JP2811537B2 - Concrete block connection bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for connecting concrete blocks formed in a flat plate or L-shape, or a concrete block and a concrete block which forms a foundation, by using ready-mixed concrete or mortar. And a connection fitting for connecting the connection fittings at predetermined intervals.

[0002]

2. Description of the Related Art Conventionally, the configuration is as shown in FIG.
In FIG. 3, reference numerals 1 and 2 denote concrete blocks arranged at predetermined intervals, and connecting bars 3 and 4 made of a reinforcing steel material are buried in the facing portions so as to protrude in the facing direction. Each of the connecting rods 3 and 4 has a hook portion
a and 4a are formed, and the hooks 3a and 4a are engaged with each other. And the opposing concrete block 1,
The mold plates 5 and 6 are applied to both sides of the gap (a), and ready-mixed concrete or mortar is poured into the gap (a) to integrally connect the two.

[0003]

In the prior art described above, the connecting rods 3 and 4 are integrally fixed to the concrete blocks 1 and 2 and the hooks 3a and 4a thereof are engaged with each other. The gap between the opposing concrete blocks 1 and 2 cannot be adjusted, and the connecting rods 3 and 4 cannot be adjusted.
However, there is a problem that the burial amount or the bending accuracy of the hook portions 3a and 4a are easily deviated, and the gap between the concrete blocks 1 and 2 becomes uneven, so that high-precision arrangement becomes difficult. SUMMARY OF THE INVENTION An object of the present invention is to provide a novel connection fitting for a concrete block which has solved the above-mentioned disadvantages.

[0004]

Means for Solving the Problems The present invention has the following configuration to achieve the above object. That is, L
A pair of L-shaped brackets having one side and the other side bent into a mold are provided, and the one side has an engagement projection with a small end portion, and an opening at the center of the one side. A through hole through which a threaded bar embedded in the opposite portion of the concrete block is loosely fitted; and an engaging hole in which the engaging protrusion is engageable is formed at the tip of the other side. Are engaged with the engagement holes of the other L-shaped bracket, and the engagement holes of one L-shaped bracket are engaged with the engagement projections of the other L-shaped bracket to form a frame. In this case, the gap between the opposite sides of each L-shaped bracket is configured to be a gap for preventing idling of the nut screwed into the screw rod. In this case, it is preferable that the engagement protrusion provided on the one side is inclined such that its tip end is directed outward.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan sectional view showing a first embodiment of the present invention, and FIG. 2 is a perspective view of an L-shaped bracket. In FIG. 1, reference numerals 10 and 11 denote concrete blocks arranged at predetermined intervals, and threaded rods 12 and 13 are arranged and buried in opposing portions at a predetermined pitch in the longitudinal direction, and a part of the blocks is arranged in the opposing direction. Protrude. The threaded rods 12 and 13 use metal bolts composed of right-handed screws and left-handed screws, and their heads 12a and 13a sides are concrete blocks 10 and 1 respectively.
1 and the screw portions 12b and 13b are protruded in opposite directions.

The leading ends of the threaded rods 12 and 13 are inserted into the left and right sides of the frame-shaped connection fitting 15 so that the threaded parts 12b and 1 are inserted.
3b are screwed with nuts 20, 20, and the nut 2
0, 20 are locked to the inner surfaces of the left and right sides. Then, the gap S between the opposing concrete blocks 10 and 11 is adjusted by adjusting the screwing amount of the nuts 20 and 20.

[0007] The connecting fitting 15 is a pair of L-shaped fittings 1.
6 and 16 are formed by engaging each other. The L-shaped bracket 1
6 and 16 have the same shape, one of which will be described with reference to FIG. That is, a main body obtained by cutting a steel sheet into a rectangular shape is bent into an L-shape of an unequal side, an engagement projection 17 and a through hole 18 are formed on one side 16a on the short side, and the other side 16b on the long side is formed on the other side 16b An engagement hole 19 is formed.

The engaging projection 17 is formed by making an upper portion (a tip portion) of one side 16a narrow, and bending an upper end (a tip portion) outward. The through hole 18 is formed so as to penetrate the center of one side 16a, and has a diameter that allows the screw portions 12b and 13b of the screw rods 12 and 13 to fit loosely. The engaging hole 19 is formed in a rectangular shape elongated in the left-right (longitudinal) direction at the right end (tip) of the other side 16 b, and has a width in the front-rear (short) direction of the engaging protrusion 17. Make it slightly larger than the width.

Then, the engagement projection 1 of one L-shaped bracket 16 is formed.
7 is engaged with the engagement hole 19 of the other L-shaped bracket 16, and the engagement hole 19 of the one L-shaped bracket 16 is
1 to form a frame-shaped connection fitting 15, and as shown in FIG. 1, the through holes 18, 18 are inserted into the threaded portions 12 b, 13 b of the threaded rods 12, 13. The nuts 20, 20 are screwed into the ends of the threaded portions 12 b, 13 b from inside the connection fitting 15. In this case, the width W1 in the short direction of the connection fitting 15 is set to a width (gap) for preventing the nuts 20 and 20 from idling, and the nuts 20 and 20 can be rotated via the connection fitting 15. The L-shaped bracket 1
Assembling of six and sixteen may be performed after each of the through holes 18 and 18 is inserted into each of the screw parts 12b and 13b.

In FIG. 1, reference numerals 23, 23 denote stencils applied to both sides of a gap (a) of the opposing concrete blocks 10, 11, and fresh concrete or mortar is poured into the gap (a) to mix the two. Connect them together.
When placing a plate-shaped concrete block on the upper surface of the concrete block forming the foundation, the plate is placed with intervening members such as a metal pipe and a concrete small block, and the screw rods 12 and 13 are placed. Is tightened by the connection fitting 15. Then, a plate-like concrete block can be erected on the upper surface of the concrete block forming the foundation with a predetermined gap S therebetween, and the work is safe.

[0011]

As described above, according to the present invention, the gap between the opposing concrete blocks can be easily adjusted, and the arrangement of the concrete blocks can be easily and accurately performed. Further, since the connecting fitting is assembled by engaging a pair of separately formed L-shaped fittings with each other, the work of engaging with the threaded rod in a narrow place becomes easy. Moreover,
Since the connection metal fitting when assembled in a frame shape is engaged with the nut screwed into the screw rod, two nuts facing each other can be rotated by rotating the connection metal fitting. In addition, since the tip of the engaging projection of the L-shaped bracket is inclined outward, the inclined portion acts in a direction of bringing the pair of L-shaped brackets closer to each other when a load is applied, and is assembled in a frame shape. The connected metal fitting is prevented from being inadvertently disassembled by the load when rotating the nut.
And so on.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of an L-shaped bracket according to the present invention.

FIG. 3 is a partially sectional perspective view showing a conventional example.

DESCRIPTION OF SYMBOLS 10 Concrete block 11 Concrete block 12 Screw rod 12a Head 12b Screw part 13 Screw rod 13a Head 13b Screw part 15 Connection fitting 16 L-shaped fitting 16a One side 16b The other side 17 Engagement projection 18 Through Hole 19 Engagement hole 20 Nut 23 Template

Continuation of the front page (56) References JP-A-3-267421 (JP, A) JP-A-63-100544 (JP, U) JP-A-4-69504 (JP, U) JP-B-47-20710 (JP, U.S.A.) , B1) (58) Field surveyed (Int. Cl. ⁶ , DB name) E04B 1/61 E02D 29/02 301

Claims (2)

(57) [Claims] 1. A pair of L-shaped fittings (16) having one side (16a) and the other side (16b) bent into an L-shape are provided, and the tip of the one side (16a) has a small width. West
A pair of the engagement protrusion (17) and the concrete block (10, 11) opened at the center of the one side (16a) .
And a through hole which the threaded rods embedded in direction portion (12, 13) is loosely fitted (18) is formed, engaging the engaging projection (17) engageable in the front end portion of the other side (16b) A mating hole (19) is formed, and the engaging projection (17) of one L-shaped fitting (16) is engaged with the engaging hole (19) of the other L-shaped fitting (16).
When the engagement holes (19) of one of the L-shaped brackets (16) are engaged with the engagement projections (17) of the other L-shaped bracket (16) and assembled into a frame shape, A gap (W1) between the other opposite side (16b, 16b) of (16) is a gap for preventing idling of the nut (20 ) screwed into the screw rod (12, 13). Connection block for concrete blocks. 2. A concrete block connecting metal fitting according to claim 1, wherein said engaging projection (17) provided on said one side (16a) has its tip end inclined toward the outside.