JP2009263878A - Separator for maintaining spacing between forms, form tie, and structure for maintaining spacing between forms - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separator, a form tie, and a structure for maintaining a spacing between forms, which support a heat insulating panel with an arbitrary thickness, which prevent the compressive strain and lift of the form tie, and which facilitate dismantlement. <P>SOLUTION: The separator (1) is equipped with a shaft portion (1a) and a heat insulating pad which abuts on the inner surface of the heat insulating panel. Both ends of the separator (1) are connected to the pair of form ties (9) through separator holes (31c and 32a), respectively. The separator (1) comprises: a male screw portion (1a1) which is provided at the one end of the shaft portion; flat plate-like members (4 and 7a) which are fixed to the male screw portion; an outside nut (5B) which is screwed to the male screw portion; a tubular spacer (8) which allows the insertion of the male screw portion; and a high nut (3) which is screwed to the male screw portion and further elongated outward so as to be capable of being connected to the form tie. The length (RL) of a sleeve pipe portion (1f), which is formed of the outside nut, the spacer and the high nut, arranged in line, can be adjusted by the length (JL) of the spacer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a separator and a foam tie that are used to maintain a distance between a pair of molds, at least one of which is a heat-insulating panel that is also used as a mold, and a mold frame spacing holding structure provided with these.

  As a formwork used for building a reinforced concrete wall of a building, in addition to a general form using plywood for both of a pair of formwork boards, a heat insulation function is added in place of one formwork board and combined with formwork heat insulation. What used the panel is used. The plywood formwork plate is removed after the concrete is solidified, but the heat insulating panel for formwork is left as it is, and functions as a heat insulating layer integrated with the concrete wall. There are various types of heat insulating panels for formwork (hereinafter sometimes referred to simply as “heat insulating panels”). When using foamed plastic insulation as a formwork as is, In general, a heat insulating composite panel in which various reinforcing materials are bonded or combined is used.

  Patent Documents 1 and 2 and the like are known as conventional techniques for a separator used as an interval holder for a mold using a heat insulating panel also serving as a mold. In Patent Document 1, a cylindrical joint having female screws at both ends is attached to a male screw at one end of a separator, and the cylindrical joint is inserted into a separator hole drilled in a heat insulating panel. A foam tie is attached. The cylindrical joint is longer than the thickness of the heat insulating panel and protrudes from the inner surface of the heat insulating panel.

The prior art (1) of FIG. 1 is a longitudinal sectional view showing a form spacing holding structure by a general separator and a foam tie described in Patent Document 1 and Patent Document 2 as the prior art.
An example of a construction method will be described with reference to the prior art (1) in FIG. A heat insulating panel 31 in which a heat insulating material 31a and a reinforcing material 31b are bonded together is used as one mold plate, and a mold plywood 32 is used as the other mold plate. In the separator 10, a substantially disk-shaped heat insulating pad 10 c is screwed into a male screw portion at one end of the shaft portion 10 a in advance, and a shaft foot (male screw portions at both ends of the round bar is connected to a female screw at the other end of the heat insulating pad 10 c. 10b), and a frustum-shaped plastic cone (hereinafter referred to as “P-con”) 10d is screwed into the male threaded portion at the other end of the shaft portion 10a. A male screw portion 10d1 protrudes from the other end of the P-con 10d.

  First, after the heat insulation panel 31 is installed and temporarily fixed in accordance with the marking position, the shaft foot 10b of the separator 10 assembled as described above is inserted into the separator hole 31c drilled at a predetermined position of the heat insulation panel 31. The heat insulating panel 31 is penetrated from the inner surface side. A female screw portion 24 at one end of the foam tie 20 with a washer 23 is screwed to and fixed to the shaft foot 10b protruding from the outer surface side of the heat insulating panel 31. A flange portion 25 e provided at one end of the foam tie 20 contacts the outer surface of the heat insulating panel 31. Thereafter, the vertical butterfly member 33 and the horizontal butterfly member 34 are attached to the outer surface side of the heat insulating panel 31, and fixed with the tightening nut 22 with the washer 23 of the foam tie 20. The heat insulating pad 10c and the flange portion 25e that are in contact with both surfaces of the heat insulating panel 31 reduce the local deformation of the heat insulating panel due to the axial force by expanding the contact area.

  On the other hand, a mold plate 32, which is a common mold plywood, is installed on the P-con 10d side of the separator 10 as a return mold. A separator hole 32a is formed in the mold plate 32 in accordance with the position of the P-con 10d. A P-conc male threaded portion 10d1 having a length of about 25 mm is passed through the separator hole 32a. In the same manner as described above, another foam tie 20 is attached to the male threaded portion 10d1 of P-cone protruding from the outer surface side of the mold plate 32, and the butter material is fixed. The P-con and the flange portion 25e of the foam tie 20 respectively contacting both surfaces of the mold plate 32 reduce the local deformation of the mold plate 32 due to the axial force by expanding the contact area.

  It should be noted that whether the heat insulation panel 31 or the formwork plate 32 is built depends on the priority of construction accuracy and the situation at the site, and contrary to the above, the heat insulation panel 31 may be built later, but the construction order The structure of a series of separators and foam ties is the same only by changing.

Next, after confirming the accuracy of the formwork installation and the tightening state, concrete is placed in the space between the formwork, and the concrete wall is constructed. Thereafter, after a predetermined curing period, the formwork is disassembled. Regarding the heat insulating panel 31, after the foam tie 20 is loosened and the butter materials 33 and 34 are removed, the foam tie 20 is removed again, and then the shaft foot is removed. 10b is extracted. Since the separator hole 31c after the shaft foot 10b is extracted becomes a heat insulation defect, it is thermally insulated by filling with urethane foam or the like. In the case of a heat insulating composite panel, the reinforcing material 31b is repaired with a putty material or the like as necessary. On the other hand, for the mold plate 32, after removing the butter materials 33 and 34 and the foam tie 20, the mold plate 32 is also peeled off from the concrete wall. Subsequently, the P-con 10d partially embedded in the concrete is also removed, and the holes after the removal of the P-container are repaired by filling them with mortar or a special cap as necessary.
Japanese Patent No. 3078766 (FIGS. 9 and 11) Japanese Patent No. 3526562

  In the form spacing holding structure shown in the prior art (1) in FIG. 1, the length of the shaft foot 10b is adjusted according to the thickness of the heat insulating panel 31, but the commercially available shaft foot is 5 mm. Sold only in unit length. On the other hand, the thickness of the heat insulation panel 31 is often manufactured and sold in units of 1 mm in accordance with the heat insulation performance desired by the user, and sometimes the thickness of the heat insulation panel does not match the length of the shaft foot.

  And when the thickness of a heat insulation panel and the length of a shaft foot do not match, there is only a method of using the shaft foot of the length near the thickness of the heat insulation panel to be used. For example, when using a heat insulating panel having a thickness of 53 mm, a shaft foot for a heat insulating panel 50 mm (a shaft foot that is too short) or a shaft foot for a heat insulating panel 55 mm (a shaft foot that is too long) must be used.

  FIG. 2 is a longitudinal cross-sectional view showing a problem when the shaft foot 10b that is too short for the heat insulating panel 31 is used. As shown in FIG. 2, the thickness of 3 mm can be tightened excessively. Therefore, if the force when tightening the foam tie 20 is mistaken, the foam tie 20 may sink into the heat insulating panel 31 or the heat insulating panel 31 may be damaged. There is a risk (see symbol X1).

  FIG. 3 is a longitudinal sectional view showing a problem when the shaft foot 10b that is too long for the heat insulating panel 31 is used. As shown in FIG. 3, even if it is tightened up to the full length of the shaft, it is 2 mm away, which may affect the accuracy of the formwork (see reference numeral X2).

  As a means for preventing the foam tie 20 from entering the heat insulating panel 31 shown in FIG. 2, the prior art (2) shown in FIG. 1 is effective. Referring to prior art (2) in FIG. 1, a sheath tube 11c1 extending outward from the center of the disk surface of the heat insulating pad 11c is provided and inserted into the separator hole 31c. If the length of the sheath tube 11c1 coincides with the thickness of the heat insulation panel 31, the sheath tube 11c1 bears the compressive force when the foam tie 20 is tightened, so that the heat insulation panel 31 can be prevented from being damaged. However, since the commercially available heat insulating pad 11c with a sheath tube is poor in the kind of the length of the sheath tube portion, it is difficult to prepare the heat insulating pad 11c with a sheath tube corresponding to the heat insulating panel 31 having an arbitrary thickness.

  Further, the sheath pipe 11c1 of the heat insulation pad 11c with a sheath pipe can prevent the heat insulation panel 31 from being crushed, but cannot bear the tensile force. Therefore, as with the normal heat insulation pad 10c, the shaft pipe 11c1 is used to secure the formwork strength. 10b must be used in combination. In addition, when the shaft foot 10b is too long as compared with the heat insulating panel 31, the problem that the space between the foam tie and the heat insulating panel is emptied as shown in FIG. 3 cannot be solved.

  Further, in the dismantling work on the heat insulation panel 31 side of the prior art, in many cases, after the foam tie 20 is first removed, the remaining shaft foot 10b must be removed again. Depending on the threaded state of the foam tie 20 and the shaft foot 10b, when the foam tie 20 is unscrewed, the shaft foot 10b may come off together, but this is not certain. Therefore, the worker must perform the work of pulling out the foam tie and the shaft foot toward the wall in a poor scaffold. If the foam tie and the shaft foot can be reliably pulled out together, then they can be collected and slowly disassembled in a safe workplace.

In view of the problems of the prior art as described above, the first object of the present invention is to provide an arbitrary thickness without using a conventional shaft foot that cannot be adjusted in length according to the heat insulation panel thickness of 1 mm unit. It is possible to connect the separator and the foam tie so as to appropriately support the heat insulation panel.
A second object of the present invention is a sheath that can be used for both the function of a conventional shaft foot that bears a tensile force and the function of a conventional sheath tube that prevents the foam tie from being sunk into a heat insulating panel, and is easy to adjust the length. It is to realize a heat insulating pad comprising a tube.
A third object of the present invention is to provide a configuration in which the operation of extracting the sheath tube can be performed simultaneously with the operation of removing the foam tie, and can be performed without extra effort.

The configuration of the present invention that achieves the above object is as follows. The numbers in parentheses are reference numerals in the drawings described later, and are given for reference.
The first aspect of the separator according to the present invention (with a spacer) is used for maintaining a distance between a pair of molds, at least one of which is a mold-frame heat insulating panel (31), and includes a rod-shaped shaft portion (1a), A heat insulating pad that abuts against the inner surface of the mold / heat insulation panel at one end of the part, and both ends of the pair of molds through separator holes (31c, 32a) formed in the pair of molds. In the separator (1) connected to each of the pair of foam ties (9) located on each outer surface,
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
(F) The length (RL) of the sheath tube portion (1f) formed by the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8).

The separator according to the second aspect (no spacer) of the present invention is used for maintaining a distance between a pair of molds, at least one of which is a mold-combination heat insulation panel (31), and includes a rod-shaped shaft portion (1a), A heat insulating pad that abuts against the inner surface of the mold / heat insulation panel at one end of the part, and both ends of the pair of molds through separator holes (31c, 32a) formed in the pair of molds. In the separator (1) connected to each of the pair of foam ties (9) located on each outer surface,
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
(E) A sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c).

A first aspect of the foam tie according to the present invention (with a tightening jig) is a foam tie (9) connected to any of the above separators,
(A) a rod-like foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(B) a flange portion (9b) provided on the other end side of the foam tie shaft portion and in contact with the outer surface of the mold-heat insulating panel (31);
(C) a reinforcing protrusion (9c) protruding from the flange portion (9b) and positioned in the separator hole (31c);
(D) a male screw projection (9d) that projects from the reinforcement projection with a smaller diameter than the reinforcement projection (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(E) A substantially ring-shaped elastic body that is mounted around the male screw protrusion, and is formed by screwing the male screw protrusion (9d) and the high nut (3) into the reinforcing protrusion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(F) By rotating the foam tie (9) connected to the separator (1) in the direction opposite to that at the time of screwing, the high nut (3) is detached from the male screw portion (1a1). The foam tie (9) can be extracted together.

A second aspect of the foam tie according to the present invention (with a taper screw) is a foam tie (9) connected to any of the above separators,
(A) a rod-like foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(B) a flange portion (9b) provided on the other end side of the foam tie shaft portion and in contact with the outer surface of the mold-heat insulating panel (31);
(C) a reinforcing protrusion (9c) protruding from the flange portion (9b) and positioned in the separator hole (31c);
(D) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c), positioned in the separator hole (31c) and screwed into the high nut (3). ), And
(E) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that at the time of screwing. The foam tie (9) can be extracted together.

The first aspect of the mold spacing holding structure according to the present invention (with a spacer in the separator / with a fastening jig in the foam tie) holds the gap between a pair of molds, at least one of which is a mold and heat insulation panel (31). A separator having a rod-shaped shaft portion (1a) and a heat-insulating pad that comes into contact with the inner surface of the mold-frame heat insulating panel at one end of the shaft portion; and on each outer surface of the pair of mold frames In the mold interval holding structure provided with a pair of rod-shaped foam ties (9) respectively connected to both ends of the separator through separator holes (31c, 32a) that are located and formed in the pair of molds,
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) a male thread protrusion (9d) that projects from the reinforcement protrusion with a smaller diameter than the reinforcement protrusion (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(J) A substantially annular elastic body, which is mounted around the male screw projection, and is formed by screwing the male screw projection (9d) and the high nut (3) into the reinforcing projection portion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(K) The length (RL) of the sheath tube portion (1f) formed from the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8),
(L) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the fastening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the mold / heat insulation panel. Is equal to
(M) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that during screwing. The foam tie (9) can be extracted together.

In the second embodiment of the mold spacing holding structure according to the present invention (there is no spacer in the separator / the fastening tie is in the foam tie), the spacing between the pair of molds, at least one of which is a mold-use heat insulation panel (31) A separator having a rod-shaped shaft portion (1a) and a heat-insulating pad that comes into contact with the inner surface of the mold-frame heat insulating panel at one end of the shaft portion; and on each outer surface of the pair of mold frames In the mold interval holding structure provided with a pair of rod-shaped foam ties (9) respectively connected to both ends of the separator through separator holes (31c, 32a) that are located and formed in the pair of molds,
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) a male thread protrusion (9d) that projects from the reinforcement protrusion with a smaller diameter than the reinforcement protrusion (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(J) A substantially annular elastic body, which is mounted around the male screw projection, and is formed by screwing the male screw projection (9d) and the high nut (3) into the reinforcing projection portion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(K) A sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c),
(L) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the fastening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the mold / heat insulation panel. Is equal to
(M) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that during screwing. The foam tie (9) can be extracted together.

The third aspect of the mold spacing holding structure according to the present invention (with a spacer in the separator / tapered screw in the foam tie) is used for holding a gap between a pair of molds, at least one of which is a mold-heat insulating panel (31). A separator having a rod-shaped shaft portion (1a) and a heat-insulating pad that comes into contact with the inner surface of the heat-insulating panel for molds at one end of the shaft portion, and located on each outer surface of the pair of mold frames In the formwork interval holding structure provided with a pair of rod-shaped foam ties (9) respectively connected to both ends of the separator through separator holes (31c, 32a) drilled in the pair of formwork,
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c) and positioned in the separator hole (31c) and screwed into the high nut (3) ), And
(J) The length (RL) of the sheath tube portion (1f) formed from the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8),
(K) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the tightening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the formwork combined heat insulating panel. Is equal to
(L) By rotating the foam tie (9) connected to the separator (1) in a direction opposite to that during screwing, the high nut (3) is detached from the male screw portion (1a1). The foam tie (9) can be extracted together.

The fourth embodiment of the form spacing holding structure according to the present invention (no spacer in the separator / taper thread in the foam tie) is used to hold a pair of molds, at least one of which is a form and heat insulating panel (31). A separator having a rod-shaped shaft portion (1a) and a heat-insulating pad that comes into contact with the inner surface of the mold-heat insulating panel at one end of the shaft portion, and located on each outer surface of the pair of mold frames, In the formwork interval holding structure provided with a pair of rod-shaped foam ties (9) respectively connected to both ends of the separator through separator holes (31c, 32a) drilled in a pair of formwork,
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c) and positioned in the separator hole (31c) and screwed into the high nut (3) ), And
(J) A sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c),
(K) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the tightening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the formwork combined heat insulating panel. Is equal to
(L) By rotating the foam tie (9) connected to the separator (1) in a direction opposite to that during screwing, the high nut (3) is detached from the male screw portion (1a1). The foam tie (9) can be extracted together.

  The separator according to the present invention has a male screw portion that is attached to a flat plate member as a heat insulating pad that comes into contact with the inner surface of the heat insulating panel, attaches an outer nut in the separator hole, and is further exposed from the outer nut. Install a spacer and a high nut. A foam tie can be connected to this high nut. These outer nut, spacer, and high nut form a sheath tube portion in the separator hole, and the length thereof can be adjusted by the length of the spacer. Thereby, the sheath pipe part which supports appropriately the heat insulation panel of arbitrary thickness is realizable. That is, the function of the conventional shaft foot that bears the tensile force and the function of the conventional sheath tube that prevents the foam tie from being sunk into the heat insulating panel can be used. The case where the sheath tube portion has the minimum length is a case where there is no spacer.

  The foam tie of the present invention used together with the separator of the present invention includes a reinforcing projection that protrudes from the flange portion that contacts the outer surface of the heat insulation panel and is positioned in the separator hole, a male projection that protrudes from the reinforcing projection and engages with the high nut. A screw projection and a tightening jig which is a substantially annular elastic body and is mounted around the male screw projection. The tightening jig is elastically compressed and deformed between the reinforcing protrusion and the high nut by screwing the male screw protrusion and the high nut. The compression-deformed tightening jig applies an elastic pressing force to both the high nut and the foam tie, thereby coupling and integrating the high net and the foam tie. As a result, by rotating the foam tie in the direction opposite to that at the time of screwing, the high nut can be detached from the male thread portion of the separator and extracted together with the foam tie. Therefore, it is not necessary to perform the work of removing the foam tie and the work of removing the high nut separately, and the work can be performed in one operation, thereby improving workability.

  The form interval holding structure having the separator and the foam tie of the present invention also has the same effect as described above.

Hereinafter, embodiments of the present invention will be described with reference to the embodiments shown in the drawings. The separator, the foam tie, and the inter-frame holding structure using these according to the present invention are applied to the same mold as shown in FIG. 1 as an example. That is, only one of the pair of mold plates is used as a mold-frame heat insulating panel. As another example, the present invention can also be applied to a formwork in which both are used as a formwork and heat insulating panel. In the following, description will be made mainly on an example in which only one of them is a heat insulating panel also used as a formwork. However, when both are heat insulating panels used both as a formwork, the same structure (symmetrical structure with a concrete wall in between) is used for both panels. ) Should be applied.
In the following description, in the heat insulation panel, the other mold plate and other parts, the concrete wall side is defined as “inside”, “inside surface” or “inside”, and the opposite side is defined as “outside” or “outside surface”. Or referred to as “outside”.

  FIG. 4 is a view showing the vicinity of one end on the heat insulating panel side in one embodiment of the separator 1 according to the present invention. (a) is a development side view, (b) is a side view of the state which assembled (a). The separator 1 includes a rod-shaped shaft portion 1a having a predetermined diameter that is substantially equivalent to the thickness of the concrete wall to be built, and the range of the predetermined length from one end on the heat insulating panel side shown in FIG. This is a male screw portion 1a1 (shown later, but the other end has a second male screw portion). The male screw has a predetermined standard and is set to a necessary and sufficient length in the present invention. An inner nut 5A, a resin disc 4 as a heat insulating pad, and an outer nut 5B are screwed into the base of the male screw portion 1a1. Here, the length of the outer nut 5B is defined as “NL”, and the exposed length of the male screw end exposed from the outer nut 5B is defined as “SL”.

  FIG. 5 is a front view, a side view, and a B-B ′ sectional view of the resin disk 4. The resin disc 4 is a disc having a through hole in the center and circular on both end faces. As shown in FIG. 4, the resin disc 4 is fixed by an inner nut 5A and an outer nut 5B, and the outer surface of the resin disc 4 comes into contact with the inner surface of the heat insulating panel as will be described later. The resin disk 4 corresponds to a “heat insulating pad portion” of the heat insulating pad with an adjustable sheath tube according to the present invention described later. The resin disk 4 is a flat plate member that requires a certain area and strength to support a soft heat insulating material portion. The outer shape of the heat insulating pad is not limited to a circle. At the time of assembling the mold, a large torque is applied to the portion by the electric tool, so it is necessary to firmly fix the position of the heat insulating pad so as not to move. As will be described later, the outer nut 5B is located in a separator hole provided in the heat insulating panel.

  FIG. 6 is a diagram showing another embodiment of the heat insulating pad portion. The left figure of (a) is a front view and a side view of the C-shaped retaining ring 6, and the right figure is a front view of the resin disc 4. (b) is the expansion | deployment side view of the one end vicinity by the side of the heat insulation panel of the separator 1, (c) is a side view of the state which assembled (b). A C-type retaining ring 6 is used instead of the inner nut in the embodiment of FIG. The length of the outer nut 5B is NL, and the exposed length of the male screw end exposed from the outer nut 5B is SL.

  FIG. 7 is a view showing still another embodiment of the heat insulating pad portion. (a) is the front view, side view, and back view of the heat insulation pad part 7. FIG. (b) is the expansion | deployment side view of the one end vicinity by the side of the heat insulation panel of the separator 1, (c) is a side view of the state which assembled (b). A skirted nut portion 7b using a general skirted nut, a resin disc portion 7a, which is a flat plate member, and an outer nut portion 7c are integrally formed by injection molding or the like. The length of the outer nut portion 7c is NL, and the exposed length of the male screw end exposed from the outer nut portion 7c is SL.

  FIGS. 8A, 8B, and 8C are side sectional views showing the entire separator 1 in an assembled state with respect to the heat insulating pad portions shown in FIGS. 4, 6, and 7, respectively. . The total length AL of the separator 1 is determined by selecting the most appropriate one from predetermined standard dimensions based on the thickness of the concrete wall and the thickness of the heat insulation panel. When the overall length AL of the separator 1 is constant, in each of the embodiments (a), (b), and (c), the length NL of the outer nut portion and the exposed length SL of the male screw exposed from the outer nut are It is common and constant regardless of the fixing method. Therefore, the sum “NL + SL” of the outer nut NL and the external thread end exposed length SL is also common and constant regardless of the fixing method. This portion of NL + SL is a portion that is inserted into a separator hole of a heat insulating panel described later.

  Moreover, although the length of the 2nd external thread part 1a2 of the other end of the separator 1 is defined by "ML", this is also constant. Therefore, regarding the length of the central rod-shaped portion defined by “PL” and the overall length of the male screw portion 1a1 defined by “QL”, the sum “PL + QL” is constant, but depending on the fixing method Each will be relatively different.

  FIG. 9 is a front view, a side view, and a rear view of the spacer 8 attached to the exposed portion of the male screw portion 1a1. As shown in the front view and the rear view, the spacer 8 has a point-symmetrical shape (circular, regular polygon, etc.) with a predetermined outer diameter. And it is the cylindrical shape which has the through-hole 8a of the diameter which the external thread part 1a1 of the above-mentioned separator 1 passes without resistance. The outer diameter of the spacer 8 is set such that it can be inserted into the separator hole without resistance. The spacer 8 has an inner end surface adjacent to the outer end surface of the outer nut 5B of FIGS. 4 and 6 or the outer nut portion 7c of FIG. 7, and is positioned in the separator hole. The spacer 8 is a part of the “sheath tube portion” in the heat insulating pad with adjustable sheath tube according to the present invention described later. Then, the length of the sheath tube part is adjusted by adjusting the length of the spacer 8. Therefore, the spacer 8 can be prepared with an arbitrary length. Here, the length of the spacer 8 is defined as “JL”. The spacer 8 can be formed by simply cutting a commercially available resin tube or metal tube having an appropriate rigidity into a desired length, or by cutting a commercially available rod-shaped material of the above-mentioned material into an arbitrary length. There is a method of drilling holes with a drill. Since such processing is easy, it can be performed non-professionally as compared with the case where a conventional steel shaft foot is manufactured to an arbitrary length. Therefore, the manufacturing cost is also low.

  FIG. 10 is a front view, a side view, and an A-A ′ cross-sectional view of the steel high nut 3 that is screwed with the exposed portion of the male screw portion 1a1 adjacent to the spacer 8 shown in FIG. As shown in the front view of the high nut 3, the cross-sectional shape of the columnar portion 3a is a point-symmetric shape (circular, regular polygon, etc.). The through-hole provided on the shaft of the column body portion 3a is a female screw hole 3b provided with a standard female screw that is screwed into the male screw portion 1a1. The outer diameter of the high nut 3 is set such that it can be inserted into the separator hole without resistance. The inner end surface of the high nut 3 is adjacent to the outer end surface of the spacer 8 in FIG. 9 and is located in the separator hole. The high nut 3 is also a part of the “sheath tube portion” in the heat insulating pad with adjustable sheath tube according to the present invention described later. The length of the high nut 3 is set to a certain length. Here, the length of the high nut 3 is defined as “TL”.

  It is preferable to process the bit groove 3c on one end surface or both end surfaces of the high nut 3 so that the driver bit of the electric tool is engaged. When the bit groove 3c is provided on the one end surface, the high nut 3 is disposed so that the bit groove 3c faces outward. When the bit grooves 3c are present on both end faces, the bit nuts 3c can be arranged without being aware of the direction of the high nut 3. Further, when the length of the high nut 3 is set to be relatively long (approximately 30 mm or more), it is costly to process the female screw over the entire length of the female screw hole 3b. The external thread may be processed by an amount corresponding to the length of meshing to obtain a predetermined tensile strength, and the other portions may be smooth surfaces.

  FIG. 11 is a view showing an assembled state in which the high nut 3 shown in FIG. 10 is attached to one end of the separator 1 shown in FIG. (a) is an assembled state when the spacer 8 of FIG. 9 is not used, and (b) is an assembled state using the spacer 8 shown in FIG.

  In FIG. 11A, the high nut 3 is attached to the exposed portion of the male screw portion 1a1 to which the resin disc 4 and the outer nut 5B are attached, with the bit groove 3c facing outward, and the high nut 3 contacts the outer nut 5B. Screwed until contact. In this case, it is not necessary to tighten at the final end, and it may be loosely screwed. In this state, the resin disc 4 as the heat insulating pad, the outer nut 5B, and the high nut 3 form the heat insulating pad 1g with an adjustable sheath. Among these, the outer nut 5B and the high nut 3 arranged in a row form the sheath tube portion 1f. However, this corresponds to the case where the sheath tube portion 1f has the minimum length. If the meshing length of the male screw portion 1a1 and the high nut 3 is defined as “Lx”, the meshing length Lx in FIG. 11A is the maximum value “Lmax” and coincides with the exposed length SL of the male screw. . At this time, the minimum length RLmin of the sheath tube portion 1f is NL + TL.

  In FIG. 11 (a), the other end of the high nut 3 extends further outward than the tip of the male screw portion 1a1. Since a foam tie, which will be described later, is connected to the other end of the high nut 3 by screwing, the length from the tip of the male screw portion 1a1 to the other end of the high nut 3 is at least a predetermined tensile strength. Engagement length is required to connect the two.

  Next, as shown in FIG. 11B, the case where the meshing length Lx of the high nut 3 and the male thread portion 1a1 is the minimum value “Lmin” corresponds to the case where the sheath tube portion 1f is the maximum length. The minimum value Lmin is the minimum length that can ensure a predetermined tensile strength. In this case, if the high nut 3 is simply loosened, the high nut 3 will also rotate together when the foam tie is later screwed into the high nut 3, so the gap between the outer nut 5B and the high nut 3 is shown in FIG. Insert the spacer 8. The spacer 8 is formed to have a length that just fills this gap. The maximum length RLmax of the sheath tube portion 1 f at this time is NL + SL + TL−Lmin. In this state, the resin disc 4 as the heat insulating pad, the outer nut 5B, the spacer 8, and the high nut 3 form the heat insulating pad 1g with an adjustable sheath. Among these, the outer nut 5B, the spacer 8, and the high nut 3 arranged in a line form the sheath tube portion 1f.

  In the case of the intermediate length RL from the minimum length RLmin to the maximum length RLmax of the sheath tube portion 1f, it can be adjusted by changing the meshing length Lx of the high nut 3 and the male screw portion 1a1. The intermediate length RL is expressed by NL + SL + TL−Lx, and is expressed by using the length JL of the spacer 8 as NL + JL + TL. The spacer 8 having an arbitrary length JL is prepared, and the length RL of the sheath tube portion 1f is adjusted.

Next, the foam tie used in the present invention will be described.
FIG. 12 is a front view and a side view of a general form tie (hereinafter, “general form tie”) 20 shown in FIG. It has a rod-shaped shaft portion provided with a ball screw portion 21 having a predetermined length from one end, a flange portion 25 provided at the other end, and a female screw portion 24 formed in the axial direction from the center of the other end surface. Conventionally, the female screw portion 24 is connected to the male screw of the shaft foot 10b in FIG.

FIG. 13 (a) is a side view of a foam tie 9 according to the present invention. (b1) and (b2) are examples of a method for producing the foam tie 9.
As shown in FIG. 13A, the foam tie 9 is the same as the conventional one in that it has a rod-shaped shaft portion provided with a ball screw portion 9a having a predetermined length from one end. The foam tie 9 includes a flange portion 9b provided in the vicinity of the other end, a reinforcing protrusion portion 9c protruding from the flange portion 9b, and a male screw protrusion 9d protruding from the reinforcing protrusion portion. Since the flange portion 9b is in contact with the outer surface of the heat insulating panel, the reinforcing protrusion 9c and the male screw protrusion 9d are located in the separator hole of the heat insulating panel. The male screw projection 9d has a predetermined standard and length, and is screwed into the end portion of the high net 3 in the assembled separator 1 shown in FIG. The reinforcing protrusion 9c is for reinforcing the base of the male screw protrusion 9d, and makes it difficult for the male screw protrusion 9d to be bent when the foam tie is dropped. The outer diameter and length of the reinforcing protrusion 9c are appropriate. The length of the reinforcing protrusion 9c is defined as “HL”. The foam tie 9 according to the present invention is such a foam tie with male thread protrusions.

  In order to manufacture the foam tie 9 simply, as shown in FIG. 13 (b1), the internal thread portion 24 of the commercially available general foam tie 20 is firmly fixed by using all screw bolts 9d 'of a predetermined size together with an adhesive or the like. And is integrated with the foam tie 9. Furthermore, as shown in (b2), in forming the reinforcing projection 9c, a nut having a similar outer diameter and a predetermined thickness may be screwed onto all the screw bolts.

  14 (a) and 14 (b) are examples of a tightening jig 9e mounted around the male screw projection 9c of the foam tie 9, respectively. The outer diameter of the tightening jig 9e is such that it can be inserted into the separator hole of the heat insulation panel without resistance. The tightening jig 9e is a substantially annular elastic body, and is elastically formed between the reinforcing protrusion 9c and the high nut 3 by screwing the male screw protrusion 9d of FIG. 13 and the high nut 3 of FIG. It is compressed and deformed to a predetermined length (thickness). The length of the tightening jig during compression deformation is defined as “BL”. (a) is an example of a steel spring washer. The restoring stress of a crushed spring increases the frictional resistance by pressing the foam tie and the high nut in the axial direction against both sides to increase the friction tie. There is an effect of integrating the nut. (b) is an example of a resin washer, and the same effect as that of a spring washer is achieved by crushing a soft resin material compared to a steel material. As a result, when the foam tie is removed, the high nut rotates together with the foam tie and can be removed together with the foam tie when the foam tie is rotated in the direction opposite to the screwing. This will be described in detail with reference to FIG.

  As described above, the separator 1 according to the present invention can adjust the length of the sheath tube portion located in the separator hole by the length of the spacer 8 (including the case where the spacer 8 is not provided). Even when the high nut 3 is selected, it can be applied to a heat insulating panel having an arbitrary thickness (defined as “DL”) within a predetermined range.

FIG. 15 is a diagram showing a fixing procedure (a) and a fixed state (b) when the separator 1 and the high nut 3 having a certain length are applied to the heat insulating panel 31 having the minimum thickness DLmin. In this case, the sheath tube portion 1f of the heat-insulating pad with adjustable sheath tube 1g in the separator 1 has the minimum length RLmin. That is, this is a case where the spacer 8 shown in FIG. 11A is not provided, and is composed of only the outer nut 5B and the high nut 3.
As shown in FIG. 15A, the inner surface side of the heat insulating panel 31 is brought close to the sheath tube portion 1f of the separator 1, and the sheath tube portion 1f is inserted into the separator hole 31c. Further, the foam tie 9 is inserted into the separator hole 31 c from the outer surface side of the heat insulating panel 31, and the male screw protrusion 9 d is screwed into the high nut 3.
As shown in FIG. 15 (b), in the fixed state, the heat insulating panel 31 is sandwiched between the resin disk 4 as a heat insulating pad and the flange 9b. In actual construction, the foam tie 9 is tightened with an electric tool, so a large torque is applied to the foam tie 9, but the thickness DLmin of the heat insulation panel 31 and the distance (RLmin + BL + HL) between the heat insulation pad 4 and the flange 9b are equal. It will not be overtightened and will not destroy the insulation panel 31 and will not loosen as well.

FIG. 16 is a diagram showing a fixing procedure (a) and a fixing state (b) when the separator 1 and the high nut 3 having the same fixed length as those in FIG. 15 are applied to the heat insulating panel 31 having the maximum thickness DLmax. is there. In this case, the sheath tube portion 1f of the heat-insulating pad with adjustable sheath tube 1g in the separator 1 has the maximum length RLmax. That is, this is the case of the maximum length using the spacer 8 shown in FIG.
As shown in FIG. 16A, the inner surface side of the heat insulating panel 31 is brought close to the sheath tube portion 1f of the separator 1, and the sheath tube portion 1f is inserted into the separator hole 31c. Further, the foam tie 9 is inserted into the separator hole 31 c from the outer surface side of the heat insulating panel 31, and the male screw protrusion 9 d is screwed into the high nut 3.
As shown in FIG. 16 (b), in the fixed state, the heat insulating panel 31 is sandwiched between the resin disk 4 as a heat insulating pad and the flange 9b. Similarly, in the actual construction, since the foam tie 9 is tightened with an electric tool, a large torque is applied to the foam tie 9, but the thickness DLmax of the heat insulation panel 31 and the distance (RLmax + BL + HL) between the heat insulation pad 4 and the flange 9b are as follows. Since they are equal, they will not be overtightened to destroy the insulation panel 31 and will not loosen as well.

  As can be seen from FIGS. 15 and 16, the adjustable distance between the heat insulating pad 4 and the flange 9b is the length RL of the sheath tube portion 1f, the length BL of the tightening jig 9e, and the reinforcing protrusion 9c. The sum of length HL (RL + BL + HL). The length RL of the sheath tube portion 1f can be adjusted between the minimum lengths RLmin and RLmax by adjusting the length of the spacer 8 (including the case where there is no spacer). Thereby, it can respond to the heat insulation panel 31 of arbitrary thickness DL of the range of DLmin <= DL <= DLmax. DLmin = RLmin + BL + HL and DLmax = RLmax + BL + HL.

  FIG. 17 is a side view showing an assembled state of the entire mold including the mold / heat insulating panel 31 and the other mold plate 32 which is a return mold. Although the above-mentioned content was related to the fixing means of the heat insulating panel 31, the wall formwork has an opposing return formwork. In fixing the heat insulating panel, the foam tie 9 having male thread protrusions is used. However, the foam tie 9 can be commonly used for fixing the conventional mold plate 32. Therefore, it is not necessary to prepare both the general form tie 20 and the form tie 9. When the general form tie 20 (with a female screw hole) is used for a mold plate 32 which is a mold plywood, in order to support the inner surface of the mold plate 32, a P-concave with a protruding male screw shown in FIG. As shown in FIG. 17, when a foam tie 9 (with a male screw projection) is used for the formwork plate 32, as shown in FIG. 17, the beam P-component, which is a conventional member with a female screw, is used. There is no problem if 1e is used. The tip of the female thread portion 1e1 of the beam P-con 1e is at the same position as the contact surface of the beam P-con 1e. The male screw projection d of the foam tie 9 penetrates the separator hole 32a and is screwed with the female screw portion 1e1 of the beam P-con 1e.

  Although it is a preferred example to use the beam P-con and the foam tie 9 on the side of the mold plate 32, it is not essential, and the conventional P-container with male screw and the general form tie 20 with female screw are used as usual. The use is also included in the present invention. Therefore, in the present invention, the meaning of “P-con” to be brought into contact with the inner surface of the mold plate 32 may include both a P-con with a male thread and a P-con for a beam with a female thread.

  As described above, according to the present invention, the length of the sheath tube portion 1f is adjusted by using a spacer that can be easily processed without manufacturing a conventional metallic member (shaft foot) that is difficult to process to an arbitrary length. Thus, it was possible to obtain the heat-insulating pad with adjustable sheath 1g and the foam tie 9 that can be firmly clamped and fixed to any heat-insulating panel thickness within a predetermined range.

  FIG. 18 is a view showing a process of pulling out the foam tie 9 in the formwork dismantling work after placing and solidifying the concrete. In the case of the prior art shown in FIG. 1, when the general form tie 20 is removed, it is almost always the case that the general form tie 20 is pulled out, and whether the shaft foot 10 b is also pulled out is due to chance. When the shaft foot 10d remained, the work of extracting the shaft foot 10b had to be performed twice. As in the prior art, the foam tie 9 according to the present invention is also pulled out by an impact driver with a socket. Between the foam tie 9 and the high nut 3 which are screwed together, a fastening jig 9e which is elastically compressed and deformed is interposed, and a pressing force by an elastic restoring force is applied to both the foam tie 9 and the high nut 3. And both are integrated. Accordingly, as shown in FIG. 18, when the foam tie 9 is unscrewed, the high nut 3 also rotates together with the foam tie 9, and the high nut 3 is detached from the male screw portion 1 a 1 and pulled out together with the foam tie 9. . Thereafter, the foam tie 9 and the high nut 3 are separated at a place where the work is easy. Both the foam tie 9 and the high nut 3 can be reused any number of times.

FIGS. 19A, 19B and 19C are side views showing another embodiment of the foam tie 9, respectively. In the embodiment (a), the tightening jig 9e is fixed to the reinforcing protrusion 9c of the foam tie 9 in advance by welding 9e1. In the embodiment of (b), a small diameter body detail 9d1 is formed at the base of the male screw projection 9d so that the tightening jig 9e cannot be removed. In these embodiments, it is not necessary to attach the tightening jig 9e every time work is performed, and the work becomes easy.
In the embodiment of FIG. 19 (c), the same effect can be obtained without using the tightening jig 9e by making all the thread bolts of the male thread protrusions of the foam tie 9 into taper screws 9d ′. Can do.

  FIG. 20 is a view showing a method of treating the separator hole 31a of the heat insulation panel 31 after the high nut 3 is removed. After filling the cylindrical heat insulating reinforcing material 36 fitted to the inner diameter of the separator hole 31c, the opening of the separator hole 31c is closed with an appropriate resin cap 37. Instead of the resin cap 37, a commercially available putty material or the like may be filled. This prevents a heat insulation defect in the separator hole 31a.

As described above, the length of the sheath tube portion inserted into the separator hole can be adjusted according to the thickness of the heat insulation panel within a certain range, and the heat insulation pad with an adjustable sheath tube portion and the means for fixing the heat insulation panel using the same are shown. It was.
As a result, the heat insulation panel can be installed with a large contact area between the heat insulation pad portion and the foam tie flange portion without using the conventional shaft foot, which can be adjusted in length only in units of 5 mm, and without being recessed or floating. Can be pinched firmly and fixed.
In addition, a high nut extraction operation (in the conventional construction method, a shaft foot extraction operation) can be performed together with the form tie extraction operation at the time of mold form dismantling, and the problems of the prior art can be solved.

  Note that the illustrated shapes are examples, and the present invention is not limited to these. Modifications that have the same operational effects as those of the present invention that are obvious to those skilled in the art and combinations of these are also possible. And within the scope of the present invention.

Hereinafter, the manufacture example of each component of this invention and the construction example of the concrete wall using these are shown. For each component, the required number shall be manufactured.
(1) Production Example of High Nut 3 (see FIG. 10) (i) A regular hexagonal steel material having a width of 12 mm on two sides was processed to a length of 50 mm, and a through hole having a diameter of 8.0 mm was drilled in the center of the cross section.
(Ii) Next, a female screw having a length of 14 mm and a length of 2 minutes and 5 mm was processed at both ends of the through hole in the round steel bar.
(Iii) Next, groove processing with a width of 1.5 mm and a depth of 3.0 mm, which becomes a driver bit groove, was performed on one end surface of the steel material. Further, a chromate plating process was performed in a subsequent process.

(2) Manufacture example of shaft portion 1a of separator 1 (see FIG. 8) (i) Assuming a concrete wall thickness of 180 mm to be constructed, a round bar steel material having a predetermined outer diameter was processed to a length of 203 mm.
(Ii) Next, the length of the male screw portion on one end side (heat insulation panel side) of the round bar steel material is 48.5 mm, and the length of the second male screw portion on the other end side (form plate side) is 8 The screw was machined with a screw diameter of 2 minutes and 5 mm. Further, a two-side press process for a wrench was performed on the separator shaft in a subsequent process.

(3) Production Example of Resin Disc 4 (see FIG. 5) A resin disc having an outer diameter of 40 mm, a thickness of 3 mm, and a through hole having an inner diameter of 8.0 mm at the center was injection molded using polyethylene resin.

(4) Example of production of inner nut 5A and outer nut 5B (see FIG. 4) of resin disc 4 (i) Hexagonal hexagon having a screw diameter of 2/5 mm, a width across flats of 13.6 mm, and a thickness of 6.5 mm. 1 type nut was produced.
(Ii) As an outer nut, a hexagonal type 3 nut having a screw diameter of 2 minutes and 5 mm, a width across flats of 13.0 mm, and a thickness of 5 mm was produced.

(5) Assembly example of separator 1 with resin disk (see FIG. 4)
(I) The hexagonal type 1 nut of (4) above is screwed to the base of the 48.5 mm male thread portion of the separator of (2) above, and the resin disk of (3) above is press-fitted from above. From above, the hexagonal type 3 nut of the above (4) was screwed to fix the resin disk. Thus, a separator with a resin disk having the shape shown in FIG. 4 was assembled. The exposed length SL of the male screw at this time was 39 mm.

(6) Example of assembly of insulation pad 1g with sheath tube (see FIG. 15)
The high nut of the above (1) was screwed into the separator with a resin disk of the above (5), and a heat insulating pad with a sheath tube (no spacer) was assembled.

(7) Production example of foam tie 9 (see FIG. 13) (i) One end portion has a flange portion having a diameter of 29 mm and a thickness of 4 mm, a reinforcing projection portion having an outer diameter of 11.5 mm and a height of 4 mm, and the other end The part was formed by using various presses to form a 186 mm long form tie having a ball screw having an outer diameter of 13.2 mm and a length of 132 mm.
(Ii) Next, a female screw having a depth of 10 mm and a length of 2 minutes and 5 mm was processed in the center of the reinforcing protrusion with a tapping drill.
(Iii) Next, all screw bolts with a length of 26 mm, 2 minutes and 5 mm are machined, and an inorganic adhesive is applied to the female thread portion of the above-mentioned foam tie prototype and screwed to form a 16 mm long male screw projection. Formed.

(8) Mounting example of tightening jig 9e (see FIG. 14) to foam tie 9 (i) A spring washer having a thickness of 2.0 mm, an outer diameter of 12.5 mm, and an inner diameter of 8.4 mm was manufactured.
(Ii) A spring washer was spot-welded and fixed to the base of the male thread protrusion of the foam tie to produce a foam tie with a tightening jig.

(9) Preparation of beam P-con 1e (see FIG. 8) A predetermined number of commercially available beam P-cons were prepared.

(10) Manufacturing example of mold and heat insulating panel 31 (see FIGS. 15 and 16) (i) A predetermined amount of heat is applied to the surface of a heat insulating plate made of beaded polystyrene foam having a width of 923 mm, a length of 2720 mm, and a thickness of 54 mm. The adhesive was applied to the entire surface with a roll coater, and a calcium silicate plate 6 mm having a width of 910 mm, a thickness of 6 mm, and a length of 2420 mm was laminated thereon, pressed, and then dried and integrated for one day.
(Ii) Next, the four rounds of the bonded product were cut to produce a heat insulating panel having a width of 900 mm, a thickness of 60 mm, and a length of 2700 mm.
(Iii) Next, a separator hole having an outer diameter of 15 mm penetrating the heat insulation panel was processed at a predetermined position of the heat insulation panel.

(11) Forming process example of formwork (see FIGS. 21 and 22)
(I) The P-concave 1e for a beam was screwed to the second male screw portion 1a2 of the separator 1 and attached to the base.
(Ii) A washer 9f and a nut were attached to the ball screw portion 9a of the foam tie 9 with a tightening jig.
(Iii) Next, as shown in FIG. 21, an inking stand 38 is attached to the construction surface, and a separator having an outer diameter of 15 mm is placed at the same position as the separator hole of the opposing heat insulating panel according to the position of the stand 38. The mold plate 32, which is a plywood mold with the holes 32a drilled, was erected.
(Iv) The steel bar 41 was temporarily fixed and fixed.
(V) Two workers are arranged on both sides of the mold plate 32, and one person abuts the end face of the beam P-con 1e of the separator 1 from the inner surface of the mold plate 32 to the separator hole. One person turned the foam tie 9 from the outer surface of the mold plate 32 into the separator hole, screwed it with the P-concave for the beam on the inner surface, and fastened it firmly with an impact driver.
(Vi) Next, the vertical butter material 33 and the horizontal butter material 34 are attached, the nut of the foam tie 9 is tightened, the horizontal butter material 34 is fixed with the washer 9f, and the formwork is temporarily supported by the pipe support for the fall. Assemble one side of the formwork.
(Vii) Next, as shown in FIG. 22, the separator hole 31c of the heat insulation panel 31 is aligned with the sheath pipe portion 1f of the heat insulation pad with adjustable sheath pipe of the separator 1 fixed to the mold plate 32. The insulation panel 31 was built vertically while being inserted.
(Viii) Next, the foam tie 9 with a tightening jig was turned into the separator hole 31c of the heat insulating panel 31 and screwed with a high nut, and then tightened with an impact driver to be firmly fixed. At this time, the foam tie was strongly tightened with an impact driver. However, since the sheath tube portion 1f and the fastening jig and the reinforcing protrusion of the foam tie 9 serve as stoppers, the foam tie is attached to the reinforcing material 31b of the heat insulating panel 31. The flange portion of 9 was not cut and damaged. (Ix) Subsequently, vertical butterfly material and horizontal butterfly material (not shown) were installed, and the washer of the foam tie 9 was tightened and fixed firmly. Thereby, the formwork was completed.

(12) Example of concrete placing process (i) Concrete was placed in the mold completed according to the above (11) and cured for a predetermined period. At this time, the state of the heat insulation panel after placement was inspected. As a result, it was confirmed that it was placed well.

(Ii) Next, after curing the concrete for a predetermined period, the formwork was dismantled. When the impact screwdriver was turned counterclockwise, the foam tie with the tightening jig was pulled out. At that time, it was confirmed that the high nut of the sheath tube part was removed together with the foam tie due to the effect of the tightening jig. As a result, the dismantling time was shortened compared to the conventional method.
(Iii) Next, the heat insulation repair material was pushed into the separator hole of the heat insulation panel after the high nut was pulled out, and a resin cap was inserted to perform surface treatment.

It is a longitudinal cross-sectional view explaining two examples of a prior art. It is a longitudinal cross-sectional view explaining one of the problems of a prior art. It is a longitudinal cross-sectional view explaining one of the problems of a prior art. It is a figure which shows the partial structure of the edge part by the side of the heat insulation panel in one Example of the separator 1 by this invention. (a) is a development side view, (b) is a side view of the state which assembled (a). It is the front view, side view, and B-B 'sectional view of a resin disk. It is a figure which shows another Example of a heat insulation pad part. The left figure of (a) is a front view and a side view of the C-type retaining ring, and the right figure is a front view of a resin disk. (b) is a development side view, (c) is a side view of the state which assembled (b). It is a figure which shows another Example of a heat insulation pad part. (a) is the front view, side view, and back view of a heat insulation pad part. (b) is a developed side view of the separator in the vicinity of one end on the heat insulating panel side, and (c) is a side view of the assembled state of (b). (a) (b) (c) is the side view which showed the whole separator in the assembly state about the Example of the heat insulation pad part shown in FIG.4, FIG6 and FIG.7, respectively. It is the front view, side view, and rear view of the spacer attached to the exposed part of the front end side of a male screw part. FIG. 10 is a front view, a side view, and an A-A ′ cross-sectional view of a steel high nut that is screwed into an exposed portion of a male screw portion adjacent to the spacer shown in FIG. 9. It is a figure which shows the assembly state which attached the high nut shown in FIG. 10 to the end of the separator shown in FIG.4 (b). 9A shows an assembled state when the spacer of FIG. 9 is not used, and FIG. 9B shows an assembled state using the spacer shown in FIG. It is the front view and side view of the general foam tie shown in FIG. (a) is a side view of a foam tie according to the present invention. (b1) and (b2) are examples of a method for producing a foam tie. (a) And (b) is an Example of the fastening jig | tool with which the circumference | surroundings of the external thread protrusion of a foam tie are each mounted | worn. It is a figure which shows the fixed procedure (a) at the time of applying the separator 1 and the high nut 3 of fixed length to the heat insulation panel 31 of minimum thickness, and a fixed state (b). It is a longitudinal cross-sectional view explaining the state which attached the heat insulation pad with a sheath pipe | tube (state of maximum length) which can adjust length to the heat insulation panel. It is a side view which shows the assembly state of the whole mold frame including the mold frame combined heat insulation panel 31 and the other mold plate which is a return mold frame. It is the figure which showed the process of extracting a foam tie in the formwork dismantling work after concrete placement and solidification. (a), (b) and (c) are side views showing another embodiment of a foam tie, respectively. It is a longitudinal cross-sectional view explaining the state of the surface treatment of a sheath pipe insertion hole after extracting a high nut. It is a longitudinal cross-sectional view explaining the construction process of a formwork in an Example. It is a longitudinal cross-sectional view explaining the construction process of a formwork in an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Separator, 1a: Shaft part, 1a1: Male thread part, 1a2: 2nd female thread part, 1e: P connec for beam, 1e1: P con female thread part, 1f: Sheath pipe part, 1g: Adjustable sheath pipe Heat-insulating pad 3: High nut 4: Resin disk 4a: Through hole 5A: Inner nut 5B: Outer nut 6: Retaining ring 7: Heat-insulating pad part, 7a: Resin disk part, 7b: Nut part with skirt, 7c : Outer nut part 8: Spacer 9: Foam tie, 9a: Ball screw part, 9b: Flange part, 9c: Reinforcement protrusion part, 9d: Male screw protrusion, 9e: Tightening jig, 9f: Washer 10: Conventional separator 20: General foam tie 31: Insulation panel, 31a: Insulation material, 31b: Reinforcement material, 31c: Separator hole 32: Form plate, 32a: Separator hole 33: Vertical flap material 34: Horizontal flap material 41: Rebar

Claims (8)

At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end of the shaft and the shaft (1a). A pair of foam ties (9) located on each outer surface of the pair of molds through separator holes (31c, 32a) drilled in the pair of molds, respectively. In the separator (1)
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
(F) The length (RL) of the sheath tube portion (1f) formed by the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8). At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end side of the rod-shaped shaft (1a) and the shaft. A pair of foam ties (9) located on each outer surface of the pair of molds through separator holes (31c, 32a) drilled in the pair of molds, respectively. In the separator (1)
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
(E) Formwork interval holding characterized in that a sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c). Separator for use. A foam tie (9) connected to the separator according to claim 1 or 2,
(A) a rod-like foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(B) a flange portion (9b) provided on the other end side of the foam tie shaft portion and in contact with the outer surface of the mold-heat insulating panel (31);
(C) a reinforcing protrusion (9c) protruding from the flange portion (9b) and positioned in the separator hole (31c);
(D) a male screw projection (9d) that projects from the reinforcement projection with a smaller diameter than the reinforcement projection (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(E) A substantially ring-shaped elastic body that is mounted around the male screw protrusion, and is formed by screwing the male screw protrusion (9d) and the high nut (3) into the reinforcing protrusion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(F) By rotating the foam tie (9) connected to the separator (1) in the direction opposite to that at the time of screwing, the high nut (3) is detached from the male screw portion (1a1). A foam tie which can be removed together with the foam tie (9). A foam tie (9) connected to the separator according to claim 1 or 2,
(A) a rod-like foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(B) a flange portion (9b) provided on the other end side of the foam tie shaft portion and in contact with the outer surface of the mold-heat insulating panel (31);
(C) a reinforcing protrusion (9c) protruding from the flange portion (9b) and positioned in the separator hole (31c);
(D) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c), positioned in the separator hole (31c) and screwed into the high nut (3). ), And
(E) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that at the time of screwing. A foam tie which can be removed together with the foam tie (9). At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end of the shaft and the shaft (1a). A pair of separators each provided with a heat insulating pad to be in contact with each other, and a pair connected to both ends of the separator through separator holes (31c, 32a) located on the outer surfaces of the pair of molds and formed in the pair of molds. In the form interval holding structure provided with a rod-shaped foam tie (9)
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) a male thread protrusion (9d) that projects from the reinforcement protrusion with a smaller diameter than the reinforcement protrusion (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(J) A substantially annular elastic body, which is mounted around the male screw projection, and is formed by screwing the male screw projection (9d) and the high nut (3) into the reinforcing projection portion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(K) The length (RL) of the sheath tube portion (1f) formed from the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8),
(L) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the fastening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the mold / heat insulation panel. Is equal to
(M) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that during screwing. A form spacing holding structure which can be removed together with the foam tie (9). At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end of the shaft and the shaft (1a). A pair of separators each provided with a heat insulating pad to be in contact with each other, and a pair connected to both ends of the separator through separator holes (31c, 32a) located on the outer surfaces of the pair of molds and formed in the pair of molds. In the form interval holding structure provided with a rod-shaped foam tie (9)
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) a male thread protrusion (9d) that projects from the reinforcement protrusion with a smaller diameter than the reinforcement protrusion (9c), is positioned in the separator hole (31c), and is screwed into the high nut (3);
(J) A substantially annular elastic body, which is mounted around the male screw projection, and is formed by screwing the male screw projection (9d) and the high nut (3) into the reinforcing projection portion and the high nut. A clamping jig (9e) that is elastically compressed and deformed between,
(K) A sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c),
(L) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the fastening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the mold / heat insulation panel. Is equal to
(M) The high nut (3) is detached from the male screw portion (1a1) by turning the foam tie (9) connected to the separator (1) in the direction opposite to that during screwing. A form spacing holding structure which can be removed together with the foam tie (9). At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end side of the rod-shaped shaft (1a) and the shaft. A pair of separators each provided with a heat insulating pad to be in contact with each other, and a pair connected to both ends of the separator through separator holes (31c, 32a) located on the outer surfaces of the pair of molds and formed in the pair of molds. In the form interval holding structure provided with a rod-shaped foam tie (9)
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) a cylindrical spacer (8) located in the separator hole (31c) adjacent to the outer nut (5B) and allowing the male screw portion (1a1) to be inserted;
(E) Located in the separator hole (31c) adjacent to the spacer (8), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) extending and connectable to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c) and positioned in the separator hole (31c) and screwed into the high nut (3) ), And
(J) The length (RL) of the sheath tube portion (1f) formed from the outer nut (5B), the spacer (8) and the high nut (3) arranged in a row in the separator hole (31c) ) Can be adjusted by adjusting the length (JL) of the spacer (8),
(K) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the tightening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the formwork combined heat insulating panel. Is equal to
(L) By rotating the foam tie (9) connected to the separator (1) in a direction opposite to that during screwing, the high nut (3) is detached from the male screw portion (1a1). A form spacing holding structure which can be removed together with the foam tie (9). At least one of them is used to maintain a distance between a pair of molds, which is a mold / heat insulation panel (31), and is attached to the inner surface of the mold / heat insulation panel at one end side of the rod-shaped shaft (1a) and the shaft. A pair of separators each provided with a heat insulating pad to be in contact with each other, and a pair connected to both ends of the separator through separator holes (31c, 32a) located on the outer surfaces of the pair of molds and formed in the pair of molds. In the form interval holding structure provided with a rod-shaped foam tie (9)
The separator (1) is
(A) a male screw part (1a1) provided by a predetermined length from one end of the shaft part (1a);
(B) a flat plate member (4, 7a) fixed to the male screw portion so as to abut against the inner surface of the mold-heat insulating panel as the heat insulating pad;
(C) an outer nut (5B) located in the separator hole (31c) adjacent to the flat plate member (4, 7a) and screwed into the male screw portion (1a1);
(D) Located in the separator hole (31c) adjacent to the outer nut (5B), screwed into the male screw portion (1a1), and further outward than the tip of the male screw portion (1a1) A high nut (3) that extends and can be connected to the foam tie,
The foam tie (9)
(F) a rod-shaped foam tie shaft portion provided with a ball screw portion (9a) of a predetermined length from one end;
(G) a flange portion (9b) provided on the other end side of the foam tie shaft portion and abutting against the outer surface of the mold-heat insulating panel (31);
(H) a reinforcing projection (9c) protruding from the flange (9b) and positioned in the separator hole (31c);
(I) A tapered male screw projection (9d ′) projecting from the reinforcement projection with a smaller diameter than the reinforcement projection (9c) and positioned in the separator hole (31c) and screwed into the high nut (3) ), And
(J) A sheath tube portion (1f) is formed by the outer nut (5B) and the high nut (3) arranged in a row in the separator hole (31c),
(K) The sum (RL + BL + HL) of the lengths of the sheath tube portion, the tightening jig, and the reinforcing projection portion located in the separator hole (31c) is the thickness (DL) of the formwork combined heat insulating panel. Is equal to
(L) By rotating the foam tie (9) connected to the separator (1) in a direction opposite to that during screwing, the high nut (3) is detached from the male screw portion (1a1). A form spacing holding structure which can be removed together with the foam tie (9).

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