KR102175946B1 - Space maintain tool for steel reinforcing - Google Patents

Abstract

An objective of the present invention is to provide a gap maintaining apparatus for reinforcing bars which can be selectively used on an inner wall and an outer wall of a building to improve work efficiency, can be standardized to precisely maintain a gap of reinforcing bar, can prevent a mounted reinforcing bar from being easily removed, and can be simply installed to reduce construction periods and labor. According to the present invention, the gap maintaining apparatus for reinforcing bars comprises: a body longitudinally extended in a horizontal direction; a pair of reinforcing bar insertion clips connected to the body, and provided with an opening part formed on a side opposite to the side coupled to the body and allowing a horizontally arranged reinforcing bar to be inserted therein; an additional reinforcing bar insertion clip which is arranged on one side of the reinforcing bar insertion clips, and has an additional opening formed to allow a horizontally arranged reinforcing bar to be inserted therein; and a pair of support wings provided on both longitudinal ends of the body to be tightly attached to a pair of inner surfaces of a form.

Description

Space maintain tool for steel reinforcing}

The present invention relates to a rebar spacing retainer, and more particularly, to a reinforcing bar spacing retainer that can be selectively used on the inner and outer walls of a building as a single retaining tool and can be standardized so that simple and precise construction can be achieved. will be.

In general, when the wall reinforcement of a concrete structure is an abdominal reinforcement, a circular spacer is installed to secure a width fixing reinforcement for maintaining the spacing of the reinforcement and a cover thickness of the reinforcement.

In order to reduce labor costs and materials such as reinforcement by installing these width-fixing reinforcing bars and circular spacers, respectively, a spacer and a support member made of a reinforcing bar for width fixing and a circular spacer have been developed.

However, since the covering thickness of the outer wall of the reinforced concrete building is 40 mm and the covering thickness of the inner wall is 30 mm, which are different from each other, conventionally, a spacer and a brace were separately manufactured and used for the outer wall and the inner wall.

However, there is a problem in that the cost is unnecessarily increased when the spacer and the brace are provided for each of the external and internal walls, and the operator divides it into a spacer and a brace for an external wall and a spacer and a brace for the internal wall. There is a cumbersome problem to be installed.

Registered Utility Model Publication No. 20-0395694

The present invention has been devised to solve the problems of the prior art, and can be selectively used on the inner wall and the outer wall of a building, so that the work rate can be improved and standardization is possible, so that the spacing of the wall reinforcement can be precisely maintained. The purpose of this is to provide a rebar spacing tool that can reduce the construction period and labor because the installed rebar is not easily removed and the construction is simple.

The rebar spacing holder according to the present invention includes a body extending in a horizontal direction, a pair of rebar insertion clips connected to the body and formed on opposite sides of the body and an opening into which rebar arranged horizontally can be inserted, An additional reinforcing bar insertion clip disposed on one side of the reinforcing bar insertion clip and having an additional opening through which reinforcing bars arranged horizontally can be inserted, a pair provided at both ends of the body in the longitudinal direction, and in close contact with the inner side of the pair of formwork Including the support wing of,
At both sides of the width direction of the opening of the reinforcing bar insertion clip and the additional reinforcing bar insertion clip, a locking end extending obliquely in a direction into which the reinforcing bar is inserted and the end contacting the outer surface of the reinforcing bar inserted into the reinforcing bar insertion clip is provided,
The locking end is made of a material having ductility so as to be bent by the reinforcing bar inserted into the reinforcing bar insertion clip,
The support wing is composed of a pressing frame convexly curved toward the inner side of the formwork, and a plurality of support frames connecting the pressing frame to the body,
The support frame is arranged obliquely in a direction crossing the longitudinal direction of the body,
A plurality of pressing protrusions are formed on a surface of the pressing frame facing the inner surface of the formwork,
The body is formed on the outer surface of a plurality of horizontal frames connecting the pair of support wings, a plurality of vertical frames connecting the plurality of horizontal frames, and a horizontal frame positioned between the pair of rebar insertion clips Includes reinforcing ribs that become
A support portion disposed between the horizontal frames and formed in an oval shape to elastically support the horizontal frame,
It is formed in the inner space of the support, and includes a reinforcing part formed in a curved or elliptical shape to elastically support the support,
It includes an additional reinforcing part for reinforcing the body, and the additional reinforcing part includes a frame fixed between the horizontal frames, a plurality of reinforcing bars formed to cross each other in the inner space of the frame, and formed in a wavy or serrated shape And, coupled to the body and the other body, comprising a first and second coupling members spaced apart from each other in a vertical direction, and a secondary support including an elastic member formed in a curved shape to connect the coupling member and elastically deformable,
The first coupling member is formed in a'b' cross-sectional shape, the second coupling member is formed in a'b' cross-sectional shape,
The horizontal frame is provided with an insertion groove in which the insertion protrusion is respectively inserted and fixed, and the first coupling member and the second coupling member are male and female coupled to the horizontal frame,
It includes a buffer portion disposed between the body, the buffer portion,
A base cylinder disposed between the body and the body and having an open upper surface, a coil spring disposed in the inner space of the base cylinder, and inserted to be elevating in the upper opening of the base cylinder, and positioned at the top in contact with the coil spring It includes an elevating part for elastically supporting the body, and a dispersing part formed in the lower side of the base cylinder and supported by the body positioned at the lower side, and formed in a'ㅗ' cross-sectional shape.

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According to the reinforcing bar spacing tool according to the present invention, a pair of reinforcing bar insertion clips or one reinforcing bar insertion clip and one additional reinforcing bar insertion clip can be selectively applied depending on the inner wall and the outer wall to be constructed, so that one product As it can be applied to both the inner and outer walls, the work rate can be improved. This eliminates the need to provide a reinforcing bar spacing tool for the inner wall and a rebar spacing tool for the exterior wall as in the prior art. There is an effect that can significantly shorten the time.

In addition, standardization is possible, so that the spacing of the wall reinforcement can be accurately maintained, the installed reinforcement is not easily removed, and the construction is simple, so there is an effect of saving the construction period and labor.

1 is a plan view of a reinforcement spacing maintenance tool according to the present invention.
2 and 3 are a perspective view and a rear perspective view of a reinforcing bar spacing holder according to the present invention.
Figure 4 is a vertical cross-sectional view showing a structure in which the reinforcement spacing holder according to the present invention is mounted on the reinforcement of the inner wall.
Figure 5 is a vertical cross-sectional view showing a structure in which the reinforcement spacing maintenance tool according to the present invention is mounted on the reinforcement of the external wall.
6 is a vertical cross-sectional view showing a state in which a support, a reinforcement, a steel reinforcement, an auxiliary support, and a buffer is applied to the reinforcing bar spacing maintenance tool according to the present invention.
7 is a cross-sectional view showing a buffer applied to the reinforcement spacing maintenance tool according to the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and are common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. The same reference numerals are assigned to similar parts throughout the specification.

1 is a plan view of a reinforcing bar spacing holder according to the present invention, FIGS. 2 and 3 are a perspective view and a rear perspective view of a reinforcing bar spacing tool according to the present invention, and FIG. 4 is a reinforcing bar of the inner wall. It is a vertical cross-sectional view showing a structure to be mounted on, and Figure 5 is a vertical cross-sectional view showing a structure in which the reinforcement spacing holder according to the present invention is mounted on the reinforcement of the external wall.

The rebar spacing holding device 100 according to the present invention is mounted on a pair of reinforcing bars installed to be spaced apart by a predetermined distance, and is intended to maintain a constant spacing between the pair of reinforcing bars, and it is easy to manufacture with the same standard, and fastening The method is very simple, so the construction is convenient, and it is characterized in that it can be selectively applied to both the inner wall and the outer wall.

That is, the reinforcing bar spacing holder 100 according to the present invention includes a body 110 extending in a horizontal direction and an opening 121 that is coupled to the lower side of the body 110 and into which reinforcing bars arranged horizontally can be inserted. ) Is connected to a pair of reinforcing bar insertion clips 120 formed on opposite sides of the body 110, and an additional opening through which reinforcing bars arranged horizontally can be inserted, connected to one side of the reinforcing bar insertion clip 120 It includes a formed additional reinforcing reinforcing clip and a pair of support wings 130 provided at both ends of the body 110 in the longitudinal direction and in close contact with the inner surface of the pair of formwork 10.

The body 110 is a component for securing a separation distance between two reinforcing bars inserted into a pair of reinforcing bar insertion clips 120, and the support wing 130 has a reinforcing bar cover thickness (between the reinforcing bars and the formwork 10). As a component for securing the separation distance), it is preferable that the length of the body 110 and the length of the support wing 130 are appropriately selected according to the standard of the wall to be constructed.

When a pair of first reinforcing bars 21 are arranged horizontally and a pair of second reinforcing bars 22 are arranged vertically between a pair of formwork 10 spaced apart from each other, the pair of second reinforcing bars 22 1 When each of the reinforcing bars 21 is inserted into a pair of reinforcing bar insertion clips 120, the ends of the support blades 130 are in close contact with the inner surface of the formwork 10 as shown in FIGS. 4 and 5, The spacing of the pair of second reinforcing bars 22 and the reinforcing bar cover thickness may always be kept constant.

In addition, the reinforcing bar spacing tool 100 according to the present invention is not bound and fixed to the first reinforcing bar 21 by a separate binding line, but so that the first reinforcing bar 21 is inserted into the reinforcing bar insertion clip 120 Since the body 110 is coupled to the first reinforcing bar 21 only by holding and pressing the body 110 by hand, there is also an advantage that the construction is very simple. That is, if the rebar spacing tool 100 according to the present invention is used, not only can the construction period be significantly shortened, but also workers with low skill can easily fix the rebar, so that the construction defect rate is very low.

The reinforcing bar insertion clip 120 is made of a synthetic resin having elasticity so that both sides of the opening 121 can be opened when the first reinforcing bar 21 is inserted into the inner side, and the reinforcing bar spacing holder 100 according to the present invention Since the reinforcing bar insertion clip 120 as well as the body 110 and the support wing 130 are made of synthetic resin, production is completed by a single injection process of synthetic resin. As described above, the rebar spacing holder 100 according to the present invention is highly productive because all production is completed through a single injection, and since the specifications of each part are manufactured very precisely, the spacing of a pair of rebars can be maintained very accurately. There is an advantage that there is.

On the other hand, when the body 110 and the support wing 130 are made to have very low elasticity, that is, when the strength is very high so that it does not bend by an external force, a pair of support wings as shown in FIGS. 4 and 5 When (130) is in close contact with the inner surface of the two adjacent formwork (10), the pressing force between the formwork (10) and the support wing (130) is lowered. In this way, when the pressing force between the formwork 10 and the support wing 130 is lowered, the reinforcing bar spacing holder 100 according to the present invention may be removed by the concrete pouring pressure. Of course, if the entire length of the reinforcing bar spacing holder 100 according to the present invention is completely matched with a pair of formwork 10, the reinforcing bar spacing tool 100 according to the present invention is a pair of formwork ( 10) It can be firmly coupled between, but in the process of constructing the formwork 10, a slight error may occur in the separation distance between the pair of formwork 10, so the total length of the reinforcing bar spacing holder 100 There is a limit to precisely matching the separation distance between the pair of formwork 10.

Therefore, the reinforcement spacing holder 100 according to the present invention may be configured such that the support wing 130 in close contact with the formwork 10 can have elasticity in the longitudinal direction of the body 110.

That is, the support wing 130 is a compression frame 131 convexly curved toward the inner side of the formwork 10, and a plurality of support frames connecting the compression frame 131 to the body 110 Consisting of 132, the support frame 132 may be arranged to be inclined in a direction crossing the longitudinal direction of the body 110.

Since the compression frame 131 and the support frame 132 are made of synthetic resin having a certain level of elasticity, they can be bent when an external force is applied in the longitudinal direction of the body 110, and accordingly, the support wing 130 It can be compressed to a certain level in the length direction of (110).

Therefore, even if the total length of the reinforcing bar spacing holder 100 is slightly larger than the spacing of the pair of formwork 10, the reinforcing bar spacing tool 100 may be press-fit between the pair of formwork 10.

At this time, the support wing 130 is compressed in the longitudinal direction of the body 110, and elastically adheres to the inner surface of the formwork 10 by a restoring elastic force.

On the other hand, when the outer surface of the pressing frame 131 is formed in a smooth curved surface, the pressing frame 131 can easily slide on the inner surface of the formwork 10. Therefore, it is preferable that a plurality of pressing protrusions 133 are formed on a surface of the pressing frame 131 facing the inner surface of the formwork 10. At this time, the shape and number of the pressing protrusions 133 may be variously changed according to various conditions, such as the use and material of the reinforcement spacing holder 100 according to the present invention, and a detailed description thereof will be omitted.

As described above, the reinforcing bar spacing maintenance tool 100 according to the present invention can be stably fixed between the pair of formwork 10 even if a slight error occurs in the spaced distance of the pair of formwork 10, so that the concrete pouring pressure There is an advantage that the possibility of being removed from the second reinforcing bar 22 is very low.

In addition, the body 110 connects the plurality of horizontal frames 111 connecting the pair of support wings 130 and the plurality of horizontal frames 111 so that the compression strength in the longitudinal direction relative to the weight is very high. It is composed of a plurality of vertical frames (112). At this time, when a large compressive force is applied to the body 110 in the longitudinal direction, the horizontal frame 111 may be bent. In particular, there is a concern that the body 110 is bent in a direction in which the two first reinforcing bars 21 inserted into the pair of reinforcing bar insertion clips 120 are close. Accordingly, reinforcing ribs 140 may be additionally provided on the outer surface of the horizontal frame 111 positioned between the pair of reinforcing bars insertion clips 120.

The reinforcing bar spacing holder 100 according to the present invention may be provided with locking ends on both sides of the opening 121 in the width direction so that the reinforcing bar inserted into the reinforcing bar insertion clip 120 does not easily come out. The locking end extends obliquely inclined along the direction in which the reinforcing bar is inserted, and when the reinforcing bar is completely inserted into the reinforcing bar insertion clip 120, the end of the locking end contacts the outer surface of the reinforcing bar.

When the locking end is formed in the reinforcing bar insertion clip 120 in this way, the reinforcing bar inserted into the reinforcing bar insertion clip 120 is caught by the locking end and is not easily withdrawn. At this time, when the locking end is made of a material with high hardness, the locking end is interfered with when the reinforcing bar is inserted into the reinforcing bar insertion clip 120 so that the reinforcing bar cannot be easily inserted into the reinforcing bar insertion clip 120. The stage is preferably made of a material having ductility so that it can be easily bent by the reinforcing bar inserted into the reinforcing bar insertion clip 120.

On the other hand, as shown in Figure 1, the engaging end is, the outer engaging end 122 contacting the side facing the opening 121 (lower side in Figure 1) of the reinforcement, and the inner engaging end contacting the left and right sides of the reinforcing bar ( 123). However, the number and position of the locking ends may be variously changed according to the designer's selection.

In addition, in a state in which the reinforcing bar is inserted into the reinforcing bar insertion clip 120, the reinforcing bar spacing holder 100 according to the present invention does not slide in the horizontal direction (more specifically, in the longitudinal direction of the first reinforcing bar 21), but is fixed. In order to maintain the state, a rubber layer (not shown) having a higher coefficient of friction than the reinforcement insertion clip 120 may be provided on the inner surface of the reinforcement insertion clip 120.

In this way, the rubber layer provided on the inner surface of the reinforcing bar insertion clip 120 is in close contact with the outer surface of the reinforcing bar when the reinforcing bar is inserted into the reinforcing bar insertion clip 120, and a very large frictional force is generated between the reinforcing bar and the rubber layer. Accordingly, it is possible to obtain the effect that the reinforcing bar spacing holding device 100 according to the present invention does not slide in the longitudinal direction of the second reinforcing bar 22.

At this time, the rubber layer may be made of any type of rubber, such as synthetic rubber or natural rubber, as long as the sliding friction with the reinforcing bar can be secured when it comes into contact with the outer surface of the reinforcing bar.

On the other hand, the additional reinforcement insertion clip 150 is connected to one side of any one of the pair of reinforcement insertion clips 120 and the end of the horizontal frame 111.

Therefore, the additional reinforcement insertion clip 150 is located between the reinforcement insertion clip 120.

At this time, the additional reinforcement insertion clip 150 is integrally manufactured with the body 110, the reinforcement insertion clip 120, and the support wing 130 by injection of synthetic resin.

The additional reinforcing bar insertion clip 150 is formed with an additional opening 151 into which reinforcing bars arranged in the horizontal direction can be inserted.

Additional locking ends may be provided on both sides of the additional opening 151 in the width direction.

The additional locking end extends obliquely inclined along the direction in which the reinforcing bar is inserted, and when the reinforcing bar is completely inserted into the additional reinforcing bar insertion clip 150, the end of the additional locking end contacts the outer surface of the reinforcing bar.

At this time, the additional reinforcing bar insertion clip 150 may also open both sides of the additional opening 151 when the first reinforcing bar 21 is inserted inward.

If the above-described pair of reinforcing bar insertion clips 120 are used when forming the inner wall of a building, when using the exterior wall of a building, one reinforcing bar insertion clip 120 and an additional reinforcing bar insertion clip 150 are used.

That is, as shown in FIG. 4, when constructing an inner wall having a reinforcing bar cover thickness of about 3 cm, a pair of reinforcing bar insertion clips 120 may be fixed to the first reinforcing bar 21, as shown in FIG. Likewise, when constructing an external wall having a reinforcing bar cover thickness of 4cm, one reinforcing bar insertion clip 120 and an additional reinforcing bar insertion clip 150 may be fixed to the first reinforcing bar 21.

Therefore, according to the present invention, a pair of reinforcing bar insertion clips 120 or one reinforcing bar insertion clip 120 and one additional reinforcing bar insertion clip 150 can be selectively applied depending on the inner wall and the outer wall. There is an advantage in that the rebar spacing of the retainer 100 can be applied to both the inner wall and the outer wall, thereby improving the work rate.

Furthermore, when the present invention is applied to a construction site, there is an advantage that it is not necessary to provide a reinforcement spacing retainer for an inner wall and a reinforcement spacing retainer for an outer wall, respectively, as in the related art, so that the cost and time required for constructing a building can be significantly reduced. .

Next, another embodiment of the reinforcing bar spacing maintenance tool according to the present invention will be described with reference to FIGS. 6 and 7.

6 is a vertical cross-sectional view showing a state in which the support, reinforcement, reinforcement, auxiliary support, and buffer parts are applied to the reinforcing bar spacing holder according to the present invention, and FIG. 7 is a buffer part applied to the rebar spacing holder according to the present invention. It is a sectional view shown.

In this embodiment, in addition to the above-described configurations, the supporting portion 160 and the reinforcing portion 170 for elastically supporting the horizontal frame 111, the additional reinforcing portion 180 for reinforcing the body 110, spaced apart in the vertical direction. It further includes an auxiliary support unit 190 and a buffer unit 200 for elastically supporting the pair of bodies 110a and 110b.

First, the support unit 160 is made of a synthetic resin having a certain level of elasticity, and is formed in an elliptical shape with a hollow so as to be elastically compressed or expanded.

Accordingly, when an external force is applied in the vertical direction, the support unit 160 may be compressed to a certain level in the corresponding direction.

And, even if the vertical length of the support unit 160 is slightly larger than the distance between the horizontal frame 111 located at the top and the horizontal frame 111 located at the bottom, the support unit 160 is between a pair of horizontal frames 111 Can be press-fit.

In addition, the support unit 160 is compressible, and elastically adheres to the horizontal frames 111 by elastic restoring force.

Therefore, when concrete is poured between the formwork 10, when the pouring pressure or load of concrete is applied to the body 110, in particular, the horizontal frame 111, the entire support 160 is elastically compressed and the concrete is poured. By alleviating the pressure or load, the entire reinforcing bar spacing holder 100 is not removed from the first reinforcing bar or does not flow, and can be stably settled.

Meanwhile, the reinforcing part 170 is installed in the inner space of the support part 160.

One or a plurality of reinforcing parts 170 may be installed, and when one is installed, it is disposed in the center of the support part 160, and when a plurality of reinforcing parts 170 are installed, they are disposed to be spaced apart from each other.

In addition, FIG. 6 shows an example in which two reinforcing parts 170 are applied and disposed on the left and right sides of the support part 160, respectively.

The reinforcing part 170 may be formed in a curved or elliptical shape to elastically support the support part 160, and the drawing shows an example formed in an approximately "C" cross-sectional shape.

This reinforcing part 170 is elastically compressed together with the support part 160 when the pouring pressure or load of concrete is applied to the body 110, especially the horizontal frame 111 when concrete is poured between the formwork 10. As it relieves the pouring pressure or load of the concrete, the entire reinforcing bar spacing holder 100 can be stably settled without being removed or flowing from the first reinforcing bar 21.

On the other hand, the additional reinforcement part 180 is formed to have the same cross-section as the space (S) between the horizontal frames 111 and the vertical frames 112, so that they cross each other in the inner space of the frame 181 It may include a plurality of reinforcing bars 182 to be formed.

The frame 181 is formed in a size capable of being accommodated in a space (S) of the horizontal frames 111 and the vertical frames 112 and then accommodated in a force-fitting manner so as not to flow or fall out easily.

In addition, the reinforcing bar 182 may be formed in a corrugated shape or a sawtooth shape so as to have excellent rigidity.

In addition, although not shown in the drawings, the reinforcing bar 182 may be provided with one or more reinforcing ribs capable of improving rigidity.

As the reinforcing bars 182 evenly distribute and support the pouring pressure or load of the concrete, the entire reinforcing bar spacing holder 100 can be stably settled without being removed or flowing from the first reinforcing bar.

On the other hand, the auxiliary support portion 190 is formed in an approximately "a" cross-sectional shape, the first coupling member 191 coupled to the bottom surface of the horizontal frame 111 of the body (110a) located on the upper surface, approximately "b "It is formed in a cross-sectional shape, and the bottom surface is coupled to the upper surface of the horizontal frame 111 located at the bottom, and the second coupling member 192 and the first coupling member 191 vertically spaced from the first coupling member 191 ) And the second coupling member 192 and may include an elastic member 193 formed in a curved shape so as to be elastically deformable in response to a pouring pressure or load of concrete.

At this time, the first coupling member 191, the second coupling member 192, and the elastic member 193 may be integrally manufactured by injection of synthetic resin.

And, although not shown in the drawing, insertion protrusions (not shown) are formed on the upper surface of the first coupling member 191 and the bottom surface of the second coupling member 192, respectively, and the insertion protrusion is inserted into the horizontal frame 111 The insertion groove (not shown) to be fixed may be formed. Thus, the first coupling member 191 and the second coupling member 192 may be male and female coupled to the horizontal frame 111.

The auxiliary support 190 is made of synthetic resin having a certain level of elasticity, and the elastic member 193 may be bent when an external force is applied in the longitudinal direction, and thus may be compressed to a certain level in the vertical direction.

Therefore, although the vertical length of the auxiliary support 190 is slightly larger than the distance between the upper body 110a and the lower body 110b, the auxiliary support 190 is a pair of bodies 110a and 110b It can be press-fitted through the space, whereby the insertion protrusion can be easily inserted into the insertion groove.

In addition, the auxiliary support portion 190 is compressed in the vertical longitudinal direction, and elastically adheres between the upper body 110a and the lower body 110b by the elastic restoring force.

Therefore, when pouring concrete between the formwork 10, when the pouring pressure or load of concrete is applied to the bodies 110a and 110b, the entire auxiliary support 190 is elastically compressed to reduce the pouring pressure or load of the concrete. By alleviating, the entire reinforcing bar spacing holder 100 can be stably settled without being removed or flowing from the first reinforcing bar.

On the other hand, the buffer unit 200 may include a base cylinder 201, a coil spring 202, an elevating unit 203, and a dispersion unit 204.

In this case, the buffer unit 200 may be applied in plural, and may be disposed in a form intersecting with the auxiliary support unit 190.

The base barrel 201 is vertically disposed between the upper body 110a and the lower body 110b, and is formed in a cylindrical shape with an open top surface.

The base barrel 201 may have a structure divided into two so that the coil spring 202 and the lifting unit 203 can be easily accommodated, and a protrusion (not shown) is formed in one of them, and a groove ( Not shown) is formed and can be combined with male and female.

The coil spring 202 is vertically disposed in the inner space of the base barrel 201 to elastically support the elevating portion 203.

The lifting part 203 elastically supports the upper body 110a and is formed to have an approximately "I" cross-sectional shape.

The elevating part 203 is accommodated in the inner space of the base barrel 201 and seated on the upper surface of the coil spring 202, and the upper surface is in contact with the bottom surface of the horizontal frame 111.

The dispersion unit 204 may be formed to have an approximately "ㅗ" cross-sectional shape, and the upper end is formed on the bottom surface of the base tube 201 to be seated on the upper surface of the horizontal frame 111 of the lower body 110b.

Although not shown in the drawing, an insertion protrusion (not shown) is formed on the bottom of the dispersion unit 204, and an insertion groove (not shown) in which the insertion protrusion is inserted and fixed to the horizontal frame 111 may be formed. Accordingly, the distribution unit 204 and the horizontal frame 111 may be male and female.

As the lifting unit 203 descends while compressing the coil spring 202 when an external force is applied, the total length of the buffer unit 200 may be temporarily reduced.

Therefore, the buffer unit 200 may be press-fit between the pair of bodies (110a, 110b) even if the vertical length is slightly larger than the gap between the upper body (110a) and the lower body (110b), due to this, the lifting part 203 ) Is elastically attached to the bottom of the horizontal frame 111 by the coil spring 202.

When the concrete is poured between the formwork 10, the cushioning part 200 descends while compressing the coil spring 202 when the pouring pressure or load of concrete is applied to the body 110a. It buffers, and the pouring pressure and load are distributed to the distribution unit 204 so that the entire rebar spacing holder 100 is not removed from the first reinforcing bar or flowed, so that it can be stably settled.

Further, if the first and second coupling members 191 and 192 and the elastic member 193 of the above-described auxiliary support unit 190 act integrally with the pouring pressure or load of concrete, the buffer unit 200 is the elevating unit 203 ) And the coil spring 202 only act, so it can independently cope with the pouring pressure and load of relatively small concrete, and for the pouring pressure and load of concrete above a certain value, the auxiliary support part and the buffer part 200 work together to It is possible to more reliably secure the structural stability of the spacing tool 100.

Those of ordinary skill in the art to which the present invention pertains will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the scope of the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. Must be interpreted.

10: formwork 21: first rebar
22: second reinforcing bar 100: rebar spacing maintenance tool
110: body 111: horizontal frame
112: vertical frame 120: rebar insertion clip
121: opening 122: outer engaging end
123: inner engagement end 130: support wing
131: compression frame 132: support frame
133: pressure protrusion 140: reinforcement
150: additional rebar insertion clip 151: additional opening
160: support 170: reinforcement
180: additional reinforcement part 181: frame
182: reinforcing bar 190: auxiliary support
191: first coupling member 192: second coupling member
193: elastic member 200: buffer part
201: base cylinder 202: coil spring
203: lifting unit 204: dispersion unit

Claims (7)

A body extending long in the horizontal direction,
A pair of reinforcing bar insertion clips connected to the body and formed on opposite sides of the body with an opening into which reinforcing bars arranged horizontally can be inserted,
An additional reinforcing bar insertion clip disposed on one side of the reinforcing bar insertion clip and having an additional opening into which reinforcing bars arranged horizontally can be inserted,
It is provided at both ends of the body in the longitudinal direction, and includes a pair of support wings in close contact with the inner side of the pair of molds,
At both sides of the width direction of the opening of the reinforcing bar insertion clip and the additional reinforcing bar insertion clip, a locking end extending obliquely in a direction into which the reinforcing bar is inserted and the end contacting the outer surface of the reinforcing bar inserted into the reinforcing bar insertion clip is provided,
The locking end is made of a material having ductility so as to be bent by the reinforcing bar inserted into the reinforcing bar insertion clip,
The support wing is composed of a pressing frame convexly curved toward the inner side of the formwork, and a plurality of support frames connecting the pressing frame to the body,
The support frame is arranged obliquely in a direction crossing the longitudinal direction of the body,
A plurality of pressing protrusions are formed on a surface of the pressing frame facing the inner surface of the formwork,
The body is formed on the outer surface of a plurality of horizontal frames connecting the pair of support wings, a plurality of vertical frames connecting the plurality of horizontal frames, and a horizontal frame positioned between the pair of rebar insertion clips Includes reinforcing ribs that become
A support portion disposed between the horizontal frames and formed in an oval shape to elastically support the horizontal frame,
It is formed in the inner space of the support, and includes a reinforcing part formed in a curved or elliptical shape to elastically support the support,
Including an additional reinforcing part for reinforcing the body,
The additional reinforcement part,
A frame fixed between the horizontal frames, a plurality of reinforcing bars formed to cross each other in the inner space of the frame, and formed in a wavy or serrated shape,
The body and the other body, the first and second coupling members that are spaced apart from each other in a vertical direction, and a secondary support including an elastic member formed in a curved shape to connect the coupling member and elastically deformable,
The first coupling member is formed in a'L'-shaped cross-sectional shape,
The second coupling member is formed in a'b' cross-sectional shape,
Insertion protrusions are formed on the upper surface of the first coupling member and the bottom surface of the second coupling member, respectively,
The horizontal frame is provided with an insertion groove in which the insertion protrusion is respectively inserted and fixed, and the first coupling member and the second coupling member are male and female coupled to the horizontal frame,
It includes a buffer portion disposed between the body,
The buffer unit,
A base cylinder disposed between the body and the body and having an open top surface,
A coil spring disposed in the inner space of the base cylinder,
An elevating part that is inserted to be elevating in the upper opening of the base cylinder and elastically supporting the body positioned at the top by contacting the coil spring,
Reinforcing bar spacing holding unit including a dispersion unit formed in a lower side of the base cylinder and supported by a body positioned at the lower side, and formed in a'ㅗ' cross-sectional shape.
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