Loop string fixing device and method for forming loop string fixing device

Abstract

To provide a loop string fixing device and a method for forming the loop string fixing device, the loop string fixing device including a stopper for fixing a loop string length-adjustably to a support body, such as a straight bar and a hook.SOLUTION: A loop string fixing device includes a stopper 20 used for fixing a loop string, where the string extends in a longitudinal direction and is curved at a middle portion to form a loop part. The string includes bifurcately extending first and second string extensions of the loop part, and first and second string end portions located at ends of the first and second string extensions. The stopper includes a front plate 21 that is formed with first and second through hole rows 22, 26 laterally spaced and extending in a height direction. Each of the first and second through hole rows includes upper through holes 23, 27 and lower through holes 24, 28 located below the upper through holes.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a loop string fastener, and more particularly to a loop string fastener including a stopper that fastens a loop string, which is formed by bending and arranging a string so that a loop is formed at one end, in a state in which the loop string is wound around a support, in an adjustable manner in length, and a method for forming the loop string fastener. [Background technology]

[0002] Fig. 1 is a diagram illustrating a known pull-up handle using a loop string. The pull-up handle is an auxiliary tool used, for example, when performing a pull-up exercise. Fig. 2 illustrates a configuration in which the pull-up handle is fixed to a straight bar.

[0003] A pull-up exercise is an exercise that improves the strength of a user's upper body. In general, a pull-up exercise is performed by holding a straight bar that is fixed at a certain height and lifting one's body weight.

[0004] When using a straight bar, it is possible to use an overhandle grip, where the back of the user's hand faces the user, or an underhandle grip, where the palm faces the user. When doing pull-ups, changing the grip angle can improve the effect of the exercise by changing the type and position of the muscles stimulated, but there is a limit to using a straight bar. Pull-up handles are useful for performing pull-ups in various grip positions.

[0005] In addition, the straight bar is generally provided in a fixed form at a predetermined height so that it can support the user's body weight, so if the position of the straight bar does not match the user's height, it can be difficult to perform pull-ups.

[0006] In this manner, the pull-up handle shown in FIG. 1 is used to help a user perform exercises suited to his / her height and muscle strength and to help perform a variety of exercises that can strengthen muscles.

[0007] Referring to FIG. 1, a pull-up handle 2 includes a loop string 3 in which a string S is arranged with a loop formed at the end, and handles 8 for gripping, to which both ends of the loop string 3 are fixed.

[0008] The loop string 3 refers to a string in which a loop is formed in the middle of a string (cord, rope, string, etc.) that extends in the length direction by bending and arranging the middle part. In this specification, the string with the loop formed is called the loop string 3, the part where the loop is formed located at one end of the loop string 3 is called the loop part 4, and the bifurcated ends of the loop string located on the opposite side of the loop part 4 are called the string ends 5 and 6.

[0009] Referring to FIG. 2, the order in which the pull-up handle 2 is fixed to the straight bar 1 is as follows.

[0010] First, the loop portion 4 of the loop string 3 is wrapped around the straight bar 1 so that the loop string 3 wraps around the straight bar 1.

[0011] Thereafter, the handle 8 is passed from under the straight bar 1 through the loop portion 4 and moved in the opposite direction, and then the handle 8 is pulled and tightened, whereby the pull-up handle 2 is fixed to the straight bar 1.

[0012] The form in which the loop string 3 is wrapped around the straight bar 1 and secured is called a Lark's Head Knot or a Tag Knot.

[0013] The name tag knot derives from the fact that tags on articles are primarily fastened in the form of such knots.

[0014] For pull-up exercise, two pull-up handles 2 are fixed to a straight bar 1. A user holds handles 8 of the pull-up handles 2 with his or her hands to perform an exercise such as a pull-up.

[0015] The pull-up handle can be used for various exercises other than pull-ups. For example, a person can lift a weight by attaching the pull-up handle to the hook of the weight. In addition, a person can hold the pull-up handle with both hands while touching the ground and supporting the body in an inclined position, and can pull up the upper body.

[0016] In this way, the pull-up handle is not limited to pull-up exercises, but can be used to perform a variety of exercises by fixing the loop string to an object such as a straight bar or weight, and can support a load.

[0017] This known method using a tag knot is the most common method for hanging and fixing a pull-up handle with a known loop string to a support, but since the length of the loop string cannot be adjusted, the height of the handle cannot be adjusted.

[0018] Therefore, when trying to perform exercise by attaching a pull-up handle to a support such as a straight bar or hook at a fixed height, there is a problem that the loop string must be changed according to the height of the user. Also, in order to remove the pull-up handle from the support, it is inconvenient that the loop part that is tied and fastened must be released and the handle must be pulled out further. Summary of the Invention [Problem to be solved by the invention]

[0019] The present invention has been devised to solve the above-mentioned problems, and has an object to provide a loop string fastener including a stopper for adjustably fastening the length of a loop string to a support such as a straight bar, hook, etc., and a method for forming the loop string fastener. [Means for solving the problem]

[0020] A loop string fastener according to an embodiment of the present invention is used to fasten a loop string in which an intermediate portion of a lengthwise extending string is bent to form a loop portion, and the loop portion has first and second string extensions extending into two branches, and first and second string ends located at the ends of the first and second string extensions. The loop string fastener includes a front plate having first and second rows of through holes formed spaced apart from each other on a side surface and extending in a height direction, and each of the first and second rows of through holes includes a stopper including an upper through hole and a lower through hole located below the upper through hole.

[0021] According to an embodiment of the present invention, each of the first and second rows of through holes forms a path along which each of the first and second string extensions extends, the upper through hole forms a path along which the first or second string extension passes from the back surface to the front surface, and the lower through hole forms a path along which the first or second string extension drawn from the front surface through the upper through hole passes from the front surface to the back surface. After the loop string is hung on the support, the loop portion is pulled toward the stopper and arranged to be located between the back surface of the front plate and the first and second string extensions that have passed through the lower through hole, and a knot is formed.

[0022] According to an embodiment of the present invention, the stopper includes side walls extending in the rear direction of the front plate so as to intersect with the front plate, and the side walls are formed to guide the loop portion to extend along the side walls without spreading out.

[0023] According to another embodiment of the present invention, a method for forming a loop string fastener includes the steps of: providing a stopper having a front plate with first and second rows of through holes formed on a side surface of the stopper and extending in a height direction, each of the first and second rows of through holes including an upper through hole and a lower through hole below the upper through hole; providing a loop string by bending an intermediate portion of a string extending in a length direction to form a loop portion, the loop string including first and second string extensions extending into two branches of the loop portion and first and second string ends located at ends of the first and second string extensions; and assembling the loop string and the stopper such that each of the first and second string extensions passes through the corresponding upper through hole from the rear side to the front side, and each of the first and second string extensions drawn out to the front side through the upper through hole passes through the corresponding lower through hole from the front side to the rear side, thereby providing a loop string fastener.

[0024] According to another embodiment of the present invention, the loop string fastener may form a knot in such a manner that the loop string is hung on a support and the loop portion is pulled toward the stopper, and the loop portion is arranged to be positioned between the rear surface of the front plate and the first and second string extensions that have passed through the lower through-hole.

[0025] According to another embodiment of the present invention, the stopper includes side walls extending in the rear direction of the front plate so as to intersect with the front plate, and the side walls are formed such that the loop portion extends along the side walls without spreading out. Effect of the Invention

[0026] In accordance with the present invention, the loop string may be secured to a support such as a straight bar, hook, or the like in a length adjustable manner. [Brief description of the drawings]

[0027] [Figure 1] 1 is a diagram illustrating a known pull-up handle that uses a loop string. [Diagram 2] 1 is a diagram illustrating a known pull-up handle fixed to a straight bar. [Diagram 3] 1A and 1B are front and rear perspective views of a stopper forming a loop string fastener according to an embodiment of the present invention; [Figure 4] 1A and 1B are front and rear perspective views of a stopper forming a loop string fastener according to an embodiment of the present invention; [Diagram 5] 4 is a view illustrating a state in which first and second string extensions are assembled to a stopper in a loop string fastener according to an embodiment of the present invention; [Figure 6] 1 is a diagram illustrating a loop string fastener according to an embodiment of the present invention, in which a loop portion forms a knot with a first and second string extension portion through a stopper and is fastened when the loop string is wound around a straight bar. [Figure 7] 1 is a diagram illustrating a loop string fastener according to an embodiment of the present invention, in which a loop portion forms a knot with a first and second string extension portion through a stopper and is fastened when the loop string is wound around a straight bar. [Figure 8] 1 is a diagram illustrating how the length of a loop string can be adjusted using the loop string fastener according to the present invention. [Figure 9] 1 illustrates an embodiment of a loop string fastener according to an embodiment of the present invention implemented in a swing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0029] Since the present invention can be modified in various ways and can have various forms, the embodiments will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, and it should be understood that the present invention includes all modifications, equivalents, and alternatives within the spirit and technical scope of the present invention. In describing each drawing, like reference numerals are used for like components.

[0030] The above terms are used only for the purpose of distinguishing one component from another. The terms used in this application are merely used to describe a particular embodiment and are not intended to limit the present invention. The singular expression includes the plural expression unless otherwise intended to be clearly different in the context.

[0031] Figures 3 and 4 are front and back perspective views of a stopper forming a loop string fastener according to an embodiment of the present invention, Figure 5 is a diagram illustrating a form in which the first and second string extensions are assembled to the stopper in the loop string fastener according to an embodiment of the present invention, and Figures 6 and 7 are diagrams illustrating a form in which the loop portion is fixed to the first and second string extensions through the stopper by forming knots with the loop string wound around a straight bar in the loop string fastener according to an embodiment of the present invention.

[0032] The loop string fastener 10 according to the present invention includes a stopper 20 for fastening a loop string, which is used to fasten the loop string 11 in an adjustable length manner.

[0033] The loop string 11 is arranged such that the middle portion of a string S extending in the longitudinal direction is curved to form a loop portion 12. The string S extending in two directions from the loop portion 12 is called the first and second string extension portions 15, 17, and the ends of the first and second string extension portions 15, 17 facing the loop portion 12 are called the first and second string end portions 14, 16.

[0034] 3 and 4, a stopper 20 for fixing a loop string according to an embodiment of the present invention includes a front plate 21 having a through hole formed therein, and side plates 32 and 34 extending from the rear side of the front plate 21 to intersect with the front plate 21.

[0035] The front plate 21 includes two rows of through holes 22, 26, and each row of through holes 22, 26 includes two through holes 23, 24, 27, 28. The through holes 23, 24, 27, 28 may be formed with circular holes.

[0036] Each row of through holes 22, 26 in the front plate 21 defines a path through which the first and second string extensions 15, 17 pass.

[0037] The side walls 32, 34 extend across the front plate 21 toward the rear side of the front plate 21. The side walls 32, 34 function to maintain the loop portion 12, which forms a knot with the first and second string extensions 15, 17, on the rear side of the front plate 21. This prevents the loop portion 12 from spreading and maintains contact with the first and second string extensions 15, 17. When tension is applied in this contact state, a pinching occurs that binds the string extensions and loop portions together by frictional forces. This pinching induces a jamming-like condition in which the knot between the loop portion and each string extension forms a knot that resists pulling forces at the string end side.

[0038] The assembly relationship between the loop string and the stopper in the loop string fixing device will be described with reference to FIG.

[0039] First and second string extensions 15, 17 branch off on either side of loop portion 12 and extend toward first and second string ends 14, 16, respectively.

[0040] The first string extension 15 extends through the first through-hole row 22 of the stopper 20. The first string extension 15 extending toward the first string end 14 extends to the back surface B of the front plate 21, is inserted into an upper through-hole 23 of the first through-hole row 22, and is pulled out to the front surface F of the front plate 21. Then, at the front surface F, it is inserted into a lower through-hole 24, and is pulled out to the back surface B of the front plate 21, continuing to extend.

[0041] The second string extension 17 extends through the second through-hole row 26. The second string extension 17 extending toward the second string end 16 extends to the back surface B of the front plate 21 and is inserted into an upper through-hole 27 of the second through-hole row 26 and pulled out to the front surface F of the front plate 21, and then is inserted into a lower through-hole 28 and extends downward toward the back surface B of the front plate 21.

[0042] The position of the stopper 20 can be adjusted by moving the position of the stopper 20 along the loop string 11. Since the loop portion 12 of the loop string 11 is fixed to the stopper 20 by the loop string fixing device 10, adjusting the position of the stopper 20 relative to the loop string 11 corresponds to adjusting the length of the loop string 11 wound around the support.

[0043] 6 and 7, a description will be given of a manner in which a knot is formed in the loop string fastener using a stopper as an intermediary, and the position of the loop string is fixed.

[0044] Referring to FIG. 6, the loop string 11 is hung on a support 100 such as a straight bar, and then the direction is changed. The loop portion 12 is then pulled to the position of the stopper 20. The loop portion 12 is then passed to the rear surface B of the stopper 20, and the loop string 11 is then pulled.

[0045] 7, as seen in enlarged portion A, the loop portion 12 is located between the rear surface B of the stopper 20 and the first and second string extensions 15, 17 which are pulled out through the lower through-holes 24, 28 and extend downward. At this time, downward tension acting on the first and second string extensions 15, 17 and upward tension acting on the loop portion 12 act to generate a tightening force that fixes the loop portion 12. In this specification, the fixing of the string through the stopper 20 as described above is referred to as a knot being formed. The knot seen in FIG. 7 is similar to the principle of forming a tag knot.

[0046] The side walls 32, 34 are positioned so that the first and second string extensions 15, 17 and the loop portion 12 form a clamped state when tension is applied to the loop string 11. As a result, the loop portion 12 extends upward along the back surface B of the stopper 20 while holding down the first and second string extensions 15, 17 without being spread by the side walls 32, 34.

[0047] 7, it can be seen that both strings of the loop portion 12 are pressed toward the side walls 32, 34 by the strings that pass through the through holes 23, 24, 27, 28. Without the side walls 32, 34, the loop portion 12 can expand after contacting the first and second string extensions 15, 17 that pass through the lower through holes 24, 28 from below. In this case, the fixing force for forming the knot may be weakened. However, when the loop portion 12 extends from the rear surface B of the stopper 20 while contacting the first and second string extensions 15, 17 due to the side walls 32, 34, jamming between the strings occurs, and the knot is fixed firmly.

[0048] 8 is for explaining how the length of a loop string is adjusted by the loop string fixing device according to the present invention. By adjusting the position of the stopper 20 in the loop string fixing device, the length of the loop string 11 located between the support 100 and the stopper 20 is changed. Since the loop string 11 overlaps between the support 100 and the stopper 20, changing the position of the stopper adjusts the position of the string end relative to the support 100. Since the position of the string end relative to the support 100 corresponds to the length of the loop string fixed to the support, the length of the loop string can be adjusted.

[0049] Reference is also made to Figures 6 and 7, which illustrate an embodiment in which a loop string fastener according to an embodiment of the present invention is implemented with a pull-up handle.

[0050] As shown in Figures 6 and 7, the first and second string ends 14, 16 are fixed to a bar 30, and by changing the position of the stopper 20, the fixed position of the loop portion 12 can be changed, thereby changing the position of the bar 30 relative to the support 100, i.e., its height relative to the ground.

[0051] FIG. 9 illustrates a swing implementation of a loop string fastener according to an embodiment of the present invention.

[0052] 9, two loop string fasteners 10a, 10b are provided and each of the loop string fasteners 10a, 10b is coupled to a side of a sheet 40. Both ends of the string of one loop string fastener 10a are coupled to one side of the sheet 40, and both ends of the string of the other loop string fastener 10b are coupled to the other side of the sheet 40.

[0053] The height of the seat 40 relative to the support 100 is adjusted by adjusting the overlap length of the loop strings 11 in each of the loop string fasteners 10a, 10b. In Fig. 9, it can be seen that two swings are arranged at different heights. In this way, by using the loop string fasteners, it is possible to adjust the height of the object supported by the loop string fasteners, in Fig. 9, the seat, relative to the support.

[0054] In another embodiment of the present invention, both ends of the strings can be connected to each other with a loop string fastener. This embodiment is another example of a pull-up aid using a loop string fastener, and the string has sufficient elasticity, so that the user can touch the loop string located at the bottom with their feet and perform pull-ups with the help of the elastic string. The user can adjust the length of the loop string according to the straight bar and their height.

[0055] Although the present invention has been described in detail through the representative embodiments, the scope of the present invention is not limited to the description and expression of the above-described embodiments. The scope of the present invention is not limited by obvious modifications or substitutions in the technical field to which the present invention belongs, and the scope of the present invention is determined not only by the claims below but also by equivalents to the claims.

Claims

1. The present invention relates to a loop string fastening device, which includes a stopper (20) used to fasten a loop string (11) having a loop portion (12) formed by bending an intermediate portion of a string extending in the length direction, first and second string extension portions (15, 17) extending in two directions from the loop portion (12), and first and second string end portions (14, 16) located at the ends of the first and second string extension portions (15, 17), The stopper (20) is The front plate (21) has first and second rows of through holes (22, 26) formed on its side surfaces and spaced apart from each other and extending in the height direction; A loop string fastener, wherein each of said first and second rows of through holes (22, 26) includes an upper through hole (23, 27) and a lower through hole (24, 28) located below said upper through hole (23, 27).

2. each of the first and second rows of through holes (22, 26) defining a path through which each of the first and second string extensions (15, 17) extends; the upper through holes (23, 27) form a passageway through which the first or second string extensions (15, 17) pass from the rear face (B) to the front face (F) of the front plate (21); The lower through-holes (24, 28) form a path through which the first or second string extension (15, 17) drawn out to the front surface (F) through the upper through-holes (23, 27) passes from the front surface (F) to the back surface (B); 2. The loop string fastener of claim 1, which can be used in a manner in which the loop string (11) is hung on a support (100) and the loop portion (12) is pulled toward the stopper (20) and arranged so that the loop portion (12) is located between the back surface (B) of the front plate (21) and first and second string extensions (15, 17) that have passed through the lower through holes (24, 28).

3. The stopper (20) includes two side walls (32, 34) extending in a direction toward the back surface (B) of the front plate (21) so as to intersect with the front plate (21), 3. The loop string fastener of claim 1 or 2, wherein the side walls (32, 34) are shaped such that the loop portion (12) extends along the side walls (32, 34) without spreading out.

4. providing a stopper (20) having a front plate (21) with first and second rows of through holes (22, 26) formed on a side surface thereof and spaced apart from each other and extending in a height direction, wherein each of the first and second rows of through holes (22, 26) includes an upper through hole (23, 27) and a lower through hole (24, 28) located below the upper through hole (23, 27); bending an intermediate portion of a lengthwise extending string to form a loop portion (12), providing a loop string (11) having first and second string extensions (15, 17) extending from the loop portion (12) at two bifurcations, and first and second string ends (14, 16) located at the ends of the first and second string extensions (15, 17); and assembling the loop string (11) and the stopper (20) to provide a loop string fastener (10) such that each of the first and second string extensions (15, 17) passes through the corresponding upper through-holes (23, 27) from the back surface (B) to the front surface (F), and each of the first and second string extensions (15, 17) brought out to the front surface (B) through the upper through-holes (23, 27) passes through the corresponding lower through-holes (24, 28) from the front surface (F) to the back surface (B).

5. 5. The method of claim 4, wherein the loop string fastener (10) can be used in a manner such that the loop string (11) is hung on a support (100) and the loop portion (12) is pulled toward the stopper (20) and arranged so that the loop portion (12) is located between the back surface (B) of the front plate (21) and the first and second string extensions (15, 17) that have passed through the lower through-holes (24, 28) to form a knot.

6. The stopper (20) includes two side walls (32, 34) extending in a direction toward the back surface (B) of the front plate (21) so as to intersect with the front plate (21), 6. The method of claim 4 or 5, wherein the side walls (32, 34) are formed such that the loop portion (12) extends along the side walls (32, 34) without spreading out.

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