JP2000034784A - Spacer concurrently used as insert - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spacer concurrently used as an insert in a new structure for achieving efficient construction of a slab and more safely in working. SOLUTION: A support 3 is longitudinally provided at the upper part of the center of a bearing surface disc 4 to be set up on a form panel, a vertical hole 31 is formed ranging from the lower face of the disc 4 into the support 3 and a female screw 32 is provided in the vertical hole 31 to be threadedly engaged with a hanging bolt. On the other hand, a bearer 6 is provided at the upper end of the support 3 for supporting a slab bar at a height corresponding to a specified concrete-covered thickness A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a spacer for securing a concrete covering thickness in a slab portion of a reinforced concrete structure, and more particularly to a spacer having a function as an insert for suspending a suspended ceiling, piping, or the like. It is an object of the present invention to provide a spacer which is also used as an insert.

[0002]

2. Description of the Related Art In the construction industry in Japan, demands for streamlining construction and shortening the construction period have increased with the enlargement of construction work. Construction work, slab concrete work, and other rebar work and formwork work are undertaken by workers in various industries according to the progress of the work, making it difficult to rationalize the work. Building a building with excellent safety and durability, such as verification and confirmation of construction and approval of the construction supervision, requires a lot of manpower and requires a relatively long construction period. A considerable amount of time and labor has to be spent on various wiring, plumbing work, and interior work such as floor, side wall, and ceiling.

[0003] Generally, a reinforced concrete building is
A suspended ceiling is arranged at the bottom of the floor slab, and wiring and piping etc. are to be performed between the floor slab and the suspended ceiling, and the construction procedure is as follows: A mold to be formed is formed, and a shoring is installed to support and fix the same. The mold is configured as shown in a perspective view of the insert of FIG. 13 and a longitudinal sectional view of the insert used state of FIG. The inserted insert is driven into a required portion of the formwork and fixed.

The insert C is formed of a synthetic resin into a substantially cylindrical shape, and a lower portion thereof is provided with a flange-shaped seating surface portion which is mounted on the upper surface of the formwork. At a position on a horizontal straight line intersecting with the center, an insert body portion D in which support frame portions E, E,... In the lower part of the center of the disk-shaped striking surface portion G, a cylindrical suspension bolt screwing portion H having a female screw portion vertically opened downward is protruded downward, and the suspension bolt screwing portion H is formed. At the position symmetrical with respect to the axis of H, the nails J, J for temporary fastening have insert metal parts F projecting parallel and downward from each other, and are in an unused state, that is, when the product is not used. At the stage of distribution, the insert body D is The suspension bolt threaded portion H of the insert metal part F is in a hollow portion around the axis of the insert body D, and the nails J, J for temporary fixing are frame portions E, E,... For supporting the insert body D. Each of them is combined into a structure that is press-fitted halfway.

[0005] In this state, the driving nail portion J,
The tip of J is inserted into the support frame E,
E,..., Are slightly projected or hidden from the mounting position of the form panel 8, and the disk-shaped striking surface portion G of the insert fitting portion F located above the insert body portion D is removed. The nail is temporarily hit with a tool, the nails J, J for temporary fixing are driven into the formwork panel 8, and the suspension bolt screwing portion H is fixed in a state of being lowered to a position substantially coincident with the lower surface when the slab is completed. After that, concrete is poured, and after the curing, the form panel 8 is removed, and then embedded in the concrete.
By cutting off from the root portion as shown by the arrow in the figure, the suspension bolt threaded portions H, H,.
... are arranged.

Normally, the insert C is to be mounted at a predetermined position by the form carpenter during the forming work of the form, and the insert position is set in order to accurately perform the driving and fixing work on the form as described above. Careful confirmation is required, so that it is necessary to spend time on the construction even if it is installed alone. In addition, after removing the formwork panel 8 that has passed the existing period, it will project downward from the lower surface of the cast concrete. If the sharp nails J, J are left with their sharp tips protruding as they are, there is a risk that they may cause harm at the time of attic work such as wiring, piping, inspection and repair. Therefore, to avoid such a situation,
It has been necessary to remove all of the pieces one by one by hand at high places, and additional man-hours have been added, which has made it quite difficult to improve the work efficiency before and after the concrete casting.

[0007] In addition to the work of installing the insert C, the work of arranging reinforcing bars is added to the work before and after the concrete is cast. In the rebar arrangement work, the reinforcer must lay a large number of rebars in an arrangement according to the rebar arrangement diagram and ensure that a predetermined concrete covering thickness is secured on the formwork panel. As shown in the perspective view of the state where the conventional spacer K is used, the important points of the reinforcing bars laid using the spacer K are supported and fixed over many places,
It is necessary to carry out the work such that the reinforcing bars are floated from the formwork. As described above, the work is performed while avoiding the inserts C, C,... In addition, any of the inserts C, C,... May be inadvertently moved or kicked off in some cases, causing a situation in which the insert C is not installed at a predetermined location. I was

[0008] As described above, the present invention has been used for many years before and after concrete placement, because it has a completely different construction purpose and a different work person in charge, even though it is an installation work on the same formwork surface. Questioning the actual situation of inserts and spacers that have been handled separately across the board, and judge whether it is not possible to improve the handling and workability of these fittings in order to achieve efficient slab construction and improved safety From this, we started development and research very quickly, repeated trial and error over a long period of time, and repeated many trial productions and experiments.As a result, this time, we finally have both functions, and it is possible to complete the installation work only with the reinforcing work The present invention has succeeded in realizing an insert-cum-spacer having a novel structure that can be realized. Hereinafter, the structure will be described in detail together with an embodiment representative of the present invention shown in the drawings. And the.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As will be clearly understood from the embodiments of the present invention shown in the drawings, the insert and spacer included in the present invention basically has the following structure. Has become. That is, a support portion having a predetermined height is vertically provided at the center of the upper surface of a seat panel portion installed at a predetermined position on the form panel, and the support portion is directed upward from the lower center of the seat panel portion into the support portion. A vertical hole or a vertical hole is drilled, and a female screw portion for screwing a suspension bolt is provided in the vertical hole or the vertical hole, and at the height position corresponding to the concrete covering thickness from the lower surface of the seat panel portion. Is a spacer which also serves as an insert, provided with a receiving portion for supporting the slab muscle.

[0010] The insert / spacer having the basic structure is provided with a seat plate portion which is provided at a predetermined position on the form panel, and has a predetermined height at the center of the upper surface of the seat plate portion. A vertical hole portion or a vertical hole portion is provided vertically from the lower surface center of the seat panel portion, and a vertical hole portion or a vertical hole portion is bored toward the inside of the support portion, and any of the vertical hole portion or the vertical hole portion is provided. While a female screw portion for screwing the suspension bolt is provided inside, a receiving support portion for slab muscle support is provided at the upper end of the pillar portion and at a height position corresponding to the concrete covering thickness from the lower surface of the seat plate portion. The insert / spacer whose gist is
And, at the center of the upper surface of the seat panel installed at a predetermined position on the formwork panel, a column of a predetermined height is vertically installed,
While a vertical hole or a vertical hole is drilled toward the inside of the support portion from the lower center of the lower surface of the seating panel, an internal thread portion for screwing a suspension bolt is provided in the vertical hole or the vertical hole, At the upper end of the support portion and / or the upper end of the rising portion which is close to and upright from the support portion and which corresponds to the concrete covering thickness from the lower surface of the seat panel portion, a support for slab reinforcement is provided. It also includes a spacer that also serves as an insert that has a configuration in which a support is provided.

The seat panel serves as a supporting foot for supporting the support portion and the receiving support portion so that the support portion does not fall down, and is formed integrally with or detachably from the support portion and separately. Formed in the form of a flat plate that is placed flat on a formwork panel, and provided with a plurality of holes for temporary fixing suitable for driving nails for temporary fixing. It is composed of a plurality of support rods, and constitutes an overall shape equivalent to a flat plate, for example, by a combination of a plurality of support rods extending radially from the lower end of the support portion, substantially a board surface It is also possible to use a device capable of performing a stable function equivalent to the above.

The support portion has a function of supporting a support portion for a reinforcing bar at a predetermined height position, and further has a suspension bolt for ceiling surface finishing material components or wiring and piping screwed therein. It must also have the function of securing a female screw part to support the weight of the reinforcing steel to be supported, and have a strength that does not hinder the suspension support of the suspension bolt. For example, it is desirable to form the seat plate portion separately from a metal or a synthetic resin having excellent corrosion resistance. Preparing different types of pillars and using them for each concrete overlay thickness, preparing several types of pillars color-coded for each overlay thickness dimension and purpose of use,
It is also possible to appropriately select, adopt, and combine them from among them.

Further, as shown in an embodiment which will be described later, the support portion has a vertical hole portion opened downward along the axis thereof, and a female screw portion is directly formed in the vertical hole portion. Alternatively, a female screw forming part such as a metal nut is concentrically embedded in the vertical hole portion, and the hanging bolt is embedded and integrated by screwing, hooking, insertion bonding or other known means for integration as appropriate. Screwing, or configured to allow suspension, or to form a vertical hole that is vertically penetrated along the axis, and for the vertical hole, of the supporting portion that supports the reinforcing steel In addition to being able to insert and assemble a supporting rod portion having a female screw portion, and to enable screwing and suspension of a suspension bolt, for example, a metal nut is concentrically arranged, integrated and fixed. After being molded into a synthetic resin, or after being molded into a cylindrical shape, press in a metal nut, It may be assumed to have been constant.

Further, the female screw portion may be partially extended to the outside of the column portion and protruded into the cast concrete in an engagement state, or may be fitted to a reinforcing bar supported by the support portion. It is also possible to add a structure that improves the durability of the suspension bolts, such as to prevent it from falling downward. It would be extremely advantageous if the sealing lid, which was made of a fragile thin portion at the lower end of the portion and was easily damaged by press-fitting of the suspension bolt, was formed integrally with the lower end opening.

The receiving portion serves to support the arranged slab streaks at a height at which a predetermined concrete covering thickness is attained, and serves to support a middle portion of the reinforcing bars or a crossing portion of the reinforcing bars arranged vertically and horizontally. It should be provided with a concave or hook-shaped portion suitable for supporting, and in the case of holding a reinforcing bar crossing portion, a concave or hook on the side corresponding to one of the vertical and horizontal reinforcing bars. It is possible to enable cross-shaped support by forming the shape-like portion at a position one step lower and by setting the size difference to be approximately the same as the diameter of the reinforcing bar used, Furthermore, if necessary, a set of several step sizes that match the diameter of various rebars, for example, those that have different dimensions for each rebar diameter according to the JIS standard, should be available. Is also possible.

Further, the supporting portion is formed, for example, by forming a recessed portion for supporting a reinforcing bar in four wall portions of the peripheral wall so as to be able to support either a crossing portion of the reinforcing bar or a middle portion of the reinforcing bar. Outside, it is possible to arrange the recessed portions for reinforcing bar support only on two opposing sides, and to form only the middle portion of the reinforcing bar or to support only the lower reinforcing bar of the crossover, or It is formed integrally with the strut portion, or separately from the strut portion, two pairs of rising portions are vertically suspended from the seat panel portion at a position close to the strut portion in a pair or a cross-shaped arrangement, and the upper end thereof is dedicated to it. In addition to the above, it is configured such that it is formed in conjunction with the upper end of the support portion, and a support portion is protruded from the lower portion, inserted into the vertical hole portion of the support portion from above, and fitted. Or alternatively, a female screw portion is integrally formed inside the support rod portion and opened downward. The female screw portion is arranged in the column portion by being inserted into the vertical hole portion of the column portion from above and fitted, and the female screw portion is opened below the vertical hole portion of the column portion. It is also possible to have done.

Furthermore, the insert / spacer according to the present invention also includes a spacer having the following constitution which can achieve the same object. That is, a column having a predetermined height is vertically installed at the center of the upper surface of a seat panel installed at a predetermined position on the form panel, and penetrates through the column above the center of the lower surface of the seat panel. In this way, a vertical hole portion is formed as a spacer main body while the spacer main body is separate from the spacer main body, and the lower end side can be fitted into the spacer main body vertical hole portion, and a suspension A female screw part for bolt screwing is formed on a supporting body as a supporting rod part formed by drilling, and the supporting body supporting rod part is fitted into the vertical hole part of the spacer main body, so that it is suspended in the vertical hole part of the spacer main body. A female screw portion for screwing the lower bolt is provided, and a receiving portion for supporting the slab muscle is provided at a height position corresponding to the concrete covering thickness from the lower surface of the seat plate portion. It is a spacer that also serves as an insert.

Further, as a more specific example of a spacer which also serves as an insert having this structure, a column having a predetermined height is vertically provided at the center of the upper surface of a seating panel installed at a predetermined position on a form panel. The spacer body is formed by drilling a vertical hole so as to penetrate through the inside of the support column portion from above the center of the lower surface of the seating panel portion, thereby forming a spacer body. A support member which can be fitted to the spacer main body vertical hole portion at the lower end side thereof, and which has a female screw portion for threading a suspension bolt therein. The support body support rod is fitted into the spacer main body vertical hole, so that a female screw part for screwing a suspension bolt is arranged in the spacer main body vertical hole, and At the upper end of the support, the concrete A height position corresponding to Riatsu is insert serves spacer of as 受支 section for the slab muscle support is provided.

Similarly, a column having a predetermined height is vertically provided at the center of the upper surface of the seat panel disposed at a predetermined position on the form panel, and the support section is located above the center of the lower surface of the seat panel. A vertical hole portion is formed so as to penetrate the support portion to form a spacer main body, and the lower end side can be fitted into the spacer main body vertical hole portion separately from the spacer main body, and the inside thereof is formed. Is formed in a support body as a support rod portion having a female screw portion for screwing a suspension bolt, and the support body support rod portion is fitted into the spacer main body vertical hole portion to form a spacer main body vertical hole. A female screw portion for screwing a suspension bolt is provided in the portion, and an upper end of a support portion and / or an upper end of a rising portion which is in the vicinity of the support portion and which stands upright. At the height position equivalent to the concrete covering thickness from the bottom of the panel,
The invention also includes an insert-cum-spacer having a structure in which a receiving portion for supporting the slab muscle is provided.

The spacer body functions as a support member for supporting and fixing the support body at a predetermined position, and also functions to secure a female screw portion for suspending the suspension bolt. Should the seating board be integrated, or the seating board beneath the strut should be integrated, and a rising part should be erected at a position close to the strut, Alternatively, the strut and seat panel,
Alternatively, the strut portion, the rising portion and the seating panel portion are manufactured separately, and then inserted into a predetermined location on the seating panel portion, screwed in, welded, etc., and configured to be integrated by appropriate means such as welding. It should be made of molded products such as metal or synthetic resin with excellent corrosion resistance, and should be made of a material that does not easily rust or deteriorate over a long period even in concrete. desirable. The support body is supported and fixed to the column portion of the spacer body, and the slab streaks are placed at a predetermined height position,
There is no supporting rod formed with a supporting part, or a supporting part, and there is no female part for screwing a suspension bolt along the axis from the lower end of the supporting part which simply serves as a dish-shaped head. A threaded portion is formed, so that the support portion can be inserted into the vertical hole portion of the support portion, such as a columnar or prismatic shape, so that it can be simply press-fitted, fitted and integrated. Or a male threaded thread, which is screwed into and integrated with a vertical hole of a female threaded column. In the case of a supporting rod having a receiving part, the receiving part is not limited to the one integrally formed on the supporting part, and the receiving part can be screwed on and removed from the supporting part. Even if it is temporarily fixed on the formwork panel, it is convenient if it is configured to be able to change the direction in a direction suitable for supporting the slab muscle by rotating the receiving part by rotating it Becomes In the following, the structure of the present invention will be described in detail, together with the embodiment shown in the drawings.

[0022]

EXAMPLE 1 A perspective view of the insert / spacer 1 of FIG. 1, a longitudinal sectional view of the insert / spacer 1 of FIG. 2, a perspective view of the state where the insert / spacer 1 of FIG. 3 is installed, and a concrete of FIG. The example shown in the vertical sectional view of the slab with the suspended ceiling shown in FIG. 5 and the suspended ceiling shown in FIG. 5 is included in the present invention having a basic structure in which the receiving support 6 is integrally formed at the upper end of the support 3. 1 shows a typical example of the insert / spacer 1 to be used.

The insert / spacer 1 has the receiving portion 6, the column portion 3 and the seat plate 4 integrally formed of synthetic resin, and is formed of a disc-shaped seat plate 4. At the center, a columnar column 3 projecting upward is vertically provided, and on the outer peripheral side, for example, 90 are provided temporary fixing holes 41, 41,. Each of the pillars 3 is formed so as to have a flange-like appearance, and a concentric vertical hole 31 is drilled to a predetermined depth in a lower portion of the column 3.
A female screw portion 32 formed by engraving a female screw on the inner peripheral surface of a metal cylindrical member is press-fitted and fixed.

The female screw portion 32 is configured so that the ceiling surface suspension bolt 7 can be screwed and hung. The female screw portion 32 may be integrated by embedding at the time of molding the main body portion of the insert / spacer 1. Alternatively, after the main body portion of the insert / spacer 1 is formed of metal instead of synthetic resin, the vertical hole portion 31 may be formed and the female screw may be formed by cutting.

The receiving portion 6 formed on the column portion 3 is formed in a box frame shape having an open upper surface, and the four side wall portions are cut out in U-shape, respectively, to form a reinforcing bar receiving portion. Concave notch 61,
61 are formed, and all the recesses 61,
.. Have the same depth, and a dimension A from the bottom of the edge of the reinforcing bar receiving recess 61, 61,. Further, the receiving support portion 6 is formed to have a width larger than the outer dimension of the support portion 3 so that the receiving support portion 6 is prevented from falling out after the concrete is cast. I have.

[0026]

Embodiment 2 The perspective view of the insert / spacer 1 of FIG. 6 and the longitudinal sectional view of the insert / spacer 1 of FIG. 7 show another embodiment included in the insert / spacer of the present invention. And four recesses 61, 6 formed in the receiving part 6 for supporting the reinforcing steel.
By setting the confronting arrangements of 1,... At the same height, and by arranging adjacent ones with a height difference, the crossing portion of the reinforcing bar can be reliably supported. It is composed.

An upper surface of the disk-shaped seat disk 4,
Triangular plate-shaped reinforcing ribs 42, 42,... Are integrally provided at every 90 degrees in the circumferential direction between the columnar column portion 3 and the outer peripheral wall surface, and the four reinforcing bar receiving recesses of the receiving portion 6 are provided. Parts 61, 61,
Among the pair, the height of a pair of confronting ones is set to be one step lower than the other pair of the contiguous ones by the diameter of the rebar, and the pair of lower notches 61, The dimension A from the lowermost edge of 61 to the bottom surface of the seat panel 4 is set to be the concrete covering thickness.

Further, a vertical hole 31 opening to the lower surface is formed below the center of the seat panel 4 and the column 3, and a female screw is formed in the vertical hole 31 on the inner peripheral surface. In addition to the built-in cylindrical metal female screw portion 32, the female screw portion 32 is provided.
The lower edge of the hole is reduced in diameter so that the opening edge of the vertical hole portion 31 is engaged with the lower edge, forming a structure for preventing the female screw portion 32 from falling off. for,
It is also possible to provide a sealing lid (not shown) which is made of a fragile thin portion and is configured to be damaged by press-fitting of the suspension bolt 7 and to prevent inflow of fresh concrete.

[0029]

[Embodiment 3] In the example shown in the vertical sectional view of still another insert / spacer 1 shown in FIG. 8, an upright portion 6 for a support portion is provided separately from the support portion 3, and a seat plate portion close to the support portion 3 is provided. 4 is a representative embodiment of the structure formed upright and formed in an intersecting arrangement on the upper surface 4. At the center of the upper surface of the disc-shaped seating surface 4, a column 3 is protruded and formed, and below the center thereof, a vertical hole 31 opening to the lower surface is formed. A female screw is directly engraved on the inner peripheral surface of the portion 31 to form the female screw portion 32.

Then, two pairs of rising portions 6, 6, which are arranged in an intersecting manner with a slight gap in the support portion 3, are provided.
6 and 6 are erected and formed, and one of the paired rising portions 6 and 6 is formed.
And the other rising portions 6 and 6 which are orthogonal to each other, have different heights at least equal to or greater than the diameter of the slab streaks 9, and are provided with recessed notches 61 and 61 for reinforcing bar support, respectively. The confronting portions are set at the same height, and the adjacent rising portions 6, 6 are arranged so as to have a height difference corresponding to the diameter of the approximately slab streaks 9, thereby forming a cross-shaped portion. The crossing portions of the arranged slab streaks 9, 9 can be reliably supported. Reference numeral 62 denotes a reinforcing rib for increasing the strength of the rising portion 6 and reliably supporting the slab streaks 9 at a predetermined height position.

[0031]

Embodiment 4 A perspective view of the insert / spacer 1 of FIG. 9 and a longitudinal sectional view of the insert / spacer 1 of FIG. 10 show a spacer body 2 having a column 3 and a seat panel 4. , Formed separately from this,
This is an embodiment of the insert / spacer 1 having a typical structure formed by combining the support portion 6 and the support body 5 including the support rod portion 62 protruding below the support portion 6.

In the insert body, a column 3 having a predetermined diameter is erected at the center of a disc-shaped seating panel 4, and a vertical hole 31 penetrating vertically is formed in the column 3. Between the outer peripheral surface of the column 3 and the upper surface of the seat panel 4 in the circumferential direction 90.
Are provided at every time, and holes 41, 41,... For temporary fixing penetrate in the seating board portion 4 between the reinforcing ribs 42, 42,. In the vertical hole 31 of the support 3, a support body 5 is formed by projecting a support rod 62 vertically downward below the support 6.
However, the supporting rod portion 62 is configured to be inserted and fitted therein. In the supporting rod portion 62, a female screw mounting hole 63 opened at the lower end is formed, and a metal With a cylindrical member,
A cylindrical rod portion 31 is formed by press-fitting a female screw on the inner peripheral surface to form a female screw portion 32. By combining the spacer body 2 with the support body 5, the column portion 3 is formed.
The supporting rod portion 62 and the female screw portion 32 are concentrically arranged in the vertical hole portion 31 of the first embodiment, and the suspension bolt 7 can be screwed into the female screw portion 32 from below the vertical hole portion 31. I have.

The female screw portion 32 is formed by engraving a female screw on the inner peripheral surface of a metal cylindrical member, and is inserted and fixed into the support rod portion 62 by press-fitting. It is also possible to form a concave-convex shape for increasing the frictional force on the outer peripheral surface of the cylindrical member, and when the receiving portion 6 and the supporting rod portion 62 of the supporting body 5 are formed of synthetic resin, In addition to being able to be integrated and fixed at the same time, the support body 5 including the receiving portion 6, the supporting rod portion 62 and the female screw portion 32 is integrally formed of metal, and only the female screw of the female screw portion 32 is post-processed. It is also possible to manufacture.

[0034]

Fifth Embodiment An exploded perspective view of FIG. 11 and a longitudinal sectional view of FIG. 12 show still another spacer 1 for an insert-and-use spacer 1 in which a spacer main body 2 and a separate support body 5 are combined. An example is shown, in which the spacer main body 2 has a support portion rising portion 6 separately from the support portion 3.
This is a typical embodiment of the present invention, which is formed so as to be erected and formed in the vicinity of the column 3. That is, the insert body 2
The cylindrical support 3 is formed at the center of the upper surface of the disc-shaped seating plate 4 and is formed to project therefrom, and a vertical hole 31 penetrating vertically is formed at the center thereof. At the same time, a pair of rising portions 6 and 6 are provided to stand up and form a pair of rising portions 6 and 6 sandwiching the supporting portion 3 at the upper end thereof. 61, 61, and their roots are reinforced with reinforcing ribs 62, 62,....

On the other hand, as can be clearly seen from the exploded perspective view of FIG. 11, the support body 5 has an upper end portion formed in a dish-like shape, 61
In addition to the above, it is formed on a receiving head 51 which also functions as a receiving supporting part on which the slab streaks 9 can be placed, and a lower part thereof has a trunk rod part 52 having a length substantially corresponding to a concrete covering thickness. Is formed by engraving a female screw portion 32 opening at the lower end by using the trunk rod portion 52, and is formed in the column portion 3 vertical hole portion 31 of the spacer body 2. On the other hand, by combining the body rod portion 52 of the support body 5, the body rod portion 52 and the female screw portion 32 are concentrically arranged in the vertical hole portion 31 of the support portion 3, and the concrete curing period elapses and the mold is removed. Later, the male screw portion of the suspension bolt 7 is inserted into the vertical hole 31 at the center of the seat plate 4 of the insert / spacer 1 of the present invention, which is exposed on the concrete form contact surface, and the female screw portion is formed. 32, the suspension bolt 7
Are screwed and joined to the insert / spacer 1.

[0036]

[Embodiment 6] Still another example of the insert / spacer 1 shown in the perspective view of FIG. 13 and the side view of FIG.
The structure of the upright portion 6 for the support portion is different from that of the fifth embodiment, and the insert main body 2 has a cylindrical support portion at the center of the upper surface of the disc-shaped seating portion 4. 3 is projected and formed, and a vertical hole portion 31 is formed at the center portion thereof in a vertically penetrating manner.
1, a female screw portion 3 opening at the lower end
The structure in which the body rod portion 52 of the support body 5 separate from the insert body 2 is formed by projecting and forming the body rod portion 52 engraved with 2 is integrated with the above-described embodiment. 5 is the same.

However, in the insert body 2 of this embodiment, at a position where a slight gap is provided between the column portions 3, the insert body 2 is provided on both sides of the column portion 3 and on the upper surface of the seat panel 4 which is a portion orthogonal to the column portion. Are formed integrally in advance, and relatively thick steel rods are bent and formed on the temporary attachment portions 43, 43,. In the fifth embodiment, the rising portions 6 formed integrally with the seat panel portion 4 in the fifth embodiment can be replaced with the rising portions 6 separately formed so as to have a side shape and temporarily assembled and combined in an upright shape. It has a structure.

In the embodiment, the temporary attachment portions 43, 4
3, ... are pushed in from the top and fitted with upward concave grooves, but in addition, they are laterally pressed by lateral concave grooves to fit and temporarily attach. Various types of temporary attachment structures such as a structure, a structure in which a concave portion or a hole is provided in the seat panel portion 4 to be fitted and temporarily attached by pushing or inserting, or a combination of these as appropriate. Adoption is possible.

The upright portion 6 of the side saddle type prepared as a separate body is made of a steel rod having a thickness that can be expected to have strength enough to withstand the load of the slab streaks 9 to be supported. 4 are bent so as to be substantially M-shaped in a side surface, and the concave portions on the upper sides thereof become rebar receiving recesses 61, 61, and are formed into a side surface substantially M-shaped. The lower end of either one of the two vertical sides is horizontally bent so as to be continuous, and the other lower end is horizontally bent so as to be opposed to each other. The temporary bending portions 43, 43,...
... will be fitted and integrated. Therefore, in this embodiment, the seat plate 4 on which the support 3 and the temporary attachment portions 43, 43,... Are formed is made of plastic, and the support 4 having the female screw 32 and the side saddle are formed. Mold riser 6
Are formed from three parts, each of which is formed as a separate metal part.

[0040]

[Operation] The insert / spacer 1 of the present invention having the above-described structure is used for a building design stage or for a formworker to suspend a ceiling or a suspension bolt for suspending wiring and piping. In the construction stage and the like where the insert is installed, the placement of the insert and the arrangement of the reinforcing bars are arranged so that almost all of the positions at which the spacers supporting the slab bars are arranged, and the formwork according to this plan, When the formwork is assembled, only the insert installation spacers that do not match the arrangement of the spacers are provided with the insert / spacer 1 in advance in the formwork, and the temporary fixing holes 41, 41 provided in the seat panel 4 are provided. Driving nails, tacks, etc. into
After temporarily assembling the formwork, including its location, or after assembling the formwork, the reinforcer arranges the reinforcing steel for the concrete according to the plan, and inserts and spacers at the intersections of the reinforcing bars vertically or horizontally or below the middle of the reinforcing bars. 1 is inserted and installed so as to be temporarily fixed by receiving a load from a reinforcing bar, and all other parts, that is, all of the insert installation positions that do not match the arrangement of the spacers, are arranged and fixed.

At this time, the insert / spacer 1 is
The distance between the adjacent ceiling plates is substantially constant, for example, 90 cm, so that the ceiling plate can be suspended and held uniformly over the entire ceiling surface in the room.
At the height position of the concrete covering thickness dimension A of about 20 to 70 mm from the upper surface of the formwork panel 8, the uppermost portion of the recessed portion 61 for the reinforcing bar receiving support of the receiving portion 6 is arranged. Install so that the lower edge is located. After the reinforcement is completed, concrete is cast and cured for a predetermined period, and then the formwork panel 8 is removed and piping and interior work are performed. At this time, only inserts temporarily fixed with nails or tacks are used. The part of the small number of insert / spacers 1 protruding from the slab surface of the nails and rivets is cut off using tools such as nippers and pliers. The ceiling bolt 71 is suspended and installed by inserting and screwing the suspension bolts 7 into the female screw portion 32. Further, although not shown, various wirings and pipes are suspended and installed.

The receiving portion 5 of the receiving portion 6 or the supporting rod 5
The reference numeral 1 designates the width or diameter of the column 3 or the rod 52.
It is set larger than that, and it realizes an engagement structure that overhangs in the horizontal direction in the cast concrete, and reliably transmits and supports the vertical load applied to the suspension bolt 7 to the concrete slab. Thus, the fixing strength of the suspension bolt 7 is guaranteed.

On the other hand, an insert 1 having a receiving portion 6 which is formed in a rectangular box shape opened on the upper surface and has recesses 61, 61 for reinforcing bar receiving formed on each of the four sides thereof with a one-step height difference.
Alternatively, a slight gap is placed in the column portion 3, and two pairs of rising portions 6, 6, 6, 6 are erected and formed in an intersecting arrangement, and the recesses 61, 61, 61, 61 Each of the inserts 1 is formed at the intersection of the slab reinforcing bars 9, 9, ... arranged in a lattice arrangement, and supports both the vertical and horizontal reinforcing bars which intersect in a stepped manner. Becomes

Further, the insert-cum-spacer 1 manufactured separately from the spacer body 2 and the support body 5 is separately formed at the manufacturing stage, and is used as a pre-assembled and integrated body in a predetermined manner. In addition, they are transported as separate items to the installation site, and are used in appropriate combination at the stage of arranging them on the formwork. In the case of the latter use, first, the spacer bodies 2 are arranged at predetermined intervals, After temporarily attaching and temporarily fixing using the temporary fixing holes 41, 41,... Provided in the seat panel 4, the crossing portion of the slab streaks 9, 9,. Depending on the situation such as where there is no reinforcement, a support 5 having an optimal structure is selected and adopted, and the columnar vertical hole 31 formed in the support 3 of the spacer body 2 is A support rod 62 of the receiving support 6 of the selected support 5; Insert the cylinder rod portion 52 from above, so as to integrate, rebar 受支 for cut-outs 61 in 受支 section 6,
Are integrally formed, the bearing 2 is rotated around the axis of the support rod 62 at the stage of the combination.
Is adjusted so that the recesses 61, 61,...
... All of the concrete is floated and arranged at a predetermined concrete covering thickness A, and then the fresh concrete is cast as before.

If necessary, a spacer body 2 having a different height of the column 3 is formed for each of the different dimensions of the concrete covering thickness A, and a different color is used each time the concrete covering thickness A changes. If the contrivance is made, it is possible to easily and accurately select and install the spacer main body 2 for each concrete covering thickness, thereby reducing mistakes in assembling and determining at a glance when checking the installation state. And can be very convenient.

[0047]

As described above, according to the insert / spacer of the present invention, the insert and the spacer, which have been handled separately until now, are combined as a single unit, and mainly the reinforcing arrangement is installed and fixed. Although it was the same work of attaching to the formwork, they were separately shared by the formwork and the reinforcing work, and the installation work was carried out. Inefficiency can be eliminated, and separate work is required, so the formworker has to install various equipment such as ceiling interior, wiring and piping according to the construction drawing at the stage of formwork panel installation. The inconvenience that the insert was correctly installed and fixed at the suspension point, but the position was changed without permission at the time of rebar arrangement work that was not responsible for it, will be completely resolved. The excellent feature that becomes becomes.

In particular, the insert / spacer 1 in which the width of the receiving portion 6 having the most basic structure described in the first embodiment is set to be larger than that of the column portion 3 is securely fixed in the concrete after casting. As a result, the suspension strength of the suspension bolt 7 is reliably improved, and the suspension bolt 7 itself can be used only as an insert. Further, the four reinforcement recesses formed in the support portion 6 can be used. Notches 61, 61,
..., The opposing members are set at the same height, and the adjacent pair is set one step lower, and any one pair of the recessed portions 61, 61 is selected. If it is used, it can be used as a spacer at a single streak portion, and, of course, the slab streaks 9, 9 arranged in a lattice pattern and in a cross shape can also be used as a spacer for securely holding both of them. In addition to the advantages, in the one shown in the second embodiment, in addition to those features, the reinforcing ribs 42, 42,... , 9,... Can be expected to have an effect of realizing a sturdy spacer that can sufficiently withstand the careless horizontal movement of.

Further, in the insert / spacer 1 having the structure represented by the third embodiment, instead of forming the laterally projecting receiving support 6 at the upper end of the support 3, the support 3 is used.
And an upright portion 5 protruding from the upper surface of the seat panel portion 4 like the support portion 3, and a reinforcing bar receiving recess 6 is formed at the upper end thereof.
1, 61, 61, 61 are formed, so that the whole can be stamped and manufactured with a casting, a strong plastic, or the like. Further, the spacer body 2 and the support body 5 shown in Examples 4 and 5 can be obtained. Also, in the case of the insert / spacer 1 having a structure obtained by dividing the above, since the die-cutting manufacturing is made possible, in addition to the above-mentioned features, in addition to the above-mentioned features, there is a feature that it can be mass-produced and provided at low cost. In addition to the insert / spacer 1 of Examples 4 and 5.
In this case, only the bearing member 5 at the portion where the female screw portion 32 is required to be particularly strong is made of metal, and the spacer body 2 which does not require that much strength is made of plastic and can be separately stamped and manufactured. This has the added advantage that it can be of high practical value.

In the structure shown in the fourth embodiment, only the spacer main body 2 is designed and manufactured so that the height of the column portion 3 is individually designed for each concrete covering thickness A, so that storability is improved. In addition to being able to reduce the bulk at the time of stock in factory production, it can be carried around in a disassembled state during installation work, so that it is not bulky, so it is suitable for carrying. In addition to improving the safety of the work, it is possible to easily carry out the installation work, which is the work in the above, and mainly, the reinforcing work is performed by installing the spacer body 2 by the same installation work as before at the time of the reinforcing work. The most important purpose of the present invention is that the installation of the insert is automatically completed as long as the support body 5 is inserted and combined with the support body 5. Simple It will exert a useful feature in that and safe working is to be guaranteed.

The insert / spacer shown in the sixth embodiment is obtained by dividing the components into three parts so as to further simplify the above-described fourth or fifth embodiment. In addition to this, it is possible to ensure that the poured concrete flows around the column portion 3 and to make it more advantageous in terms of integration with the concrete, thereby further increasing the strength as an insert. It has the unique feature that it can be stabilized.

As described above, the insert / spacer of the present invention can achieve the intended purpose by its novel structure, and can be easily manufactured. In addition, the conventional components such as the insert and the spacer can be used. Since the need for separate installations is eliminated, the unit price of the product can be extremely economical, and the work efficiency itself can be greatly improved. It is possible to achieve the reduction and shortening of the construction period reliably, and it is highly evaluated in the construction industry, which requires increasingly larger buildings, shorter construction period, and improved safety of construction work. It is expected to be used and spread.

[Brief description of the drawings]

The drawings show a typical embodiment embodying the technical concept of the insert / spacer of the present invention, and a conventional insert and spacer.

FIG. 1 is an overall perspective view of a spacer serving also as an insert.

FIG. 2 is a vertical cross-sectional view of the same insert / spacer.

FIG. 3 is a perspective view showing an installed state of the insert / spacer according to the first embodiment;

FIG. 4 is a vertical cross-sectional view showing a state of being installed in cast concrete.

FIG. 5 is a longitudinal sectional view showing a use state of the insert / spacer.

FIG. 6 is a perspective view showing an insert / spacer having a reinforcing rib.

FIG. 7 is a vertical cross-sectional view showing the same insert / spacer.

FIG. 8 is a vertical sectional view of another insert / spacer.

FIG. 9 is an exploded perspective view of an upper / lower split type insert / use spacer.

FIG. 10 is a vertical cross-sectional view of the same insert / spacer.

FIG. 11 is an exploded perspective view of another upper / lower split type spacer that also serves as an insert.

FIG. 12 is a vertical cross-sectional view of the same insert / spacer.

FIG. 13 is a perspective view of still another split type insert / use spacer.

FIG. 14 is a side view of the same insert / spacer.

FIG. 15 is a perspective view showing the structure of a conventional insert.

FIG. 16 is a longitudinal sectional view showing a use state of a conventional insert.

FIG. 17 is a perspective view showing a use state of a conventional spacer.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Insert / use spacer 2 Spacer body 3 Support part 31 Same vertical hole (vertical hole) 32 Same female screw part 4 Seat base part 41 Same temporary fixing hole 42 Same reinforcement rib 5 Bearing body 51 Same receiving head 52 Same as above Body rod part 6 Reception part 6 61 Recessed recess for steel bar support or recessed part for steel bar support 62 Same support rod part 63 Same female screw mounting hole 7 Suspension bolt 71 Same ceiling panel 8 Form panel 9 Slab streaks A Concrete covering thickness B Insert spacer spacing C Insert D Insert main body E Support frame F Insert bracket G Disk-shaped hitting surface H Suspension bolt screw J J Temporary driving nail K Same spacer

Claims (10)

[Claims] 1. A column having a predetermined height is vertically installed at the center of the upper surface of a seat panel installed at a predetermined position on a form panel, and the column is located above the center of the lower surface of the seat panel. While drilling a vertical hole or a vertical hole toward the inside, while providing a female screw for screwing a suspension bolt in the vertical hole or the vertical hole,
A spacer for use as an insert, wherein a receiving portion for supporting a slab muscle is provided at a height position corresponding to a concrete covering thickness from a lower surface of a seat panel portion. 2. A column having a predetermined height is vertically installed at the center of the upper surface of a seat panel installed at a predetermined position on a form panel, and the column is located above the center of the lower surface of the seat panel. While drilling a vertical hole or a vertical hole toward the inside, while providing a female screw for screwing a suspension bolt in the vertical hole or the vertical hole,
A spacer for use as an insert, wherein a receiving portion for supporting a slab muscle is provided at a height position corresponding to a concrete covering thickness from a lower surface of a seat panel at an upper end of a support portion. 3. A support portion having a predetermined height is vertically provided at the center of the upper surface of a seat panel installed at a predetermined position on a form panel, and the support is located above the center of the lower surface of the seat panel. While drilling a vertical hole or a vertical hole toward the inside, while providing a female screw for screwing a suspension bolt in the vertical hole or the vertical hole,
At the upper end of the support portion and / or the upper end of the rising portion which is close to and upright from the support portion and which corresponds to the concrete covering thickness from the lower surface of the seat panel portion, a support for slab reinforcement is provided. An insert / spacer comprising a support. 4. At least a seat plate portion and a support portion are integrally formed by synthetic resin molding, and a female screw portion is embedded in a predetermined position in the support portion above a center of a lower surface of the seat face portion and screwed. 4. The insert / spacer according to claim 1, wherein the spacer is formed of a metal nut integrated by hooking, insertion bonding or other appropriate means. 5. At least the seat plate portion and the strut portion are integrally formed by synthetic resin molding, and the female screw portion is formed above the center of the lower surface of the seat plate portion by embedding molding at the time of synthetic resin molding. The spacer as claimed in any one of claims 1 to 3, wherein the spacer is formed from a metal nut integrated at a predetermined position. 6. A support portion having a predetermined height is vertically provided at the center of the upper surface of a seat panel portion installed at a predetermined position on a form panel, and the support column is located above the lower center of the seat panel portion. A vertical hole portion is formed so as to penetrate the inside of the portion to form a spacer main body, and separately from the spacer main body, a lower end side can be fitted into the spacer main body vertical hole portion, and the inside thereof is formed. Is formed in a support body as a support rod part in which a female screw part for screwing a suspension bolt is bored, and the support body support rod part is fitted into the vertical hole part of the spacer main body, whereby the inside of the vertical hole part of the spacer main body is formed. Is provided with a female screw portion for screwing a suspension bolt, and a receiving portion for supporting a slab muscle is provided at a height position corresponding to the concrete covering thickness from the lower surface of the seat panel portion. An insert / spacer characterized in that: 7. A column having a predetermined height is vertically provided at the center of the upper surface of a seat panel installed at a predetermined position on a form panel, and the column is located above the center of the lower surface of the seat panel. A vertical hole is formed so as to penetrate the inside of the spacer body to form a spacer main body, and separately from the spacer main body, an upper end side is a supporting portion for supporting a slab muscle, and a lower end side is the spacer main body vertical hole portion. The support body is formed as a support body in which a female screw part for screwing a suspension bolt is bored, and the support body support part is formed in the spacer main body vertical hole part. By fitting, the female screw part for screwing the suspension bolt is arranged in the spacer main body vertical hole part, and at the upper end of the pillar part, it corresponds to the concrete covering thickness from the lower surface of the seating board part The support section for supporting the slab muscle is arranged at the height Insert and spacer. 8. A support portion having a predetermined height is vertically provided at the center of the upper surface of a seat panel portion installed at a predetermined position on a form panel, and the support column is located above the lower center of the seat panel portion. A vertical hole portion is formed so as to penetrate the inside of the portion to form a spacer main body, and separately from the spacer main body, a lower end side can be fitted into the spacer main body vertical hole portion, and the inside thereof is formed. Is formed in a support body as a support rod part in which a female screw part for screwing a suspension bolt is bored, and the support body support rod part is fitted into the vertical hole part of the spacer main body, whereby the inside of the vertical hole part of the spacer main body is formed. A female screw portion for screwing a suspension bolt, and an upper end of a support portion and / or an upper end of a rising portion which is in the vicinity of the support portion and has a standing shape. At the height position corresponding to the concrete covering thickness from the lower surface of the part, An insert and spacer which is provided. 9. The receiving portion for supporting slab muscles is formed at a receiving portion at a slab muscle crossing point arranged vertically and horizontally, or at a receiving portion at an appropriate position of the slab muscle either vertically or horizontally. 8. The insert / spacer according to any one of 8 above. 10. The insert-cum-spacer according to claim 1, wherein said female screw portion is formed by combining an opening portion thereof with a sealing lid portion which is damaged by press-fitting of a suspension bolt.