Mode-switchable intelligent bolt lock for sealing door

Abstract

The utility model provides an intelligent bolt lock with switchable modes for a sealing door. One section of the lead screw is a threaded section, the lead screw is connected with the flange through a fastener, the flange is in threaded connection with the threaded section of the lead screw, and the other section of the lead screw penetrates through the first limiting unit and is fixed to one end of the bevel gear shaft through a fastener; the other end of the bevel gear shaft penetrates through the second bevel gear and is located in an adjusting groove formed in the manual release shaft. The second bevel gear is externally meshed with the first bevel gear to form an electric mode, and the second bevel gear is connected with the bevel gear shaft through a flat key pin. A first key groove is formed in the second bevel gear and is longer than the flat key pin. The end face, facing the second bevel gear, of the adjusting groove in the manual release shaft is open, the adjusting groove abuts against the first end face of the second bevel gear to bear the second bevel gear, and at least one second key groove extending in the axial direction is formed in the adjusting groove; and a compression spring. According to the utility model, free switching between a manual mode and an electric mode can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of smart electric latch locks for smart access, and in particular relates to a mode-switchable smart latch lock for sealing doors. Background Art

[0002] The doors of large logistics or factories, which serve as warehouses or production bases, must be sealed to effectively prevent the ingress of wind and sand and the escape of gases or radiation. However, the sealing strips are elastic, and if they are not tightened, it is difficult to ensure a long-term sealing effect. Furthermore, it is impossible to manually inspect the sealing of doors over 4 meters in length and width.

[0003] However, traditional latch locks are either manual or electric and cannot take into account both operating modes at the same time. Summary of the Invention

[0004] The purpose of this utility model is to provide a switchable intelligent latch lock for sealing doors, which can switch between manual mode and electric mode. The technical solution adopted is as follows:

[0005] A mode-switchable deadbolt lock for a sealed door, comprising:

[0006] The lock tongue 1 passes through the waterproof cover 8 and can move along the waterproof cover 8; a limit fixing bracket 9 is provided on the waterproof cover 8, and a guide groove is provided on the limit fixing bracket 9. The guide groove cooperates with the guide column 6, and the guide column 6 is provided on the lock tongue 1;

[0007] The lead screw 10 has a threaded section at one end, which is connected to the flange 7 via a fastener. The flange 7 is threadedly connected to the threaded section of the lead screw 10. The other end of the lead screw 10 passes through a first limiting unit and is fixed to one end of a bevel gear shaft 18 via a fastener. The other end of the bevel gear shaft 18 passes through the second bevel gear 21 and is located in an adjustment slot provided on the manual release shaft 19. The first limiting unit is provided in the waterproof housing 8.

[0008] The bevel gear 21 is externally meshed with the bevel gear 14 to form an electric mode. The bevel gear 21 is connected to the bevel gear shaft 18 via a flat key pin. A keyway 1 is provided on the bevel gear 21, the length of which is greater than the length of the flat key pin. The bevel gear 14 is connected to the drive host 11 via a fastener.

[0009] The adjustment slot on the manual release shaft 19 is open toward the end surface of the second bevel gear 21 and abuts against the first end surface of the second bevel gear 21 to receive the second bevel gear 21. At least one second keyway extending in the axial direction is formed on the adjustment slot;

[0010] The manual release shaft 19 has a section away from the adjustment slot, passes through the second limiting unit and extends out of the waterproof housing 8; the second limiting unit is disposed on the waterproof housing 8; the manual release shaft 19 includes a step, and the second limiting unit receives the step in the electric mode;

[0011] and a compression spring 13, which is sleeved on the bevel gear shaft 18, with one end thereof abutting against the first limiting unit and the other end thereof abutting against the second end surface of the bevel gear 21; when in the locked state in the manual mode, the compression spring 13 is in a compressed state;

[0012] In electric mode, the flat key pin and the second key slot on the manual release shaft 19 are staggered, and an axial height difference is formed between the bevel gear shaft 18 and the adjustment slot on the manual release shaft 19;

[0013] In manual mode, the bevel gear 2 21 is higher than the bevel gear 1 14 , and the flat key pin cooperates with a No. 2 keyway on the manual release shaft 19 .

[0014] Preferably, it further includes a gasket, which abuts against the first limiting unit and is connected to the compression spring 13.

[0015] Preferably, the first limiting unit includes:

[0016] A T-shaped bearing seat 1 22 is connected to the waterproof cover 8 via fasteners and has a first mounting hole formed thereon; a first slot is formed on the T-shaped bearing seat 1 22, and the first slot connects the first mounting hole and the outside world;

[0017] The graphite brass bushing 23 is located in the No. 1 mounting hole and cooperates with the optical axis section of the screw rod 10.

[0018] Preferably, the second limiting unit includes:

[0019] A second T-shaped bearing seat 5 is connected to the waterproof cover 8 by fasteners and has a second mounting hole; a second slot is formed on the second T-shaped bearing seat 5, and the second slot connects the second mounting hole and the outside world;

[0020] The second graphite brass sleeve 16 is located in the second mounting hole and cooperates with the hexagonal screw shaft of the manual release shaft 19.

[0021] Preferably, it further comprises a stamped shaft seat 3, which is arranged on the waterproof cover 8;

[0022] The stamping shaft seat 3 is provided with a waterproof sealing ring 17 and a skeleton oil seal 2 in sequence, and the skeleton oil seal 2 is against the inner wall surface of the stamping shaft seat 3;

[0023] The lock tongue 1 passes through the waterproof sealing ring 17, the skeleton oil seal 2 and the end surface of the stamping shaft seat 3 away from the lock tongue 1 in sequence.

[0024] Preferably, a section of the manual release shaft 19 extends out of the waterproof housing 8 and is connected to the waterproof seal 20 .

[0025] Preferably, the lead screw 10 is a T10 lead screw.

[0026] Preferably, in manual mode, along the axial direction, the height difference between the bevel gear 2 21 and the bevel gear 1 14 is 5 mm.

[0027] Preferably, the latch locks are used in pairs and are both installed on the sealed door, wherein one latch lock serves as a primary lock and is installed on the upper section of the sealed door, and the other latch lock serves as a secondary lock and is installed on the lower section of the sealed door.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] Electric mode: drive the main engine 11 to rotate, drive the main engine 11 to drive the bevel gear 14 to rotate, bevel gear 2 21 engages with bevel gear 14, the rotation of bevel gear 2 21 drives the bevel gear shaft 8, the bevel gear shaft 8 drives the screw rod 10 to rotate, the screw rod 10 drives the flange 7 to rotate, and the flange 7 drives the lock tongue 1 to move up and down.

[0030] When locking in manual mode: open the waterproof seal 20, insert the hexagonal wrench into the hexagonal screw on the manual release shaft 19, rotate the hexagonal wrench and push it upward 5mm;

[0031] The manual release shaft 19 drives the bevel gear 2 21 to move upward by 5 mm. At this time, the flat key pin is adapted to the No. 2 keyway on the end of the manual release shaft 19, and the bevel gear 2 21 is not engaged with the bevel gear 1 14.

[0032] Since the bevel gear 21 is connected to the manual release shaft 19 through a flat key pin, continue to rotate the hexagonal wrench to drive the manual release shaft 19 to rotate. The rotation of the bevel gear 21 drives the bevel gear shaft 8. The bevel gear shaft 8 drives the screw 10 through the set screw. The screw 10 drives the flange 7. The flange 7 drives the lock tongue 1 to move upward.

[0033] When unlocking in manual mode: After the hexagonal wrench is separated from the manual release shaft 19, the compression spring 13 on the bevel gear shaft 18 is released, and the bevel gear 2 21 and the manual release shaft 19 are pushed down 5mm. At this time, the bevel gear 2 21 and the bevel gear 1 14 are re-engaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A front view of a smart deadbolt lock with switchable modes for sealing a door;

[0035] Figure 2 A perspective view of a smart latch lock with switchable modes for sealing a door;

[0036] Figure 3 This is a connection diagram of the lead screw, bevel gear shaft and manual release shaft;

[0037] Figure 4 This is a schematic diagram of the relative positions of the flat key pin and the keyway on the manual release shaft in electric mode;

[0038] Figure 5 Schematic diagram of the position of the manual release shaft and bevel gear shaft in electric mode;

[0039] Figure 6 This is the structural diagram of the manual release shaft;

[0040] Figure 7 This is the structural diagram of the No. 1 limit unit and the No. 2 limit unit;

[0041] Figure 8 This is a positional relationship diagram between the manual release shaft and the bevel gear shaft in electric mode;

[0042] Figure 9 This is a schematic diagram of the keyway and flat key pin on the manual release shaft in the unlocked state in manual mode;

[0043] Figure 10 This is a schematic diagram of the keyway and flat key pin on the manual release shaft in the locked state in manual mode;

[0044] Figure 11 This is the installation diagram when the latch lock is used as the main lock;

[0045] Figure 12 This is the installation diagram when the latch lock is used as a secondary lock.

[0046] Among them, 1-lock tongue, 2-skeleton oil seal, 3-stamping shaft seat, 4-limit synchronization plate, 5-waterproof limit switch, 6-guide column, 7-flange, 8-waterproof cover, 9-limit fixing bracket, 10-screw, 11-drive host, 12-wire clamp, 13-compression spring, 14-bevel gear one, 15-T-type bearing seat two, 16-graphite brass sleeve two, 17-waterproof sealing ring, 18-bevel gear shaft, 19-manual release shaft, 20-waterproof seal, 21-bevel gear two, 22-T-type bearing seat one, 23-graphite brass sleeve one. DETAILED DESCRIPTION

[0047] The following is a more detailed description of the switchable mode smart latch lock for a sealed door of the present invention, with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention as described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0048] like Figures 1 to 10 , a mode-switchable deadbolt lock for a sealed door, comprising:

[0049] The locking tongue 1 passes through the waterproof cover 8 and can move along the waterproof cover 8 .

[0050] The screw 10 is a T10 screw, one section of which is a threaded section. The screw 10 is connected to the flange 7 by screws, and the flange 7 is threadedly connected to the threaded section of the screw 10. The other section (optical axis section) passes through the No. 1 limiting unit and is fixed to one end of the bevel gear shaft 18 by fasteners; the other end of the bevel gear shaft 18 passes through the bevel gear 2 21 and is located in the adjustment groove opened on the manual release shaft 19; the No. 1 limiting unit is arranged in the waterproof cover 8.

[0051] The lead screw 10 and the No. 1 limiting unit are clearance-fitted, that is, the optical axis section of the lead screw 10 can rotate within the No. 1 limiting unit in both the electric mode and the manual mode.

[0052] The second bevel gear 21 is externally meshed with the first bevel gear 14 to form an electric mode.

[0053] Bevel gear 21 is connected to bevel gear shaft 18 via a flat key pin; a keyway No. 1 is provided on bevel gear 21, the length of which is greater than the length of the flat key pin, so that bevel gear 21 moves along the flat key pin to achieve switching between the two modes.

[0054] The bevel gear shaft 18 only performs rotational motion and has no linear displacement.

[0055] The bevel gear 14 is connected to the driving host 11 through a fastener. Specifically, the driving host 11 is a motor.

[0056] like Figure 7 As shown, the manual release shaft 19 includes a first shaft and a second shaft connected in sequence. The outer diameter of the first shaft is larger than the outer diameter of the second shaft to form a step. The second limit unit receives the step to receive the manual release shaft 19 in the electric mode. The second shaft is a hexagonal screw shaft.

[0057] An adjustment slot is formed on the first axis of the manual release shaft 19, which is open toward the end surface of the second bevel gear 21 and abuts against the first end surface of the second bevel gear 21 to receive the second bevel gear 21, and has at least one second keyway extending in the axial direction;

[0058] A section (second axis) of the manual release shaft 19 away from the adjustment slot passes through the No. 2 limiting unit and extends out of the waterproof cover 8; a section (second axis) of the manual release shaft 19 extending out of the waterproof cover 8 is connected to the waterproof seal 20, that is, the waterproof seal 20 is clamped on the second axis of the manual release shaft 19.

[0059] The manual release shaft 19 and the second limiting unit are clearance-fitted, that is, in the manual mode, the second axis of the manual release shaft 19 rotates within the first limiting unit.

[0060] The second limiting unit is arranged on the waterproof housing 8 .

[0061] The compression spring 13 is sleeved on the bevel gear shaft 18, with one end thereof abutting against the first limiting unit and the other end thereof abutting against the second end face of the second bevel gear 21; when in the locked state in the manual mode, the compression spring 13 is in a compressed state.

[0062] In this embodiment, a gasket is further included, which is connected to the compression spring and abuts against the first limiting unit.

[0063] That is, when unlocking is required in manual mode, after the hexagonal wrench is separated from the manual release shaft 19, the compression spring 13 on the bevel gear shaft 18 is released, and the bevel gear 21 and the manual release shaft 19 are pushed down 5mm. At this time, the bevel gear 21 and the bevel gear 1 14 are re-engaged.

[0064] In electric mode, the flat key pin is staggered with the second key slot on the manual release shaft 19. A height difference is formed along the axial direction between the bevel gear shaft 18 and the adjustment slot on the manual release shaft 19, such as Figure 8 As shown, the manual release shaft 19 can move along the bevel gear shaft 18 to perform mode switching.

[0065] like Figure 5 As shown, the "staggered arrangement" means that the No. 2 keyway and the flat key pin on the manual release shaft 19 are not on the same straight line along the axial direction.

[0066] In manual mode, bevel gear 21 is higher than bevel gear 1 14, and the flat key pin is engaged with a keyway on the manual release shaft 19. Specifically, along the axial direction, the height difference between bevel gear 21 and bevel gear 1 14 is 5 mm.

[0067] like Figure 7 As shown, the No. 1 limit unit includes:

[0068] A T-shaped bearing seat 22 is connected to the waterproof cover 8 through fasteners, and a mounting hole No. 1 is provided on the T-shaped bearing seat 22; a slot No. 1 is provided on the T-shaped bearing seat 22, and the slot No. 1 connects the mounting hole No. 1 and the outside world; fasteners are installed at the slot No. 1 to clamp and fix the graphite brass sleeve 23 to the T-shaped bearing seat 22.

[0069] The graphite brass sleeve 23 is located in the No. 1 mounting hole and cooperates with the optical axis section of the screw rod 10.

[0070] The second limit unit includes:

[0071] The T-shaped bearing seat 2 5 is connected to the waterproof cover 8 by fasteners, and a No. 2 mounting hole is provided on it; a No. 2 seam is provided on the T-shaped bearing seat 2 5, and the No. 2 seam connects the No. 2 mounting hole and the outside world; fasteners are installed at the No. 2 seam to clamp the graphite brass sleeve 2 16 to the T-shaped bearing seat 2 5.

[0072] The graphite brass sleeve 16 is located in the second mounting hole and cooperates with the hexagonal screw (unthreaded) shaft of the manual release shaft 19.

[0073] like Figure 1 As shown, it further includes a stamped shaft seat 3, which is arranged in a waterproof cover 8;

[0074] A waterproof sealing ring 17 and a skeleton oil seal 2 are sequentially arranged in the stamping shaft seat 3, and the skeleton oil seal 2 abuts against the inner wall surface of the stamping shaft seat 3;

[0075] The lock tongue 1 passes upward through the waterproof sealing ring 17 , the skeleton oil seal 2 and an end surface of the stamping shaft seat 3 away from the lock tongue 1 in sequence.

[0076] That is, a stamped fixed sleeve is installed at the moving part of the lock tongue, with a skeleton oil seal pressed inside. The skeleton oil seal wraps the lock tongue and moves up and down, and a waterproof gasket is superimposed on the skeleton oil seal to prevent dust or foreign matter from entering the oil seal and shortening its service life.

[0077] In addition, if Figure 1 As shown, a limiting synchronization plate 4 and a limiting fixing bracket 9 are provided on the waterproof cover 8.

[0078] The position limiting fixing bracket 9 is provided with a guide groove, which cooperates with a guide post 6, and the guide post 6 is arranged on the lock tongue 1. In addition, the position limiting fixing bracket 9 is also provided with a waterproof limit switch 5 and a wire clamp 12.

[0079] When the guide column 6 touches the waterproof limit switch, the waterproof limit switch sends a signal, and the signal is transmitted to the limit synchronization plate 4, which controls the upper and lower running positions of the lock tongue 1.

[0080] Working principle of this switchable deadbolt lock for sealing doors:

[0081] 1. Electric mode.

[0082] When the lock needs to be closed: the main engine 11 is driven to rotate forward, the main engine 11 drives the bevel gear 14 to rotate, the bevel gear 2 21 engages with the bevel gear 14, the rotation of the bevel gear 2 21 drives the bevel gear shaft 8, the bevel gear shaft 8 drives the screw rod 10 to rotate, the screw rod 10 drives the flange 7 to rotate, and the flange 7 drives the lock tongue 1 to move upward.

[0083] When unlocking is required: just drive the motor in reverse direction.

[0084] 2. Manual mode.

[0085] That is, when a power outage occurs, the system enters manual mode.

[0086] To lock: open the waterproof seal 20, insert the hexagonal wrench (located outside the waterproof cover 8) into the hexagonal screw on the manual release shaft 19, rotate the hexagonal wrench and push it upwards 5mm;

[0087] The manual release shaft 19 drives the bevel gear 2 21 to move upward by 5 mm. At this time, the flat key pin is adapted to the No. 2 keyway on the end of the manual release shaft 19, and the bevel gear 2 21 is not engaged with the bevel gear 1 14.

[0088] Among them, in the process of pushing upward 5mm, the No. 2 keyway on the manual release shaft 19 and the No. 1 keyway on the bevel gear 2 21 both move upward along the flat key pin, and finally the No. 1 keyway is adapted to one end of the flat key pin, and the No. 2 keyway is adapted to the other end of the flat key pin.

[0089] Since the bevel gear 21 is connected to the manual release shaft 19 through a flat key pin, continue to rotate the hexagonal wrench to drive the manual release shaft 19 to rotate. The rotation of the bevel gear 21 drives the bevel gear shaft 8. The bevel gear shaft 8 drives the screw 10 through the set screw. The screw 10 drives the flange 7. The flange 7 drives the lock tongue 1 to move upward.

[0090] When unlocking is required: after the hexagonal wrench is separated from the manual release shaft 19, the compression spring 13 on the bevel gear shaft 18 is released, and the bevel gear 2 21 and the manual release shaft 19 are pushed down 5mm. At this time, the bevel gear 2 21 and the bevel gear 1 14 are re-engaged, and the No. 2 keyway on the manual release shaft 19 is separated from the flat keyway.

[0091] Among them, in the process of pushing down 5mm, the No. 2 keyway on the manual release shaft 19 and the No. 1 keyway on the bevel gear 2 21 both move downward along the flat key pin, and finally the No. 1 keyway is still adapted to the flat key pin, and the No. 2 keyway is separated from the flat key pin.

[0092] Finally, insert the hexagonal wrench into the hexagonal screw on the manual release shaft 19, and rotate the hexagonal wrench in the opposite direction to complete the reset. Figure 4 、 Figure 8 shown.

[0093] In addition, large sealed doors are equipped with independent primary and secondary locks on the upper and lower parts to prevent deformation of the large closed door, which can lead to inconsistent locking of the upper and lower locks. The installation position of the primary and secondary locks can be adjusted according to the site conditions. Large sealed doors are mainly equipped with primary and secondary locks, and single locks are optional depending on the structure and usage requirements of the door. This embodiment is applicable to this technology.

[0094] Large sealed doors are equipped with sealing rings around the door frame. After the door is closed, the sealing effect of the sealing ring at the hinge position is better than that at the door gap position. At this time, the main and secondary locks press the sealing ring at the door gap through the mechanical displacement of the lock tongue and the female head.

[0095] The limit synchronization plate can synchronize the operating positions of the main and auxiliary latch motors.

[0096] When the guide column runs to the waterproof limit switch, the limit synchronization board will cut off the operation of the motor and at the same time release a large current to the overall control system.

[0097] When the other latch lock has not reached the unlock limit switch, the driving host will consume the current of the latch lock that is already in place. When both sets of latch locks are in place and the large current released at the same time cannot be consumed, the main control system will cut off the control power supply of this line.

[0098] Therefore, after the door is closed, the lock tongue is inserted into the door beam at an oblique angle, so that the door body is pressed inward by 2 to 2.5 centimeters. The product has a certain waterproof performance and can be installed outdoors. Figures 11-12 As shown, this lock consists of a primary and secondary lock, operating synchronously. Traditional latch locks lack strength or are too bulky, and utilize a single bolt for both. While door deformation and distortion make adjustment impossible, the separate design effectively adjusts the bolt's position. A controller controls the bolt's elevation, while the primary and secondary latch boxes have built-in limit synchronization plates for synchronized operation. Even if there is any discrepancy, the controller compensates, ensuring both bolts are in position before disconnecting the power supply. In an emergency, the bolt can be extended or retracted by inserting the manual release key and directly rotating the output shaft. This is achieved through a transmission mechanism.

[0099] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other variation to the technical solution and technical content disclosed herein shall be deemed to fall within the scope of the present invention and remain within the scope of protection of the present invention.

Claims

1. A mode-switchable smart latch lock for sealing doors, characterized in that: include: A lock tongue (1) passes through the waterproof housing (8) and can move along the waterproof housing (8); a position-limiting fixing bracket (9) is provided on the waterproof housing (8); a guide groove is provided on the position-limiting fixing bracket (9); the guide groove cooperates with a guide column (6); and the guide column (6) is provided on the lock tongue (1); A screw rod (10), one section of which is a threaded section, the screw rod (10) is connected to the flange (7) via a fastener, the flange (7) is threadedly connected to the threaded section of the screw rod (10), and the other section thereof passes through a first limiting unit and is fixed to one end of a bevel gear shaft (18) via a fastener; the other end of the bevel gear shaft (18) passes through a second bevel gear (21) and is located in an adjustment slot provided on a manual release shaft (19); the first limiting unit is provided on the waterproof housing (8); The bevel gear 2 (21) is externally meshed with the bevel gear 1 (14) to form an electric mode, and the bevel gear 2 (21) is connected to the bevel gear shaft (18) via a flat key pin; a keyway No. 1 is provided on the bevel gear 2 (21), the length of which is greater than the length of the flat key pin; the bevel gear 1 (14) is connected to the driving host (11) via a fastener; The adjustment groove on the manual release shaft (19) is open toward the end face of the second bevel gear (21) and abuts against the first end face of the second bevel gear (21) to receive the second bevel gear (21), and is provided with at least one second keyway extending in the axial direction; A section of the manual release shaft (19) away from the adjustment slot passes through the second limiting unit and extends out of the waterproof housing (8); the second limiting unit is arranged on the waterproof housing (8); the manual release shaft (19) includes a step, and the second limiting unit bears the step in the electric mode; and a compression spring (13), which is sleeved on the bevel gear shaft (18), one end of which abuts against the first limiting unit, and the other end of which abuts against the second end face of the second bevel gear (21); when in the locked state in the manual mode, the compression spring (13) is in a compressed state; In the electric mode, the flat key pin and the second key slot on the manual release shaft (19) are arranged in an interlaced manner, and a height difference along the axial direction is formed between the bevel gear shaft (18) and the adjustment slot opened on the manual release shaft (19); In manual mode, the bevel gear 2 (21) is higher than the bevel gear 1 (14), and the flat key pin cooperates with a No. 2 keyway on the manual release shaft (19).

2. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: It further includes a gasket, which abuts against the first limiting unit and is connected to the compression spring (13).

3. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: The first limiting unit includes: A T-shaped bearing seat (22) is connected to the waterproof housing (8) via a fastener and has a No. 1 mounting hole formed thereon; a No. 1 slot is formed on the T-shaped bearing seat (22) and the No. 1 slot is connected to the No. 1 mounting hole and the outside world; A graphite brass bushing (23) is located in the No. 1 mounting hole and cooperates with the optical axis section of the screw rod (10).

4. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: The second limiting unit includes: A second T-shaped bearing seat (5) is connected to the waterproof cover (8) via a fastener and has a second mounting hole; a second slot is provided on the second T-shaped bearing seat (5), and the second slot is connected to the second mounting hole and the outside world; The graphite brass sleeve 2 (16) is located in the second mounting hole and cooperates with the hexagonal screw shaft of the manual release shaft (19).

5. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: It further includes a stamped shaft seat (3) which is arranged on the waterproof cover (8); A waterproof sealing ring (17) and a skeleton oil seal (2) are sequentially arranged in the stamping shaft seat (3), and the skeleton oil seal (2) abuts against the inner wall surface of the stamping shaft seat (3); The lock tongue (1) sequentially passes through the waterproof sealing ring (17), the skeleton oil seal (2) and an end surface of the stamping shaft seat (3) away from the lock tongue (1).

6. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: A section of the manual release shaft (19) extends out of the waterproof housing (8) and is connected to the waterproof seal (20).

7. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: The screw rod (10) is a T10 screw rod.

8. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: In manual mode, the height difference between the bevel gear 2 (21) and the bevel gear 1 (14) along the axial direction is 5 mm.

9. The mode-switchable smart latch lock for a sealed door according to claim 1, characterized in that: The latch locks are used in pairs and are both installed on the sealed door, wherein one latch lock serves as a main lock and is installed on the upper section of the sealed door, and the other latch lock serves as a secondary lock and is installed on the lower section of the sealed door.

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