KR102198442B1 - A SPACE-BAR For Concrete Forms - Google Patents

Abstract

The present invention relates to a spacing tool for a formwork, but formed of a plate-like member, and a pin coupling hole 21 is formed in order to fix by inserting a fixing pin on the outer surface of the inner formwork, and a cutting groove 22 is formed at both ends thereof. In the formwork space holding device having an inner fixing part 2 formed and an outer fixing part 4 inserted through a through hole of the outer formwork and coupled to a cone-shaped fastening part, the end of the outer fixing part 4 There is provided an outer fixing member 5 formed of a plastic material to block contact with rainwater and prevent corrosion so that rust does not leak to the outside of the building, and the outer fixing member 5 comprises a cylindrical body 51 Including, the outer fixing member (4) has both sides open in the radial direction so that the portion 42 with a reduced width is inserted, and grooves 53 extending in the longitudinal direction are formed, and the outer fixing member 5 In a state in which the portion 42 of which the width of the outer fixing part 4 is reduced is inserted into the groove 53 of the through hole 56 and the outer fixing part 4 formed on the upper part of the outer fixing member 5 By inserting the through hole 46 formed in the fixing pin 55, the outer fixing member 5 is coupled to the outer fixing part 4, thereby providing an external fixing member of plastic material at the outer end. The cone-shaped fastening part of the formwork and screwing together enable efficient and efficient formwork installation, and the outer fixing member is formed of plastic material to prevent rust from leaking to the outside. It works.

Description

Spacing zone for formwork {A SPACE-BAR For Concrete Forms}

The present invention relates to a spacing retainer for a formwork, and in particular, the end of the spacing retainer remaining buried in the concrete wall of a building after curing of concrete is excellent. It relates to a formwork gap maintenance device having an improved joint structure so that corrosion or rust does not leak to the exterior wall of a building.

When constructing a building by pouring concrete, the formwork panels must be installed inside and outside at a certain interval. In order to keep the gap between the formwork panels on both sides, tie bolts or tie bars are used as a so-called sepata. use.

Conventional tie bolts for maintaining the gap between the formwork are domestic Laid-Open Patent Publication No. 10-2009-0091895 (published on August 31, 2009) and Domestic Utility Model Publication No. 20-0402917 (2005.12.01) .Registration) is formed in a rod shape as in the formwork space retaining tie bolts, and a male thread is formed, inserted through the through hole of the outer formwork, and is integrally formed in a plate shape with the outer fixing part fastened to the cone-shaped fastening part. The cutting grooves are formed on both side surfaces, and a pin coupling hole is formed in the center portion thereof, and the fixing pin is formed on the outer surface of the inner formwork, and the inner fixing part is configured to be inserted into the pin coupling hole.

Another type of tie bolt was formed by joining a bolt having a male thread on the outer fixing part of the other end with an inner fixing part formed with a pin coupling hole in the center while a cutting groove was formed on both sides of one end.

However, the above-described conventional spacing tool is a manufacturing process for forming an inner fixing part in the shape of a flat plate from a bar member or forming an external fixing member having a male screw for fastening to a cone-shaped fastening part as an outer fixing part from a flat plate-like member. This complex, time-consuming and costly problem has raised the unit price.

In addition, in the conventional tie bolt, the groove of the concrete wall from which the cone-shaped fastening part is removed is usually filled with silicone for waterproofing, but as time passes, a gap is generated between the groove of the silicone and the concrete wall, and rainwater penetrates into the concrete. There was a problem that the tie bolts were corroded by flowing along the remaining tie bolts in a buried state, rust leaked to the exterior wall of the building, spoiling the aesthetics, and increasing the maintenance cost for removing rust.

Domestic Registration Utility Model Publication No. 20-0402917 (registered on December 1, 2005) Korean Patent Publication No. 10-2009-0091895 (published on August 31, 2009)

An object of the present invention is to solve the problems of the conventional tie bolts described above, but formed of a plate-like member, the inner end is formed with a pin coupling hole for fixing by inserting a fixing pin on the outer surface of the inner formwork, and the cutting groove is on both sides. It is formed with an inner fixing part formed in the outer end, and an outer fixing member is provided at the outer end, which is inserted through the through hole of the outer formwork to be easily detachably coupled with the cone-shaped fastening part, and it is improved to prevent corrosion of the gap retainer remaining on the outer wall of the building. It is to provide a gap-holding device for the formed formwork.

Another object of the present invention is to provide an outer fixing member at an outer end that is conveniently coupled with a cone-shaped fastening part as a plate-shaped member, and the outer fixing member prevents corrosion by blocking contact with rainwater flowing from the outer wall of a building and prevents rust. To prevent leakage to the outside of the building, the cup part is integrally formed to provide a space for the formwork.

In order to achieve the above object, in order to achieve the above object, the spacing for a formwork according to an embodiment of the present invention is formed of a plate-like member, but in order to fix by inserting a fixing pin on the outer surface of the inner formwork In the spacing tool for a formwork having an inner fixing part in which a pin coupling hole is formed and a cutting groove is formed at both ends, and an outer fixing part which is inserted through a through hole of the outer formwork and coupled to a cone-shaped fastening part,

A portion with a reduced width is formed at the end of the outer fixing portion, and an outer fixing member formed of plastic material to prevent rust from leaking to the outside of the building by blocking contact with rainwater and preventing corrosion at the reduced width Are combined,

The outer fixing member includes a cylindrical body having a male screw formed on an outer circumferential surface to be screwed with a cone-shaped fastening part, and the body has both sides open in the radial direction so that a portion with a reduced width of the outer fixing part is inserted into the upper end. A groove extending downward in the longitudinal direction is formed,

In a state in which a portion with a reduced width of the outer fixing part is inserted into the groove of the outer fixing member, the through hole formed on the upper part of the external fixing member and the through hole formed in the external fixing part are inserted with a fixing pin, so that the outer fixing member is placed outside. It is configured to be coupled to the fixed portion.

At both ends of the portion of which the width of the outer fixing member is reduced, inserted into the groove of the outer fixing member, teeth are formed in the same shape as the male screws on the outer circumferential surface of the main body of the outer fixing member, together with the male screws on the outer circumferential surface of the body It is screwed with the fastening part.

The space holding device for a formwork according to the present invention is provided with an outer fixing member made of plastic at the outer end, and is simply and firmly coupled to the cone-shaped fastener of the outer formwork by screwing, so that the formwork installation work can be efficiently performed, and the outer fixing Since the member is formed of a plastic material, there is an effect of preventing rust from leaking to the outside because it does not rust.

1 is a schematic exploded perspective view of an outer fixing member and a space maintenance tool according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a state in which the outer fixing member of FIG. 1 is coupled to a coupling portion of the space holder.
Figure 3 is a cross-sectional view showing a state in which the outer fixing member provided in the spacing of Figure 1 is coupled to the cone-shaped fastening portion fixed to the outside of the formwork.
FIG. 4 is an exploded perspective view of the outer fixing member and the lower end of the gap maintaining member so as to accommodate the lower portion of the gap maintaining member by forming a cup part at the top as a first modification of the outer fixing member of FIG. 1.
5 is a cross-sectional view of a state in which the outer fixing member of the first modified example of FIG. 4 is coupled to the lower end of the gap maintaining unit.
FIG. 6 is an exploded perspective view of an outer fixing member and a space holder of the second modification of FIG. 4.
7 is a perspective view of a state in which the outer fixing member of the second modified example of FIG. 6 is coupled to the space holder.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of a spacing tool for a formwork according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of a spacing tool for a formwork according to the present invention.

In Figures 1 to 3, the spacing tool 1 such as a tie bolt according to the first embodiment of the present invention is formed of a plate-like member, and the inner end is an inner fixing part 2 on the outer side of the inner formwork. In order to insert and fix the tie pin, a pin coupling hole 21 is formed and a notch-shaped cutting groove 22 is formed, and the outer end is inserted through the through hole of the outer mold as the outer fixing part 4 to the outside. An outer fixing member 5 formed of a plastic material that is disposed to protrude to the outside of the form and is provided on the outer fixing part 4 so as to be coupled to the cone-shaped fastening part installed on the outside of the outer form, and is screwed to be easily detachable from the cone-shaped fastening part. Is provided.

The outer fixing member 5 coupled to the outer fixing part 4 includes a cylindrical body 51 having a male screw 52 formed on an outer circumferential surface to be screwed with a cone-shaped fastening part, and the outer fixing part 4 It includes a groove 53 formed by opening both sides in the radial direction of the main body and extending in the vertical direction so that the portion 42 having a reduced width is inserted and fixed.

In the portion 42 of which the width of the outer fixing member 4 is coupled to the outer fixing member 5 having a male screw formed on the outer circumferential surface is reduced, the teeth 41 have the same shape as the male screw of the outer fixing member 5 at both ends. ) Is formed, and the engaging protrusion 43 protrudes at the lower end of the portion 42 whose width is reduced, and when the outer fixing member 5 is coupled, it is embedded in the bottom of the groove 53 of the outer fixing member and is firmly coupled. .

It is preferable that the outer fixing member 5 is formed of a rigid plastic material such as engineering plastics so that a male screw 52 is formed on the outer circumferential surface.

In addition, the outer fixing member 5 is coupled as shown in FIG. 2 by inserting through the through hole 46 of the outer fixing part 4 with a fixing pin 55 through a through hole 56 formed at the top. Alternatively, alternatively, the groove 53 of the outer fixing member 5 and the lower end of the outer fixing part 4 and the reduced width portion 42 may be combined by applying an adhesive. In addition, in the illustrated embodiment, only one through hole 56 is formed, and only one through hole 46 is formed in the outer fixing part 4 corresponding thereto, but two or more may be formed as necessary. Will be easy to understand.

An example of the use of the space maintainer 1 according to the embodiment of the present invention shown in FIG. 2 will be described with reference to FIG. 3.

The spacing tool of the present invention is distributed or supplied to the construction site in a state in which the outer fixing member 5 is coupled to the end of the outer fixing part 4, and is used to maintain a constant distance between the inner formwork and the outer formwork. The outer fixing member 5 is screwed to the cone-shaped fastening portion 77 provided on the fixing means 76 installed on the outside of the external formwork 75.

That is, in a state in which the inner fixing part 2 is disposed outside the inner formwork 70, the gap holder 1 is inserted so as to penetrate through the hole formed in the inner formwork, and at this time, the outer fixing part ( After screwing the outer fixing member 5 provided in 4) to the cone-shaped fastening part 77 provided on the fixing means 76 installed on the outside of the outer formwork 75, the pin formed in the center of the inner fixing part 2 Through the hole 21, the inner formwork 70 and the outer formwork 70 are fixed to the inner formwork 70 with a fixing pin 71, and a gap maintenance hole is installed, even under pressure caused by the pouring of concrete in the space between the inner formwork and the outer formwork. The spacing of the formwork 75 is kept constant.

After the concrete poured between the inner formwork 70 and the outer formwork 75 is cured, the fixing pin 71 is removed, the inner formwork 70 is removed, and then the inner fixed part 2 is hit with a hammer. Thus, it is cut in the cutting groove 22 formed in a notch shape on both sides thereof, and the fixing means 76 installed in the outer formwork 75 is disassembled to separate the cone-shaped fastening portion 77 from the outer fixing member 5. At this time, since rainwater from the outer surface of the concrete does not come into contact with the end of the spacing retainer by the outer fixing member 5, rust does not occur in the spacing retainer, and rust does not leak to the outer surface of the concrete as in the prior art.

4 and 5 show a first modified example of the outer fixing member 105 to which the space holding device 1 according to the present invention is coupled to the outer fixing part 4.

The outer fixing member 105 of the modified example includes a cylindrical body 151 in order to be screwed with a cone-shaped fastening part, a male screw 152 formed on the outer circumferential surface thereof, and an outer fixing part 4 of the gap holder 1. The configuration including the groove 153 formed by opening both sides in the radial direction of the main body and extending in the vertical direction so that the portion 42 with a reduced width is inserted and fixed is the same as in the above-described embodiment, and the main body 151 There is a difference in that the cup portion 160 of a concave cylindrical shape is integrally formed in a shape protruding downward with a diameter that is larger than the diameter of the main body.

The cup portion 160 includes a bottom 161 having a diameter extending radially outwardly from the main body at the upper end of the main body 151, and a side wall protruding concentrically downward with respect to the main body at an outer end of the bottom 161 ( 165), and in the bottom 161, a portion 42 having a reduced width of the outer fixing portion 4 of the gap holder 1 is inserted and fixed in a radial direction of the main body from the lower side of the cup 160 Both sides are opened and a groove 153 formed by extending vertically downward from the main body 151 is formed.

As a result, the gap maintaining unit 1 is inserted into the groove 153 formed so that the width of the outer fixing part 4 is reduced 42 extends from the bottom of the cup part 160 to the main body 151, and the outer fixing member It is fixed to and coupled to 105, and at this time, jaws 45 formed on both sides of the portion 42 whose width is reduced in the outer fixing portion 4 are disposed on the bottom of the cup portion 160. In addition, a through hole 166 is formed in the side wall 165 of the cup part 160, and a fixing pin 168 is inserted and fixed through the through hole 46 in the lower part of the outer fixing part 4 as well. desirable.

In this way, the outer fixing member 105 having the cup portion 160 formed thereon is coupled to the space holder 1, and the inner fixing part 2 is disposed outside the inner formwork 70 as described with reference to FIG. 3. After inserting and arranging the gap holder (1) to penetrate through the hole formed in the inner formwork, the inner formwork (70) is used as the fixing pin (71) through the pin coupling hole (21) formed in the center of the inner fixing part (2). ) And fixed to install a gap maintenance hole, so that the gap between the inner formwork 70 and the outer formwork 75 is kept constant, and concrete is placed between the inner formwork 70 and the outer formwork 75, and cured In this case, water of the concrete does not leak to the outer surface of the outer formwork 75 by the cup portion 160 formed on the outer fixing member 105. Then, after the concrete is cured, the fixing pin 71 is removed, the inner formwork 70 is removed, and then the inner fixing part 2 is hit with a hammer to cut grooves 22 formed in a notch shape on both sides thereof. ), the process of dismantling the fixing means 76 installed on the external formwork 75 is as described in FIG. 3.

The shape of the cup part 160 formed in a cylindrical shape provided on the outer fixing member 105 of the first modified example shown in FIGS. 4 and 5 is the cup part 160 ′ formed in a square box shape as in the second modified example shown in FIG. 6. In this case, a through hole 166 is formed in the cup part 160 ′ so as to firmly couple the cup part 160 ′ and the part 42 with a reduced width under the outer fixing member 105, and fixed to the outside. A through hole 46 is also formed in the portion 42 of which the width of the member 105 is reduced, and a pin 168 is inserted to be coupled thereto.

In addition, the configuration of forming the through holes 166 and 46 of the cup portion 160 ′ and the portion 42 having a reduced width and inserting a pin to fasten it is as in the first modified example shown in FIGS. 4 and 5. It will be easily understood that the outer fixing member 5 may be configured to form a through hole in the portion 42 having a reduced width and a cup portion of the outer fixing member 5 and fasten it with a pin.

In the embodiment shown in FIG. 6, the through hole 166 of the cup part 160 ′ and the through hole 46 of the outer fixing part 4 corresponding thereto are shown one by one, but two or more pins are formed as necessary. It will be easily understood that it may be made to be tightly coupled by inserting.

In addition, on the inner surfaces of both side portions of the cup portion 160 ′, the engaging projections 169 are formed to protrude inward, respectively, and the fixing portion 4 immediately above the portion 42 whose width of the gap holder 1 is reduced. ), locking grooves 170 may be formed on both sides.

As a result, as shown in the cross-sectional view of FIG. 7, the portion 42 having the reduced width of the spacing member 1 is inserted into the groove 153 of the outer fixing member 105 to reduce the width 42 When the fixing part 4 on the upper side of) is inserted into the cup part 160 ′, the engaging protrusions 169 on both sides of the cup part 160 ′ are engaged with the locking grooves 170 formed on both sides of the fixing part 4. As a result, the cup portion of the outer fixing member 5 described above and the portion 42 having a reduced width can be fastened and fixed with a pin.

According to the present invention, the inflow of rainwater along the spacing zone from the concrete wall is blocked by the cup part formed on the upper end of the outer fixing member to minimize rust, as well as water permeating into the concrete wall due to a number of rainwater. Even if rust occurs in the holding unit, the rust material flowing through the gap maintenance unit is blocked by the cup portions 160 and 160' so that rust does not leak outside the wall, so there is a problem that rust stains the exterior wall of the building and spoils the appearance. Is prevented.

The present invention can be used to effectively prevent the inflow of rainwater or leaking of rust to the outside by forming an outer fixing member at low cost in a spacing tool for maintaining the gap between the inner formwork and the outer formwork. have.

1: Gap maintenance 2: Inner fixed part
4: outer fixing part 5,105: outer fixing member
21: pin coupling hole 22: cutting groove
41: tooth portion 42: (reduced width) portion
43: bite 51: main body
52: male thread 53: groove
151: main body 153: groove
160,160'; Cup part 161; floor
165: side wall

Claims (2)

delete It is formed of a plate-like member, and a pin coupling hole (21) is formed for fixing by inserting a fixing pin on the outer surface of the inner formwork, and the inner fixing part (2) having a cutting groove (22) formed at both ends of the outer formwork, It includes an outer fixing part 4 inserted through the through hole and coupled to the cone-shaped fastening part,
A portion 42 with a reduced width is formed at the end of the outer fixing portion 4, and a portion 42 with a reduced width is formed to block contact with rainwater and prevent corrosion so that rust does not leak to the outside of the building. In the outer fixing member (5) formed of a plastic material so as to be coupled to the spacing for the formwork,
The outer fixing member 5 includes a cylindrical body 51 having a male screw 52 formed on an outer circumferential surface to be screwed with a cone-shaped fastening part, and the body 51 has the width of the outer fixing part 4 Both sides are opened in the radial direction so that the reduced portion 42 is inserted, and grooves 53 extending downward in the longitudinal direction from the top are formed,
The through hole 56 formed in the upper portion of the outer fixing member 5 in the state where the portion 42 of which the width of the outer fixing part 4 is reduced is inserted into the groove 53 of the outer fixing member 5 And the through hole 46 formed in the outer fixing part 4 is inserted into the fixing pin 55 so that the outer fixing member 5 is coupled to the external fixing part 4,
Both ends of the portion 42 of which the width of the outer fixing member 5 is reduced 42 inserted into the groove 53 of the outer fixing member 5 is provided with male screws on the outer circumferential surface of the main body 51 of the outer fixing member 5 The toothed portion 41 is formed in the same shape, and the outer fixing member 5 of the main body 51 of the outer circumferential surface of the outer circumferential surface of the outer circumferential surface of the outer circumferential surface of the male screw 52 and the cone-shaped fastening portion and screw-fastened, characterized in that for forming a space maintenance tool.

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