Energy storage tightening high-sealing door lock

Abstract

This invention relates to an energy-storing, high-sealing door lock, addressing the technical problems of existing similar products, such as large locking points, complex structures, poor linkage and stability, and a lack of overall continued locking and tightening after pre-locking. The key features are: the high-sealing door lock's top and bottom rods include a rack and pinion top and bottom rod and upper and lower top and bottom rods. One end of the rack and pinion top and bottom rod is connected to a connecting rod, and the other end is connected to one end of the upper and lower top and bottom rods of the pre-locking mechanism. The rack body of the point-locking mechanism has teeth on one side that mesh with a secondary gear on the bottom side of the point-locking base. The rack body is connected to the top rack and pinion top and bottom rods at one end by a rivet, and the other end passes through the point-locking base. The secondary gear is connected to a flexible steel bolt via a secondary drive shaft extending from the point-locking base. The other end of the upper and lower top and bottom rods passes through the rod guide of the pre-locking mechanism and is hinged to the top of the pre-pressing component. One end of the pre-pressing component is bent downwards and abuts against the door panel, while the other end is bent upwards.

Description

Technical Field

[0001] This invention relates to a high-sealing door lock, specifically an energy-storing, tightening high-sealing door lock. 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, significantly improving transportation conditions, hygiene, and the safety and integrity of goods. These high-sealing doors typically lock using a linkage mechanism. The linkage lock on the door panel requires the installation of guide components, positioning components, and other locking accessories, necessitating multiple assembly steps to achieve the locking action. Some similar products use a handle lock structure, such as Chinese patent application number 201710786638.6, published on December 22, 2017, entitled "Railway Mechanical Refrigerated Side Door Turn Handle Locking Mechanism"; others use a multi-point locking structure for the linkage lock's top and bottom rods to extend the locking stroke, such as Chinese patent application number 202221801859.9, authorized on December 9, 2022, entitled "Ultra-thin Compression Type Multi-point Locking Mechanism Module". However, the locking points of the above-mentioned products and similar products are relatively large and the structure is relatively complex. They mainly use a disc throttle to drive the transmission support rod and the displacement shaft to move, so as to lock and open the pressing block. They rarely use locks to achieve the linkage of the transmission mechanism to achieve locking and opening, as well as the continued locking and tightening of the whole after pre-locking. The linkage and stability are poor, and the production, assembly and installation are relatively inconvenient. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide an energy-storing, high-sealing door lock that addresses the technical problems of existing similar products, such as large locking points, complex structures, poor linkage and stability, inconvenient production, assembly, installation, and use, limited use of pre-locking followed by overall continued locking and tightening, and the reliance on flat locks with tightening handles. This objective is achieved through the following technical solution.

[0004] A high-sealing door lock with energy storage and tightening mechanism is provided. The base body has a base pressure plate on one side of its bottom and a driven gear connected to the handle shaft on the other side of its bottom. The driven gear meshes with a main gear on one side and simultaneously meshes with toothed holes on symmetrically arranged connecting rods on both sides. These toothed holes are equidistantly distributed at one end of the connecting rods, while the other ends of the connecting rods are connected to top and bottom rods on both sides. The top and bottom rods have a point-locking mechanism fixed to the door panel. This point-locking mechanism has a flexible steel bolt extending from the same side as the tightening bolt. The tightening bolt is located on the main drive shaft of the main gear. The handle shaft of the main gear is connected to one end of the door lock handle in the handle groove at the top of the base body. Connecting rods on both sides of the bottom of the base body are located in connecting rod holes on both sides of the bottom of the base body at the ends of the main gear and driven gear. The key structural design features include a rack and pinion top and bottom rods and upper and lower top and bottom rods. One end of the rack and pinion top and bottom rods is connected to a connecting rod, and the other end is connected to one end of the upper and lower top and bottom rods of the pre-locking mechanism. The toothed edge of one side of the rack body of the point-locking mechanism meshes with the auxiliary gear on one side of the bottom of the point-locking base. The rack body is connected to the top rack and pinion top and bottom rods by a rivet at one end. The other end of the rack body passes through the rack hole of the point-locking base. The auxiliary gear is connected to the flexible steel bolt by an auxiliary drive shaft extending out of the point-locking base. The other end of the upper and lower top and bottom rods passes through the rod guide of the pre-locking mechanism and is hinged to the top of the pre-pressing component. The rod guide is fixedly installed on the door panel. One end of the pre-pressing component is bent downwards and abuts against the door panel, while the other end of the pre-pressing component is bent upwards. The lock body adopts a tightening handle flat lock, the main lock bolt adopts a tightening bolt, and the locking point mechanism as a single locking point is optimized. When closing, the upper and lower rods are pre-locked in part, and then the remaining locking points continue to tighten. The above-mentioned point locking mechanism, combined with the rack and pinion body, can also be independently set in the connecting rod of similar products.

[0005] The rack body is integrally connected to the top rack and pinion rods via rivets at both ends, and the rack body is disposed within the rack groove at the bottom of the locking base. The above is another specific embodiment of the combination of the rack and pinion rods and the rack body.

[0006] The two ends of the rack body are respectively fixed to one end of the two rack top and bottom rods on both sides by rivets and connected as a whole; or the rack body and the rack top and bottom rods are integrally formed, and one side of the rack top and bottom rods is provided with teeth, which mesh with the auxiliary gear on one side of the bottom of the locking base. The above are other specific embodiments of the combination of rack top and bottom rods and rack body. At the same time, the specific structural design is limited to the above structural design, which can satisfy the requirement that the top and bottom rods are combined with the locking mechanism through the rack to further improve its stability.

[0007] In the said point lock mechanism, the auxiliary drive shaft is integrated with the auxiliary gear via an auxiliary gear shaft, the auxiliary drive shaft is sleeved into the shaft hole at the top of the auxiliary gear shaft, an auxiliary shaft sleeve is sleeved on the outer diameter of the auxiliary gear shaft, the auxiliary shaft sleeve and the auxiliary gear shaft are arranged in an auxiliary column sleeve protruding from one side of the point lock base, the auxiliary drive shaft extending out of the auxiliary column sleeve is connected with a flexible steel bolt, an auxiliary shaft pin at the position of the auxiliary drive shaft in the auxiliary gear shaft passes through auxiliary shaft spiral holes symmetrically arranged on both sides of the auxiliary gear shaft, and is inserted into L-shaped auxiliary shaft guide holes symmetrically arranged on both sides of the auxiliary shaft sleeve. A auxiliary sealing cover may also be arranged at the sleeve opening of the auxiliary shaft sleeve in the above-mentioned point lock base, an auxiliary sealing ring and a corresponding gasket are arranged on the outer diameter of the auxiliary gear shaft in the auxiliary shaft sleeve.

[0008] The auxiliary drive shaft extends out of the auxiliary column sleeve on one side of the point lock base, a rubber gasket is arranged on the outer diameter thereof, and a flat key hole of the flexible steel bolt is arranged in an interference fit in a flat key groove in the middle of the rubber gasket. Therefore, a flexible steel bolt is adopted in the middle of the top and bottom rods of the high-sealability door lock, and the flexible steel bolt on the auxiliary drive shaft is wrapped by rubber gaskets on both sides, which prevents the whole lock from failing due to the flexible steel bolt being unable to lock caused by door frame deformation.

[0009] An auxiliary pressure plate is arranged in the rod groove at the top of the symmetrical other side of the auxiliary column sleeve of the point lock base, and the rack top and bottom rod at the point lock base is fixed in the rod groove of the point lock base through the auxiliary pressure plate.

[0010] The main drive shaft is integrated with the main gear via a main gear shaft, the main drive shaft is sleeved into the shaft hole at the top of the main gear shaft and abuts against the spring in the shaft hole at the top of the main gear shaft, a main shaft sleeve is sleeved on the outer diameter of the main gear shaft, the main shaft sleeve and the main gear shaft are arranged in a main column sleeve protruding from the top of the tooth rod pressure plate, the main drive shaft extending out of the main column sleeve is connected with a tightening steel bolt, a main shaft pin at the position of the main drive shaft in the main gear shaft passes through main shaft spiral holes symmetrically arranged on both sides of the main gear shaft, and is inserted into L-shaped main shaft guide holes symmetrically arranged on both sides of the main shaft sleeve. A main sealing cover may also be arranged at the sleeve opening of the main shaft sleeve in the above-mentioned tooth rod pressure plate, a main sealing ring and a corresponding gasket are arranged on the outer diameter of the main gear shaft in the main shaft sleeve.

[0011] A connecting rod base is arranged at the bottom of the base body at one end of the main gear and the driven gear, the connecting rod base is integrated with the tooth rod pressure plate at the top, connecting rod grooves on both sides are communicated to form connecting rod holes, connecting rods on both sides are symmetrically clamped and arranged in the connecting rod holes on both sides of the connecting rod base and the tooth rod pressure plate, and the main gear and the driven gear are arranged in a gear cavity at the bottom of the tooth rod pressure plate.

[0012] The rod guide member is bent and arched in an I-shape, the upper and lower top and bottom rods are square rods, and the upper and lower top and bottom rods pass through square holes at the arched positions on both sides in the middle of the rod guide member.

[0013] The rack top and bottom rod is provided with a guide block, the guide block comprises an upper clamping block and a lower clamping block, and the guide block is fixedly arranged on the door panel.

[0014] The present invention has a reasonable structural design, is convenient to produce, 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 an energy storage tightening type high-sealing door lock, as well as for structural improvements of similar products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bottom three-dimensional structure of an embodiment of the present invention. The two framed parts in the figure have been enlarged.

[0016] Figure 2 yes Figure 1 Partial structural explosion diagram Figure 1 .

[0017] Figure 3 yes Figure 1 Partial structural explosion diagram Figure 2 .

[0018] Figure 4 yes Figure 1 A schematic diagram of the front three-dimensional structure.

[0019] Figure 5 yes Figure 1 A cross-sectional structural diagram of the main body of the base.

[0020] Attached Figures and Their Names: 1. Base Plate, 2. Base Body, 3. Tightening Bolt, 4. Gear Plate, 401 Main Column Sleeve, 5. Connecting Rod, 6. Rack and Pinion Rods, 7. Flexible Bolt, 8. Point Lock Base, 9. Rack Body, 10. Guide Block, 1001. Upper Clamping Block, 1002. Lower Clamping Block, 11. Rod Guide, 12. Upper and Lower Racks, 13. Pre-compression Component, 14. Connecting Rod Base, 15. Main Gear, 16. Driven Gear, 17. Main Gear Shaft, 18. Spring, 19. Main Shaft Sleeve, 20. Main Drive Shaft, 21. Secondary Gear, 22. Secondary Gear Shaft, 23. Secondary Shaft Sleeve, 24. Secondary Drive Shaft, 25. Rubber Pad, 26. Secondary Plate, 27. Door Lock Handle. Implementation

[0021] The structure and use of the present invention will now be further described with reference to the accompanying drawings. Figures 1-5As shown, a base pressure plate 1 is provided on one side of the bottom of the base body 2 of the highly sealed door lock, and a driven gear 16 connected to a handle rotating shaft is provided on the other side of the bottom of the base body. While the driven gear is meshed with a main gear 15 on one side, the driven gear is meshed with tooth holes on symmetrically arranged connecting rods 5 on both sides. The tooth holes are equally distributed on one end of the connecting rods respectively, and the other end of the connecting rods is distributed and connected to top and bottom dead bolts on both sides. The top and bottom dead bolts are provided with point locking mechanisms fixed on a door panel, and the point locking mechanism is provided with a flexible steel bolt 7 extending out on the same side as a tightening steel bolt 3. The tightening steel bolt is provided on a main transmission shaft 20 of the main gear, a handle rotating shaft of the main gear is connected to one end of a door lock handle 27 in a handle groove on the top of the base body, and the connecting rods on both sides of the bottom of the base body are arranged in connecting rod holes on both sides of the bottom of the base body at one end of the main gear and the driven gear. The specific structure is as follows: the above-mentioned top and bottom dead bolts comprise a rack-type top-bottom dead bolt 6 and upper and lower top-bottom dead bolts 12, one end of the rack-type top-bottom dead bolt is connected with the connecting rod, and the other end of the rack-type top-bottom dead bolt is tilted upward and connected with one end of the upper and lower top-bottom dead bolts of the pre-locking mechanism; a tooth opening on one side of a rack body 9 of the point locking mechanism is meshed with an auxiliary gear 21 on one side of the inner bottom of a point lock base 8, the rack body is integrated with the rack-type top-bottom dead bolt on the top through a rivet at one end, the other end of the rack body passes through a rack hole of the point lock base, and the auxiliary gear is integrated with the flexible steel bolt 7 through an auxiliary transmission shaft 24 extending out of the point lock base; the other end of the upper and lower top-bottom dead bolts passes through a rod guide 11 of the pre-locking mechanism and is hinged to the top of a pre-pressing member 13, the rod guide is fixedly arranged on the door panel, the rod guide is curved and arched in a shape of "ji", the upper and lower top-bottom dead bolts are square rods, the upper and lower top-bottom dead bolts pass through square holes at the arched positions on both sides in the middle of the rod guide, one end bottom of the pre-pressing member is bent and tilted downward and abuts against the door panel, and the other end top of the pre-pressing member is bent and tilted upward.

[0022] The auxiliary transmission shaft of the above-mentioned point locking mechanism is integrated with the auxiliary gear through an auxiliary gear shaft 22, the auxiliary transmission shaft is sleeved into a shaft hole at the top of the auxiliary gear shaft, an auxiliary shaft sleeve 23 is sleeved on the outer diameter of the auxiliary gear shaft, the auxiliary shaft sleeve and the auxiliary gear shaft are arranged in an auxiliary column sleeve protruding on one side of the point lock base, the auxiliary transmission shaft extending out of the auxiliary column sleeve is connected with the flexible steel bolt, an auxiliary shaft pin at the auxiliary transmission shaft in the auxiliary gear shaft passes through auxiliary shaft spiral holes symmetrically arranged on both sides of the auxiliary gear shaft, and is inserted into auxiliary shaft L-shaped guide holes symmetrically arranged on both sides of the auxiliary shaft sleeve. The auxiliary transmission shaft extends out of the auxiliary column sleeve on one side of the point lock base, a rubber gasket 25 is arranged on the outer diameter of the auxiliary transmission shaft, and a flat key hole of the flexible steel bolt is arranged in a flat key groove in the middle of the rubber gasket in an interference manner. An auxiliary pressure plate 26 is arranged in a rod groove at the top of the symmetrical other side of the auxiliary column sleeve of the point lock base, and the rack-type top-bottom dead bolt at the point lock base is fixed to the rod groove of the point lock base through the auxiliary pressure plate.

[0023] The aforementioned main drive shaft is integrated with the main gear via the main gear shaft 17. The main drive shaft is fitted into the shaft hole at the top of the main gear shaft and abuts against the spring 18 inside the shaft hole at the top of the main gear shaft. The outer diameter of the main gear shaft is fitted with a main shaft sleeve 19. The main shaft sleeve and the main gear shaft are located within the main column sleeve 401 protruding from the top of the rack pressure plate. The main drive shaft extending out of the main column sleeve is connected to a tightening bolt. The main shaft pin at the main drive shaft location inside the main gear shaft passes through the main shaft helical holes symmetrically arranged on both sides of the main gear shaft and is inserted into the main shaft L-shaped guide holes symmetrically arranged on both sides of the main shaft sleeve. A connecting rod base 14 is provided at the bottom of the base body at one end of the main gear and the driven gear. The connecting rod base is integrated with the rack pressure plate at the top, and the connecting rod slots on both sides communicate to form a connecting rod hole. The connecting rods on both sides are symmetrically clamped and arranged in the connecting rod holes on both sides of the connecting rod base and the rack pressure plate. The main gear and the driven gear are located in the gear cavity at the bottom of the rack pressure plate. The rack and pinion is equipped with a guide block 10, which includes an upper clamping block 1001 and a lower clamping block 1002. The guide block is fixedly installed on the door panel.

[0024] When in use, the key is inserted into the lock cylinder of the door lock handle. After unlocking, the door lock handle pops out. When the door lock handle is turned, the driven gear rotates. The driven gear drives the connecting rods on both sides, the rack and pinion rods, and the upper and lower rods to move up and down together. At the same time, the upper and lower rods drive the pre-pressing parts to press the door panel, while the rack and pinion rods drive the flexible steel bolt to rotate through the rack body. The main gear rotates through the driven gear and drives the tightening steel bolt to rotate, thereby achieving simultaneous locking of the tightening steel bolt and the flexible steel bolt of the door panel.

Claims

1. A high-sealing door lock with energy storage and tightening, wherein the base body (2) of the high-sealing door lock has a base pressure plate (1) on one side of its bottom, and a driven gear (16) connected to the handle shaft on the other side of the bottom of the base body. The driven gear meshes with the main gear (15) on one side, and meshes with the tooth holes at the connecting rods (5) symmetrically arranged on both sides. The tooth holes are equidistantly distributed at one end of the connecting rod, and the other end of the connecting rod is connected to the top and bottom rods on both sides. The top and bottom rods are provided with a point locking mechanism fixed to the door panel. The point locking mechanism is provided with a flexible steel bolt (7) extending from the same side as the tightening steel bolt (3). The tightening steel bolt is provided on the main drive shaft (20) of the main gear. The handle shaft of the main gear is connected to one end of the door lock handle (27) in the handle groove at the top of the base body. The connecting rods on both sides of the bottom of the base body are provided in the connecting rod holes on both sides of the bottom of the base body at one end of the main gear and the driven gear; characterized in that The top and bottom rods include a rack and pinion rod (6) and upper and lower top and bottom rods (12). One end of the rack and pinion rod is connected to the connecting rod (5), and the other end of the rack and pinion rod is connected to one end of the upper and lower top and bottom rods of the pre-locking mechanism. The toothed edge of one side of the rack body (9) of the point locking mechanism meshes with the auxiliary gear (21) on the bottom side of the point locking base (8). The rack body is connected to the top rack and pinion rod at the top by a rivet at one end. The other end of the rack body passes through the rack hole of the point locking base. The auxiliary gear is connected to the flexible steel bolt (7) by an auxiliary transmission shaft (24) extending out of the point locking base. The other end of the upper and lower top and bottom rods passes through the rod guide (11) of the pre-locking mechanism and is hinged to the top of the pre-pressing member (13). The rod guide is fixedly set on the door panel. The bottom of one end of the pre-pressing member is bent downward and raised and abuts against the door panel. The top of the other end of the pre-pressing member is bent upward.

2. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The rack body (9) is connected to the rack top and bottom rods (6) at the top by rivets at both ends, and the rack body is set in the rack groove at the bottom of the point lock base (8).

3. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The two ends of the rack body (9) are respectively fixed to one end of the two rack top and bottom rods (6) on both sides by rivets and connected as one piece; or the rack body and the rack top and bottom rods are integrally formed, and one side of the rack top and bottom rods is provided with teeth, and the teeth of the rack top and bottom rods mesh with the auxiliary gear (21) on one side of the bottom of the lock base (8).

4. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The secondary drive shaft (24) of the point locking mechanism is connected to the secondary gear (21) through the secondary gear shaft (22). The secondary drive shaft is fitted into the shaft hole at the top of the secondary gear shaft. The outer diameter of the secondary gear shaft is fitted with a secondary shaft sleeve (23). The secondary shaft sleeve and the secondary gear shaft are set in the secondary column sleeve protruding on one side of the point locking base (8). The secondary drive shaft extending out of the secondary column sleeve is connected to the flexible steel bolt (7). The secondary shaft pin at the secondary drive shaft inside the secondary gear shaft passes through the secondary shaft spiral holes symmetrically arranged on both sides of the secondary gear shaft and is inserted into the secondary shaft L-shaped guide holes symmetrically arranged on both sides of the secondary shaft sleeve.

5. The energy-storage tightening high-sealing door lock according to claim 4, characterized in that... The auxiliary drive shaft (24) extends out of the auxiliary column sleeve on one side of the locking base (8) and is provided with a rubber pad (25) on its outer diameter. The flat key hole of the flexible steel bolt (7) is interference-fitted into the flat key groove in the middle of the rubber pad.

6. The energy-storage tightening high-sealing door lock according to claim 4, characterized in that... The secondary column sleeve of the point lock base (8) is symmetrically provided with a secondary pressure plate (26) on the top rod groove on the other side. The rack and pinion rod (6) at the point lock base is fixed to the rod groove of the point lock base through the secondary pressure plate.

7. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The main drive shaft (20) is connected to the main gear (15) through the main gear shaft (17). The main drive shaft is fitted into the shaft hole at the top of the main gear shaft and abuts against the spring (18) in the shaft hole at the top of the main gear shaft. The outer diameter of the main gear shaft is fitted with a main shaft sleeve (19). The main shaft sleeve and the main gear shaft are set in the main column sleeve (401) protruding at the top of the gear rack pressure plate (4). The main drive shaft extending out of the main column sleeve is connected to the tightening bolt (3). The main shaft pin at the main drive shaft inside the main gear shaft passes through the main shaft spiral holes symmetrically arranged on both sides of the main gear shaft and is inserted into the main shaft L-shaped guide holes symmetrically arranged on both sides of the main shaft sleeve.

8. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... A connecting rod base (14) is arranged at the bottom of the base main body (2) at one end of the main gear (15) and the driven gear (16), the connecting rod base is integrated with the rack pressing plate (4) at the top, and connecting rod grooves on both sides communicate to form connecting rod holes, two side connecting rods (5) are symmetrically clamped and arranged in the connecting rod holes on both sides of the connecting rod base and the rack pressing plate, and the main gear and the driven gear are arranged in a gear cavity at the bottom of the rack pressing plate.

9. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The rod guide member (11) is bent and arched in an Ω shape, the upper and lower天地 rods (12) are square rods, and the upper and lower天地 rods pass through square holes at the arched positions on both sides in the middle of the rod guide member.

10. The energy-storage tightening high-sealing door lock according to claim 1, characterized in that... The rack天地 rod (6) is provided with a guide block (10), the guide block comprises an upper clamping block (1001) and a lower clamping block (1002), and the guide block is fixedly arranged on the door panel.

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