (64) passes through the fixing seat (6) and extends into the connecting circular hole, and an annular block is fixedly sleeved on one end of the round rod (64) in the connecting circular hole, and the round rod (64) is slidably connected to the fixing seat (6).

9. The lock micro-motion control device according to claim 1, characterized in that: A rectangular groove (81) is provided on the inner side of the positioning seat (8), and a lifting groove (82) is provided through the upper end of one side of the rectangular groove (81). The positioning seat (8) is formed by splicing two symmetrical plates. The protective mechanism includes a rectangular block (83) installed in the rectangular groove (81), and the upper end of the rectangular block (83) is fixedly connected to a protective plug rod (84). The upper end of the protective plug rod (84) upwardly penetrates the positioning seat (8). The upper end of the side of the rectangular block (83) is fixedly connected to a push plate (85), and the push plate (85) penetrates the lifting groove (82). The lower end of the rectangular block (83) abuts against a trigger spring (71), and the lower end of the trigger spring (71) abuts against the lower end of the rectangular groove (81). The upper end of the connecting rope (7) passes through the inner cavity of the trigger spring (71) and is fixedly connected to the lower end of the rectangular block (83).

10. The lock micro-motion control device according to claim 9, characterized in that: The rectangular block (83) is connected to the rectangular groove (81) in an up-down sliding manner, the push plate (85) is connected to the lifting groove (82) in an up-down sliding manner, and the protective insertion rod (84) is connected to the positioning seat (8) in an up-down sliding manner.

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