Transmission assembly transmission link structure lock body

Abstract

This invention provides a lock body with a transmission component and transmission link structure, belonging to the field of door lock technology. It includes: a lock shell, with a main bolt movable inside the lock shell along the X-axis; an upper link and a lower link, movable inside the lock shell along the Y-axis; a transmission component rotatably connected to the lock shell, the transmission component being rotatably connected to the upper and lower links, the transmission component rotating to drive the upper and lower links to move in opposite directions along the Y-axis; the transmission component being rotatably connected to the main bolt, the transmission component rotating to drive the main bolt to reciprocate along the X-axis; the lock body with the transmission component and transmission link structure of this invention, through the transmission between the transmission component and the upper and lower links and the main bolt, is all rotational transmission, which, compared to the traditional sliding transmission with inclined guide grooves, reduces force loss, making opening and locking feel lighter and easier to operate.

Description

Technical Field

[0001] This invention relates to the field of door lock technology, and specifically to a lock body with a transmission component and transmission linkage structure. Background Technology

[0002] A door lock has a main bolt, a secondary bolt, and a locking plate. These bolts are generally linked together.

[0003] For example, Chinese patent document CN217538210U discloses a linkage structure for an anti-jamming lock body, which includes a main lock tongue, a secondary lock tongue, and a top and bottom lock plate. The main lock tongue is driven to extend and retract by the rotation of a transmission plate. The top and bottom lock plates and the main lock tongue are connected by an inclined guide groove. When the main lock tongue extends and retracts, it drives the top and bottom lock plates to extend and retract up and down.

[0004] However, in the above scheme, the main bolt drives the locking plate through the inclined guide groove. Due to the large frictional resistance, the operation of opening and closing the door is relatively laborious. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the main bolt and the top and bottom lock plates in the prior art are linked by inclined guide grooves, resulting in laborious operation, and thus provide a transmission component and transmission linkage structure lock body that is more labor-saving to operate.

[0006] To address the aforementioned technical problems, the present invention provides a transmission component transmission link structure lock body, comprising:

[0007] A lock case, wherein a main lock tongue is provided inside the lock case and is movable along the X-axis direction;

[0008] The upper and lower connecting rods are movably disposed within the lock housing along the Y-axis direction;

[0009] A transmission assembly is rotatably connected to the lock housing. The transmission assembly is rotatably connected to the upper connecting rod and the lower connecting rod. The transmission assembly drives the upper connecting rod and the lower connecting rod to move relative to each other in opposite directions along the Y-axis direction by rotation.

[0010] The transmission component is rotatably connected to the main locking tongue, and the transmission component drives the main locking tongue to reciprocate along the X-axis direction by rotating.

[0011] Optionally, the transmission assembly has two transmission plates arranged in parallel and spaced apart, and an actuating element for driving the main locking tongue is provided between the two transmission plates.

[0012] Optionally, the main latch has a tail drive plate, which is inserted between the two transmission plates, and the tail drive plate is provided with a first drive hole that cooperates with the actuating member.

[0013] Optionally, the first driving hole is a frame-shaped structure, and the first driving hole has a central positioning area for accommodating the toggle member. The central positioning area is a rectangular frame structure that protrudes radially outward along the first driving hole.

[0014] Optionally, side positioning areas are provided on both sides of the middle positioning area of ​​the first driving hole, and the combination of the two side positioning areas forms a rhombus frame structure.

[0015] Optionally, the tail drive plate of the main locking tongue is provided with a first strip groove extending along the X-axis direction, and the rotating shafts of the two transmission plates pass through the first strip groove.

[0016] Optionally, the transmission assembly has two symmetrically arranged lower drive columns on the side facing the upper and lower connecting rods.

[0017] Optionally, the upper connecting rod and the lower connecting rod each have a second driving hole that mates with the lower driving column.

[0018] Optionally, the second drive hole has three positioning areas for accommodating the lower drive post, and the three positioning areas are semi-circular holes that protrude radially outward along the second drive hole.

[0019] Optionally, the side of the transmission assembly away from the upper and lower connecting rods has two symmetrically arranged upper drive columns.

[0020] Optionally, the housing has two push plates arranged side by side, which are movably disposed within the lock housing along the Y-axis direction. Each of the two push plates has an upper pushing surface for cooperating with the upper drive column.

[0021] Optionally, the ends of the two push plates furthest from the transmission assembly each have a lower pushing surface.

[0022] Optionally, a lock cylinder dial is rotatably provided inside the lock housing. The lock cylinder dial has a paddle that protrudes radially outward. When the lock cylinder dial is rotated, the paddle engages with the lower pushing surfaces of the two push plates respectively.

[0023] Optionally, the transmission assembly is covered with a reset pressure plate, the reset pressure plate is provided with an arc-shaped groove for passing through the upper drive column, the reset pressure plate is connected with a reset elastic element, the reset elastic element is connected to the upper drive column, and the reset elastic element has an elastic force that drives the upper drive column to move toward both ends of the arc-shaped groove.

[0024] Optionally, a secondary latch is movably disposed inside the lock housing along the X-axis direction, and a secondary transmission plate is rotatably disposed inside the lock housing. The secondary transmission plate is rotatably connected to the upper connecting rod or the lower connecting rod, and the secondary transmission plate rotates under the drive of the upper connecting rod or the lower connecting rod. The secondary transmission plate is slidably connected to the secondary latch, and the secondary latch reciprocates under the drive of the secondary transmission plate.

[0025] Optionally, the secondary locking tongue has a slanted groove, and the secondary transmission plate has a sliding pin inserted into the slanted groove.

[0026] The technical solution of this invention has the following advantages:

[0027] 1. The transmission component and transmission link structure lock body provided by the present invention directly drives the upper and lower links to move in opposite directions by rotating the transmission component. By directly driving the main lock tongue, the main lock tongue moves back and forth along the X-axis. Since the transmission between the transmission component, the upper and lower links and the main lock tongue are all rotational transmissions, compared with the traditional sliding transmission of the inclined guide groove, the force loss can be reduced, making the opening and locking feel lighter and the operation less strenuous.

[0028] 2. The transmission component and transmission linkage structure lock body provided by the present invention are further provided with a secondary lock tongue. The secondary lock tongue is driven by the movement of the upper and lower linkages, specifically by the rotation of the secondary transmission plate. Compared with the traditional sliding transmission of the inclined guide groove, it can reduce the loss of force, making the opening and locking feel lighter and the operation less strenuous. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a front view of a specific embodiment of the internal structure of the transmission component, transmission link structure, and lock body provided in an embodiment of the present invention.

[0031] Figure 2 for Figure 1 A schematic diagram of the reset pressure plate of the hidden transmission component;

[0032] Figure 3 for Figure 2 A diagram showing two hidden push plates;

[0033] Figure 4 for Figure 3 A schematic diagram showing the hidden upper transmission plate;

[0034] Figure 5 for Figure 4 A schematic diagram showing the hidden main bolt;

[0035] Figure 6 for Figure 5 A schematic diagram showing the hidden lower transmission plate.

[0036] Figure 7 for Figure 3 A 3D view of the upper and middle transmission plates;

[0037] Figure 8 for Figure 5 A three-dimensional view of the lower transmission plate.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Lock housing; 2. Main bolt; 3. Upper connecting rod; 4. Lower connecting rod; 5. Transmission assembly; 6. Upper transmission plate; 7. Lower transmission plate; 8. Actuating element; 9. First drive hole; 10. Intermediate positioning area; 11. First slot; 12. Rotating shaft; 13. Upper drive column; 14. Lower drive column; 15. Second drive hole; 16. Push plate; 17. Upper abutment surface; 18. Lower abutment surface; 19. Reset pressure plate; 20. Arc groove; 21. Reset elastic element; 22. Secondary bolt; 23. Secondary transmission plate; 24. First sliding column; 25. Mounting groove; 26. Second sliding column; 27. Inclined groove; 28. Lock cylinder dial. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] like Figure 1-6 The diagram illustrates a specific embodiment of the transmission component and linkage structure lock body provided in this embodiment, comprising: a lock housing 1, a main bolt 2, an upper linkage 3, a lower linkage 4, and a transmission component 5. The main bolt 2 is movably disposed inside the lock housing 1 along the X-axis direction. The upper linkage 3 and the lower linkage 4 are movably disposed inside the lock housing 1 along the Y-axis direction. The transmission component 5 is rotatably connected to the lock housing 1 and is rotatably connected to the upper linkage 3 and the lower linkage 4. Rotation of the transmission component 5 drives the upper linkage 3 and the lower linkage 4 to move in opposite directions along the Y-axis direction. Rotation of the transmission component 5 also drives the main bolt 2 to reciprocate along the X-axis direction. In other words, the transmission component 5 is rotatably connected to the main locking tongue 2, the upper connecting rod 3, and the lower connecting rod 4. Thus, when the transmission component 5 rotates, it drives the main locking tongue 2 to reciprocate along the X-axis, and at the same time drives the upper connecting rod 3 and the lower connecting rod 4 to move in opposite directions along the Y-axis.

[0045] The transmission component and transmission linkage structure lock body provided in this embodiment directly drives the upper and lower linkages 4 to move in opposite directions through the rotation of the transmission component 5. By directly driving the main lock tongue 2, the main lock tongue 2 reciprocates along the X-axis. Since the transmission between the transmission component 5, the upper and lower linkages 4, and the main lock tongue 2 are all rotational transmissions, compared with the traditional sliding transmission of the inclined guide groove, it can reduce force loss, making the opening and locking feel lighter and the operation less strenuous.

[0046] like Figure 3 , Figure 4As shown, in the transmission assembly and linkage structure lock body provided in this embodiment, the transmission assembly 5 has two transmission plates arranged in parallel and spaced apart, specifically including an upper transmission plate 6 and a lower transmission plate 7. An actuating element 8 for driving the main latch 2 is disposed between the two transmission plates. The main latch 2 has a tail drive plate, which is inserted between the two transmission plates. The tail drive plate has a first drive hole 9 that cooperates with the actuating element 8. During operation, the actuating element 8 is inserted into the first drive hole 9. As the two transmission plates rotate clockwise or counterclockwise, the actuating element 8 actuates the main latch 2 to reciprocate along the X direction. This embodiment clamps the tail drive plate of the main latch 2 with two transmission plates, thereby achieving more stable driving when driving the main latch 2 to move, thus saving thrust.

[0047] like Figure 4 As shown, in the transmission linkage structure lock body of the transmission assembly provided in this embodiment, the first drive hole 9 is a frame-shaped structure, and the first drive hole 9 has a middle positioning area 10 for accommodating the actuating member 8. The middle positioning area 10 is a rectangular frame structure that protrudes radially outward along the first drive hole 9. During operation, the actuating member 8 pushes the main locking tongue 2 to reciprocate along the X direction within the middle positioning area 10.

[0048] like Figure 4 As shown, the middle positioning area 10 of the first driving hole 9 is provided with side positioning areas on both sides, and the combination of the two side positioning areas forms a rhombus frame structure. With this setting, when the actuating piece pushes the main locking tongue 2 to the locked out or locked in position, the actuating piece disengages from the middle positioning area 10 and swings to the side positioning area, thereby locking the actuating piece through the side positioning area, preventing the main locking tongue 2 from driving the transmission component 5 in the opposite direction, and ensuring the safety of locking out or locking in.

[0049] like Figure 4 As shown, in the transmission linkage structure lock body of the transmission assembly provided in this embodiment, the tail drive plate is provided with a first strip groove 11 extending along the X-axis direction, and the rotating shafts 12 of the two transmission plates pass through the first strip groove 11. The rotating shafts 12 of the two transmission plates are mounted on the lock housing 1. During operation, the rotating shafts 12 do not move. When the transmission plate rotates, it drives the main lock tongue 2 to reciprocate along the X-axis direction. The first strip groove 11 on the tail drive plate of the main lock tongue 2 can guide the movement of the main lock tongue 2, thereby ensuring the stability of the main lock tongue 2 when locking or unlocking.

[0050] like Figure 5 , Figure 8As shown, in the transmission assembly and linkage structure lock body provided in this embodiment, the side of the transmission assembly 5 facing the upper linkage 3 and the lower linkage 4 has two symmetrically arranged lower drive columns 14. Specifically, the transmission assembly 5 includes an upper transmission plate 6 and a lower transmission plate 7 arranged in parallel intervals. On the side of the lower transmission plate 7 away from the upper transmission plate 6, two lower drive columns 14 are symmetrically arranged, and the two lower drive columns 14 are symmetrically arranged relative to the rotating shaft 12 of the transmission assembly 5. During operation, the two lower drive columns 14 are used to connect the upper linkage 3 and the lower linkage 4 respectively. When the transmission assembly 5 rotates, it drives the two lower drive columns 14 to swing, thereby driving the upper linkage 3 and the lower linkage 4 to slide in opposite directions along the Y-axis. It should be noted that, as Figure 5 As shown, the two lower drive columns 14 on the lower transmission plate 7 protrude toward the upper connecting rod 3 and the lower connecting rod 4. The figure shows the back of the lower drive column 14.

[0051] like Figure 6 As shown, in the transmission assembly and linkage structure lock body provided in this embodiment, the upper linkage 3 and the lower linkage 4 each have a second drive hole 15 that cooperates with the lower drive post 14. When the lower transmission plate 7 of the transmission assembly 5 is assembled with the upper linkage 3 and the lower linkage 4 respectively, the two lower drive posts 14 on the lower transmission plate 7 are respectively inserted into the two second drive holes 15. In use, the rotation of the transmission assembly 5 causes the two lower drive posts 14 on the lower transmission plate 7 to swing, thereby driving the upper linkage 3 and the lower linkage 4 to slide in opposite directions along the Y-axis.

[0052] like Figure 6 As shown, the second drive hole 15 has three positioning areas for accommodating the lower drive post 14. Each of the three positioning areas is a semi-circular hole protruding radially outward from the second drive hole 15. With these three positioning areas, during rotation of the transmission assembly 5, the lower drive post 14 on the lower transmission plate 7 is located in the middle positioning area of ​​the second drive hole 15, thereby driving the upper connecting rod 3 and the lower connecting rod 4. When the upper connecting rod 3 and the lower connecting rod 4 reach the locked-in or locked-out position, the lower drive post 14 moves to the positioning areas located at both ends of the second drive hole 15, thereby locking the upper connecting rod 3 and the lower connecting rod 4, preventing the upper connecting rod 3 and the lower connecting rod 4 from driving the transmission assembly 5 to rotate in the opposite direction, and ensuring the safety of the upper connecting rod 3 and the lower connecting rod 4 after locking in or out.

[0053] like Figure 2 , Figure 7As shown, in the transmission assembly linkage structure lock body provided in this embodiment, the side of the transmission assembly 5 away from the upper link 3 and the lower link 4 has two symmetrically arranged upper drive columns 13. Specifically, the transmission assembly 5 includes an upper transmission plate 6 and a lower transmission plate 7 arranged in parallel intervals. On the side of the upper transmission plate 6 away from the lower transmission plate 7, two upper drive columns 13 are symmetrically arranged, and the two upper drive columns 13 are symmetrically arranged relative to the rotating shaft 12 of the transmission assembly 5. During operation, by pushing one of the two upper drive columns 13, the transmission assembly 5 can rotate clockwise or counterclockwise around the rotating shaft 12.

[0054] like Figure 2 As shown, the housing has two push plates 16 arranged side by side. The two push plates 16 are movably disposed within the lock housing 1 along the Y-axis direction. Each push plate 16 has an upper pushing surface 17 for engaging with the upper drive column 13. During operation, the two push plates 16 move in opposite directions. When one push plate 16 pushes one upper drive column 13 on the upper transmission plate 6, the upper transmission plate 6 can rotate clockwise or counterclockwise; when the other push plate 16 pushes the other upper drive column 13 on the upper transmission plate 6, the upper transmission plate 6 can rotate in the opposite direction. Thus, through the above arrangement, the transmission assembly 5 is driven to rotate via the two push plates 16.

[0055] like Figure 2 As shown, in the transmission linkage structure lock body of the transmission assembly provided in this embodiment, the ends of the two push plates 16 away from the transmission assembly 5 each have a lower abutment surface 18. This lower abutment surface facilitates the driving of the two push plates 16. Specifically, by abutting against any one of the lower abutment surfaces, the corresponding push plate 16 can be driven to slide along the Y-axis, thereby pushing the transmission assembly 5 to rotate.

[0056] like Figure 2 As shown, in the transmission linkage structure lock body of the transmission component provided in this embodiment, a lock cylinder deflector 28 is rotatably provided inside the lock housing 1. The lock cylinder deflector 28 has a deflector plate that protrudes radially outward. When the lock cylinder deflector 28 is rotated, the deflector plate engages with the lower abutting surfaces 18 of the two push plates 16 respectively. Specifically, when the lock cylinder deflector 28 rotates counterclockwise, the deflector plate engages with the lower abutting surface at the bottom of the right push plate 16, pushing the right push plate 16 upward, thereby causing the push plate 16 to push the upper transmission plate 6 to rotate counterclockwise; when the lock cylinder deflector 28 rotates clockwise, the deflector plate engages with the lower abutting surface at the bottom of the left push plate 16, pushing the left push plate 16 upward, thereby causing the push plate 16 to push the upper transmission plate 6 to rotate clockwise.

[0057] like Figure 1 As shown, in the transmission assembly linkage structure lock body provided in this embodiment, the transmission assembly 5 is covered with a reset pressure plate 19. The reset pressure plate 19 is provided with an arc-shaped groove 20 for passing through the upper drive column 13. A reset elastic element 21 is connected to the reset pressure plate 19 and is connected to the upper drive column 13. The reset elastic element 21 has an elastic force that drives the upper drive column 13 to move toward both ends of the arc-shaped groove 20. Specifically, the reset elastic element 21 is a torsion spring, one end of which is connected to the reset pressure plate 19, and the other end is connected to the upper drive column 13. The middle of the torsion spring is not restricted. With this configuration, when the upper drive column 13 slides in the arc-shaped groove 20 to the middle position of the arc-shaped groove 20, the elastic force of the reset elastic element 21 generates potential energy that causes the upper drive column 13 to move toward both ends of the arc-shaped groove 20. Thus, through the setting of the reset elastic element 21, the upper drive column 13 can be accurately held at both ends of the arc-shaped groove 20.

[0058] like Figure 1 As shown, in the transmission linkage structure lock body of the transmission component provided in this embodiment, a secondary lock tongue 22 is movably provided inside the lock housing 1 along the X-axis direction. A secondary transmission plate 23 is rotatably provided inside the lock housing 1. The secondary transmission plate 23 is rotatably connected to the upper connecting rod 3 or the lower connecting rod 4. The secondary transmission plate 23 rotates under the drive of the upper connecting rod 3 or the lower connecting rod 4. The secondary transmission plate 23 is slidably connected to the secondary lock tongue 22. The secondary lock tongue 22 reciprocates under the drive of the secondary transmission plate 23. Specifically, the auxiliary transmission plate 23 is rotatably mounted inside the lock housing 1. The auxiliary transmission plate 23 has a mounting groove 25. The upper connecting rod 3 and the lower connecting rod 4 are respectively provided with a first sliding pin 24. The first sliding pin 24 is inserted into the mounting groove 25 of the auxiliary transmission plate 23. The inner diameter of the mounting groove 25 is larger than the outer diameter of the first sliding pin 24 that it cooperates with. Thus, when the upper connecting rod 3 and the lower connecting rod 4 move linearly along the Y-axis, they can drive the auxiliary transmission plate 23 to rotate.

[0059] like Figure 1 As shown, the secondary locking tongue 22 has a groove 27, and the secondary transmission plate 23 has a sliding post inserted into the groove 27. Specifically, the secondary locking tongue 22 has a tail drive plate with a groove 27, and the secondary transmission plate 23 has a second sliding post 26 for inserting into the groove 27. When the secondary transmission plate 23 rotates, the second sliding post 26 drives the secondary locking tongue 22 to reciprocate along the X-axis direction. During this process, the second sliding post 26 slides within the groove 27. The groove 27 effectively converts the rotational movement of the secondary transmission plate 23 into the lateral sliding movement of the secondary locking tongue 22.

[0060] Working principle

[0061] like Figure 1-6 As shown, when the lock body is locked, the lock cylinder dial 28 is turned counterclockwise. The paddle on the lock cylinder dial 28 pushes the push plate 16 located on the right side upward. The transmission assembly 5 rotates counterclockwise under the push of the push plate 16 on the right side. The actuating element 8 on the transmission assembly 5 cooperates with the main lock tongue 2, causing the main lock tongue 2 to lock out to the left. At the same time, the lower drive column 14 on the transmission assembly 5 cooperates with the upper connecting rod 3 and the lower connecting rod 4, causing the upper connecting rod 3 to lock upward and the lower connecting rod 4 to lock downward. Thus, locking is completed.

[0062] like Figure 1-6 As shown, when the lock body is opened, the lock cylinder dial 28 is turned clockwise. The paddle on the lock cylinder dial 28 pushes the push plate 16 located on the left side upward. The transmission assembly 5 rotates clockwise under the push of the push plate 16 on the left side. The actuating element 8 on the transmission assembly 5 cooperates with the main lock tongue 2, causing the main lock tongue 2 to lock to the right. At the same time, the lower drive column 14 on the transmission assembly 5 cooperates with the upper connecting rod 3 and the lower connecting rod 4, causing the upper connecting rod 3 to lock downward and the lower connecting rod 4 to lock upward. Thus, the unlocking is completed.

[0063] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A lock body for a transmission component and transmission linkage structure, characterized in that, include: Lock housing (1), the interior of which is provided with a main lock tongue (2) that moves along the X-axis; The upper connecting rod (3) and the lower connecting rod (4) are movably disposed within the lock housing (1) along the Y-axis direction; The transmission assembly (5) is rotatably connected to the lock housing (1). The transmission assembly (5) is rotatably connected to the upper connecting rod (3) and the lower connecting rod (4). The transmission assembly (5) drives the upper connecting rod (3) and the lower connecting rod (4) to move relative to each other in opposite directions along the Y-axis by rotation. The transmission assembly (5) is rotatably connected to the main locking tongue (2). The transmission assembly (5) drives the main locking tongue (2) to reciprocate along the X-axis direction by rotation. The side of the transmission assembly (5) away from the upper connecting rod (3) and the lower connecting rod (4) has two symmetrically arranged upper drive columns (13). The lock housing (1) has two push plates (16) arranged side by side. The two push plates (16) are movably arranged in the lock housing (1) along the Y-axis direction. Each of the two push plates (16) has an upper abutting surface (17) for cooperating with the upper drive column (13). The ends of the two push plates (16) away from the transmission assembly (5) have lower abutting surfaces (18). The lock housing (1) is rotatably provided with a lock cylinder dial (28), and the lock cylinder dial (28) has a dial that protrudes radially outward. When the lock cylinder dial (28) is rotated, the dial engages with the lower pushing surfaces (18) of the two push plates (16); The transmission assembly (5) is covered with a reset pressure plate (19), the reset pressure plate (19) is provided with an arc-shaped groove (20) for passing through the upper drive column (13), the reset pressure plate (19) is connected with a reset elastic element (21), the reset elastic element (21) is connected to the upper drive column (13), and the reset elastic element (21) has an elastic force that drives the upper drive column (13) to move toward both ends of the arc-shaped groove (20); The lock housing (1) is provided with a secondary latch (22) that moves along the X-axis. The lock housing (1) is also provided with a secondary transmission plate (23) that rotates inside. The secondary transmission plate (23) is rotatably connected to the upper connecting rod (3) or the lower connecting rod (4). The secondary transmission plate (23) rotates under the drive of the upper connecting rod (3) or the lower connecting rod (4). The secondary transmission plate (23) is slidably connected to the secondary latch (22). The secondary latch (22) moves back and forth under the drive of the secondary transmission plate (23).

2. The transmission component transmission link structure lock body according to claim 1, characterized in that, The transmission assembly (5) has two transmission plates arranged in parallel and spaced apart, and a toggle member (8) for driving the main locking tongue (2) is arranged between the two transmission plates.

3. The transmission component transmission link structure lock body according to claim 2, characterized in that, The main locking tongue (2) has a tail drive plate, which is inserted between the two transmission plates. The tail drive plate is provided with a first drive hole (9) that cooperates with the actuating member (8).

4. The transmission component transmission link structure lock body according to claim 3, characterized in that, The first drive hole (9) is a frame structure, and the first drive hole (9) has a middle positioning area (10) for accommodating the toggle member (8). The middle positioning area (10) is a rectangular frame structure that protrudes radially outward along the first drive hole (9).

5. The transmission component transmission link structure lock body according to claim 4, characterized in that, The middle positioning area (10) of the first driving hole (9) is provided with side positioning areas on both sides, and the combination of the two side positioning areas is a rhombus frame structure.

6. The transmission assembly transmission link structure lock body according to any one of claims 3-5, characterized in that, The tail drive plate of the main locking tongue (2) is provided with a first strip groove (11) extending along the X-axis direction, and the rotating shafts (12) of the two transmission plates pass through the first strip groove (11).

7. The transmission assembly transmission link structure lock body according to any one of claims 1-5, characterized in that, The transmission assembly (5) has two symmetrically arranged lower drive columns (14) on the side facing the upper connecting rod (3) and the lower connecting rod (4).

8. The transmission assembly transmission link structure lock body according to claim 7, characterized in that, The upper connecting rod (3) and the lower connecting rod (4) each have a second driving hole (15) that cooperates with the lower driving post (14).

9. The transmission assembly transmission link structure lock body according to claim 8, characterized in that, The second drive hole (15) has three positioning areas for accommodating the lower drive post (14), and the three positioning areas are semi-circular holes that protrude radially outward along the second drive hole (15).

10. The transmission assembly transmission link structure lock body according to any one of claims 1-5, characterized in that, The secondary locking tongue (22) has a groove (27), and the secondary transmission plate (23) has a sliding column inserted into the groove (27).

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