KR101267769B1 - Steel bar and coupling device the same - Google Patents

Abstract

The reinforcing bar of the present invention includes a body portion having the same cross-sectional diameter in the longitudinal direction, and a rib portion protruding outward from the outer circumferential surface of the body portion and having a sloped cross-section at one side and a vertical cross-section at the other side. The reinforcement of the present invention is characterized in that it comprises a joint portion having a reinforcing steel insert hole from both ends to an inner center thereof so as to insert the pair of reinforcing bars into both sides thereof and a joint portion formed along the wall surface from the side of the reinforcing steel insert hole, And a joint fixing portion having an elastic displacement in a direction in which the diameter of the reinforcing bar insertion hole is expanded or contracted by the pressing of the rib portion.

Description

{STEEL BAR AND COUPLING DEVICE THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar and a reinforcing bar, and more particularly, to a reinforcing bar and a reinforcing bar having a one-touch fastening structure so as to more quickly and simply perform the joining operation between reinforcing bars.

Reinforcing bars are basically reinforcing members used to form reinforced concrete structures or steel concrete structures, and many reinforcing bars may be used as long as required to meet the requirements.

Typical reinforcement methods include lap joints, gas pressure joints, mechanical joints, and screw joints.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a reinforcing bar and a reinforcing bar joint having a shape capable of quickly and easily performing a reinforcing bar joint operation by a one-touch fastening method.

According to the present invention, there is provided a biaxial extruder comprising: a body portion having the same cross-sectional diameter in the longitudinal direction; And a rib portion protruding outward from an outer circumferential surface of the body portion, the rib portion having an inclined cross section at one side and a vertical cross section at the other side.

Here, the ribs may be spaced apart at equal intervals along the longitudinal direction of the body, and may have a right triangular cross-sectional shape in which an inclined end of one side and a vertical end of the other side are directly connected.

The rib portion may further include a flat central cross section between an inclined end face of one side and a vertical end face of the other side, and may have a rectangular cross-sectional shape in which a sloped end face of one side, a flat central end face, have.

According to another aspect of the present invention, there is provided a bending machine comprising: a body; and a pair of reinforcing bars protruding outwardly from an outer circumferential surface of the body portion and including a rib portion having an inclined surface on one side and a vertical section on the other side, A joint portion having a reinforcing bar insertion hole from an inner side to an inner side; And a joint which is formed along the wall surface from the side of the reinforcing bar insertion hole to support and fix the inserted reinforcing bar with elastic displacement in a direction in which the diameter of the reinforcing bar insertion hole is expanded or contracted by the pressing of the rib when the reinforcing bar is inserted And a reinforcing joint including a fixing portion.

Here, the joint portion may be a circular tube member having the reinforcing bar insertion hole as a hollow.

The reinforcing bar insertion holes may be formed in a pair of left and right symmetrical shapes from both ends of the joint portion to the center of the inner side, and barrier ribs may be formed at the ends of the reinforcing bar insertion holes.

Wherein the joint fixing portion moves in a direction in which a diameter is expanded and contracted in association with the pressing and releasing of the rib portion when the reinforcing bar is inserted; And an elastic body elastically interposed between the movable fastener and the joint portion.

In addition, the fixing piece is formed such that a cross-sectional shape at a portion to be pressed by the rib portion is formed so as to be inclined gradually from both ends of the joint portion toward the inner central direction, and the position displaced by the elastic body is restored upon completion of insertion of the reinforcing bars So that the vertical cross section of the rib portion can be directly held and supported.

According to the reinforcing bars and reinforcing bars of the present invention, it is possible to shorten the time required for reinforcing bars and to improve the workability by improving the structure to be able to fasten the reinforcing bars in a one-touch manner.

1 is a view schematically showing a reinforcing bar according to a first embodiment of the present invention.
2 is a view schematically showing a reinforcing bar according to a second embodiment of the present invention.
3 is a schematic view illustrating a cross-sectional structure of a reinforcing bar according to an embodiment of the present invention.
FIGS. 4 and 5 are cross-sectional structural views illustrating the operation of connecting the reinforcing bars according to the first embodiment shown in FIG. 1 by using the reinforcing joints.
FIGS. 6 and 7 are cross-sectional structural views illustrating the relationship between the reinforcing bars and the reinforcing bars according to the second embodiment of the present invention shown in FIG.

Hereinafter, preferred embodiments of the reinforcing bars and reinforcing bars according to the present invention will be described.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited by the embodiments disclosed below but may be embodied in various other forms. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a view schematically showing a reinforcing bar according to a first embodiment of the present invention.

Referring to FIG. 1, the reinforcing bar 100 shown in FIG. 1 includes a body 110 having the same cross-sectional diameter in the longitudinal direction, a body portion 110 protruding from the outer surface of the body 110 to the outer surface, And a rib portion 120 having a cross section.

The body portion 110 of the reinforcing bar 100 in the first embodiment is a rod (or wire) member having a predetermined diameter in the longitudinal direction (or the axial direction).

The body 110 is a member that exhibits structural rigidity within the reinforcing bar 100. As the material, carbon steel or carbon steel alloy having high strength characteristics may be used. In addition, although the cross section of the body part 110 is shown as a circle in FIG. 1, such a shape is illustrative and the scope of the present invention need not be limited by the specific shape. Also, referring to FIG. 1B, the body 110 is shown to have a solid internal cross-section, but may be variously shaped to have an internal cross-section according to the purpose for which it is used. It can be deformed.

The rib portion 120 of the reinforcing bar 100 in the first embodiment is a nod member protruding outward from the outer peripheral surface of the body portion 110. [ The ribs 120 are formed along the outer circumferential surface of the body 110 at predetermined intervals in the longitudinal direction.

 Particularly, referring to FIGS. 1 (a) and 1 (b), a specific shape can be confirmed. The rib portion 120 has a sloped surface 120a at one side thereof, A vertical cross section 120b is provided.

Here, it is a feature according to the first embodiment 100 that both end faces have different shapes, which enables one-touch fastening with a reinforcing joint to be described later.

In other words, the inclined end face 120a of the rib portion 120 is a portion that enters the reinforcement joint to be described later, and the vertical end face 120b of the rib portion 120 prevents the reinforcement bar from being detached after entering the reinforcement joint The stopper is a part that exerts the function of the stopper. The entire cross-sectional shape of the rib portion 120 has a right-angled triangular cross-sectional shape through the connection of the inclined end face 120a and the vertical end face 120b.

The rib portion 120 of the reinforcing bar 100 may be made of the same material as the material of the body 110 described above. For example, carbon steel or carbon steel alloy having high strength may be used.

The body portion 110 and the rib portion 120 constituting the reinforcing bar 100 of the first embodiment are not in the form of separate members but are a series of configurations, The concept is divided into two.

Therefore, the shape of the body 110 and the rib 120 can be formed simultaneously when the reinforcing bars 100 are manufactured, and the reinforcing bars 100 can be manufactured in various sizes and shapes according to their strength characteristics.

2 is a view schematically showing a reinforcing bar according to a second embodiment of the present invention.

The second embodiment has the same shape of the body portion 110 of the body portion as that of the first embodiment described above. However, the shape of the rib portion 120 of the second embodiment is different from that of the first embodiment described above. Here, in order to omit redundant description of the same configuration, only the difference between the rib portion 120 and the rib portion 120 will be briefly described.

Referring to FIG. 2, the rib portion 120 is formed as a plurality of ribs protruding outwardly from the outer circumferential surface of the body portion 11 in the longitudinal direction along the outer circumferential surface of the body portion 11. It should be noted that FIG. 2 shows a different shape from the embodiment described in FIG.

In order to confirm the specific shape of the rib part 120, the rib part 120 has an inclined end face 120a and the other end has a vertical end face 120b. do. Further, a flat central section 120c is further provided between the inclined section 120a and the vertical section 120b. As a result, the overall shape of the rib portion 120 is such that the inclined end face 120a, the central end face 120c, and the vertical end face b are directly connected in order, and then, through the boundary with the body portion 110, Lt; / RTI >

The entire cross-sectional shape of the rib portion 120 enables one-touch fastening with a reinforcing bar joint to be described later. As described above, the rib portion 120 here is also inserted into the reinforcing steel joint through the inclined end face 120a, and has a function of preventing the reinforcing bar from being detached after entering the reinforcing steel joint through the vertical end face 120b .

The high strength carbon steel or carbon steel alloy may be used for the material of the rib portion 120 as well as the body portion 110 in the second embodiment.

3 is a schematic view illustrating a cross-sectional structure of a reinforcing bar according to an embodiment of the present invention.

As shown in the figure, the reinforcement joint 200 includes a joint 210 having a reinforcing bar insertion hole 213 for inserting a pair of reinforcing bars on both sides thereof, a joint portion 210 for fixing the reinforcing bar inserted from the inside of the joint 210, (220).

The reinforcement joint 200 here is a device for connecting and connecting a pair of reinforcing bars (100 of FIG. 1 and FIG. 2) according to the first and second embodiments of the present invention discussed above with reference to FIGS.

The joint part 210 is a member for inserting and connecting a pair of reinforcing bars through both ends. 3, only the cross-sectional shape of the joint 210 is shown, but the outer shape of the joint 210 does not need to be particularly limited. In a preferred embodiment, 110, and may be a tubular member having a square or regular hexagonal outer shape.

The joint portion 210 has a hole for inserting a reinforcing bar, that is, a reinforcing bar insertion hole 213 from both ends to an inner center portion formed to be open, for inserting and connecting a pair of reinforcing bars through both ends.

3, a pair is formed symmetrically with respect to both ends of the joint 210, and the ends of each of the reinforcing bars 213, i.e., the inner center of the joint, They are separated from each other and clogged.

For this purpose, a partition wall 211 for restricting communication between the left and right reinforcing bars 213 is formed at the inner center of the joint 210 corresponding to the end opposite portion of the pair of reinforcing bars 213 . The partition walls 211 restrict the insertion length of the reinforcing bars from both ends equally, thereby facilitating the joining operation between the reinforcing bars.

The joint fixing portion 220 is a reinforcing bar fixing means formed along the wall surface (upper and lower wall surfaces in the drawing) from the entrance 213a of the reinforcing bar insertion hole 213 to support and fix the inserted reinforcing bars.

Particularly, the joint fixing part 220 has an elastic displacement in a direction in which the diameter of the reinforcing bar insertion hole 213 is expanded or contracted by the pressing of the reinforcing rib part (120 in FIGS. 1 and 2) The reinforcing bars are prevented from being separated from each other and fixed.

To this end, the joint fixing part 220 includes a movable fixing piece 221 and a detailed configuration of the elastic body 223.

The movable fixing piece 221 is a member moving in the direction in which the diameter of the reinforcing bar insertion hole is expanded and contracted in conjunction with the pressing and releasing of the rib portion when the reinforcing bar is inserted along the outer periphery of the reinforcing bar insertion hole 213.

The elastic body 223 is a spring-shaped member interposed between the outward end of the movable fastening piece and the inner peripheral surface of the joint. The movable fixing piece 221 is elastically contracted when it is pressed by the rib portion of the reinforcing bar to be inserted and assumes a limited flow posture in which the reinforcing bar is elastically restored when the reinforcing bar is fully inserted.

With the elastic shrinkage and elastic restoration of the elastic body 223, the movable fastening piece 221 connected thereto is moved in a direction in which the diameter of the reinforcing bar insertion hole 213 is expanded and contracted.

The movable fixing piece 221 is supported by the elastic body 223 in accordance with the pressing and releasing of the rib portion of the reinforcing bar (120 in FIGS. 1 and 2) and has a motion to contract and expand. Further, So that it can have a cross-sectional shape fixed more firmly.

To this end, the movable fixing piece 221 has a shape in which the cross-sectional shape of a portion of the reinforcing bar that is in contact with the rib portion (120 of FIGS. 1 and 2) extends from both ends of the joint portion 210 toward the inner center . As a result, when the insertion of the reinforcing bar is completed, the movable fixing piece 221 can be restored to its position displaced by the elastic body 223 and directly supported by the vertical section of the rib portion of the reinforcing bar. Thereby, it is possible to prevent the reinforcing bars from being separated by themselves after the reinforcing bar joining operation.

In the case of the reinforced concrete joint 200 according to the preferred embodiment of the present invention, the joint 210 and the joint 220 may use any one of carbon steel, heat treated steel and alloy steel depending on the strength of the reinforcing steel to which the joint is connected . Thus, when the reinforcing bar in use is subjected to tensile stress, the reinforcing bar 200 can also be structurally secured.

FIG. 4 and FIG. 5 are cross-sectional structural views illustrating a process of connecting a reinforcing bar according to the first embodiment of the present invention using a reinforcing bar. 4 and 5, the effect of the reinforcing bar joint will be described.

Referring to FIG. 4, a pair of reinforcing bars 100 are connected at both sides of one reinforcing joint 200. The pair of reinforcing bars used in this case is a reinforcing bar according to the first embodiment of the present invention, which has been described with reference to FIG. 1, and includes a body 110 having the same cross-sectional diameter in the longitudinal direction, And a rib portion 120 having a vertical cross section at the other side.

First, when a pair of reinforcing bars 100 are inserted into the reinforcing bar insertion holes 213 in the reinforcing bar 200, the movable reinforcing bars 221 are pushed outward by being pressed by the protrusions of the inserted ribs 120 I will go. At this time, the elastic body 223 which is supported elastically on the opposite side of the movable fixing piece 221 is elastically contracted to have a compressed displacement. The diameter of the tip of the reinforcing bar insertion hole 213 is enlarged (the expanded diameter is d2), so that the reinforcing bar 100 is inserted smoothly.

5, when the insertion of the reinforcing bar 100 is completed, as the elastic body 223 elastically contracted by the rib 120 during the insertion is restored to the original state, It also flows in the initial posture. As a result, the front end portion 221a of the movable fastening piece 221 is held in contact with the vertical end surface 120b of the inserted rib portion 120. As a result, the insertion and removal of the inserted reinforcing bars is prevented, and the pair of reinforcing bars maintains a firm joint state.

FIGS. 6 and 7 are cross-sectional structural views showing a process of connecting a reinforcing bar according to a second embodiment of the present invention using a reinforcing joint. FIG. Referring to FIGS. 6 and 7, it will be understood that the process of inserting the reinforcing bar 100 according to the second embodiment of the present invention shown in FIG. 2 and the process of maintaining a firm connection state after the insertion. This is because the process is the same as that shown in FIGS. 4 and 5.

As described above, according to the reinforcing bars and reinforcing bars of the present invention, in order to improve the speed and workability of reinforcing bars, it is possible to apply different structures of reinforcing bars, As shown in FIG.

The preferred embodiments of the reinforcing bars and reinforcing bars according to the present invention have been described above.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: Rebar
110:
120: rib portion
200: Iron wire connection
210:
211: partition wall 213: reinforcing bar insertion hole
220:
221: Fixing piece 223: Elastic body

Claims (11)

delete delete delete delete delete And a rib portion projecting outwardly from an outer circumferential surface of the body portion and having a slope on one side and a rib portion having a vertical cross section on the other side, ; And
Wherein the reinforcing bar is provided with a resilient displacement in a direction in which the diameter of the reinforcing bar insertion hole is expanded or contracted by the pressing of the rib when the reinforcing bar is inserted when the reinforcing bar is inserted from the entrance side of the reinforcing bar insertion hole, Government,
Wherein the joint fixing portion moves in a direction in which a diameter is expanded and contracted in association with the pressing and releasing of the rib portion when the reinforcing bar is inserted; And an elastic body elastically interposed between the movable fastener and the joint,
The movable fixing piece is formed such that a cross-sectional shape at a portion to be pressed by the rib portion is formed so as to be inclined gradually from both ends of the joint portion toward an inner central direction, and a position displaced by the elastic body is restored upon completion of insertion of the reinforcing bar And the vertical section of the rib portion is directly contacted and supported.
The method according to claim 6,
In the joint,
Wherein the reinforcing bar is a circular pipe member having a hollow reinforcing bar hole.
The method according to claim 6,
In the reinforcing bar insertion hole,
Wherein a pair of ribs are formed symmetrically from both ends of the joint to the inner center of the reinforcing bars, and a partition wall separating the ribs from each other is formed at the ends of the reinforcing bars.
delete delete The method according to claim 6,
Wherein the joint portion and the joint fixing portion are made of any one material selected from carbon steel, heat-treated steel and alloy steel according to the strength of the steel reinforcing bar.

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