JP2732360B2 - Connection metal fittings for concrete block reinforcement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting bracket used for connecting reinforcing bars embedded in a block to anchor bars in stacking concrete blocks to form a block wall or the like.

[0002]

2. Description of the Related Art Conventionally, this kind of reinforcing bar is connected to an anchor bar by welding. As another simplified connection means, a wire was wound around the upper and lower two places of the two stitches a plurality of times and the terminal was twisted and stopped.

[0003]

Therefore, this type of conventional connection means requires a series of large and heavy welding equipment which is inconvenient to carry in the case of connection by welding, and requires a large amount of welding equipment. Since a technician was required, there was a problem that it was difficult to implement it easily due to cost. In addition, in the case of the schematic connection of wire winding, since the wire must be wound around the upper and lower two or more times with the reinforcing bar connected to the anchor bar and connected, a considerable amount of time and labor is required. In particular, in the case of fine wires, they tend to deteriorate over time, and after a long period of time, they corrode and lose their tightening force, and there is a danger that an unexpected situation such as collapse of the block may be caused.

[0004] In order to solve the problems of the conventional means, the present invention has a low risk of aging and can reliably and easily connect rebars. Another object of the present invention is to provide a connection fitting capable of improving workability.

[0005]

The structure of the present invention for achieving the above object will be described with reference to the reference numerals used in the embodiments. Is formed so that the shape in a side view becomes a U-shape, and long holes 5 and 6 are formed in the upper half 3 and the lower half 4 in the vertical direction, respectively. The long slot 6 is formed so as to have a length of at least two reinforcement cross sections, and the lower slot 6 has a cutout 8 formed on one side. The formation position of the elongated hole 5 is determined by the distance d between the formation position of the lower elongated hole 6 and the bent portion 2.
It is configured to be formed at a position where the distance D from the bent portion 2 is farther away.

In this embodiment, the upper elongated hole 5 is formed with small projections 7, 7 at the upper and lower ends of the elongated hole, or both ends of the elongated hole 5 are slightly smaller than the reinforcing bar cross section. It can be carried out by sandwiching between the surfaces, or by bending the side edge portions of the upper half and the lower half toward the inside or outside to reinforce. Further, as the steel plate to be used as the material, a steel plate, a stainless steel plate and other materials having a high spring property are suitable.

[0007]

According to the present invention having such a structure, the notch 8 is formed on the side of the lower elongated hole 6 in use, so that the upper elongated hole 5 is formed with respect to the anchor muscle. Is inserted from the upper side into the elongated hole 5 with a reinforcing bar connected thereto in a state of being fitted from above.
Is applied to both muscles A and B from the side, and the outside thereof is hit with a hammer or the like to fit both muscles A and B into the lower elongated hole 6. In this way, the two muscles A and B can be easily and reliably connected, so that work efficiency can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a first embodiment of the present invention, wherein FIG. 1 shows an overall shape, FIG. 2 shows a developed shape, FIG. 3 shows a central sectional shape thereof, FIG. 4 is a diagram showing a use state.

The metal fitting body 1 of this embodiment is obtained by cutting an elongated stainless steel plate or cutting the stainless steel plate into an upper half portion 3 and a lower half portion starting from a substantially middle portion in the vertical direction. 4 and long holes 5 and 6 are formed in the vertical direction, respectively,
The length of the lower elongated hole 6 is formed so as to have a length equal to or more than two reinforcement cross sections, and the length of the upper elongated hole 5 is equal to the length of the lower elongated hole 6.
Formed in a long hole longer in the vertical direction than the length of
The upper slot 5 is formed at a position where the distance D from the intermediate portion is greater than the distance d between the lower slot 6 formation position and the intermediate portion. , Which are bent so that the shape in a side view becomes a U-shape. Further, the upper long hole 5 of the metal fitting body 1 in this embodiment has small projections 7, 7 formed on both upper and lower ends of the long hole, and the lower long hole 6 has a notch formed on one side of the long hole. 8 is formed. In addition, 9 in the figure is a protruding piece that is bent from the upper and lower sides of the lower elongated hole 6 in the opposite directions to prevent catching.

Next, a specific example of an embodiment of the fitting main body 1 according to the embodiment will be described as follows. For the steel bars whose connection is to be made with a quarter circle (diameter of about 10 mm), material = stainless steel plate, plate thickness = 2.0 mm,
Length = 136mm, width = 20mm, distance from upper end to bending origin (middle point) = 68mm, length of upper slot 5 = 24
mm, width = 11 mm, protrusion amount of the small protrusion 7 = 0.3 to 0.5 m
m, distance D from the midpoint to the lower side of the upper slot 5 D = 38m
m, length of lower slot 6 = 22 mm, width = 10.5 mm, length of cut 8 connected to slot 6 = 20.5 mm, distance d from midpoint to upper side of lower slot 6 = The test was carried out at 30 mm, and the inside angle of the U-shape was 80 °.

In order to connect the two rebars A and B to be connected using this, the connecting bar B is connected to the anchor bar A whose one end is embedded in the concrete C as shown in FIG. To do this, the upper elongated hole 5 is fitted into the anchor bar A from above, and the connecting bar B is attached to the anchor bar A and inserted into the elongated bar 5. B, and hitting the outside thereof with a driving tool such as a hammer to fit the two streaks A and B into the lower elongated hole 6.

In this manner, as shown in FIG. 4, the metal fitting body 1 has a steeply inclined upper half 3 and a lower half 4 from the middle bent portion 2 with respect to the two streaks A and B. It becomes a state of gentle inclination, and both muscles A and B are held in close contact with the upper and lower slots 5 and 6. In this state, when a force in the pull-out direction, that is, an upward pulling force is applied to the connecting streaks B, the connecting streaks B are caught by the elongated hole 5 at the upper steep slope, and the upper half 3
Is changed to a force that tries to make the two muscles A and B more tightly coupled with each other so as to become steeper, and the connecting muscle B
Block the upward movement of Therefore, it is possible to reliably prevent the concrete blocks piled up around this from falling down. In this case, the small projections 7, 7 are formed above and below the upper elongated hole 5, as in the embodiment, whereby the penetration into both muscles A, B can be further ensured. . In addition, the projections 9 for preventing catching from the upper and lower sides of the lower elongated hole 6 are formed so as to protrude, so that the upper half 3 can be moved upward when the upper half 3 is moved upward.
Can be reliably prevented from moving upward simultaneously.

Next, a 5-minute circle (about 13 m in diameter) shown in FIG.
m) A numerical example of the metal body 1 for a reinforcing bar will be described. Material = Stainless steel plate, thickness = 3.0mm, length = 150m
m, width = 26 mm, distance from upper end to bending origin (middle point) = 81 mm, length of upper slot 5 = 30 mm, width = 14 m
m, distance D from the middle point to the lower side of the upper slot 5 D = 42 m
m, length of lower slot 6 = 28 mm, width = 13.5 mm, length of cut 8 connected to lower slot 6 = 27 mm, distance d from midpoint to upper side of lower slot 6 = 30 mm , And the inside angle in a side view of a U-shape was set to 80 °. The upper slot 5 of this embodiment is a slot without the small projections 7, 7 shown in the first embodiment, and the width of both upper and lower ends of the slot 5 is set to the width of the reinforcing bars A, B. It is formed to a width smaller than the diameter,
The reinforcing bars A and B are sandwiched from diagonally lateral sides by the narrow side surfaces. Of course, the reinforcing bars A and B may be held at these three points on both sides and the bottom of the elongated hole. Note that, in this embodiment, a structure is shown in which there are no protrusions 9 for preventing catching, which are bent and protruded in opposite directions from the upper and lower sides of the lower elongated hole 6 shown in the first embodiment. is there.

In the embodiment shown in FIG. 6, the side edges 3a, 4a of the upper half 3 and the lower half 4 are directed inward except for the bent portion 2 along the longitudinal direction of the metal fitting body 1. It is formed by bending. By doing so, the strength of the upper half 3 and the lower half 4 can be improved, and even thin materials can be used. The bending direction of the bent side edge portions 3a and 4a is not limited to the inside, and the same reinforcing effect can be obtained even when bent toward the outside.

Although the embodiments which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments.
It is possible to add appropriate changes such as turning back the side of B to reinforce the material, or cutting both sides of the bent portion 2 to make the width narrower so that a spring effect can be easily obtained. The present invention has the above-mentioned components, achieves the object of the present invention, and can be appropriately modified and implemented within a range having the following effects.

[0016]

As is clear from the above description, the present invention uses an elongated material made of a steel sheet and folds it so that the shape in a side view becomes a V-shape from a substantially middle portion in the longitudinal direction. Bending, forming long holes vertically in the upper half and lower half, respectively, so that the length of the upper hole and the lower hole is longer than the length of the reinforcing bar cross section by two or more. And the lower slot has a cut 8 formed on one side,
In addition, since the formation position of the upper slot is formed at a position where the distance from the bent portion is farther than the distance between the lower slot formation position and the bent portion, The upper half is steeply inclined by inserting an anchor bar and a reinforcing bar connected to the anchor bar into these upper slots, and hitting the lower cut to insert both bars into the lower slot. ,
The lower half is gently inclined, so that there is an effect that the two streaks can be easily and securely brought into close contact with the upper and lower slots.

Once the connection state is established, when a force in the pull-out direction, that is, an upward pulling force is applied to the connection streak, the connection streak is hooked on the steeply inclined upper elongated hole, and the upper half portion is further further reduced. It changes to a force that connects the two muscles more tightly in an attempt to steeply slope, and reliably prevents the upward movement of the connecting muscle. Therefore, it is possible to expect a remarkable effect that the concrete blocks piled up around this can be surely prevented from collapsing. In addition, there is no danger of deterioration due to aging, corrosion and loss of tightening force as in the case of fine wires.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a first embodiment of the present invention.

FIG. 2 is a developed plan view showing the overall shape.

FIG. 3 is a central vertical sectional view of FIG. 2;

FIG. 4 is a side view showing a use state.

FIG. 5 is a developed plan view showing a second embodiment.

FIG. 6 is an overall perspective view showing a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bracket main body 2 Middle bent part 3 Upper half part 4 Lower half part 5 Upper long hole 6 Lower long hole 7 Small protrusion 8 Notch

Claims (1)

(57) [Claims] 1. A metal fitting for connecting reinforcing bars embedded inside a concrete block when laminating a concrete block, wherein an elongated metal fitting body 1 made of a steel plate is shaped like a side view from a substantially middle portion in its length direction as a base point. The upper half 3 and the lower half 4 are formed with vertically long slots 5 and 6, respectively, and the lower slot 6 is formed to have a length of at least two reinforcement cross sections. The lower slot 6 has a cut 8 on one side, and the position of the upper slot 5 is smaller than the distance d from the bent section 2 to the lower slot 6. A connection metal fitting for a concrete block reinforcing bar formed at a position at a distance D from the outside.