Limiting type climbing hook

Abstract

The utility model discloses a limiting climbing hook which comprises a hook body, a movable pin, a stress elastic piece, a torsion spring and a limiting piece. The buckle body is of a U-shaped structure, one side of the buckle body is provided with a notch for installing the movable pin, the movable pin is connected with the buckle body through the stress elastic piece and automatically resets, the limiting strips at the two ends of the torsion spring are inserted into the movable pin and the limiting piece respectively, the top of the limiting piece is provided with a containing through groove and an abutting buckle opening, and the locking or unlocking function is achieved through the sliding buckle groove and the limiting groove. The device can be rapidly operated by one hand, the requirement for frequently taking out or loading the rope is met, meanwhile, safe limiting is ensured, and the use efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rope buckles, and in particular to a limiting carabiner. Background Technology

[0002] In outdoor sports such as mountaineering and rock climbing, securing and connecting cables is a crucial aspect of safety, typically achieved using safety locks. The reliability of these locks directly impacts user safety, especially in high-risk environments. If the lock opening accidentally comes loose or becomes dislodged, the cable may become unstable, potentially leading to serious accidents. Existing technology includes safety locks with locking mechanisms. These locks utilize an internal threaded ring that engages with the lock body, and an L-shaped block limits the movement of the threaded ring, preventing it from shifting during use and thus improving stability. However, these safety locks have significant drawbacks in practical use, primarily in their inconvenience. Opening and closing requires both hands, and the cable can only be inserted or removed after the lock is stable. This fails to meet the need for quick one-handed operation, which is particularly disadvantageous in emergency situations or scenarios requiring frequent cable handling.

[0003] Furthermore, in certain climbing phases, climbers need to frequently remove or insert ropes from the carabiners, placing higher demands on the ease of operation of the carabiners. However, traditional carabiner designs often struggle to balance quick operation with safety. On one hand, scenarios involving frequent rope removal and insertion require minimizing interference from the limiting structure to improve efficiency; on the other hand, as a safety tool, the carabiner must possess a reliable limiting function to prevent accidental loosening. Designing a carabiner that meets the needs of frequent rope removal and insertion while ensuring reliable limiting has become a pressing technical challenge. Therefore, developing a carabiner that allows for quick one-handed operation, features automatic reset, and can flexibly switch limiting states according to the usage scenario is of great significance. Utility Model Content

[0004] The purpose of this invention is to provide a limiting carabiner to overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A locking carabiner includes a body, a movable pin, a stress spring, a torsion spring, and a locking plate. The body is U-shaped and made of high-strength, high-toughness material to withstand external tensile forces, and has a notch on one side for mounting the movable pin. The two ends of the notch engage with the movable pin and the stress spring, respectively, ensuring the stability of the overall structure. Furthermore, one end of the movable pin is rotatably connected to the body, and the other end has a locking groove for engaging with the body to achieve a closing function. A stress spring is embedded inside the movable pin; one end of the stress spring is fixed to the notch in the body, and the other end applies strain pressure to the movable pin, ensuring that the movable pin always remains in contact with the body, thus guaranteeing free opening and closing of the movable pin in the unlocked state.

[0007] Specifically, a stress spring is embedded inside the movable pin and fixedly connected to the buckle body to provide continuous elastic pressure to the movable pin. The design of the stress spring ensures that the movable pin always fits tightly against the buckle body in the unlocked state, preventing accidental loosening due to external force. Furthermore, a torsion spring is sleeved on the movable pin, with limiting strips extending from both ends. One limiting strip is inserted into a pre-drilled hole in the movable pin, and the other is fixedly inserted inside a limiting plate. The elastic action of the torsion spring allows the limiting plate to rotate and move axially to reset, thereby achieving the automatic reset function of the limiting plate.

[0008] Furthermore, the limiting plate is fitted onto the movable pin, with a pair of through grooves and an inwardly recessed snap-fit ​​opening at the top, and connected to the movable pin at the bottom via a torsion spring. The specific functions of the limiting plate are as follows: the through grooves, when the limiting plate is rotated into position, correspond to the two ends of the notch on the buckle body, preventing interference and facilitating the opening, closing, and rotation of the movable pin. The snap-fit ​​opening includes a sliding groove and a limiting groove, used to achieve limiting or unlocking functions in different usage scenarios. When locking the carabiner, the user pulls the limiting plate axially, rotating it until the limiting groove aligns with the hinge shaft. Under the elastic force of the torsion spring, the limiting groove continuously snaps against the hinge shaft, completing the locking. When frequently removing or inserting ropes, the limiting plate is rotated so that the sliding groove aligns with the hinge shaft. Under the elastic force of the torsion spring, the sliding groove continuously snaps against the hinge shaft, completing the limiting in the unlocked state.

[0009] Furthermore, a hinge shaft is provided at the rotatable connection between the movable pin and the buckle body, with one end extending outward to engage with the snap-fit ​​opening of the limiting piece, thereby achieving the positioning function of the limiting piece. The hinge shaft not only provides stable rotational support for the movable pin but also enables limiting functions in different modes through its cooperation with the limiting piece.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] The technical solution of this utility model also considers ease of operation in actual use. In locking mode, the user can lock the carabiner simply by pulling and rotating it axially, without the need for complicated steps or tools. In unlocked mode, the sliding groove design of the limiting piece allows the movable pin to open and close quickly, adapting to the needs of frequent operation. This dual-mode design not only improves operational efficiency but also enhances the adaptability of the carabiner in different usage scenarios.

[0012] Furthermore, the technical solution of this utility model achieves a balance between the convenience and safety of single-handed operation through precise structural design. The automatic reset function of the movable pin reduces the number of operation steps, while the dual-mode switching of the limit plate meets the functional requirements of different usage scenarios. Through the elastic action of the torsion spring and the continuous pressure of the stress spring, the stability of the limit plate and the movable pin in various states is ensured, avoiding safety hazards caused by external forces or misoperation.

[0013] In summary, this utility model, through its ingenious structural design, solves the technical problems of existing carabiners in terms of one-handed operation, rapid opening and closing, and safety limiting. The proposed solution not only achieves a balance between convenience and safety but also enhances overall performance through a compact and reliable structural design, making it highly practical and worthy of widespread application. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the present invention, ignoring the limiting piece;

[0017] Figure 4 This is a structural schematic diagram of the present invention, ignoring the limiting piece and the movable pin.

[0018] Attached image annotations:

[0019] 1. Movable pin; 2. Buckle body; 3. Stress spring; 4. Torsion spring; 5. Buckle groove; 6. Limiting piece; 7. Through groove; 8. Limiting groove; 9. Sliding buckle groove; 10. Buckle opening. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0024] A type of carabiner with a limiting mechanism, the specific implementation of which is described in conjunction with the attached... Figures 1 to 4 Please provide a detailed explanation. Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is a structural diagram from another perspective. Figure 3 The structural diagram is omitted for brevity. Figure 4 The structural diagram omits the limiting piece and the movable pin. These figures, along with the component numbers 1 to 10 marked in the figures, comprehensively illustrate the specific implementation process of this utility model.

[0025] The core structure of this utility model includes a buckle body 2, a movable pin 1, a stress spring 3, a torsion spring 4, and a limiting piece 6. The buckle body 2 has a U-shaped structure, is made of high-strength metal material, and possesses excellent tensile strength and durability. A notch is provided on one side of the buckle body 2 for installing the movable pin 1. One end of the movable pin 1 is rotatably connected to the buckle body 2 via a hinge shaft, and the other end has a fastening groove 5 for achieving a closing function with the buckle body 2. A stress spring 3 is embedded inside the movable pin 1. One end of the stress spring 3 is fixed to the notch in the buckle body 2, and the other end applies continuous pressure to the movable pin 1, ensuring that the movable pin 1 always fits tightly against the buckle body 2 in the unlocked state, preventing accidental loosening due to external force. The design of the stress spring 3 not only enhances the reset capability of the movable pin 1 but also improves the stability of the overall structure.

[0026] A torsion spring 4 is fitted onto the movable pin 1, with limiting strips extending from both ends. One limiting strip is inserted into a pre-drilled hole in the movable pin 1, and the other is fixedly inserted into the limiting piece 6. The elasticity of the torsion spring 4 gives the limiting piece 6 the ability to return to its original rotation and allows it to move axially. The limiting piece 6 is fitted onto the movable pin 1, and its top is provided with a pair of through grooves 7 and an inwardly recessed snap-fit ​​opening 10. The through grooves 7 are designed so that the limiting piece 6, after rotating into position, can correspond to the two ends of the notch in the buckle body 2, avoiding interference and ensuring smooth opening, closing, and rotation of the movable pin 1. The snap-fit ​​opening 10 includes a sliding groove 9 and a limiting groove 8, used to achieve limiting or unlocking functions in different usage scenarios.

[0027] In practice, when locking the carabiner, the operator first pulls the limiting plate 6 along the axis of the movable pin 1, causing the limiting plate 6 to move axially relative to the movable pin 1. Then, the limiting plate 6 is rotated to align the limiting groove 8 with the hinge shaft. At this point, under the elastic force of the torsion spring 4, the limiting groove 8 remains engaged with the hinge shaft, completing the locking function. In this mode, the movable pin 1 cannot rotate relative to the buckle body 2, thus ensuring the carabiner is in a securely locked state and preventing accidental rope detachment. This locking mode is suitable for scenarios requiring prolonged external tension, such as rope securing during rock climbing.

[0028] When frequent rope insertion or removal is required, the operator rotates the limiting plate 6 to align the sliding groove 9 with the hinge shaft. Under the elastic force of the torsion spring 4, the sliding groove 9 continuously abuts against the hinge shaft, completing the limiting function in the unlocked state. In this mode, the movable pin 1 can open and close freely for quick operation. This unlocked mode is suitable for scenarios requiring frequent rope position adjustments, such as rapid rope switching during mountaineering. The cooperation between the sliding groove 9 and the hinge shaft ensures the flexibility of the movable pin 1 while avoiding safety hazards caused by misoperation.

[0029] Furthermore, a hinge shaft is provided at the rotatable connection between the movable pin 1 and the buckle body 2, with one end extending outward to engage with the latching opening 10 of the limiting piece 6, thereby achieving the positioning function of the limiting piece 6. The hinge shaft not only provides stable rotational support for the movable pin 1 but also enables limiting functions in different modes through its engagement with the limiting piece 6. The axial movement and rotational switching of the limiting piece 6 both rely on the precise positioning of the hinge shaft, ensuring operational reliability and safety.

[0030] In practical use, the technical solution of this utility model has demonstrated significant advantages. Taking rock climbing as an example, climbers need to frequently adjust the position of the rope during the climb, while requiring carabiners to have high safety performance. S1: The climber first pulls the limiting plate 6 axially and rotates it until the sliding groove 9 aligns with the hinge shaft. At this time, the movable pin 1 is in an unlocked state, and the climber can quickly move the movable pin 1 with one hand to put the rope into or take out the carabiner. S2: After the rope position is adjusted, the climber pulls the limiting plate 6 again and rotates it until the limiting groove 8 aligns with the hinge shaft, completing the locking function and ensuring that the rope will not accidentally come off. This process can be achieved with only simple operation, significantly improving the efficiency of use.

[0031] Furthermore, this invention fully considers the unique characteristics of outdoor sports environments. The embedded design of the stress spring 3 and the reset function of the torsion spring 4 work together to ensure smoother switching of the limiting piece 6 in different modes, while also guaranteeing the reliability of the limiting function. The through groove 7 design of the limiting piece 6 avoids interference with the opening and closing of the movable pin 1, while the sliding groove 9 of the snap-fit ​​opening 10 and the limiting groove 8 achieve different functional requirements through precise geometric matching. This precise structural design not only improves the overall performance of the carabiner but also extends its service life.

[0032] To further verify the practical effectiveness of this invention, multiple tests were conducted. Test results show that the carabiner of this invention performs excellently in terms of ease of one-handed operation, rapid opening and closing efficiency, and safety limiting performance. In a simulated rock climbing scenario, the carabiner can withstand a tensile force exceeding 3000N, and no loosening occurred in the locked mode. In the unlocked mode, the opening and closing speed of the movable pin 1 is approximately 40% faster than traditional carabiners, significantly improving operational efficiency. Furthermore, after 5000 consecutive opening and closing tests, all components of the carabiner maintained good working condition, with no obvious wear or deformation.

[0033] In summary, this utility model, through its ingenious structural design, successfully solves the technical problems of existing carabiners in terms of single-handed operation, rapid opening and closing, and safety limiting. The movable pin 1 automatically resets under the action of the stress spring 3, reducing operational steps, while the dual-mode switching of the limiting plate 6 meets the functional requirements of different usage scenarios. The elastic action of the torsion spring 4 and the continuous pressure of the stress spring 3 ensure the stability of the limiting plate 6 and the movable pin 1 in various states, avoiding safety hazards caused by external forces or misoperation. The technical solution of this utility model not only achieves a balance between convenience and safety but also improves overall performance through a compact and reliable structural design, possessing high practicality and promotional value.

[0034] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A type of carabiner with a limiting mechanism, characterized in that: The fastener includes a buckle body (2), a movable pin (1), a stress spring (3), a torsion spring (4), and a limiting piece (6). The buckle body (2) has a U-shaped structure and a notch on one side. One end of the movable pin (1) is rotatably connected to the buckle body (2) through a hinge shaft, and the other end has a buckling groove (5). The stress spring (3) is embedded inside the movable pin (1) and one end is fixed at the notch of the buckle body (2), while the other end applies pressure to the movable pin (1). The torsion spring (4) is sleeved on the movable pin (1) and two ends extend out limiting strips. One limiting strip is inserted into the preset hole of the movable pin (1), and the other limiting strip is fixedly inserted into the limiting piece (6). The limiting piece (6) is sleeved on the movable pin (1) and has a pair of through grooves (7) and an inwardly recessed buckling opening (10) on the top.

2. The carabiner as described in claim 1, characterized in that: The snap opening (10) of the limiting piece (6) includes a sliding groove (9) and a limiting groove (8).

3. The carabiner as described in claim 2, characterized in that: The limiting groove (8) is used to engage with the hinge shaft in the locking mode to limit the rotation of the movable pin (1).

4. The carabiner as described in claim 1, characterized in that: A hinge shaft is provided at the rotatable connection between the movable pin (1) and the buckle body (2). One end of the hinge shaft extends outward and engages with the buckling opening (10) of the limiting piece (6).

5. The carabiner as described in claim 4, characterized in that: The extended portion of the hinge shaft is used to realize the positioning function of the limiting piece (6).

6. The carabiner as described in claim 1, characterized in that: The accommodating groove (7) of the limiting piece (6) is used to avoid interference with the two ends of the notch of the buckle body (2).

7. The carabiner as described in claim 1, characterized in that: The elastic action of the torsion spring (4) enables the limiting piece (6) to automatically reset after rotation.

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