KR20100109829A - Reinforcing rod coupler - Google Patents

Abstract

PURPOSE: A reinforcing bar coupler is provided to prevent disconnection due to high load by preventing damage to the end of a reinforcing bar inserted into the reinforcing bar coupler during assembly. CONSTITUTION: A reinforcing bar coupler comprises multiple fragments(200), a fixing member(300), a coupler main body(110), and a fastener(120). The fixing member is coupled with the multiple fragments. The coupler main bodies are coupled with each other by screws to fix a reinforcing bar(10) wherein the fragment and the fixing member are coupled. A female thread(121) is formed on the inner surface of the fastener to be coupled with a male thread(112) of the coupler main body.

Description

Reinforcing rod coupler}

The present invention relates to a reinforcing bar fittings, and more particularly, to a reinforcing bar connecting bars and reinforcing bars.

Reinforcing steel is used to reinforce concrete by burying it in concrete. There are two types of round rebar (SR) and five types of deformed reinforcing bars (SD). In the recent construction work, a lot of deformed reinforcing bars are used in which the surface is easily attached to the concrete, and the higher the node and the rib, the better the attachment.

In addition to the members for reinforcing concrete, such reinforcing bars are used in various fields such as supporting members embedded in soil and supporting structures, and supporting members for supporting other structures.

On the other hand, when the reinforcing bar is used to reinforce a structure such as a reinforcing material of concrete, the neighboring reinforcing bar is joined by welding or connected by a reinforcing bar.

However, the reinforcing bar connecting the reinforcing bar and rebar has the following problems.

First, the conventional reinforcing bar fittings to fix the end of the reinforcing bar damages the surface of the rebar, there is a problem to break even under a load less than the load required in the design.

In addition, the conventional reinforcing bar has a problem that the assembly is not easy to take the method of fixing the end of the reinforcing bar.

In addition, the conventional reinforcing bar has a problem that the initial deformation may occur due to the limitation of assembly when fixed to the end of the rebar.

In addition, the conventional reinforcing bar adopts the method of screwing after machining in the field or the process, but this method has no problem in cost when used in large quantities, but in case of a small amount, the construction cost is relatively high, and management and logistics costs are additionally required. There is this. In addition, in the field or process, after the threading process, the joint method has a limitation in reducing the amount of deformation during fatigue, as well as a problem that the fatigue strength is lowered.

In addition, when the field fastening type of conventional reinforcing bar fittings, there are a lot of accessories, which is cumbersome during construction, and there is a problem that requires the skill of the construction worker.

In addition, the conventional reinforcing bar is often the initial slip after assembly, there is a problem that the compatibility, such as the shape of the bar, whether or not to change the structure according to the type of reinforcing bars.

In addition, the conventional reinforcing bar damages a part of the reinforcing bar after assembly, there is a problem that the specified yield, tensile strength of the rebar is lowered.

In particular, the conventional reinforcing bar fittings are damaged by pressing the outer surface of the reinforcing end of the reinforcing bar, there is a problem that the specified yield, tensile strength of the rebar is lowered due to the damage of the outer surface.

It is an object of the present invention to provide a reinforcing bar fitting without break even at high loads so as not to cause damage to the end of the reinforcing bar inserted into the reinforcing bar fitting during assembly to solve the above problems.

Another object of the present invention is to provide a reinforcing bar fitting having a structure that is easy to assemble.

Another object of the present invention is to provide a reinforcing bar fitting does not occur after the initial deformation.

The present invention was created in order to achieve the object of the present invention as described above, the present invention comprises a plurality of pieces pieces arranged in the circumferential direction to form a cylindrical insertion space into which the end of the reinforcing bar is inserted; A fixing member for fixing one end of the pieces so that the pieces form the insertion space; A joint body having a male screw portion formed on an outer circumferential surface thereof and into which at least a portion of the fixing member and the pieces are inserted; Disclosed is a reinforcing bar including a fastening part in which a female screw part is formed on an inner circumferential surface to be coupled to a male screw part of the joint body, and the fixing member and the remaining part of the pieces are inserted.

The piece piece is formed with a first inclined surface that is at least a portion of the outer peripheral surface of the portion inserted into the joint body, and a second inclined surface that is at least a portion of the outer peripheral surface of the portion inserted into the fastening portion, the end portion of the inner peripheral surface of the joint body A first corresponding inclined surface corresponding to the first inclined surface is formed, and a second corresponding inclined surface corresponding to the second inclined surface is formed on the inner circumferential surface of the tightening part, and the first inclined surface is the virtual line when the longitudinal direction of the reinforcing bar is the virtual line. The first inclination angle formed with the imaginary line may be smaller than the second inclination angle formed with the imaginary line.

The first inclined surface and the second inclined surface may be formed at each end of the piece piece.

The fixing member may include a body portion and a coupling ring portion which is formed to fit into a coupling recess formed on an outer circumferential surface of the piece and is integrally connected by the body portion and a bridge.

The bridge may connect the coupling ring portion and the body portion at a position corresponding to the width of the pieces.

The bridge may further be formed to protrude from the coupling ring portion, and at least some of the outer circumferential surface of the bridge may protrude more than the first inclined surface.

The body portion has a cylindrical shape, a support portion for supporting the end of the inner peripheral surface of the pieces may be further formed.

The fixing member may have a plastic material and may be integrally coupled with the pieces by injection.

A plurality of threads may be formed on the inner circumferential surface of the pieces.

At least some of the threads may have a forward screw structure having the same inclination angle in both the front and the rear in the longitudinal direction of the pieces.

The pieces may further have a third inclined surface having an inclination angle greater than the second inclined angle at an end portion of the second inclined surface.

The bridge may be further formed recessed recessed portion, the recessed portion may be formed to have an inner diameter corresponding to the distance from the center of the reinforcement to the outermost diameter.

The reinforcing bar according to the present invention has an advantage that the end of the reinforcing bar is prevented from being damaged by forming a double angle in the longitudinal direction of the reinforcing bar into which the end of the reinforcing bar is inserted.

Reinforcing bar joint according to the present invention comprises a female part is formed on the inner circumferential surface and the end portion of the reinforcing bar is inserted, the joint portion and the plurality of pieces inserted into the joint portion and the fastening portion so as to be coupled to the joint body formed with a male thread on the outer peripheral surface, Since the inclination angle of the pieces inserted into the joint body is smaller than the inclination angle of the parts inserted into the tightening part, the frictional force between the tightening part and the piece piece is smaller than the friction force between the joint body and the piece piece, so it can be assembled by the rotation of the tightening part during assembly. This makes it easy to assemble.

In addition, the reinforcing bar according to the present invention has the advantage that does not occur that can minimize the initial deformation after assembly by minimizing the sliding of the reinforcing bar by forming the same positive screw portion in the longitudinal direction on the inner peripheral surface of the pieces in contact with the outer surface of the rebar .

In addition, the reinforcing bar according to the present invention has the advantage that the initial slip due to the tensile force applied to the reinforcing bar by increasing the inclination angle of the tightening part and the piece in the tightening part withstanding the tensile force applied to the reinforcing bar after assembly.

In addition, the reinforcing bar according to the present invention has the advantage that the pieces can be prevented from tilting by increasing the length of the bridge formed between the plurality of pieces in the fixing member assembled with the plurality of pieces.

In addition, the reinforcing bar according to the present invention has the advantage that can be applied to both the recognition and compression of the reinforcing bars in the fixing process of the rebar by forming the first inclined surface and the second inclined surface on the portion corresponding to the joint and the main body in the plurality of pieces There is this.

In addition, the reinforcing bar fitting according to the present invention has a simple structure, the manufacturing cost is reduced by using a small amount, even if used in a small amount, there is an advantage that the deformation amount during fatigue after fatigue or fatigue strength is not reduced.

In addition, the reinforcing bar fitting according to the present invention has the advantage that the structure is simple and easy to assemble can be easily constructed by skilled workers.

In addition, the reinforcing bar joint according to the present invention does not generate an initial slip after assembly, there is an advantage that can be applied regardless of the type of reinforcing bars, such as the shape of the bar.

In addition, the reinforcing bar according to the present invention does not damage the reinforcing bar when assembled, there is an advantage that the specified yield, tensile strength of the reinforcing bar does not decrease.

Hereinafter, described in detail with reference to the accompanying drawings with respect to the reinforcing bar fitting according to the present invention.

1 is an exploded perspective view showing a reinforcing bar fitting according to the present invention, Figure 2 is a partial cross-sectional view showing an exploded state of the reinforcing bar fitting of Figure 1, Figure 3 is a partial cross-sectional view showing a state in which the reinforcing bar fitting of Figure 1 is assembled, 4 is a partial cross-sectional view showing an enlarged portion A in FIG. 3, FIG. 5 is a partial cross-sectional view showing a piece and a fixing member in the reinforcing bar fitting of FIG.

As shown in FIGS. 1 to 5, the reinforcing bar according to the present invention includes a plurality of pieces 200, a fixing member 300 to which the plurality of pieces 200 are coupled, the pieces 200, and the pieces. The member 300 is configured to include a joint body 110 and a fastening portion 120 screwed together to fix the coupled reinforcing bar 10.

Reinforcing bar fitting according to the invention is configured to connect the ends of the reinforcing bar 10 separated from each other in the longitudinal direction, as shown in FIG.

Wherein the reinforcing bar 10 is connected by the reinforcing bar according to the present invention can be a variety of configurations depending on the use and design, as shown in Figure 1, it is preferable that the nodes 11 and ribs 12 are formed Reinforcing bars and deformed bars used in construction, civil engineering, etc. are examples.

As shown in FIGS. 1 to 3, the joint body 110 is coupled to at least a portion of the fixing part material 300 and the piece pieces 200, that is, the piece pieces 200 fixed to the fixing member 300. At least a portion of the end portion of the reinforcing rod 10 is inserted into the insertion portion 111 is formed, the outer peripheral surface of the male screw portion 112 is formed for coupling with the tightening portion 120.

The male screw part 112 is formed at both ends of the joint part body 110 so that the tightening part 120 can be coupled to each other so that the tightening part 120 can be coupled at both ends of the joint body 110, respectively. The outer peripheral surface of the joint body 110 may be formed.

The joint sphere body 110 is made of a metal material such as iron in consideration of being a member connecting the reinforcing bar 10, in particular, preferably having the same material as the reinforcing bar 10, the cylindrical shape is opened along its longitudinal direction It is desirable to achieve.

On the other hand, the insertion portion 111 of the joint body 110 is formed with a first corresponding inclined surface 113 corresponding to the first inclined surface 210 of the piece 200 to be described later.

The first corresponding inclined surface 113 may be an inclined surface corresponding to the first inclined surface 210 to be described later, and may have the same inclination angle as the inclination angle α of the first inclined surface 210.

The fastening part 120 is a female screw portion 121 is formed on the inner circumferential surface to be coupled to the male screw portion 112 of the joint body 110, so that the remaining portion of the fixing member 300 and the pieces 200 are inserted. It is composed.

The fastening part 120 is screwed to one end of the joint body 110 in a state in which at least a portion of the reinforcing bar 10 to which the fixing member 300 and the pieces 200 are coupled is inserted into the reinforcing bar 10 It is configured to couple with the reinforcing bar 10 coupled to the other end of the joint body 110.

The fastening part 120 is made of a metal material such as iron in consideration of being a member connecting the reinforcing bar 10, in particular, it is preferable to have the same material as the reinforcing bar 10, the cylindrical shape is opened along its longitudinal direction Has

In this case, the tightening part 120 has a female screw portion 121 formed on an inner circumferential surface of one side coupled to the joint main body 110, and a second corresponding inclined surface 122 corresponding to the second inclined surface 220 on an inner circumferential surface of the other side. ) Is formed.

The first corresponding inclined surface 113 may be an inclined surface corresponding to the second inclined surface 220, which will be described later, and may have the same inclination angle as the inclined angle β of the second inclined surface 220.

Meanwhile, protrusions or grooves may be formed on the outer circumferential surface of the tightening part 120 in a direction parallel to the imaginary line L to facilitate assembly with the joint sphere 110 using a pipe wrench or the like, or may have a rectangular structure.

The pieces 200 are arranged in the circumferential direction to form a cylindrical insertion space (S) into which the end of the reinforcing bar is inserted, and is made of a metal material such as iron in consideration of the member connecting the reinforcing bar 10. .

The pieces 200 are preferably arranged at intervals from the adjacent pieces 200 to form a cylindrical insertion space (S).

And the inner circumferential surface of the plurality of pieces 200 are formed with a plurality of threads 250 so as to firmly ask the reinforcing bar 10, at least a portion of the threads 250 in the longitudinal direction of the pieces 200 It is preferable to have the forward screw structure having the same inclination angle both front and rear.

The pieces 200 may be any configuration, such as a structural surface projection capable of firmly biting the reinforcing bar 10 in addition to the threads 250.

On the other hand, the piece 200 is the first inclined surface 210 which is at least a part of the outer peripheral surface of the portion inserted into the joint body 110, and the second inclined surface 220 which is at least a portion of the outer peripheral surface of the portion inserted into the tightening unit 120. ) Is formed.

In addition, when the piece 200 has the longitudinal direction of the reinforcing bar 10 as the virtual line L, the first inclination angle α formed by the first inclined plane 210 with the virtual line L is the second inclined plane. It is formed smaller than the second inclination angle (β) formed with the virtual line (L).

Here, the first inclined surface 210 and the second inclined surface 220 are preferably formed at the end portions of the piece pieces 200, respectively.

When the first inclination angle α of the first inclined surface 210 is smaller than the second inclination angle β of the second inclined surface 220, the first inclined surface when the fastening part 120 and the joint body 110 are coupled to each other. Since the 210 comes into contact with the inner circumferential surface of the joint sphere body 40, that is, the first corresponding slope 113, the frictional force between the first slope 210 and the first corresponding slope 113 is reduced to the second slope 220. The inner circumferential surface of the tightening part 50, that is, the frictional force with the second corresponding inclined surface 122 becomes larger.

Therefore, when the fastening part 120 is rotated and assembled with the joint body 110, the friction force between the first inclined surface 210 and the first corresponding inclined surface 113 increases, so that the joint body 110 is not fixed separately. Even though the tightening unit 120 can be rotated only, there is an advantage of easy assembly.

In addition, as described above, the tightening unit 120 connects the reinforcing bar 10 to the joint body 110 more closely, and the second inclination angle β of the second inclined surface 220 into which the reinforcing bar 10 is inserted is made of When formed larger than the first inclination angle α, the second inclined surface 220 is in close contact with the second corresponding inclined surface 122, so that the initial deformation is small due to a small slip when the rebar 10 is tensioned. .

On the other hand, the inner circumferential surface of the second inclined surface 220 of the tightening part 120 is a part that asks the end of the reinforcing bar 10 after the end of the reinforcing bar 10 is inserted into the structure of the reinforcing bar 10 when installed in the structure. The stress applied to the outer circumferential surface becomes very large.

In particular, the inner circumferential surface of the second inclined surface 220 of the tightening part 120 penetrates the outer circumferential surface of the reinforcing bar 10 and damages the reinforcing bar 10, thereby reducing the longitudinal yield load of the reinforcing bar 10. have.

Accordingly, the tightening part 120 further includes a third inclined surface 230 having a third inclination angle γ greater than the second inclination angle β of the second inclined surface 220 at the end of the second inclined surface 220. Preferably formed.

When the third inclination angle γ of the third inclined surface 230 is larger than the second inclination angle β of the second inserting portion 220, the reinforcing bar 10 is not pressed by the fastening unit 120, thereby reinforcing the steel bar 10. It is possible to prevent digging into the outer circumferential surface of the) to reduce the longitudinal yield load of the reinforcing bar 10.

In addition, since the third inclined surface 230 having a third inclination angle γ is formed at the end of the fastening part 120 to which the reinforcing bar 10 is coupled, the rebar 10 is firmly fixed and easy to assemble. There is one advantage.

Meanwhile, a connection part 240 having an outer circumferential surface parallel to the virtual line L may be formed between the first slope surface 210 and the second slope surface 220.

The fixing member 300 is a configuration for fixing a plurality of pieces 200, various configurations are possible, as shown in Figure 3, the pieces 200 are inserted in a direction parallel to the virtual line (L) 6 and 7, the pieces 200 are inserted into the virtual line L in a vertical direction and are fixed, or a synthetic resin such as plastic in a state in which the pieces 200 are fixed. By injection, the pieces 200 may be variously configured and formed, such as a structure in which the pieces 200 are fixed.

The fixing member 300 is configured to fix one end of the pieces 200 to form the insertion space (S), the pieces 200 to be described later.

The fixing member 300 may be any configuration as long as the configuration for fixing the piece 200, as shown in FIGS. 1 to 3 and 5, the body portion 310 and the piece 200 It may be configured to be coupled to the coupling groove 260 formed on the outer circumferential surface of the coupling portion 320 is integrally connected by the body 310 and the bridge 330.

The body portion 310 is formed in a shape in which a portion of the end of the reinforcing bar 10 is inserted, as shown in Figure 1 and 2, may have a cap shape covering the end of the reinforcing bar 10.

Meanwhile, as shown in FIGS. 1 to 3 and 5, the body part 310 may have a cylindrical shape, and a support part 311 supporting the end of the inner circumferential surface of the piece pieces 200 may be further formed.

The coupling ring portion 320 is configured to fix the pieces 200 in a state connected with the body portion 310, in this embodiment is configured to be inserted into the coupling groove 260 formed in the piece 200. Although illustrated, various configurations are possible depending on the coupling structure with the pieces (200).

In particular, the coupling ring 320 may be any structure that can be fixed to the piece piece 200 and can constitute a fixing member 300 without the configuration of the body portion 310.

The bridge 330 is configured to connect the coupling ring 320 and the body portion 310 at a position corresponding to the width of the pieces 200 is possible in various configurations.

As shown in FIG. 1, an outer circumferential surface of the bridge 330 may be formed to be inclined at least partially corresponding to the second corresponding sloped surface 122. In addition, at least some of the outer circumferential surface of the bridge 330 may protrude more than the first inclined surface 210.

On the other hand, the material of the fixing member 300 is a configuration for fixing the pieces 200 when assembling the reinforcing bar, it is preferable that the material is easy to deform, plastic material such as plastic is most preferred.

Meanwhile, as described above, the fixing member 300 may have various structures according to the coupling structure with the piece 200, and as shown in FIGS. 6 to 10, the pieces 200 are virtual lines L. FIG. ) May be inserted and fixed in a vertical direction.

6 is a partial cross-sectional view showing a coupling state of the reinforcing bar fitting according to the present invention having a deformed fixing member, Figure 7 is a partial cross-sectional view showing an exploded state of the reinforcing bar fitting of Figure 6, Figure 8 of the reinforcing bar fitting of Figure 6 9A and 9B are diagrams showing pieces of the reinforcing bar of FIG. 6, and FIG. 10 is a perspective view showing a state in which the fixing member and pieces of the reinforcing bar of FIG. 6 are combined.

Reinforcing bar shown in Figure 6 to 10 is another embodiment of the reinforcing bar according to the present invention, there is a difference in the configuration of the pieces 200 and the fixing member 400, the remaining configuration is given the same reference numerals And the description is omitted.

The fixing member 400 of the reinforcing bar illustrated in FIGS. 6 to 10 is formed to be coupled in a direction perpendicular to the imaginary line L when coupled with the pieces 200.

That is, the fixing member 400 is formed to fit into the body portion 410, the coupling groove 260 formed on the outer circumferential surface of the piece 200, by the body portion 410 and the bridge 430 It may be configured to include a coupling ring 420 connected. Here, the coupling ring portion 420 is preferably formed integrally with the bridge 430 and the body portion 410.

The body portion 410 has a cylindrical shape, as shown in Figures 6 to 10, is formed in a form that is inserted into a portion of the end of the reinforcing bar 10, as shown in Figure 6, the reinforcing bar 10 It may have a cap shape covering the end of the).

The coupling ring part 420 is configured to fix the pieces 200 in a state of being connected to the body part 410, and is configured to be inserted into a coupling recess 260 formed in the piece 200. Wherein the coupling groove 260 formed in the piece 200 is preferably formed in a thicker position in the piece 200 than the embodiment of FIG.

The bridge 430 is configured to connect the coupling ring portion 420 and the body portion 410 at a position corresponding to the width of the pieces 200, the outer circumferential surface is shown in Figures 6, 8 and 10 As described above, at least a portion may be inclined to correspond to the second corresponding inclined surface 122.

8 and 10, the bridge 430 may further protrude from the coupling ring 420 in the longitudinal direction of the reinforcing bar 10, and the bridge 430 may be a piece 200. It is formed in plural to be positioned between, the width may have a width corresponding to the spacing of the pieces 200 for a solid support of the pieces 200.

On the other hand, the material of the fixing member 400 is a configuration for fixing the pieces 200 when assembling the reinforcing bar, it is preferable that the material is easy to deform, plastic material such as plastic is most preferred.

11A and 11B are perspective views showing another modified member of the rebar fitting of FIG. 1.

Meanwhile, the reinforcing bar fitting according to the present invention is assembled with the piece pieces 200 while the fixing member supports one end of the piece piece 200 and a part of the end of the reinforcing bar 10 is inserted into the joint body 110 and the tightening part 120. ) By combining the reinforcing bar 10 and the reinforcing bar (10).

In particular, when the body 110 and the fastening unit 120 is coupled to the assembly state of the fixing member and the piece 200 needs to be more stable.

Therefore, in addition to the configuration shown in Figures 1 and 8, the fixing member 500 to which the pieces 200 are assembled, as shown in Figure 11a, the body portion 510, the coupling formed on the outer peripheral surface of the piece 200 It is formed to be fitted into the recess 260 and may be configured to include a coupling ring portion 520 connected by the body portion 510 and the bridge 530. Here, the coupling ring portion 420 is preferably formed integrally with the bridge 430 and the body portion 410.

The body portion 510 may have a cylindrical shape, may be formed in a shape in which a portion of the end portion of the reinforcing rod 10 is inserted, and may have a cap shape covering the end portion of the reinforcing rod 10.

As shown in FIGS. 11A and 11B, the body part 510 corresponds to the outermost diameter of the reinforcing bar 10, that is, the distance from the center of the reinforcing bar 10 to the outer circumferential surfaces of the nodes 11 and ribs 12. Reinforcing bar insertion portion 540 is formed to have an inner diameter that is inserted into a portion of the end portion of the reinforcing bar 10 is additionally formed.

The coupling ring part 520 is configured to fix the pieces 200 in a state of being connected to the body part 510, and is configured to be inserted into the coupling recess 260 formed in the piece 200. Here, the coupling recess 260 formed in the piece 200 is preferably formed at a thicker position in the piece 200 than in the embodiment of FIG. 1.

The bridge 530 is configured to connect the coupling ring portion 520 and the body portion 510 at a position corresponding to the width of the pieces 200, the outer peripheral surface of the second, as shown in Figure 11a and 11b, At least a portion may be inclined to correspond to the corresponding inclined surface 122.

11A and 11B, the bridge 530 may protrude further from the coupling ring 520 in the longitudinal direction of the reinforcing bar 10, and the bridge 530 may have a piece 200. It is formed in plural to be positioned between, the width may have a width corresponding to the spacing of the pieces 200 for a solid support of the pieces 200.

Meanwhile, the coupling ring part 520 is formed to correspond to the coupling recess 260 formed in each piece 200, and the bridge 530 is formed in the remaining portions except for the portion corresponding to the coupling recess 260. As shown in FIGS. 11A and 11B, the bridge 530 may further include a recessed recessed portion 531.

The depression 531 is preferably formed to have an inner diameter corresponding to the outermost diameter of the reinforcing bar 10, that is, the distance from the center of the reinforcing bar 10 to the outer circumferential surfaces of the nodes 11 and ribs 12.

On the other hand, the material of the fixing member 500, as described above, as a configuration for fixing the pieces 200 when assembling the reinforcing bar, it is preferable that the material is easy to deform, synthetic resin material such as plastic is most preferred.

In the above, the preferred embodiment of the present invention has been illustrated and described, but the present invention is not limited to the specific embodiments described above, and the technical spirit of the present invention and the following by those skilled in the art to which the present invention pertains. Various modifications and variations will be possible within the scope of equivalents of the claims to be described therein, and such variations will fall within the protection scope of the present invention.

1 is an exploded perspective view showing a reinforcing bar fitting according to the present invention.

2 is a partial cross-sectional view showing an exploded state of the reinforcing bar fitting of FIG.

3 is a partial cross-sectional view showing a state in which the reinforcing bar fitting of FIG. 1 is assembled.

4 is an enlarged cross-sectional view of part A of FIG. 3.

5 is a partial cross-sectional view showing a piece and a fixing member in the reinforcing bar of Figure 1;

6 is a partial cross-sectional view showing a coupling state of the reinforcing bar fitting according to the present invention having a deformed fixing member.

7 is a partial cross-sectional view showing an exploded state of the reinforcing bar fitting of FIG.

8 is a perspective view showing a fixing member of the reinforcing bar fitting of FIG.

9A and 9B are diagrams showing fragments of the reinforcing bar of FIG. 6.

10 is a perspective view illustrating a state in which the fixing member and the pieces of the reinforcing bar fitting of FIG. 6 are combined.

11A and 11B are perspective views showing another modified member of the rebar fitting of FIG. 1.

***** Explanation of symbols for main parts of drawing *****

110: reinforcing bar 120: fastener

200: pieces 300: fixing member

Claims (14)

A plurality of pieces arranged in a circumferential direction to form a cylindrical insertion space into which end portions of the reinforcing bars are inserted; A fixing member for fixing one end of the pieces so that the pieces form the insertion space; A joint body having a male screw portion formed on an outer circumferential surface thereof and into which at least a portion of the fixing member and the pieces are inserted; A female screw portion is formed on an inner circumferential surface to be coupled to the male screw portion of the joint body, and includes a fastening portion into which the fixing member and the remaining portions of the pieces are inserted; The piece piece is formed with a first inclined surface of at least a portion of the outer peripheral surface of the portion inserted into the joint body, and a second inclined surface of at least a portion of the outer peripheral surface of the portion inserted into the tightening portion, A first corresponding inclined surface corresponding to the first inclined surface is formed at an end portion of the inner circumferential surface of the joint body, and a second corresponding inclined surface corresponding to the second inclined surface is formed on the inner circumferential surface of the tightening part. Reinforcing bar fittings, characterized in that the first inclination angle formed by the first inclined plane with the imaginary line is smaller than the second inclination angle formed by the second inclined plane when the longitudinal direction of the reinforcing bar as the virtual line. The method according to claim 1, Reinforcing bar fittings, characterized in that the first slope and the second slope is formed at each end of the piece piece. The method according to claim 1, The fixing member is a reinforcing bar fitting, characterized in that it comprises a coupling ring formed to be fitted to the coupling groove portion formed on the outer peripheral surface of the piece. The method according to claim 1, The fixing member Reinforcing bar fittings characterized in that it comprises a body portion, the coupling ring formed on the coupling groove formed on the outer circumferential surface of the piece piece and connected by the body portion and the bridge. The method according to claim 4, Reinforcing bar fitting characterized in that the bridge connects the coupling ring portion and the body portion at a position corresponding to the width of the pieces. The method according to claim 4, Reinforcing bar fittings characterized in that the bridge is further protruded from the coupling ring portion. The method according to claim 4, Reinforcing bar fittings, characterized in that at least some of the outer peripheral surface of the bridge protrudes more than the first inclined surface. The method according to claim 4, The body portion has a cylindrical shape, the reinforcing bars characterized in that the support portion for supporting the end of the inner circumferential surface of the pieces further formed. The method according to claim 4, The fixing member has a plastic material, characterized in that the reinforcing bar fittings are integrally coupled with the pieces by injection. The method according to claim 1, Reinforcing bar fitting, characterized in that a plurality of threads are formed on the inner peripheral surface of the pieces. The method according to claim 10, Reinforcing bar fittings characterized in that at least some of the threads have a positive screw structure having the same inclination angle in the front and rear in the longitudinal direction of the pieces. The method according to any one of claims 1 to 11, The piece pieces are reinforced bars characterized in that the third inclined surface having a larger inclination angle than the second inclined surface formed at the end of the second inclined surface. The method according to claim 4 or 5, Reinforcing bar fittings characterized in that the bridge is further formed recessed recessed portion. 14. The method of claim 13, The recess is a reinforcing bar fitting, characterized in that it has an inner diameter corresponding to the distance from the center of the reinforcement to the outermost diameter.

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