Knotting pin

Abstract

This utility model relates to rope fixing and connection technology, specifically to a rope tightening and connection device. This utility model provides a rope knot pin, consisting of a main ring, two sets of bobbins, clamping arms, and guide rings, connected in sequence as a whole. After the rope passes through the main ring, it wraps around one set of bobbins and clamping arms, and under the guidance of the guide ring, it is locked into the gap between the clamping arm and the main ring. Tightening the knot pin creates a self-locking mechanism for the rope. Another rope is wrapped around the other set of bobbins and clamping arms in the same way, thus connecting two ropes. The lock is released when the rope wraps out of the gap between the guide ring, clamping arm, and main ring. Adjusting the length allows for the next self-locking. This solution has a simple structure, low cost, small size, minimal damage to the rope, good adaptability to various types and specifications of ropes, and utilizes the rope's tension for self-locking, preventing slippage.

Description

Technical Field

[0001] This utility model relates to rope fixing and connection technology, specifically to a rope tightening and connection device. Background Technology

[0002] Currently, rope tightening devices mainly include D-rings, toothed snaps, and ratchet-type rope retractors. Among these, D-rings are prone to slipping. Toothed snaps are relatively complex in structure and large in size; they can damage the rope and are not well-suited to different rope specifications. Even slight mismatches in rope cross-sectional shape, thickness, or diameter can render them ineffective. The process of switching the rope from tension to length adjustment is complex and time-consuming. Ratchet-type rope retractors are large, expensive, and complex in structure, and also not well-suited to different rope specifications. Utility Model Content

[0003] This utility model provides a rope knot pin for tightening and fixing ropes. It has a simple structure, low cost, small size, minimal damage to the rope, and good adaptability to ropes of various cross-sectional shapes. Ropes of various sizes can be matched with rope knot pins of corresponding sizes for a proper fit. It has reasonable force distribution and utilizes the rope's tension for self-locking. The greater the tension, the greater the self-locking force, making it less prone to slippage. The process of switching the rope from tension to length adjustment is simple and quick.

[0004] This utility model provides a rope brooch, comprising a main ring, two sets of bobbins, a clamping arm, and a guide ring. The main ring is a seamless closed ring composed of two straight edges and two arc segments, with the axis of the straight edges being a straight line segment. The bobbins are integrally connected to one of the straight edges of the main ring, and the axis of the bobbins is a straight line segment, located on the extension line of the axis of the straight edge of the main ring. One end of the clamping arm is integrally connected to one end of the bobbin, and the axis of the clamping arm is a straight line segment, lying in the same plane as the straight edge of the main ring and the axis of the bobbin. The clamping arm is integrally connected to the guide ring, and the axis of the guide ring is a loop curve, with the connection point being the tangent point of the axes of the two. The other straight edge of the main ring is connected to another set of bobbins, clamping arms, and guide rings in the above-described positions and connection methods.

[0005] The rope pin can connect two ropes. One rope passes upwards from under the rope pin through the main loop. After adjusting the length, the rope is looped around the top of the bobbin and clamp arm, then exits upwards at the connection point between the main loop and the bobbin, winding around the gap between the clamp arm and the main loop. Guided by the guide ring, the free end of the rope is tightened to engage with the gap between the clamp arm and the main loop, and pulled until it is near the connection point between the main loop and the bobbin. The tension between the load end and the fixed end of the rope creates a self-locking mechanism to withstand the tension. To loosen and adjust the rope length, the free end of the rope is looped back around the guide ring and pulled out from the gap between the clamp arm and the main loop. Another set of bobbins, clamp arms, and guide rings connected to the other straight edge of the main loop can be connected to another rope using the same rope looping method, thus achieving the function of connecting two ropes.

[0006] After the load rope is inserted into the gap between the clamp arm and the main ring, the gap between the clamp arm and the main ring exerts a clamping force on the rope because the load rope wraps around the clamp arm and the pile. The clamping force is proportional to the tension of the load rope. The frictional force formed by the clamping force, which is proportional to the tension, together with the frictional force that passes around the pile and the clamp arm, forms the anti-slip force of the knot on the rope.

[0007] When using the rope pin for the first time, you need to go through the main loop, around the stake and clamp arm, and then into the gap. After that, you only need to go around the stake and clamp arm and then into the gap.

[0008] The main ring consists of two straight edges and two rounded ends. The guide ring is ring-shaped. The rounded ends of the main ring and the guide ring work together to guide the rope in and out, making it easier to operate. In addition, its ring shape is smoother, making it less likely to snag foreign objects or injure people. The axis of the rope around the stake is a straight segment, and the axis of the straight edge of the main ring is also a straight segment. The sum of the lengths of these two straight segments is less than the length of the straight segment of the clamp arm axis, so that the guide ring protrudes from the main ring in the overall dimensions, making it easier to guide the rope into the gap. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not intended to limit the present invention.

[0010] Appendix Figure 1 This is a complete plan view of the rope knot brooch provided by this utility model.

[0011] Appendix Figure 2 This is a plan view of a knotted brooch.

[0012] Appendix Figure 3 This is a complete isometric drawing of the knotted brooch.

[0013] Appendix Figure 4 It is an exploded axonometric drawing of a knotted brooch.

[0014] Appendix Figure 5 This is a diagram illustrating the action of the rope passing upwards from under the knot pin through the main loop.

[0015] Appendix Figure 6 This is a schematic diagram of the rope passing through the main loop, wrapping around the clamp arm, and circling the pile.

[0016] Appendix Figure 7 This is a schematic diagram of the action where the rope, after passing around the clamp arm and the pile, is guided by the guide ring and inserted into the gap between the clamp arm and the main ring.

[0017] Appendix Figure 8 The rope is inserted into the gap and pulled tight to one side of the connection point to form a self-locking mechanism. Another rope is wound around the other straight-side connection stake and clamp arm in the same way and also self-locks.

[0018] Appendix Figure 9 It is an isometric view of the rope passing through the main loop, around the clamp arm, and around the stake in another direction, to show the rope winding method.

[0019] Appendix Figure 10 It is an isometric view in another direction after the rope is inserted into the gap and pulled taut to the vicinity of the connection point, to show the method of winding the rope.

[0020] The symbols in the diagram are: 1. Main ring, 2. Stake, 3. Clamping arm, 4. Guide ring, 5. Rope load end, 6. Rope free end. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection between the internal parts of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, one application scenario of this utility model's knot pin is as a knotting device between two ropes.

[0026] like Figure 1As shown, the rope brooch of this utility model consists of a main ring 1, two sets of winding posts 2, clamping arms 3, and guide rings 4. Figure 2 The diagram shows an exploded view of the components of the knotted brooch. The main ring 1 is a seamless closed ring composed of two straight edges and two circular arc segments, with the axis of the straight edges being a straight line segment. The bobbin 2 is integrally connected to one of the straight edges of the main ring 1, with the connection point at... Figure 2 As shown in section c, the axis of the pile 2 is a straight line segment, located on the extension line of the straight edge axis of the main ring 1; one end of the clamping arm 3 is integrally connected to one end of the pile 2, and the connection point is at... Figure 2 As shown in section b, the axis of clamping arm 3 is a straight segment, lying in the same plane as the straight edge of main ring 1 and the axis of the surrounding pile 2; clamping arm 3 is integrally connected to guide ring 4, and the connection point is at... Figure 2 As shown in section a, the axis of guide ring 4 is a circular curve, and the connection point is the tangent point of the two axes. The bobbin 2 is connected to the other straight edge of the main ring 1 as a whole. The connection position and method of the other bobbin 2, clamping arm 3, guide ring 4 and this straight edge are the same as described above.

[0027] like Figure 3 , Figure 4 The figures shown are the complete structural isometric view and the exploded structural isometric view of the knotted brooch.

[0028] like Figure 5 As shown, the first step of the rope brooch is to insert the free end 6 of the rope into the main loop 1 from below.

[0029] like Figure 6 As shown, this is the second step in the operation of the rope brooch: After the free end 6 of the rope is inserted into the main ring 1, it passes over the top of the stake 2 and the clamping arm 3, circles the stake 2 and the clamping arm 3 once, and is led out upward from the side of the connection point between the main ring 1 and the stake 2.

[0030] like Figure 7 As shown, this is the third step in the operation of the rope brooch: After the free end 6 of the rope is led upwards from the connection point between the main ring 1 and the bobbin 2, it is guided to the guide ring 4. Under the guidance of the guide ring 4, the free end 6 of the rope is inserted into the gap between the clamping arm 3 and the main ring 1. The axis of the bobbin 2 is a straight segment, and the axis of the straight side structure of the main ring 1 is a straight segment. The sum of the lengths of these two straight segments is less than the length of the straight segment of the clamping arm 3's axis, so that the guide ring 4 protrudes beyond the main ring 1 in overall dimensions, facilitating the insertion of the rope into the gap. The axis of the clamping arm 3 is in the same plane as the axis of the bobbin 2 and its extended straight side to complete the clamping function.

[0031] like Figure 8As shown, this is the fourth step in the operation of the rope brooch: tightening the free end 6 of the rope to form a self-locking mechanism. Its working principle is as follows: the straight edge of the main loop 1 and the bobbin 2 along its extension, together with the clamping arm 3, create a clamping force on the rope. The connection point where the clamping arm 3 and the end of the bobbin 2 are integrated, and the elastic properties of the clamping arm 3 material, provide an initial clamping force on the rope. Before the load end 5 of the rope is subjected to force, the free end 6 of the rope maintains initial stability, meaning it will not loosen even when not under force. When the load end 5 of the rope begins to bear tension, because the rope wraps around the bobbin 2 and the clamping arm 3 once, the tension will compress between the bobbin 2 and the clamping arm 3, thus creating a clamping force on the free end 6 of the rope. This clamping force generates a frictional force on the rope. When the rope knot pin is in operation, the anti-slip force at the load end 5 of the rope is equal to the sum of the frictional force of the rope winding around the rope knot pin and the frictional force on the rope formed by the clamping force of the rope knot pin. Both the frictional force formed by the clamping force and the winding frictional force increase with the increase of the tension at the load end 5 of the rope, that is, self-locking is formed, and it becomes tighter and tighter as it is pulled. Another set of bobbins 2, clamping arms 3, and guide rings 4, which are connected to the other straight edge of the main ring 1, can be connected to another rope in the above-described rope winding method to achieve the function of connecting two ropes.

[0032] When untying the knot, the free end 6 of the rope goes around the guide loop 4, and the knot is then loosened and returns to its original position. Figure 5 In the first step of the single-load rope mode, the rope is pulled in the main loop 1 to adjust the knot position, preparing for the next knot locking.

[0033] The main ring consists of two straight edges and two rounded ends. The guide ring is ring-shaped. The rounded ends of the main ring and the guide ring work together to guide the rope in and out, making it easier to operate.

[0034] like Figure 9 , Figure 10 As shown in the isometric view, the rope only wraps around the pile 2 and the clamp arm 3.

Claims

1. A knot pin for tightening and secure attachment of a cord, loosening and adjustment of the length of the cord, characterized in that, It includes a main loop (1) for tightening and securing the rope, loosening and adjusting the rope length, a bobbin (2), a clamp (3), and a guide ring (4).

2. The knotted brooch according to claim 1, characterized in that: The main ring (1) is a seamless closed ring.

3. The knotted brooch according to claim 1, characterized in that: The main ring (1) has two straight sides, and the axis of the straight side structure is a straight line segment.

4. A knotted brooch according to claim 1, characterized in that... The main ring (1) has two segments that are circular arcs, and the axis of the circular arc structure is a circular arc line segment.

5. A knotted brooch according to claim 1, characterized in that... The axis of the pile (2) is a straight line segment, which is on the extension line of the straight line segment of the straight side of the main ring (1).

6. A knotted brooch according to claim 1, characterized in that... One end of the pile (2) is connected to the main ring (1) as a whole.

7. A knotted brooch according to claim 1, characterized in that... One end of the clamp arm (3) is connected to one end of the pile (2).

8. A knotted brooch according to claim 1, characterized in that... One end of the clamping arm (3) is connected to the guide ring (4), and the connection point is the point of tangency where the axis of the clamping arm (3) and the curved axis of the guide ring (4) are tangent.

9. A knotted brooch according to claim 1, characterized in that... The axis of the pile (2) is a straight line segment, and the axis of the straight edge structure of the main ring (1) is a straight line segment. The sum of the lengths of the two straight line segments is less than the length of the straight line segment of the clamp arm (3).

10. A knotted brooch according to claim 1, characterized in that... The axis of the pile (2) is on the extension line of the straight edge axis of the main ring (1), and the extension line is in the same plane as the axis of the clamping arm (3).

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