High seal door lock linkage mechanism

Abstract

The application relates to a high-sealing door lock linkage mechanism, which is designed in view of the technical problem that the existing similar products are less likely to adopt a lock to realize linkage of a transmission mechanism to achieve locking and opening, and lack of a linkage module to realize further locking and extension. The mechanism comprises a locking transmission assembly, a main connecting rod steel bolt assembly and a secondary connecting rod lock bolt assembly, and the main point is that one end of a first umbrella-shaped gear of the locking transmission assembly is provided with an umbrella-shaped head, and the outer diameter of the umbrella-shaped head is provided with a gear ring below; the umbrella-shaped tooth surface of one end of a second umbrella-shaped gear in the transmission shell is engaged with the umbrella-shaped tooth surface at the umbrella-shaped head of the first umbrella-shaped gear, and the first umbrella-shaped gear in the shell is engaged with the tooth hole of the transmission rack rod through the gear ring; the tightening steel bolt of the main connecting rod steel bolt assembly is integrated with the transmission gear in the shell, the gear ring on one side of the transmission gear is engaged with the tooth opening on one side of the transmission rack piece in the shell, and the transmission rack pieces of the main connecting rod steel bolt assemblies on the two sides of the locking transmission assembly drive the transmission gear and the tightening steel bolt to rotate at the same time.

Description

High-sealing door lock linkage mechanism Technical Field

[0001] This invention relates to a high-sealing door lock linkage mechanism, which is a high-sealing door lock linkage mechanism. Background Technology

[0002] High-sealing doors are mainly used in vans, containers, and freight railways. They are transported via attached or integrated, fully enclosed, independent carriages, thus significantly improving transportation conditions, hygiene, and the safety and integrity of goods. These high-sealing doors typically lock themselves using linkages. The linkages, when locked to the door panel, require the installation of guide components, positioning components, and other locking accessories, necessitating multiple assembly steps to achieve the locking action of the cabinet lock body. Some similar products use a handle lock structure for connection and use, such as application number 201710786638.6 disclosed in Chinese patent literature, application publication date 2017.12.22, invention title "Railway Mechanical Refrigerated Side Door Turn Handle Locking Mechanism"; however, the above products and similar products mainly use a disc turn handle to drive the transmission support rod and displacement shaft to move, so as to lock and open the pressing block; they rarely use locks to realize the linkage of the transmission mechanism to achieve locking and opening, which is difficult to combine with other transmission mechanisms, has poor linkage and stability, is inconvenient for production, assembly and installation, and the length adjustment of the connecting rod and pull rod is inconvenient, and there is a lack of linkage modules to achieve further locking and extension. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a high-sealing door lock linkage mechanism, which solves the technical problems of existing similar products rarely using locks to achieve linkage of transmission mechanisms to lock and unlock, being difficult to combine with other transmission mechanisms, having poor linkage and stability, being inconvenient in production, assembly, installation and use, being inconvenient in adjusting the length of connecting rods and pull rods, and lacking a linkage module to achieve further locking and extension. This objective is achieved through the following technical solution.

[0004] A high-sealing door lock linkage mechanism includes a locking transmission assembly and a main connecting rod bolt assembly. The base of the locking transmission assembly is fastened and fixed to the transmission housing. At least one side of the fastened and fixed housing is provided with a rack groove. One end of the transmission rack rod in the rack groove is provided with equally spaced tooth holes. The tooth holes of the transmission rack rod mesh with the teeth of a gear extending from one side of the housing. The lock's rotating shaft extends into the base through the door panel and is connected to the gear. The two sides of the transmission rack rod extending out of the base and the transmission housing are respectively connected to the first pull rods of the main connecting rod bolt assemblies on both sides. The main connecting rod bolt assemblies on both sides simultaneously drive the tightening bolts to rotate, thereby unlocking and locking. The key structural design features a first bevel gear in the locking transmission assembly. One end of the first bevel gear has a bevel head, and a gear ring is located on the lower outer diameter of the bevel head. A second bevel gear is housed within the transmission housing. The bevel tooth surface at one end of the second bevel gear meshes with the bevel tooth surface at the bevel head of the first bevel gear. The first bevel gear within the housing meshes with the toothed hole of the transmission rack rod via the gear ring. The other end of the second bevel gear extends out of the housing and is fixedly connected to one end of a wrench lock button. When the other end of the wrench lock button is turned, the second bevel gear within the housing rotates, causing the first bevel gear to rotate. The first bevel gear then causes the transmission rack rods on both sides to move up and down. This allows for unlocking or locking by inserting a wrench lock button or key into the keyhole of the first bevel gear; alternatively, a keyhole may be located on one end of the shaft of the first bevel gear, extending out of or aligned with the unlocking hole of the lock; or, omitting the lock altogether, the keyhole of the first bevel gear extends out of or aligns with the unlocking hole of the door panel.

[0005] The other end of the transmission rack is provided with a waist-shaped sliding hole. Below the waist-shaped sliding hole of the transmission rack, a first guide member is provided on the door panel. One end of the first pull rod of the main connecting rod bolt assembly moves within the waist-shaped sliding hole of the transmission rack via a positioning pin, and the other end of the first pull rod is inserted into the through hole of the first guide member. The transmission rack is connected to the main connecting rod bolt assembly via the first pull rod. The transmission rack drives the positioning pin of the first pull rod to move to one end of the waist-shaped sliding hole before continuing to move, thus unlocking or locking.

[0006] The base has a protruding fixing post at one middle end, which is inserted into the post hole of the transmission housing. The other end of the second bevel gear extends out of the fixing post and is fixedly connected to one end of the wrench locking button. A protruding bevel-shaped tooth groove is located in the middle of the transmission housing above the fixing post, and the bevel-shaped tooth surface of the second bevel gear is located within the bevel-shaped tooth groove of the transmission housing. A bearing is provided between the second bevel gear and the fixing post of the base, and the second bevel gear is fixedly connected to one end of the wrench locking button via a square head and screws.

[0007] The base has symmetrical lower rack grooves on both sides, and the transmission housing has symmetrical upper rack grooves on both sides. The transmission rack rod is respectively disposed in the rack groove formed by the lower rack groove on one side of the base and the upper rack groove on one side of the transmission housing. The above is a specific embodiment of the rack groove structure of the housing.

[0008] The tightening bolt of the main connecting rod bolt assembly is fixedly connected to the central shaft of the transmission gear inside the housing by screws. The gear ring on one side of the transmission gear meshes with the toothed edge on one side of the transmission rack inside the housing. The two ends of the transmission rack extend out of the housing and are connected to the first and second pull rods on both sides. The first and second pull rods at the door panel are respectively provided with first and second guides. When the locking transmission assembly drives the first and second pull rods of the main connecting rod bolt assembly on both sides to move together through the transmission rack rods on both sides, the transmission racks of the main connecting rod bolt assembly on both sides simultaneously drive the transmission gear and the tightening bolt to rotate. The door panel is pressed against the door frame by the tightening bolt. The second and first pull rods at the other end of the transmission racks of the main connecting rod bolt assembly on both sides are inserted into the door frame, or the second and first pull rods at the other end of the transmission racks of the main connecting rod bolt assembly on both sides are connected to another set of connecting rod bolt assemblies through right-angle guide assemblies. The tightening bolt of the other set of connecting rod bolt assemblies is pressed against the door frame at the same time. The right-angle guide is provided on the door panel. This further locks the door panel by interlocking the two main connecting rod bolt assemblies on both sides of the transmission assembly, or by combining the two main connecting rod bolt assemblies and the two auxiliary connecting rod bolt assemblies.

[0009] The end of the tightening bolt is bent towards one side of the door panel. This structure facilitates an increase in the load-bearing capacity during locking.

[0010] The housing includes a first rotating bushing and a second rotating bushing. One end of the first rotating bushing and one end of the second rotating bushing are fastened and fixedly connected to form the housing. A rack groove is provided on one side of the housing, and a gear groove is provided on the other symmetrical side of the housing. A transmission gear is disposed in the gear groove, and a transmission rack is disposed in the rack groove. A first pressure plate and a second pressure plate are respectively provided at the other ends of the first and second rotating bushings. The connecting rod and the transmission rack are respectively confined to the grooves at the bottom of the first and second pressure plates and move within them. The above is the specific assembly structure of the housing. It can also adopt an integral structure, as long as it has a rack groove for placing the transmission rack and a gear groove for placing the transmission gear.

[0011] The outer diameter of the gear groove above the rack groove has a raised limiting edge, and the transmission rack piece is located in the rack groove below the limiting edge. This structure facilitates further limiting of the transmission rack piece by the limiting edge.

[0012] The right-angle guide assembly has a guide housing containing a first pull rod rack and a second pull rod rack stacked vertically at right angles. One end of each pull rod rack meshes with a guide gear within the guide housing. The other ends of each rack extend out of the guide housing and connect to a first pull rod on one side of the secondary connecting rod bolt assembly. A second pull rod is omitted on the other side of the secondary connecting rod bolt assembly. A guide cover is provided at the bottom opening of the guide housing. This describes the specific structural implementation where the main connecting rod bolt assembly further locks the upper and lower edges of the door panel via another secondary connecting rod bolt assembly distributed at right angles.

[0013] The pull rods of the transmission rack are inserted into the door frame via the first pull rod rack of the right-angle guide assembly. The transmission rack serves the same function as the guide, and the first pull rod rack is used as the pull rod inserted into the door frame.

[0014] The lock has a latch on one side of its bottom. When the main connecting rod bolt assembly tightens the bolt against the door frame, the latch of the lock locks the door frame or the door panel on the other side.

[0015] The present invention has a reasonable structural design, is convenient to manufacture, assemble, install and use, has good stability, multiple locking points, good linkage effect, strong versatility and wide range of applications; it is suitable for use as a high-sealing door lock linkage mechanism, as well as for structural improvements of similar products. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the exploded structure of one side of an embodiment of the present invention, in which the extended part is the first bevel gear.

[0017] Figure 2 is a schematic diagram of the assembled three-dimensional structure of Figure 1.

[0018] Figure 3 is a schematic diagram of the usage state structure of Figure 2, with part A in the figure defined.

[0019] Figure 4 is an enlarged view of part A in Figure 3.

[0020] Figure 5 is a schematic diagram of the improved exploded structure of the main connecting rod bolt assembly in Figure 1.

[0021] Attached figures and their names: 1. Lock, 2. Base, 201. Fixing post, 202. Lower rack groove, 3. First bevel gear, 4. Transmission housing, 401. Post hole, 402. Upper rack groove, 5. Second bevel gear, 6. Wrench lock button, 7. First pull rod, 8. First guide member, 9. Positioning pin, 10. Transmission rack rod, 11. First rotating bushing, 12. First pressure plate, 13. Tightening bolt, 14. Transmission gear, 15. Second pressure plate, 16. Second guide member, 17. Second pull rod, 18. Transmission rack piece, 19. Second rotating bushing, 20. First pull rod rack, 21. Guide housing, 22. Second pull rod rack, 23. Guide cover, 24. Guide gear, 25. Secondary connecting rod bolt assembly, 26. Door panel, 27. Door frame. Detailed Implementation Methods

[0022] The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in Figures 1-5, the mechanism includes a locking transmission assembly, a main connecting rod bolt assembly, and a secondary connecting rod bolt assembly 25. The base 2 of the locking transmission assembly is fastened and fixed to the transmission housing 4. At least one side of the fastened and fixed housing is provided with a rack groove. One end of the transmission rack rod 10 in the rack groove is provided with equally spaced tooth holes. The tooth holes of the transmission rack rod mesh with the teeth of the first bevel gear 13 extending from one side of the housing. The rotating shaft of the lock 1 extends into the base through the door plate 26 and is connected to the first bevel gear. The two transmission rack rods extending out of the base and the transmission housing are respectively connected to the first pull rods 7 of the main connecting rod bolt assemblies on both sides. The main connecting rod bolt assemblies on both sides simultaneously drive the tightening bolts to rotate, thereby realizing the locking and unlocking. The locking transmission assembly has a bevel gear with a bevel head at one end and a gear ring on the lower outer diameter of the bevel head. A second bevel gear 5 is provided inside the transmission housing. The bevel tooth surface at one end of the second bevel gear meshes with the bevel tooth surface at the bevel head of the first bevel gear. The first bevel gear inside the housing meshes with the tooth hole of the transmission rack 10 through the gear ring. The other end of the second bevel gear extends out of the housing and is fixedly connected to one end of the wrench lock button 6. When the other end of the wrench lock button is turned, the second bevel gear inside the housing rotates. The second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the transmission racks on both sides to move up and down.

[0023] The other end of the aforementioned transmission rack is provided with a waist-shaped sliding hole. A first guide member 8 is provided on the door panel below the waist-shaped sliding hole of the transmission rack. One end of the first pull rod 7 of the main connecting rod bolt assembly moves within the waist-shaped sliding hole of the transmission rack via a positioning pin 9, and the other end of the first pull rod is inserted into the through hole of the first guide member. A protruding fixing post 201 is provided at one middle end of the base. The fixing post of the base is inserted into the post hole 401 of the transmission housing. The other end of the second bevel gear extends out of the fixing post of the base and is fixedly connected to one end of the wrench locking button. A protruding bevel-shaped tooth groove is provided in the middle of the transmission housing above the fixing post of the base, and the bevel-shaped tooth surface of the second bevel gear is located within the bevel-shaped tooth groove of the transmission housing. Lower rack grooves 202 are symmetrically provided on both sides of the base, and corresponding upper rack grooves 402 are symmetrically provided on both sides of the transmission housing. The transmission rack is respectively set within the rack groove formed by the lower rack groove on one side of the base and the upper rack groove on one side of the transmission housing.

[0024] The tightening bolt of the aforementioned main connecting rod bolt assembly is fixedly connected to the central shaft of the transmission gear 14 inside the housing by screws. The gear ring on one side of the transmission gear meshes with the toothed edge on one side of the transmission rack 18 inside the housing. The two ends of the transmission rack extend out of the housing and are connected to the first pull rod and the second pull rod 17 on both sides. The first pull rod and the second pull rod at the door panel are respectively provided with a first guide and a second guide 16. The locking transmission assembly drives the first pull rod and the second pull rod of the main connecting rod bolt assembly on both sides through the transmission rack rods on both sides. When in motion, the transmission rack plates of the main connecting rod bolt assemblies on both sides simultaneously drive the transmission gear and the tightening bolt to rotate. The door panel is pressed against the door frame 27 by the tightening bolt. The second pull rod and the first pull rod at the other end of the transmission rack plates of the main connecting rod bolt assemblies on both sides are inserted into the door frame, or the second pull rod and the first pull rod at the other end of the transmission rack plates of the main connecting rod bolt assemblies on both sides are connected to another set of connecting rod bolt assemblies through right-angle guide assemblies. The tightening bolt of the other set of connecting rod bolt assemblies is pressed against the door frame at the same time. The right-angle guide is set on the door panel.

[0025] The end of the aforementioned tightening bolt is bent towards one side of the door panel. The housing includes a first rotating bushing 11 and a second rotating bushing 19. One end of the first rotating bushing and one end of the second rotating bushing are fastened and fixedly connected to form the housing. A rack groove is provided on one side of the housing, and a gear groove is provided on the other symmetrical side of the housing. A transmission gear 14 is disposed in the gear groove, and a transmission rack is disposed in the rack groove. A first pressure plate 12 and a second pressure plate 15 are respectively provided at the other end of the first rotating bushing and the other end of the second rotating bushing. The connecting rod and the transmission rack are respectively limited to moving within the grooves at the bottom of the first pressure plate and the second pressure plate. A protruding limiting edge is provided on the outer diameter of the gear groove above the rack groove, and the transmission rack is located in the rack groove below the limiting edge. The guide housing 21 of the right-angle guide assembly is provided with a first tie rod rack 20 and a second tie rod rack 22 stacked at right angles. The teeth at one end of the first tie rod rack and the second tie rod rack in the guide housing respectively mesh with the guide gear 24 in the guide housing. The other ends of the first tie rod rack and the second tie rod rack extend out of the guide housing and are connected to the first tie rod on one side of the secondary connecting rod bolt assembly 25. The second tie rod is omitted on the other side of the secondary connecting rod bolt assembly. The bottom opening of the guide housing is provided with a guide cover 23.

[0026] When in use, the key is inserted into the lock, which drives the first bevel gear to rotate. The first bevel gear drives the transmission racks on both sides to move up and down. When the racks reach one end of their grooves, they continue to move, allowing the first and second links of the two main connecting rod bolt assemblies on both sides of the racks to move up and down. This causes the tightening bolts of the main connecting rod bolt assembly and the auxiliary connecting rod bolt assembly to rotate counterclockwise or clockwise, thus unlocking and unlocking.

Claims

1. A high-sealing door lock linkage mechanism, comprising a locking transmission assembly and a main connecting rod bolt assembly, wherein the base (2) of the locking transmission assembly is fastened and fixed to the transmission housing (4), and at least one side of the fastened and fixed housing is provided with a rack groove, and one end of the transmission rack rod (10) in the rack groove is provided with equidistantly arranged tooth holes, and the tooth holes of the transmission rack rod mesh with the tooth head of the gear extending from one side of the housing; the rotating shaft of the lock (1) extends into the base through the door plate (26), the rotating shaft is connected to the gear, and the two sides of the transmission rack rod extending out of the base and the transmission housing are respectively connected to the first pull rod (7) of the main connecting rod bolt assembly on both sides, and the two sides of the main connecting rod bolt assembly simultaneously drive the tightening bolt (13) to rotate to realize unlocking and locking; characterized in that The gear of the locking transmission assembly is a first bevel gear (3). One end of the first bevel gear is provided with a bevel head, and a gear ring is provided on the lower outer diameter of one end of the bevel head. A second bevel gear (5) is provided in the transmission housing. The bevel tooth surface at one end of the second bevel gear meshes with the bevel tooth surface at the bevel head of the first bevel gear. The first bevel gear in the housing meshes with the tooth hole of the transmission rack (10) through the gear ring. The other end of the second bevel gear extends out of the housing and is fixedly connected to one end of the wrench lock button (6). When the other end of the wrench lock button is turned, the second bevel gear in the housing rotates. The second bevel gear drives the first bevel gear to rotate. The first bevel gear drives the transmission rack on both sides to move up and down.

2. The high-sealing door lock linkage mechanism according to claim 1, characterized in that... The other end of the transmission rack (10) is provided with a waist-shaped sliding hole. The door panel (26) below the waist-shaped sliding hole of the transmission rack is provided with a first guide (8). One end of the first pull rod (7) of the main connecting rod bolt assembly moves in the waist-shaped sliding hole of the transmission rack through the positioning pin (9). The other end of the first pull rod is inserted into the through hole of the first guide.

3. The high-sealing door lock linkage mechanism according to claim 1, characterized in that... The base (2) has a protruding fixed post (201) at one middle end. The fixed post of the base is inserted into the post hole (401) of the transmission housing (4). The other end of the second bevel gear (5) extends out of the fixed post of the base and is fixedly connected to one end of the wrench lock button (6). The transmission housing above the fixed post of the base has a protruding bevel tooth groove in the middle. The bevel tooth surface of the second bevel gear is located in the bevel tooth groove of the transmission housing.

4. The high-sealing door lock linkage mechanism according to claim 1, characterized in that... The base (2) has symmetrical lower rack grooves (202) on both sides, and the transmission housing (4) has symmetrical upper rack grooves (402) on both sides. The transmission rack rod (10) is respectively set in the rack groove formed by the lower rack groove on one side of the base and the upper rack groove on one side of the transmission housing.

5. The high-sealing door lock linkage mechanism according to claim 1, characterized in that... The tightening bolt (13) of the main connecting rod bolt assembly is fixedly connected to the central shaft of the transmission gear (14) inside the housing by screws. The gear ring on one side of the transmission gear meshes with the toothed edge on one side of the transmission rack (18) inside the housing. The two ends of the transmission rack extend out of the housing and are connected to the first pull rod (7) and the second pull rod (17) on both sides. The first pull rod and the second pull rod at the door panel (26) are respectively provided with the first guide (8) and the second guide (16). The locking transmission assembly drives the main connecting rod bolt assemblies on both sides through the transmission rack rods (10) on both sides respectively. When the first and second pull rods are linked, the transmission rack plates of the main connecting rod bolt assemblies on both sides drive the transmission gear and the tightening bolt to rotate simultaneously. The door panel is pressed against the door frame (27) by the tightening bolt. The second pull rod and the first pull rod at the other end of the transmission rack plates of the main connecting rod bolt assemblies on both sides are inserted into the door frame, or the second pull rod and the first pull rod at the other end of the transmission rack plates of the main connecting rod bolt assemblies on both sides are connected to another connecting rod bolt assembly (25) through the right-angle guide assembly. The tightening bolt of the other connecting rod bolt assembly is pressed against the door frame at the same time. The right-angle guide is set on the door panel.

6. The high-sealing door lock linkage mechanism according to claim 5, characterized in that... The end of the tightening bolt (13) is bent toward one side of the door panel (26).

7. The high-sealing door lock linkage mechanism according to claim 5, characterized in that... The housing includes a first rotating bushing (11) and a second rotating bushing (19). One end of the first rotating bushing and one end of the second rotating bushing are fastened and fixedly connected to form the housing. A rack groove is provided on one side of the housing, and a gear groove is provided on the other side of the housing. A transmission gear (14) is provided in the gear groove, and a transmission rack piece (18) is provided in the rack groove. A first pressure plate (12) and a second pressure plate (15) are respectively provided at the other end of the first rotating bushing and the other end of the second rotating bushing. The connecting rod and the transmission rack piece are respectively limited to moving within the grooves at the bottom of the first pressure plate and the second pressure plate.

8. The high-sealing door lock linkage mechanism according to claim 7, characterized in that... The outer diameter of the gear groove above the rack groove is provided with a protruding limiting edge, and the transmission rack piece (18) is located in the rack groove below the limiting edge.

9. The high-sealing door lock linkage mechanism according to claim 5, characterized in that... The guide housing (21) of the right-angle guide assembly is provided with a first tie rod rack (20) and a second tie rod rack (22) stacked at right angles. The teeth at one end of the first tie rod rack and the second tie rod rack in the guide housing respectively mesh with the guide gear (24) in the guide housing. The other ends of the first tie rod rack and the second tie rod rack extend out of the guide housing and are connected to the first tie rod (7) on one side of the secondary connecting rod bolt assembly (25). The second tie rod (17) is omitted on the other side of the secondary connecting rod bolt assembly. The bottom opening of the guide housing is provided with a guide cover (23).

10. The high-sealing door lock linkage mechanism according to claim 5, characterized in that... The pull rods of the transmission rack (18) are inserted into the door frame (27) through the first pull rod rack (20) of the right-angle guide assembly.

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