Coupler for construction engineering materials

Abstract

The present invention relates to a coupler for connecting a plurality of construction materials to each other, the coupler comprising: a cylindrical body in which a circular space is formed so as to be open to both sides, and in which a partition wall is formed in the center so as to divide both sides; a plug coupled to the open portions on both sides of the main body and formed in a form in which the inner diameter increases in the direction of the main body; a fixing body located inside the stopper, smoothly guided in a direction in which the material is inserted, and formed with a wedge portion so as to be capable of being caught in a direction in which the material is separated; and an elastic body located inside the main body and pushing the fixing body in the direction of the plug so as to improve the binding force between the fixing body and the material, the elastic body comprising: a ring-shaped support hoop supported on the inner side wall of the main body and the fixing body; and a plurality of inward bent portions formed at a distance from each other between the support hoops and bent inward in an arc shape so as to have elasticity in an inward direction.

Description

Technical Field

[0001] The present invention relates to a coupler for construction materials, and more specifically to a technology, which is a coupler having the function of connecting materials such as steel bars and pipes used in construction projects, which makes it easy to combine construction materials by improving the internal structure and is constructed into a strong structure so that even if external force is applied to the combined materials, they will not separate from the coupler. Background Art

[0002] Materials such as steel bars and pipes used in construction projects must be jointed and connected by couplers at the parts where the materials are connected. Of course, if the materials are connected by couplers like this, the materials will not separate easily.

[0003] The material fixing structure of this coupler adopts various methods. A well-known method is to have a wedge-shaped fixing device at the entrance of the coupler, and a spring is installed inside the fixing device to make the wedge part fit the material more closely by pushing the fixing device outward.

[0004] The springs installed in conventional couplers use coil springs that are wound in a spiral shape. However, this type of coil spring is compressed and then expanded during the coupling process. During this process, there are problems such as uneven spring tension, poor insertion of materials, poor fastening feeling, and a large amount of force required for insertion.

[0005] If the tension of the spring is reduced for smooth insertion, the wedge portion cannot be pushed properly, thereby easily causing the material to separate from the coupler.

[0006]

Prior technical literature

[0007] [Patent Literature]

[0008] (Patent Document 0001) Korean Patent Application No. 10-2018-0128005 (20181025) "Rebar Coupler and Method for Making the Same"

[0009] (Patent Document 0003) Korean Patent Application No. 10-2019-0020313 (20190221) "Method for manufacturing a steel bar coupler"

[0010] (Patent Document 0005) Korean Patent Application No. 10-2015-0172980 (20151207) "Coupler for steel bar and method for manufacturing the same" Summary of the invention

[0011] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a coupler for construction engineering materials. The spring inside the coupler is not composed of the commonly used coil form, but is composed of other forms of elastomers, thereby solving various problems occurring in coil-shaped springs. In addition, it does not rely on the power of the elastomer itself for fixing, but rather uses the inserted material to deform the elastomer together, while increasing the fixing force with the material, thereby improving the original function of the coupler.

[0012] The present invention is a coupler for connecting a plurality of construction materials to each other, characterized in that it comprises: a main body, which is formed in a cylindrical shape, and has a circular space portion formed inside in a form open to both sides, and a partition wall is formed in the center to divide the two sides; a plug, which is combined with the open parts on both sides of the main body, and is formed in a form in which the inner diameter expands more toward the main body; a fixed body, which is located inside the plug and smoothly guides the material in the direction of insertion, and is formed with a wedge portion so that it can be stuck in the direction of material separation; an elastic body, which is located inside the main body and pushes the fixed body in the direction of the plug, thereby improving the bonding force between the fixed body and the material, the elastic body comprising: a ring-shaped support hoop, which is supported by the inner side wall of the main body and the fixed body; a plurality of inward bending portions, which are formed in the form of a spaced distance between the support hoops, and are bent inwardly in a circular arc shape so as to have elasticity along the inner direction, and the inner width D of the central portion of the inward bending portion is formed to be narrower than the outer diameter P of the material, and when the material is inserted, the inward bending portion becomes a structure that expands outward.

[0013] In addition, the present invention is characterized in that the main body and the plug are coupled to each other by being screwed together.

[0014] In addition, the invention is characterized in that a cutout portion is formed on one side of the fixing body and the elastic body relative to the entire insertion direction of the material, and the fixing body and the elastic body are configured to be elastically expanded or contracted inwardly or outwardly.

[0015] In addition, the present invention is characterized in that the fixing body and the elastic body are integrally formed into one component by injection molding.

[0016] The present invention does not use the conventional coil-shaped spring, but forms an inwardly curved portion between the supporting hoops that bends inwardly in a circular arc shape to increase the bonding strength between the material and the fixed body, thereby facilitating material insertion and providing an excellent structural advantage in terms of the coupler's tight connection feel.

[0017] In addition, the inner width D of the center portion of the inward curved portion of the present invention is formed to be narrower than the outer diameter P of the material, so that when the material is inserted, the inward curved portion becomes a structure that expands outward and pushes the fixing body further toward the plug side, thereby having the effect of the wedge portion fixing the material with a stronger force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view showing the internal structure of the coupler for construction materials of the present invention.

[0019] Figure 2 This is an exploded view showing the main components of the construction material coupler of the present invention.

[0020] Figure 3 is a perspective view showing a fixing body of a coupler according to the present invention.

[0021] Figure 4 is a perspective view showing an elastic body of a coupler according to the present invention.

[0022] Figure 5 This is a diagram showing an example of deformation of an elastic body by inserting a material into the coupler in the present invention.

[0023] Figure 6 This is a diagram showing an embodiment in which a fixed body and an elastic body constituting the coupler of the present invention are formed in an integral form.

[0024] Figure 7 FIG. 1 is a diagram showing another embodiment in which a buffer pad is incorporated into the coupler of the present invention.

[0025] Description of symbols

[0026] 1: Materials

[0027] D: The inner width of the center of the inward curved part

[0028] P: outer diameter of the material

[0029] 100: Main body

[0030] 110: Next door

[0031] 120: Placement slot

[0032] 200: Stopper

[0033] 300: Fixed body

[0034] 310: Wedge

[0035] 400: Elastomer

[0036] 410: Support hoop

[0037] 420: Inward bend

[0038] 300a, 400a: Cutting part

[0039] 500: cushion DETAILED DESCRIPTION

[0040] Hereinafter, with reference to the accompanying drawings, the preferred embodiments of the present invention are described in detail as follows. In addition, when describing the present invention, if it is considered that the specific description of the related known functions or structures may obscure the gist of the present invention, the detailed description thereof will be omitted.

[0041] The present invention relates to a coupler technology for connecting a plurality of construction engineering materials to each other, the main components of which are as follows Figure 1 to Figure 2 As shown, it includes: a main body 100, which is formed in a cylindrical shape, and has a circular space portion formed inside in a form open to both sides, and a partition wall 110 is formed in the center to divide the two sides; a plug 200, which is combined with the open parts on both sides of the main body 100, and is formed in a form in which the inner diameter expands toward the main body 100; a fixing body 300, which is located inside the plug 200 and smoothly guides the material insertion direction, and is formed with a wedge portion 310 so that it can be stuck in the direction of material separation; an elastic body 400, which is located inside the main body 100 and pushes the fixing body 300 toward the plug 200, thereby improving the bonding force between the fixing body 300 and the material.

[0042] In addition, it is characterized in that the elastomer 400 includes: a ring-shaped support hoop 410, which is supported by the inner wall of the main body 100 and the fixed body 300; a plurality of inward bending portions 420 are formed in the form of a spaced-apart relationship between the support hoop 410, and are bent inwardly in an arc shape so as to have elasticity along the inner direction, and an inner width D of the center portion of the inward bending portion 420 is formed to be narrower than the outer diameter P of the material, and when the material is inserted, the inward bending portion 420 becomes a structure that expands outwardly.

[0043] Although a general coupler generates a fixing force only by pushing the wedge portion 310 through the elasticity of the spring itself, the present invention generates a strong fixing force not only by the elastic force of the elastic body 400 itself, but also by forcibly pushing the fixing body 300 while the elastic body 400 is deformed by the inserted material.

[0044] Hereinafter, each structure of the present invention will be described in detail with reference to the drawings.

[0045] As shown in the figure, the main body 100 of the present invention is formed in a cylindrical shape, and a partition wall 110 is formed in the center to divide the two sides, and the space is open to both sides. The elastic body 400 is inserted into the open two sides and is located inside the main body 100.

[0046] In addition, the plug 200 is combined with the open portions of the main body 100. The plug 200 is combined with the main body 100 by being screwed together, and before the plug 200 is combined, the elastic body 400 is first placed, and the plug 200 is combined in a state where the fixing body 300 is located inside the plug 200, so that the elastic body 400 and the fixing body 300 are located inside.

[0047] In addition, a hole is formed through the center of the plug 200 so that the material can be smoothly inserted until it is located inside the main body 100. At this time, the inserted material has a placement groove 120 formed in the partition wall 110 with a size that matches the outer diameter of the material so that it can be stably inserted into the inside of the main body 100. The placement groove 120 has the function of holding the material in the center of the coupler and preventing it from shaking, and the placement groove 120 itself is not sufficient to fix the material.

[0048] The fixing body 300 of the present invention is located inside the plug 200. Figure 3 As shown, a wedge portion 310 is formed inside. The wedge portion 310 has a structure that smoothly guides in the direction of inserting the material and can be stuck in the direction of separating the material.

[0049] In addition, the elastic body 400 of the present invention is located inside the main body 100, pushing the fixing body 300 from the inside to the outside (toward the plug 200), so that the fixing body 300 and the material are more firmly combined, thereby preventing the material from separating.

[0050] The elastic body 400 is composed of Figure 4 As shown, it includes: a ring-shaped support hoop 410, which is supported by the inner wall of the main body 100 and the fixed body 300; a plurality of inward bending parts 420 are formed in the form of spaced distances between the support hoop 410, and are bent inwardly in an arc shape so as to have elasticity along the inner direction.

[0051] One side of the support hoop 410 is supported by the end portion of the inner wall of the main body 100, and the other side is supported by the fixing body 300, and the interval of the support hoop 410 is determined according to the deformation of the inward bending portion 420. In other words, when the inward bending portion 420 is further bent inward, the interval of the support hoop 410 becomes narrower, and when the inward bending portion 420 is deformed to a state of being expanded outward, the interval of the support hoop 410 becomes further widened. The position of the fixing body 300 changes according to the interval of the support hoop 410, and the fixing force of the wedge portion 310 also changes.

[0052] In addition, the core of the present invention is that the inner width D of the center portion corresponding to the narrowest portion of the inward curved portion 420 is formed to be narrower than the outer diameter P of the material, and when the material is inserted, as shown in FIG. Figure 5 As shown, the inward curved portion 420 is expanded outward and pushes the fixing body 300 further toward the plug 200. In other words, since the interval of the support hoop 410 is further widened, the fixing body 300 is further pushed toward the plug 200 and the wedge portion 310 of the fixing body 300 fixes the material with a strong force.

[0053] As described above, since the inward curved portion 420 of the present invention is formed to surround the inserted material, it plays a role in stably inserting the material and supporting the inserted material so that it does not shake. In addition, since it is not inserted in a manner of compressing the spring as in the past, the material is easily inserted, and the tight connection feeling of the coupler also has an excellent structural advantage.

[0054] In addition, on one side of the fixing body 300 and the elastic body 400 of the present invention, Figure 3 and Figure 4 As shown, the cutouts 300a and 400a are formed relative to the entire insertion direction of the material, and the fixing body 300 and the elastic body 400 are configured in a form that is elastically expanded or contracted inwardly or outwardly. As described above, when the cutouts 300a and 400a are formed in the fixing body 300 and the elastic body 400, the adhesion between the accessories inside the main body 100 and the plug 200 can be further improved, and the fixing body 300 can move along the inner surface of the plug 200 while maximizing the fixing force, and the elastic body 400 can prevent damage caused by deformation and more easily exert elasticity.

[0055] Figure 6 Another embodiment of the present invention is shown, in which the fixed body 300 and the elastic body 400 are integrally formed into one part by injection molding. When the fixed body 300 and the elastic body 400 are integrally formed and constituted as one part, the convenience of assembly can be improved, and the productivity of the product can be greatly improved.

[0056] in addition, Figure 7 Another embodiment of the present invention is shown, when a cushion pad 500 made of rubber or silicone material is additionally coupled to the receiving groove 120 of the main body 100, the noise of the material hitting the partition wall 110 during the insertion process can be reduced and the coupling shock can be reduced.

[0057] Although the present invention has been described above with reference to the above-mentioned embodiments, it is obvious that many modifications can be made within the scope of the technical concept of the present invention.

Claims

1. A coupler for construction materials, as a coupler for connecting a plurality of construction materials to each other, characterized in that: include: The main body (100) is formed in a cylindrical shape, and has a circular space portion formed inside in a state of being open to both sides, and a partition wall (110) is formed in the center to divide the two sides; A plug (200) is coupled to the open portions on both sides of the main body (100) and is formed in a shape in which the inner diameter expands toward the main body (100); A fixing body (300) is located inside the plug (200) and smoothly guides the material in the direction of insertion, and is formed with a wedge portion (310) so as to be able to be stuck in the direction of material separation; The elastic body (400) is located inside the main body (100) and pushes the fixing body (300) toward the plug (200), thereby improving the bonding force between the fixing body (300) and the material. The elastic body (400) comprises: A ring-shaped support hoop (410) supported by the inner side wall of the main body (100) and the fixed body (300); A plurality of inwardly curved portions (420) are formed between the support hoop (410) at intervals and are curved inwardly in an arc shape so as to have elasticity in the inner direction. The inner width (D) of the center portion of the inward curved portion (420) is formed to be narrower than the outer diameter (P) of the material, and when the material is inserted, the inward curved portion (420) becomes a structure that expands outward.

2. The construction material coupler according to claim 1, characterized in that: The body (100) and the plug (200) are coupled to each other by being screwed together.

3. The construction material coupler according to claim 1, characterized in that: Cutouts (300a) and (400a) are formed on one side of the fixing body (300) and the elastic body (400) relative to the entire insertion direction of the material. The fixing body (300) and the elastic body (400) are configured to be elastically expanded or contracted inwardly or outwardly.

4. The construction material coupler according to claim 1, characterized in that: The fixing body (300) and the elastic body (400) are integrally formed into one component by injection molding.

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