Double-connecting-rod lock mechanism of high-sealing door

Abstract

The utility model relates to a double-connecting-rod lock mechanism of a high-sealing door, and aims to solve the technical problems of unbalanced transmission force, insufficient locking force and poor locking hand feeling caused by a single-connecting-rod structure and a long locking stroke of the conventional similar products. The key point is that a heaven and earth rod of the mechanism comprises a first main connecting rod and a first auxiliary connecting rod, the first main connecting rod and the first auxiliary connecting rod are symmetrically arranged on two sides of a main lock in pairs, one end of the first main connecting rod and one end of the first auxiliary connecting rod are respectively connected with an extending transmission strip into a whole, and the other end of the first main connecting rod and the other end of the first auxiliary connecting rod are respectively connected with one end of a rack in an auxiliary lock into a whole; tooth openings in one side of the rack are symmetrically arranged and meshed with an auxiliary gear at one end of an auxiliary transmission shaft in the auxiliary lock. An auxiliary tightening steel bolt is arranged at the other end of the auxiliary transmission shaft. A swing rod is arranged between each rack and the joint of the first main connecting rod and the first auxiliary connecting rod, an auxiliary transmission shaft arranged at the auxiliary tightening steel bolt and the auxiliary gear in the middle of the swing rod swings, and the two ends of the swing rod are hinged and linked with the corresponding racks, the first main connecting rod and the first auxiliary connecting rod at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the high sealing door lock of electric power, communication, energy storage, automation control manufacturing industry, it is a high sealing door double connecting rod lock mechanism. BACKGROUND

[0002] The high sealing door is mainly used in the field of van, container, freight railway, and is transported through the whole type closed independent structure of hanging or integration, so that the transportation condition, sanitary condition and safety and integrity of goods are significantly improved. The high sealing door generally locks the cabinet door through the connecting rod, and the connecting rod lock needs to be installed with a guide piece, a positioning piece and other locking fittings on the door plate, and a multi-step assembly step is needed to realize the locking action of the cabinet lock body. With the improvement of the waterproof, dustproof and sealing requirements of the cabinet industry, part of the structure design of the above high sealing door is also applied to the cabinet, and some similar products adopt handle lock and multi-point locking structure design to realize high sealing locking. For example, the utility model discloses a high sealing door lock with the publication number CN221627958U and the publication date of August 30, 2024, and the utility model name is "high sealing door lock". The heaven and earth rod of the high sealing door lock includes a rack heaven and earth rod and an upper and lower heaven and earth rod, one end of the rack heaven and earth rod is connected with the connecting rod, and the other end is connected with one end of the upper and lower heaven and earth rod of the pre-locking mechanism. The rack body of the point lock mechanism is engaged with the auxiliary gear on one side of the inner bottom of the point lock base through the tooth opening on one side, the rack body is connected with the rack heaven and earth rod at the top through the rivet at one end, and the other end penetrates the point lock base. The auxiliary gear is connected with the flexible steel bolt through the auxiliary transmission shaft extending into the point lock base. The other end of the upper and lower heaven and earth rod penetrates the rod guide of the pre-locking mechanism and is hinged with the top of the pre-pressing piece. One end of the pre-pressing piece is bent downward and upward, and is abutted with the door plate. However, the structure design of the above product and similar products leads to the increase of the locking force of the locking mechanism. The traditional single connecting rod structure is unbalanced in force transmission, which leads to insufficient locking force and poor locking feel. SUMMARY

[0003] In order to overcome the above shortcomings, the utility model provides a high sealing door double connecting rod lock mechanism to solve the technical problems of the single connecting rod structure and long locking stroke of the existing similar products, which leads to unbalanced force transmission, insufficient locking force and poor locking feel. The purpose is realized through the following technical scheme.

[0004] A high-sealing double-link lock mechanism for doors includes a main lock with a main tightening bolt that is Z-shaped. Extending transmission bars are located on both sides of the main lock. These transmission bars, via two vertical rods, drive the secondary tightening bolt of the secondary lock to rotate synchronously and on the same side, along with the main tightening bolt. The secondary tightening bolt is also Z-shaped. The main and secondary locks are fixedly mounted to the door panel. The key structural design feature is that the vertical rods include a first main connecting rod and a first secondary connecting rod. These two rods are symmetrically arranged on both sides of the main lock, with one end connected to the extended transmission bar. The other end of each rod is connected to one end of a rack within the secondary lock. The rack's teeth are symmetrically arranged and simultaneously mesh with a secondary gear at one end of the secondary drive shaft within the secondary lock. The secondary tightening bolt is located at the other end of the secondary drive shaft. Guide components are located at corresponding positions on the first main and secondary connecting rods, and these guide components are fixedly mounted to the door panel. This improves the balance of force transmission and compensates for the insufficient locking force by setting up a double-linkage method with a first main link and a first auxiliary link; the above-mentioned guide components can be set or omitted as needed.

[0005] A rocker arm is provided between the rack and the first main connecting rod and the first auxiliary connecting rod. The middle of the rocker arm is located at the auxiliary transmission shaft at the auxiliary tightening bolt and auxiliary gear, and the two ends of the rocker arm are simultaneously hinged and linked with the corresponding rack, the first main connecting rod, and the first auxiliary connecting rod. The above structure further improves the linkage stability of the racks on both sides through the rocker arm.

[0006] One end of a symmetrical rack of the first main connecting rod is integrally connected to one end of the second main connecting rod. The other end of the second main connecting rod is integrally connected to one end of the locking rod of the locking point assembly. The other end of the locking rod is inserted into the door frame, or the other end of the locking rod is hinged to a pre-compression member, which is L-shaped. Another guide assembly is provided at the corresponding position of the second main connecting rod. The above is an embodiment in which the locking rod locks the corresponding side of the door panel by means of a pre-compression member or by direct insertion into the door frame.

[0007] The locking point assembly is fixed to the door panel via a guide member, and the locking point rod passes through the guide member, which is bent into a Z-shape. The above is an embodiment in which the locking point rod is further fixed and guided by the guide member. The locking point rod can also be directly connected to the second main connecting rod as a whole. The structural design of the guide member solves the problem of difficulty in locking caused by cabinet size deviation.

[0008] The guide member has an elastic block installed in its Z-shaped groove, and the elastic block is fixed to the through locking rod. This allows for fine-tuning through the elastic material of the elastic block.

[0009] The one end of the main tightening bolt of the main lock is fixedly arranged at the protruding end of the main transmission shaft through a nut and a flat key, the outer diameter of the main transmission shaft in the main base of the main lock is provided with a main column sleeve, and the main transmission shaft in the main lock is inserted into the L-shaped sliding hole on the two sides of the main column sleeve through a pin.

[0010] When the end of the main transmission shaft in the main base of the main lock is engaged with the driving gear at one end of the rotating shaft in the main base through the driven gear, the driving gear on the two sides is engaged with the tooth holes of the transmission bars on the two sides at the same time, the other end of the rotating shaft is hinged with one end of the handle in the handle groove at the top of the base, the other end of the handle in the handle groove of the base is provided with a lock core assembly, the rotating shaft, the driving gear, the driven gear and the main column sleeve are arranged in the bottom of the main base through the main pressing plate, the main transmission shaft protrudes from the shaft table protruding from the bottom of the main pressing plate, and rubber pads are arranged at the main tightening bolts on the two sides of the main transmission shaft. The above is a specific structural example of the application of the handle flat lock in the mechanism, and the cylindrical lock can also drive the main transmission shaft in the main base to directly rotate, or drive the driving gear in the main base to directly rotate, and the rubber pads facilitate the realization of fine adjustment function through the elastic material.

[0011] The one end of the main tightening bolt of the main lock is fixedly arranged at the protruding end of the main transmission shaft through a nut and a flat key, the outer diameter of the main transmission shaft in the main base of the main lock is provided with a main column sleeve, and the main transmission shaft in the main lock is inserted into the L-shaped sliding hole on the two sides of the main column sleeve through a pin. Another rubber pad is arranged at the vice tightening bolt on the two sides of the vice transmission shaft. The above is a specific structural example of the vice tightening bolt.

[0012] The utility model discloses a reasonable structure design, and production, installation, convenient to use, good stability, lock more, and the linkage effect is good, especially balanced transmission force, locking force is big, and the locking hand feeling is good, and it is suitable for being used as high sealing door double connecting rod lock mechanism and the structural improvement of similar products. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the embodiment three-dimensional structure schematic diagram of the utility model, and A part and B part have been framed in the drawing.

[0014] Figure 2 It is Figure 1 The rear three-dimensional structure schematic diagram of the utility model, and C part has been framed in the drawing.

[0015] Figure 3 It is Figure 1 The A part close-up of the utility model.

[0016] Figure 4 It is Figure 1 The B part close-up of the utility model.

[0017] Figure 5 It is Figure 4 The sectional structure schematic diagram of the utility model.

[0018] Figure 6 is Figure 5 the internal structure diagram, the main pressing plate and the main tightening bolt are omitted.

[0019] Figure 7 is Figure 2 the C part of the enlarged view.

[0020] Figure 8 is Figure 7 the internal structure diagram, the vice base and the vice tightening bolt are omitted.

[0021] Figure No. and name: 1, main lock, 101, main tightening bolt, 102, main base, 103, main pressing plate, 104, main transmission shaft, 105, main column sleeve, 106, transmission bar, 107, rotating shaft, 108, handle, 109, lock core assembly, 2, guide assembly, 3, first main connecting rod, 4, first vice connecting rod, 5, vice lock, 501, vice tightening bolt, 502, vice base, 503, vice transmission shaft, 504, vice column sleeve, 505, swing rod, 506, rack, 6, second main connecting rod, 7, lock point assembly, 701, guide piece, 702, lock point rod, 703, pre-pressing piece, 704, elastic block. Embodiment

[0022] The structure and use of the utility model will be further described in combination with the drawings. As shown in Figures 1-8 the main lock 1 of the mechanism is provided with a main tightening bolt 101, the main tightening bolt is Z-shaped and curved, the two sides of the main lock are respectively provided with an extended transmission bar 106, the two sides of the transmission bar drive the vice tightening bolt 501 of the vice lock 5 to rotate synchronously and on the same side with the main tightening bolt, the vice tightening bolt is Z-shaped and curved, and the main lock and the vice lock are fixedly arranged on the door plate. The specific structure is as follows: the above-mentioned overhead and underground rods include a first main connecting rod 3 and a first vice connecting rod 4, the first main connecting rod and the first vice connecting rod are symmetrically arranged on the two sides of the main lock and are integrally connected with the extended transmission bar at one end, the other end of the first main connecting rod and the first vice connecting rod is integrally connected with one end of the rack 506 in the vice lock, the tooth openings on one side of the rack are symmetrically arranged and are simultaneously engaged with the vice gear on one end of the vice transmission shaft 503, the vice tightening bolt is arranged on the other end of the vice transmission shaft, the corresponding positions of the first main connecting rod and the first vice connecting rod are provided with a guide assembly 2, and the guide assembly is fixedly arranged on the door plate. Meanwhile, the swing rod 505 is arranged between the rack and the connecting position of the first main connecting rod and the first vice connecting rod, the middle of the swing rod is arranged to swing the vice transmission shaft at the positions of the vice tightening bolt and the vice gear, and the two ends of the swing rod are simultaneously hinged and connected with the corresponding rack and the first main connecting rod and the first vice connecting rod.

[0023] Furthermore, one end of one of the symmetrical racks of the first main connecting rod is integrally connected to one end of the second main connecting rod 6. The other end of the second main connecting rod is integrally connected to one end of the locking rod 702 of the locking point assembly 7. The other end of the locking rod is hinged to the pre-compression member 703, which is L-shaped. Another guide assembly is provided at the corresponding position of the second main connecting rod. The locking point assembly is fixed to the door panel by the guide member 701. The locking rod passes through the guide member, which is bent into a Z-shape. An elastic block 704 is provided in the Z-shaped groove of the guide member, and the elastic block is fixed to the through locking rod 702.

[0024] Furthermore, one end of the main tightening bolt of the main lock is fixed to the protruding end of the main drive shaft 104 by a nut and a key. The main drive shaft is provided with a main sleeve 105 on the outer diameter of the main drive shaft inside the main base 102 of the main lock. The main drive shaft inside the main lock is inserted into the L-shaped sliding holes on both sides of the main sleeve by a pin. The end of the main drive shaft inside the main base of the main lock meshes with the driving gear at one end of the rotating shaft 107 inside the main base through the driven gear. At the same time, both sides of the driving gear mesh with the tooth holes at the transmission bars on both sides. The other end of the rotating shaft is hinged to one end of the handle 108 in the handle groove at the top of the base. The other end of the handle in the handle groove of the base is provided with a lock core assembly 109. The rotating shaft, driving gear, driven gear, and main sleeve are set in the bottom of the main base through the main pressure plate 103. The main drive shaft extends out of the protruding shaft platform at the bottom of the main pressure plate. Rubber gaskets are provided at the main tightening bolts on both sides of the main drive shaft. One end of the secondary tightening bolt of the secondary lock is fixed to the protruding end of the secondary drive shaft 503 by another nut and a key. The secondary base 502 of the secondary lock has a secondary column sleeve 504 on the outer diameter of the secondary drive shaft. The secondary drive shaft inside the secondary lock is inserted into the L-shaped sliding holes on both sides of the secondary column sleeve by another pin. Another rubber gasket is provided at the secondary tightening bolt on both sides of the secondary drive shaft.

[0025] In use, turning the handle of the main lock causes the rotating shaft inside the main base to rotate. The rotating shaft drives the drive gear, which in turn drives the transmission bars on both sides to move synchronously through the driven gear. The transmission bars drive the first main link and the first auxiliary link of the upper and lower linkage assembly to move up and down. At the same time, the main tightening bolt of the main lock and the auxiliary tightening bolt of the auxiliary lock rotate. The first main link and the first auxiliary link drive the locking rod of the locking point assembly through the second main link. The pre-compression component of the locking point assembly is tightened or loosened, thereby realizing the locking, unlocking and compression sealing functions.

[0026] In summary, this mechanism is a double-link, multi-point locking and tightening high-sealing door lock structure. Its double-link structure features balanced force transmission, a large locking capacity, and a good locking feel, overcoming the shortcomings of traditional single-link structures. Furthermore, the main and auxiliary locks employ a spiral structure. When locking, the two tightening bolts are first rotated to tighten, simultaneously achieving a seal. When unlocking, the pre-compression component is first released, and then the two tightening bolts are rotated to open, thus unlocking the door.

Claims

1. A high-sealing double-link lock mechanism for a door, wherein the main lock (1) of the mechanism is provided with a main tightening bolt (101), the main tightening bolt is bent in a Z-shape, and the two sides of the main lock are respectively provided with protruding transmission bars (106), the two transmission bars respectively drive the auxiliary tightening bolt (501) of the auxiliary lock (5) to rotate synchronously and on the same side with the main tightening bolt through the two side top and bottom rods, the auxiliary tightening bolt is bent in a Z-shape, and the main lock and auxiliary lock are fixedly installed on the door panel; characterized in that The heaven and earth rod comprises first main connecting rods (3) and first auxiliary connecting rods (4), the first main connecting rods and the first auxiliary connecting rods are symmetrically arranged on both sides of a main lock (1) and are integrally connected with extended transmission bars (106) at one end, the other end of the first main connecting rods and the first auxiliary connecting rods is integrally connected with one end of a rack (506) in an auxiliary lock (5), the tooth opening on one side of the rack is symmetrically arranged and is engaged with an auxiliary gear at one end of an auxiliary transmission shaft (503) in the auxiliary lock, an auxiliary tightening steel bolt (501) is arranged at the other end of the auxiliary transmission shaft, guide assemblies (2) are arranged at corresponding positions of the first main connecting rods and the first auxiliary connecting rods, and the guide assemblies are fixedly arranged on a door plate.

2. The high seal door double link lock mechanism of claim 1, wherein The rack (506) is provided with a swing rod (505) between the connection positions of the first main connecting rods (3) and the first auxiliary connecting rods (4), the swing rod is arranged to swing on the auxiliary transmission shaft (503) at the positions of the auxiliary tightening steel bolt (501) and the auxiliary gear, and the two ends of the swing rod are hingedly connected with the corresponding racks and the first main connecting rods and the first auxiliary connecting rods.

3. The high seal door double link lock mechanism of claim 1, wherein One end of one rack (506) of the first main connecting rod (3) is integrally connected with one end of a second main connecting rod (6), the other end of the second main connecting rod is integrally connected with one end of a lock point rod (702) of a lock point assembly (7), the other end of the lock point rod is inserted into a door frame, or the other end of the lock point rod is hingedly connected with a pre-pressing piece (703), the pre-pressing piece is L-shaped, and the other guide assembly (2) is arranged at a corresponding position of the second main connecting rod.

4. The high seal door double link lock mechanism of claim 3, wherein The lock point assembly (7) is fixedly arranged on the door plate through a guide piece (701), the lock point rod (702) is arranged to penetrate through the guide piece, and the guide piece is bent into a U-shaped form.

5. The high seal door double link lock mechanism of claim 4, wherein An elastic block (704) is arranged in the U-shaped groove of the guide piece (701), and the elastic block is fixed to the penetrating lock point rod (702).

6. The high seal door dual link lock mechanism of claim 1, wherein One end of a main tightening steel bolt (101) of the main lock (1) is fixedly arranged on an extended end of a main transmission shaft (104) through a nut and a flat key, an outer diameter of the main transmission shaft in a main base (102) of the main lock is provided with a main column sleeve (105), and the main transmission shaft in the main lock is inserted into L-shaped sliding holes on both sides of the main column sleeve through a pin.

7. The high seal door double link lock mechanism of claim 6, wherein The end of the main transmission shaft (104) in the main base (102) of the main lock is engaged with a driving gear at one end of a rotating shaft (107) in the main base through a driven gear, the driving gear is engaged with tooth holes at positions of the transmission bars (106) on both sides at the same time, the other end of the rotating shaft is hingedly connected with one end of a handle (108) in a handle groove on the top of the base, the other end of the handle in the handle groove of the base is provided with a lock core assembly (109), the rotating shaft, the driving gear, the driven gear and the main column sleeve (105) are arranged in the bottom of the main base through a main pressing plate (103), the main transmission shaft is extended to a shaft platform protruding from the bottom of the main pressing plate, and rubber gaskets are arranged at positions of the main tightening steel bolts (101) on both sides of the main transmission shaft.

8. The high seal door double link lock mechanism of claim 1, wherein The one end of the auxiliary tightening bolt (501) of the auxiliary lock (5) is fixed on the protruding end of the auxiliary transmission shaft (503) through another nut and a flat key. The outer diameter of the auxiliary transmission shaft in the auxiliary base (502) of the auxiliary lock is provided with an auxiliary column sleeve (504). The auxiliary transmission shaft is inserted into the L-shaped sliding hole on both sides of the auxiliary column sleeve through another pin. Another rubber gasket is arranged at the auxiliary tightening bolt on both sides of the auxiliary transmission shaft.

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