A quick-release safety buckle with an insurance structure

Abstract

The invention discloses a quick-release safety buckle with a safety structure, which belongs to the field of underwater towing bodies. A quick-release safety buckle with a safety structure comprises a main safety buckle, a secondary safety buckle, a connecting buckle, a limiting part and a safety part; the main safety buckle is set in a U shape, the two ends of the U shape of the main safety buckle are gathered inward, the connecting buckle is set in a T shape, the side of the connecting buckle away from the horizontal end of the T shape is fixedly connected to the secondary safety buckle, the U-shaped inwardly gathered end of the main safety buckle is matched and connected with the T-shaped horizontal end of the connecting buckle, and a binding space is set on the secondary safety buckle, which limits the movement between the main safety buckle and the secondary safety buckle by setting a limiting part, because when towing an object, the object gives the secondary safety buckle a force away from the main safety buckle, so that it always remains stable during use.

Description

Technical Field

[0001] The present invention relates to the field of underwater towed bodies, and more particularly to a quick-release safety buckle with an insurance structure. Background Art

[0002] During the retraction and deployment of underwater towed bodies (including line arrays, underwater unmanned vehicles, etc.), it is often necessary to disconnect and reconnect safety ropes or towing ropes. This disconnection and connection operation generally needs to be completed manually, and a device with a small volume, convenient disconnection and connection, and high safety factor is generally used as the hanging structure member. At the same time, due to being used in seawater, this structure member needs to have corrosion resistance.

[0003] In the past, nut safety buckles or spring safety buckles were generally used as the hanging structure members. However, this type of safety buckle is unidirectionally loaded under tensile stress. When the tensile stress exceeds the yield strength of the material, plastic deformation is likely to occur, which will cause the threads and spring buckles to lock and be difficult to disassemble. Larger material sizes are often required to meet the safety usage requirements, and the excessive volume and weight will cause inconvenience in use. Summary of the Invention

[0004] The purpose of the present invention is to provide a quick-release safety buckle with an insurance structure to solve the problems in the above background art that the generally used nut safety buckles or spring safety buckles are unidirectionally loaded under tensile stress, plastic deformation is likely to occur when the tensile stress exceeds the yield strength of the material, which will cause the threads and spring buckles to lock and be difficult to disassemble, and larger material sizes are often required to meet the safety usage requirements, and the excessive volume and weight will cause inconvenience in use.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A quick-release safety buckle with an insurance structure, comprising a main safety buckle, a secondary safety buckle, a connecting buckle, a limiting part, and an insurance part; the main safety buckle is U-shaped, the two U-shaped ends of the main safety buckle converge inward, the connecting buckle is T-shaped, one side of the connecting buckle away from the horizontal end of the T-shape is fixedly connected to the secondary safety buckle, the inwardly converging end of the U-shape of the main safety buckle is in mating connection with the horizontal end of the T-shape of the connecting buckle, and a bundling space is provided on the secondary safety buckle; the limiting part is arranged on the inwardly converging end of the U-shape of the main safety buckle and the horizontal end of the T-shape of the connecting buckle, and the limiting part is used to limit the relative rotation after the main safety buckle and the connecting buckle are in mating connection; the insurance part is arranged between the main safety buckle and the connecting buckle, and the insurance part restricts the main safety buckle and the connecting buckle from approaching each other by means of elastic abutment or rigid abutment.

[0006] Preferably, the limiting part includes a rectangular groove and a limiting key. The rectangular groove is arranged at the inwardly converging end of the U-shape of the main safety buckle, the rectangular groove extends along the opening direction of the U-shape of the main safety buckle, the limiting key is fixed on the vertical end of the T-shape of the connecting buckle, and the rectangular groove and the limiting key are in sliding fit connection.

[0007] Preferably, the insurance part restricts the main safety buckle and the connection buckle from approaching each other by means of elastic abutment. A pair of limiting circular grooves are provided on the U-shaped opening side of the main safety buckle. The pair of limiting circular grooves are respectively located at both ends of the main safety buckle. The opening direction of the limiting circular groove is the same as the U-shaped opening direction of the main safety buckle. The elastic force provided after the deformation of the insurance part makes it impossible for the main safety buckle and the secondary safety buckle to approach each other easily, so that the limiting key is always connected with the rectangular groove in a matching manner, thereby improving the stability after the cooperation of the main safety buckle and the secondary safety buckle.

[0008] Preferably, the insurance part includes a screw and an elastic flap. One end of the elastic flap is inserted into the secondary safety buckle, and the screw fixedly connects the end of the elastic flap inserted into the secondary safety buckle with the secondary safety buckle. The end of the elastic flap away from the secondary safety buckle can be inserted into the limiting circular groove to abut against the main safety buckle. After the main safety buckle and the connection buckle are matched, the limiting circular groove restricts the movement of the elastic flap.

[0009] Preferably, the insurance part includes a polyurethane elastic column. One end of the polyurethane elastic column is inserted into the limiting circular groove to abut against the main safety buckle, and the other end of the polyurethane elastic column abuts against the secondary safety buckle. After the main safety buckle and the connection buckle are matched, the limiting circular groove restricts the movement of the polyurethane elastic column. By using the elastic effect of the polyurethane elastic column, opposite acting forces are applied to the main safety buckle and the secondary safety buckle to improve their stability.

[0010] Preferably, the insurance part includes a spring. One end of the spring is inserted into the limiting circular groove to abut against the main safety buckle, and the other end of the spring abuts against the secondary safety buckle. After the main safety buckle and the connection buckle are matched, the limiting circular groove restricts the movement of the spring. Using a spring instead of the polyurethane elastic column can also play an insurance role, meeting the replaceability of the insurance part.

[0011] Preferably, the insurance part restricts the main safety buckle and the connection buckle from approaching each other by means of rigid abutment. Through a hard connection method, the insurance part makes it impossible for the main safety buckle and the secondary safety buckle to approach each other through its own rigidity, so as to achieve the purpose of the limiting key being constantly connected with the rectangular groove, and at the same time make the main safety buckle and the secondary safety buckle constantly cooperate.

[0012] Preferably, the insurance part includes a plug pin and a pin hole; the pin hole is arranged at the T-shaped vertical end of the connection buckle, and the extending direction of the pin hole is the same as the extending direction of the T-shaped horizontal end of the connection buckle. The plug pin is directly inserted into the pin hole, and the outer side surface of the plug pin directly abuts against the main safety buckle and the secondary safety buckle respectively. The plug pin restricts the main safety buckle and the secondary safety buckle from approaching each other.

[0013] Preferably, the radial cross-section of the plug pin and the pin hole is circular, and a pull ring is arranged at the end of the plug pin away from the pin hole.

[0014] Preferably, the connection part between the bundling space and the plane of the secondary safety buckle is provided with a rounded edge, and the edges on the surfaces of the main safety buckle and the secondary safety buckle are all provided with rounded edges.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By providing a limiting part to restrict the movement between the main safety buckle and the secondary safety buckle, when dragging an object, the object applies a force to the secondary safety buckle to move away from the main safety buckle, so that it always remains stable during use.

[0017] 2. On the basis of the limiting part, an insurance part is added. Through the ways of elastic connection and rigid connection, when the main safety buckle and the secondary safety buckle are not in use, the insurance part structure always applies opposite forces to the main safety buckle and the secondary safety buckle, thereby further ensuring their stability during use and when not in use.

[0018] 3. The main safety buckle, the secondary safety buckle and the insurance part are detachably arranged, so that the entire safety buckle structure can be quickly disassembled and installed, improving the convenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention when using an elastic flap;

[0020] Figure 2 It is a schematic structural diagram of the present invention when using a polyurethane elastic column;

[0021] Figure 3 It is a schematic structural diagram of the present invention when using a spring;

[0022] Figure 4 It is a schematic structural diagram of the present invention when using a bolt.

[0023] In the figure: main safety buckle 10; secondary safety buckle 11; connecting buckle 12; rectangular groove 13; limiting key 14; binding space 15; elastic flap 20; screw 21; polyurethane elastic column 30; limiting circular groove 31; spring 40; bolt 50; bolt hole 51. DETAILED DESCRIPTION OF THE INVENTION

[0024] Please refer to 1-4. The present invention provides a technical solution: a quick-release safety buckle with a safety structure, comprising a main safety buckle 10, a secondary safety buckle 11, a connecting buckle 12, a limiting part and a safety part; the main safety buckle 10 is set in a U shape, and the two ends of the U shape of the main safety buckle 10 are gathered inwardly, and the connecting buckle 12 is set in a T shape, and the side of the connecting buckle 12 away from the horizontal end of the T shape is fixedly connected to the secondary safety buckle 11, and the U-shaped inwardly gathered end of the main safety buckle 10 is matched and connected with the T-shaped horizontal end of the connecting buckle 12, and a binding portion is provided on the secondary safety buckle 11. The binding space 15, the connection between the binding space 15 and the plane of the secondary safety buckle 11 is set with a rounded corner cutting edge, the U-shaped curved end of the binding space 15 and the main safety buckle 10 can be used to bind and fix the traction rope, and the edges of the surfaces of the main safety buckle 10 and the secondary safety buckle 11 are all set with rounded corner cutting edges; the limiting part is set on the U-shaped inwardly gathered end of the main safety buckle 10 and the T-shaped horizontal end of the connecting buckle 12, the limiting part includes a rectangular groove 13 and a limit key 14, the rectangular groove 13 is set at the U-shaped inwardly gathered end of the main safety buckle 10, and the rectangular groove 13 is along the main safety buckle 10 The U-shaped opening direction of the connecting buckle 12 is extended, the limit key 14 is fixed to the T-shaped vertical end of the connecting buckle 12, and the rectangular groove 13 and the limit key 14 are slidably matched. When the limit key 14 is inserted into the rectangular groove 13, the rectangular groove 13 limits all degrees of freedom of the limit key 14 except sliding along the extending direction of the rectangular groove 13. At this time, the connecting buckle 12 and the main safety buckle 10 can only move along the extending direction of the rectangular groove 13. When the main safety buckle 10 and the connecting buckle 12 are tightly matched, the horizontal end of the connecting buckle 12 and the U-shaped inward contraction of the main safety buckle 10 The closed end is tightly abutted against the side away from the auxiliary safety buckle 11, so that the main safety buckle 10 and the connecting buckle 12 cannot move further away from each other; the safety part is arranged between the main safety buckle 10 and the connecting buckle 12, and the safety part limits the main safety buckle 10 and the connecting buckle 12 from approaching each other by elastic abutment or hard abutment; a pair of limiting circular grooves 31 are arranged on the U-shaped opening side of the main safety buckle 10, and the pair of limiting circular grooves 31 are respectively located at the two ends of the main safety buckle 10, and the opening direction of the limiting circular groove 31 is the same as the U-shaped opening direction of the main safety buckle 10.

[0025] Example 1

[0026] Preferably, the safety part restricts the main safety buckle 10 and the connecting buckle 12 from approaching each other by elastic abutment; the safety part includes a screw 21 and an elastic flap 20. One end of the elastic flap 20 is inserted into the secondary safety buckle 11, and the screw 21 fixedly connects the end of the elastic flap 20 inserted into the secondary safety buckle 11 to the secondary safety buckle 11. The end of the elastic flap 20 away from the secondary safety buckle 11 can be inserted into the limiting circular groove 31 to abut against the main safety buckle 10. After the main safety buckle 10 and the connecting buckle 12 are engaged, the limiting circular groove 31 restricts the movement of the elastic flap 20. The screw 21 connects the elastic flap 20 to the secondary safety buckle 11. At this time, when the main safety buckle 10 and the connecting buckle 12 are engaged, the limiting key 14 is inserted into the rectangular groove 13. First, the main safety buckle 10 and the secondary safety buckle 11 need to approach each other. At this time, the elastic flap 20 is bent, and the end of the elastic flap 20 away from the secondary safety buckle 11 abuts against the inside of the limiting circular groove 31, thereby giving the main safety buckle 10 and the secondary safety buckle 11 a force to move away from each other. Since the horizontal end of the connecting buckle 12 abuts against the side of the U-shaped inwardly converging end of the main safety buckle 10 away from the secondary safety buckle 11, at this time, the mutual separation of the connecting buckle 12 and the main safety buckle 10 should be restricted. After the elastic flap 20 deforms, it provides opposite forces for the secondary safety buckle 11 and the main safety buckle 10. At the same time, due to the abutment, the main safety buckle 10 and the connecting buckle 12 cannot move further away from each other, so that the elastic flap 20 is always in a deformed state, constantly exerting opposite-direction forces between the main safety buckle 10 and the secondary safety buckle 11, thereby ensuring the normal engagement state of the limiting key 14 and the rectangular groove 13, and thus ensuring the stability of the main safety buckle 10 and the secondary safety buckle 11 during use.

[0027] Example 2

[0028] Preferably, the safety part restricts the main safety buckle 10 and the connecting buckle 12 from approaching each other by elastic abutment; the safety part includes a polyurethane elastic column 30. One end of the polyurethane elastic column 30 is inserted into the limiting circular groove 31 to abut against the main safety buckle 10, and the other end of the polyurethane elastic column 30 abuts against the secondary safety buckle 11. After the main safety buckle 10 and the connecting buckle 12 are engaged, the limiting circular groove 31 restricts the movement of the polyurethane elastic column 30. The uncompressed length of the polyurethane elastic column 30 should be greater than the length between the main safety buckle 10 and the secondary safety buckle 11 after the main safety buckle 10 and the connecting buckle 12 are tightly engaged. Since the polyurethane elastic column 30 has elasticity, when the main safety buckle 10 and the connecting buckle 12 are engaged and connected, from the relationship when the main safety buckle 10 and the connecting buckle 12 are engaged as described above, at this time, the polyurethane elastic column 30 is still in a compressed state. The two ends of the polyurethane elastic column 30 respectively provide opposite forces for the secondary safety buckle 11 and the main safety buckle 10, thereby ensuring the normal engagement state of the limiting key 14 and the rectangular groove 13, and thus ensuring the stability of the main safety buckle 10 and the secondary safety buckle 11 during use.

[0029] Example 3

[0030] Preferably, the insurance part restricts the main safety buckle 10 and the connecting buckle 12 from approaching each other by means of elastic abutment; the insurance part includes a spring 40. One end of the spring 40 is inserted into the limiting circular groove 31 and abuts against the main safety buckle 10, and the other end of the spring 40 abuts against the secondary safety buckle 11. After the main safety buckle 10 and the connecting buckle 12 are engaged, the limiting circular groove 31 restricts the movement of the spring 40. Replace the polyurethane elastic column 30 with the spring 40, and the normal length of the spring 40 is also greater than the length between the main safety buckle 10 and the secondary safety buckle 11 after the main safety buckle 10 and the connecting buckle 12 are tightly engaged. This is the same as the setting method in Embodiment 2. Through the elastic force after the spring 40 is compressed, opposite acting forces are provided for the main safety buckle 10 and the secondary safety buckle 11, so as to ensure the normal engagement state of the limiting key 14 and the rectangular groove 13, and thus ensure the stability of the main safety buckle 10 and the secondary safety buckle 11 during use.

[0031] Embodiment 4

[0032] Preferably, the insurance part restricts the main safety buckle 10 and the connecting buckle 12 from approaching each other by means of rigid abutment; the insurance part includes a plug pin 50 and a pin hole 51; the pin hole 51 is arranged at the T-shaped vertical end of the connecting buckle 12, and the extending direction of the pin hole 51 is the same as the extending direction of the T-shaped horizontal end of the connecting buckle 12. The plug pin 50 is directly inserted into the pin hole 51, and the outer side surface of the plug pin 50 abuts directly against the main safety buckle 10 and the secondary safety buckle 11 respectively. The plug pin 50 restricts the main safety buckle 10 and the secondary safety buckle 11 from approaching each other; the radial cross-section of the plug pin 50 and the pin hole 51 is circular. A pull ring is arranged at one end of the plug pin 50 away from the pin hole 51. After the main safety buckle 10 and the connecting buckle 12 are tightly engaged in the above-mentioned manner, the pin hole 51 is exactly located between the main safety buckle 10 and the secondary safety buckle 11. Insert the plug pin 50 into the pin hole 51, and the diameter of the plug pin 50 is exactly equal to or slightly smaller than the distance between the main safety buckle 10 and the secondary safety buckle 11. Since the plug pin 50 is made of a rigid material, when the main safety buckle 10 and the secondary safety buckle 11 approach each other, they respectively abut against the plug pin 50, and at this time they cannot approach each other further, ensuring the normal engagement state of the limiting key 14 and the rectangular groove 13, and thus ensuring the stability of the main safety buckle 10 and the secondary safety buckle 11 during use; the pull ring can be used when disassembling the safety buckle, and the operator can pull out the plug pin 50 from the pin hole 51 through the pull ring.

[0033] During installation: Bundle the corresponding towing rope with the U-shaped bent end of the main safety buckle 10 and within the bundling space 15. Then, place the T-shaped horizontal end of the connecting buckle 12 into the inner space of the main safety buckle 10. When placing it, the main safety buckle 10 and the connecting buckle 12 can be perpendicular to each other, making it easier for the connecting buckle 12 to be placed inside the main safety buckle 10. After the connecting buckle 12 enters the inner space of the main safety buckle 10, rotate the connecting buckle 12 to align the limit key 14 with the rectangular groove 13. Then, pull the secondary safety buckle 11 to move the main safety buckle 10 and the connecting buckle 12 away from each other, so that the rectangular groove 13 cooperates with the limit key 14 and the connecting buckle 12 cooperates with the main safety buckle 10. Then, install the parts of the insurance section. One end of the elastic flap 20 away from the secondary safety buckle 11 is pressed into the limit circular groove 31 during use. The polyurethane elastic column 30 and the spring 40 are pressed into the limit circular groove 31 for limiting by using their elastic compressible characteristics during use. When making a rigid abutment, directly insert the bolt 50 into the bolt hole 51.

[0034] The disassembly process is the opposite of the installation process. First, remove the insurance part. Then, move the main safety buckle 10 and the connecting buckle 12 closer to each other so that the limit key 14 can be disengaged from the rectangular groove 13. Then, separate the main safety buckle 10 and the connecting buckle 12.

Claims

1. A quick-release safety buckle with an insurance structure, characterized in that: It includes a main safety buckle (10), a secondary safety buckle (11), a connecting buckle (12), a limiting part and an insurance part; The main safety buckle (10) is U-shaped, the two U-shaped ends of the main safety buckle (10) converge inward, the connecting buckle (12) is T-shaped, one side of the connecting buckle (12) away from the T-shaped horizontal end is fixedly connected to the secondary safety buckle (11), and the inward-converging end of the U-shaped of the main safety buckle (10) is fitted and connected to the T-shaped horizontal end of the connecting buckle (12). A bundling space (15) is provided on the secondary safety buckle (11); The limiting part is arranged on the inward-converging end of the U-shaped of the main safety buckle (10) and the T-shaped horizontal end of the connecting buckle (12). The limiting part is used to limit the relative rotation after the main safety buckle (10) and the connecting buckle (12) are fitted and connected; The insurance part is arranged between the main safety buckle (10) and the connecting buckle (12). The insurance part restricts the main safety buckle (10) and the connecting buckle (12) from approaching each other by elastic abutment or rigid abutment; The limiting part includes a rectangular groove (13) and a limiting key (14). The rectangular groove (13) is arranged on the inward-converging end of the U-shaped of the main safety buckle (10). The rectangular groove (13) extends along the U-shaped opening direction of the main safety buckle (10). The limiting key (14) is fixed on the T-shaped vertical end of the connecting buckle (12). The rectangular groove (13) and the limiting key (14) are in sliding fit connection; The insurance part restricts the main safety buckle (10) and the connecting buckle (12) from approaching each other by elastic abutment. A pair of limiting circular grooves (31) are arranged on the U-shaped opening side of the main safety buckle (10). The pair of limiting circular grooves (31) are respectively located at both ends of the main safety buckle (10). The opening direction of the limiting circular groove (31) is the same as the U-shaped opening direction of the main safety buckle (10).

2. The quick-release safety buckle with an insurance structure according to claim 1, characterized in that: The insurance part includes a screw (21) and an elastic flap (20). One end of the elastic flap (20) is inserted into the secondary safety buckle (11). The screw (21) fixes the end of the elastic flap (20) inserted into the secondary safety buckle (11) to the secondary safety buckle (11). The end of the elastic flap (20) away from the secondary safety buckle (11) can be inserted into the limiting circular groove (31) to abut against the main safety buckle (10). After the main safety buckle (10) and the connecting buckle (12) are fitted, the limiting circular groove (31) restricts the movement of the elastic flap (20).

3. The quick-release safety buckle with an insurance structure according to claim 1, characterized in that: The insurance part includes a polyurethane elastic column (30). One end of the polyurethane elastic column (30) is inserted into the limiting circular groove (31) to abut against the main safety buckle (10). The other end of the polyurethane elastic column (30) abuts against the secondary safety buckle (11). After the main safety buckle (10) and the connecting buckle (12) are fitted, the limiting circular groove (31) restricts the movement of the polyurethane elastic column (30).

4. The quick-release safety buckle with an insurance structure according to claim 1, characterized in that: The insurance part includes a spring (40). One end of the spring (40) is inserted into the limiting circular groove (31) to abut against the main safety buckle (10). The other end of the spring (40) abuts against the secondary safety buckle (11). After the main safety buckle (10) and the connecting buckle (12) are fitted, the limiting circular groove (31) restricts the movement of the spring (40).

5. A quick-release safety buckle with an insurance structure according to claim 1, characterized in that: The insurance part includes a bolt (50) and a pin hole (51); The pin hole (51) is arranged at the T-shaped vertical end of the connecting buckle (12). The extending direction of the pin hole (51) is the same as that of the T-shaped horizontal end of the connecting buckle (12). The plug pin (50) is directly inserted into the pin hole (51). The outer side surfaces of the plug pin (50) are directly abutted against the main safety buckle (10) and the secondary safety buckle (11) respectively. The plug pin (50) restricts the main safety buckle (10) and the secondary safety buckle (11) from approaching each other.

6. The quick-release safety buckle with an insurance structure according to claim 5, characterized in that: The radial cross-sections of the plug pin (50) and the pin hole (51) are circular. A pull ring is arranged at one end of the plug pin (50) away from the pin hole (51).

7. The quick-release safety buckle with an insurance structure according to claim 1, characterized in that: The connection part between the bundling space (15) and the plane of the secondary safety buckle (11) is provided with a rounded cutting edge. The edges on the surfaces of the main safety buckle (10) and the secondary safety buckle (11) are all provided with rounded cutting edges.

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