JP2946017B2 - Locks for floor slabs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slab fitting for a slab, and more particularly to a slab for constructing a concrete floor by installing between beam forms of a reinforced concrete structure or a steel reinforced concrete structure. The present invention relates to a floor slab locking metal fitting whose main object is to ensure the locking state of each end portion of the floor slab.

[0002]

2. Description of the Related Art In a structure such as a reinforced concrete structure or a steel reinforced concrete structure, in order to construct a concrete floor, a floor slab called a flat deck made of a metal plate is installed between beam formwork of the floor. There is known a construction method for shortening and labor saving of construction.

[0003] At present, various types of floor slabs have been developed and adopted. This example will be described with reference to FIGS. 1 to 3 and FIG. The floor slab 1 has a plurality of ridges 3, 3,... Formed on the back surface thereof at equal intervals in parallel with the longitudinal direction of the rectangular metal plate 2, and the front surface is formed on the flat surface 4.

Both ends are pressed to press the ends of the ridges 3, 3,... To form flat end-close portions 5, 5. The end closing parts 5, 5
In order to be able to install the beam formwork in a stable locked state during construction, the beam formwork is configured to protrude from the inner wall surface of the beam formwork in advance, for example, by about 10 mm as a swaging margin.

[0005] A plurality of floor slabs 1 having such a configuration are arranged between mutually facing beam forms 6, and the end-close portions 5 thereof are engaged with the crosspieces 7 on the beam forms 6 and arranged. After nailing 8 is applied to the closing portion 5 and the pier 7, slab reinforcing bars 9, 9,... Are arranged on the surface of the floor slab 1, and concrete is poured and solidified to construct the floor concrete 10. I have.

[0006] In the case of the floor concrete 10 using the floor slab 1, it is preferable that the end allowance for the end-close portion 5 is overhanged by about 10 mm as described above, but if the overhang dimension is too large, as shown in FIG. At the time of concrete casting, a large gap A is formed in the lower part of the swaging margin, and after solidification of the concrete, it becomes a factor of losing the cross-sectional strength of the beam and causing the strength of the floor concrete 10 to be insufficient.

Also, due to the gap A, the function of integrating the floor slab 1 and the reinforcing bar 9 does not work, and the bite is deteriorated. Even if the concrete is poured and solidified, the function as the floor concrete 10 is achieved. May not work.

[0008] In order to construct the floor concrete 10 so that the floor slab 1 is stably held between the beam forms 6 and the gap A is not generated, a clearance of about 10 mm is required. . However, if the floor slab 1 is bent, it is difficult to ensure a uniform allowance for all the end-closing portions 5 laid, and the floor slab 1 may be displaced and fall off from the beam form 6. .

On the other hand, recently, for the purpose of resource conservation, there has been a tendency to use a wooden extruded plywood which has been conventionally used, a ceramic extruded plate or a slate type beam formed of a press molded product. Is increasing. However, a step of nailing or the like is required for the plywood beam formwork. In the case of a slate-based beam formwork, a process such as providing a metal anchor bolt or the like in advance and welding the end-closing portion 5 of the floor slab 1 through this is necessary so as not to damage the beam formwork. Has become.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve such problems of the prior art, and an object of the present invention is to stabilize a floor slab in a beam form. An object of the present invention is to provide a floor slab locking metal fitting that can be securely locked and that simplifies the work of constructing floor concrete and requires labor for arranging slab reinforcing bars and saves labor.

[0011]

Means for Solving the Problems In order to achieve the above object, the floor metal latch according to claim 1 is provided with a plurality of ridges on the back surface parallel to the longitudinal direction of the metal plate and at equal intervals. The surface is formed as a flat surface, and both ends are pressed to be an end-close part. In order to install a floor slab between the beam forms, a floor-plate locking metal fitting to be attached to the end-close part, At one end of the flat main body made of a horizontally long metal plate, a bent piece bent vertically downward, a folded piece continuously turned inside upward, and further on the back side of the main body And a holding piece having an insertion portion. According to a second aspect of the present invention, there is provided a latch for a floor slab, wherein a plurality of ridges are provided on a back surface in parallel with a longitudinal direction of the metal plate and at equal intervals, the surface is formed as a flat surface, and both ends are pressed. In order to install the floor slab to be the end close section between beam formwork,
A floor slab locking metal fitting to be attached to the end-close portion, wherein one end of a flat main body made of a horizontally long metal plate has a bent piece bent vertically downward, It is characterized by comprising a folded piece folded inward and upward, a holding piece having an insertion portion on the back side of the main body, and a protruding piece bent vertically downward.

According to a third aspect of the present invention, there is provided a slab locking metal fitting, wherein a plurality of ridges are provided on the back surface in parallel with the longitudinal direction of the metal plate and at equal intervals, the surface is formed flat, and both ends are pressed. In order to install the floor slab to be the end close section between beam formwork,
A floor slab locking metal fitting to be attached to the end-close portion, wherein one end of a flat main body made of a horizontally long metal plate has a bent piece bent vertically downward, A folded piece folded back inward and upward, and a holding piece further having an insertion portion on the back side of the main body, and at the other end of the main body, an upright piece that is vertically upright, And a support piece having a concave portion.

According to a fourth aspect of the present invention, a plurality of projections are provided on a back surface of the metal plate in parallel with the longitudinal direction of the metal plate and at equal intervals on the back surface, the surface is formed flat, and both ends are pressed. In order to install the floor slab to be the end close section between beam formwork,
A floor slab locking metal fitting to be attached to the end-close portion, wherein one end of a flat main body made of a horizontally long metal plate has a bent piece bent vertically downward, A folded piece folded inward and upward, a holding piece having an insertion portion on the back side of the main body, and a protruding piece bent vertically downward, and the other end of the main body has a vertically And a support piece having a concave portion which is continuously bent inward and has a concave portion.

According to a fifth aspect of the present invention, in the metal fitting for floor slab, a plurality of ridges are provided on the back surface in parallel with the longitudinal direction of the metal plate and at equal intervals, the surface is formed flat, and both ends are pressed. In order to install the floor slab to be the end close section between beam formwork,
A floor slab locking metal fitting to be attached to the end-close portion, wherein one end of a flat main body made of a horizontally long metal plate has a bent piece bent vertically downward, A folded piece folded inward and upward, and a holding piece having an insertion portion on the back side of the main body, and a locking piece having an insertion portion for an auxiliary body is provided at the other end of the main body, The auxiliary body, which is separate from the main body, has a horizontal insertion piece, an upright piece that is vertically erected upward continuously from the insertion piece, and further horizontally bent to the opposite side to the insertion piece, and has a concave portion. And a supporting piece having the same.

According to a sixth aspect of the present invention, there is provided a floor slab latch, wherein a plurality of ridges are provided on a back surface in parallel with a longitudinal direction of the metal plate and at equal intervals, the surface is formed as a flat surface, and both ends are pressed. In order to install the floor slab to be the end close section between beam formwork,
A left and right bent piece, which is a floor slab locking metal fitting to be attached to the end-close portion, and is formed by horizontally bending upper ends of a vertical main body composed of a horizontally long relatively thick metal plate, The center of the upper end of the main body is similarly horizontally bent from a position slightly higher than the left and right bent pieces to provide an insertion portion with the left and right bent pieces, and the upper bent piece remains at both ends of the upper bent piece. A wide vertical piece is provided at the upper end of the two extending pieces in the center of the upper end of the main body, and a support piece having a concave portion which is horizontally bent to the left and right bent sides successively thereto is provided. And

[0017]

According to the first aspect of the present invention, a plurality of locking members are mounted on one floor slab by inserting the insertion portion into the end-close portion, and are locked on the upper end surface of the beam formwork of the floor. A predetermined number of floor slabs are laid between the beam forms while the folded pieces of the metal fittings are placed and the folded pieces are brought into contact with the upper outer surface of the beam form. Then, slab reinforcing bars are arranged on the floor slab, concrete is poured, and the concrete is solidified to construct the floor concrete.

According to the second aspect of the present invention, a predetermined number of floor slabs are reliably formed on the beam form by the folded pieces and the protruding pieces in the same manner as described above.
Can be laid stably.

According to the third aspect of the present invention, a predetermined number of floor slabs are laid in the same manner as in the first aspect. The slab reinforcing bar is disposed in the concave portion of the support piece, and the slab reinforcing bar is sequentially disposed on the concave portion, and then concrete is poured and solidified to construct the floor concrete.

According to the fourth aspect of the present invention, the floor slab can be laid in the same manner as in the second aspect. In particular, the bent slab and the protruding piece are used to securely and stably lay the floor slab on the beam formwork. , Slab reinforcement
It can be arranged in a concave portion of the support piece.

According to the fifth aspect of the present invention, since the auxiliary body has a separate structure, the auxiliary body can be attached at the site after the auxiliary body has been previously attached, and the auxiliary body can be attached. Is simple.

According to the sixth aspect of the present invention, the insertion portion formed by the upper and right and left bent pieces can be mounted on the end-close portion of the floor slab and laid on the beam formwork.

[0023]

An embodiment will be described with reference to the drawings. In this embodiment, an example in which the floor slab 1 having the above structure is used will be described. However, various types of floor slabs have been developed as described above. It has a versatile structure applicable to floor slabs.

FIG. 4 shows a locking fitting 12 of the first embodiment, which is constituted by a horizontally long metal plate 13. At one end of the flat main body 14 of the metal plate 13, a bent piece 15 bent vertically downward, a folded piece 16 successively turned upward inside, and further on the back side of the main body 14. It has an insertion portion 17 that can hold the end-close portion 5 of the floor slab 1 and a long holding piece 18. The holding piece 18 preferably extends near the other end of the main body 14 as shown in the figure, but preferably has a width at least substantially equal to the upper end face of the beam formwork.

FIG. 5 shows a locking member 20 according to a second embodiment. A projecting piece 21 bent vertically downward is connected to the holding piece 18 of the locking member 12 according to the first embodiment. The other configuration is the same as that of the locking fitting 12 of the first embodiment.

FIG. 6 shows a locking member 25 of the third embodiment. A bent piece 15 and a folded piece 16 are provided at one end of the main body 14 in the same manner as the locking metal 12 of the first embodiment. , An insertion portion 17 and a holding piece 18. Also, the subject 14
At the other end of the body, an upright piece 26 vertically upright
And a support piece 28 having a concave portion 27, which is horizontally bent inward in succession to this. The recess 27 is provided for stably arranging the slab rebar as described later. In the drawing, one recess is formed in the longitudinal direction of the support piece 28, but a plurality of recesses may be formed. And
Any number may be formed in the short side direction, and each embodiment described below can be similarly formed.

FIG. 7 shows a locking member 31 of the fourth embodiment. The holding piece 18 of the locking member 25 of the third embodiment is shown in FIG.
And a protruding piece 21 bent vertically downward. The other configuration is the same as that of the latch 25.

FIG. 8 shows a locking member 35 of the fifth embodiment. The locking member 25 of the third embodiment is attached to one end of the main body 14.
Similarly to the above, a folded piece 15, a folded piece 16, and a holding piece 18 having an insertion portion 17 are provided, and a folded portion having an insertion portion 36 on the surface side of the main body 14 is provided at the other end of the main body 14. Locking piece 37 is provided. And this locking piece 3
The auxiliary body 38 having a separate structure that can be detachably inserted into the plug 7 is provided with an upright piece 40 that is vertically upright at the end of a flat insertion piece 39, and on the opposite side of the insertion piece 39 continuously to this. And a support piece 42 having a concave portion 41 that is bent horizontally.

FIG. 9 shows a locking member 45 according to the sixth embodiment, which is composed of a relatively thick metal plate 46. That is, the left and right bent pieces 48 and 49 obtained by horizontally bending both ends of the upper end of the vertical main body 47, and the center of the upper end of the main body 47 from the position slightly higher than the left and right bent pieces 48 and 48 in the same direction. The bent upper bent piece 49 and the main body 47
Extending pieces 50 and 5 extending vertically upward from the center of the upper end of the
0, a wide vertical piece 51 having a width substantially equal to the length of the left and right bent pieces 48, 48, and a horizontal piece 51 continuously bent to the left and right bent pieces 48, 48, And a support piece 53 having a concave portion 52.

An example of use of the third embodiment shown in FIGS. 10 to 13 will be described. The plurality of locking fittings 25 are attached to the end-closing section 5 of the floor slab 1 by inserting the insertion portion 17 of the locking fitting 25 into the end-closing section 5 of the floor slab 1. In FIG. 11, two locking fittings 25 are attached to the end-closing portion 5. Then, depending on the area to be used, a plurality of floor slabs 1 are provided with locking metal members 2.
5 is attached.

The floor slab 1 to which the locking fittings 25, 25,... Are attached as described above has the holding pieces 15 of the locking fittings 25, 25,. And a bent piece 1 of the locking metal fitting 25 on the outer side of the upper end of the beam formwork 6,6.
6 so that the end portions 6 of the floor slab 1 are in close contact with each other.
Are laid between the beam formwork 6 and 6 by adjusting the mounting state of the locking fitting 25 with respect to.

Next, the concave portion 2 of the support piece 28 of the locking member 25
7 are arranged on the slab reinforcing bar 9a, and a plurality of slab reinforcing bars 9 are orthogonally arranged on the slab reinforcing bars 9a, 9a,.
After arranging b, 9b, 9c, 9c, ... and binding them,
The floor concrete 10 is constructed by casting concrete to a predetermined thickness and solidifying it.

The above-mentioned use example is the same as the lock fitting 25 of the third embodiment.
.. Can be used in substantially the same manner, so that these use examples will be briefly described. Lock fitting 12 of the first embodiment
Is mounted by inserting the insertion portion 17 into the end close portion 5. Then, the holding piece 18 of the locking metal fitting 12 is placed on the upper end face of the beam formwork 6 and the folded piece 16 is brought into close contact with the outer upper end face of the beam formwork 6, so that the floor slab 1 is attached to the beam formwork 6. Place it between. In the locking member 20 of the second embodiment, since the folded piece 16 and the protruding piece 21 are closely fitted to the upper side surface of the beam form 6, the locking member 20 is formed by the beam form 6. It is possible to reliably maintain a stable locked state. These locking fittings 1
Since no recesses for supporting the slab reinforcing bar are formed in the slab reinforcing bars 2 and 20, concrete is poured after the slab reinforcing bar is disposed on the floor slab as in the conventional method.

The locking fitting 31 of the fourth embodiment is arranged between the beam forms 6 in the same manner as the locking fitting 20 of the second embodiment. Fifth
In the locking fitting 45 of the embodiment, since the auxiliary body 38 has a separate structure, the arrangement position of the lowermost slab reinforcing bar can be adjusted. Further, because of the separate structure, the auxiliary body 38 can be made of a material different from that of the main body 14, and the selection of the used material can be made freely.

The locking fitting 45 of the sixth embodiment is mounted by inserting the insertion portion 54 formed by the upper bent piece 48 and the left and right bent pieces 48, 48 into the end-close portion 5 of the floor slab 1. Then, the locking fitting 45 is installed so that the vertical piece 51 closely contacts the upper end outer surface of the beam formwork 6. The lowermost slab reinforcing bar is supported by the concave portion 52 of the supporting piece 53.

[0036]

Since the present invention is configured as described above, it has the following effects.

According to the first to fifth aspects of the present invention, the fitting can be easily mounted by inserting the insertion part into the end-close part of the floor slab, and the holding piece and the end-close part are welded. Alternatively, the main end on the bent portion side of the latch and the end-close portion can be fixed with rivets or the like, and can be mounted more strongly.

It is also possible to visually check whether or not the bent piece of the locking fitting is in close contact with the outer surface of the upper end of the beam form, and adjusts the length of the beam form according to the insertion amount. It is possible to prevent the floor slab from falling off or skidding, and the work can be performed safely and reliably.

As in the prior art, the margin is not required only for the floor slab, and there is no void at the time of the concrete casting described above, and the strength as designed can be maintained.

Further, in these locking fittings, a concave portion is formed in a support piece thereof, and the concave portion can support the lowermost reinforcing bar so as not to move. And labor saving can be achieved. Moreover, when the concrete is cast, the upright pieces and the support pieces of the locking fittings serve as anchors, and the floor slab is solidified with the concrete densely, so that it is possible to construct rigid floor concrete together with the reinforcing steel. .

According to the second and fourth aspects of the present invention, in addition to the above-described effects, the folded piece and the protruding piece are closely fitted to the upper end side surface of the beam form, so that it is more reliably stabilized. The locked state can be maintained.

According to the fifth aspect of the present invention, in addition to the effect that the auxiliary member is separate from the auxiliary member, the auxiliary member can be inserted into the main body of the engaging member and used in the field work. There is.

In the locking metal fitting according to the sixth aspect, the insertion portion formed by the upper bent piece and the left and right bent pieces can be attached to the end-close portion of the floor slab, and the insertion amount is set. It can be adjusted according to the length between beam forms.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a floor slab.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view as viewed from the back side.

FIG. 4 is a perspective view of a first embodiment of the locking fitting.

FIG. 5 is a perspective view of a second embodiment of the locking fitting.

FIG. 6 is a perspective view of a third embodiment of the locking fitting.

FIG. 7 is a perspective view of a fourth embodiment of the latch.

FIG. 8 is a perspective view of a fifth embodiment of the latch.

FIG. 9 is a perspective view of a sixth embodiment of the latch.

FIG. 10 is an explanatory view showing a mounted state of the floor slab and the locking fitting of the third embodiment.

FIG. 11 is a perspective view of the same.

FIG. 12 is a partially cutaway explanatory view showing the usage example.

FIG. 13 is a partially cutaway explanatory view showing the concrete floor.

FIG. 14 is a partially cutaway explanatory view showing a conventional floor concrete.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor slab 5 End closing part 6 Beam formwork 9a, 9b, 9c Slab reinforcement 10 Floor concrete 17 Insert part 25 Locking fixture 27 Depression 28 Support piece

Claims (6)

(57) [Claims] 1. A plurality of ridges are provided on the back surface at equal intervals in parallel with the longitudinal direction of a metal plate, the surface is formed as a flat surface, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-closed part for installation between molds, and one end of a flat main body made of a horizontally long metal plate is bent vertically downward. A latch for a floor slab, comprising: a bent piece, a folded piece that is successively folded inward and upward, and a holding piece having an insertion portion on the back side of the main body. 2. A plurality of ridges are provided on the back surface at equal intervals in parallel with the longitudinal direction of the metal plate, the surface is formed as a flat surface, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-closed part for installation between molds, and one end of a flat main body made of a horizontally long metal plate is bent vertically downward. Folded piece, a folded piece continuously folded upward inward, a holding piece having an insertion portion on the back side of the main body, and a protruding piece bent vertically downward. Characteristic locking metal fittings for floor slabs. 3. A plurality of ridges are provided on the back surface of the metal plate in parallel with the longitudinal direction of the metal plate at equal intervals, the surface is formed in a flat surface, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-closed part for installation between molds, and one end of a flat main body made of a horizontally long metal plate is bent vertically downward. A folded piece, a folded piece continuously folded upward inward, and a holding piece having an insertion portion on the back side of the main body. The other end of the main body stands vertically upward. A floor metal latch comprising: a raised piece; and a support piece having a concave portion that is bent inward continuously from the raised piece. 4. A plurality of ridges are provided on the back surface at equal intervals in parallel with the longitudinal direction of the metal plate, the surface is formed as a flat surface, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-closed part for installation between molds, and one end of a flat main body made of a horizontally long metal plate is bent vertically downward. A folded piece, a folded piece continuously folded upward inward, a holding piece having an insertion portion on the back side of the main body, and a protruding piece bent vertically downward. An anchor for a floor slab, comprising an upright piece that is vertically upright at an end thereof, and a support piece that is continuously bent inward and has a recess. 5. A plurality of ridges are provided on the back surface at equal intervals in parallel with the longitudinal direction of the metal plate, the surface is formed as a flat surface, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-closed part for installation between molds, and one end of a flat main body made of a horizontally long metal plate is bent vertically downward. A folded piece, a folded piece continuously folded upward inward, and a holding piece having an insertion portion on the back side of the main body, and an insertion portion for an auxiliary body is provided at the other end of the main body. In addition to a locking piece having a main body and an auxiliary body separate from the main body, a horizontal insertion piece, an upright piece that is vertically erected upward continuously from the insertion piece, and further on the opposite side to the insertion piece And a support piece having a concave portion which is bent horizontally and has a concave portion. Locking fittings. 6. A plurality of ridges are provided on the back surface at equal intervals in parallel with the longitudinal direction of the metal plate, the surface is formed flat, and both ends are pressed to form a floor slab as an end-close portion. An anchor for floor slab to be attached to this end-close part for installation between formwork, and the upper ends of a vertical main body composed of a horizontally long relatively thick metal plate are horizontally arranged at both ends. Bent left and right bent pieces, and an upper bent piece in which the upper end central part of the main body is similarly horizontally bent from a position slightly higher than the left and right bent pieces to form a plug with the left and right bent pieces, 2 at the center of the upper end of the main body remaining at both ends of the upper bent piece
A slab lock comprising a wide vertical piece at the upper end of the two extension pieces, and a support piece having a concave portion that is horizontally bent to the left and right bent sides in succession to the wide vertical piece. Metal fittings.