Pull pin type quick release buckle

Abstract

The utility model relates to a technical field of unhooking, specifically is a pull pin formula quick detachable buckle, including the buckle body, the hole of the buckle body both ends is equipped with the hole that the pin passes, the pin is slidably passed in the hole of buckle body, and at least two grooves for cooperation locking are equipped on the pin, the index pin is equipped on the buckle body, the index pin is equipped with groove three, and the index pin with the groove on the pin adapts to lock the position of pin, the index pin spring acts on the index pin, makes the index pin keep with the trend of cooperation groove on the pin, the lock pin spring acts on the pin, provides the sliding reset force for the pin, the utility model pull pin formula quick detachable buckle, need not external tool to realize the quick plug -in and locking of pin shaft, single time dismounting time is shortened more than 51% compared with ordinary unhooking, especially suitable for frequently dismounting or emergency operation scene, significantly improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shackle technology, specifically a pull-pin type quick-release buckle. Background Technology

[0002] Bow shackles, as load-bearing connecting components, are widely used in lifting and transportation, engineering hoisting, ship anchor chains, and outdoor equipment securing. They are primarily used to quickly connect and disconnect load-bearing components such as ropes, chains, and lifting gear. A typical bow shackle consists of a bow-shaped body, a pin, and a locking mechanism (such as nuts, cotter pins, and bolts). The connection is achieved by the pin passing through holes at both ends of the bow-shaped body, and the locking mechanism secures the pin to prevent it from falling off during load-bearing. For example, bow shackles are used to connect hooks and slings when lifting heavy objects with cranes; in ship operations, they are used to connect and secure sections of anchor chains; and in outdoor camping, they are used to tighten and secure tent frames and ropes.

[0003] The existing shackles have the following defects:

[0004] 1. Low disassembly and assembly efficiency: The locking structure of ordinary bow-shaped shackles mostly relies on the tightening of nuts and the use of cotter pins for fixation, or the use of bolts for through locking. Disassembly and assembly require the use of tools such as wrenches and pliers. Especially in complex scenarios such as high-altitude hoisting and underwater operations, the inconvenience of carrying and operating tools leads to a long disassembly and assembly time, affecting the work progress.

[0005] 2. Poor ease of operation: When the fit between the pin and the hole of the bow-shaped body is not precise enough, jamming and misalignment are likely to occur, requiring repeated alignment of the hole during disassembly and assembly; and some locking structures (such as cotter pins) are easily damaged after disassembly, requiring frequent replacement, which increases the complexity of operation.

[0006] 3. Potential issues with load-bearing stability and safety: After long-term use or repeated disassembly and assembly, nuts are prone to loosening due to vibration and load-bearing impact. If they are not checked and tightened in time, the pin may fall off, causing safety accidents such as falling heavy objects and equipment damage. At the same time, traditional locking structures are prone to failure under extreme working conditions (such as high temperature and corrosive environment), reducing the load-bearing reliability of the shackle.

[0007] 4. Limited adaptability: The pin length and bow body size of ordinary bow shackles are mostly fixed specifications, making it difficult to adapt to ropes, chains or connecting parts of different diameters or thicknesses. Customization is required for specific scenarios, which increases the cost of use and inventory pressure.

[0008] Therefore, in view of the above situation, there is an urgent need to develop a pull-pin quick-release buckle to overcome the shortcomings in current practical applications. Utility Model Content

[0009] The purpose of this invention is to provide a pull-pin type quick-release buckle to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A pull-pin type quick-release buckle includes a buckle body, the buckle body having holes at both ends for a pin to pass through, the pin being slidably passed through the holes in the buckle body, and the pin having at least two grooves for engaging and locking.

[0012] A dividing pin is provided on the buckle body, and the dividing pin is provided with a groove. The dividing pin is adapted to the groove on the pin to lock the position of the pin.

[0013] The indexing pin spring acts on the indexing pin, causing the indexing pin to maintain a tendency to engage with the groove on the pin;

[0014] The locking spring acts on the pin, providing a sliding return force for the pin.

[0015] As a further embodiment of this utility model: the groove on the pin includes a groove one and a groove two arranged in sequence;

[0016] The first slot is used to engage with the indexing pin in the locked state, and the second slot is used to engage with the indexing pin in the unlocked state;

[0017] The groove three on the indexing pin is used to engage with the pin during the unlocking operation.

[0018] As a further embodiment of this utility model, it also includes a pull ring, which is connected to the indexing pin and is used to pull the indexing pin away from its engagement with the groove on the pin.

[0019] As a further embodiment of this utility model: the locking spring is sleeved on the pin, and one end of the locking spring abuts against the buckle body, and the other end abuts against the pin.

[0020] As a further embodiment of this utility model: the indexing pin spring is sleeved on the outside of the indexing pin, and one end of the indexing pin spring abuts against the buckle body, and the other end abuts against the indexing pin.

[0021] As a further embodiment of this utility model: the second groove is provided with an oblique angle on the side near the first groove, and the oblique angle is used to guide the pin to slide during the locking operation;

[0022] In the locked state, slot three is perpendicular to slot one.

[0023] As a further embodiment of this utility model: the pin has a cylindrical structure, and the pin is fitted with the hole of the buckle body with a clearance fit.

[0024] As a further embodiment of this utility model: the buckle body has an arc-shaped structure, and the holes at both ends of the buckle body are coaxially arranged.

[0025] As a further embodiment of this utility model: the indexing pin is arranged perpendicular to the sliding direction of the pin.

[0026] As a further embodiment of this utility model: the first groove and the second groove are both annular grooves that are recessed radially along the pin, and the third groove is a groove that is recessed radially along the indexing pin.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. Significantly improves disassembly and assembly efficiency: Through the quick-release locking mechanism (such as self-locking pins and spring structures), the pin shaft can be quickly inserted, removed and locked without external tools. The disassembly and assembly time is reduced by more than 51% compared with ordinary shackles. It is especially suitable for frequent disassembly and assembly or emergency operation scenarios, significantly improving work efficiency.

[0029] 2. Significantly improved ease of operation: The guide structure of the pin and the bow-shaped body hole is optimized to reduce jamming and misalignment problems and achieve smooth insertion and removal of the pin; at the same time, a reusable locking component is adopted to avoid frequent replacement of traditional cotter pins and other vulnerable parts, reduce the difficulty of operation, and make it suitable for one-handed operation or use in complex environments.

[0030] 3. Enhanced load-bearing stability and safety: Through self-locking anti-loosening design (such as wedge locking and gear positioning structure), the pin shaft is ensured not to loosen under load vibration and impact conditions, effectively preventing the risk of falling off; key components are made of high-strength wear-resistant materials to improve structural stability in high-temperature and corrosive environments and ensure safety during load-bearing process;

[0031] 4. Improved adaptability and versatility: With adjustable pin length or adaptable hole design at the end of the bow-shaped body, it can be compatible with ropes and chains of different diameters (e.g., 8-30mm) and connecting parts of different thicknesses, reducing the need for custom-made shackles, lowering usage costs and inventory pressure;

[0032] 5. Extend service life: Optimize the stress distribution of the locking structure and pins to reduce component wear caused by repeated disassembly and assembly; use corrosion-resistant and high-strength materials to make key components, improve the weather resistance and fatigue resistance of the shackle, and extend the overall service life. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the pull-pin quick-release buckle of this utility model.

[0034] Figure 2 This is a three-dimensional structural diagram of the pin in this utility model.

[0035] Figure 3 This is a three-dimensional structural diagram of the indexing pin in this utility model.

[0036] Figure 4 This is a three-dimensional structural diagram of the locking pin spring in this utility model.

[0037] Figure 5 This is a three-dimensional structural diagram of the indexing pin spring in this utility model.

[0038] In the diagram: 1-clasp body, 2-pin, 3-indexing pin, 4-indexing pin spring, 5-pull ring, 6-locking pin spring, 7-slot one, 8-slot two, 9-slot three. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0041] Please see Figures 1-5 The present invention provides a pull-pin type quick-release buckle, including a buckle body 1. The buckle body 1 has holes at both ends for pins 2 to pass through. The pins 2 are slidably passed through the holes of the buckle body 1, and the pins 2 are provided with at least two grooves for locking.

[0042] The indexing pin 3 is provided on the buckle body 1. The indexing pin 3 is provided with a groove 9, and the indexing pin 3 is adapted to the groove on the pin 2 to lock the position of the pin 2.

[0043] The indexing pin spring 4 acts on the indexing pin 3, causing the indexing pin 3 to maintain a tendency to engage with the groove on the pin 2;

[0044] The locking spring 6 acts on the pin 2 to provide a sliding return force for the pin 2.

[0045] In one embodiment of this utility model, please refer to Figures 1-5 The groove on the pin 2 includes a first groove 7 and a second groove 8 arranged sequentially;

[0046] The first slot 7 is used to engage with the indexing pin 3 in the locked state, and the second slot 8 is used to engage with the indexing pin 3 in the unlocked state;

[0047] The groove 9 on the indexing pin 3 is used to cooperate with the pin 2 during the unlocking operation.

[0048] It also includes a pull ring 5, which is connected to the indexing pin 3 and is used to pull the indexing pin 3 away from the groove on the pin 2.

[0049] In one embodiment of this utility model, please refer to Figures 1-5 The locking spring 6 is sleeved on the pin 2, and one end of the locking spring 6 abuts against the buckle body 1, and the other end abuts against the pin 2.

[0050] The indexing pin spring 4 is sleeved on the outside of the indexing pin 3, and one end of the indexing pin spring 4 abuts against the buckle body 1, and the other end abuts against the indexing pin 3.

[0051] In one embodiment of this utility model, please refer to Figures 1-5 The second groove 8 has an angled side near the first groove 7, and the angled side is used to guide the pin 2 to slide during the locking operation;

[0052] In the locked state, slot 3 9 is perpendicular to slot 1 7.

[0053] In one embodiment of this utility model, please refer to Figures 1-5 The pin 2 has a cylindrical structure, and the pin 2 is clearance-fitted with the hole of the buckle body 1.

[0054] The buckle body 1 has an arc-shaped structure, and the holes at both ends of the buckle body 1 are coaxially arranged.

[0055] In one embodiment of this utility model, please refer to Figures 1-5 The indexing pin 3 is set perpendicular to the sliding direction of the pin 2.

[0056] The first groove 7 and the second groove 8 are both annular grooves that are radially recessed along the pin 2, and the third groove 9 is a groove that is radially recessed along the indexing pin 3.

[0057] This utility model features a pull-pin quick-release buckle. Pulling the indexing pin 3 will cause the pin 2 to spring open, and pressing the indexing pin 3 back in will automatically lock it in place.

[0058] In the normal locked state, slot 1 7 is stuck by indexing pin 3 and cannot move left or right. When indexing pin 3 is pulled, slot 3 9 moves directly above locking pin 2. Pin 2 automatically loosens to the right under the action of locking pin spring 6 until it is stuck on slot 2 8. Indexing pin 3 rebounds under the action of indexing pin spring 4 and locks slot 2 8 again. In this way, pin 2 will not completely loosen to the right and will remain connected to buckle body 1 and will not be lost.

[0059] When locking is required, push pin 2 to the left by hand. At this time, simply pull the indexing pin 3 gently. The small angle of groove 2 8 will make it easier for pin 2 to slide in until groove 1 7 returns to the position of indexing pin 3. Under the action of indexing pin spring 4, indexing pin 3 quickly rebounds and locks pin 2, thus forming a locked state.

[0060] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pull-pin type quick-release buckle, comprising a buckle body (1), characterized in that: The buckle body (1) has holes at both ends for the pin (2) to pass through. The pin (2) is slidably passed through the holes of the buckle body (1), and the pin (2) has at least two grooves for locking. The indexing pin (3) is provided on the buckle body (1), and the indexing pin (3) is provided with a groove (9), and the indexing pin (3) is adapted to the groove on the pin (2) to lock the position of the pin (2); The indexing pin spring (4) acts on the indexing pin (3) to keep the indexing pin (3) in a groove fit with the pin (2); The locking spring (6) acts on the pin (2) to provide a sliding return force for the pin (2).

2. The pull-pin type quick-release buckle according to claim 1, characterized in that, The groove on the pin (2) includes a groove one (7) and a groove two (8) arranged in sequence; The first slot (7) is used to cooperate with the indexing pin (3) in the locked state, and the second slot (8) is used to cooperate with the indexing pin (3) in the unlocked state; The groove 3 (9) on the indexing pin (3) is used to cooperate with the pin (2) during the unlocking operation.

3. The pull-pin type quick-release buckle according to claim 1, characterized in that, It also includes a pull ring (5), which is connected to the indexing pin (3) and is used to pull the indexing pin (3) away from the groove on the pin (2).

4. The pull-pin type quick-release buckle according to claim 1, characterized in that, The locking spring (6) is sleeved on the pin (2), and one end of the locking spring (6) abuts against the buckle body (1), and the other end abuts against the pin (2).

5. The pull-pin type quick-release buckle according to claim 1, characterized in that, The indexing pin spring (4) is sleeved on the outside of the indexing pin (3), and one end of the indexing pin spring (4) abuts against the buckle body (1), and the other end abuts against the indexing pin (3).

6. The pull-pin type quick-release buckle according to claim 2, characterized in that, The second groove (8) has an angled side near the first groove (7), which is used to guide the pin (2) to slide during the locking operation; In the locked state, the third slot (9) is perpendicular to the first slot (7).

7. The pull-pin type quick-release buckle according to claim 1, characterized in that, The pin (2) has a cylindrical structure, and the pin (2) is fitted with the hole of the buckle body (1) with a clearance.

8. The pull-pin type quick-release buckle according to claim 1, characterized in that, The buckle body (1) has an arc-shaped structure, and the holes at both ends of the buckle body (1) are coaxially arranged.

9. The pull-pin type quick-release buckle according to claim 1, characterized in that, The indexing pin (3) is set perpendicular to the sliding direction of the pin (2).

10. The pull-pin quick-release buckle according to claim 2 or 6, characterized in that, The first groove (7) and the second groove (8) are both annular grooves that are radially recessed along the pin (2), and the third groove (9) is a groove that is radially recessed along the indexing pin (3).

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