Lock for sleeper bed of rail transit vehicle

Abstract

The invention discloses a lock for a sleeper bed of a rail transit vehicle. The lock comprises a swing rod lock, a spring bolt assembly, a rotating assembly, a gear locking assembly and a spring bolt seat. The swing rod lock and the rotating assembly are installed in the middle of the sleeping berth bed through fasteners, and a transmission support of the swing rod lock is in contact transmission with a shifting block welding piece of the rotating assembly. The spring bolt assembly is connected with the shifting block welding piece of the rotating assembly and extends to the spring bolt base in the length direction of the sleeping berth bed board. The gear locking assembly is installed on the carriage body, and the lock catch is opened under the action of the force of the torsional spring and abuts against the spring bolt base to achieve in-place closing and automatic locking. Manual unlocking, automatic locking and manual safety of the lifting sleeping berth bed system when the lifting sleeping berth bed system is closed in place are achieved, and safety is improved.

Description

Technical Field

[0001] The invention relates to the field of rail transit vehicles, and in particular to a lock for a berth bed in a rail transit vehicle. Background Art

[0002] The rail transit vehicle berth system often requires manual unlocking, manual locking and manual insurance, which is inconvenient to operate, especially the locking should be automatically performed when it is in the closed position to improve safety. Therefore, it is necessary to develop a new type of rail transit vehicle berth lock to achieve manual unlocking, automatic locking and manual insurance in the flip position. Summary of the invention

[0003] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a lock for a berth in a rail transit vehicle, which realizes manual unlocking, automatic locking and manual insurance of the lifting berth system when it is in the closed position, thereby improving safety.

[0004] Technical solution: A lock for a berth in a rail transit vehicle of the present invention is characterized in that it includes a rocker arm lock, a lock tongue assembly, a rotating assembly, a lock gear assembly and a lock tongue seat; the rocker arm lock and the rotating assembly are installed in the middle of the berth bed through fasteners, and the transmission bracket of the rocker arm lock is in contact with the shift block welding part of the rotating assembly for transmission; the lock tongue assembly is connected to the shift block welding part of the rotating assembly and extends to the lock tongue seat along the length direction of the berth bed board respectively; the lock gear assembly is installed on the car body, and the lock buckle is opened under the action of the torsion spring force and resists the lock tongue seat to achieve automatic locking when it is closed in place.

[0005] Among them, the rocker arm lock includes a transmission bracket, a main lock assembly, a retaining ring, a washer and a fastener; the rocker arm lock connects the transmission bracket and the main lock assembly into one through a retaining ring and a washer, and assembles the rocker arm lock to the berth bed through a fastener.

[0006] Among them, the main lock assembly includes a handle, a safety shaft, a lock box, a maintaining torsion spring, an unlocking disk, a second washer, a second retaining ring, a limit block, a bumper, a transition plate and a second fastener; the main lock assembly connects the handle, the safety shaft, the lock box, the limit block, the unlocking disk and the maintaining torsion spring into one through a second washer and a second retaining ring, and then uses a second fastener to connect the transition plate and the lock box into one.

[0007] Among them, the handle, unlocking disk, and maintaining torsion spring are installed on the lock box through a shaft retaining ring, the safety shaft and the limit block are installed on the lock box through a shaft retaining ring, and the limit block limits the rotation of the unlocking disk through the ball positioning, thereby limiting the handle operation to realize the manual safety function.

[0008] Among them, the lock tongue assembly includes a flange bearing 1, a compression spring, a washer 3 and a lock tongue pull rod; the two lock tongue assemblies are connected into one by a rotating assembly, and then fastened to the profile plate with a fastener 4. After assembly, the protrusion of the unlocking disk in the main lock assembly contacts one end of the transmission bracket, and the other end contacts the shift block welding part in the rotating assembly.

[0009] Among them, the washer three in the lock tongue assembly is inserted from the front end of the lock tongue pull rod to the flattened part, and then the torsion spring and the flange bearing one are inserted, the flange bearing one is installed in the lock tongue seat, the flange bearing one is against the front end of the compression spring, and the flange end face is against the lock tongue seat. When unlocking, the unlocking disk pushes the transmission bracket to rotate, and the transmission bracket then moves the shift block. The rotation of the shift block drives the lock tongue to extend to both ends, compresses the compression spring and pushes the lock gear lock buckle to disengage from the lock tongue seat, thereby realizing the manual unlocking function, and then the lock tongue is retracted by relying on the compression spring to reset.

[0010] Among them, the rotating assembly includes fastener three, pressure plate, flange bearing two, fastener four, shift block welding part and mounting plate; the rotating assembly is installed into an integrated structure through fastener, guide sleeve, pressure plate and flange bearing two, and the shift block welding part can rotate around the guide column of the mounting plate.

[0011] Among them, the lock gear assembly includes a limit support, a sleeve, a lock gear torsion spring, a lock buckle, a lock gear pin shaft and a lock tongue seat; the lock gear assembly is installed on the vehicle body by fastening screws, and the lock hook and the lock gear cooperate to achieve locking and unlocking.

[0012] When unlocking: use the square key to operate the safety shaft to rotate clockwise to release the safety. At this time, the limit block is free from the constraint on the unlocking disk. Hold the handle and press the handle clockwise until it is unlocked. During this process, the handle drives the unlocking disk to rotate, and the boss of the unlocking disk moves one end of the transmission bracket. The rotating assembly moves with the transmission bracket, and the rotating assembly drives the lock tongue assembly to move. The two lock tongue assemblies move relative to each other, and the front end of the lock tongue presses against the lock buckle until the lock tongue escapes from the lock gear to complete the unlocking.

[0013] When locked: Since the torsion spring and compression spring are both stressed when unlocked, the spring force is released after the handle is released, driving the lock tongue pull rod and the handle to automatically reset until the lock tongue and the lock gear overlap, completing the automatic locking and realizing the automatic locking function;

[0014] When installing the safety device: Use the square key to rotate the safety shaft counterclockwise until the bead and the limit block are interlocked to complete the safety device.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention adopts the self-resetting function of the cam, the shift block and the torsion spring, and mechanically cooperates to realize the manual unlocking and automatic locking of the berth lifting bed lock when it is in the open and closed positions; the modular design structure is simple, which meets the requirements of the internal product integration and human-machine interface of the berth bed lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0017] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0018] Figure 3 A schematic diagram of the structure of unlocking the sleeper bed lock of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the swing lever lock of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the main lock assembly of the present invention;

[0021] Figure 6 It is a schematic diagram of unlocking the swing lever lock of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the lock tongue assembly of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the rotating assembly of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the lock gear assembly of the present invention;

[0025] In the figure, 1 is a rocker lock; 2 is a lock tongue assembly; 3 is a rotating assembly; 4 is a lock gear assembly; 5 is a transmission bracket; 6 is a main lock assembly; 7 is a retaining ring 1; 8 is a washer 1; 9 is a fastener 1; 10 is a handle; 11 is a safety shaft; 12 is a lock box; 13 is a maintaining torsion spring; 14 is an unlocking disk; 15 is a washer 2; 16 is a retaining ring 2; 17 is a limit block; 18 is a bumper; 19 is a transition plate; 20 is a fastener 2; 21 is a flange bearing 1; 22 is a compression spring; 23 is a washer 3; 24 is a lock tongue pull rod; 25 is a fastener 3; 26 is a pressure plate; 27 is a flange bearing 2; 28 is a fastener 4; 29 is a shift block welding part; 30 is a mounting plate; 31 is a limit support; 32 is a sleeve; 33 is a lock gear torsion spring; 34 is a lock buckle; 35 is a lock gear pin shaft; 36 is a lock tongue seat. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The lock device for a berth in a rail transit vehicle of the present invention comprises a rocker arm lock 1, a lock tongue assembly 2, a rotating assembly 3, a lock gear assembly 4 and a lock tongue seat 36; the rocker arm lock 1 and the rotating assembly 3 are installed in the middle of the berth bed through fasteners, and the transmission bracket 5 of the rocker arm lock 1 contacts and transmits with the shift block welding piece 29 of the rotating assembly 3; the lock tongue assembly 2 is connected with the shift block welding piece 29 of the rotating assembly 3 and extends to the lock tongue seat 36 along the length direction of the berth bed board respectively; the lock gear assembly 4 is installed on the carriage body, and the lock buckle 34 is opened by the torsion spring force and abuts against the lock tongue seat 36 to realize automatic locking when it is closed in place.

[0028] The rocker arm lock 1 of the present invention comprises a transmission bracket 5, a main lock assembly 6, a retaining ring 7, a washer 8 and a fastener 9; the rocker arm lock 1 connects the transmission bracket 5 and the main lock assembly 6 into one body through the retaining ring 7 and the washer 8, and assembles the rocker arm lock 1 to the berth bed through the fastener 9.

[0029] The main lock assembly 6 of the present invention includes a handle 10, a safety shaft 11, a lock box 12, a maintaining torsion spring 13, an unlocking disk 14, a second washer 15, a second retaining ring 16, a limit block 17, a bumper 18, a transition plate 19 and a second fastener 20; the main lock assembly 6 connects the handle 10, the safety shaft 11, the lock box 12, the limit block 17, the unlocking disk 14 and the maintaining torsion spring 13 into one body through the second washer 15 and the second retaining ring 16, and then uses the second fastener 20 to connect the transition plate 19 and the lock box 12 into one body.

[0030] The handle 10, unlocking disk 14 and maintaining torsion spring 13 of the present invention are installed on the lock box through a shaft retaining ring, the safety shaft 11 and the limit block 17 are installed on the lock box through a shaft retaining ring, and the limit block 17 positions and limits the rotation of the unlocking disk 14 through the bumper 18, thereby limiting the handle operation to realize the manual safety function.

[0031] The lock tongue assembly 2 of the present invention includes a flange bearing 21, a compression spring 22, a washer 23 and a lock tongue pull rod 24; the two lock tongue assemblies 2 are connected into one by a rotating assembly 3, and then fastened to the profile plate using a fastener 28. After assembly, the protrusion of the unlocking disk 14 in the main lock assembly 6 contacts one end of the transmission bracket 5, and the other end contacts the shift block welding part 29 in the rotating assembly 3.

[0032] The washer 3 23 in the lock tongue assembly 2 of the present invention is inserted from the front end of the lock tongue pull rod 24 to the flattened part, and then the torsion spring and the flange bearing 1 21 are inserted, and the flange bearing 1 21 is installed in the lock tongue seat 36, and the flange bearing 1 21 is against the front end of the compression spring 22, and the flange end face is against the lock tongue seat 36. When unlocking, the unlocking disk 14 pushes the transmission bracket 5 to rotate, and the transmission bracket 5 then moves the shift block. The rotation of the shift block drives the lock tongue to extend to both ends, compresses the compression spring 22 and pushes the lock gear lock buckle to disengage from the lock tongue seat 36, realizing the manual unlocking function, and then the lock tongue is retracted by relying on the compression spring 22 to reset.

[0033] The rotating assembly 3 of the present invention includes a fastener three 25, a pressure plate 26, a flange bearing two 27, a fastener four 28, a shift block welding piece 29 and a mounting plate 30; the rotating assembly 3 is installed into an integrated structure through the fastener, the guide sleeve, the pressure plate 26, and the flange bearing two 27, and the shift block welding piece 29 can rotate around the guide column of the mounting plate 30.

[0034] The lock assembly 4 of the present invention includes a limit support 31, a sleeve 32, a lock torsion spring 33, a lock buckle 34, a lock pin 35 and a lock tongue seat 36; the lock assembly 4 is installed on the vehicle body by fastening screws, and the lock hook and the lock cooperate to achieve locking and unlocking.

[0035] When unlocking: use the square key to operate the safety shaft 11 to rotate clockwise to release the safety. At this time, the limit block 17 is free from the constraint on the unlocking disk 14. Hold the handle 10 and press the handle clockwise until it is unlocked. In this process, the handle 10 drives the unlocking disk 14 to rotate, and the boss of the unlocking disk 14 moves one end of the transmission bracket 5, the rotating component 3 moves with the transmission bracket 5, and the rotating component 3 drives the lock tongue component 2 to move. The two lock tongue components 2 move relative to each other, and the front end of the lock tongue presses the lock buckle 34 until the lock tongue is out of the lock gear to complete the unlocking.

[0036] When locked: Since the torsion spring 13 and the compression spring 22 are both stressed when unlocked, after the handle 10 is released, the spring force is released, driving the lock tongue pull rod 24 and the handle 10 to automatically reset until the lock tongue overlaps the lock gear, completing the automatic locking and realizing the automatic locking function;

[0037] When the insurance is on: use the square key to operate the insurance shaft 11 to rotate counterclockwise until the bead 18 and the limit block 17 are locked, and the insurance is completed.

[0038] The present invention adopts the self-reset function of the cam, the shift block and the torsion spring, and mechanically cooperates to realize the manual unlocking and automatic locking of the berth lifting bed lock when the berth is fully opened and fully closed; the modular design structure is simple, and meets the requirements of the internal product integration and human-machine interface of the berth bed lock.

Claims

1. A lock for a sleeper bed in a rail transit vehicle, characterized in that: The invention comprises a swing arm lock (1), a lock tongue assembly (2), a rotating assembly (3), a lock gear assembly (4) and a lock tongue seat (36); the swing arm lock (1) and the rotating assembly (3) are mounted in the middle of a berth bed through fasteners; a transmission bracket (5) of the swing arm lock (1) contacts and transmits with a shift block welding piece (29) of the rotating assembly (3); the lock tongue assembly (2) is connected with the shift block welding piece (29) of the rotating assembly (3) and extends to the lock tongue seat (36) along the length direction of the berth bed board; the lock gear assembly (4) is mounted on the carriage body, and a lock buckle (34) is opened by a torsion spring force to abut against the lock tongue seat (36) to achieve automatic locking when the berth is in place.

2. The rail transit vehicle berth lock according to claim 1, characterized in that: The swing arm lock (1) comprises a transmission bracket (5), a main lock assembly (6), a retaining ring (7), a washer (8) and a fastener (9); the swing arm lock (1) connects the transmission bracket (5) and the main lock assembly (6) into one piece through the retaining ring (7) and the washer (8), and assembles the swing arm lock (1) onto the berth bed through the fastener (9).

3. The rail transit vehicle berth lock according to claim 1, characterized in that: The main lock assembly (6) comprises a handle (10), a safety shaft (11), a lock box (12), a retaining torsion spring (13), an unlocking disk (14), a second washer (15), a second retaining ring (16), a limit block (17), a bumper (18), a transition plate (19) and a second fastener (20); the main lock assembly (6) connects the handle (10), the safety shaft (11), the lock box (12), the limit block (17), the unlocking disk (14) and the retaining torsion spring (13) into one piece by means of the second washer (15) and the second retaining ring (16), and then connects the transition plate (19) and the lock box (12) into one piece by means of the second fastener (20).

4. The rail transit vehicle berth lock according to claim 3, characterized in that: The handle (10), the unlocking disk (14), and the maintaining torsion spring (13) are installed on the lock box through a shaft retaining ring, the safety shaft (11) and the limit block (17) are installed on the lock box through a shaft retaining ring, and the limit block (17) is positioned by a bumper (18) to limit the rotation of the unlocking disk (14), thereby limiting the operation of the handle to realize the manual safety function.

5. The rail transit vehicle berth lock according to claim 1, characterized in that: The lock tongue assembly (2) comprises a flange bearing 1 (21), a compression spring (22), a washer 3 (23) and a lock tongue pull rod (24); the two lock tongue assemblies (2) are connected together through a rotating assembly (3), and then fastened to the profile plate using a fastener 4 (28); after assembly, the protrusion of the unlocking disk (14) in the main lock assembly (6) contacts one end of the transmission bracket (5), and the other end contacts the shift block welding piece (29) in the rotating assembly (3).

6. The rail transit vehicle berth lock according to claim 5, characterized in that: The washer three (23) in the lock tongue assembly (2) is inserted from the front end of the lock tongue pull rod (24) to the flattened part, and then the torsion spring and the flange bearing one (21) are inserted. The flange bearing one (21) is installed in the lock tongue seat (36). The flange bearing one (21) abuts against the front end of the compression spring (22), and the flange end face abuts against the lock tongue seat (36). When unlocking, the unlocking disk (14) pushes the transmission bracket (5) to rotate, and the transmission bracket (5) then moves the shift block. The rotation of the shift block drives the lock tongue to extend to both ends, compresses the compression spring (22) and pushes the lock gear lock buckle away from the lock tongue seat (36), realizing the manual unlocking function, and then the lock tongue is retracted by relying on the compression spring (22) to reset.

7. The rail transit vehicle berth lock according to claim 1, characterized in that: The rotating assembly (3) comprises a third fastener (25), a pressure plate (26), a second flange bearing (27), a fourth fastener (28), a shift block welding piece (29) and a mounting plate (30); the rotating assembly (3) is assembled into an integral structure through the fastener, the guide sleeve, the pressure plate (26) and the second flange bearing (27), and the shift block welding piece (29) can rotate around the guide column of the mounting plate (30).

8. The rail transit vehicle berth lock according to claim 1, characterized in that: The lock gear assembly (4) comprises a limit support (31), a shaft sleeve (32), a lock gear torsion spring (33), a lock buckle (34), a lock gear pin shaft (35) and a lock tongue seat (36); the lock gear assembly (4) is installed on the vehicle body by fastening screws, and the lock hook and the lock gear cooperate to achieve locking and unlocking.

9. The rail transit vehicle berth lock according to claim 1, characterized in that: When unlocking: use the square key to operate the safety shaft (11) to rotate clockwise to release the safety. At this time, the limit block (17) is freed from the constraint on the unlocking disk (14). Hold the handle (10) and press the handle clockwise until unlocking. In this process, the handle (10) drives the unlocking disk (14) to rotate, and the boss of the unlocking disk (14) moves one end of the transmission bracket (5). The rotating component (3) moves with the transmission bracket (5), and the rotating component (3) drives the lock tongue component (2) to move. The two lock tongue components (2) move relative to each other, and the front end of the lock tongue presses against the lock buckle (34) until the lock tongue is out of the lock gear, and unlocking is completed.

10. The rail transit vehicle berth lock according to claim 1, characterized in that: When locked: since the torsion spring (13) and the compression spring (22) are both stressed when unlocked, after the handle (10) is released, the spring force is released, driving the lock tongue pull rod (24) and the handle (10) to automatically reset until the lock tongue and the lock gear overlap, completing automatic locking and realizing the automatic locking function; When the safety is engaged: use the square key to operate the safety shaft (11) and rotate it counterclockwise until the bead (18) and the stop block (17) are locked together, thus completing the safety.

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