JPH07247633A - Support spacer for concrete-reinforcing metallic wire - Google Patents

Abstract

PURPOSE:To provide a concrete-reinforcing metallic wire for use as a welding mesh or the like, having a spacer for aligning protective concrete covers. CONSTITUTION:Two legs 14a, 14b, made of metallic wires each of which is curved and extended from a mount 13 on which a reinforcing metallic wire 12 to be embedded in concrete 11 is placed to a leg part 14, are connected together by two connecting members 16a, 16b mounted on respective mounts 13a, 13b and welded together, so as to form a spacer 18. Swelling parts 17a, 17b that swell over the mounts 13a, 13b are projected from the respective two connecting members 16a, 16b, and the gap (p) between the portions of the two connecting members 16a, 16b welded to the mounts 13a, 13b on frontal view with the sight line from one leg member 15a to the other 15b, is made broader than the gap (q) between the apexes of the two swelling parts 17a, 17b. The spacer 18 is used while the gap (q) between the swelling parts 17a, 17b is fitted over the concrete-reinforcing metallic wire 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic slab 30 and other concrete pouring floors, concrete building panels, welded wire nets (wire mesh) 3 embedded in concrete 11 to be reinforced to reinforce concrete pouring foundations and the like.
1, vertical bars 12a and 12b, horizontal bars 12c and 12d, reinforcing bars,
A slender metal material (hereinafter referred to as a reinforcing metal wire material) 12 such as a reinforcing bar is inserted between the cracked stone-clad soil, abandoned concrete soil, a concrete form material, a deck plate, and the like (hereinafter, referred to as a base). The present invention relates to a concrete reinforced metal wire rod support spacer which is supported at a constant distance from 32 and is used to secure the covering of the concrete 11 to be driven.

[0002]

2. Description of the Related Art Conventionally, a deck putt 3 of a synthetic slab 30
Spacer 33 for laying welded wire mesh 31 on top of 2
Is a long metal material (hereinafter, referred to as a metal wire material) such as a wire, a reinforcing bar, and an iron rod, which is bent into an Ω shape, and a length m between the tips of the left and right protrusions 34a and 34b protruding from the lower side. To the width n of the mountain portion 35 of the deck plate, and bending the tips of the left and right protrusions 34a and 34b downward to fit into the mountain portion 35 of the deck plate. It is known that the members 37a and 37b are formed by welding a connecting member 38 made of a straight metal linear material to the tops 39a and 39b bent and protruding in the Ω shape.

In this conventional spacer 33, the mountain portion 3 is provided between the bent tip portions of the left and right protruding portions 34a and 34b.
5 is placed on the deck plate 32 by fitting it, and a welded wire net 31 is laid on the deck plate 32 for use. The welded wire net 31 has vertical or horizontal streaks (hereinafter, these are referred to as streaks).
However, since it is received by the connecting member 38 that is bridged between the two leg members 37a and 37b, it is possible to secure a concrete cover for the height of the top 39 that is bent and protrudes in the Ω shape. Become.

[0004]

By the way, there are various types of deck plates 32 having various standards in which the width n of the peak portion 35 is different. Therefore, as the spacer 33, several kinds of spacers having different lengths m between the tips of the left and right protrusions 34a and 34b of the leg members 37 should be prepared according to the width n of the mountain portion 35 of the deck plate. It will not happen. Of course, the leg members 37 can be simply placed on the ridges 35 and used without fitting the tips of the left and right protrusions 34a and 34b into the ridges 35 of the deck plate. However, in that case, when concrete is placed at a construction site, the worker may step on the laid welded wire net 31, and in such a case, the spacer 33 receives the vibration from the welded wire net 31. Sometimes comes off the mountain part 35,
It is easy for the inconvenience that the spacer 33 hits the end of the welding wire net 31 that moves during the work of laying the welding wire net and comes off from the mountain portion 35. However, in such a case, the welding wire mesh 3
It is good to bind the spacer 33 to 1.
Carrying the binding wire, welding wire mesh 31 and spacer 3
Bundling 3 is annoying.

When the deck plate is inclined, as in the case of placing concrete 11 on the slope,
The conventional spacer 33 cannot be used because it naturally shifts and comes off the mountain portion of the deck plate.

Further, in the welded wire net 31 to be laid, two or more of the braces 12a, 12b or 12c, 12d are received by the connecting member 38, and the braces 1 in the vertical and horizontal directions are provided.
Since it is necessary to prevent the spacer 33 from protruding from the opening 40 of the welded wire mesh surrounded by 2a, 12b, 12c, and 12d, the length k of the connecting member 38 is determined by the length of the adjacent braces 1
The distance h between 2a · 12b or 12c · 12d must be twice or more.
Even if the spacer 33 is forgotten to be placed on the deck plate 32, the spacer 33 is inserted through the opening 40 of the laid welding wire mesh.
Cannot be inserted between the welding wire net 31 and the deck plate 32. Therefore, in such a case, the laid welding wire net 31 is removed and the spacer 33 is replaced with the spacer 33.
Inconvenience such as having to re-install it in 2 is inevitable.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a welded wire mesh 31 is installed before installation.
Can be pre-installed on the deck plate 3 and therefore, as when placing concrete 11 on a slope.
Provide a concrete reinforced metal wire support spacer that can be used even when 2 is inclined, and can be attached by inserting it from the opening 40 of the welding wire net even if it is discovered that it has been forgotten to attach after laying the welding wire net It is what

[0008]

That is, a concrete reinforced metal wire rod supporting spacer 18 according to the present invention is a metal that is bent from a mounting portion 13 on which a reinforced metal wire rod 12 buried in concrete 11 is placed to be bent to a leg portion 14. The two leg members 14a and 14b made of a linear material are mounted on the mounting portions 13 of them.
It is connected to two connecting members 16a and 16b made of a metal linear material which is placed on and welded to a and 13b, and these two connecting members 16a and 16b are respectively leg members 15a and 15b.
The protruding portion 1 that protrudes upward from the mounting portions 13a and 13b of b.
7a and 17b, and each of the mounting portions 13a and 1 viewed from the front with the line of sight from one leg 15a to the other leg 15b.
Two connecting members 16a and 16b at a welding position with 3b
And the ridges 17a and 17 of the two connecting members.
It is characterized in that a gap is formed between the top end portions of b. Each mounting portion 13a.1 viewed from the front
Two connecting members 16a and 16b at a welding position with 3b
The gap p between them is the ridges 17a and 17b of the two connecting members.
It is preferable to make it wider than the gap q between the top end portions of the.

[0009]

The present invention will be described below with reference to the illustrated embodiments. The ridges 17a and 17b are two connecting members 16a and 1
6b, one end or both ends facing each other, or one end of the two connecting members 16a and 16b not facing each other (for example, a front end of the connecting member 16a and a rear end of the connecting member 16b) is bent upward, or two connecting members are connected. 16a, 16b facing each other or one end, or two connecting members 16a, 16
It is also possible to project each one end of b that does not face each other to the outside of the mounting portion 13 of the leg member and bend the projecting portions 20a and 20b upward (FIG. 7), or alternatively, to form the two connecting members 16a and 16b each of two legs 15a and one leg 1
It can be formed by bending the space between 5b to the upper side (FIG. 10), but preferably two connecting members 16a and 16b.
It is preferable to form the intermediate portions between the two leg members 15a and 15b by facing each other upward and protruding (FIGS. 1 to 6 and 13 to 14).

When the ridges 17a and 17b are thus formed by bending the ends 20a and 20b protruding from the mounting portion 13 of the two connecting members 16a and 16b to the upper side, two legs 15a and Align the two connecting members 16a and 16b between the legs 15b in a straight line (FIG. 7),
Two connecting members 15 of each of the two connecting members 16a and 16b
In the case where the intermediate portion between the a and the leg member 15b is formed by bulging the two members so as to face each other upward, the two connecting members 1
Two connecting members 16a, 16 which are aligned straight in parallel (FIGS. 1 to 6, FIGS. 13 to 14) with the portions continuing from the raised portions 17a, 17b of 6a, 16b.
Groove 1 to be fitted with the reinforcing metal wire 12 between the straight portions of b
9 may be formed.

2 of each of the two connecting members 16a and 16b
When the ridges 17a and 17b are formed by bending the space between the two pedestals 15a and 15b to the upper side, the two leg members 15a and 15b of the top end portions 21a and 21b of the ridges 17a and 17b are formed. Positions in between may be staggered (FIGS. 11-12), but are preferably their apex portion 21.
It is advisable to align the positions of the a.21b between the two leg members 15a and 15b, and to make the top end portions 21a and 21b of the raised portions 17a and 17b face each other, in which case the reinforcing metal wire 12 is raised to the left and right. Part 17a ・ 17
It becomes easy to hit between b (Figs. 1 to 6 and 13 to 1).
4).

The two connecting members 16a and 16b can be bent downward to form a recess between the two leg members 15a and 15b. In that case, the two connecting members 16a are formed.
・ Protruding the end of 16b to the outside of the leg mounting portion 13,
The protrusions 20a and 20b are bent upward to form the ridges 17a and 17b (FIG. 9).

The number of legs 14 continuing from the mounting portion 13 may be one. In that case, in order to stabilize the legs 15, the legs 1
It is advisable to bend the tip 12 of 4 to the mounting portion side (13) to form the leg 15 in a U-shape or a U-shape (FIG. 8). However, in order to stabilize the concrete-reinforced metal wire supporting spacer 18 on the base 32 such as a deck plate,
Alternatively, when walking on the laid welded wire mesh 31 (12), or the reinforced material of the welded wire mesh 12a, 12b, 12c, etc.
When the 12d (12) is tapped into the raised portions 17a and 17b, in order to prevent the leg portion 14 from bending, both ends of the mounting portion 13 are bent and the leg material 15 has two leg portions 14a. 14b, so that the concrete reinforced metal wire support spacer 18 is supported by a total of four legs 14 (FIGS. 1-7, 9-).
14). The height f of the leg member 15 from the leg portion 14 to the mounting portion 17 is 20 mm, 30 mm, 40 mm, ...
It is appropriately set such as 00 mm.

The lower ends of the legs 14 may project vertically (FIG. 7), but especially for spacers 18 used on uneven bases 32, such as split stone cobblestones, the leg 14 It is preferable that the lower end is bent to project in the horizontal direction, and the load applied from the welding wire net 31 or the like is dispersed in the projected horizontal portion 41 (FIGS. 1 to 6 and FIGS. 8 to 14).

[0015]

[Function] The reinforcing metal wire 12 is provided with two raised portions 17a, 17a.
Place it between b and hit it, or use two bumps 17a.1
When the space between 7b is placed on the reinforcing metal wire 12 and is struck, the reinforcing metal wire 12 is fitted between the two connecting members 16a and 16b, in which case the ridge 17 is elastically deformed to some extent. Since the elastic recovery force of the reinforcing metal wire 12 is formed by closing the gap 23 between the raised portions after the impact,
Is to be closed between the two connecting members 16a and 16b, and the spacer 18 is hard to come off from the reinforcing metal wire 12, so that the reinforcing metal wire 12 is laid on the base 32 while the spacer 18 is attached, It is possible to secure a concrete cover according to the height f of the leg material 15 from the leg portion 14 to the mounting portion 17.

In particular, ridges 17a and 17b are formed facing each other at an intermediate portion between the two leg members 15a and 15b of each of the two connecting members 16a and 16b, and the two connecting members 16a and 16b are formed. In the case where the portions continuing from the raised portions 17a and 17b are aligned straight in parallel and the groove 19 is formed between the straight portions aligned in parallel (FIGS. 1 to 8 and 13 to 14), the two Ridge 17
The reinforcing metal wire 12 is easily struck between a and 17b, and the struck reinforcing metal wire 12 is connected to the left and right connecting members 16a.
・ Reinforcing metal wire rod 1 because it is sandwiched in close contact with 16b
During the laying work of No. 2, it is difficult for the spacer 18 to come off or the mounting position to shift.

Since the concrete reinforcing metal wire supporting spacer 18 is attached to one reinforcing metal wire as described above, the length j of the connecting member 16 should be short so that it can be inserted from the opening 40 of the welding wire net 31. If it is found that the spacer 18 has been forgotten to be attached to the laid base 32, it can be inserted between the welding wire net 31 and the base 32 through the opening 40 and attached to the bracing member 12 (FIG. 6). The base 32 can be used even when the base 32 is inclined or vertical.

The concrete reinforced metal wire rod support spacer 18 according to the present invention is not used by mounting the reinforced metal wire rod 12 on the connecting member 16, but by being used by being attached to the reinforced metal wire rod 12. Therefore,
Two spacers 18a are provided on one reinforcing metal wire 12e.
18b can be attached (FIG. 13), and the reinforcing metal wire 12e whose front and rear ends are supported by the attached two spacers 18a and 18b is the same as the conventional concrete reinforcing metal wire supporting spacer 33. It is also possible to lay the welding wire net 31 on the reinforcing metal wire 12e by placing the reinforcing members 12a, 12b, 12c, 12d on the reinforcing metal wire 12e, and if it is discovered that the spacer 18 has been forgotten to be attached after the installation, Reinforcing metal wire rod 12
One spacer 18 is attached to e, and two reinforcement members (12a and 12b or 12c) of welded wire mesh are provided at the front and rear ends of the reinforcing metal wire 12e protruding in the front and rear of the spacer 18.
And 12d) can be supported (Fig. 1
4).

Various concrete reinforcing metal wire rod support spacers 18 are prepared by changing the size of the gap p between the two connecting members 16a and 16b according to the thickness of the reinforcing metal wire rod 12 to be attached. However, as mentioned above,
When the reinforcing metal wire 12e having the spacer 18 attached thereto is used as a substitute for the conventional concrete reinforcing metal wire supporting spacer 33, the reinforcing wire 12a.
It is not necessary to prepare various standards according to the thickness of 2b, 12c, and 12d (FIGS. 13 to 14).

[0020]

Since the concrete reinforced metal wire rod support spacer 18 according to the present invention is attached to the reinforced metal wire rod 12, the reinforced metal wire rod 12 can be used during concrete placing work.
It is also possible to place the welding wire net 31 previously laid on it and to lay the next welding wire net 31 without coming off from the above, which facilitates the work of laying the welding wire net 31 and, like the conventional spacer 33, the position of the installation. Reinforcing metal wire 12 while visually checking
The labor of laying (31) can be saved, and it can also be used on an inclined base 32.

Even when walking on the reinforced metal wire rod 12 laid, the load applied to the spacer 18 at that time is not caused by the flexible connecting members 16a and 16b supported like the support beams at both ends but by the base. Since the short mounting portion 13 following the leg portion 14 rising from 32 is covered, the spacer 18 of the present invention is less likely to be deformed than the conventional product (33).

Further, the concrete reinforced metal wire rod support spacer 18 according to the present invention is made of a metal material (15, 16) like the reinforced metal wire rod 12 embedded in the concrete 11, so that the concrete is poured. It is well-suited to 11 and unlike the spacer made of plastic, cracks due to adhesiveness with the spacer 18 do not occur in the concrete 11.

Further, the reinforcing metal wire rod 12 to which the concrete reinforcing metal wire rod supporting spacer 18 according to the present invention is attached.
Is a part of which is bent to form the legs, but the spacer 18 is attached at a construction site where it is placed on the concrete 11. Therefore, a part of the spacer is bent to form the legs (14). Like a reinforced metal wire
The legs are protruding from the reinforced metal wire, and the legs 14 protruding during the process of being bulky for storage or being carried into a construction site do not interfere.

Furthermore, the concrete reinforced metal wire rod support spacer 18 according to the present invention is not manufactured by bending one metal wire material in a complicated manner by changing the direction, but by using two front and rear leg members 15a. The left and right connecting members 16a and 16b are welded to 15b, and these four members (15a, 15b, 16a, and 16b) have a central portion of the metal linear material in an Ω shape, a U shape, and a U shape. It is processed by only one simple bending work to make a U-shaped, bow-shaped or chevron-shaped depression, and the processing man-hour is small, and it can be manufactured efficiently and economically.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a synthetic slab using a spacer according to the present invention.

FIG. 2 is a perspective view of a spacer according to the present invention.

FIG. 3 is a plan view of the illustrated spacer of FIG.

FIG. 4 is a front view of the illustrated spacer of FIG.

5 is a side view of the illustrated spacer of FIG.

FIG. 6 is a perspective view showing an attaching process of the spacer shown in FIG.

FIG. 7 is a perspective view of a spacer according to an exemplary embodiment of the present invention.

FIG. 8 is a perspective view of a spacer according to another exemplary embodiment of the present invention.

FIG. 9 is a side view of a spacer according to another embodiment of the present invention.

FIG. 10 is a side view of a spacer according to another embodiment of the present invention.

FIG. 11 is a side view of a spacer according to another embodiment of the present invention.

FIG. 12 is a perspective view of the spacer shown in FIG. 11 attached to a reinforcing metal wire.

FIG. 13 is a perspective view of the spacer shown in FIG. 2 in a use state attached to a reinforcing metal wire.

FIG. 14 is a perspective view of the spacer shown in FIG. 2 in a state in which the spacer is attached to a reinforcing metal wire.

FIG. 15 is a perspective view of a conventional spacer in a used state.

[Explanation of symbols]

 11 Concrete 12 Reinforcing Metal Wire 13 Placement 14 Leg 15 Leg 16 Connecting Material 17 Raised 18 Concrete Reinforcing Metal Wire Support Spacer 19 Groove 20 Projection 21 Top End 22 Leg Tip 23 Gap between Raised 30 Synthetic Slab 31 Welded wire mesh 32 Base (deck plate) 33 Conventional concrete-reinforced metal wire rod support spacer 34 Projection portion 35 Mountain portion 37 Leg material 38 Connecting material 39 Top 40 Opening 41 Horizontal portion

Claims (10)

[Claims] 1. A leg portion (14) bent from a mounting portion (13) on which a reinforcing metal wire rod (12) buried in concrete (11) is placed.
Two legs 14a and 14b made of metal linear material continuing to
Are connected to two connecting members 16a and 16b made of a metal linear material welded on the mounting portions 13a and 13b, and these two connecting members 16a and 16b are
Each of the mounts 15a and 15b has a raised portion 17a and 17b protruding upward from the mounting portions 13a and 13b of the mount 15a and 15b, respectively, and is viewed from the front with one of the legs 15a directed to the other leg 15b. A concrete is characterized in that a gap is formed between the two connecting members 16a and 16b at a welding position with the installation portions 13a and 13b, and between the top end portions of the raised portions 17a and 17b of the two connecting members. Reinforcing metal wire rod support spacer. 2. One leg 15a to the other leg 15b
The gap p between the two connecting members 16a and 16b at the welding position with the mounting portions 13a and 13b viewed from the front with respect to the front end portion of the ridges 17a and 17b of the two connecting members is 2. The concrete reinforced metal wire rod supporting spacer according to claim 1, wherein the spacer is wider than the gap q. 3. An intermediate portion between the two leg members 15a and 15b of each of the two connecting members 16a, 16b is a raised portion 17a, 17b which faces each other upward and is raised. Raised portion 1 of the connecting members 16a and 16b
The part from 7a and 17b is straight,
The concrete reinforcing metal wire rod support spacer according to claim 1, wherein the spacers are parallel to each other and form a groove 19 into which the reinforcing metal wire rod 12 is fitted. 4. The raised portion 1 of the two connecting members 16a and 16b.
The portions continuing from 7a and 17b are straight and parallel to each other to form a groove 19 into which the reinforcing metal wire 12 fits, and the ends of the two connecting members 16a and 16b are used to mount the leg members. Projections 20a and 20b projecting outward from the part 13
The concrete reinforced metal wire rod support spacer according to claim 1, wherein the protruding ends 20a and 20b form ridges 17a and 17b protruding upward. 5. The ends of the two connecting members 16a and 16b are
Protruding portions 20a.2 protruding outward from the leg mounting portion 13
0b, and the projecting ends 20a, 20b form raised portions 17a, 17b projecting upward, and the concrete-reinforced metal wire rod supporting spacer according to claim 1 above. 6. The above-mentioned claim 1 characterized in that the two leg members 15a of the two connecting members 16a and 16b and the leg members 15b respectively form ridges 17a and 17b which are curved upward. Concrete-reinforced metal wire rod support spacer. 7. The ridges 17a and 17b curved upward are formed between the two leg members 15a and 15b of the two connecting members 16a and 16b, respectively.
The concrete reinforced metal wire rod support spacer according to claim 1, wherein the top end portions 21a and 21b of the 7a and 17b face each other. 8. Two legs 15a, 15 viewed from the side of the top end portions 21a, 21b of the two raised portions 17a, 17b.
The concrete reinforced metal wire rod supporting spacer according to claim 1, wherein the positions between b are different. 9. The ends of the two connecting members 16a and 16b are
Protruding portions 20a.2 protruding outward from the leg mounting portion 13
0b, and the projecting ends 20a and 20b form ridges 17a and 17b projecting upward.
2. The concrete-reinforced metal wire rod support spacer according to claim 1, wherein the two connecting members 16a and 16b are curved and recessed downward between the two leg members 15a and 15b. 10. The concrete reinforced metal wire rod support spacer according to claim 1, wherein both ends of the mounting portion 13 of the leg member 15 are bent and continue to the leg portions 14a and 14b.