JPH09329113A - Turnbuckle type connecting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify handling operation by forming a screw part which is screwed and inserted in the screw hole of an outer rotor having at least one of the screw holes in a spiral direction which are mutually opposed, and binding and connecting by the rotation of the outer rotor, steel striped rods to each other, which are oppositely arranged under a restricted condition. SOLUTION: Screw parts 4b, 4'b in a spiral direction, which are mutually opposed and formed at peripheral ends of steel striped rods 4, 4' in the shaft length direction of side groove block side walls mutually connected, are screwed in screw holes 3, 3' of nut members 2, 2' internally mounted in the opposed wall surfaces 1b of an outer rotor 1. When the outer rotor 1 is rotated, for example, in a clockwise direction, the steel striped rods 4, 4' are mutually stressed and connected. Even though the axial centers of the steel striped rods 4, 4' are shifted, the peripheral ends of the steel striped rods 4, 4' are inserted in the penetrating holes 1a1 of the wall surfaces 1a, and screwed and inserted in the distinct nut members 2, 2', therefore the screwing in operation of the steel striped rods 4, 4' can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turnbuckle type connector, for example, a gutter block, an L-shaped retaining wall block, a retaining wall block, a box culvert, etc. manufactured in a factory, an electric wire, a telephone line, a gas pipe, and the like. Structures for connecting concrete products such as joint grooves for accommodating water pipes and sewer pipes, steel bars such as reinforcing bars used for reinforcement in building structures or civil engineering structures, and connecting bars by simple handling It is a solid connection.

[0002]

Conventionally, concrete products, such as gutters,
Concrete products such as retaining gutters, box culverts, electric wires, telephone lines, gas pipes, water pipes, and joint ditches buried underground to accommodate sewer pipes are used for transportation, storage, and even on-site construction. For convenience of work, the mold was assembled on site and the concrete was placed in this form, instead of on-site casting, production was done at the factory and it was made into blocks. The concrete product thus produced, for example, the gutter block a as shown in FIG. 11, is transported to the construction site. Then, in order to connect the side groove blocks a, to each other, the side wall portions a ₁ and a ₁ facing each other of the side groove block a and the bottom wall portion a ₂ on the lower surface of the side wall portions a ₁ and a ₁ are connected.
By welding the joining ends of the steel reinforcing rods b and b'inserted in the holes respectively provided in the axial direction to the steel reinforcing rods b, b'by pressing the joining ends together via a binding muscle.
b'Connect each other. After that, a filler such as cement mortar is packed between the joint ends of the gutter blocks a and a to prevent water leakage. Another method for connecting concrete products such as the gutter block a is shown in FIGS. 12 and 13. This is because the side wall substantially U-shaped connecting metal fitting f having the bolt insertion hole d in the end wall portion e is provided in several notch concave portions g provided in correspondence with the abutting ends of the side groove blocks a. The connection fitting f is attached by embedding the anchor members h, h on the upper surface or the lower surface. Then, after inserting the bolt i into the bolt insertion holes d, d of the connection fittings f, f, the nut k is screwed into the thread portion j of the bolt i, and the connection fittings f, f are tightly connected to each other to form the side groove block a. , A are connected.

[0003]

However, FIG.
As shown in FIG.
The above-described conventional joining method for connecting a to each other is to weld the front ends and the rear ends of the steel reinforcing rods b and b'to each other at the construction site, or to stack the binding bars on the front ends and the rear ends of the steel reinforcing rods b and b '. However, they had to be spliced by pressure welding, and it took a lot of time and effort to connect the concrete products. Further, the connection of the gutter blocks a, a is not uniform depending on the site, and is connected in a straight line state or a curved state depending on the site situation, and thus is varied. Therefore, the above method of connecting the steel reinforcing rods b, b'by welding or the like is not suitable for connecting the side groove blocks a, a in a curved state. In addition, when an external force such as an earthquake, earth pressure, or vibration during running of a car is applied, the connecting points between the steel reinforcing bars b and b ',
In particular, there are inconveniences that the welded portion is easily cut and structurally fragile. Further, as shown in FIGS. 12 and 13, in the other conventional example in which concrete products such as the gutter blocks a and a are connected to each other using the connecting fittings f and f, external force such as earthquake and earth pressure is connected. When added to the portion, there is a problem that the connecting fitting f is deformed or damaged, and further, the connecting fitting f is easily removed from the anchor members h. In addition, the connection work requires much time and labor for the screwing work of the screw portion j of the bolt i and the nut k.

The present invention solves the above-mentioned conventional inconveniences, and a steel reinforcing bar that is structurally opposed to an external force such as an earthquake, earth pressure, and vibration during traveling of a car depending on the situation of the site by a simple handling operation. It is an object of the present invention to provide a turnbuckle-type connecting tool which is easy to manufacture and assemble and which is inexpensive to manufacture by connecting concrete products and the like by tightly connecting and connecting bars.

[0005]

SUMMARY OF THE INVENTION Claim 1 of the present invention has been made in view of the above-mentioned problems, and an exterior having axially opposing wall members having at least one of screw holes in opposite spiral directions. The rotating body and the steel reinforcing rod provided with a screw part to be screwed into the screw hole and facing each other in a state in which the mutual rotation is restricted, and the steel rotating rod is rotated by rotating the exterior rotating body. Adopted a means of tightly connecting each other at the screw insertion part

According to a second aspect of the present invention, in the outer rotating body according to the first aspect, the outer shape is formed into a substantially box shape, and at least one of the wall members is a nut material, and the nut material is the nut material. A means has been adopted, which is characterized in that it is installed inside the exterior rotating body so as to be movable in the axial direction and lockable in a direction intersecting with the axial direction.

According to a third aspect of the present invention, in the first or second aspect, any one of the steel reinforcing rods can be inserted into at least one of the facing wall portions in the axial direction of the exterior rotating body. The means that an insertion hole is provided was adopted.

According to a fourth aspect of the present invention, at least one of the wall members facing each other according to the first aspect is a nut member, and a suitable number of annular exterior rotating members are provided between the wall members including the nut member. The means for fitting the wall surface members to each other by fitting them in the axial direction is adopted.

According to a fifth aspect of the present invention, the wall members opposed to each other in the first or fourth aspect are nut members, and a suitable number of annular outer rotors are fitted to the nut members in the axial direction. Thus, the means for detachably coupling the nut materials to the exterior rotating body is adopted.

According to a sixth aspect of the present invention, in any one of the second aspect, the fourth aspect, and the fifth aspect, the nut member is press-fitted so as to be able to be fitted into and removed from opposing wall surface portions provided on the exterior rotating body. A threaded cylindrical portion, the outer shape of which is a tapered surface with a tapered outer shape, a slit is formed over the entire length in the axial direction of the tapered surface, and the inner circumferential surface is in any of the opposite spiral directions. A means is adopted in which a screw hole in one direction is provided and at least one screw portion of the steel reinforcing rod is screwed into the screw hole.

According to a seventh aspect of the present invention, in the first aspect, when the screw cylinder portion is dismounted from the exterior rotating body to release the tightening to the taper surface, the screw rod portion of the steel reinforcing rod is shafted. We adopted the means that it is forcibly movable in the long direction.

According to the present invention of claim 8, the external shape of the threaded cylindrical portion having the tapered surface in any one of claims 6 and 7 is either a truncated cone shape, a quadrangular truncated pyramid shape, a hexagonal truncated pyramid shape, or an octagonal truncated pyramid shape. The means of being formed was adopted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention in the case of connecting a gutter block as a concrete product.
This is an example. Reference numeral 1 denotes an exterior rotating body that is rotatably provided in a clockwise or counterclockwise direction. The exterior rotating body 1 includes wall surface portions 1a, 1a facing each other in the axial direction, and the wall surface portion 1
Side wall portions 1b and 1b provided on both left and right sides between a and 1a
And are formed into a substantially box shape. 1c is the exterior rotating body 1
Of the upper surface or the lower surface of at least the opening provided on the upper surface. 1a ₁ is a through hole which is provided the wall portion 1a, the 1a, the end portions of the front and rear of the later steel muscle rods 4, 4 'allows the insertion opposite to the insertion hole 1a _1, 1a _1.

Reference numerals 2 and 2'denominate screw holes 3 in opposite spiral directions.
A nut member forming a wall member having 3 ', and the nut members 2 and 2'are arranged inside the wall portion 1a, 1a so as to face each other in the axial direction of the exterior rotating body 1. Moreover, the nut members 2 and 2'are internally mounted so as to be movable in the axial direction of the exterior rotating body 1 and lockable in a direction intersecting with the axial direction. Further, the outer shape of the nut members 2 and 2 ′ is such that the front hexagonal shape is shown in FIG. 1 so that the nut members 2 and 2 ′ can be locked in a direction intersecting with the axial direction when the nut members 2 and 2 ′ are installed inside the exterior rotating body 1 as described above. Although shown, it is not limited to this and may be a polygon such as a front quadrangle or a front octagon.

4,4 'are concrete products, for example, as shown in FIG.
Left and right side wall portions 5 of the gutter block 5 as shown in FIG.
Steel bars that are arranged to face each other while the rotation is restrained when the gutter blocks 5 are connected by appropriately inserting a plurality of holes into the holes 5a ₁ and 5a ₁ provided in the longitudinal direction of the a and 5a. The opposite ends of these steel reinforcing rods 4, 4 ′ are wall surfaces 1 facing each other in the axial direction of the exterior rotating body 1.
It is inserted into the exterior rotating body 1 through the insertion holes 1a ₁ and 1a ₁ provided in a and 1a. Further, screw rods 4a, 4'a; 4b, 4'b in opposite spiral directions to be screwed into the screw holes 3, 3'are formed at the front and rear outer peripheral ends of the steel reinforcing rods 4, 4 '. . Then, by rotating the exterior rotating body 1 in a clockwise direction, for example, the steel reinforcing rods 4 and 4'are tightly connected and connected to each other at the screw insertion portion.

Reference numeral 6 denotes a threaded portion 4 of the steel reinforcing rods 4, 4'at the front and rear connecting ends of a gutter block 5 as a concrete product.
a, 4'a; 4b, 4'b are correspondingly formed notch recesses, and the exterior rotating body 1 is rotatably accommodated in the notch recesses 6, 6.

The first embodiment of the present invention has the above-mentioned structure, and conveys the gutter blocks 5 and 5 as concrete products as shown in FIG. 2 to the construction site, and connects the gutter blocks 5 and 5 to each other. To do so, first, a desired position of the side groove blocks 5, 5 connected to each other, for example, a hole 5a provided in the side wall portions 5a, 5a opposed to each other in the axial direction in the axial direction.
Threaded portions 4 in opposite spiral directions formed on the front and rear outer peripheral end portions of the steel reinforcing rods 4 and 4'inserted in ₁ , 5a ₁ .
a, 4'a; 4b, 4'b are screw holes provided in the nut members 2 and 2'as wall surface members installed inside the exterior rotating body 1 so as to face the opposite wall surface portions 1a, 1a of the exterior rotating body 1. 3,3 '
Screw it in.

In this way, when the exterior rotating body 1 is rotated, for example, in the clockwise direction, the steel bars in which the screw portions 4a, 4'a; 4b, 4'b are screwed into the screw holes 3, 3'of the nut members 2, 2 '. The rods 4, 4'are tensioned and connected to each other. At this time, the axial cores of the gutter blocks 5 and 5 as concrete products are slightly displaced from each other due to the construction, and even if the axial ends of the steel reinforcing rods 4 and 4'are arranged so as to be offset from each other, The outer peripheral ends of the steel reinforcing rods 4 and 4 ′ are installed inside the exterior rotating body 1 by inserting them into the through holes 1 a ₁ and 1 a ₁ provided in the facing wall portions 1 a 1 a of the exterior rotating body 1. Since it is screwed into the screw holes 3 and 3'provided in the individual nut members 2 and 2 ', the screw portions 4a and 4'a of the steel reinforcing rods 4 and 4'to the screw holes 3 and 3'; 4b and 4 '. The screwing operation of b can be easily performed.

As described above, by being inserted into the holes 5a ₁ provided in the side wall portions 5a, 5a of the gutter blocks 5, 5 as concrete products, they are arranged so as to face each other in the front-rear direction in a state where the rotation is restricted. In order to connect the steel reinforcing rods 4 and 4'to each other, the external rotating body 1 is rotated to cause conflict with the nut members 2 and 2'provided as wall members installed in the external rotating body 1. The steel reinforcing bars 4, 4'in which the screw portions 4a, 4'a; 4b, 4'b are screwed into the screw holes 3, 3'in the spiral direction can be tightly connected to each other, and the connection work is easy. is there. Further, the connecting tool of this embodiment has a simple structure composed of the substantially box-shaped exterior rotating body 1 and the nut materials 2 and 2'inside thereof, and since the number of parts is small, it is not manufactured and assembled. It ’s easy, mass production,
The cost will be low. Moreover, it has a compact design, is light in weight, and can be handled quickly and reliably.

Further, when the gutter blocks 5, 5 ... To be connected are connected in a curved shape in accordance with the difference in the slope of the construction site, the laying condition of the road, and the presence / absence of obstacles, the gutter blocks 5, 5 ... ... Steel reinforcing rods 4 and 4 inserted into the holes 5a ₁ provided in the side wall portion 5a on one side, and steel reinforcing rods 4 ', 4 inserted into the holes 5a ₁ provided in the side wall portion 5a on the other side. The degree of tightness can be adjusted by adjusting the number of rotations of the exterior rotating bodies 1 and 1 for connecting with the ′, and the side groove blocks 5, 5 ... Can be easily connected in a curved shape.

Further, a filler such as cement mortar or synthetic resin is packed between the joint ends of the gutter blocks 5, 5 ... To solidify them, thereby preventing leakage of running water flowing in the gutter blocks 5, 5. Turn off the water. If necessary, a filler such as cement mortar may be added to the steel reinforcing bar 4,
When the front end and the rear end of 4'are packed in the notch recesses 6 and 6 provided at the abutting ends of the gutter blocks 5, 5, ..., The steel reinforcing rods 4, which are connected via the exterior rotating body 1, 4;
The 4'and 4'interconnections are fixed by a filler such as cement mortar. In this way, the exterior rotating body 1 may be prevented from being inadvertently rotated and prevented from being loosened.

When the gutter blocks 5, 5 ... Are connected in this manner, the nut members 2, 2'will be screwed into the threaded portion 4 of the steel reinforcing rods 4, 4 '.
a, 4'a; 4b, 4'b are individually installed inside the exterior rotating body 1 in a screwed state, so that they can be slightly moved to absorb the shock, and The nut members 2, 2'having screw holes 3, 3'by the outer rotating body 1 and the screw portions 4 of the steel reinforcing rods 4, 4 'screwed into the screw holes 3, 3'.
a, 4'a; 4b, 4'b are protected. Therefore an earthquake,
When an external force such as earth pressure or vibration due to running of an automobile is applied, the connecting points of the steel reinforcing rods 4, 4; 4 ', 4' are resistant to compression or tension, deformed and damaged as in the conventional case. It will not be pulled out or pulled out, maintaining a structurally robust connection.

In order to release the connection between the side groove blocks 5, 5, ..., For example, when the exterior rotating body 1 is rotated counterclockwise,
Since the nut members 2 and 2'which are internally mounted in the exterior rotating body 1 so as to be locked in the axially intersecting direction are rotated integrally with the exterior rotating body 1, they are provided in the nut materials 2 and 2 '. From the screw holes 3 and 3 ', the screw portions 4a, 4'a; 4b and 4'b of the steel reinforcing rods 4 and 4' which are screwed into the screw holes 3 and 3'are screwed back. In this way, the steel bars 4, 4'to the nut material 2,
2'and the exterior rotating body 1 can be separated, and the gutter block 5,
The connection of 5 ... Is released.

As shown in FIG. 4, the concrete product is L
Another embodiment of the present invention in the case of the shape retaining wall block 20 is shown. In this embodiment, the leading L-shaped retaining wall block 20 and the trailing L-shaped retaining wall block 2 connected to this are provided.
0 a screw portion 4a provided at the opposing end outer periphery of the steel muscle rods 4, 4 'to be inserted in the axial hole 20a ₁ formed in the direction, 20a ₁ of, 4'a; 4b, the 4'b exterior It is screwed into screw holes 3 and 3'in opposite spiral directions provided in nut materials 2 and 2'provided inside exterior rotating body 1 so as to face wall surfaces 1a and 1a of rotating body 1. Next, by rotating the exterior rotating body 1 in a clockwise direction, for example, the steel rods 4, 4'opposed to each other and screwed into the screw holes 3,3 'of the nut members 2,2'.
The leading L-shaped retaining wall block 20 and the trailing L-shaped retaining wall block 20 are connected to each other by tightly connecting them. Further, in FIG. 4, reference numeral 21 is a base portion. The same parts as those in FIGS. 1 to 3 are indicated by the same reference numerals. Other configurations and operations are the same as those in the above embodiment.

FIG. 5 shows a third embodiment of the present invention in which the concrete product is the retaining wall block 30. In this embodiment, the retaining wall blocks 30, 30 ...
In order to connect continuously, the threaded portions 4a, 4'a; 4b, 4'b provided on the outer peripheries of the opposite ends of the steel reinforcing rods 4, 4'inserted in the longitudinal direction in the retaining wall block 30 are sheathed. After being screwed into the screw holes 3 and 3 ′ of the nut members 2 and 2 ′ inside the exterior rotating body 1 so as to face the wall surfaces 1 a and 1 a of the rotating body 1,
Similar to the first and second embodiments, the steel rotating rods 4 and 4'are tightly connected to each other by rotating the exterior rotating body 1.

However, in this embodiment, as shown in FIG. 5, a retaining wall portion 31 is provided so as to intersect with the rear surface of the retaining wall block 30,
And the vertically long holes 31a, 3 opened in the buttress 31
Retaining wall block 3 by inserting vertical steel reinforcing rods 4 ", 4" in 1a
0 Steel rebar 4, for connecting each other continuously in the longitudinal direction
4'is crossed and arranged. And the retaining wall block 3 of each step
The vertical steel reinforcing bars 4 ″, 4 ″; 4 ″, which are inserted into the holes 31a, 31a formed in the buttress wall 31 of 0 and are arranged to face each other.
Screws 4 "a, 4" provided on the outer circumference of the opposite ends of 4 "
a; by rotating the exterior rotating body 1 in which the nut materials 2 and 2 ′ into which 4 ″ b and 4 ″ b are screwed are rotated, the vertical steel reinforcing bars 4 ″, depending on the height of the retaining wall blocks 30 to be stacked,
Retaining wall block 3 for connecting and stacking 4 ";4", 4 "
I tried to prevent the tilt of 0. At this time, in this embodiment, in order to connect the vertical steel reinforcing bars 4 ″, 4 ″; 4 ″, 4 ″,
It is excellent that the vertical steel reinforcement rods 4 ″, 4 ″ can be sequentially connected in the height direction to the vertical steel reinforcement rods 4 ″, 4 ″ having the tip end embedded in the base block 32 by using the exterior rotating body 1. It is different from the first and second embodiments in that it has the above effect.

FIG. 6 shows a fourth embodiment of the present invention. That is, in this embodiment, the exterior rotating body 1 is the first
Unlike the embodiment, the second embodiment, and the third embodiment, which are formed in a substantially box shape, a suitable number of, for example, two exterior rotations are formed by bending a metal rod such as a reinforcing bar to form an annular shape. By fitting the body 1 to the nut members 2 and 2'as opposed wall members in the axial direction, the nut members 2 and 2'are separably coupled to each other.

Then, the threaded portions 4 of the steel reinforcing rods 4 and 4'which face each other
a, 4'a; 4b, 4'b are screwed into the screw holes 3, 3'of the nut members 2, 2 ', and then the exterior rotating body 1, 1 is replaced with the nut members 2, 2'clockwise, for example. By rotating integrally, the steel reinforcing rods 4 and 4'are tensioned and connected. Also, when the connection between the steel reinforcing rods 4 and 4'is released, the external rotating bodies 1 and 1 are rotated counterclockwise integrally with the nut members 2 and 2 ', so that the screw holes of the nut members 2 and 2'are screwed. The screw portions 4a, 4'a; 4b, 4'b of the steel reinforcing rods 4, 4'are screwed back from 3, 3 '. Then, the nut materials 2 and 2'are attached to the outer rotating body 1,
The steel rods 4, 4'are disconnected from the nut members 2, 2'by moving in the axial direction in opposition to each other in 1 to separate the nut members 2, 2'from the exterior rotating body 1, 1.

What is shown in FIGS. 7 and 8 is the fifth embodiment of the present invention.
An example will be described. In this embodiment, the nut members ₂ and 2'internally mounted on the external rotating body 1 are attached to the wall surfaces 1a and 1a of the external rotating body 1 facing each other.
_The screw cylinders 2A and 2'A are press-fitted into the inside of the screw cylinder 2A and 2'A. The threaded cylindrical portions 2A and 2'A are substantially frustoconical with a tapered surface 40 having a tapered outer shape, a slit 41 is formed over the entire length of the tapered surface 40 in the axial direction, and the inner circumference is formed. Opposite spiral screw holes 3 and 3'are provided respectively. Although the slit 41 is formed only on one side of the tapered surface 40 in the drawing, it may be formed on both sides.

In order to connect or release the opposing steel reinforcing rods 4, 4'in this way, the external rotating body 1 is rotated clockwise or counterclockwise to rotate the external cylindrical body 2A, 2 '. Inside the screw holes 3 and 3'provided in A, the screw portions 4a provided on the outer circumferences of the end portions of the steel reinforcing rods 4 and 4'that face each other in the front and rear direction,
4'a; 4b, 4'b are screwed in or unscrewed. And this screw cylinder portion 2A, 2'a when the tightening against the tapered surface 40 is de-fitted from the mounting hole 1a _2, 1a ₂ of the outer rotary member 1 is released, the screw portion of the steel muscle rods 4,4 ' The screws 4a, 4'a; 4b, 4'b are unscrewed, and they are forcibly movable in the axial direction. Therefore, the threaded portions 4a, 4'a; 4b, 4'of the steel reinforcing rods 4, 4 '
At the desired position of b, the screw holes 3 of the screw cylinders 2A, 2'A
By moving and aligning 3'by one-touch operation, time-consuming and time-consuming screwing operation of the screw tube portions 2A and 2'A can be largely omitted. After that, the screw cylinders 2A and 2'A having a substantially frustoconical shape are attached to the opposing wall surface portions 1 of the exterior rotating body 1.
The structure, action, and effect different from those of the above-described embodiments are obtained in that they are press-fitted into the mounting holes 1a ₂ and 1a ₂ provided in a and 1a.

FIG. 9 shows a sixth embodiment of the present invention. In this embodiment, unlike the fifth embodiment,
Since the external shapes of the screw cylinders 2A and 2'A are formed in the shape of a quadrangular pyramid, the connecting holes 1a ₂ and 1a ₂ of the external rotating body 1 are connected to the steel reinforcing rods 4 and 4'which are arranged to face each other. The corners of the outer shapes of the screw cylinders 2A and 2'A that are press-fitted are the mounting holes 1a.
_It was locked inside ₂ , 1a ₂ to prevent idling.

Further, as shown in FIG. 10, the screw cylinder portion 2A,
The 2'A outer shape is a hexagonal pyramid trapezoid, as well as an octagonal pyramid trapezoid, etc.
Even in the case of forming a trapezoid, the mounting hole 1 of the exterior rotating body 1
a_Two, 1a _TwoOf the screw cylinders 2A and 2'A when press-fitting into
Idling can be prevented.

In addition, in the first embodiment of the present invention shown in FIGS. 1 to 3 and the fifth embodiment shown in FIGS. 7 and 8, two nut members 2 and 2'and a screw cylinder portion 2A are attached to the outer rotor 1. 2 '
A is installed inside, but any one of these nut materials 2 and 2'and screw cylinders 2A and 2'A is installed inside the exterior rotating body 1 and the wall surface on the other side of this exterior rotating body 1 The portion 1a is provided with screw holes 3 and 3'in the spiral direction which are opposite to the nut materials 2 and 2 ', etc., which are installed in the exterior rotating body 1, so that either one of the steel reinforcing rods 4 and 4'is screwed. It may be one that

In the above description, the gutter block as shown in FIG. 2 and the L-shaped retaining wall block as shown in FIG.
The retaining wall block as shown in Fig. 1 and further the steel reinforcing rods 4 and 4'arranged in concrete products such as box culverts are tightly connected to each other by using the connecting tool of the present invention. In addition to connecting the steel reinforcing rods 4 and 4'to each other, the connecting tool can connect the concrete products by connecting the connecting bars protruding only to the front end or the rear end of the concrete product.

[0035]

As described above, according to the present invention, the individual wall members having any one of the screw holes in the opposite spiral directions are installed in the exterior rotating body, so that they face each other while the rotation is restricted. Depending on the site situation, earthquakes, earth pressures, and automobiles can be driven easily by simply rotating the exterior rotating body after screwing the threaded portion of the steel reinforcement rod into the screw hole of the wall member. It is possible to connect the steel reinforcing rods and the connecting muscles to each other in a structurally robust manner against external force such as vibration of the steel.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing an embodiment of a turnbuckle type connector of the present invention.

FIG. 2 is a perspective view showing a usage state of a turnbuckle type connector as well.

FIG. 3 is an enlarged cross-sectional view showing a state in which steel reinforcing rods are connected to each other using a connecting tool.

FIG. 4 is a perspective view showing a second embodiment of the present invention similarly showing a state in which L-shaped retaining wall blocks are connected.

FIG. 5 is a perspective view showing a third embodiment of the present invention similarly showing a state in which retaining wall blocks are connected.

FIG. 6 is a perspective view showing a fourth embodiment of the turnbuckle type connector of the present invention.

FIG. 7 is a perspective view showing a fifth embodiment of the turnbuckle type connector of the present invention.

FIG. 8 is a cross-sectional view showing a connection state between steel reinforcing bars.

FIG. 9 is a perspective view showing a sixth embodiment of the present invention in which the screw cylinder portion is also formed into a truncated pyramid shape.

FIG. 10 is a perspective view showing a seventh embodiment of the present invention in which the screw cylinder portion is also formed into a hexagonal truncated pyramid shape.

FIG. 11 is a perspective view showing an example of a connector for a conventional concrete product.

FIG. 12 is a perspective view showing another example of the conventional connector for connecting concrete products.

13 is an enlarged perspective view of the connector shown in FIG.

[Explanation of symbols]

 1 Exterior Rotating Body 1a Wall Surface Part 2 Nut Material 2'Nut Material 3 Screw Hole 3'Screw Hole 4 Steel Reinforcing Bar 4'Steel Reinforcing Bar 4a Screw Part 4'a Screw Part 4b Screw Part 4'b Screw Part 5 Side Groove Block 6 Notch Recess 20 L-shaped retaining wall block 30 Retaining wall block

Claims (8)

[Claims] 1. An exterior rotating body provided with facing wall members having at least one of screw holes in opposite spiral directions in the axial direction, and a screw part screwed into the screw hole and provided with each other. A turnbuckle comprising steel reinforcing bars arranged to face each other in a state where rotation is restricted, and the steel reinforcing bars are tightly connected to each other at a screw insertion portion by rotating the exterior rotating body. Style fittings. 2. The exterior rotating body has a substantially box-shaped outer shape, and at least one of the wall surface members is a nut material, and the nut material is movable in the axial direction in the exterior rotating body. The turnbuckle type connector according to claim 1, wherein the turnbuckle type connector is provided so as to be locked in a direction intersecting with the axial direction. 3. The insertion hole into which any of the steel reinforcing rods can be inserted is provided in at least one of the wall surfaces of the exterior rotating body that face each other in the axial direction. Alternatively, the turnbuckle-type connecting device according to claim 2. 4. At least one of the facing wall members is a nut member, and a plurality of ring-shaped exterior rotating bodies are fitted between the wall members including the nut member in the axial direction, and the wall member is fitted. The turnbuckle type connector according to claim 1, wherein the members are connected to each other. 5. The opposing wall members are nut members, and the nut members can be separated from each other by fitting the nut members to a suitable number of annular outer rotors in the axial direction. The turnbuckle type connector according to claim 1 or 4, characterized in that 6. The nut member is a screw cylinder portion that is press-fitted into the opposing wall surface portion of the exterior rotating body so as to be capable of being fitted and removed, and the screw cylinder portion has a tapered surface with a tapered outer shape, A slit is formed over the entire length in the axial direction of the tapered surface, and a screw hole in any one of spiral directions opposite to each other is provided in the inner periphery and at least one of the steel reinforcing rods is provided in the screw hole. The turnbuckle type connector according to any one of claims 2 or 4, wherein the threaded portion is screwed. 7. The screw rod portion is provided so as to be forcibly movable in the axial direction with respect to the screw portion of the steel reinforcing bar when the screw cylinder portion is dismounted from the exterior rotating body and the tightening on the tapered surface is released. The turnbuckle type connector according to claim 1, wherein the connector is a turnbuckle type connector. 8. The screw cylinder portion having the tapered surface is formed to have an outer shape of a substantially truncated cone, a truncated pyramid, a truncated hexagon, or a truncated octagon. The turnbuckle type connector described in.