JP4344923B2 - Form fixture for concrete buried hardware and concrete buried hardware unit - Google Patents

Description

  The present invention relates to a fixture for fixing a concrete buried hardware such as a reinforcing bar receiver to a formwork plate, and a combination unit of the fixture and the concrete buried hardware.

  Conventionally, as this type of fixture, a method is known in which a bolt or the like is inserted into a fixing hole formed in the mold from the back of the mold and fixed (for example, see Patent Documents 1 to 5).

  However, the fixing work using bolts or the like from the back of the formwork is a joint work of at least two people, and there is a problem that the work is difficult.

  As a floating bracket that eliminates such problems and improves workability, a hook is provided on the bolt that is screwed to one side of the dimension-adjusting rotating buckle, and the fixing bracket that is open to the bolt that is screwed to the other side A one-way plug-in type in which an expansion-type fixing bracket is passed from the front side of the formwork through the fixing hole of the formwork, locked to the back of the formwork to prevent it from coming off, and tightened and fixed by the dimension-adjusting rotating buckle (See, for example, Patent Document 6).

  An example of a conventional form fixture for concrete embedded hardware will be described with reference to FIGS.

  A concrete embedded metal mold fixing tool 100 is screwed into a turnbuckle screw rod 103 having male screw portions 101 and 102 formed in opposite directions on both sides, and one male screw portion 102 of the turnbuckle screw rod 103. A retaining member 106 having a female thread portion and passing through a fixing hole 105 formed in the mold 104 to be engaged with the back surface of the mold, and a non-stop cone 107 slidably fitted to the turnbuckle screw rod 103. And an anchor piece 108 projecting from the peripheral surface of the turnbuckle screw rod 103. The retaining member 106 corresponds to an enlarged leg piece of a toggle bolt. When the leg piece 106a is closed and passed through the fixing hole of the mold as shown in FIG. 14, as shown in FIGS. The leg piece 106a cannot be removed after passing.

  On the other hand, a female threaded portion 111 that is screwed into the other male threaded portion 101 of the turnbuckle screw rod 103 is attached to the concrete buried hardware 110. The concrete buried hardware 110 in the illustrated example is a hardware that receives a void block used in a so-called void construction method.

  Explaining according to the construction procedure, as shown in FIGS. 13 to 15, the retaining member 106 is passed through the fixing hole 105 of the mold 104, and the turnbuckle screw rod 103 is turned around the axis as shown in FIG. By pulling 110 and the retaining member 106 together, the leg portion 110a of the concrete embedded metal 110 is brought into contact with the mold 104 and firmly fixed. At this time, the slotting cone 107 is in contact with the mold 104 by its own weight, as shown in FIG.

Next, as shown in FIG. 17, the void block 120 is placed on the concrete buried hardware 110 and bound. After placing and solidifying concrete (not shown), as shown in FIG. 18, the turnbuckle screw rod 103 protruding to the back surface of the mold 104 is twisted, and the weak point notch 103a (see FIG. 13) is used. Thread off.
JP 2002-266457 A JP 2000-160511 A Japanese Patent Laid-Open No. 10-131494 Japanese Patent Laid-Open No. 9-13667 JP-A-9-203205 JP-A-11-107423

  However, with the conventional one-way insertion type metal fitting, the work from the back side of the formwork (in the case of a slab formwork, the lower floor side) is not required for fixing, but concrete is placed. However, when removing the bolt protruding from the back of the mold after it has solidified, the bolt with the expansion-type fixing bracket is solidified in contact with the concrete inside the concrete. It is necessary to remove the portion protruding from the surface by tapping with a torque wrench or the like.

  Such a work of folding a bolt or the like protruding from the rear surface of the formwork has been generally performed, but is a work that requires a considerable amount of arm force, and is a work that involves worker fatigue.

  In addition, if the remaining part is exposed after folding the bolt, etc., the corrosion of the metal proceeds from the exposed part, so it is necessary to fill it with mortar after it is folded, reducing the work efficiency. I was invited.

  In view of the above prior art, an object of the present invention is to provide a form fixture for a concrete hardware that can reduce the work after the concrete embedded hardware is fixed in the concrete.

  In order to achieve the above-mentioned object, a concrete embedded metal mold fixture according to the present invention, as a first means, is a concrete embedded metal mold for fixing a concrete embedded metal having a fixing male screw part to the mold. It is a fixture and has a pair of communicating or bottomed screw holes in which female screws opposite to each other are formed on both sides, and one screw hole can screw the male screw portion of the concrete-embedded hardware. A turnbuckle body, which is a screw hole, and has a mold contact surface for fixing the slot around the screw hole on the other side, and a male screw part opposite to the male screw part of the concrete-embedded hardware on one end side A turnbuckle bolt that is screwed into the screw hole on the other side of the turnbuckle body, and is provided on the other end side of the turnbuckle bolt, and is passed through a fixing hole formed in the mold, and the back of the mold Retaining member to be locked to , Characterized by having a.

  Moreover, in order to achieve the said objective, the mold fixing tool for concrete embedments according to the present invention is used as a second means for a concrete embedment for fixing a concrete embedment having a fixing male screw part to a formwork. A mold fixing tool having a pair of communicating or bottomed screw holes formed with female screws opposite to each other on both sides, and the screw holes on one side screw the male screw parts of the concrete-embedded hardware. A turnbuckle body that is formed into a screw hole that can be inserted into the mold fixing hole and surrounds the screw hole around the other screw hole; A turnbuckle bolt having a male screw portion opposite to the male screw portion on one end side and screwed into a screw hole on the other side of the turnbuckle barrel, and provided on the other end side of the turnbuckle bolt. Fixed on the formwork And having a retaining member engaged in a mold back surface, the through.

  Moreover, in order to achieve the said objective, the form-fixing tool for concrete embedment according to the present invention is a third means for concrete embedment for fixing a concrete embedment having a fixing male screw part to a formwork as a third means. It is a mold fixture, and has a pair of communicating or bottomed screw holes formed with female screws opposite to each other on both sides, and the screw holes on one side screw the male screw parts of the concrete-embedded hardware. A turnbuckle cylinder that is a screw hole that can be combined, and a male screw part that is opposite to the male screw part of the concrete-embedded hardware is provided on one end side, and is screwed into a screw hole on the other side of the turnbuckle cylinder. Turnbuckle bolts, a retaining member provided on the other end of the turnbuckle bolts, which is secured to the back of the mold through a fixing hole formed in the mold, and slidable on the turnbuckle cylinder Noro fit And having an annular member of use, the.

  In the third means, as a fourth means, it is preferable that an elastic body for elastically urging the annular member toward the retaining member is provided on an outer peripheral portion of the turnbuckle body.

In the third or fourth means, as fifth means, an inward flange formed on the inner peripheral surface of the annular member and an inward flange formed on the outer peripheral surface of the turnbuckle cylinder are engaged. Preferably, it further has a possible outward flange.
In any one of the first to fifth means, as a sixth means, the turnbuckle cylinder is formed of a corrosion-resistant material or a rust-proof metal material, and is formed on the turnbuckle cylinder. It is preferable that the screw hole is bottomed. In the present specification, the term “corrosion resistant material” means a material having resistance to a phenomenon that is altered and destroyed by a pure chemical reaction or an electrochemical reaction. In addition to hard plastics, ceramics, stainless steel, etc. Including stainless steel and other corrosion resistant alloys.

  In any one of the first to sixth means, as a seventh means, a fin or rib extending in the axial direction is preferably formed on the outer peripheral surface of the turnbuckle barrel.

  Moreover, the said objective of this invention is achieved by the concrete embedment hardware unit characterized by having the mold fixing tool in any one of the said 1st-7th means, and a concrete embedment.

  According to the present invention, the turnbuckle cylinder prevents the entry of the slot into the fixing hole formed in the mold frame by the mold frame contact surface, the cylindrical part, or the annular member provided on the turn buckle cylinder. Since the screw hole of the buckle body is in communication or has a bottom, the turnbuckle bolt does not come into contact with the concrete. After solidifying the concrete, just remove the turnbuckle bolt protruding from the back of the formwork and remove it together with the retaining member. The screwing operation can be easily performed using an electric tool such as an electric screwdriver, so that workability is improved.

  In addition, the turban buckle cylinder is made of a corrosion-resistant material or a rust-proof metal material, and the female screw holes formed on both sides of the turn buckle cylinder are made into bottomed screw holes, so that After unscrewing the protruding turnbuckle bolt, only the turnbuckle body of corrosion-resistant material or rust-proof metal material is exposed, and there is no possibility of corrosion like iron that has not been rust-proofed. The conventional mortar filling work becomes unnecessary and the workability is improved.

  A first embodiment of a form fixture for a concrete embedded hardware according to the present invention will be described with reference to FIGS. 1 to 4 sequentially show the procedure for fixing the form-fixing tool for concrete embedded hardware according to the first embodiment to the form, and FIGS. 5 and 6 show enlarged components. In addition, the same code | symbol was attached | subjected to the same component through all embodiment and all the figures.

  The concrete embedded fixture 1 includes a turnbuckle body 2 having a pair of screw holes 2a and 2b opposite to each other, a turnbuckle bolt 3 screwed into the screw hole 2b of the turnbuckle body 2, and a turnbuckle bolt. 3 and a retaining member 4 attached to 3.

  A male screw portion 5 of a concrete embedded hardware is screwed into the screw hole 2a of the turnbuckle body 2, and the concrete embedded hardware of the first embodiment is exemplified by a void block receiving metal. The void block receiving metal 6 is a metal that supports the void block B (see FIG. 4) in the so-called hollow slab method. In the illustrated example of the void block receiver 6, the receiving portion 6 a, the leg portion 6 b, and the connecting portion 6 c formed with the male screw portion 5 are welded together.

  The turnbuckle cylinder 2 is formed of a corrosion-resistant plastic material such as hard vinyl chloride, but can also be formed of a corrosion-resistant metal material such as stainless steel. As shown well in FIG. 5, the turnbuckle body 2 has a substantially cylindrical shape, and screw holes 2a and 2b formed in opposite directions at both ends thereof are bottomed holes. The parts where the male screw part 5 and the turnbuckle bolt 3 are screwed into the holes 2a and 2b are not exposed to the outside. In order to prevent the screwed portion of the turnbuckle bolt 3 that has been screwed in from being exposed, the screw holes 2a and 2b may be in communication, but after the turnbuckle bolt 3 is removed, Since the screw portion 5 is exposed, it is necessary to fill the screw hole 2b with concrete or the like in order to prevent rust.

  The retaining member 4 is inserted into the fixing hole 7a of the mold 7 and penetrates the retaining member 4 so as to prevent the turnbuckle bolt 3 from being pulled out. It is a member.

  As shown in FIG. 6, the retaining member 4 according to the first embodiment is arranged circumferentially on a cylindrical base portion 4 a through which the turnbuckle bolt 3 is inserted, extending obliquely radially from the cylindrical base portion 4 a as a base end. The expanded piece 4b has a free end facing the turnbuckle body 2 that is elastically expanded in the radial direction due to its retained elasticity. When passing through the fixing hole 7a, the expanding piece 4b is elastically contracted as shown by a one-dot chain line in FIG. 6B, and after passing through the fixing hole 7a, the expanding piece 4b is expanded again by its retained elasticity to prevent it from coming off. Make. The retaining member 4 can be formed of a hard plastic material or a metal material.

  In order to expand the expanded piece 4b after passing through the fixing hole 7a, as shown in FIG. 2, a gap X is generated between the tip of the expanded piece 4b and the mold frame 7 after passing through the fixed hole 7a. It is necessary that such adjustment is made before the retaining member 4 is inserted into the fixing hole 7a.

  Also, as shown in FIG. 3, the turnbuckle barrel 2 is pulled away from the mold 7 so that the turnbuckle bolt 3 does not rotate when the turnbuckle barrel 2 is tightened, and the tip of the spread piece 4b is pulled. The turnbuckle cylinder 2 is turned in a state where the frame is brought into contact with the wooden form 7 and the anti-rotation action is caused by the frictional resistance. Although not shown, a protrusion that bites into the mold 7 is formed at the tip of the spread piece 4b, so that the rotation preventing function can be enhanced. When the turnbuckle body 2 is turned and the turnbuckle bolt 3 and the male screw part 5 are drawn together, the mold frame 7 is sandwiched between the leg part 6b and the expanding piece 4b and tightened. The mold 7 is firmly fixed.

  The retaining member 4 is attached to the turnbuckle bolt 3 so that the retaining member 4 does not rotate independently of the turnbuckle bolt 3. In the illustrated example, a female screw 4c is formed in a cylindrical base 4a, a turnbuckle bolt 3 is screwed into the female screw, and a hexagonal head 3a of the turnbuckle bolt 3 is pressed and fixed to the cylindrical base 4a. In addition, known fixing means such as fixing with an adhesive may be employed.

  Around the screw hole 2b on the other side of the turnbuckle body 2, a slotted cylindrical portion 8 is provided in the axial direction of the screw hole 2b so as to surround the screw hole 2b and fit into the fixing hole 7a. Since the mold 7 is often reused repeatedly, and the diameter dimension of the fixing hole 7a is almost determined, the outer diameter of the cylindrical portion 8 is made substantially equal to or slightly smaller than the inner diameter of the fixing hole 7a. Thus, if the tubular portion 8 is fitted into the fixing hole 7a, the tubular portion 8 serves as a stopper when the concrete is placed.

  Fins or ribs 2 c extending in the axial direction are formed on the outer peripheral surface of the turnbuckle body 2. These fins or ribs 2c are buried in the concrete, thereby preventing the turnbuckle body 2 from rotating and facilitating the rotation work at the time of attachment.

  In the mold fixing tool 1 for a concrete embedded hardware according to the first embodiment, the expansion piece 4 is expanded into the mold 7 by passing the retaining member 4 through the fixing hole 7a of the mold 7 and expanding the expansion piece 4b. The expansion piece 4 serves to prevent the turnbuckle bolt 3 from coming off. Then, the turnbuckle body 2 can be fixed to the mold 7 by turning the turnbuckle body 2 while pulling the turnbuckle body 2 to prevent rotation by the expanding piece 4b.

  When the concrete-embedded mold fixing tool 1 is attached to the mold 7, the cylindrical portion 8 blocks the fixing hole 7a, so that when the concrete is placed, the concrete slot is prevented from leaking from the fixing hole 7a. Can do.

  After the concrete is solidified, the turnbuckle bolt 3 is unscrewed from the screw hole 2b, and the mold 7 is removed from the slab. The turnbuckle bolt 3 can be easily screwed using an electric drill by setting the bolt head as a normal hexagon head.

  After the turnbuckle bolt 3 is screwed off, the turnbuckle barrel 2 is not removed and embedded in the concrete slab, but the turnbuckle barrel 2 is made of a plastic material and has a screw hole 2b with a bottom. Therefore, since the void slab receiving metal 6 constituting the concrete embedded metal is covered with the concrete and the turnbuckle cylinder 2 and does not come into contact with external moisture, corrosion is prevented.

  Next, a second embodiment of the form fixture for a concrete buried hardware according to the present invention will be described below with reference to FIG.

  The second embodiment is an example in which the concrete embedded hardware is a reinforcing bar floating hook. The reinforcing bar floating hook 10 has a hook 10a formed at one end and a male screw portion 5 formed at the other end.

  A concrete embedded metal form fixture 1 includes a turnbuckle body 2, a turnbuckle bolt 3 screwed to the turnbuckle body 2, and a retaining member 4 formed on the turnbuckle bolt 3. The turnbuckle cylinder 2 is the same as that in the first embodiment.

  In the second embodiment, the retaining member 4 is formed by bending the rear part of the turnbuckle bolt 3 into an L shape. The retaining member 4 having such a configuration can be retained only by being hooked through the fixing hole 7 a of the mold 7.

  When setting, first, the retaining member 4 is passed through the fixing hole 7a of the mold 7, and the hook 10a is hooked on the reinforcing bar 11, and then the turnbuckle body 2 is turned and tightened. When the turnbuckle barrel 2 is turned, the turnbuckle barrel 2 is separated from the mold 7, but the degree of screwing of the turnbuckle bolt 3 and the male screw portion 5 is set in advance so that the cylindrical portion 8 does not come out of the fixing hole 7 a. It is necessary to make preliminary adjustments.

  Next, a third embodiment of a concrete fixture for a concrete embedding hardware according to the present invention will be described with reference to a construction procedure shown in FIG.

  As will be described later, the concrete fixture 1 for the third embodiment of the present invention is different from the first and second embodiments in the structural member for locking, and the retaining member is the same as in the first embodiment. The concrete embedded hardware is the same as that of the second embodiment.

  The form fixture 1 for concrete embedded hardware includes an annular member 12 that is slidably fitted to the turnbuckle body 2 and an elastic body 13 that elastically biases the annular member 12 toward the retaining member 4 side. And having.

  The annular member 12 is formed of a corrosion-resistant material such as a plastic material like the turnbuckle cylinder 2, has a through-hole that can be slidably fitted to the turnbuckle cylinder 2, and at least the retaining member 4. The flat surface which can contact | abut to the formwork 7 is provided.

  In the illustrated example, the elastic body 13 employs a coil spring and is supported by a bowl-shaped seat portion 14 formed integrally with the turnbuckle body 2. The elastic body 13 is not limited to a coil spring, and various elastic bodies such as a sponge rubber and a leaf spring can be used. Also, the support to the turnbuckle cylinder 2 is not dependent on the seat, and the holes are formed in the turnbuckle cylinder 2. A well-known support means such as insertion of can be adopted.

  In the mold fixing tool for concrete embedded hardware according to the third embodiment, when the retaining member 4 is inserted into the fixing hole 7a of the mold 7, the coil spring that constitutes the elastic body 13 presses the annular member 12, and therefore by the reaction. The turnbuckle cylinder 2 and the reinforcing bar floating hook 10 as a concrete embedment screwed to the turnbuckle cylinder 2 are urged toward the side away from the mold 7.

  Accordingly, the expansion piece 4b of the retaining member 4 comes into contact with the back surface of the mold 7 by the action of the elastic body 13, so that the expansion piece 4b contacts the mold 7 as in the case of the first embodiment. For this reason, it is not necessary to pull the reinforcing bar floating hook 10 constituting the concrete embedded hardware toward the side away from the mold 7, or the pulling force can be reduced.

  That is, after the retaining member 4 is passed through the fixing hole 7 a of the mold 7 and the expanded piece 4 b is expanded, the expanded piece 4 b comes into contact with the mold 7 by the urging force of the elastic body 13. Since the expanding piece 4b abuts on the mold 7, even if the expanding piece 4 b is frictionally engaged with the wooden mold 7 and the turnbuckle body 2 is rotated, the turnbuckle bolt 3 fixed to the retaining member 4 is secured. Does not rotate relative to the formwork 7.

  Further, the annular member 12 can be brought into contact with the mold 7 by the elastic body 13 and can completely block the fixing hole 7a of the mold 7. Therefore, the concrete slot does not enter the fixing hole 7a when the concrete is placed. Further, since the annular member 12 is urged toward the mold 7 by the elastic body 13, it is not necessary to perform preliminary adjustment so that the cylindrical portion 8 does not come out of the fixing hole 7a as in the second embodiment.

  Next, a fourth embodiment of a form fixture for a concrete embedded hardware according to the present invention will be described below with reference to FIG.

  4th Embodiment has shown the example whose concrete embedment metal fitting is a slit material support metal fitting. The slit material support hardware 20 is a metal fitting for supporting the slit material S such as a panel board used for forming a gap between the slabs C and C. In the illustrated example, the slit material supporting metal 20 has a U-shaped metal fitting 20b welded to a turnbuckle rod portion 20a of a reverse screw in which a male screw portion 5 is formed.

  The turnbuckle cylinder 2 of the fourth embodiment has a mold contact surface 2 d of the turnbuckle cylinder 2. The mold contact surface 2d is a flat surface formed around the screw hole 2b, and is formed by a surface substantially orthogonal to the axis of the screw hole 2b. Unlike the first to third embodiments, the concrete-embedded metal form fixture 1 of the fourth embodiment is fastened and fixed by sandwiching the mold 7 with the turnbuckle body 2 and the retaining member 4.

  Therefore, in the fourth embodiment, the mold contact surface 2d of the turnbuckle cylinder 2 can be pressed against the mold 7 and the periphery of the fixing hole 7a of the mold 7 can be sealed, so that the concrete no It does not enter the fixing hole 7a.

  Next, a fifth embodiment of a concrete fixture for a buried concrete object according to the present invention will be described with reference to FIG.

  The concrete-embedded hardware of the fifth embodiment is a handrail anchor fixing hardware 31 for fixing the anchor 30a of the handrail strut 30. The handrail anchor fixing hardware 31 includes an inverted U-shaped portion 31a and a leg portion 31b in which male screw portions 5 are formed at both ends.

  The retaining member 4 of the fifth embodiment is a so-called flip anchor. That is, the claw 4 e is rotatably supported at the tip of the turnbuckle bolt 3. When the claw 4 e passes through the fixing hole 7 a of the mold 7, it fits into the groove 3 a of the turnbuckle bolt 3, so that it is within the axial width of the turnbuckle bolt 3, but if it passes through the fixing hole 7 a, it rotates. Thus, it can protrude from the shaft width and be locked to the back surface of the mold 7, thereby preventing it from coming off.

  Next, a description will be given of a sixth embodiment of the concrete fixture for a buried concrete according to the present invention with reference to FIGS. 11 and 12.

  The sixth embodiment is different from the first embodiment in the slot stop portion, and the other configurations are the same as those in the first embodiment.

  An annular member 12 ′ that is slidably fitted to the turnbuckle cylinder 2 serves to stop. The annular member 12 ′ has a frustoconical appearance in the illustrated example, and has an inward flange 12 b on the inner peripheral surface of the through hole 12 a in which the turnbuckle body 2 is fitted. On the other hand, an outward flange 2e with which the inward flange 12b can be engaged is formed on the outer peripheral surface of the turnbuckle body 2. Since the inward flange 12a is engaged with the outward flange 2e, the annular member 12 'does not fall off the turnbuckle barrel 2.

  In the above-described sixth embodiment, the mold fixing tool 1 for a concrete-embedded hardware is passed through the fixing hole 7a of the mold 7 until the expansion piece 4b expands (FIG. 11 (A) → (B). ), By turning up the turnbuckle body 2 and engaging the expanded piece 4b with the back surface of the wooden mold 7 while rotating it in the direction of the arrow in FIG. 12 (a), the void block bracket 6 and the turnbuckle bolt 3 And the void block receiver 6 is firmly fixed to the mold 7. Thereafter, the void block B is supported on the void block receiving metal 6 and fixed with a wire (FIG. 12 (b)), and concrete is placed. The annular member 12 ′ slides along the outer peripheral surface of the turnbuckle cylinder 2 and is in contact with the mold 7, and the annular member 12 ′ fills the gap between the turnbuckle cylinder 2 and the mold 7. Is prevented from entering the fixing hole 7a of the mold 7.

In addition, in the form-fixing tool for concrete embedded hardware according to the present invention including the first to fifth embodiments, the turnbuckle bolt 3 screwed off from the turnbuckle body 2 after the concrete is solidified can be reused.
Moreover, the form fixture for concrete buried hardware according to the present invention is not limited to the above-mentioned concrete buried hardware, but a reinforcing bar receiving metal, a power box fixing hardware, or a through hole for providing a handrail-embedded through pipe or slab opening. It can be used to fix various concrete-embedded hardware such as a through-tube member fixing hardware for fixing a through-tube member such as a pipe.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially longitudinal front view showing a first embodiment of a form fixture for a concrete embedded hardware according to the present invention, together with a void slab bracket that constitutes the concrete embedded hardware. It is a partial longitudinal cross-sectional front view which shows the state which inserted the mold fixing tool for concrete embedments of FIG. 1 in the mold. It is a partial longitudinal cross-sectional front view which shows the state which is turning the turnbuckle cylinder of the form fixing tool for concrete embedments of FIG. FIG. 2 is a partial longitudinal sectional front view showing a state in which a void block receiving metal fixture is fixed by a form fixture for a concrete embedded hardware in FIG. 1 and a void block is fastened. FIG. 5 (a) is a plan view, FIG. 5 (b) is a front view, FIG. 5 (c) is a bottom view, and FIG. (D) is a center longitudinal cross-sectional view. FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a bottom view. FIG. It is a partial vertical front view which shows the state which mounted | wore the formwork with 2nd Embodiment of the reinforcing bar floating hook with 2nd Embodiment of the form fixing tool for concrete embedments concerning the present invention. It is a fragmentary longitudinal cross-sectional view which shows 3rd Embodiment of the form fixing tool for concrete embedments concerning the present invention along a construction procedure. It is a fragmentary longitudinal cross-section which shows the state which mounted | wore the mold form with 4th Embodiment of the mold fixing tool for concrete embedding hardware concerning this invention with the slit material support metal fitting. It is a partial vertical front view which shows the state which mounted | wore the mold form with 5th Embodiment of the mold fixing tool for concrete embedding hardware which concerns on this invention with the handrail anchor fixing metal. It is a partial vertical front view which shows 6th Embodiment of the form fixing tool for concrete embedments concerning the present invention in order according to a construction procedure with a void slab catch metal which constitutes a concrete embedment. It is a partial longitudinal front view shown in order of the construction procedure following FIG. It is a partial longitudinal cross-sectional front view which shows the conventional frame fixing tool for concrete embedments together with a concrete embedment according to a construction procedure. It is a partial longitudinal front view following the construction procedure of FIG. It is a partial longitudinal front view following the construction procedure of FIG. It is a partial longitudinal front view following the construction procedure of FIG. FIG. 17 is a partial longitudinal sectional front view following the construction procedure of FIG. 16. FIG. 18 is a partially longitudinal front view following the construction procedure of FIG. 17.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Form-fixing tool for concrete embedment 2 Turnbuckle body 3 Turnbuckle bolt 4 Retaining member 5 Male screw part 6 Void block receiving object 7 Moldwork 8 Cylindrical part 10 Rebar floating hook 12, 12 'Annular member 13 Elasticity Body 14 Seat 20 Slit material support hardware 31 Handrail anchor fixing hardware

Claims (9)

A concrete-embedded mold fixing tool for fixing a concrete-embedded hardware having a male screw portion for fixing to a mold,
It has a pair of communicating or bottomed screw holes in which female screws opposite to each other are formed on both sides, and one screw hole is a screw hole that can screw the male screw part of the concrete-embedded hardware, A turnbuckle barrel in which a form contact surface for fixing the slot is formed around the screw hole on the side;
A turnbuckle bolt that has a male screw portion opposite to the male screw portion of the concrete embedded hardware on one end side and is screwed into the screw hole on the other side of the turnbuckle barrel;
A mold fixing tool for concrete embedded hardware, comprising: a retaining member provided on the other end side of the turnbuckle bolt, and having a retaining member that passes through a fixing hole formed in the mold and is locked to the back surface of the mold . A concrete-embedded mold fixing tool for fixing a concrete-embedded hardware having a male screw portion for fixing to a mold,
It has a pair of communicating or bottomed screw holes in which female screws opposite to each other are formed on both sides, and one screw hole is a screw hole that can be screwed with the male screw portion of the concrete-embedded hardware, A turnbuckle body that is provided with a cylindrical portion for fixing a screw that surrounds the screw hole around the side screw hole and can be fitted into the mold fixing hole;
A turnbuckle bolt that has a male screw portion opposite to the male screw portion of the concrete embedded hardware on one end side and is screwed into the screw hole on the other side of the turnbuckle barrel;
A retaining member provided on the other end side of the turnbuckle bolt, which is passed through a fixing hole formed in the mold and locked to the back of the mold,
A mold fixing tool for concrete embedded hardware characterized by comprising: A concrete-embedded mold fixing tool for fixing a concrete-embedded hardware having a male screw portion for fixing to a mold,
There are a pair of communicating or bottomed screw holes in which female screws opposite to each other are formed on both sides, and the screw holes on one side are screw holes that can be screwed with the male screw portions of the concrete-embedded hardware. The turnbuckle body,
A turnbuckle bolt having a male screw portion opposite to the male screw portion of the concrete-embedded hardware on one end side, and screwed into a screw hole on the other side of the turnbuckle barrel;
A retaining member provided on the other end side of the turnbuckle bolt, which is passed through a fixing hole formed in the mold and locked to the back of the mold,
A mold fixing tool for concrete embedded hardware, comprising: an annular member for slidably fitting externally to the turnbuckle body. 4. A formwork fixing tool for concrete embedded hardware according to claim 3, wherein an elastic body for elastically urging the annular member toward the retaining member is provided on an outer peripheral portion of the turnbuckle body. An inward flange formed on an inner peripheral surface of the annular member, and an outward flange formed on an outer peripheral surface of the turnbuckle barrel and engageable with the inward flange. Item 5. A mold fixture for a concrete embedded hardware according to Item 3 or 4. 2. The turnbuckle cylinder is formed of a corrosion-resistant material or a rust-proof metal material, and the screw hole formed in the turnbuckle cylinder is bottomed. The mold fixing tool for concrete embedment in any one of -5. The form fixing tool for concrete embedded hardware according to any one of claims 1 to 6, wherein fins or ribs extending in the axial direction are formed on an outer peripheral surface of the turnbuckle body. A concrete embedded hardware unit comprising the mold fixture according to any one of claims 1 to 7 and a concrete embedded hardware. 9. The concrete according to claim 8, wherein the concrete-embedded hardware is a reinforcing bar floating hook, a reinforcing bar receiving hardware, a slit material supporting hardware, a power box fixing hardware, a handrail anchor fixing hardware, or a void block receiving hardware. Embedded hardware unit.

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