Profile connection device

Abstract

One aspect of the present invention provides a profile connection device comprising: a first coupling member which comprises a first receiving part formed of a pair of plates facing each other, a first connection part formed of a plate connecting one end of the first receiving part, and a first fastening part protruding from one surface of the first connection part opposite to the first receiving part; a second coupling member which comprises a second receiving part formed of a pair of plates facing each other, a second connection part formed of a plate connecting one end of the second receiving part, and a second fastening part protruding from one surface of the second connection part opposite to the second receiving part; and a first connection member formed of a coil spring that is coupled to the first and second fastening parts to connect the first and second coupling members to each other, wherein the outer circumferential surfaces of the first and second coupling fastening parts are coupled to the inner circumferential surfaces of one end and the other end of the coil spring, respectively.

Description

Profile connector

[0001] The present invention relates to a profile connecting device, and more specifically, to a profile connecting device that can effectively buffer external force applied to a floating solar power generation facility for a long period of time, can be easily connected, and can reduce the cost required for manufacturing.

[0002] A solar power plant is a collection of structures equipped with multiple solar modules connected in series or parallel. These solar power plants are typically installed on land, which requires significant land acquisition and construction costs. Furthermore, they often require the use of hillsides, which can be detrimental to the environment. Furthermore, when installed on land, the solar modules heat up during the summer due to geothermal heat, hindering their effective cooling, which reduces their power generation efficiency.

[0003] To address these issues, floating solar power systems are being developed, which install solar modules on water surfaces such as lakes, rivers, ponds, dams, and oceans. These floating solar power systems utilize multiple floating structures, each equipped with multiple solar modules, placed on the surface of the water along with buoys.

[0004] The above floating structures must be firmly connected and fastened to each other. The above floating structure may include a main buoyancy body for fixing solar modules that floats on the water surface while fixing the solar modules, and, if necessary, may further include an auxiliary buoyancy body installed on the water surface to supplement the buoyancy of the main buoyancy body and allow workers to move around the solar modules. In this case, adjacent individual buoyancy bodies and / or unit units including two or more buoyancy bodies may be directly connected to each other, or may be connected and fastened to each other by a connecting member for interconnecting support members, such as profiles, fixed on the buoyancy bodies.

[0005] When such floating solar power generation systems are applied to the sea, the load applied to the buoyancy body supporting the solar modules may increase relatively significantly depending on climate change, wave strength, height, etc., compared to when applied to fresh water such as lakes and reservoirs, and accordingly, there is a risk that the buoyancy body, which is usually made of plastic or synthetic resin, may be broken or damaged by external impacts such as waves, and when the buoyancy body is significantly broken, the buoyancy and support provided to the solar modules may be lost, causing the solar modules to be submerged.

[0006] A method of connecting unit units including two or more buoyant bodies using a simple connecting member in the form of a conventional single rod has been proposed, but this type of connecting member has the problem of being easily broken because it cannot accommodate relative vertical displacement, horizontal displacement, and rotational displacement between unit units that inevitably occur due to external forces such as waves and wind.

[0007] Korean Patent Registration Nos. 10-1929428 and 10-2255890 disclose a bracket for connecting unit units that can actively accommodate relative vertical displacement, horizontal displacement, and rotational displacement between unit units, and can alleviate, absorb, and block shock transmitted between unit units to reduce accumulated fatigue load.

[0008] However, the coil spring here is essentially a compression spring, and while such a compression spring can appropriately respond to pressure among external forces applied to adjacent units, it is difficult to respond to tension, and since the compression spring allows a certain pitch or lead, the guide pins, etc. provided inside the compression spring are exposed to the outside, and thus the guide pins, etc. can easily be corroded or damaged by moisture, salt, etc.

[0009] In addition, since the connection between two adjacent brackets depends only on separate members such as bolts and coil springs interposed therebetween, and in particular, since both ends of the coil springs are simply inserted into low-friction members made of polypropylene material and connected to the brackets, if unnecessary play occurs between the coil springs and the low-friction members or the low-friction members are damaged, the two unit units connected to each bracket are completely separated, and if the irregular floating or mooring state of the separated unit units continues, the separated unit units must be relocated and rearranged to their original positions before repairing or replacing the bolts, coil springs, etc., so there is a problem of reduced maintainability.

[0010] The present invention is intended to solve the problems of the prior art described above, and the purpose of the present invention is to provide a profile connecting member and a connecting structure including the same, which can effectively buffer external force applied to a floating solar power generation facility for a long period of time, can be easily connected, can reduce the cost required for manufacturing, and can improve maintainability.

[0011] One aspect of the present invention provides a profile connecting device, comprising: a first connecting member including a first receiving portion formed of a pair of mutually opposing plates, a first connecting portion formed of a plate connecting one end of the first receiving portion, and a first fastening portion protruding from one side of the first connecting portion on the opposite side of the first receiving portion; a second connecting member including a second receiving portion formed of a pair of mutually opposing plates, a second connecting portion formed of a plate connecting one end of the second receiving portion, and a second fastening portion protruding from one side of the second connecting portion on the opposite side of the second receiving portion; and a first connecting member formed of a coil spring connected to the first and second connecting portions to interconnect the first and second connecting members, wherein outer peripheral surfaces of the first and second connecting portions are connected to one end and inner peripheral surfaces of the other end of the coil spring, respectively.

[0012] In one embodiment, the coil spring may be a tension spring.

[0013] In one embodiment, the inner diameter of the tension spring may be reduced by the tensile behavior of the tension spring, thereby strengthening the connection between the first and second fastening portions and the tension spring.

[0014] In one embodiment, the first and second connecting portions include first and second connecting holes, respectively, and the first and second fastening portions are cylinders formed with both ends open coaxially with the first and second connecting holes, respectively, and further include a second connecting member connecting the first and second coupling members along the inside of the coil spring, and one end and the other end of the second connecting member can be installed to penetrate the inside of the cylinder and the first and second connecting holes, respectively.

[0015] In one embodiment, the second connecting member may include one selected from the group consisting of a chain, a pin, a rod, a bar, a pipe, and a combination of two or more thereof.

[0016] In one embodiment, the second connecting member further includes first and second catch portions formed at one end and the other end, and at least one of the first and second catch portions is formed by leaving a predetermined gap with at least one of the inner surfaces of the first and second connecting members while the tension spring maintains a circular shape, and the gap can limit the tensile behavior of the tension spring and the movement of the first and second joining members along the second connecting member to a predetermined range.

[0017] In one embodiment, the second connecting member may be made of one selected from the group consisting of metal, plastic, elastomer, rubber, and combinations of two or more thereof.

[0018] In one embodiment, the coil spring may include a compression spring and a tension spring extending from both ends of the compression spring.

[0019] In one embodiment, at least a portion of the inner surface of the tension spring may be coupled to the outer surface of the first and second fastening portions.

[0020] In one embodiment, the inner diameter of the tension spring may be reduced by the tensile behavior of the tension spring, thereby strengthening the connection between the first and second fastening portions and the tension spring.

[0021] A profile connecting device according to one aspect of the present invention comprises: a first connecting member including a first receiving portion made of a pair of mutually opposing plates, a first connecting portion made of a plate connecting one end of the first receiving portion, and a first fastening portion protruding from one side of the first connecting portion opposite the first receiving portion; a second connecting member including a second receiving portion made of a pair of mutually opposing plates, a second connecting portion made of a plate connecting one end of the second receiving portion, and a second fastening portion protruding from one side of the second connecting portion opposite the second receiving portion; And a first connecting member formed of a coil spring that is connected to the first and second connecting members and interconnects the first and second connecting members; wherein the outer peripheral surfaces of the first and second connecting members are connected to the inner peripheral surfaces of one end and the other end of the coil spring, respectively, so that the external force applied to the floating solar power generation facility can be effectively buffered for a long period of time, the facility can be easily connected, the cost required for manufacturing can be reduced, and the maintainability can be improved.

[0022] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0023] FIG. 1 is a perspective view of a profile connecting device according to one embodiment of the present invention.

[0024] FIG. 2 is a perspective view (FIG. 2(a)) and a plan view (a plan view viewed from the AA' direction of FIG. 2(a)) of a first joining member (or a second joining member) according to one embodiment of the present invention.

[0025] Figure 3 is a cross-sectional view showing the tensile behavior of a tensile spring according to one embodiment of the present invention.

[0026] Figure 4 is a front view of a profile connecting device according to one embodiment of the present invention.

[0027] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0028] Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with other elements intervening. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that the other components may be included, unless otherwise specifically stated.

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0030] Fig. 1 is a perspective view of a profile connecting device according to one embodiment of the present invention, and Fig. 2 is a perspective view and a plan view of a first connecting member (100) (or a second connecting member, 200) according to one embodiment of the present invention. Referring to Figs. 1 and 2, a profile connecting device according to one aspect of the present invention includes a first connecting member (100) including a first receiving portion (110) formed of a pair of mutually opposing plates, a first connecting portion (120) formed of a plate connecting one end of the first receiving portion (110), and a first fastening portion (130) protruding from one side of the first connecting portion (120) opposite to the first receiving portion (110); It may include a second connecting member (200) including a second receiving portion made of a pair of mutually opposing plates, a second connecting portion made of a plate connecting one end of the second receiving portion, and a second fastening portion protruding from one side of the second connecting portion opposite to the second receiving portion; and a first connecting member (300) made of a coil spring that is connected to the first and second fastening portions to interconnect the first and second connecting members (100, 200).

[0031] The term "profile" as used herein means a bar-shaped and / or tubular member having a predetermined aspect ratio (ratio of diameter to length (D / L) or ratio of cross-sectional area to length (A / L)), and may be interpreted to include frames, pipes, rods, shaped steel, steel pipes, etc. The profiles may be classified, for example, into C-shaped steel, H-shaped steel, I-shaped steel, L-shaped steel, square pipes, etc., depending on the shape of their cross-sections, and may be classified into solid and hollow types depending on whether or not empty space is allowed inside them.

[0032] The first connecting member (100) may include a first receiving portion (110) formed of a pair of mutually opposing plates, a first connecting portion (120) formed of a plate connecting one end of the first receiving portion (110), and a first fastening portion (130) protruding from one side of the first connecting portion (120) opposite to the first receiving portion (110).

[0033] The first receiving portion (110) may be formed of plates spaced apart from each other at a predetermined interval. When the first receiving portion (110) receives an end portion of a profile, the interval may be determined according to the thickness and / or width of the profile.

[0034] The first connecting portion (120) may be formed of a plate connecting one end of the first receiving portion (110). The first connecting portion (120) may extend from an end of the first receiving portion (110) to close the end of the first receiving portion (110). The first connecting portion (120) may be formed by bending the plate forming the first receiving portion (110) along a predetermined bending line at a preset angle, for example, 80 to 120°, preferably 90 to 100°, more preferably 90°.

[0035] Among the first connecting member (100), the first receiving portion (110) and the first connecting portion (120) may be formed by bending a single plate, preferably a metal plate, and may be formed as a single body. The thickness of the plate may be 1 to 5 mm, preferably 2 to 4 mm, but is not limited thereto.

[0036] The first fastening portion (130) may be formed by protruding from one side of the first connecting portion (120) opposite the first receiving portion (110). The first fastening portion (130) may be formed by protruding from one side of the first connecting portion (120) opposite the first receiving portion (110) in a vertical direction to a preset height (or length), such as a cylinder, a cylindrical cylinder, a pipe, or the like, and the outer surface thereof may be a smooth surface or, if necessary, a rough surface including screw threads of a preset standard.

[0037] The first connecting portion (120) and the first fastening portion (130) may be integrally joined to each other by welding or the like, or may be integrally cast using a predetermined mold (formwork or mold). In addition, the first receiving portion (110), the first connecting portion (120), and the first fastening portion (130) may be integrally cast using a predetermined mold (formwork or mold).

[0038] The second connecting member (200) may include a second receiving portion made of a pair of mutually opposing plates, a second connecting portion made of a plate connecting one end of the second receiving portion, and a second fastening portion protruding from one side of the second connecting portion opposite to the second receiving portion.

[0039] In the above profile connecting device, the specifications of the first and second connecting members (100, 200) may be the same, and the positional relationship, shape, structure, etc. are symmetrical with respect to the first connecting member (300), so the structural and mechanical characteristics of the second connecting member (200) and its lower components, the second receiving portion, the second connecting portion, and the second fastening portion, are the same as those described above for the first connecting member (100) and its lower components, the first receiving portion (110), the first connecting portion (120), and the first fastening portion (130).

[0040] The above first connecting member (300) may be formed of a coil spring that is connected to the first and second fastening parts to interconnect the first and second connecting members (100, 200).

[0041] Fig. 3 is a cross-sectional view showing the tensile behavior of a tensile spring according to one embodiment of the present invention. Referring to Figs. 2 and 3, the outer peripheral surfaces of the first and second fastening portions can be joined to the inner peripheral surfaces of one end and the other end of the coil spring.

[0042] The inner diameters of one end and the other end of the coil spring may have specifications greater than or equal to the outer diameters of the first and second fastening portions, respectively, and the one end and the other end of the coil spring may receive and fix the first and second fastening portions, respectively. Such receiving and fixing may be accomplished by fitting or inserting the first and second fastening portions into one end and the other end of the coil spring, respectively, and then pressing the one end and the other end of the coil spring in the direction of the central axis.

[0043] The above coil spring may be a tension spring. The above tension spring is a coil spring designed to resist extension or tensile loads, and is elongated and deformed by an extension or tensile load applied to both ends below a critical point, and can be compressed and restored when the load is weakened or eliminated.

[0044] The above tensile spring can be manufactured by winding metal and / or plastic wires, etc. along a helically direction. The specifications of the above tensile spring, the material diameter, the distance between adjacent materials (wires, etc.) along the central axis, the elastic modulus, etc. can be adjusted and designed so that the extensional deformation and compression recovery of the above tensile spring are relatively superior to the compression deformation and extensional recovery.

[0045] For example, the tension spring may be wound so that the materials (wires, wires, etc.) are tightly wound so that the distance between adjacent materials along the central axis is about 10 cm or less, preferably about 5 cm or less, more preferably about 3 cm or less, and advantageously, about 1 cm or less, and, if necessary, may be wound so that this distance is substantially eliminated to about 0.5 cm or less, preferably about 0.1 cm or less.

[0046] If the above coil spring is made of only a compression spring, it can properly respond to a compressive load among the external forces applied to adjacent units, but it is difficult to respond to an extension or tensile load, and since the compression spring allows a certain pitch or lead, the part located inside the compression spring among the profile connecting devices is exposed to the outside, and thus can easily be corroded or damaged by moisture, salt, etc.

[0047] In this regard, since the tensile spring can be deformed by extension and bending within an allowable range, it can appropriately respond to an extension or tensile load among the external forces applied to adjacent units, and can convert at least a portion of the compressive load into a bending load in the axial direction to buffer it. In addition, when the material of the tensile spring is wound in close contact with each other, the outer surface of the first and second fastening portions among the first and second connecting members (100, 200), the space between the first and second connecting members (100, 200), and other members located therein are prevented from being exposed to the outside, thereby protecting them from moisture, salt, etc.

[0048] Referring to Fig. 3, the inner diameter of the tension spring may be reduced by the tensile behavior of the tension spring, thereby strengthening the connection between the first and second fasteners and the tension spring. The term "tensile behavior" used herein refers to a behavior in which the tension spring is extended and deformed in one direction and / or in both directions along the central axis by a predetermined tension, i.e., a tensile load, and in some cases, may refer to a behavior in which the tension spring is contracted and / or deformed in one direction and / or in both directions along the central axis when the tensile load is released.

[0049] Figures 3(a) and 3(b) are cross-sectional views of the tension spring in a state where the tension spring maintains its original shape and in a state where it is extended and deformed by a tensile load, respectively. In a state where the tension spring maintains its original shape, the tension spring may have a predetermined inner diameter (D1) and pitch (P1). The pitch of the tension spring refers to the length in the direction of the central axis of the tension spring between the central axis of the material wound in the cross-section including the central axis of the tension spring and the central axis of the immediately adjacent material, and is also used in a similar meaning to lead and pitch lead.

[0050] When the above-mentioned tension spring is extended and deformed by a predetermined tensile load, the pitch of the tension spring may increase to P2 and the inner diameter may decrease to D2. When a tensile load is applied to the tension spring while one end and the other end of the tension spring are respectively connected to the first and second fastening portions, the inner diameters of the one end and the other end of the tension spring may decrease, thereby strengthening the connection with the first and second fastening portions. The connection between the first and second fastening portions and the tension spring may be further strengthened as the tensile behavior of the tension spring is repeated.

[0051] Fig. 4 is a front view of a profile connecting device according to one embodiment of the present invention. Referring to Figs. 2 and 4, the first and second connecting portions (120) may include first and second connecting holes (121), respectively, and the first and second fastening portions may be cylinders formed with both ends open coaxially with the first and second connecting holes (121), respectively, and may further include a second connecting member (400) that connects the first and second coupling members (100, 200) along the inner side of the coil spring, and one end and the other end of the second connecting member (400) may be installed to penetrate the interior of the cylinder and the first and second connecting holes (121), respectively.

[0052] The first and second connecting holes (121) may be formed by punching a portion of the plate material constituting the first and second connecting portions (120), preferably the central portion, to a predetermined standard. Referring to the first connecting member (100), the first fastening portion (130) may be a cylinder formed with both ends open coaxially with the first connecting hole (121). Preferably, the cylinder may be formed by extending from the outer circumference or periphery of the first connecting hole (121) along the central axis of the first connecting hole (121) to a predetermined length or height. The outer circumference or periphery of the first connecting hole (121) and the cylinder may be integrally joined to each other by welding or the like, or may be integrally cast by a predetermined mold (formwork or die). Additionally, the first receiving portion (110), the first connecting portion (120), the first connecting hole (121), and the first fastening portion (130) may be cast as a whole using a predetermined mold (formwork or mold).

[0053] The second connecting member (400) can connect the first and second connecting members (100, 200) along the inner side of the coil spring. The first and second connecting holes (121) formed in the first and second connecting members (100, 200), respectively, and the internal space of the cylinder constituting the first and second fastening portions (130) can provide a space or path through which the second connecting member (400) can pass, and thus, one end and the other end of the second connecting member (400) can be connected to the first and second connecting members (100, 200), respectively.

[0054] The second connecting member (400) may include one selected from the group consisting of a chain, a pin, a rod, a bar, a pipe, and a combination of two or more thereof, and may preferably be formed of a member in the form of a pin and / or a rod, but is not limited thereto. When the second connecting member (400) is made of a pin and / or rod-shaped member, the first and second fastening members (100, 200) connected by the second connecting member (400) may move, for example, slide, along the central axis direction of the second connecting member (400) within a preset range when the coil spring (300) is subjected to extension and / or contraction deformation according to the tensile behavior, and the diameter of the second connecting member (400) may be less than or equal to the diameters of the first and second connecting holes (121). Preferably, the diameter of the second connecting member (400) may be designed to be smaller than the diameters of the first and second connecting holes (121) so that a predetermined clearance may be provided between the second connecting member (400) and the first and second connecting holes (121).

[0055] In addition, in order to prevent damage or breakage of the second connecting member (400) and the first and second connecting holes (121) due to repeated friction between them, at least one of the outer surface of the second connecting member (400) and the inner surface of the first and second connecting holes (121) may include a lubricating, corrosion-resistant, and chemical-resistant functional layer formed by coating, painting, lamination, or the like.

[0056] The second connecting member (400) may further include first and second catch portions (112, 112') formed at one end and the other end. At least one of the two ends of the second connecting member (400) may include a predetermined screw thread, and at least one of the first and second catch portions (112, 112') may be a nut fastened to the screw thread. Only one of the two ends of the second connecting member (400) may include a predetermined screw thread, and one of the first and second catch portions (112, 112') may be a nut fastened to the screw thread, and the other may be a bolt head formed integrally with the second connecting member (400).

[0057] The above second connecting member (400) may be made of one selected from the group consisting of metal, plastic, elastomer, rubber, and a combination of two or more thereof, preferably metal, but is not limited thereto.

[0058] At least one of the first and second catch portions (112, 112') is formed by leaving a predetermined gap (G) with at least one of the inner surfaces of the first and second connecting portions (120) while the tension spring (300) maintains its original shape, and the gap (G) can limit the tensile behavior of the tension spring (300) and the movement range of the first and second connecting members (100, 200) along the second connecting member (400) to a predetermined length, specifically, the length of the gap (G) among the entire length in the direction of the central axis of the second connecting member (400).

[0059] The above-mentioned clearance (G) limits the tensile behavior of the tensile spring (300) to the aforementioned range, thereby buffering external forces applied to adjacent units, specifically, extension (or tension), compression, rotation, and bending loads, and at the same time, preventing the tensile spring (300) from being damaged or broken even when an excessive tensile load is applied to the tensile spring (300). In addition, the diameters of the first and second catch portions (112, 112') can be designed to be larger than the diameters of the first and second connecting holes (121), thereby preventing the first and second connecting members (100, 200) from being separated from the second connecting member (400).

[0060] The first and second connecting members (100, 200) can be mutually connected by the first connecting member (300) connected to the first and second fastening portions, and the second connecting member (400) connected to the first and second connecting portions. That is, in the profile connecting device, the first and second connecting members (300, 400) are independently connected to the first and second connecting members (100, 200), respectively, so that when both are connected, a complementary and synergistic buffering effect can be implemented, and even if one of them is deformed or damaged, a minimum buffering effect can be maintained within a predetermined range.

[0061] The plates forming the first and second receiving portions may each include at least one pair, preferably at least two pairs, of first and second catch holes (111) provided at opposing positions while being spaced apart from each other by a predetermined interval. A member such as a bolt or rivet that mutually fixes or hinge-connects an end of a profile received in the first receiving portion (110) to the first connecting member (100) may be inserted through the first catch hole (111).

[0062] Meanwhile, if the coil spring is composed only of a tensile spring, at least a portion of the compressive load can be converted into a bending load in the axial direction to buffer it, but if a strong compressive load that is difficult to convert into a bending load is applied, or if a bending load is continuously applied, the durability of the tensile spring may be reduced.

[0063] Referring to Fig. 4, the coil spring may include a compression spring (Sc) and a tension spring (St) extending from both ends of the compression spring (Sc). The compression spring (Sc) is a coil spring designed to operate in the opposite direction to the tension spring (St), i.e., to resist a compressive load, and is compressed and deformed by a compressive load below a critical point applied to both ends, and can be restored to its original length when the load is weakened or eliminated.

[0064] The tension spring (St) provided at both ends of the coil spring and the compression spring (Sc) provided therebetween may be integrally formed by winding and processing a single wire, etc. At least a portion of the inner surface of the tension spring (St) provided at one end of the coil spring may be coupled to the first fastening portion (130) in the same manner as described above, and at least a portion of the inner surface of the tension spring (St) provided at the other end of the coil spring may be coupled to the second fastening portion in the same manner as described above.

[0065] The central portion of the coil spring may include the compression spring (Sc), and preferably, may include the compression spring (Sc) and the remaining portion of the tension spring (St) provided at both ends thereof but not involved in the connection with the first and second fastening portions (130).

[0066] In the case where the tension spring (St) among the coil springs is entirely involved in the connection with the first and second fastening portions, the buffering effect is implemented only by the compression spring (Sc) among the coil springs, so while it can appropriately respond to a compressive load among the external forces applied to adjacent units, it is difficult to respond to an extensional or tensile load, and since the part located inside the compression spring (Sc) among the profile connecting devices is exposed to the outside, it can easily be corroded or damaged by moisture, salt, etc.

[0067] The inner diameter of the tension spring (St) may be reduced by the tensile behavior of the tension spring (St) provided at both ends of the coil spring, thereby strengthening the coupling between the first and second fastening portions and the tension spring. Referring to Fig. 3, when the tension spring (St) is extended and deformed by a predetermined tensile load, the pitch of the tension spring (St) may increase to P2, while the inner diameter may be reduced to D2. When a tensile load is applied to the tension spring (St) while one end and the other end of the tension spring (St) are respectively coupled to the first and second fastening portions, the inner diameters of one end and the other end of the tension spring (St) may be reduced, thereby strengthening the coupling with the first and second fastening portions. The connection between the first and second fasteners and the tension spring (St) can be further strengthened as the tensile behavior of the tension spring (St) is repeated.

[0068] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0069] The scope of the present invention is indicated by the claims set forth below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0070] <Explanation of symbols>

[0071] 100: First connecting member

[0072] 110: 1st Reception Unit

[0073] 111: First Hanging Ball

[0074] 112, 112': 1st catch, 2nd catch

[0075] 120: First connector

[0076] 121: First connecting hole

[0077] 130: First fastening section

[0078] 131: Outer surface of the first fastening part

[0079] 200: Second connecting member

[0080] 300: First connecting member

[0081] Sc: Compression spring

[0082] St: Tension spring

[0083] 400: Second connecting member (pin)

[0084] G: Guerrilla

[0085] P1, P2: Pitch of tension spring

[0086] D1, D2: Inner diameter of tension spring

Claims

1. A first connecting member including a first receiving portion made of a pair of mutually opposing plates, a first connecting portion made of plates connecting one end of the first receiving portion, and a first fastening portion protruding from one side of the first connecting portion opposite to the first receiving portion; A second connecting member including a second receiving portion made of a pair of mutually opposing plates, a second connecting portion made of plates connecting one end of the second receiving portion, and a second fastening portion protruding from one side of the second connecting portion opposite to the second receiving portion; and A first connecting member comprising a coil spring that is connected to the first and second fastening members and interconnects the first and second connecting members; A profile connecting device in which the outer surfaces of the first and second fastening parts are connected to the inner surfaces of one end and the other end of the coil spring, respectively.

2. In paragraph 1, The above coil spring is a tension spring, profile connecting device.

3. In paragraph 2, A profile connecting device in which the inner diameter of the tension spring is reduced by the tensile behavior of the tension spring, thereby strengthening the connection between the first and second fastening parts and the tension spring.

4. In paragraph 3, The first and second connecting portions include first and second connecting holes, respectively, The first and second connecting portions are cylinders formed with both ends open coaxially with the first and second connecting holes, respectively. Further comprising a second connecting member connecting the first and second connecting members along the inner side of the coil spring, A profile connecting device in which one end and the other end of the second connecting member are installed through the inside of the cylinder and the first and second connecting holes, respectively.

5. In paragraph 4, A profile connecting device, wherein the second connecting member comprises one selected from the group consisting of a chain, a pin, a rod, a bar, a pipe, and a combination of two or more thereof.

6. In paragraph 5, The second connecting member further includes first and second hooking portions formed at one end and the other end, At least one of the first and second hooking portions is formed by leaving a preset gap with at least one of the inner surfaces of the first and second connecting portions while the tension spring maintains its original shape, A profile connecting device in which the above-mentioned clearance limits the tensile behavior of the tensile spring and the movement of the first and second connecting members along the second connecting member to a preset range.

7. In paragraph 5, A profile connecting device, wherein the second connecting member is made of one selected from the group consisting of metal, plastic, elastomer, rubber, and combinations of two or more thereof.

8. In paragraph 1, A profile connecting device, wherein the coil spring includes a compression spring and a tension spring extending from both ends of the compression spring.

9. In paragraph 8, A profile connecting device in which at least a portion of the inner surface of the above tension spring is joined to the outer surface of the first and second fastening portions.

10. In paragraph 8, A profile connecting device in which the inner diameter of the tension spring is reduced by the tensile behavior of the tension spring, thereby strengthening the connection between the first and second fastening parts and the tension spring.

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