A rope length adjuster.
The device with two connected ring portions and a gripping feature enables secure and efficient rope length adjustment, addressing the issues of knot slippage and ease of use in windy conditions.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- AT IDEA CORP
- Filing Date
- 2024-10-07
- Publication Date
- 2026-04-17
AI Technical Summary
Existing methods for adjusting the length of a tightened rope in the middle, such as creating a knot or using a ring and hook, are prone to coming undone, especially in windy conditions, and are cumbersome to untie or re-tie.
A device comprising two ring portions, A and B, connected at two points to form a closed shape, with a rope passage, allowing the rope to be easily shortened and tightened by looping it around the rings, and featuring a gripping portion for easy handling.
The device allows for secure and efficient rope length adjustment without frequent re-tying, resisting wind-induced loosening and facilitating easy knot release.
Smart Images
Figure 2026066928000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a device for adjusting the length at the center of a rope when the tightened rope loosens.
Background Art
[0002] Conventionally, when setting up a tent, a universal fitting described in Patent Document 1 is widely used to adjust the length of the rope at the end of the rope.
Patent Document
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] To shorten a tightened rope in the middle, there are methods such as creating a knot in the middle of the rope or winding it around a branch or stick and fastening it, or passing the rope through a ring and hanging it on a protrusion or hook connected to the ring. However, it often comes off at the part where the rope is hung in strong wind. For example, if the groove of the hook for hanging the rope is made deeper, it will be troublesome when removing the rope from the hook. When the rope stretched in a flower bed or a field in gardening or agriculture loosens, it is convenient if the rope can be easily shortened and tightened with a simple knot in the middle of the rope without having to re-tie the end of the rope each time, and if the release is also easy. The simple method of tying a cow hitch that only hangs on a ring has the drawback that it easily comes off when the ropes are pulled on both sides and shaken up and down. The present invention aims to solve the above problems.
Means for Solving the Problems
[0005] In the first embodiment of the present invention, two ring portions are provided, with ring portion A obtained by removing a part of one ring portion and ring portion B obtained by removing a part of the other ring portion, and both ends of ring portion A and ring portion B are connected at two connection points to form a closed shape, and the maximum width of both ring portions A and ring portion B parallel to the line connecting the two connection points at both ends of ring portion A and ring portion B is greater than the width of the two connection points.
[0006] In a second embodiment of the present invention, rings A and B have a shape in which part of a circle, an ellipse, or a polygon is included.
[0007] A third embodiment of the present invention is one in which a gripping portion is provided on either ring portion A or ring portion B. [Effects of the Invention]
[0008] This invention allows you to easily shorten and tighten a rope in the middle of the rope by simply repeatedly placing the rope around the loop of the invention in the middle of the slackened rope, without having to re-tie the ends of the rope. The rope is less likely to come loose even if the ropes on both sides of the loop are swung around, and the knot can be easily untied without getting tangled. [Brief explanation of the drawing]
[0009] [Figure 1] A perspective view of an example of a whole constructed using the wire of the present invention. [Figure 2] Figure 1 of this invention is a perspective view showing the order in which the rope is attached. [Figure 3] This is a front view of the present invention, showing the knot shown in Figure 2 being placed once around the loop A in Figure 1, with the rope being pulled from both sides. [Figure 4] A perspective view of the present invention, showing circles on both sides of ring portion A and ring portion B. [Figure 5] A front view of the present invention, showing the knot shown in Figure 2 wrapped around the loop A in Figure 4 three times, with the rope pulled from both sides. [Figure 6] A perspective view of an example in which a rectangular parallelepiped gripping portion is provided on the ring portion B of Figure 1 of the present invention. [Figure 7] Front view of the present invention, showing the knot shown in Figure 2 wrapped around the loop A in Figure 6 three times, with the rope pulled from both sides. [Figure 8] A perspective view of an example in which the ring portion A of the present invention is formed into a rhombus shape using wire. [Figure 9] A perspective view of an example of an integrally molded product of the present invention. [Figure 10] A perspective view of Figure 10 of the present invention, flattened into a plate. [Figure 11] A front view of the present invention, where ring portion A is circular and ring portion B is heart-shaped. [Modes for carrying out the invention]
[0010] The present invention provides two ring sections, with ring section A1 formed by removing a part of one ring section and ring section B2 formed by removing a part of the other ring section. Both ends of ring section A1 and ring section B2 are connected at two connection points, forming a closed shape. The maximum width of both ring sections A1 and B2 parallel to the line connecting the two connection points at both ends of ring section A1 and ring section B2 is greater than the width of the two connection points. Ring sections A1 and B2 have a shape that includes part of a circle, an ellipse, or a polygon. The present invention will be described below with reference to the figures. As shown in Figure 1, a ring portion A1 which has a circle in part and a ring portion B2 which has a polygon 2 in part are connected at two points, ring portion A and ring portion B, which have a closed shape and are equipped with a rope passage portion 4 through which a rope passes. Figure 4 shows an example of the present invention in which ring portions A and B are made of circles, and Figure 6 shows an example in which a gripping portion is provided on ring portion B of Figure 1. The knot used in the present invention is as follows: As shown in Figure 2A, the rope 5 on the far side of ring portion A1 is passed through the rope passage portion 4 and pulled towards the front side of ring portion A1, as shown in Figure 2B, the rope is brought closer to ring portion A1, as shown in Figure 2C, the rope is placed over ring portion A1 and the rope 5 is pulled towards ring portion B2 on the far side of ring portion A1, and when the rope 5 is pulled on both sides, the rope 5 becomes entangled with ring portion B2 and ring portion connection point 1a, forming the first knot. If you repeat the process of pulling the rope that is on the other side of loop A1 through the rope passage 4 to the front side of loop A1, loop it around loop A1, and pull it towards loop B2, a knot will be formed each time, and the rope 5 will be shortened by the amount it has gone around the circumference of loop B2. When manipulating the rope 5 in Figure 2, the loop B2 is being held with the fingers. If you tie the cow hitch knot shown in Figure 2 to an ordinary circular loop and pull the rope 5 to both sides, the knot of the rope 5 will spread out at both ends of the circle, and if you shake the rope 5 up and down, the rope 5 will easily come off the direction of the loop it was looped around.
[0011] In Figures 3, 5, and 7, when the rope 5 is wrapped around the loop A1 and pulled from both sides, the loop A1 faces downwards towards the ground, and the rope 5 pulls the loop B2 diagonally upwards outwards from near the maximum diameter of the loop B2 on both sides, parallel to the line connecting the two points of the loop connection point 1a. In Figure 3, the knot is made with one wrap between the loop connection points 1a on both sides and the maximum diameter of the loop B2, and the rope 5 fits into the recesses of the two loop connection points 1a. In Figures 5 and 7, the rope is wrapped around the loop A1 three times, making three wraps between the loop connection points 1a on both sides and the maximum diameter of the loop B2, and in the third knot, the rope 5 fits into or gets caught in the recesses of the two loop connection points 1a.
[0012] If we modify Figure 1 to create a prototype of a ring A1 with the same diameter as the distance between the two points of the ring connection point 1a, and extend wires parallel to each other with the same width from the two points of the ring connection point 1a, and then, as in Figure 3, wrap the rope 5 once around the ring A1 and swing the rope 5 up and down with both hands, the center of the rope 5 will separate and loosen and come off before the ring connection point 1a. If we tilt the aforementioned prototype outward by about 20 degrees from the two points of the ring connection point 1a, making the maximum diameter of the ring A1 larger than the distance between the two points of the ring connection point 1a, and then wrap the rope 5 once around the ring A1 and swing the rope 5 up and down with both hands, the rope 5 will not loosen and will fit into the recess of the ring connection point 1a.
[0013] This invention makes it easy to use ropes with a diameter of 6 mm or less, which are commonly used in camping, flowerbeds, and fields. When using the rope, if you manipulate it by hand, considering the thickness of a finger with a diameter of 15 mm, the size of the rope passage 4 needs to be at least 15 mm wide, and if it is 20 mm or wider, it is easier to manipulate the rope with your fingers.
[0014] In Figures 4 and 5, the larger circle was designated as the loop A1 for attaching the rope, but the smaller circle could also be designated as the loop A1. Experiments were conducted using two types of rope: a 5mm diameter rope and a 2mm diameter kite string, with two loops, a 30mm diameter loop and a 15mm diameter loop, connected at two points 1a with a width of 6mm. When the present invention, with the rope 5 attached to the smaller loop and three knots formed in the larger loop, was swung up and down by holding both ends of the rope 5, the third knot fit into the recesses of the loop connection points 1a on both sides, and the first and second knots created two wraps between the loop connection points 1a on both sides and the maximum diameter of the loop. The same result was obtained even when the larger circle was designated as the loop A1 for attaching the rope 5 and the smaller circle as the loop B2. Furthermore, when using a 5mm diameter rope 5 and wrapping it around the larger ring A1 eight times, five knots filled the smaller ring B2, and three knots protruded onto ring A1. However, the rope was wrapped above and below the recess of the ring connection point 1a, and even when the device was swung up and down in the air, the rope 5 did not loosen between the ring connection point 1a and the maximum diameter of ring A1.
[0015] In Fig. 6, a rectangular parallelepiped gripping portion 3 is provided on the rim portion B of Fig. 1. When the gripping portion 3 is provided, it is easy to grip with fingers and is easy to use when hanging a rope on the rim portion A1. In Figs. 1 and 4, since the finger holds the rim portion B2 on the opposite side of the rim portion A1 where the rope is hung, the rim portion B2 automatically serves as the gripping portion 3.
[0016] In Figs. 3, 5, and 7, to release at the center of the rope with the rope 5 wound around the rim portion B2, by sliding the entire one knot of the rope 5 to the part where the rope on the rim portion A1 is hung and pulling the rope 5, it is convenient that the rope 5 can be easily released in a few seconds without the need to pass the rope through the ring. This is one of the features of this knot.
[0017] The present invention can be manufactured only with wires in Figs. 1 and 4, and the gripping portion 3 held by fingers shown in Fig. 6 also has a simple structure for manufacturing. The gripping portion 3 can be manufactured with resin, wood, metal, etc., and the rim portion A1 and the rim portion B2 can be manufactured with wires, resin, or metal. Fig. 8 shows an example in which the rim portion 1 is made of a rhombus-shaped wire, Fig. 9 shows an example in which the rim portion A and the rim portion B are integrally formed, Fig. 10 shows an example in which Fig. 9 is flattened, and Fig. 11 shows the present invention in which the circular rim portion A1 and the heart-shaped rim portion B2 are connected. If the rim portion B2 around which the rope 5 winds is thick, the length by which the rope 5 is shortened becomes large, and if the rim portion B2 is thin, the length by which it is shortened becomes small. If the portion where the rope is hung is thick as in Fig. 9, the length by which the rope 5 is shortened becomes large.
[0018] The present invention is easy to use with a thin rope having a thickness of 2 to 6 mm, and the shortening length of the rope when the rope passes through the rope passing portion 4 once and is wound around the rim portion B2 will be described. When using a rope with a thickness of 4 mm on the wire with a thickness of 2 mm in Fig. 1, the center of the rope goes around a circle with a radius of 3 mm twice, so the shortening is 2xπ×radius×2 = approximately 37.7 mm. When the perimeter of the rectangle in the cross-section of the rim portion B2 in Fig. 10 is 20 mm and a rope with a thickness of 4 mm is wound, the rope is shortened by 72 mm.
[0019] This invention is easy to use because the rope 5 can be easily attached to the loop using the knot shown in Figure 2. It has a simple structure and is easy to manufacture. The rope is less likely to come off the invention due to wind, etc., but the knot can be easily released by moving the rope knot in the direction of the loop A1 to which the rope 5 is attached. This invention is characterized by the above. This invention may also be used with other knots. If the thicker part of the gripping section 3 is used, the length of the rope 5 will be shortened more efficiently, but the knot will be more difficult to release. [Explanation of symbols]
[0020] 1 Limb A 1a Ring connection point 2 limbus B 3 Gripping part 4. Rope passage section 5 ropes
Claims
1. An adjustment device for adjusting the length of a stretched rope midway, characterized in that it has two loops, one loop A having a portion of the first loop removed and the other loop B having a portion of the second loop removed, the ends of the loops A and B are connected at two connection points to form a closed shape, and the maximum width of the loops A and B on both sides parallel to the line connecting the two connection points at both ends of the loops A and B is greater than the width of the two connection points.
2. The rope length adjustment device according to claim 1, characterized in that the ring portion A and the ring portion B have a shape that includes part of a circle, an ellipse, or a polygon.
3. An adjustment tool for adjusting the length of a rope according to claim 1 or 2, wherein a gripping portion is provided on either the ring portion A or the ring portion B.