A fastener

Abstract

The utility model discloses a fastener is applied to fastener technical field, include: main part is equipped with a plurality of recesses, a plurality of opening components, the one end of each opening component is hinged in the main part, and the free end is kept abutment with the main part under the action of elastic force to close the opening of recess and form the cavity for the rope belt to set, elastic piece, one end is connected with the main part, and the other end is connected with the opening component, is used for providing the elastic force, wherein the surface of main part is equipped with the grip point area, and the direction identification part is equipped at the grip point area, and the direction identification part can be perceived through the sense of touch to indicate the relative position of each opening component. Have blind operation direction identification structure, solve the problem that traditional fastener is difficult to identify direction under the blind condition, and the operation accuracy is low, improve the use efficiency and safety of fastener under the special environment.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a fastener. Background Technology

[0002] Traditional fasteners typically require users to visually confirm the opening direction to ensure correct operation. However, in low light, at night, while wearing gloves, or in emergency situations, users may find it difficult to visually determine the fastener's orientation, leading to slow operation, high error rates, and even compromised safety.

[0003] Although some fasteners provide directional cues through color, markings, or shapes, these methods still rely on visual recognition and cannot meet the needs of blind operation.

[0004] Therefore, how to provide a fastener that does not rely on vision but can achieve orientation recognition through touch is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a fastener with a blind operation direction recognition structure, which solves the problems of difficult direction recognition and low operation accuracy of traditional fasteners under blind conditions, and improves the efficiency and safety of fasteners in special environments.

[0006] To solve the above-mentioned technical problems, this utility model provides a fastener, comprising:

[0007] The main body has several grooves;

[0008] A plurality of opening components, one end of each opening component is hinged to the main body, and the free end is kept in contact with the main body under the action of elastic force, so as to close the opening of the groove and form a cavity for the rope to pass through.

[0009] An elastic element, with one end connected to the main body and the other end connected to the opening component, is used to provide the elastic force;

[0010] The surface of the main body is provided with a gripping area, and a direction recognition part is provided at the gripping area. The direction recognition part can be perceived by touch to indicate the relative position of each of the opening components.

[0011] Optionally, the gripping area is a triangular groove recessed on the surface of the main body, and the direction recognition part is a marker block protruding from the triangular groove; the marker block is arranged opposite to the sharp corner of the triangular groove, and the sharp corner points to one of the opening components and serves as a reference opening component, so as to directly indicate the position of the reference opening component by touch.

[0012] Optionally, one side of the triangular groove is a parallel side parallel to the reference opening component; the marker block is trapezoidal, with its lower base connected to the parallel side, its upper base extending into the interior of the triangular groove, and at least one waist gradually narrowing from the lower base to the upper base, so that the marker block forms a tactile guide surface with a gradually decreasing width.

[0013] Optionally, the thickness of the marker block decreases from the lower base to the upper base, the surface of the lower base is flush with the surface of the main body, and the surface of the upper base is flush with the bottom surface of the triangular groove, so that the marker block forms a smooth gradient guide surface.

[0014] Optionally, the gripping area is provided on both the front and back sides of the main body, the gripping areas on both sides are in corresponding positions, and the triangular grooves on both sides share the same bottom surface.

[0015] Optionally, the main body is provided with an upper groove and a lower groove; the upper groove has an upper opening component at its upper opening, and the lower groove has a lower opening component at its lower opening; the upper opening faces the side edge of the main body, and the lower opening faces the lower edge of the main body; the upper groove and the lower groove are offset from each other in both the horizontal and vertical directions, forming an offset space below the upper groove and outside the lower groove, and the gripping point area is disposed within the offset space.

[0016] Optionally, the bottom surface of the lower groove forms a triangle with the corresponding section of the upper opening component, and the bottom surface of the lower groove extends to the opening of the free end of the upper opening component. The bottom surface of the lower groove forms a guide portion that guides the rope to slide in and pushes the upper opening component to open.

[0017] Optionally, the main body is provided with a limiting groove, which is open on one side facing the groove to form an entrance and closed on the other side to form a blind end; a limiting block is protruding from the free end of the opening component, and the limiting block slides into the limiting groove through the entrance and abuts against the blind end.

[0018] Optionally, the surface of the main body is recessed with a receiving cavity, and a hinge shaft is provided in the receiving cavity; the opening component is recessed with an abutment cavity on the side facing the groove; one end of the elastic element is bent into a connecting ring and sleeved on the hinge shaft, and the other end extends into the abutment cavity and abuts against its bottom surface to form a pre-tightening force.

[0019] Optionally, the other end of the elastic element is bent into a curved ring; the bottom surface of the abutment cavity is set as an arc surface at the end away from the hinge hole, and the curved ring fits against the arc surface.

[0020] The buckle provided by this utility model has a gripping area located on the surface of the main body, which is the main contact area when the fingers naturally grip. In use, the user places their thumb against the gripping area on one side of the main body, and the other four fingers naturally wrap around the other side of the main body to grip the buckle. The gripping area provides ample and defined hand gripping area, ensuring a stable grip and direct force application, which is both convenient and labor-saving, while significantly improving grip comfort.

[0021] The surface of the grip area is equipped with a direction recognition section, which forms tactile direction symbols through raised areas, recesses, or texture variations. When touched by a finger, the direction or sequence of the symbols can be sensed to determine the direction of the buckle and the position of each opening component. Subsequently, the user aligns the buckle with the strap and pushes it to complete the buckling operation.

[0022] Compared to existing technologies, the buckle provided in this application has a direction recognition unit on the grip area that establishes a spatial mapping through tactile feedback. This allows the buckle to maintain the convenience of one-handed operation while increasing the dimension of direction recognition, improving operational accuracy, and enhancing efficiency and safety. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 An exploded view of a fastener provided in a specific embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the opening in the fastener of this utility model when it is closed;

[0026] Figure 3 This is a schematic diagram of the opening in the fastener of this utility model when it is open;

[0027] Figure 4 for Figure 1 Detailed view of point A in the middle;

[0028] Figure 5 for Figure 1 Another detailed view of point A in the middle;

[0029] Figure label:

[0030] 1-Main body; 2-Upper opening component; 3-Lower opening component; 4-Elastic component; 5-Grip area; 6-Lower cavity; 7-Upper cavity; 8-Abutment cavity; 9-Hinge shaft; 10-Opening and closing port; 11-Receiving cavity; 12-Limiting groove; 13-Guide part; 41-Bending ring; 51-Marking block. Detailed Implementation

[0031] The core of this utility model is to provide a fastener with a blind operation direction recognition structure, which solves the problems of difficult direction recognition and low operation accuracy of traditional fasteners under blind conditions, and improves the efficiency and safety of fasteners in special environments.

[0032] 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.

[0033] In one specific embodiment provided by this utility model, please refer to... Figures 1-5 The fastener mainly includes a main body 1, several opening components, and an elastic element 4. The main body 1 has several grooves; one end of each opening component is hinged to the main body 1, and the free end is kept in contact with the main body 1 under the action of elastic force to close the opening of the groove and form a cavity for the rope to pass through; one end of the elastic element 4 is connected to the main body 1, and the other end is connected to the opening component to provide elastic force; wherein, the surface of the main body 1 is provided with a gripping area 5, and a direction recognition part is provided at the gripping area 5. The direction recognition part can be perceived by touch to indicate the relative position of each opening component.

[0034] It should be noted that the main body 1 is a single load-bearing base with several through grooves on its surface. The openings of the grooves face outwards to receive ropes. Each groove is equipped with an opening component, one end of which is hinged to the main body 1, forming a rotation center, while the other end is a free end that can swing around the hinge point. Preferably, both the main body and the opening component can be made of aluminum to reduce the weight of the buckle, making it suitable for outdoor sports, safety belts, backpacks, and other scenarios. Under the continuous elastic force applied by the elastic element 4, the free end of the opening component is always pressed against the main body 1, thereby closing the opening of the groove and forming a closed cavity around the groove. The cavity can be opened at the opening component to allow ropes to enter and exit. When the rope enters, the rope aligns with the opening component and applies pressure to the opening component towards the groove side, pushing the opening component to swing around the main body 1. That is, the opening component is pushed open, the opening opens, the rope enters the cavity, the elastic element 4 then resets, and the free end re-abuts against the main body 1, completing the locking. The elastic element 4 is connected to the main body 1 and the opening component at both ends, and its deformation and recovery cycle provides power and restoring force for the entire fastening process.

[0035] The grip area 5 is located on the surface of the main body 1 and is the main contact area when the fingers naturally grip. In use, the user places their thumb against the grip area 5 on one side of the main body 1, and the other four fingers naturally wrap around the other side of the main body 1 to grip the buckle. Two common methods of inserting the cord can then be used: First, keeping the cord in the same position, move the buckle closer to the cord, so that the opening component first presses against the cord, then continue applying pressure to make the opening component rotate, the opening open, and the cord slide into the cavity; second, keeping the buckle in the same position, push the cord towards the opening component, the cord presses against the opening component to make it rotate, the opening open, and the cord enters the cavity. Regardless of the method used, the grip area 5 provides ample and defined hand grip area, ensuring a stable grip and direct force application, making it convenient and effortless, while significantly improving grip comfort.

[0036] The surface of the grip area 5 is equipped with a direction recognition section. This section forms tactile directional symbols through raised areas, recesses, or texture variations, providing clear tactile cues using the pointing of the tip and the gradient contour. When touched, the finger can perceive the direction or sequence of the symbols, thereby determining the spatial position of each open component. For example, if the tip of the symbol points to a certain side, it indicates that side is the first open component, and the remaining components are arranged sequentially according to the direction of the symbol's extension, thus determining the direction of the buckle and the position of each open component. Subsequently, the user aligns the buckle with the strap and pushes to complete the buckling operation. Thus, even in situations where direct vision is impossible, such as darkness, wearing gloves, or high-speed movement, the user can rely on the tactile sensation of their fingertips to confirm direction, accurately select the required open component, and complete the quick connection, achieving blind operation.

[0037] The buckle provided in this application uses a directional recognition unit on the grip area 5 to establish a spatial mapping through tactile feedback. This increases the dimension of directional recognition while maintaining the convenience of one-handed operation, improving operational accuracy, efficiency, and safety. The entire function is achieved through local shape changes on the surface of the main body 1, requiring no electronic components or additional parts, resulting in a simple structure, low cost, and high reliability. This buckle is suitable for various quick-connection scenarios, especially for outdoor sports, safety belts, backpacks, and other fields.

[0038] In some embodiments, the gripping area 5 is a triangular groove recessed on the surface of the main body 1, and the direction recognition part is a marker block 51 protruding from the triangular groove; the marker block 51 is disposed opposite to the sharp corner of the triangular groove, and the sharp corner points to one of the opening components and serves as a reference opening component, so as to directly indicate the position of the reference opening component by touch.

[0039] It should be noted that the triangular groove is concave, forming a tactile basin where the fingers naturally fall, used to locate the operating position. Preferably, the outline of the triangular groove is an equilateral triangle, with a depth of 1mm to 5mm, facilitating tactile recognition by the fingers. The marker block 51 protrudes upward from one side of the triangular groove, creating a height contrast with the bottom of the groove, becoming the first tactile peak perceived by the fingertips. The marker block 51 is used to determine the hand's grip orientation. The height difference between the triangular groove and the marker block 51 highlights the directional information, eliminating the need for visual confirmation.

[0040] The orientation recognition is based on the relative relationship between the apex of the triangular groove and the marker block 51. That is, the apex is located at the top of the triangular groove, the marker block 51 is placed on the opposite side, and the line connecting the two forms a perpendicular line. The opening component pointed to by the extension of the perpendicular line is selected as the reference opening component.

[0041] During recognition, when a finger falls into the triangular groove, it first touches the raised marker block 51, and then slides along the vertical line towards the apex, thus perceiving the peak-valley-apex three-segment sequence. This sequence is converted into a spatial vector, thereby establishing an intuitive mapping of the apex as the reference end. Once this mapping is formed, touching the marker block 51 in subsequent operations will determine the orientation of the reference opening component, thereby completing the buckle orientation calibration. Based on the known positional relationship between the reference opening component and the other opening components, the position of the designated opening component can be obtained, and the guide rope can then be inserted into the designated opening component.

[0042] Therefore, it can be seen that the entire buckling process of the rope can be completed entirely by touch, with accurate orientation recognition. External environments such as gloves, oil stains, and low light do not weaken the recognition, making it easy to operate and ensuring high accuracy of rope connection.

[0043] In some embodiments, one side of the triangular groove is a parallel side parallel to the reference opening component; the marker block 51 is trapezoidal, with its lower base connected to the parallel side, its upper base extending into the interior of the triangular groove, and at least one waist gradually narrowing from the lower base to the upper base, so that the marker block 51 forms a tactile guide surface with a gradually decreasing width.

[0044] It should be noted that the triangular groove is given a side parallel to the direction of the closed reference opening component, i.e., a parallel side. This parallel side serves as the baseline of the tactile coordinate system, calibrating the position of the marker block 51. The marker block 51 adopts a trapezoidal cross-section, with its lower base seamlessly connected to the parallel side, and its upper base extending into the interior of the triangular groove. At least one waist gradually narrows from the lower base to the upper base, that is, from the parallel side of the triangular groove to the apex of the marker block 51, its width gradually narrows. Thus, the trapezoid forms a continuously changing surface that is wide in and narrow out in the direction of fingertip sliding, i.e., a tactile guiding surface, thereby transforming direction recognition into a tactile, gradually changing track. It should be explained that the upper base refers to the shorter parallel side of the trapezoid, the lower base refers to the longer parallel side of the trapezoid, and the waist refers to the non-parallel side connecting the upper and lower bases.

[0045] During recognition, the moment the fingertip slides into the triangular groove from the surface of the main body 1, it first touches the wide end where the parallel side and the bottom base meet; as it continues to advance, the width of the waist surface gradually decreases, forming an inward slope. The fingertip slides inward along the converging slope, and the change in width becomes the direction ruler, so that the direction confirmation and calibration can be completed quickly and accurately.

[0046] This structure simplifies complex spatial judgment into a tactile experience of width and narrowness; parallel edges ensure correct reference, while the trapezoidal tapering surface provides directional thrust. Users can achieve directional recognition even when wearing gloves or in slippery environments such as oil or rain.

[0047] In this embodiment, the tapering width of the marker block 51 provides a clear guiding direction, and the relative position between the apex of the triangular groove and the marker block 51 also provides a guiding line; the two form a dual guide, which can be read independently and verified by each other. After guiding the reading direction along the width with the fingertip, the position of the setting opening component can be quickly and accurately locked by calibrating the line connecting the apex and the marker block 51, thus achieving a fast and accurate connection of the rope and improving the operation speed and safety.

[0048] In some embodiments, the thickness of the marker block 51 decreases from the bottom to the top, the surface of the bottom is flush with the surface of the body 1, and the surface of the top is flush with the bottom surface of the triangular groove, so that the marker block 51 forms a smooth gradient guide surface.

[0049] It's important to understand that the marker block 51 is given a gradual thickness variation, giving the trapezoidal guide surface not only a wide-narrow planar change but also a three-dimensional height transition, thus forming a three-dimensional tactile slide. Specifically, the bottom of the marker block 51 is flush with the surface of the main body 1, while the top is lowered to be flush with the bottom of the triangular groove. The thickness decreases from the bottom to the top, forming a continuous slope from the outside in. When the fingertip slides across it, it experiences a continuous change from high to low, making the guidance information more three-dimensional and intuitive.

[0050] The flush bottom ensures a seamless connection between the marker block 51 and the surface of the main body 1, avoiding the feeling of jamming caused by abrupt steps; the flush top allows the marker block 51 to ultimately integrate into the bottom surface of the triangular groove, forming a natural endpoint. The thickness reduction process is completed on a single inclined plane, making the guide surface smooth and without sharp edges, reducing fingertip friction fatigue, while maintaining the unidirectionality of the direction signal, that is, from high to low, corresponding to from the parallel side to the sharp corner, which is consistent with the aforementioned judgment of the tapering width of the marker block 51 and the judgment of the relative position between the sharp corner of the triangular groove and the marker block 51.

[0051] During recognition, the fingertip first senses the lower surface at the highest position, then slides along the gradually decreasing slope to the lower upper surface area, sensing the direction of decreasing height; when the fingertip sinks into the bottom of the triangular groove, the guidance ends, and the endpoint position is matched with the reference opening component to complete the direction confirmation.

[0052] In this embodiment, the decreasing thickness creates a streamlined guide surface, reducing tactile noise; the flush design eliminates the risk of edge scratches, improving comfort; and the unidirectional sliding enhances directional memory, preventing confusion even with repeated use. Through this continuous three-dimensional guidance, users can identify directions by sliding in various visually limited environments, ensuring fastener connection is fast, accurate, and safe.

[0053] In some embodiments, the front and back sides of the main body 1 are provided with gripping areas 5, the gripping areas 5 on both sides are in corresponding positions, and the triangular grooves on both sides share the same groove bottom surface.

[0054] It should be noted that the gripping area 5 is mirrored on both the front and back of the main body 1, with the positions on both sides completely corresponding, forming a back-to-back tactile window. The triangular grooves on both sides share the same bottom surface, that is, the main body 1 is hollowed out into a thin wall in this area, with both sides of the thin wall being concave, while retaining a uniform bottom contour. Thus, the triangular grooves on the front and back sides not only completely overlap geometrically, but also maintain synchronization in tactile information. Regardless of which side is gripped, the fingertips can contact the same sharp corners, parallel sides, and the direction of the marker block 51, achieving feedback in the same direction on both sides. The unique direction can be confirmed without comparison, and then the cord is guided to insert into the designated opening component. Furthermore, when the thumb and index finger land on the front and back sides respectively, they can simultaneously touch the same set of tactile elements, forming a symmetrical grip; the sliding action on either side is transmitted to the other side through the thin wall, so that the two fingers receive an instant and consistent guiding signal, avoiding misalignment of information between the left and right hands. At the same time, the triangular grooves on both sides reduce the material thickness, achieving a lightweight design.

[0055] In this embodiment, the shared bottom surface of the slot eliminates the difference between the front and back sides, so that orientation recognition no longer depends on a specific hand shape or a specific viewing surface; dual-sided synchronous feedback provides redundant verification, and tactile confirmation from either side can be regarded as a valid criterion for overall orientation, further improving the reliability of recognition and the speed of operation. Regardless of whether the user is left-handed or right-handed, or in a slippery environment such as with gloves or oil, consistent orientation information can be obtained through a single clamping, ensuring that the fastener connection is fast, accurate, and safe.

[0056] In some embodiments, the main body 1 is provided with an upper groove and a lower groove; the upper opening of the upper groove is provided with an upper opening component 2, and the lower opening of the lower groove is provided with a lower opening component 3; the upper opening faces the side edge of the main body 1, and the lower opening faces the lower edge of the main body 1; the upper groove and the lower groove are offset from each other in the horizontal and vertical directions, and together form an offset space below the upper groove and outside the lower groove, and the gripping point area 5 is disposed in the offset space.

[0057] It is important to understand that the upper and lower grooves are offset by a distance both horizontally and vertically, so that the openings of the two grooves do not overlap. The opening of the upper groove faces the side edge of the main body 1, and the upper opening component 2 can be closed by swinging inward; the opening of the lower groove faces the lower edge of the main body 1, and the lower opening component 3 can be closed by flipping upward. After the offset, the bottom wall of the upper groove naturally hangs outside the lower groove, while the side wall of the lower groove gives way to the upper area, forming an offset space between the two.

[0058] The gripping area 5 is embedded in the misaligned space, neither weakened by the upper groove nor encroached upon by the lower groove, maximizing structural utilization. Since the gripping area 5 is located below the upper groove and outside the lower groove, its uniform wall thickness and sufficient rigidity allow for the safe creation of triangular slots and marker blocks 51 without affecting the strength of the two grooves. Simultaneously, the misalignment creates a defined distance between the gripping area 5 and the two open components. That is, after confirming the direction in the gripping area 5, moving the fingertip upwards reaches the upper open component 2, and moving it downwards reaches the lower open component 3, enabling rapid identification of the two open components.

[0059] When in use, the thumb and forefinger hold the gripping area 5 within the misaligned space and read the direction of the sharp corner and the marker block 51; determine the position of the upper opening component 2 and the lower opening component 3 based on the direction; the wrist does not need to be repositioned to achieve quick connection of the two ropes.

[0060] In this embodiment, the misaligned space becomes a transit point for tactile sensation and operation, reducing the distance the fingers need to move, enabling seamless action of direction recognition and cable connection, and improving connection speed and safety.

[0061] In some embodiments, the bottom surface of the lower groove forms a triangle with the corresponding section of the upper opening member 2, and the bottom surface of the lower groove extends to the opening 10 of the free end of the upper opening member 2. The bottom surface of the lower groove forms a guide portion 13 that guides the rope to slide in and pushes the upper opening member 2 to open.

[0062] It should be noted that the bottom surface of the lower groove extends upward to the opening 10 at the free end of the upper opening component 2, and the corresponding sections of both are triangular; thus, the bottom surface of the lower groove becomes an outwardly inclined guide part 13, whose inclined surface naturally connects with the side wall of the upper opening component 2, and the guide part 13 uses the insertion kinetic energy of the rope to complete the automatic opening.

[0063] In use, after determining the direction by holding the gripping area 5, push the cord close to the bottom surface of the lower groove; the front end of the cord touches the triangular guide part 13, is lifted by the inclined surface and guided to the opening 10; near the highest point of the inclined surface, the cord pushes against the free end of the upper opening part 2, the opening part overcomes the resistance of the elastic element 4 and rotates inward, the opening is released; the cord enters the upper cavity 7, the elastic element 4 resets, the opening part springs back and re-abuts the main body 1, completing the locking. Throughout the process, the user does not need to apply additional force to the opening part, and by maintaining the forward movement of the cord, the cord can be connected to the cavity.

[0064] In this embodiment, the bottom surface of the lower groove provides an initial slide for the rope and also serves as the force application surface for the opening lever, eliminating the need for an additional handle or button and enabling quick engagement; the triangular contour ensures a continuous transition between guidance and pushing, avoiding jamming.

[0065] In some embodiments, the main body 1 is provided with a limiting groove 12, which is open on one side of the groove to form an entrance and closed on the other side to form a blind end; a limiting block is protruding from the free end of the opening component, and the limiting block slides into the limiting groove 12 through the entrance and abuts against the blind end.

[0066] It needs to be explained that the main body 1 has a single-sided open limiting groove 12 at the edge of the groove, with an entrance on one side facing the groove and a solid wall on the opposite side forming a blind end. The free end of the opening component protrudes in the opposite direction with a limiting block. When the rope is pushed into the cavity, the elastic element 4 releases torque. When the opening component rebounds and closes under the action of the elastic element 4, the limiting block slides into the limiting groove 12 through the entrance until its front end abuts against the blind end. The top surface of the limiting block fits against the bottom surface of the limiting groove 12, achieving closure and locking. In other words, the limiting groove 12 and the limiting block form a hidden locking tongue mechanism. The limiting block is hidden inside the limiting groove 12, preventing the snagging of clothing or the accumulation of mud and sand, thus improving environmental adaptability. The blind end, as the mechanical endpoint, bears all the reverse load, preventing the opening component from moving outward under tension, thereby closing the rope inside the cavity. The limiting block and the inner wall of the limiting groove 12 can be fitted together, automatically correcting the component posture during the closing process and eliminating gap deviations caused by manufacturing or wear.

[0067] In some embodiments, the surface of the main body 1 is recessed with a receiving cavity 11, and a hinge shaft 9 is provided in the receiving cavity 11; the opening component is recessed with an abutment cavity 8 on the side facing the groove; one end of the elastic member 4 is bent into a connecting ring and sleeved on the hinge shaft 9, and the other end extends into the abutment cavity 8 and abuts against its bottom surface to form a pre-tightening force.

[0068] It should be explained that the surface of the main body 1 is recessed to form a receiving cavity 11. A hinge shaft 9 is horizontally placed between the walls of the receiving cavity 11, and the outer periphery of the hinge shaft 9 becomes the rotation center of the opening component. The opening component has an abutment cavity 8 carved on the side facing the groove, and the inner wall of the opening component has a double-shell shape. One end of the elastic element 4 is bent into a connecting ring and directly fitted onto the hinge shaft 9 to achieve both positioning and rotation; the other end extends into the abutment cavity 8 and abuts against the bottom surface of the abutment cavity 8, thereby converting the torsional elastic force into a continuous pressing force on the opening component. The hinge shaft 9 is provided with a connecting hole; the opening component is provided with a hinge hole and aligned with the connecting hole. The connecting hole and the hinge hole are connected by a pin, and the opening component is hinged to the main body 1 by the pin.

[0069] Since both the hinge shaft 9 and the abutment cavity 8 are located within their respective recessed areas, the elastic element 4 is concealed within the wall thickness of the main body 1 and the opening component, exhibiting a smooth, streamlined exterior with no protruding spring end, thus preventing snagging or dust accumulation. The connecting ring and the hinge shaft 9 are clearance-fitted, allowing the opening component to swing freely while ensuring that the elastic element 4 does not slip laterally during torsion. The bottom surface of the abutment cavity 8 serves as the stress-bearing surface, forming surface contact with the end of the elastic element 4 to distribute stress and prevent localized indentation or fatigue fracture.

[0070] When open, the opening component rotates inward, moving the bottom surface of the abutment cavity 8 away from the hinge shaft 9. The elastic element 4 is further twisted, and the connecting ring rotates on the hinge shaft 9 to avoid additional friction. When closed, the elastic element 4 rebounds, and its end pushes against the bottom surface of the abutment cavity 8, driving the opening component to quickly reset. At the same time, it keeps the connecting ring in a sleeved state, thus locking the opening component. The entire force chain is short and direct, and the preload is determined by the depth of the abutment cavity 8 and the arm length of the elastic element 4, eliminating the need for adjusting screws or external clips.

[0071] In some embodiments, the other end of the elastic member 4 is bent into a curved ring 41; the bottom surface of the abutment cavity 8 is set as an arc surface at the end away from the hinge hole, and the curved ring 41 fits against the arc surface.

[0072] It should be explained that the bending ring 41 is formed by bending the end of the elastic element 4 in a natural way, and its curvature is consistent with the arc surface at the far end of the contact cavity 8. When the opening component springs back to close, the bending ring 41 naturally falls into the arc surface depression, and the outer periphery is continuously tangent to the arc surface, expanding the original point contact into a smooth line contact and reducing the local pressure.

[0073] The bending ring 41 can roll and slide slightly on the arc surface, adapting to changes in the angle of the opening component: as the opening angle increases, the bending ring 41 rolls along the arc surface, the lever arm increases slightly, providing greater rebound force; as the angle decreases, the ring rolls downward, the lever arm shortens, avoiding overshoot impact. The arc surface also acts as a guide track, limiting the lateral movement of the bending ring 41 and preventing the end of the elastic element 4 from dislodging from the abutment cavity 8 due to lateral twisting, forming a self-stabilizing rolling pair.

[0074] In the initial closing phase, the bent ring 41 falls into the arc surface at a high position, providing rapid rebound with a larger radius; near the closing end point, the ring rolls to the bottom of the arc surface at a low position, the lever arm decreases, the rebound force decreases gently, the opening component sits smoothly, avoiding violent impact on the main body 1, producing a significant noise reduction effect, and preventing the spring tip from scratching the inner wall of the contact cavity 8.

[0075] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fastener, characterized in that, include: The main body (1) has several grooves; A plurality of opening components, one end of each opening component is hinged to the main body (1), and the free end is kept in contact with the main body (1) under the action of elastic force, so as to close the opening of the groove and form a cavity for the rope to pass through; The elastic element (4) is connected at one end to the main body (1) and at the other end to the opening component, and is used to provide the elastic force; The surface of the main body (1) is provided with a gripping area (5), and a direction recognition part is provided at the gripping area (5). The direction recognition part can be perceived by touch to indicate the relative position of each of the opening components.

2. The fastener according to claim 1, characterized in that, The grip area (5) is a triangular groove recessed on the surface of the main body (1), and the direction recognition part is a marker block (51) protruding from the triangular groove; the marker block (51) is arranged opposite to the sharp corner of the triangular groove, and the sharp corner points to one of the opening components and serves as a reference opening component, so as to directly indicate the position of the reference opening component through touch.

3. The fastener according to claim 2, characterized in that, One side of the triangular groove is a parallel side that is parallel to the reference opening component; the marking block (51) is trapezoidal, with its lower base connected to the parallel side, its upper base extending into the interior of the triangular groove, and at least one waist gradually narrowing from the lower base to the upper base, so that the marking block (51) forms a tactile guide surface with a gradually decreasing width.

4. The fastener according to claim 3, characterized in that, The thickness of the marker block (51) decreases from the lower bottom to the upper bottom. The surface of the lower bottom is flush with the surface of the main body (1), and the surface of the upper bottom is flush with the bottom surface of the triangular groove, so that the marker block (51) forms a smooth gradient guide surface.

5. The fastener according to claim 2, characterized in that, The main body (1) has gripping area (5) on both the front and back sides. The gripping area (5) on both sides is in the same position, and the triangular groove on both sides shares the same bottom surface.

6. The fastener according to claim 1, characterized in that, The main body (1) is provided with an upper groove and a lower groove; the upper opening of the upper groove is provided with an upper opening component (2), and the lower opening of the lower groove is provided with a lower opening component (3); the upper opening faces the side edge of the main body (1), and the lower opening faces the lower edge of the main body (1); the upper groove and the lower groove are offset from each other in the horizontal and vertical directions, and together form an offset space below the upper groove and outside the lower groove, and the gripping point area (5) is set in the offset space.

7. The fastener according to claim 6, characterized in that, The bottom surface of the lower groove forms a triangle with the corresponding section of the upper opening component (2), and the bottom surface of the lower groove extends to the opening (10) of the free end of the upper opening component (2). The bottom surface of the lower groove forms a guide (13) that guides the rope to slide in and pushes the upper opening component (2) to open.

8. The fastener according to claim 1, characterized in that, The main body (1) is provided with a limiting groove (12), which is open on one side of the groove to form an entrance and closed on the other side to form a blind end; a limiting block is protruding from the free end of the opening component, and the limiting block slides into the limiting groove (12) through the entrance and abuts against the blind end.

9. The fastener according to claim 1, characterized in that, The surface of the main body (1) is recessed with a receiving cavity (11), and a hinge shaft (9) is provided in the receiving cavity (11); the opening component is recessed with an abutment cavity (8) on the side facing the groove; one end of the elastic member (4) is bent into a connecting ring and sleeved on the hinge shaft (9), and the other end extends into the abutment cavity (8) and abuts against its bottom surface to form a pre-tightening force.

10. The fastener according to claim 9, characterized in that, The other end of the elastic element (4) is bent into a curved ring (41); the bottom surface of the abutment cavity (8) is set as an arc surface at the end away from the hinge hole, and the curved ring (41) fits against the arc surface.

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