KR100923565B1 - Coupler and coupling structure - Google Patents

Abstract

PURPOSE: A coupler and a coupling structure are provided to maintain stable connection state of concrete parts by not separating a stopper limiting the motion of an arm coupler from a male screw part of a connection rod. CONSTITUTION: A coupler(100) comprises a male coupler, an arm coupler, a stopper, and a fastening unit. The male coupler(110) has a male screw part(111a) and a female screw hole(111b). The arm coupler(120) has a female screw hole(122a) screwed in the male screw part of the male coupler. The arm coupler has a holding part(122c) formed on the boundary between the female screw hole and the inserting hole. The stopper(130) limits the movement of the arm coupler. The stopper is inserted into a through-hole of the fixing nut. The fastening unit(160) prevents a stopper from being separated from the male screw part of the connection rod.

Description

COUPLER AND COUPLING STRUCTURE}

The present invention relates to a connector for interconnecting concrete parts, and a connecting structure configured by interconnecting concrete parts using the connector, and more particularly, can be coupled to the male thread of the connecting rod to limit the movement of the female coupler. A connector and a connecting structure having a stopper and a locking means adapted to prevent the stopper from being separated from the male threaded portion of the connecting rod.

In general, concrete structures such as waterways and retaining walls are assembled by bringing concrete parts manufactured at the factory to the site and connecting them appropriately at the site.

Since welding is generally used for the above connection, the concrete part is provided such that the end of the connecting rod made of steel is exposed in the vicinity of the connection surface of the concrete part. As such, when connecting the concrete parts, the ends of the connecting rods are joined by welding in a state in which the connection surfaces of the concrete parts are combined with each other.

However, in the conventional connecting means and method, the axis of the connecting rod is slightly displaced, and the joining quality due to welding is not uniform, and the joining quality by welding is also uneven depending on the environmental conditions and the ability of the welding worker. There is discomfort. In addition, in order to obtain watertightness or airtightness at the joints, it is necessary to perform welding with a load applied to the interconnecting surfaces of the concrete parts.However, if it is difficult or impossible to apply a load due to the shape or connection direction of the concrete parts, It is not possible to obtain concrete structures with water tightness or airtightness.

The present invention is to solve the conventional problems as described above, the object of the present invention is to provide a connector that can easily and well interconnect the concrete parts, and provides a connection structure interconnected through the connector in a good state of the concrete parts However, it is to provide a connector and a connecting structure to maintain a stable connection state of the concrete parts by not being separated from the male threaded portion of the connecting rod coupled to the connecting rod of the connector to limit the movement of the female coupler.

In order to achieve the above object, the present invention is configured as follows.

The connector of the present invention is a connector used when the connecting rod interconnects concrete parts embedded so that the male threaded portion of the tip is exposed, and has a male threaded portion on the outer surface and a female threaded hole that can be screwed to the male threaded portion of the connecting rod from one end. A coupler having the other end; Have a female screw hole that can be screwed onto the outer male threaded portion of the male coupler from one end to the other end, and have a male threaded portion of the connecting rod having a margin to allow the insertion hole to reach the female threaded hole from the other end. A female coupler which stops at a boundary between the insertion hole and the insertion hole; A stopper which inserts the female coupler from the outside of the male screw portion of the connecting rod through the insertion hole and is screwed to the male screw portion of the connecting rod to limit the movement of the female coupler by cooperation with the stopper; And a locking means configured to prevent the stopper from being separated from the male screw portion of the connecting rod.

According to the connector of the present invention, the female screw hole of the male coupler is screwed into the male screw portion in the recess of one concrete part, and the female coupler is inserted from the outside through the insertion hole in the male screw portion in the recess of the other concrete component. After screwing the stopper on the male screw part, the concrete parts can be interconnected by giving a force to pull the connecting coupler to the mating connecting rod by screwing the female coupler to the male coupler while the connecting surfaces of the concrete parts are combined. In this case, the stopper is not separated from the male threaded portion of the connecting rod by the locking means, thereby stably maintaining the coupled state so that the concrete parts are held in a stable state.

On the other hand, the connecting structure of the present invention includes a concrete part having a concave portion having an opening in a surface adjacent to the connecting surface and the connecting surface, and a connection rod embedded in the part so that the male screw portion of the tip is exposed in the concave portion; It is provided with a connector for interconnecting the concrete parts by applying a pulling force to the mating connecting rod in a state in which the concrete parts are combined through the connecting surface, the connector having a male screw portion on the outer surface, and screwed to the male screw portion of the connecting rod. A male coupler having a mating female threaded hole from one end to the other end, and a female threaded hole from the one end to the other end with a female threaded hole that can be screwed to the outer threaded portion of the male coupler, and the male threaded portion of the connecting rod has a margin. A female coupler having an insertable insertion hole reaching the female threaded hole from the other end and having a stop at a boundary portion between the female screwed hole and the inserted hole; and a female coupler from the male threaded portion of the connecting rod through the insertion hole. After inserting it, it is screwed to the male thread of the connecting rod to move the female coupler. A stopper that can be restricted by cooperation with a stop, and a locking means configured to prevent the stopper from being separated from the male threaded portion of the connecting rod, wherein the coupler of the coupler is the number in the recess of one concrete part. The female coupler is installed by screwing the female threaded hole into the threaded portion, and the female coupler is inserted from the outside through the insertion hole in the male threaded portion in the recess of the other concrete component, and then a stopper is attached to the male threaded portion, and the connection surface between the concrete components is The female coupler is screwed to the male coupler in a combined state to impart a pulling force to the mating connecting rod to connect the concrete parts to each other.

According to the connecting structure of the present invention, a male coupler is provided by screwing a female screw hole into a male threaded portion provided in a recess of one concrete part, and then it is inserted from the outside through an insertion hole in the male threaded portion of the recess of the other concrete part. The female coupler is screwed in the state where the stopper is screwed on the male threaded portion to the connection surface of the concrete parts. Therefore, the concrete parts are connected to each other by applying a pulling force to the connection rods facing each other, and through the structure of the connection structure, the concrete parts are held in a stable state.

According to the connector and the connecting structure according to the present invention, not only can the interconnection of concrete parts be easily and satisfactorily performed, but also once the connector is coupled through the stopper and the locking means effectively prevents mutual separation between the connector parts. It is possible to keep the concrete parts interconnected stably.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

A connector 100 according to the invention is shown in FIG. 1.

The first and second concrete parts PC1 and PC2 to which the connector 100 of the present invention is mounted are precast concrete parts for building concrete structures such as waterways and retaining walls.

The connector 100 of the present invention interconnects the first concrete part PC1 and the second concrete part PC2 by the male coupler 110, the female coupler 120, the stopper 130, and the fixing screw 140. It is supposed to.

In the 1st concrete part PC1, the recessed part FP1 which has an opening in the surface adjacent to the connection surface PC1a and the connection surface PC1a is formed along the connection surface PC1a.

When the said 1st concrete part PC1 is large, you may make it provide the recessed part FP1 in each of the two opposing surfaces adjacent to the connection surface PC1a.

In addition, a connection rod CR1 made of steel having a male screw portion ET1 at the distal end is embedded in the first concrete part PC1 by a number corresponding to the number of recesses FP1, and the connection rod CR1. The male thread part ET1 of () is exposed in the recessed part FP1.

1 shows that the convex portion or the concave portion is formed on the surface of the concave portion or the concave portion in order to increase the adhesive strength with the first concrete part PC1 to increase the tensile strength of the connecting rod CR 1. It may be used as the connecting rod CR1 that does not have a value of.

The connecting rod CR1 may be coupled to the reinforcing bar embedded in the first concrete part PC1 by welding or wire connection. In addition, a slightly longer one having a male screw portion at the tip may be used as the main rod of the internal reinforcing bar, and the male screw portion of the main rod may be exposed in the recess FP1 to replace the connecting rod CR1.

One or more concave portions FP2 having openings in the surface adjacent to the connecting surface PC2a and the connecting surface PC2a are formed in the second concrete part PC2 along the connecting surface PC2a. In the case where the second concrete part PC2 is large, the concave portion FP2 may be provided on each of the two opposing surfaces adjacent to the connecting surface PC2a.

The size and position of the recess FP2 substantially coincide with the size and position of the recess FP1 of the first concrete part CP1.

In addition, inside the first concrete part PC2, steel connecting rods CR2 having male threads ET2 at the ends thereof are embedded in the number corresponding to the number of recesses FP2, and connecting rods CR2. The male thread part ET2 of) is exposed in the recessed part FP2.

In the drawing, the convex portion or the concave portion is formed on the surface of the convex portion or the concave portion to increase the adhesive strength with the second concrete part PC2 to increase the tensile strength of the connecting rod CR2. The thing which does not have may be used as connection rod CR2.

In addition, the connecting rod CR2 may be coupled to a reinforcing bar embedded in the second concrete part PC2 by welding or wire connection. In addition, a slightly longer one having a male screw portion at the tip may be used as the main rod of the internal reinforcing bar, and the male screw portion of the main rod may be exposed in the recess FP2 to replace the connecting rod CR2.

The male coupler 110 is generally cylindrical in shape, and on its outer surface a male screw portion 111a is formed from the upper end to the lower end. In addition, a female screw hole 111b that can be screwed into the male screw portion ET1 of the connecting rod CR1 is formed in the center of the lower surface of the male coupler 110 from the lower portion toward the upper end.

In addition, a concave portion 111c is formed on the upper surface of the male coupler 110 to prevent the connecting rod CR2 of the second concrete component PC2 from colliding with the male coupler 110. The ring-shaped flange portion 111d and the tool engagement portion 111e are formed below the male screw portion 111a on the outer surface of the male coupler 110 again.

In the drawing, a plurality of recesses arranged at equal angle intervals around the bottom surface of the male coupler 110 are shown as tool engagement portions 111e. 111e).

On the other hand, the female coupler 120 is generally cylindrical in shape, and a female threaded hole 122a into which the male threaded portion 111a of the male coupler 110 can be screwed is formed from the lower end to the upper end in the center of the lower end face.

Although the figure shows that the said female screw hole 122a has a non-threaded part in the upper part, it may be provided with the female screw engraved on the whole. In addition, at the center of the upper end of the female coupler 120, an insertion hole 122b into which the male screw portion ET2 of the connecting rod CR2 is allowed to have a margin is formed so as to reach the female screw hole 122a from the upper end.

The diameter of the insertion hole 122b is larger than the diameter of the male screw portion ET2 of the connecting rod CR2 and smaller than the diameter of the stopper 130. Moreover, at the boundary part between the female screw hole 122a and the insertion hole 122b of the female coupler 120, the engaging part 122c comprised by the annular surface is formed.

Moreover, the female coupler 120 is provided with one or more through-holes 122d which reach the female screw hole 122a from the outer surface at intervals in one or the circumferential direction. The through hole 122d is for inserting a tool for tightening the fixing screw 140 into the female screw hole 133a of the stopper 130 from the outside. The shape of the through hole 122d may be an ellipse or a polygon other than a circular shape. Is a minimum enough to insert a screw tool.

Although the number of the through-holes 122d may be one, the hardening | curing material demonstrated later depending on the direction of the female coupler 120 in the state which the screwing of the female coupler 120 with respect to the male coupler 110 is completed. Since the injection operation may not be performed, it is preferable to provide two or more through holes 122d.

In addition, a tool engagement portion 122e is formed at an outer upper end of the female coupler 120. In the drawing, the tool engaging portion 122e is composed of a plurality of concave portions arranged at equal angle intervals around the upper surface of the female coupler 120. However, the hexagonal portion, the quadrangular portion, and the like are included in the tool engaging portion 122e. ) May be used.

The stopper 130 is preferably made of a hexagonal fixing nut 130a, the diameter of which is smaller than the diameter of the female screw hole 122a of the female coupler 120 and larger than the diameter of the insertion hole 122b. The hexagonal fixing nut 130a of the stopper 130 is formed with a female screw hole 133a reaching the female screw hole 133c from the outer surface.

The formation position of the said female screw hole 133a is arbitrary, and may be formed in the edge part shown in FIG. 2A, or the flat part shown in FIG. 2B. The number of the female screw holes 133a may be one, but depending on the direction of the stopper 130 screwed to the male screw portion ET2, the fixing screw 140 may be tightened by the screw tool described later. In order to prevent this from happening, it is preferable that two female screw holes 133a are provided as shown in Figs. 2A and 2B or three as shown in Figs. 2C and 2D. Of course, four or more female threaded holes 133a may be provided in the hexagonal fixing nut 130a of the stopper 130.

The fixing screw 140 mounted on the stopper 130 is circumferential in its entirety, and the outer surface of the fixing screw 140 is formed with a male screw portion (unsigned) that can be screwed into the female screw hole 133a of the hexagonal fixing nut 130a. It is.

Further, at one end of the fixing screw 140, a tool engaging portion (unsigned) consisting of a negative groove, a positive groove, a hexagonal recess, or the like is formed. In the above embodiment, the stopper 130 is externally threaded by forming the female threaded hole 133a in the hexagonal fixing nut 130a of the stopper 130 and tightening the fixing screw 140 in the female threaded hole 133a. Fixing to (ET2) was shown.

However, as shown in FIG. 2E, at least one through hole 133b reaching the female screw hole 133c from the outer surface of the hexagonal fixing nut 130a of the stopper 130 is formed at the same time as the female screw hole 133a. The stopper 130 can be fixed to the male screw portion ET2 even when the press-fit pin 150 that can be press-fitted into the through hole 133b is used instead of the fixing screw 140.

In this case, the hexagonal fixing nut 130a of the stopper 130 temporarily fixed with the press-fit pin 150 is screwed into the male screw part ET2 to the through hole 122d and the stopper 130 of the female coupler 120. After the alignment with the press-fit pin 150 fixed, the press-fit tool is inserted into the through-hole 122d from the outside of the female coupler 120, and the inserted push-in tool is beaten with a hammer or the like to press-fit the pin 150 ), The hexagonal fixing nut 130a of the stopper 130 may be firmly pushed onto the male screw portion ET2.

In addition, in the above embodiment, the female coupler 120 is inserted into the male screw part ET2 from the outside, and then the hexagonal fixing nut 130a of the stopper 130 which temporarily fixes the fixing screw 140 or the press-fit pin 150 may be received. Although it is shown that the screw is coupled to the screw portion ET2, the fixing screw 140 or the press-fit pin 150 is not fixed to the stopper 130 after screwing to the male screw portion ET2, and then the fixing screw 140 or The female screw hole of the hexagonal fixing nut 130a is fixed to the fixing screw 140 or the pressing pin 150 from the outside of the female coupler 120 through a through hole 122d having a size into which the pressing pin 150 can be inserted. It may be inserted into 133a or through-hole 133b.

In addition, although the through-hole 122d was formed in the female coupler 120 in the above-mentioned embodiment, the male screw part 120 was inserted from the female coupler 120 in the state which inserted the female coupler 120 into the male screw part ET2 from the outside. The end of the ET2 is protruded, and a fixing screw 140 or a press-fit pin 150 is directly installed from the outside in the female screw hole 133a or the through hole 133b of the stopper 130 screwed to the protrusion. In this case, the through hole 122d is not necessarily required.

And the connector 100 according to the present invention, as shown in Figures 3a and 3b, the locking means 160 to prevent the stopper 130 is separated from the male screw portion (ET2) of the connecting rod (CR2) It is to be provided. As shown in FIGS. 2A to 2E, the stopper 130 is formed of a hexagonal fixing nut 130a screwed to the male screw portion ET2 of the connecting rod CR2, and the locking means 160 is The fixing nut cap 160a is inserted into the outer surface of the hexagonal fixing nut to prevent the fixing screw 140 or the press-fit pin 150 from falling out from the holes 133a and 133b of the fixing nut 130a. .

The fixing nut cap 160a preferably has a hexagonal edge surrounding the hexagonal side surface of the stopper 130 formed of the fixing nut 130a, and an outer shell 162 plastically deformed by pressure from the outside, and the outer shell. It is formed integrally on the inner side of 162, and consists of a double-sided structure of the endothelium 164 made of a material having elasticity.

In addition, the shell 162 is made of a corrosion resistant material against moisture, including aluminum, copper, copper, or stainless steel, and the shell 164 is made of an elastic material of urethane material. Through this structure, when the fixing nut cap 160a is pressurized from the outside after being mounted on the stopper 130, the outer shell 162 is plastically deformed and more integrally compressed to the stopper 130, and the inner shell 164 Is elastically in close contact with the stopper 130.

Meanwhile, as shown in FIGS. 4A and 4B, the stopper 130 is formed of a fixing bolt 170 that is coaxially screwed to the inner side of the connecting rod CR2 at the end of the connecting rod CR2. The locking means 160 includes a male screw part 172 having a screw direction formed in the fixing bolt 170 as opposed to a male screw part ET2 of the connecting rod CR2, and a male screw part 172 of the fixing bolt. ) Is an inner female thread portion 174 of the connecting rod (CR2) formed to be screwable.

The fixing bolt 170 of the stopper 130 is smaller than the diameter of the female threaded hole 122a of the female coupler 120 and larger than the diameter of the insertion hole 122b.

And the screw direction of the male screw portion 172 formed on the fixing bolt 170 is formed opposite to the male screw portion (ET2) screw direction of the connecting rod (CR2). Therefore, the female coupler 120 descends while rotating along the male screw portion ET2 of the connecting rod CR2, and the upper engaging portion 122c contacts the head of the fixing bolt 170 of the stopper 130. And, but to rotate the fixing bolt 170, this rotation direction is such that the male screw portion 172 of the fixing bolt 170 is more firmly coupled to the inner female screw portion 174 of the connecting rod (CR2) Because of this fixing bolt 170 is more firmly coupled to the connecting rod (CR2).

In addition, since the fixing bolt 170 is larger than the diameter of the insertion hole 122b of the female coupler 120, the female coupler 120 is prevented from falling further and is stopped.

Therefore, the connector 100 according to the present invention not only can perform the interconnection of concrete parts simply and satisfactorily, but also effectively prevents the mutual separation between the components of the connector 100 once coupled through the connector 100. By doing so, the concrete parts can be connected to each other in good condition.

In the connecting structure of the present invention using the connector 100 of the present invention as described above, as shown in FIG. 5, the male coupler 110 is connected to one of the connecting rods of the first and second concrete parts PC1 and PC2. The female coupler 120 is installed on the exposed portion (male screw portion), and the female coupler 120 is screwed to the exposed portion (male screw portion) of the connecting rods on the other side of the first and second concrete parts PC1 and PC2.

When the male coupler 110 is installed on the connecting rod CR1 of the first concrete part PC1 as described above, the lock nut RN is screwed to the male screw part ET1 of the connecting rod CR1 to form the deepest part ( It is located in the outermost part, and then the female threaded hole 111b of the male coupler 110 is screwed into the male threaded portion ET1.

In addition, when the female coupler 120 is installed on the connecting rod PC2 of the second concrete part PC2, the lock nut RN is screwed to the male threaded portion ET2 of the connecting rod PC2 to be located at the deepest part. Then, the female coupler 120 is inserted into the male screw portion ET2 from the outside through the insertion hole 122b. Next, the stopper 130 temporarily fixing the fixing screw 140 while the female coupler 120 is lifted up is screwed to the male screw portion ET2. When screwing the stopper 130 to the male screw portion ET2, the fixing screw 140 temporarily fixed to the stopper 130 faces the outside (left side in FIG. 5).

Then, the female coupler 120 is lowered from the position of FIG. 5, and if necessary, the female coupler 120 is turned to fix the through-hole 122d of the female coupler 120 to the stopper 130. Align with screw 140. Next, a screw tool suitable for the tool engagement portion of the fixing screw 140 is inserted into the through hole 122d from the outside of the female coupler 120, and the fixing screw 140 is firmly tightened by the inserted screw tool. The stopper 130 is fixed to the male screw portion ET2.

In addition, when connecting the 1st concrete part PC1 and the 2nd concrete part PC2, as shown in FIG. 6, the connection surface of the connection surface PC1a of the 1st concrete part PC1, and the 2nd concrete part PC2 is shown. (PC2a) is combined through the packing (not shown).

In this case, since the positions of the recesses FP1 of the first concrete part PC1 and the recesses FP1 of the second concrete part PC2 are substantially coincident with each other, the joint surfaces PC1a and PC2a are combined with each other. In this state, the axis CL1 of the male screw portion ET1 exposed in the recess FP1 and the axis CL2 of the male screw portion ET2 exposed in the recess FP2 are substantially straight.

Next, the female coupler 120 is screwed onto the male screw part 111a of the male coupler 110 by turning the female coupler 120 to the fingertip while keeping the male coupler 110 at the fingertip. As shown in FIG. 7, the female coupler is engaged with the fastening tool suitable for this in the tool engaging portion 111e of the male coupler 110 in a place where screwing by the fingertip becomes difficult. A fastening tool suitable for this is engaged with the tool engagement portion 122e of the 110 to continue screwing the female coupler 120 to the male coupler 110.

As a result, a pulling force indicated by a thick arrow is applied to the connecting rod CR1 of the first concrete part PC1 through the male coupler 110, and at the same time, the female coupler 120 and the stopper 122c are provided. A pulling force indicated by a thick arrow is applied to the connecting rod CR2 of the second concrete part PC2 through the engaging stopper 130 to connect the connection surface PC1a and the second concrete part of the first concrete part PC1. The connection surface PC2a of the PC2 is press-bonded through the packing, and the first concrete part PC1 and the second concrete part PC2 are connected as they are in the press-bonded state.

An annular gap (lead) exists between the insertion hole 122b of the female coupler 120 and the male screw portion ET2 inserted into the insertion hole 122b. Can be finely adjusted in the direction orthogonal to the axis CL2 of the male screw portion ET2, so that the axis of the male screw portion ET1 in the state where the first concrete component PC1 and the second concrete component PC2 are combined, Even when there is a deviation between the axis CL2 of the CL1) and the male screw portion ET2, the female coupler 120 to the male coupler 110 can be properly screwed using the above margin.

In addition, the amount of movement of the female coupler 120 at the time of screwing is restricted by the stopping portion 122c in contact with the stopper 130, and the stopper 130 is connected to the connecting rod ( It is fixed to the male screw portion ET2 of the CR2, and completely prevents the fixing screw 140 or the press-fit pin 150 from being pulled out through the locking means 160 of the fixing nut cap 160a.

Therefore, when the female coupler 120 is screwed to the male coupler 110, the stopper 130 is reliably prevented from being shifted due to the effect of turning together when screwing. Therefore, as described above, the interconnection of the first concrete part PC1 and the second concrete part PC2 by screwing the female coupler 120 to the male coupler 110 can be accurately performed.

In addition, after the screw coupling operation of the female coupler 120 with respect to the male coupler 110 is completed, tighten the lock nut (RN) of the male coupler 110 side using a fastening tool such as a wrench and the coupler 110. At the same time, the lock nut (RN) on the female coupler 120 side is tightened by using a fastening tool such as a wrench to press-fit the female coupler 120.

Next, a hardening material such as an epoxy resin is injected into the space in the connector 100 from the through-hole 122d of the female coupler 120, and mortar or the like is formed in the concave portion FP1 and the concave portion FP2 which are continuous to each other. Fill the hardener.

As described above, the first concrete part PC1 and the second concrete part PC2 are connected to each other, and the above-described work is repeated to build concrete structures such as waterways and retaining walls.

As described above, according to the embodiment of the connecting structure of the present invention, the male coupler 110 is installed on the connecting rod PC1 of the first concrete part PC1 and the female coupler 120 is connected to the second concrete PC2. The coupling coupler (PC2a) of the first concrete part (PC1) and the connecting surface (PC2a) of the second concrete part (PC2) by combining the female coupler (120) male coupler 110 ), The interconnection between the first concrete part PC1 and the second concrete part PC2 can be satisfactorily performed simply by screwing them into the

In addition, since it is not necessary to apply a load to the interconnecting surface when connecting the first concrete part PC1 and the second concrete part PC2, it is difficult to apply the load from the relationship of the shape and the connection direction of the concrete part or Even when impossible, concrete structures with the desired water tightness or airtightness can be reliably obtained.

In addition, even when there is a deviation between the axis CL1 of the male screw portion ET1 and the axis CL2 of the male screw portion ET2 in a state where the first concrete component PC1 and the second concrete component PC2 are combined. The male coupler 110 may be finely adjusted by using the clearance gap existing between the insertion hole 122b of the coupler 120 and the male screw portion ET2 inserted into the insertion hole 122b. Screw coupling of the female coupler 120 to can be appropriately performed.

In addition, at the time of screwing, the movement amount of the female coupler 120 is restricted by the stopper portion 122c in contact with the stopper 130, and the stopper 130 is connected to the connecting rod CR2 by the fixing screw 140 again. Fixed to the male screw portion ET2, and again prevents the fixing screw 140 from falling out again through the locking means 160, so that the female coupler 120 can be screwed to the male coupler 110. The first concrete part PC1 by screwing the female coupler 120 to the male coupler 110 described above by reliably preventing the screw coupling position of the stopper 130 from shifting together due to the rotation of the stopper 130 together. And interconnection with the second concrete part PC2 can be performed accurately.

In addition, by installing the through-hole 122d for inserting the screw tool for the fixing screw 140 into the female coupler 120, the fixing screw 140 is tightened into the female screw hole 133a to stop the stopper 130 from the male screw portion ( The work fixed to ET2) can be performed from the outside of the female coupler 120. That is, even when the stopper 130 screwed to the male screw portion ET2 hides inside the female coupler 120, the fixing screw 140 is accurately tightened to thereby stop the stopper 130 by the male screw portion ET2. ), It is possible to shorten the length of the male screw portion ET2 exposed in the recess FP2 to reduce the size of the recess FP2, thereby reducing the size of the recess FP2. It is possible to prevent the reduction in strength of the second concrete part PC2 that is dependent.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

1 is an exploded view of a connector and a connecting structure according to the present invention;

2A to 2E are explanatory views showing the stopper shown in FIG. 1 and a modification thereof;

3A and 3B are explanatory views showing stoppers and locking means provided in the connector according to the present invention;

4A and 4B are explanatory views showing stoppers and locking means provided in the connector according to the present invention;

5 is an explanatory view showing a method of installing a connecting structure using the connector according to the present invention;

6 is a cross-sectional view showing a structure in which a connection structure is installed using a connector according to the present invention;

7 is a cross-sectional view taken along the line A-A of FIG.

<Description of Symbols for Major Parts of Drawings>

100 ..... Connector of the present invention

110 .... Male coupler 111a .... Male thread

111b ... female threaded hole 120 ... female coupler

122a ... female threaded hole 122b .... insertion hole

122c ... stop 122d .... through hole

130 ... stopper 130a .... fixing nut

133a ... female thread hole 133b through hole

133c .... Female thread hole 140 .... Fixed screw

150 ... push-in pin 160 .... locking means

160a ... Cap nut 162 .... Sheath

164 .. Endothelial 170 .... Fixed bolt

172 .... Fixed bolt male thread 174 .... Connecting rod female thread

PC1 ... 1st concrete part PC1a ... connection surface

FP1 ... recess CR1 .... connecting rod

PC2 ... 1st concrete part PC2a ... connection surface

FP2 ... recess CR2 .... connecting rod

ET2 ... male thread

Claims (10)

A connecting rod is a connector used when interconnecting concrete parts embedded so that the male threaded portion of the tip is exposed. A male coupler (110) having a male screw portion (111a) on the outer surface and having a female screw hole (111b) that is screwable to the male screw portion of the connecting rod from one end to the other end; The female threaded hole 122a that can be screwed into the outer male threaded portion 111a of the male coupler is directed from one end to the other, and the male threaded portion of the connecting rod has an allowable insertion hole 122b from the other end. A female coupler (120) which has a female screw hole and has a stop portion (122c) hooked to a boundary portion between the female screw hole and the insertion hole; After inserting the female coupler 120 from the outside of the male threaded portion of the connecting rod through the insertion hole 122b, the female coupler is screwed to the male threaded portion of the connecting rod to limit the movement of the female coupler by cooperation with the stopper. And a fixing nut 130a screwed to the male threaded portion of the connecting rod, and the fixing nut has at least one through hole 133b reaching the center of the female threaded hole from an outer surface thereof. A stopper 130 inserted into each of the through holes 133b and having a fixing screw 140 or a press-fit pin 150 for fixing the fixing nut to the male screw portion of the connecting rod; And In order to prevent the stopper 130 from being separated from the male screw portion of the connecting rod, the stopper 130 is inserted into the outer surface of the fixing nut 130a to prevent the fixing screw or the press-fit pin from falling out from the through hole 133b of the fixing nut. And a locking means (160) consisting of a fixed nut cap (160a). delete delete The method of claim 1, wherein the fixing nut cap has a hexagonal edge surrounding the hexagonal side of the fixing nut, the outer shell is plastically deformed by the pressure from the outside, and integrally formed on the inner surface of the outer shell, and has an elastic force A connector comprising an endothelial double-sided structure made of a material. The connector as claimed in claim 4, wherein the fixing nut cap is made of a corrosion resistant material having an outer shell including aluminum, copper, copper, stainless steel, or the like, and the inner shell is made of a urethane material. A concrete part having a concave portion having an opening on a surface adjacent to the connecting surface and a connecting surface, and a connecting rod embedded in the part so that the male screw portion at the tip thereof is exposed in the concave portion; It is provided with a connector for connecting concrete parts by applying a pulling force to the connecting rods in the state in which the concrete parts are combined through the connecting surface, The coupler has a male screw portion on an outer surface thereof, and has a male coupler hole that can be screwed onto the male screw portion of the connecting rod from one end to the other end, and a female screw hole that can be screwed on the outer male portion of the male coupler on one side. A female coupler having the female screw hole from the other end to the female screw hole from the other end with the male threaded portion of the connecting rod toward the other end from the end and having a margin; And a stopper through which the female coupler is inserted from the outside of the male threaded portion of the connecting rod through its insertion hole and then screwed into the male threaded portion of the connecting rod to restrict the movement of the female coupler by cooperation with the stopper portion, and the stopper. With locking means to prevent separation from the male threaded portion of the connecting rod. It is uh, The male coupler of the connector is installed by screwing a female screw hole into a male screw portion in a recess of one concrete part, and the female coupler is inserted from the outside through the insertion hole in a male screw portion in a recess of the other concrete part. A stopper is installed on the male thread, and the female coupler is screwed to the male coupler while the connecting surfaces of the concrete parts are combined to impart a pulling force to the connecting rods to connect the concrete parts. Connection structure. 7. The stopper of claim 6, wherein the stopper comprises a fixing nut screwed to the male threaded portion of the connecting rod, and the fixing nut has at least one hole reaching the center of the female threaded hole from an outer surface thereof. A fixing screw or a press-fit pin that is inserted into each hole to fix the fixing nut to the male thread of the connecting rod; The locking means is inserted into the outer surface of the fixing nut connection structure, characterized in that consisting of a fixing nut cap to prevent the fixing screw or the press-fit pin from falling out from the hole of the fixing nut. The method of claim 7, wherein the fixing nut cap has a hexagonal edge surrounding the hexagonal side surface of the fixing nut, the outer shell is plastically deformed by the pressure from the outside, and integrally formed on the inner surface of the outer shell, and has an elastic force A connecting structure comprising an endothelial double-sided structure made of a material. The connecting structure of claim 8, wherein the fixing nut cap is made of a corrosion resistant material having an outer shell of aluminum, copper, copper, stainless steel, or the like, and the inner shell is made of a urethane material. 7. The stopper according to claim 6, wherein the stopper is coaxially screwed to the inside of the connecting rod at the end of the connecting rod, and the diameter of the head portion is made of a fixing bolt smaller than the female screw hole diameter of the female coupler and larger than the diameter of the insertion hole. And the locking means comprises a male screw portion having a screw direction opposite to the male screw portion of the connecting rod on the fixing bolt, and an inner female screw portion formed on the connecting rod so that the male screw portion of the fixing bolt is screwable. Structure.

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