A quick release personnel safety harness connection for a ship evacuation system

Abstract

The utility model discloses a kind of personnel safety belt connecting structure of quick release type of ship evacuation system, it is related to safety belt technical field.The utility model includes two connecting belts, two connecting belts cross each other, and the one end of two connecting belts is equipped with chest band, and the front end edge of two chest bands and two underarm bands is equipped with first plug-in board and second plug-in board, and between two chest bands and two underarm bands, limit cylinder is set, and the inside of limit cylinder is equipped with baffle, and the inside of limit cylinder and baffle is slidably matched with emergency pressing column.The utility model is matched with double sets of L-shaped card column board through emergency pressing column, can be in emergency one-key release chest band, underarm band locking, compared with the multi-step release mode of traditional safety belt, greatly shorten evacuation preparation time, gain valuable escape time for personnel in ship emergency evacuation, reduce the dangerous risk caused by slow release.

Description

Technical Field

[0001] This utility model belongs to the field of seat belts, specifically, it relates to a quick-release personnel seat belt connection structure for a ship evacuation system. Background Technology

[0002] When ships are sailing at sea, they may face various dangerous situations, such as fire, collision, and grounding, requiring the rapid and safe evacuation of personnel. As a key component to ensure the safety of personnel during evacuation, the performance of the seat belt connection structure is directly related to the safety of personnel's lives.

[0003] Traditional seat belts have a cumbersome structural design (such as multi-step locking and the need for two-hand operation), which may delay evacuation due to operational errors or excessive time consumption during emergency evacuation (when people are panicked or the ship is tilting).

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a quick-release personnel safety belt connection structure for a ship evacuation system.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A quick-release personnel seatbelt connection structure for a ship evacuation system includes two connecting straps that intersect each other. Each connecting strap has a chest strap at one end and two underarm straps at their intersection. Each connecting strap also has a waist belt on one side, with a connecting assembly between the two waist belts. Each connecting strap has a leg strap at the other end. A first insertion plate and a second insertion plate are installed at the front edges of the chest straps and underarm straps. A limiting cylinder is provided between the chest straps and underarm straps, with a partition inside the limiting cylinder. An emergency pressing post slides between the limiting cylinder and the partition. One side of the inner wall of the limiting cylinder... A first reset part is provided between the emergency pressing columns. Two first L-shaped locking plates are installed on the outside of the emergency pressing columns. A limit part is opened on one side of the first L-shaped locking plate. The first L-shaped locking plate cooperates with the first plug-in plate. Two pressure rods are slidably fitted inside the limit cylinder. One end of the pressure rod extends to the outside of the limit cylinder. A second reset part is provided between the other end of the pressure rod and the partition. A second L-shaped locking plate is installed on the outside of the pressure rod. The second L-shaped locking plate cooperates with the second plug-in plate. A limit plate is installed on the outside of the emergency pressing column. The limit plate is sleeved on the pressure rod and located above the second L-shaped locking plate. A protective component is provided on one side of the limit cylinder.

[0007] Optionally, two first slots are provided on one side of the inner wall of the limiting cylinder, and the first insertion plate is slidably engaged in the first slot. Two second slots are provided on one side of the inner wall of the limiting cylinder, and the second insertion plate is slidably engaged in the second slot. The second slot is located in front of the first slot. A first limiting groove is provided on one side of the first insertion plate, and the first L-shaped locking plate is engaged with the first limiting groove. A second limiting groove is provided on one side of the second insertion plate, and the second L-shaped locking plate is engaged with the second limiting groove.

[0008] Optionally, the first reset part includes a first groove formed on one side of the inner wall of the limiting cylinder, a first spring is installed between one end of the emergency pressing column and one side of the inner wall of the first groove, and the other end of the emergency pressing column passes through the partition and the other side of the inner wall of the limiting cylinder and extends to the outside.

[0009] Optionally, the limiting part includes a guide groove formed on one side of the first L-shaped retaining plate, and a limiting post is installed on one side of the inner wall of the limiting cylinder, with the limiting post slidingly fitted in the guide groove.

[0010] Optionally, the second reset part includes a second groove formed on one side of the partition, a pressure rod slidingly fitted in the second groove, a second spring installed between one side of the inner wall of the second groove and one end of the pressure rod, and the other end of the pressure rod passing through one side of the inner wall of the limiting cylinder and extending to the outside.

[0011] Optionally, the protective assembly includes a protective shell that is rotatably fitted on one side of the limiting cylinder. The protective shell is fitted onto the emergency pressing column. Two fixing brackets are installed on the outer side of the protective shell. An annular frame is installed on one side of the limiting cylinder. The fixing brackets slide and rotatably fit within the annular frame. Two placement slots are opened on one side of the inner wall of the annular frame. The fixing brackets slide within the placement slots.

[0012] Optionally, a third groove is provided on one side of the fixing frame, a top block is slidably fitted inside the third groove, and a third spring is installed between the top block and one side of the inner wall of the third groove.

[0013] Optionally, the connecting assembly includes a connecting frame installed at the front edge of one of the belts, and a third plug plate installed at the front edge of the other belt. A sliding groove is provided on one side of the inner wall of the connecting frame, and the third plug plate is slidably fitted in the sliding groove. A through hole is provided on one side of the third plug plate.

[0014] Optionally, a fourth groove is provided on one side of the inner wall of the connecting frame. A T-shaped tie rod is slidably fitted in the fourth groove. The T-shaped tie rod passes through one side of the inner wall of the connecting frame and extends to the outside. A fourth spring is installed between one end of the T-shaped tie rod and one side of the inner wall of the fourth groove. A third L-shaped locking plate is installed on the outside of the T-shaped tie rod. The third L-shaped locking plate is engaged with the through hole.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: By combining the emergency press button with the double L-shaped locking plate, the chest strap and underarm straps can be released with a single button in an emergency. Compared with the multi-step release method of traditional seat belts, this significantly shortens the evacuation preparation time, buys valuable escape time for personnel during emergency evacuation of the ship, and reduces the danger caused by slow release. Emergency release only requires pressing the emergency press button to trigger double unlocking, without complicated operation. Even in a panicked and tense emergency, the release action can be completed quickly, reducing delays caused by operational errors. In addition, the setting of the pressure bar allows for convenient locking adjustment when wearing the seat belt in the normal state, taking into account the convenience of daily use.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 A structural diagram of the quick-release personnel seat belt connection structure provided in this application; Figure 2 A schematic diagram of the connection component structure for the quick-release personnel seat belt connection structure provided in this application; Figure 3 A top view of the quick-release personnel seat belt connection structure provided in this application; Figure 4 A cross-sectional structural schematic diagram of the limiting cylinder for the quick-release personnel seat belt connection structure provided in this application; Figure 5 A schematic diagram of the internal structure of the limiting cylinder for the quick-release personnel seat belt connection structure provided in this application; Figure 6 A side view of the limiting cylinder structure of the quick-release personnel seat belt connection structure provided in this application; Figure 7 A schematic diagram of the protective component structure for the quick-release personnel seat belt connection structure provided in this application; The attached diagram lists the components represented by each number as follows: 1. Connecting strap; 2. Chest strap; 3. Underarm strap; 4. Waist belt; 5. Leg strap; 6. Connecting frame; 7. First insertion plate; 8. First limiting groove; 9. Second insertion plate; 10. Second limiting groove; 11. Third insertion plate; 12. Through hole; 13. Limiting cylinder; 14. First slot; 15. Second slot; 16. Fixing bracket; 17. Partition plate; 18. Circular frame; 19. Emergency pressing post; 20. Pressure rod; 21. First spring 21. Spring; 22. First L-shaped retaining plate; 23. First groove; 24. Guide groove; 25. Limiting post; 26. Limiting plate; 27. Second L-shaped retaining plate; 28. Second spring; 29. ​​Third L-shaped retaining plate; 30. Fourth spring; 31. Protective shell; 32. Placement groove; 33. Second groove; 34. Third groove; 35. Fourth groove; 36. Top block; 37. Third spring; 38. T-shaped pull rod; 39. Sliding groove.

[0018] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Please see Figure 1-7As shown, this embodiment provides a quick-release personnel seat belt connection structure for a ship evacuation system, including two connecting straps 1 that intersect each other. Each connecting strap 1 has a chest strap 2 at one end and two underarm straps 3 at their intersection. Each connecting strap 1 has a waist belt 4 on one side, with a connecting assembly between the two waist belts 4. Each connecting strap 1 has a leg strap 5 at its other end. A first insertion plate 7 and a second insertion plate 9 are installed at the front edges of the two chest straps 2 and the two underarm straps 3. A limiting cylinder 13 is provided between the two chest straps 2 and the two underarm straps 3. A partition 17 is installed inside the limiting cylinder 13, and an emergency pressing post 19 slides between the limiting cylinder 13 and the partition 17. One side of the inner wall of the limiting cylinder 13 is connected to... A first reset part is provided between the emergency pressing columns 19. Two first L-shaped locking plates 22 are installed on the outside of the emergency pressing columns 19. A limit part is opened on one side of the first L-shaped locking plate 22. The first L-shaped locking plate 22 cooperates with the first plug plate 7. Two pressure rods 20 are slidably fitted inside the limit cylinder 13. One end of the pressure rod 20 extends to the outside of the limit cylinder 13. A second reset part is provided between the other end of the pressure rod 20 and the partition plate 17. A second L-shaped locking plate 27 is installed on the outside of the pressure rod 20. The second L-shaped locking plate 27 cooperates with the second plug plate 9. A limit plate 26 is installed on the outside of the emergency pressing column 19. The limit plate 26 is sleeved on the pressure rod 20 and located above the second L-shaped locking plate 27. A protective component is provided on one side of the limit cylinder 13.

[0021] One application of this embodiment is as follows: When worn by a person, the chest strap 2, underarm straps 3, waist belt 4, and leg straps 5 work together to form multi-part restraint on the chest, armpits, waist, and legs, ensuring that the person is closely fitted to the safety belt during ship evacuation and preventing it from falling off. The chest strap 2 and underarm straps 3 are securely connected by the cooperation of the first L-shaped locking plate 22 and the first insertion plate 7, and the second L-shaped locking plate 27 and the second insertion plate 9, ensuring the safety belt is stably worn on the person. In case of emergency release, pressing the emergency pressing post 19 causes it to slide within the limiting cylinder 13, compressing the first reset part. The emergency pressing post 19 then drives the first L-shaped locking plate... 22 moves to separate it from the first plug plate 7. At the same time, the limiting plate 26 on the emergency pressing column 19 pushes the pressure rod 20 downward through the cooperation of the second L-shaped locking plate 27. At the same time, the second reset part retracts, so that the second L-shaped locking plate 27 also separates from the second plug plate 9, thereby realizing the rapid release of the chest strap 2 and the underarm strap 3. The person can quickly remove the seat belt. After releasing the emergency pressing column 19, the first reset part and the second reset part will respectively reset the emergency pressing column 19 and the pressure rod 20 for the next use. The protective component on the side of the limiting cylinder 13 prevents the emergency pressing column 19 from being accidentally touched and causing a false lock, thereby realizing and quickly removing the seat belt.

[0022] In this embodiment, the inner wall of the limiting cylinder 13 has two first slots 14, and the first plug plate 7 is slidably fitted in the first slots 14. The inner wall of the limiting cylinder 13 has two second slots 15, and the second plug plate 9 is slidably fitted in the second slots 15. The second slots 15 are located in front of the first slots 14. The first plug plate 7 has a first limiting groove 8 on one side, and the first L-shaped locking plate 22 is engaged with the first limiting groove 8. The second plug plate 9 has a second limiting groove 10 on one side, and the second L-shaped locking plate 27 is engaged with the second limiting groove 10.

[0023] After the first insert plate 7 is inserted into the first slot 14, the first limiting groove 8 on one side will move to the position corresponding to the first L-shaped locking plate 22. The locking head of the first L-shaped locking plate 22 is precisely embedded in the first limiting groove 8, forming a lateral lock, thereby fixing the corresponding connection part of the chest strap 2. After the second insert plate 9 is inserted into the second slot 15, the second limiting groove 10 on one side will move to the position corresponding to the second L-shaped locking plate 27. The locking head of the second L-shaped locking plate 27 is embedded in the second limiting groove 10, forming a lock in another direction, further preventing the underarm strap 3 from accidentally coming off.

[0024] The first reset part of this embodiment includes a first groove 23 formed on one side of the inner wall of the limiting cylinder 13. A first spring 21 is installed between one end of the emergency pressing column 19 and one side of the inner wall of the first groove 23, and the other end of the emergency pressing column 19 passes through the partition 17 and the other side of the inner wall of the limiting cylinder 13 and extends to the outside.

[0025] Under normal conditions, the first spring 21 is in a naturally extended state, applying an outward pushing force to the emergency pressing post 19, so that the first L-shaped locking plate 22 is firmly locked in the first limiting groove 8 of the first plug plate 7, ensuring that the connection of the chest strap 2 is not loose, and the emergency pressing post 19 will not slide on its own due to the support of the spring, avoiding accidental triggering of unlocking.

[0026] The limiting part in this embodiment includes a guide groove 24 formed on one side of the first L-shaped locking plate 22, and a limiting post 25 is installed on one side of the inner wall of the limiting cylinder 13. The limiting post 25 is slidably fitted in the guide groove 24.

[0027] When the limiting post 25 slides in the guide groove 24, the side wall of the guide groove 24 restricts the lateral displacement of the first L-shaped locking post plate 22, ensuring that it can only move along the length direction of the guide groove 24. This avoids misalignment between the first L-shaped locking post plate 22 and the first plug-in plate 7 due to the displacement of the first L-shaped locking post plate 22, thus providing reliability for connection and release.

[0028] The second reset part of this embodiment includes a second groove 33 formed on one side of the partition 17. The pressure rod 20 is slidably fitted in the second groove 33. A second spring 28 is installed between one side of the inner wall of the second groove 33 and one end of the pressure rod 20. The other end of the pressure rod 20 passes through one side of the inner wall of the limiting cylinder 13 and extends to the outside.

[0029] Under normal conditions, the second spring 28 is in a naturally extended state, applying an outward pushing force to the pressure rod 20, so that the second L-shaped locking plate 27 is firmly locked in the second limiting groove 10 of the second plug plate 9, ensuring the stability of the auxiliary connection of the underarm strap 3. The pressure rod 20 maintains its initial position due to the support of the spring, and the second L-shaped locking plate 27 does not shift, avoiding mis-locking. The limiting plate 26 is fitted on the pressure rod 20 with a gap between it and the second L-shaped locking plate 27, without applying pressure, ensuring the spring is in a natural state.

[0030] The protective assembly of this embodiment includes a protective shell 31 rotatably fitted on one side of the limiting cylinder 13. The protective shell 31 is sleeved on the emergency pressing post 19. Two fixing brackets 16 are installed on the outer side of the protective shell 31. An annular frame 18 is installed on one side of the limiting cylinder 13. The fixing brackets 16 slide and rotatably fit within the annular frame 18. Two placement slots 32 are opened on one side of the inner wall of the annular frame 18. The fixing brackets 16 slide within the placement slots 32. A third groove 34 is opened on one side of the fixing brackets 16. A top block 36 slides within the third groove 34. A third spring 37 is installed between the top block 36 and one side of the inner wall of the third groove 34.

[0031] When the emergency pressing post 19 needs to be operated, the protective shell 31 must be pressed first, causing the protective shell 31 to slide along the two fixing brackets 16, overcoming the elastic force of the third spring 37, and causing the top block 36 to retract into the third groove 34. However, while pressing, the protective shell 31 is rotated to rotate the two fixing brackets 16 to the opening of the placement groove 32. Then, the protective shell 31 is released to facilitate its removal from the emergency pressing post 19, so that the operating end of the emergency pressing post 19 is fully exposed. By performing the above reverse operation, the protective shell 31 can be reattached to the emergency pressing post 19 to avoid accidental contact.

[0032] The connecting assembly of this embodiment includes a connecting frame 6 installed at the front edge of one of the waist belts 4, and a third plug plate 11 installed at the front edge of the other waist belt 4. A sliding groove 39 is provided on one side of the inner wall of the connecting frame 6, and the third plug plate 11 is slidably fitted in the sliding groove 39. A through hole 12 is provided on one side of the third plug plate 11. A fourth groove 35 is provided on one side of the inner wall of the connecting frame 6, and a T-shaped pull rod 38 is slidably fitted in the fourth groove 35. The T-shaped pull rod 38 passes through one side of the inner wall of the connecting frame 6 and extends to the outside. A fourth spring 30 is installed between one end of the T-shaped pull rod 38 and one side of the inner wall of the fourth groove 35. A third L-shaped locking plate 29 is installed on the outside of the T-shaped pull rod 38, and the third L-shaped locking plate 29 is engaged with the through hole 12.

[0033] In an emergency, when the waist connection needs to be released, pull the T-shaped lever 38 outward to overcome the elastic force of the fourth spring 30, causing it to slide along the fourth groove 35 to the outside of the connecting frame 6. The T-shaped lever 38 drives the third L-shaped locking plate 29 to move synchronously, causing its locking head to be pulled out of the through hole 12 of the third plug plate 11, thus releasing the lock. At this time, the third plug plate 11 can be freely pulled out along the sliding groove 39, the two waist belts 4 separate, and the waist constraint is released. By reversing the above operations, the third L-shaped locking plate 29 can be re-locked into the through hole 12. One end of the third L-shaped locking plate 29 is inclined, which facilitates the quick fixation of the third plug plate 11.

[0034] When working, the safety belt's structural design is cumbersome (e.g., multi-step locking, requiring two-hand operation). In emergency evacuation (due to panic or ship tilting), operational errors or excessive time consumption may delay evacuation. In this solution, when emergency release is needed, pressing the emergency pressing column 19 causes it to slide within the limiting cylinder 13, compressing the first reset part. The emergency pressing column 19 drives the first L-shaped locking plate 22 to move, separating it from the first insertion plate 7. Simultaneously, the limiting plate 26 on the emergency pressing column 19 pushes the pressure rod 20 downward through the cooperation of the second L-shaped locking plate 27. At the same time, the second reset part retracts, causing the second L-shaped locking plate 27 to also separate from the second insertion plate 9, thereby achieving rapid release of the chest strap 2 and the underarm strap 3, allowing personnel to quickly remove themselves from the safety belt.

[0035] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A quick-release personnel seatbelt connection structure for a ship evacuation system, characterized in that, include: Two connecting straps (1) intersect each other. One end of each connecting strap (1) is equipped with a chest strap (2). Two underarm straps (3) are installed at the intersection of the two connecting straps (1). One side of each connecting strap (1) is equipped with a waist belt (4). A connecting component is provided between the two waist belts (4). The other end of each connecting strap (1) is equipped with a leg strap (5). The front edges of the two chest straps (2) and the two underarm straps (3) are equipped with a first insertion plate (7) and a second insertion plate (9). A limiting cylinder (13) is provided between the two chest straps (2) and the two underarm straps (3). A partition (17) is installed inside the limiting cylinder (13). An emergency pressing column (19) is slidably fitted inside the limiting cylinder (13) and the partition (17). A first... The reset part has two first L-shaped locking plates (22) installed on the outside of the emergency pressing column (19). A limiting part is opened on one side of the first L-shaped locking plate (22). The first L-shaped locking plate (22) cooperates with the first plug plate (7). The limiting cylinder (13) has two pressure rods (20) slidingly fitted inside. One end of the pressure rod (20) extends to the outside of the limiting cylinder (13). The other end of the pressure rod (20) is provided with a second reset part between it and the partition plate (17). A second L-shaped locking plate (27) is installed on the outside of the pressure rod (20). The second L-shaped locking plate (27) cooperates with the second plug plate (9). A limiting plate (26) is installed on the outside of the emergency pressing column (19). The limiting plate (26) is sleeved on the pressure rod (20) and located above the second L-shaped locking plate (27). A protective component is provided on one side of the limiting cylinder (13).

2. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, Two first slots (14) are opened on one side of the inner wall of the limiting cylinder (13). The first plug plate (7) is slidably fitted in the first slot (14). Two second slots (15) are opened on one side of the inner wall of the limiting cylinder (13). The second plug plate (9) is slidably fitted in the second slot (15), and the second slot (15) is located in front of the first slot (14). A first limiting groove (8) is opened on one side of the first plug plate (7). The first L-shaped locking plate (22) is engaged with the first limiting groove (8). A second limiting groove (10) is opened on one side of the second plug plate (9). The second L-shaped locking plate (27) is engaged with the second limiting groove (10).

3. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, The first reset part includes a first groove (23) formed on one side of the inner wall of the limiting cylinder (13), a first spring (21) is installed between one end of the emergency pressing column (19) and one side of the inner wall of the first groove (23), and the other end of the emergency pressing column (19) passes through the partition (17) and the other side of the inner wall of the limiting cylinder (13) and extends to the outside.

4. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, The limiting part includes a guide groove (24) opened on one side of the first L-shaped card plate (22), and a limiting post (25) is installed on one side of the inner wall of the limiting cylinder (13). The limiting post (25) is slidably fitted in the guide groove (24).

5. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, The second reset part includes a second groove (33) opened on one side of the partition (17), and a pressure rod (20) is slidably fitted in the second groove (33). A second spring (28) is installed between one side of the inner wall of the second groove (33) and one end of the pressure rod (20), and the other end of the pressure rod (20) passes through one side of the inner wall of the limiting cylinder (13) and extends to the outside.

6. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, The protective assembly includes a protective shell (31) that is rotatably fitted on one side of the limiting cylinder (13). The protective shell (31) is fitted onto the emergency pressing column (19). Two fixing brackets (16) are installed on the outer side of the protective shell (31). An annular frame (18) is installed on one side of the limiting cylinder (13). The fixing brackets (16) slide and rotatably fit within the annular frame (18). Two placement slots (32) are opened on one side of the inner wall of the annular frame (18). The fixing brackets (16) slide within the placement slots (32).

7. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 6, characterized in that, A third groove (34) is provided on one side of the fixing frame (16), and a top block (36) is slidably fitted inside the third groove (34). A third spring (37) is installed between the top block (36) and one side of the inner wall of the third groove (34).

8. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 1, characterized in that, The connecting assembly includes a connecting frame (6) installed at the front edge of one of the belts (4), and a third plug plate (11) installed at the front edge of the other belt (4). A sliding groove (39) is provided on one side of the inner wall of the connecting frame (6), and the third plug plate (11) is slidably fitted in the sliding groove (39). A through hole (12) is provided on one side of the third plug plate (11).

9. The quick-release personnel seat belt connection structure for a ship evacuation system according to claim 8, characterized in that, A fourth groove (35) is provided on one side of the inner wall of the connecting frame (6). A T-shaped pull rod (38) is slidably fitted in the fourth groove (35). The T-shaped pull rod (38) passes through one side of the inner wall of the connecting frame (6) and extends to the outside. A fourth spring (30) is installed between one end of the T-shaped pull rod (38) and one side of the inner wall of the fourth groove (35). A third L-shaped locking plate (29) is installed on the outside of the T-shaped pull rod (38). The third L-shaped locking plate (29) is engaged with the through hole (12).

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