JP2008057115A - Coupler for concrete block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupler for concrete blocks capable of simplifying management including storage and replenishment and facilitating connection work. <P>SOLUTION: Since a coupler body 2 and a connection piece 3 for connecting male screw parts 2A, 2A in its both end parts each other are mutually connected through a connection member 4, the management of these coupler body 2, connection piece 3, and connection member 4 including their storage and replenishment can be simply performed all together. Since a pair of insertion holes 3A, 3A of the connection piece 3 are positioned for both ends of the coupler body 2 by butting the connection member 4 against a stopper ring 2C in a central part 2B of the coupler body 2, the work for connecting the male screw parts 2A, 2A in both end parts of the coupler body 2 with the connection piece 3 becomes very easy. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a concrete block connector for connecting concrete blocks laid side by side on the laying surface side by side.

  As a concrete block connector for connecting concrete blocks laid side by side on the laying surface in the front, back, left, and right, four loop rebars projecting parallel to the laying surface from the corner of the concrete block are connected together. Conventional concrete block connectors are generally known.

  As this type of concrete block connector, for example, Patent Document 1 discloses a connector including a main body made of a bifurcated bent bar, and a long plate-like spacer that connects both ends of the main body. Is described. Here, a circumferential groove is formed on the outer periphery of both ends of the main body, and the groove bottom of the circumferential groove forms a narrow portion. On the other hand, the long plate-like spacer is formed with a pair of through holes through which both ends of the main body are inserted, and a pair of narrow long holes extending from each through hole toward both ends of the spacer. .

In such a connecting tool described in Patent Document 1, in order to connect both ends of the main body via the spacer, first, the both ends of the main body are elastically deformed so as to match the pair of through holes of the spacer. Through the through hole. And the elastic deformation of the both ends of a main body is cancelled | released by matching the narrow part of the groove bottom of the circumferential groove formed in the both ends of a main body with a pair of long hole of a spacer. By doing so, the narrow portions at both ends of the main body are fitted into the pair of long holes of the spacer, and the main body and the spacer are connected.
Japanese Patent Laid-Open No. 11-13727 (Abstract)

  By the way, in the connection tool as described in Patent Document 1, since the two are separated as independent parts before the connection between the main body and the spacer, the main body and the spacer must be managed separately. There is a problem that management such as storage and replenishment is troublesome. In addition, since it takes time and labor to align and elastically deform both ends of the main body by aligning the pair of through holes of the spacer, there is a problem that the workability of the connecting operation between the main body and the spacer is poor.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a concrete block connector that is easy to store and replenish, and that can be easily connected.

  The connecting device for a concrete block according to the present invention is for a concrete block in which four looped reinforcing bars projecting parallel to the laying surface are connected together from a corner portion of the concrete block laid side by side on the laying surface. A coupling tool comprising a bifurcated bent bar having a side shape that penetrates two adjacent loop-shaped reinforcing bars from above and bends the other two loop-shaped reinforcing bars from below. It has a pair of insertion holes that penetrate both ends of the main body and the bifurcated connector body, and is secured by nuts that are screwed into both ends of the connector body that pass through the pair of insertion holes. A connecting piece for connecting both ends of the connecting tool main body, and the connecting piece is connected to a central portion of the connecting tool main body straddling the two looped reinforcing bars via a connecting member. Are, the connecting member is characterized by being configured to position the pair of insertion holes of the connecting piece on the line in the width direction through the two ends of at least the connector body.

  In the concrete block connector according to the present invention, since the connector main body and the connecting piece for connecting both ends thereof are connected via the connecting member, management of storage and replenishment of these parts is easy. . And since the pair of insertion holes of the connecting piece can be positioned at least on the line in the width direction passing through both ends of the connecting tool main body by the connecting member, the connecting work between the connecting tool main body and the connecting piece becomes extremely easy. .

  Here, the connecting member may be a bar or a plate whose one end is fixed to the connecting piece and whose other end is pivotally attached to the central portion of the connector main body. In this case, by swinging the connecting piece in the vertical direction via the connecting member, the pair of insertion holes of the connecting piece is positioned on a line in the width direction passing through at least both ends of the connector main body.

  Here, in order to reliably position the pair of insertion holes of the connecting piece with respect to both ends of the connector main body, a positioning portion is provided at the center of the connector main body, and the connecting member is connected to the connector by the positioning portion. It is preferable to position in the longitudinal direction of the central part of the main body.

  Moreover, the said connection member can be made into the flexible wire or the string material which can position a pair of insertion hole of a connection piece to the both ends of a connection tool main body in a tension | tensile_strength state. In this case, the pair of insertion holes of the connection piece are positioned at both ends of the connection tool main body by pulling and tightening the slack connection member with the connection piece.

  According to the concrete block connector according to the present invention, since the connector main body and the connecting piece for connecting both ends thereof are connected via the connecting member, management of storage and replenishment of these parts is performed at once. And can be done easily.

  And since the pair of insertion holes of the connecting piece can be positioned on the line in the width direction passing through both ends of the connecting body by the connecting member, the connecting work between the connecting body and the connecting piece can be performed very easily. Can do.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of a concrete block connector according to the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 of the accompanying drawings is a plan view showing a laying state of concrete blocks connected to each other by a concrete block connector according to an embodiment, and FIG. 2 connects the concrete blocks shown in FIG. It is a top view of the connection tool for concrete blocks of one embodiment.

  As shown in FIG. 1, the concrete blocks CB that are connected to each other by the concrete block connector according to the embodiment are laid side by side on the laying surface in front, back, left, and right, and in the corner portion of each concrete block CB, Each of the loop rebars RR protrudes in parallel with the laying surface.

  Here, as shown in FIG. 2, the concrete block connector 1 according to one embodiment is provided with four loop-shaped reinforcing bars that protrude from the corners of the four front, rear, left, and right concrete blocks CB and gather in one place. RR1 to RR4 are connected to each other, and include a connector main body 2, a connecting piece 3, a connecting member 4, and a nut N.

  The connector main body 2 is made of a steel bar bent into a bifurcated shape that bends as shown in FIG. 3, and both ends of the pair of adjacent loop rebars RR1 and RR2 shown in FIG. It has a side shape that penetrates from above and is bent so as to penetrate another set of looped reinforcing bars RR3 and RR4 from below.

  Then, male screw portions 2A and 2A to which nuts N and N are screwed are formed at both ends of the connector main body 2, respectively. Further, a stopper ring 2C as a positioning portion is fixed to the central portion 2B of the connector main body 2, that is, the central portion 2B straddling the pair of looped reinforcing bars RR1 and RR2 shown in FIG. 2 by welding or the like. .

  The connecting piece 3 is made of an iron plate or the like formed in a long plate shape, and a pair of insertion holes 3A and 3A through which the male screw portions 2A and 2A at both ends of the connector main body 2 are inserted are formed at both ends thereof. Yes.

  The connecting member 4 is made of an iron plate or the like formed in a long plate shape, and a front end portion of one end thereof is fixed to a central portion of the rear edge of the connecting piece 3 by welding or the like in a state orthogonal to the connecting piece 3. A pivot hole 4A is formed at the rear end of the other end of the connecting member 4 so as to be loosely fitted to the connector main body 2 made of a bar. The connecting member 4 is swingably fitted in the central portion 2B of the connector main body 2 in the vertical direction by loosely fitting the pivot hole 4A at the rear end portion thereof to the central portion 2B of the connector main body 2. It is pivotally attached.

  Here, the length of the connecting member 4 is set such that the pair of insertion holes 3 </ b> A, 3 </ b> A of the connecting piece 3 can be positioned on a line in the width direction passing through both ends of the connecting tool body 2. The connecting member 4 abuts against a positioning stopper ring 2 </ b> C fixed to the central portion 2 </ b> B of the connector main body 2, thereby connecting the pair of insertion holes 3 </ b> A and 3 </ b> A of the connector piece 3 to both ends of the connector main body 2. Can be positioned.

  Using the concrete block connector 1 according to one embodiment configured as described above, an example of connecting the four loop rebars RR projecting from the corner portion of the concrete block CB to each other is shown. First, as shown in FIG. 4, the central part 2B of the connector main body 2 is suspended and the male screw parts 2A, 2A at both ends are positioned below the central part 2B. In this case, it is preferable to suspend the central portion 2B of the connector main body 2 with a bifurcated hook F fixed to the tip of an appropriate rope R.

  Next, the male threaded portions 2A and 2A at both ends located at the lower portion of the suspended connector body 2 are respectively penetrated from above the pair of loop-shaped reinforcing bars RR1 and RR2 shown in FIG. Then, by pulling the rope R over the portion where the corner portions of the two concrete blocks CB and CB on which a pair of looped reinforcing bars RR1 and RR2 are projected are connected, both ends of the connector body 2 are caused. The male threaded portions 2A and 2A of the lever are respectively penetrated from the lower side inside the other pair of loop-shaped reinforcing bars RR3 and RR4.

  Thereafter, the rear end portion of the connecting member 4 is abutted against the stopper ring 2 </ b> C of the central portion 2 </ b> B of the connecting device body 2 to position the connecting member 4 in the width direction of the connecting device body 2. Then, the connecting piece 3 is moved up and down appropriately so that the insertion holes 3A and 3A at both ends thereof are aligned with both ends of the connector main body 2, and the male screw portions 2A and 2A at both ends of the connector main body 2 are inserted into the insertion holes 3A and 3A. To penetrate.

  Thereafter, nuts N and N are screwed into the male screw portions 2A and 2A at both ends of the connector main body 2 to prevent the connecting piece 3 from being pulled out. As a result, the male screw portions 2A and 2A at both ends of the connector main body 2 are connected via the connecting piece 3, and project from the corner portions of the four front, rear, left and right concrete blocks CB as shown in FIG. The four loop-shaped reinforcing bars RR1 to RR4 that are provided and gathered at one place are connected to each other by the concrete block connector 1 according to one embodiment.

  As described above, according to the concrete block connector 1 of one embodiment, the connecting piece 3 is attached in a state where the rear end portion of the connecting member 4 is abutted against the stopper ring 2C of the central portion 2B of the connector body 2. By appropriately moving up and down, the insertion holes 3A, 3A at both ends of the connecting piece 3 are positioned and matched with both ends of the connecting tool body 2, so that the connecting work between the connecting tool body 2 and the connecting piece 3 is extremely easy. It can be carried out. The stopper ring 2C can be omitted as appropriate.

  Moreover, since the connection tool main body 2 and the connection piece 3 which connects the external thread part 2A, 2A of the both ends are connected via the connection member 4, these connection tool main body 2, the connection piece 3, and the connection member 4 are connected. Management such as storage and replenishment can be easily performed in a lump.

  The concrete block connector according to the present invention is not limited to the concrete block connector 1 according to the embodiment described above. For example, the connecting member 4 illustrated in FIG. 3 is not limited to a plate formed in a long plate shape, and may be formed of a bar. Moreover, the connection piece 3 and the connection member 4 may be integrally molded by an appropriate synthetic resin.

  Moreover, the shape of the center part 2B of the connector main body 2 shown in FIG. 3 can be made into the shape bent in a mountain shape as shown in FIG. In this case, by positioning the rear end portion of the connecting member 4 at the top portion 2D of the central portion 2B bent in a mountain shape, the connecting member 4 can be positioned even if the stopper ring 2C is omitted.

  Further, as shown in FIG. 7, the connecting member 4 shown in FIG. 3 has one end fixed to the connecting piece 3 by welding or the like and the other end fixed to the central portion 2B of the connector main body 2 by welding or the like. You may comprise with flexible wire materials, such as a wire and a rope. Further, the connecting member 4 can be changed to a string material having one end portion connected to the connecting piece 3 and the other end portion connected to the central portion 2B of the connector main body 2. In these cases, the pair of insertion holes 3 </ b> A and 3 </ b> A of the connection piece 3 are positioned at both ends of the connector main body 2 by pulling and tightening the loose connection member 4 made of a wire or string material with the connection piece 3.

It is a top view which shows the laying state of the concrete block mutually connected by the coupling tool for concrete blocks which concerns on one Embodiment of this invention. It is a top view of the connection tool for concrete blocks of one embodiment which connects the concrete blocks shown in Drawing 1 mutually. It is a perspective view which shows the structure of the coupling tool for concrete blocks shown in FIG. It is a side view which shows the state which suspended the connector main body as a part of connection operation | work using the connector for concrete blocks shown in FIG. It is a top view corresponding to FIG. 2 which shows four loop-shaped reinforcing bars connected using the connector for concrete blocks shown in FIG. It is a perspective view which shows the modification of the coupling body of the coupling tool for concrete blocks shown in FIG. It is a perspective view which shows the modification of the connection member of the connection tool for concrete blocks shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Concrete block connection tool 2 ... Connection tool main body 2A ... Male screw part 2B ... Center part 2C ... Stopper ring 3 ... Connection piece 3A ... Insertion hole 4 ... Connection member 4A ... Pivoting hole N ... Nut R ... Rope F ... Hook CB ... Concrete block RR ... Loop rebar

Claims (4)

A concrete block connector for connecting together four loop-shaped reinforcing bars projecting in parallel with the laying surface from a corner portion of the concrete block laid side by side on the laying surface,
A connector main body made of a bifurcated bent bar having a side shape that penetrates two adjacent loop-shaped reinforcing bars from above and bends the other two loop-shaped reinforcing bars from below;
The coupling tool has a pair of insertion holes that penetrate both ends of the bifurcated coupling body, and is secured by nuts that are screwed into both ends of the coupling body that penetrates the pair of insertion holes. A connecting piece for connecting both ends of the main body,
The connecting piece is connected to a central portion straddling the two loop-shaped reinforcing bars in the connector main body so as to be positioned via a connecting member,
The connecting member for a concrete block, wherein the connecting member is configured to be capable of positioning a pair of insertion holes of the connecting piece on a line in a width direction passing at least both ends of the connecting tool main body.   2. The concrete block according to claim 1, wherein the connecting member is made of a bar or a plate having one end fixed to the connecting piece and the other end pivotally attached to a central portion of the connector main body. Connecting tool.   The central portion of the connector main body is provided with a positioning portion that positions the connection member in the longitudinal direction so that a pair of insertion holes of the connection piece can be positioned at both ends of the connector main body. The connecting device for concrete blocks according to claim 2.   The connection member is made of a flexible wire or string, and is configured to be capable of positioning a pair of insertion holes of the connection piece at both ends of the connection tool main body in a tension state. The connecting tool for concrete blocks according to 1.

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