A lock body structure

Abstract

The present invention belongs to the technical field of door locks, and particularly relates to a lock body structure, comprising a lock box and a lock body panel, wherein a main bolt assembly and a latch bolt assembly are slidably mounted in and out of the lock box, the latch bolt assembly being provided with a latch bolt reset member, a lock core and a pull core being rotatable mounted on the lock housing, an upper latch bolt paddle and a lower latch bolt paddle being mounted on the pull core, one end of a latch bolt push plate being hinged to the upper latch bolt paddle and the other end being transmission-coordinated with the lock core, the upper latch bolt paddle being transmission-connected to the latch bolt assembly, a main bolt rotating piece being rotatable mounted on the lock box, the main bolt rotating piece being hinged to the lower latch bolt paddle via a driving connecting rod, the main bolt rotating piece being transmission-connected to the main bolt assembly. The present invention has fewer overall transmission parts, a simple transmission structure, low cost, and is easy to assemble. By means of a first transmission idle stroke and a second transmission idle stroke, the pull core and the lock core can be independently driven to enable the latch bolt assembly and the main bolt assembly to slide in and out of the lock housing, thereby achieving the purpose of rapid door opening and locking.

Description

Technical field:

[0001] The invention belongs to the technical field of door locks, and in particular relates to a lock body structure. Background technology:

[0002] As a lock body installed on a door panel, it mainly uses the door handle and key to control the lock bolt to extend and retract the lock shell panel to achieve the purpose of locking and unlocking. Currently, lock bodies are mainly divided into single-acting lock bodies, double-acting lock bodies, and double-acting double-quick lock bodies. Among them, single-acting lock bodies and double-acting lock bodies can only be locked and unlocked with the corresponding key, while the handle of the double-acting double-quick lock body can be turned downward for quick door opening and upward for quick locking, making it more convenient to use. However, most of the double-acting double-quick lock bodies currently on the market have complex structures, many transmission parts, high costs, and difficult assembly. Summary of the invention:

[0003] The object of the present invention is to provide a lock body structure, which has fewer transmission parts for overall transmission, a simple transmission structure, low cost and is easy to assemble.

[0004] The present invention is achieved in that:

[0005] A lock body structure includes a lock box and a lock body panel arranged on the lock box. A main lock bolt assembly and a tilted bolt assembly that can penetrate the lock body panel are slid in and out of the lock box. The tilted bolt assembly is provided with a tilted bolt reset member that drives the tilted bolt assembly to slide outward. A lock core and a pull core are rotatable on the lock box. An upper tilted bolt paddle and a lower tilted bolt paddle are sleeved on the pull core. One end of a tilted bolt push plate is hinged to the upper tilted bolt paddle and the other end is transmission-matched with the lock cylinder. The upper tilted bolt paddle is transmission-connected to the tilted bolt assembly, and the transmission between the pull core and the upper tilted bolt paddle, as well as between the pull core and the lower tilted bolt paddle, has a transmission idle stroke in opposite directions of rotation.

[0006] The lock box is provided with a main lock bolt rotating piece that rotates circumferentially around the axis of the lock core and cooperates with the lock bolt transmission. The main lock bolt rotating piece is hinged to the lower pick of the inclined bolt through a driving connecting rod. The main lock bolt rotating piece is transmission-connected to the main lock bolt assembly, and the transmission between the lock core and the main lock bolt rotating piece, as well as between the lock core and the inclined bolt push plate, has a transmission idle stroke.

[0007] The lock core drives the upper latch blade of the latch to rotate forward through the latch push plate or the pull core drives the upper latch blade to rotate forward, thereby driving the latch assembly to slide inward. The pull core drives the lower latch blade and the driving connecting rod or the lock core drives the main latch blade to rotate forward or reverse, thereby driving the main latch assembly to slide inward and outward.

[0008] In the above-mentioned lock body structure, an arc-shaped sliding hole is opened on the lock box around the axis of the lock core, and the main lock tongue rotating piece is slidably connected in the arc-shaped sliding hole through a connecting pin. A positioning spring is provided between the main lock tongue rotating piece and the lock box, and the positioning spring can drive the main lock tongue rotating piece to slide toward the end of the arc-shaped sliding hole.

[0009] In the above-mentioned lock body structure, three connecting pins are provided and distributed in a triangular shape, and the number and positions of the arc-shaped sliding holes correspond to the connecting pins.

[0010] In the above-mentioned lock body structure, the main lock tongue rotating piece is arranged on the lock core in an arc shape, the cam portion of the lock core is located between the two end surfaces of the main lock tongue rotating piece, and the distance between the cam portion of the lock core and the two end surfaces of the main lock tongue rotating piece forms a transmission idle stroke 2. When the cam portion of the lock core abuts against one of the end surfaces of the main lock tongue rotating piece, the lock core continues to rotate, thereby promoting the rotation of the main lock tongue rotating piece.

[0011] In the above-mentioned lock body structure, the main lock tongue assembly includes a driving plate and a lock head arranged on the front end of the driving plate, and a strip sliding hole 1 is opened on the inner and outer sides of the upper edge of the lock box or / and the driving plate, and the driving plate or / and the lock box is slidably connected to the corresponding strip sliding hole 1 through a connecting pin 2. The driving plate is provided with a track sliding hole 1, and a connecting pin 1 on the main lock tongue rotating plate penetrates and slides on the track sliding hole 1. The main lock tongue rotating plate drives the driving plate and the lock head to slide inward and outward through the cooperation between the connecting pin 1 and the track sliding hole 1.

[0012] In the above-mentioned lock body structure, a track slide hole 2 is opened in the middle of the oblique bolt push plate, and a limit member sliding on the track slide hole 2 is provided on the lock box. The end of the oblique bolt push plate that cooperates with the lock core for transmission is a free end and is provided with a baffle. The distance between the baffle and the cam portion of the lock core forms a transmission idle stroke 2.

[0013] In the above-mentioned lock body structure, a track sliding hole three is opened in the middle of the driving connecting rod, a connecting pin three is provided on the lock box and is slidably connected to the track sliding hole three, a strip sliding hole two is opened on the lower paddle of the oblique tongue, and the corresponding end of the driving connecting rod is slidably connected to the strip sliding hole two.

[0014] In the above-mentioned lock body structure, a reinforcement plate located on one side of the main lock tongue rotating piece is provided between the connecting pins, and the reverse rotation of the lock core can simultaneously exert a force on the main lock tongue rotating piece and the reinforcement plate.

[0015] In the above-mentioned lock body structure, the pull core is a cylindrical structure, and its outer wall surface is provided with a plurality of circumferentially evenly distributed positioning sections, and the upper paddle of the inclined tongue and the lower paddle of the inclined tongue are both provided with a rotating hole for being mounted on the pull core, and the hole wall of the rotating hole is provided with a limiting protrusion that is movable on the circumferential rotation angle corresponding to the positioning section, and a transmission idle distance is formed between the limiting protrusion and the corresponding edge of the positioning section.

[0016] In the above-mentioned lock body structure, the lock box is provided with an outer support plate for the inclined tongue assembly to pass through, and the inclined tongue assembly located on the inner side of the outer support plate is provided with an inner support plate that can slide with the inside and outside of the lock box, and the end of the paddle on the inclined tongue is located between the outer support plate and the inner support plate.

[0017] The advantages of the present invention compared to the prior art are:

[0018] The present invention has fewer overall transmission parts, a simple transmission structure, low cost and is easy to assemble. By means of the transmission idle stroke 1 between the pull core and the upper and lower shifting pieces of the inclined bolt, and the transmission idle stroke 2 between the lock core and the inclined bolt push plate 9 and the main lock bolt rotating piece, the pull core and the lock core can be driven independently to realize the inward and outward sliding of the inclined bolt assembly and the main lock bolt assembly, thereby achieving the purpose of rapid door opening and locking. Description of the drawings:

[0019] Figure 1 It is a top view of the overall transmission structure of the present invention;

[0020] Figure 2 It is a three-dimensional diagram of the overall transmission structure of the present invention;

[0021] Figure 3 This is a diagram showing the coordination of the lock core, main lock bolt rotating piece, reinforcement plate and oblique bolt push plate of the present invention;

[0022] Figure 4 It is an exploded view of the pull core, the oblique tongue upper pick and the oblique tongue lower pick of the present invention.

[0023] In the figure: 1. Lock box; 2. Lock body panel; 3. Main lock bolt assembly; 4. Slanted bolt assembly; 5. Lock core; 6. Pull core; 7. Upper paddle of the slanted bolt; 8. Lower paddle of the slanted bolt; 9. Slanted bolt push plate; 10. Main lock bolt rotating piece; 11. Driving connecting rod; 12. Arc-shaped sliding hole; 13. Connecting pin 1; 14. Positioning spring; 15. Driving plate; 16. Lock head; 17. Strip sliding hole 1; 18. Connecting pin 2; 19. Track sliding hole 1; 20. Track sliding hole 2; 21. Baffle; 22. Track sliding hole 3; 23. Connecting pin 3; 24. Strip sliding hole 2; 25. Reinforcement plate; 26. Positioning section; 27. Limiting protrusion; 28. Outer support plate; 29. ​​Inner support plate; 30. Positioning section relative to the positive side edge; 31. Positioning section relative to the negative side edge. Specific implementation method:

[0024] The present invention will be further described below with reference to specific embodiments. Figure 1 —4:

[0025] A lock body structure includes a lock box 1 and a lock body panel 2 provided on the lock box 1. A main lock bolt assembly 3 and a latch bolt assembly 4 that can penetrate the lock body panel 2 are slidably provided on the lock box 1. The latch bolt assembly 4 is provided with a latch bolt reset member that drives the latch bolt assembly 4 to slide outward. A lock cylinder 5 and a pull core 6 are rotatably provided on the lock box 1. The pull core 6 is provided with an upper latch bolt paddle 7 and a lower latch bolt paddle 8. One end of a latch bolt push plate 9 is hinged to the upper latch bolt paddle 7 and the other end is transmission-coordinated with the lock cylinder 5. The upper latch bolt paddle 7 is transmission-connected to the latch bolt assembly 4. The transmission between the pull core 6 and the upper latch bolt paddle 7, as well as between the pull core 6 and the lower latch bolt paddle 8, has a transmission idle stroke in the opposite direction of rotation.

[0026] The lock box 1 is provided with a main lock bolt rotating piece 10 which rotates circumferentially around the axis of the lock cylinder 5 and is in transmission cooperation with the lock cylinder 5. The main lock bolt rotating piece 10 is hinged to the lower latch paddle 8 through a driving connecting rod 11. The main lock bolt rotating piece 10 is transmission-connected to the main lock bolt assembly 3, and the transmission between the lock cylinder 5 and the main lock bolt rotating piece 10, as well as between the lock cylinder 5 and the latch bolt push plate 9, has a transmission idle stroke 2.

[0027] Due to the existence of transmission idle travel 1, when the pull core 6 rotates forward and drives the upper latch blade 7 to rotate forward, the lower latch blade 8 is not driven by the pull core 6 within the transmission idle travel 1. Conversely, when the pull core 6 rotates backward and drives the lower latch blade 8 to rotate backward, the upper latch blade 7 is not driven by the pull core 6 within the transmission idle travel 1. Regarding the lock cylinder 5, when the lock cylinder 5 rotates forward and drives the upper latch blade 7 forward through the latch blade push plate 9, the pull core 6 can avoid transmission interference. When the lock cylinder 5 rotates forward or backward and drives the main latch assembly 3 inward or outward sliding through the main latch rotor 10, the latch blade push plate 9 and drive connecting rod 11 will move accordingly, but the pull core 6 can avoid transmission interference.

[0028] Similar to the aforementioned transmission lost motion, due to the existence of the second transmission lost motion, when the pull core 6 rotates forward or reverse through the lower latch blade 8 and the drive connecting rod 11 to drive the main lock bolt rotor 10 to drive the main lock bolt assembly 3 to slide inward or outward, the lock cylinder 5 can avoid transmission interference with it. When the pull core 6 rotates forward through the upper latch blade 7 to drive the latch bolt assembly 4 to slide inward, and when the latch bolt reset member drives the latch bolt assembly 4 to slide outward, the latch bolt push plate 9 will move accordingly, but the lock cylinder 5 can avoid transmission interference with it. Regarding the lock cylinder 5, when the lock cylinder 5 rotates forward to drive the latch bolt push plate 9 to move, the main lock bolt rotor 10 is not driven by the lock cylinder 5 within the second transmission lost motion. When the lock cylinder 5 rotates reversely, driving the main lock bolt rotor 10 in the reverse direction, the latch bolt push plate 9 is not driven by the lock cylinder 5 within the second transmission lost motion.

[0029] Its working principle is:

[0030] 1. Inward and outward sliding of the latch bolt assembly 4: The pull core 6 drives the latch bolt upper paddle 7 to rotate forward together to drive the latch bolt assembly 4 to slide inward, or the lock cylinder 5 rotates forward through the latch bolt push plate 9 and the latch bolt upper paddle 7 to drive the latch bolt assembly 4 to slide inward; the elastic force of the latch bolt reset member drives the latch bolt assembly 4 to slide outward, and the latch bolt push plate 9 and the latch bolt upper paddle 7 can be reset.

[0031] When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and outer sliding. When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and outer sliding. When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and outer sliding. When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and outer sliding. When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and inner sliding. When the main lock bolt assembly 3 is in the inner and outer sliding, the main lock bolt assembly 3 is in the inner and inner sliding.

[0032] The present invention has fewer overall transmission parts, a simple transmission structure, low cost and is easy to assemble. By means of the transmission idle stroke 1 between the pull core 6 and the upper and lower latch bolt paddles 7 and 8, and the transmission idle stroke 2 between the lock core 5 and the latch bolt push plate 9 and the main latch bolt rotating piece 10, the pull core 6 and the lock core 5 can be driven independently to realize the inward and outward sliding of the latch bolt assembly 4 and the main latch bolt assembly 3, thereby achieving the purpose of rapid door opening and locking.

[0033] Furthermore, in order to prevent the main lock bolt assembly 3 from moving only halfway during the inward and outward sliding process, resulting in an inability to effectively lock or open the door, an arc-shaped sliding hole 12 is formed on the lock box 1 around the axis of the lock cylinder 5. The main lock bolt rotating piece 10 is slidably connected to the arc-shaped sliding hole 12 via a connecting pin 13. A positioning spring 14 is provided between the main lock bolt rotating piece 10 and the lock box 1, and the positioning spring 14 can drive the main lock bolt rotating piece 10 to slide toward the end of the arc-shaped sliding hole 12. The positioning spring 14 can be a compression spring or a tension spring, with one end of the positioning spring 14 fixed to the connecting pin 13 and the other end directly fixed to the lock box 1. In this embodiment, the positioning spring 14 is a torsion spring, with one end of the torsion spring sleeved on the connecting pin 13 and the other end sleeved on the connecting pin 2 18 fixed to the lock box 1.

[0034] At the same time, in order to improve the rotational stability of the main lock bolt rotor 10 on the lock box 1, three connecting pins 13 are provided and distributed in a triangular pattern. The number and position of the arc-shaped sliding holes 12 correspond to the connecting pins 13. In other words, the triangular distribution structure formed by the three connecting pins 13 enables the main lock bolt rotor 10 to rotate stably in the circumferential direction on the lock box 1.

[0035] In order to ensure that the transmission between the lock core 5 and the main lock tongue rotor 10 has a transmission idle stroke 2, the matching structure of the main lock tongue rotor 10 and the lock core 5 can be: an arc-shaped through hole is opened on the main lock tongue rotor 10, and a slider is provided on the lock core 5 that is slidably connected to the arc-shaped through hole, and then a transmission idle stroke 2 is formed between the slider and the two end surfaces of the arc-shaped through hole. In this embodiment, the structure of the lock core 5 adopts the existing design and is a cam structure. The main lock tongue rotor 10 is circularly sleeved on the lock core 5, and the cam portion of the lock core 5 is located between the two end surfaces of the main lock tongue rotor 10, and the distance between the cam portion of the lock core 5 and the two end surfaces of the main lock tongue rotor 10 forms a transmission idle stroke 2. When the cam portion of the lock core 5 abuts against one of the end surfaces of the main lock tongue rotor 10, the lock core 5 continues to rotate, thereby promoting the rotation of the main lock tongue rotor 10.

[0036] Similarly, the second transmission idle distance between the latch bolt push plate 9 and the lock cylinder 5 can be achieved by defining an arcuate through-hole on the latch bolt push plate 9 and a slider on the lock cylinder 5 that slides within the arcuate through-hole. This creates a second transmission idle distance between the slider and the end surfaces of the arcuate through-hole. In this embodiment, a second track slide hole 20 is defined in the center of the latch bolt push plate 9. The lock box 1 is provided with a stopper that slides within the track slide hole 20. The end of the latch bolt push plate 9 that engages the lock cylinder 5 is a free end and is provided with a stopper 21. The distance between the stopper 21 and the cam portion of the lock cylinder 5 creates the second transmission idle distance. Furthermore, the stopper can be a pin. In this embodiment, to reduce the number of parts and thus lower costs, the stopper is located on a second connecting pin 18 fixed to the lock box 1.

[0037] In order to improve the reliability of the lock core 5 driving the main lock tongue assembly 3 to slide outward to achieve rapid locking, a reinforcement plate 25 is provided between the connecting pin 13 and is located on one side of the main lock tongue rotating piece 10. The reverse rotation of the lock core 5 can simultaneously exert a force on the main lock tongue rotating piece 10 and the reinforcement plate 25, that is, the reinforcement plate 25 increases the effective area of ​​the lock core 5 driving the main lock tongue assembly 3 to slide outward.

[0038] Furthermore, in order to enable the main lock tongue rotor 10 to stably drive the main lock tongue assembly 3 to slide inward and outward, the specific structure of the main lock tongue assembly 3 and the relationship between the main lock tongue rotor 10 is as follows: the main lock tongue assembly 3 includes a driving plate 15 and a lock head 16 arranged on the front end of the driving plate 15, and the lock box 1 and the driving plate 15 are both provided with a strip sliding hole 17 along the inside and outside, and the driving plate 15 and the lock box 1 are both slidably connected to the corresponding strip sliding hole 17 through a connecting pin 2 18, and the driving plate 15 is provided with a track sliding hole 19, and in order to reduce the number of parts and reduce costs, the connecting pin 13 on the main lock tongue rotor 10 passes through and slides on the track sliding hole 19, and the main lock tongue rotor 10 drives the driving plate 15 and the lock head 16 to slide inward and outward through the cooperation of the connecting pin 13 and the track sliding hole 19.

[0039] Furthermore, in order to enable the pull core 6 to stably push the main lock tongue rotating piece 10 to rotate forward or reverse, a track sliding hole three 22 is opened in the middle of the driving link 11, and a connecting pin three 23 is provided on the lock box 1, which is slidably connected to the track sliding hole three 22, and a strip sliding hole two 24 is opened on the oblique tongue lower paddle 8. The corresponding end of the driving link 11 is slidably connected to the strip sliding hole two 24, and the other end of the driving link 11 is hinged to one of the connecting pins 13 on the main lock tongue rotating piece 10.

[0040] Furthermore, similar to the aforementioned transmission idle distance 2, the transmission idle distance 1 between the pull core 6 and the upper and lower latch paddles 7 and 8 can be achieved by defining an arcuate through-hole in the upper and lower latch paddles 7 and 8, and providing a slider slidably connected within the arcuate through-hole in the pull core 6, thereby forming a transmission idle distance 1 between the slider and the end surfaces of the arcuate through-hole. In this embodiment, the pull core 6 is a cylindrical structure, and its outer wall is provided with a plurality of circumferentially evenly distributed positioning sections 26. The upper and lower latch paddles 7 and 8 are each provided with a rotary hole for being mounted on the pull core 6. The walls of the rotary hole are provided with a limiting protrusion 27 that moves at the circumferential corner corresponding to the positioning section 26, and the transmission idle distance 1 is formed between the limiting protrusion 27 and the corresponding edge of the positioning section 26. That is, a transmission idle distance of one is formed between the limiting protrusion 27 on the upper paddle 7 of the oblique tongue and the positive side edge 30 of the positioning section, and a transmission idle distance of one is formed between the limiting protrusion 27 on the lower paddle 8 of the oblique tongue and the reverse side edge 31 of the positioning section.

[0041] In this embodiment, the latch bolt assembly 4 directly adopts the existing structure. In order to enable the upper latch blade 7 to rotate forward and drive the latch bolt assembly 4 downward, the lock box 1 is provided with an outer support plate 28 for the latch bolt assembly 4 to pass through. The latch bolt assembly 4 is provided with an inner support plate 29 located inside the outer support plate 28 and capable of slidingly cooperating with the lock box 1. The end of the upper latch blade 7 is located between the outer support plate 28 and the inner support plate 29. The latch bolt reset member can be a compression spring sleeved on the latch bolt assembly 4, with one end of the compression spring restoring against the latch bolt assembly 4 and the other end resting against the outer support plate 28.

[0042] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lock structure, comprising a lock box (1), and a lock panel (2) provided on the lock box (1), wherein a main lock bolt assembly (3) and a latch bolt assembly (4) capable of penetrating the lock panel (2) are slidably provided on the lock box (1), the latch bolt assembly (4) being provided with a latch bolt reset member for driving the latch bolt assembly (4) to slide outward, and a lock core (5) and a pull core (6) being rotatably provided on the lock box (1), characterized in that: The pull core (6) is provided with an upper latch pick (7) and a lower latch pick (8), one end of the latch push plate (9) is hinged to the upper latch pick (7), and the other end is transmission-coordinated with the lock core (5), the upper latch pick (7) is transmission-connected to the latch assembly (4), and the transmission between the pull core (6) and the upper latch pick (7), and between the pull core (6) and the lower latch pick (8) has a transmission idle stroke in the opposite direction of rotation. The lock box (1) is provided with a main lock bolt rotating piece (10) which rotates circumferentially around the axis of the lock core (5) and is transmission-coordinated with the lock core (5). The main lock bolt rotating piece (10) is hinged to the oblique bolt lower paddle (8) through a driving connecting rod (11). The main lock bolt rotating piece (10) is transmission-connected to the main lock bolt assembly (3). The transmission between the lock core (5) and the main lock bolt rotating piece (10), as well as between the lock core (5) and the oblique bolt push plate (9), all have transmission idle stroke 2. The lock core (5) drives the upper latch blade (7) of the latch bolt through the latch bolt push plate (9) or the pull core (6) to rotate forward, thereby driving the latch bolt assembly (4) to slide inward. The pull core (6) drives the lower latch blade (8) and the driving connecting rod (11) or the lock core (5) drives the main latch bolt rotating piece (10) to rotate forward or reverse, thereby driving the main latch bolt assembly (3) to slide inward and outward. An arc-shaped sliding hole (12) is provided on the lock box (1) around the axis of the lock core (5); the main lock tongue rotating piece (10) is slidably connected in the arc-shaped sliding hole (12) via a connecting pin (13); a positioning spring (14) is provided between the main lock tongue rotating piece (10) and the lock box (1), and the positioning spring (14) can drive the main lock tongue rotating piece (10) to slide toward the end of the arc-shaped sliding hole (12); A second track slide hole (20) is provided in the middle of the oblique tongue push plate (9), and a limiting member sliding on the second track slide hole (20) is provided on the lock box (1). The end of the oblique tongue push plate (9) that is in transmission engagement with the lock cylinder (5) is a free end and is provided with a baffle (21). The distance between the baffle (21) and the cam portion of the lock cylinder (5) forms a second transmission idle stroke.

2. The lock structure according to claim 1, characterized in that: The connecting pins (13) are provided in three numbers and are distributed in a triangular shape, and the number and position of the arc-shaped sliding holes (12) correspond to the connecting pins (13).

3. The lock structure according to claim 1, characterized in that: The main lock tongue rotating piece (10) is sleeved on the lock core (5) in an arc shape, the cam portion of the lock core (5) is located between the two end surfaces of the main lock tongue rotating piece (10), and the distance between the cam portion of the lock core (5) and the two end surfaces of the main lock tongue rotating piece (10) forms a transmission idle stroke 2. When the cam portion of the lock core (5) abuts against one end surface of the main lock tongue rotating piece (10), the lock core (5) continues to rotate, thereby promoting the rotation of the main lock tongue rotating piece (10).

4. A lock body structure according to claim 1 or 2, characterized in that: The main lock tongue assembly (3) includes a driving plate (15) and a lock head (16) arranged on the front end of the driving plate (15); a strip-shaped sliding hole (17) is provided on the inner and outer edges of the lock box (1) or / and the driving plate (15); the driving plate (15) or / and the lock box (1) is slidably connected to the corresponding strip-shaped sliding hole (17) through a connecting pin (18); a track sliding hole (19) is provided on the driving plate (15); a connecting pin (13) on the main lock tongue rotating plate (10) passes through and slidably fits on the track sliding hole (19); the main lock tongue rotating plate (10) drives the driving plate (15) and the lock head (16) to slide inside and outside through the matching of the connecting pin (13) and the track sliding hole (19).

5. The lock body structure according to claim 1, characterized in that: A track sliding hole three (22) is provided in the middle of the driving connecting rod (11), a connecting pin three (23) is provided on the lock box (1) and is slidably connected to the track sliding hole three (22), a strip sliding hole two (24) is provided on the oblique tongue lower paddle (8), and the corresponding end of the driving connecting rod (11) is slidably connected to the strip sliding hole two (24).

6. The lock structure according to claim 2, characterized in that: A reinforcing plate (25) located on one side of the main lock tongue rotating piece (10) is provided between the connecting pins (13), and the lock core (5) can simultaneously exert a force on the main lock tongue rotating piece (10) and the reinforcing plate (25) when the lock core (5) rotates in the opposite direction.

7. The lock structure according to claim 1, characterized in that: The pull core (6) is a columnar structure, and a plurality of circumferentially uniformly distributed positioning sections (26) are provided on its outer wall surface. The upper paddle (7) of the inclined tongue and the lower paddle (8) of the inclined tongue are both provided with a rotating hole for being mounted on the pull core (6). A limiting protrusion (27) is provided on the wall of the rotating hole, which is movable on the circumferential rotation angle corresponding to the positioning section (26). A transmission idle distance is formed between the limiting protrusion (27) and the corresponding edge of the positioning section (26).

8. The lock structure according to claim 1, characterized in that: The lock box (1) is provided with an outer support plate (28) for the oblique tongue assembly (4) to pass through, and the oblique tongue assembly (4) located on the inner side of the outer support plate (28) is provided with an inner support plate (29) that can slide with the lock box (1) inside and outside, and the end of the paddle (7) on the oblique tongue is located between the outer support plate (28) and the inner support plate (29).

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