JP6317283B2 - Concrete mold holding and tightening member that is integrated and integrated for rust prevention and waterproofing - Google Patents

Description

  The present invention relates to a concrete formwork holding and tightening member that is integrated and set in combination with rust prevention and waterproofing provided at least at one end of a round separator to hold the formwork at a predetermined interval.

  A concrete structure is usually formed by screwing a concrete formwork holding and tightening member into male thread portions formed at both ends of a round separator, and holding a pair of formwork spaced apart by a predetermined distance. Pour concrete between frames and harden.

  Here, as a conventional concrete formwork holding and tightening member, for example, the central core (6), which is a round separator, can be easily adapted to the wall thickness of the concrete by changing the length of the central core (6). The core rods (7) and (7), which are joint bolts, are provided on both sides of the core rods (8) and (8), respectively. A concrete formwork holding and tightening member is proposed in which caps (13) and (13) for supporting the formwork (15) and (15) are provided in contact with (15) (see, for example, Patent Document 1). .

  In the concrete formwork holding and tightening member described in Patent Document 1, the outer periphery of the core cores (7) and (7) close to the concrete wall surface is subjected to solvent degreasing as a ground treatment, and baked by blasting and base coating. After that, the paint coating layer (3) is applied as a top coat by baking of epoxy paint and fluorine paint to prevent rusting, while the center core (6) and connecting nuts (8) (8) are painted. The coating layer (3) is not deposited.

Japanese Patent No. 5676159

  However, in the concrete formwork holding and tightening member described in Patent Document 1 described above, the central core (6) and the connecting nuts (8) and (8) do not adhere the coating coating layer (3). There is a problem that the central core (6), which is a round separator, and the connection nuts (8), (8), which are joint nuts, are rusted by rainwater or the like that has penetrated.

  Therefore, the present invention has been made by paying attention to such problems, such as round separators, joint nuts, joint bolts, metal parts of rust-proof and waterproof pre-filled con, etc. due to rain water that permeates from the concrete wall surface, etc. An object of the present invention is to provide a concrete formwork holding and tightening member that is integrated and set to prevent rusting as much as possible.

In order to solve the above-mentioned problems, the concrete formwork holding and tightening member that is integrated and combined with rust prevention and waterproofing according to the present invention is provided with at least one of the round separators for holding the formwork spaced apart by a predetermined distance. It is a concrete form holding and tightening member that is integrated and set in combination with rust prevention and waterproof provided at the end, and one end of a joint nut is connected to the round separator, and the other end of the joint nut is connected to the other end of the joint nut. One end of the joint bolt is connected, and the other end of the joint bolt is connected to the opposite side of the anti-rust / waterproof pre-filled side of the shaft foot , and the entire surface of the joint nut and the joint bolt is connected. In addition, the entire surface of the metal part of the rust / waterproof pre-filled buried concrete is subjected to rust prevention treatment, and the joint nut and the rust / proof In the center of the tipping buried Con, respectively, the cut-off wall provided so as not to leak, the shaft portion which is not threaded is formed in the joint bolt, waterproofing ring of water-swelling rubber, and the joint nut It is mounted on the side surface of the rust-proof / waterproof pre-filled con without attaching and fitting .
Here, the side surface of the water stop ring on the mold side is preferably recessed like the surface of the concave lens .
Moreover, the said rust prevention and waterproofing front-end buried controller may be provided with a mortar condenser in a non-detachable state on the outer periphery of the metal part.

According to the present invention, the concrete form holding and tightening member that is also integrated and set for rust prevention and waterproofing is applied to the entire surface of the joint nut and the joint bolt, and the entire surface of the metal part of the anticorrosion and waterproof pre-filled buried component. In addition to applying rust prevention treatment, a water stop wall is provided in the center of the joint nut and anti-rust / waterproof pre-filled buried concrete to prevent water leakage. Nuts, joint bolts, and rust-proof / waterproof pre-filled metal parts can be prevented from rusting as much as possible.
In addition, when a water stop ring made of water expansion rubber is attached to the joint bolt, rain water from the concrete wall is composed of two steps of the water stop wall and the water stop ring from the concrete wall to the round separator. So that the round separator can be prevented from rusting.

It is a partial cross-section partial cross section front view which shows the structural example (example which uses a water stop ring) of the concrete mold holding | maintenance fastening member which is combined with the rust prevention and waterproofing of Embodiment 1 which concerns on this invention, and was integrally set. (A)-(e) is explanatory drawing which shows the usage method of the concrete formwork holding | maintenance fastening member which is combined with rust prevention and waterproofing of Embodiment 1 shown in FIG. It is a figure which shows the side in a cross section. It is a partial cross-section partial cross section front view which shows the structural example (example which does not use a water stop ring) of the concrete formwork holding | maintenance fastening member which combined the rust prevention and waterproofing of Embodiment 1 which concerns on this invention, and was integrally set. (A)-(e) is explanatory drawing which shows the usage method of the concrete formwork holding | maintenance fastening member which was combined and set integrally as rust prevention and waterproofing of Embodiment 1 shown in FIG. It is a figure which shows the side in a cross section. It is a partial cross-section partial cross section front view which shows the structural example (example which uses a water stop ring) of the concrete formwork holding | maintenance fastening member which is combined and set as rust prevention and waterproofing of Embodiment 2 which concerns on this invention. (A)-(e) is explanatory drawing which shows the usage method of the concrete formwork holding | maintenance fastening member which was combined and set integrally as rust prevention and waterproofing of Embodiment 2 shown in FIG. It is a figure which shows the side in a cross section. It is a partial cross-section partial cross section front view which shows the structural example (example which does not use a water stop ring) of the concrete formwork holding | maintenance fastening member which is combined with rust prevention and waterproofing of Embodiment 2 which concerns on this invention, and was integrally set. (A)-(e) is explanatory drawing which shows the usage method of the concrete formwork holding | maintenance fastening member which is combined with rust prevention and waterproofing of Embodiment 2 shown in FIG. It is a figure which shows the side in a cross section.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments 1 and 2 of a concrete mold holding and tightening member that is combined with rust and waterproof according to the present invention and is integrally set will be described in detail below with reference to the accompanying drawings. Note that the embodiment described below is merely an example of the present invention including its dimensions and the like, and the present invention is not limited to the following embodiment, and can be appropriately changed within the scope of the technical idea of the present invention. It is.

Embodiment 1 FIG.
As shown in FIG. 2 to be described later, the concrete formwork holding and tightening member 1 that is combined with rust prevention and waterproofing according to the first embodiment of the present invention and that is integrally set has a pair of formwork 3 and 3 at a predetermined interval. In order to hold them apart from each other, they are provided on a male screw portion 2a formed on at least one end of the round separator 2, and as shown in FIG. It has a bolt 12, a rust-proof / waterproof front-end buried capacitor 13, a shaft foot 15 that is a formwork support member, and a water stop ring 16. It should be noted that the concrete mold holding and tightening member 1 which is combined with rust prevention and waterproofing according to the first embodiment of the present invention and is integrally set may be provided on both sides of the round separator 2 or only at one end. It is also possible to provide a first embedded capacitor such as a normal P capacitor at the other end.

  The joint nut 11 is provided with a separator-side female screw portion 11a into which the male screw portion 2a of the round separator 2 is screwed to an end portion of the round separator side 2, and a flange portion 11b, and a joint bolt 12 on the opposite side thereof. A joint bolt side female screw portion 11c into which one male screw portion 12a of the joint bolt 12 is screwed is provided at the end portion on the side. A first water blocking wall 11d is provided between the separator-side female screw portion 11a and the joint bolt-side female screw portion 11c. Note that the entire surface of the joint nut 11, that is, the outer surface thereof, the inner walls (inner surfaces) of the female screw portions 11 a and 11 c, and both side surfaces of the first water blocking wall 11 d are, for example, 5 μm thick with zinc, tin, and A rust-proof surface coating treatment is performed with an inorganic coating film containing a plurality of kinds of aluminum and having excellent adhesion. The round separator 2 is not subjected to rust prevention treatment such as such rust prevention surface coating treatment.

  The joint bolt 12 is provided with male screw portions 12a and 12b on both sides thereof, while the shaft portion 12c not formed with a screw thread has a disk shape made of water-expandable rubber such as water-expandable elastomer. A water stop ring 16 is attached. Note that the surface of the joint bolt 12 is also subjected to a rust-proof surface coating with an inorganic coating having excellent adhesion containing a plurality of types of metals such as zinc, tin, and aluminum, similarly to the surface of the joint nut 11.

  The side surface of the disk-shaped water stop ring 16 on the mold 3 side, that is, the wall surface side of the concrete 4 is formed in a shape that is recessed like the surface of the concave lens and prevents rainwater and the like that the wall surface side of the concrete 4 enters. Yes.

  The rust-proof / waterproof pre-filled condenser 13 is formed by attaching a reusable nylon flange 14 to the same metal part as the joint nut 11, and the male screw of the joint bolt 12 at the end of the metal part on the side of the joint bolt 12. The joint bolt side female thread part 12a and the collar part 12b are provided to which the part 2b is screwed, and one male thread part 15a of the shaft leg 15 is provided at the opposite end of the shaft leg 15 side. A shaft foot side female screw portion 12c to be screwed is provided. A second water blocking wall 12d is provided between the joint bolt side female screw portion 12a and the shaft foot side female screw portion 12c. It should be noted that the joint nut 11 is also provided on the entire surface of the metal portion of the rust / waterproof pre-filled buried capacitor 13, that is, the outer surface thereof, the inner walls (inner surfaces) of the female screw portions 12a and 12c, and both side surfaces of the second water blocking wall 12d. Similarly to the surface of the joint bolt 12, a rust-proof surface coating treatment is performed with an inorganic coating film containing a plurality of types of metals such as zinc, tin, and aluminum and having excellent adhesion.

  The joint bolt 12 may be fixed to either the joint nut 11 or the rust / waterproof pre-filled buried condenser 13.

  The shaft foot 15 is a member for connecting the formwork fitting 5 shown in FIG.

<Usage Method of Concrete Formwork Holding Fastening Member 1 of Embodiment 1>
FIGS. 2A to 2E are explanatory views showing a method for using the concrete formwork holding and tightening member 1 which is combined with rust prevention and waterproofing according to the first embodiment and is integrally set. It is a figure which shows the side in a cross section.

  First, as shown in FIG. 2 (a), at least one end of a round separator 2 having a predetermined length, a joint nut 11, a joint bolt 12 with a water stop ring 16, and a rust / waterproof pre-embedded con 13 And the formwork 3 and 3 are installed so that the concrete formwork holding and tightening member 1 connected to the shaft foot 15 is opposed to the concrete formwork fastening metal fitting 5 at a predetermined interval. Pour concrete 4 between 3 and cure for a certain period of time.

  When the concrete 4 between the molds 3 and 3 is hardened, the mold fitting 5 is removed from the shaft foot 15 and the mold 3 is removed as shown in FIG.

  Next, as shown in FIG. 2 (c), the shaft foot 15 and the nylon flange 14 are removed from the hardened concrete 4 using an electric drill 6 or the like, and as shown in FIG. As shown in FIG. 2E, the cap 7 is fitted into a recess that is a trace of the nylon flange 14 on the wall surface.

  Therefore, in the concrete formwork holding and tightening member 1 of the first embodiment, a joint nut 11, a joint bolt 12 with a water stop ring 16, and a rust prevention / It will be in the state by which the waterproof front-end buried control 13 was buried.

  Therefore, according to the concrete form holding and tightening member 1 which is combined with rust prevention and waterproofing according to the first embodiment and is integrally set, the entire surface of the joint nut 11 and the joint bolt 12 and the rust prevention and waterproof pre-filled buried condenser 13 are provided. Since the entire surface of the metal portion has been subjected to rust prevention treatment, as shown in FIG. 1 and the like, the entire surface of the concrete mold holding and fastening member 1 between the wall surface of the concrete 4 and the round separator 2 is subjected to rust prevention treatment. .

  As a result, it is possible to prevent as much as possible the occurrence of rust on the joint nut 11, the joint bolt 12, and the metal portion of the rust-proof / waterproof pre-filled condenser 13 due to rain water or the like that permeates from the wall surface of the concrete 4.

  Further, at the center of the joint nut 11 and the rust / waterproof pre-filled buried condenser 13, the first water blocking wall 11d and the female threaded portions 11a and 11c and the female threaded portions 13a and 13c provided on both sides are prevented from leaking, respectively. Since the second water blocking wall 13d is provided, the waterproof processing is firmly performed on the outside (surface) and inside of the concrete mold holding and tightening member 1 between the wall surface of the concrete 4 and the round separator 2, Rust of the round separator 2 can be prevented as much as possible.

  In the first embodiment of the concrete form holding and tightening member 1, since the water stop ring 16 made of water expansion rubber is attached to the joint bolt 12, the first water stop is provided between the wall surface of the concrete 4 and the round separator 2. Infiltration of rain water and the like from the wall surface of the concrete 4 can be prevented by the three stages of the water stop ring 16 as well as the two stages of the water stop walls 11d and 13d including the wall 11d and the second water stop wall 13d. Rust can be prevented.

  Further, in Embodiment 1 concrete mold holding and tightening member 1, a pair of molds are connected to a joint nut 11, a joint bolt 12, and a rust-proof / waterproof pre-embedded con 13 at at least one end of the round separator 2. 3 and 3 are arranged so that the cover thickness of the concrete 4 can be secured by the amount of the joint bolt 12 and the joint nut 11 or the rust-proof / waterproof pre-filled buried condenser 13 as compared with the prior art. It is possible to prevent rusting of the reinforcing bars (not shown) inside the concrete 4 due to permeation of rain water etc. from the wall surface of the concrete 4 and to replace the round separator 2 with a joint bolt 12 having a different length. By doing so, it is possible to flexibly cope with the thickness of the concrete 4.

  For example, when the length of the joint nut 11 and the rust-proof / waterproof pre-filled con 13 is 25 mm and the length of the joint bolt 12 is 320 mm, only the joint nut 11 or the rust-proof / water-proof pre-filled con 13 is used. By using the joint nut 11 and the rust / waterproof pre-filled buried capacitor 13 and the joint bolt 12, the cover thickness of the concrete 4 from the wall surface of the concrete 4 to the round separator 2 is, for example, about 60 mm to 360 mm. It becomes possible to respond flexibly.

  In the present invention, the water stop ring 16 is not essential, and as shown in FIG. 3, the embodiment 1 concrete mold holding and tightening member 1 that does not use the water stop ring 16 can also be configured. By using the embodiment 1 concrete formwork holding and tightening member 1 not using the ring 16 as shown in FIGS. 4A to 4E, the embodiment 1 concrete formwork holding and tightening member 1 in the slightly round separator 2 can be used. Rust can be prevented as much as possible.

Embodiment 2. FIG.
Next, a concrete formwork holding and tightening member 1 "which is combined with rust prevention and waterproofing according to the second embodiment of the present invention and is integrally set will be described. About the structure similar to the member 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 5 is a partial cross-sectional front view showing a configuration example of a concrete formwork holding and tightening member 1 ″ according to the second embodiment of the present invention.

  As shown in FIG. 5, the second embodiment of the concrete formwork holding and tightening member 1 ″ has the same joint nut 11, joint bolt 12, shaft foot 15 as the concrete formwork holding and tightening member 1 of the first embodiment. In addition to the rust-proof and waterproof pre-filled con 13 in which the nylon flange 14 is attached to the metal part used in the concrete formwork holding and tightening member 1 of the first embodiment, the metal part An embedded rust-proof / waterproof pre-embedded con 13 "to which a mortar con 14" is fixed.

  Therefore, in the concrete formwork holding and tightening member 1 ″ according to the second embodiment, the concrete 4 hardened by using the electric drill 6 or the like as shown in FIG. 6C in the explanatory diagrams of FIGS. 6A to 6E. Only the shaft foot 15 is removed, and the antirust / waterproof pre-filled con 13 "is left embedded in the hardened concrete 4 as shown in FIG. 6 (d).

  However, as shown in FIG. 6 (d), since the holes and the like to which the shaft foot 15 is connected remain even in the case of the anti-rust / waterproof pre-embedded con 13 "embedded in the concrete 4, FIG. As shown, cap 7 "or the like is fitted and covered.

  Therefore, according to the concrete mold holding / clamping member 1 ”which is combined with rust prevention and waterproofing according to the second embodiment and is integrally set, in the hardened concrete 4 as in the concrete mold holding / clamping member 1 according to the first embodiment. Since the entire surface of the joint nut 11 and the joint bolt 12 embedded in the metal and the entire surface of the metal portion of the anticorrosive / waterproof pre-embedded con 13 "have been subjected to anticorrosion treatment, from the wall surface of the concrete 4 to the round separator 2 The entire surface of the concrete mold holding and fastening member 1 "between them is rust-proofed, and the metal parts of the joint nut 11 and the joint bolt 12 and the rust-proof / waterproof pre-filled con 13" by rain water or the like that permeates from the wall surface of the concrete 4 It is possible to prevent the occurrence of rust in the etc. as much as possible.

  Further, at the center of the joint nut 11 and the rust / waterproof pre-filled buried condenser 13 ″, the first water blocking wall 11d is provided so that the female screw portions 11a, 11c and the female screw portions 13a, 13c provided on both sides do not leak. Since the second water blocking wall 13d is provided and the water blocking ring 16 is provided on the joint bolt 12, the outer side (surface) of the concrete mold holding and fastening member 1 "between the wall surface of the concrete 4 and the round separator 2 is provided. It will be securely waterproof on the inside, and rusting of the round separator 2 can be prevented as much as possible.

  In addition, according to the concrete mold holding and tightening member 1 ″ of the second embodiment, the cover thickness of the concrete 4 is ensured by the amount of the joint bolt 12 and the joint nut 11 or the rust / waterproof embedded embedded con 13 ″ as compared with the conventional case. In this respect as well, it is possible to prevent rusting of the reinforcing bars (not shown) inside the concrete 4 due to infiltration of rain water and the like from the wall surface of the concrete 4, and long without replacing the round separator 2. By exchanging the joint bolts 12 having different thicknesses, the thickness of the concrete 4 can be flexibly dealt with.

  In the present invention, the water stop ring 16 is not indispensable. Therefore, as shown in FIG. 7, the embodiment 2 concrete formwork holding and tightening member 1 ″ that does not use the water stop ring 16 can also be configured. By using the second embodiment of the concrete mold holding and tightening member 1 ″ not using the water stop ring 16 as shown in FIGS. 8A to 8E, the second embodiment of the concrete mold holding and tightening member 1 ″ is slightly Rust generation in the round separator 2 can be prevented as much as possible.

  In the above description, the joint nut 11, the joint bolt 12, and the metal portions of the anti-rust / waterproof pre-filled buried capacitor 13, 13 ″ have been described as being subjected to the anti-rust treatment by the anti-rust surface coating treatment. However, the present invention is not limited to this, and the rust prevention treatment may be performed by using a stainless steel material instead of the rust prevention surface coating treatment.

1, 1 "concrete mold holding and tightening member 11 joint nut 12 joint bolt 13, 13" anti-rust / waterproof pre-filled 14 nylon flange 14 "mortar con 15 shaft foot 16 water stop ring 2 round separator 3 mold 4 concrete 5 Formwork Tightening Bracket 6 Electric Drill 7, 7 "Cap

Claims (3)

A concrete formwork holding and tightening member that is further integrated and set to serve as rust prevention and waterproofing at the end of at least one of the round separators to hold the formwork apart by a predetermined interval,
Wherein for the round separator connected to one end of the joint nut, while connecting one end of the hinge pin to the other end of the joint nut, pivot foot at rustproof and waterproof tipping embedding Con to the other end of the hinge pin Connect the opposite side to the side where
The entire surface of the joint nut and the joint bolt and the entire surface of the metal portion of the anti-rust / waterproof pre-filled con are subjected to anti-rust treatment, and at the center of the joint nut and the anti-rust / waterproof pre-filled con Provide water barriers to prevent water leakage ,
A water-stop ring made of water-expanded rubber is attached to the shaft portion of the joint bolt where no thread is formed, without being attached and fitted to the side surface of the joint nut and the rust-proof / waterproof embedded buried con A concrete formwork holding and tightening member that is combined with rust and water resistance, and is also integrated. In the concrete formwork holding and tightening member that is further integrated and combined with rust prevention and waterproofing according to claim 1,
A concrete formwork holding and tightening member that is integrated and set for both rust prevention and waterproofing, wherein a side surface of the water stop ring on the formwork side is recessed like the surface of a concave lens . In the concrete form holding / clamping member which is further integrally set to serve as rust prevention and waterproofing according to claim 1 or 2,
The rust-proof / waterproof pre-embedded concrete is a concrete form holding / clamping member that is rust-proof / waterproof and is integrally set.

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