KR101715746B1 - Spacer assembly for slab structure integrated a plurality of the spacers - Google Patents

Abstract

Disclosed is a spacer assembly for a slab structure in which a plurality of spacers are integrated. The present invention provides a spacer assembly for a slab structure in which the plurality of spacers are integrated, comprising a plurality of spacer units in which a plurality of spacers are formed integrally, wherein the spacer units are fastened with one or more other spacer units in an insertion manner, such that there is no need to additionally fix a spacer in a construction site, thereby reducing manpower, working hours, and materials.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spacer assembly for a slab structure,

The present invention relates to a spacer assembly of a slab structure, and more particularly, to a spacer assembly of a slab structure, and more particularly, to a spacer assembly of a slab structure, which comprises a plurality of spacers as an integrated unit, To a spacer assembly for a slab structure in which the spacer is integrated.

Generally, a floor slab is used between a floor and a floor in the construction of a middle-low-rise building or a high-rise building. In this case, reinforcing bars, wire, wire and concrete are mainly used.

Generally, the compressive strength of concrete is very high, but when the bending moment is applied, the concrete does not receive the tensile force, so it is replaced by the reinforcing bars. In order to compensate for this, a TRUSS structure, usually made by weaving iron wire inside the slab, is built in. At this time, the compressive strength of concrete and the tensile strength of reinforcing bar are calculated considering the floor load, fixed load, earthquake load, and wind load of the building.

When the slab is poured to form a slab, the slab is buried in the slab, thereby enhancing the bending and tensile strength and preventing cracks in the concrete.

However, although the slab structure used in the construction of high - rise buildings has various advantages, the amount of reinforcing bar has been excessively required due to the large weight due to the concrete. In other words, there is a vicious cycle that results in an increase in the rebar amount due to the increase of the self weight of the concrete structure.

Especially, recently, due to increase of oil price and international commodity price, the unit price of reinforcing steel and concrete material increases, leading to an increase in construction cost and lowering of profitability.

In addition, carbon dioxide (CO2) generated in the production of reinforcing bars and concrete has been subject to various environmental regulations.

Accordingly, conventionally, a slab building structure using a spacer capable of reducing concrete consumption and suppressing carbon dioxide emission, which is made of a hollow space inside the slab structure, is provided. This is as shown in FIG. 1 below.

1 is a view showing a conventional slab structure using a spacer.

Referring to FIG. 1, a conventional slab structure using a spacer includes a spacer 2 and a spacer insert 5 inside a slab layer.

Here, the spacers 2 are arranged on the upper surface of the reinforcing bars and / or the steel wires 3 connected and fixed in the horizontal and vertical directions in the support plate 4 connected horizontally between the columns in the construction process of the slab structure , Concrete 1 is installed after the reinforcing bars and / or wires 3 are installed on the upper surface of the aligned spacers 2 again.

The spacer insert mold 5 holds and fixes spacers of several spacers 2 aligned with the support plate 4. Here, the spacer fitting frame 5 applies a force to the spacer 2 on the upper side and the front and rear sides of the spacer 2 while the linear wire extending to the upper surface of the spacer 2 and the inverted U- ).

Therefore, the concrete 1 is installed in the several spacers 2 fixed to the inside of the slab structure by the spacer insert mold 5, so that the amount of concrete 1 can be reduced and the amount of carbon dioxide discharged can be reduced.

However, since the conventional slab structure using a spacer is an independent structure in which the structures of the spacers are not connected to each other, a device such as a spacer insert must be additionally used to fix the slab structure to the support plate, There is a problem that the cost is increased.

Korean Patent Laid-Open No. 10-2013-0131866 (Dec. 14, 2013) Japanese Patent Application Laid-Open No. 2000-240207 (Sep. 2000, 2000)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spacer assembly of a slab structure capable of reducing time and materials for installation and installation of a spacer in a slab structure.

The present invention includes the following embodiments in order to achieve the above object.

A preferred embodiment of a spacer assembly of a slab structure according to the present invention comprises a plurality of spacer units in which a plurality of spacers each having an upper portion and a lower portion which are divided from each other are integrated and the spacer units extend from the outer surface of the spacer (A) consisting of a first coupling bar, a second coupling bar extending from the outer surface of the spacer and being inserted into the first coupling bar extended from the other spacer unit, and at least one inclined surface sequentially formed on the upper surface, A fourth coupling bar extending from an outer surface of the spacer and having at least one inverted slope so as to conform to an inclined surface sequentially formed in a third coupling bar extending from the other spacer unit, And a fixing ring fastened to the outer surface of the fourth bar and fixed by an elastic force, (B). The upper part has an upper surface opened, an upper support column extending downward to form an empty space on the inner side, and an upper cover sealing the open upper surface of the upper support column And a lower cover for supporting a load applied in the gravity direction by being coupled with the upper support column in a hollow space extending upward from the lower portion and a lower cover for closing the opened lower surface of the lower support column, The third coupling bar may include at least one fastening groove that is recessed in the inclined surface, and the fourth coupling bar may include at least one fastening protrusion protruding from the opposite end face and inserted into the fastening groove.

delete

The present invention has the effect of integrating a plurality of spacers and combining the integrated spacer units with each other, so that it is not necessary to separately fix the spacers at the construction site, thereby reducing manpower, work time and materials.

1 is a view showing a spacer of a conventional slab structure.
2 is a perspective view showing a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
3 is an exploded perspective view showing a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
4 is a cross-sectional view of a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
5 is a perspective view illustrating an example of fastening a coupling bar in a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
6 is a perspective view showing another embodiment of a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
7 is a perspective view showing an assembling process of another embodiment of a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.
8 is a side view showing another embodiment of a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood that the present invention is not intended to be limited to any particular embodiment and that all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention for connecting and / or fixing structures extending in different directions Should be understood as being appropriate.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a perspective view showing a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated, FIG. 3 is an exploded perspective view, and FIG. 4 is a sectional view.

2 to 4, a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated includes a plurality of spacers 100, 100 ', 100' ', 100' '' (10, 10 '). Here, the spacer units 10 and 10 'have a plurality of interconnecting and separable structures.

The spacer units 10 and 10 'have a plurality of spacers 100, 100', 100 '', 100 '' 'and a spacer 100, 100', 100 ' At least one fixing bar 200 for interconnecting the other spacer units 10 and 10 ', and a connecting part 300 for being fastened to the other spacer units 10 and 10'.

The spacers 100, 100 ', 100' ', 100' '' have a structure in which the upper portion 110 and the lower portion 120 are detachable, forming an empty space inward. For example, the spacers 100, 100 ', 100' ', 100' '' include upper and lower portions 110 and 120, respectively, separated from the upper and lower sides.

The upper part 110 includes a first body 113 forming a semicircular outer surface, an upper support column 114 extending downward from the inner surface of the first body 113, A cover 111, and a plurality of first ventilation holes 112 forming a pore of the upper portion 110.

The first body 113 is semicircular and forms an outer surface to form the upper surfaces of the spacers 100, 100 ', 100' ', 100' ''. Here, the outer surface of the first body 113 is formed with the fixing bar 200 and the connecting portion 300, respectively.

A plurality of first vent holes 112 are formed over the entire upper portion 110 including the upper cover 111 and are formed for air circulation of the slab structure and drainage of the inflow water.

The upper support column 114 is opened on the upper surface and extends downward from the inner surface of the first main body 113 and supports a load of concrete applied in the gravity direction by forming an empty space on the inner side. At this time, the upper support column 114 is formed with a coupling protrusion 114a or an inward coupling hole 114b protruding downward from the end. For example, the upper support column 114 of the first spacer 100 is formed with the coupling protrusion 114a, and the upper support column 114 of the second spacer 100 'forms the coupling hole 114b . The coupling protrusions 114a and the coupling holes 114b may be selectively determined depending on the positions of the coupling protrusions 124a and the coupling holes 124b formed in the lower supporting column 124 described later.

In addition, the upper support post 114c may further include a drain hole 114c for draining the water introduced through the first vent hole 112. [ Preferably, the drainage hole 114c is formed to pass through a bottom surface of the drainage hole 114c which is in close contact with the lower support column 124 for drainage of water.

The upper cover 111 seals the open outer surface of the first body 113 where the upper support posts 114 extend. At this time, the upper cover 111 may be fastened to the first body 113 in an interference fit manner or may have a fitting structure using protrusions and grooves. For example, the fitting structure is provided with projections (not shown) on the lower surface of the upper cover 111, and is projected from the upper cover 111 at the upper outer peripheral surface of the upper support post 114 in the first main body 113 (Not shown) can be formed so that the projections can be inserted.

The lower part 120 includes a second body 123 which is a semicircular inner surface and is fastened to the lower side of the first body 113, a lower support column 124 which extends upward from the inner surface of the second body 123, And a second vent hole 122 formed in the entire area of the bottom cover 120 or the bottom cover 121 to perform pore and drain functions.

A plurality of the second vent holes 122 are formed over the entire lower portion to drain water to the outside and function as pores of the spacer assembly together with the first vent holes 112.

For example, the slab structure can be remained by allowing water contained therein to flow into the interior of the spacer while the concrete is poured. Accordingly, the present invention discharges the moisture introduced into the inside through the first vent hole 112 and the second vent hole 122 to the outside.

The second body 123 is a semicircular inner surface and is fastened to the lower side of the first body 113. Here, the second main body 123 is an upwardly open wall surface from the outside of the bottom surface, and the top surface is opened. That is, the second body 123 is fastened to the first body 113 to form a hollow space on the inner side.

The lower support column 124 protrudes upward from the center of the second body 123 and is fastened to the end of the upper support column 114 of the first body 113 to be urged in the gravity direction together with the upper support column 114 Support the load. To this end, the lower support column 124 has a coupling protrusion 124a protruding upward from the end and an inward coupling hole 124b. The coupling protrusions 124a and the coupling holes 124b of the lower support column 124 are selectively applied along the coupling protrusions 114a and the coupling holes 114b of the upper support column 114 as described above.

For example, the engaging projection 124a of the lower supporting column 124 is inserted into the engaging hole 114b of the upper supporting column 114, and the engaging hole 124b of the lower supporting column 124 is engaged with the upper supporting column 124 The engaging projection 114a is inserted.

That is, the first and second main bodies 113 and 123 are configured such that the coupling protrusions 114a and 124a formed on the upper support pillars 114 and the lower support pillars 124 are engaged with the coupling holes 114b and 124b, .

The lower support column 124 is supported by the upper support pillars 114 so that the water drained through the drain holes 114c of the upper support pillars 114 flows into the second vent holes 122 formed in the lower cover 121. [ And may further include one or more drain holes 124c in an upper surface in close contact with the bottom surface of the column 114.

The connection part 300 includes a first coupling bar 310 and a second coupling bar 320 which extend at least one end from each of the spacers 100, 100 ', 100' ', 100' ''. Here, the first coupling bar 310 and the second coupling bar 320 may be selectively installed for each of the spacers 100, 100 ', 100' ', 100' ''.

For example, the first main body 113 of the first spacer 100 is formed with a plurality of first coupling bars 310 extending in different directions, and the second main body 123 of the first spacer 100 Are formed with a plurality of second coupling bars 320 extending in different directions. At this time, the first coupling bar 310 formed on the first main body 113 and the second coupling bar 320 formed on the second main body 123 may extend in the same direction.

Similarly, the first body 113 and the second body 123 of the second spacer 100 'are formed such that the first coupling bar 310 and the second coupling bar 320 extend in the same direction, The first main body 113 may have a second coupling bar 320 and the second main body 123 may have a first coupling bar 310. [

The positions and directions of the first coupling bar 310 and the second coupling bar 320 are not limited to the above description and drawings because they can be variously modified.

The first coupling bar 310 and the second coupling bar 320 are formed on the upper and lower sides of the respective spacers 100, 100 ', 100' ', 100' '' And the first coupling bar 310 and the second coupling bar 320 formed on the first coupling bar 310 '.

That is, the first coupling bar 310 of the first space unit 10 is fastened to the second coupling bar 320 of the second space unit 10 ', and the second coupling bar 310 of the first space unit 10 is fastened to the second coupling bar 320 of the second space unit 10' (320) is fastened to the first coupling bar (310) of the second space unit (10 '). The operation of the connection portion 300 will be described in more detail with reference to FIG.

5 is a perspective view showing a connection portion in a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated.

5, the first coupling bar 310 of the connecting part 300 according to the present invention includes a first body 311 extending from the first body 113 or the second body 123, A locking groove 312 protruding from the inner wall surface of the first body 311 and a locking hole 313 formed through the first body 311.

The first body 311 is opened at one of the upper and lower sides, and is extended from the first body 113 and the second body 123 to form both side walls. Here, the first body 311 of the first coupling bar 310 formed in the first body 113 is extended to open the lower surface as '∩', or the first coupling bar 310 formed in the second body 123 The first body 311 of the second body 310 is '∪' type and the upper face is opened and extended. The shape of the first body 311 may be selected depending on whether the first body 113 or the second body 123 is formed.

The latching groove 312 is formed to protrude inward from the outer surface of the first body 311 and protrude inward. That is, the latching groove 312 protrudes from the inner wall surface of the first body 311 and is engaged with the stepped groove 323 formed on the outer surface of the second coupling bar 320 described later.

The latching hole 313 is formed through the wall surface of the first body (for example, the latching groove 312). However, the present invention is not limited thereto and may be formed in the latching groove 312 or in a position other than the latching groove 312 as shown in the drawing.

The second coupling bar 320 includes a second body 321 extending from the first body 113 or the second body 123 and an insertion end 322 having a downward stepped portion from the second body 321, A downward stepped groove 323 at the insertion end 322, and a protruding engagement protrusion 324.

The second body 321 extends from the first body 113 or the second body 123. Here, the second body 321 of the second coupling bar 320 formed on the first body 113 is extended to open the lower surface as '∩', or the second coupling bar 320 formed on the second body 123 The second body 321 of the second body 320 is '∪' shaped and the upper face is opened and extended. The shape of the second body 321 may be determined according to the first body 113 and the second body 123.

The insertion end 322 is inserted into the first body 311 in a downward stepped manner from the outer surface of the second body 321. In other words, the insertion end 322 has a downward stepped portion at the end of the second body 321, and can also serve as a stopper that defines a distance that can be inserted while being inserted into the first body 311.

The stepped groove 323 is formed downward from the outer surface of the insertion end 322 so that the locking groove 312 protruding from the inner surface of the first coupling bar 310 can be inserted. That is, the stepped groove 323 is inserted into the latching groove 312 protruding from the inner surface of the first body 311 while the insertion end 322 is inserted into the first body 311.

The locking protrusion 324 protrudes outward from the outer surface of the insertion end (for example, the stepped groove 323) so that when the insertion end 322 is inserted into the first body 311, So that it can be fastened.

Therefore, the present invention can connect the spacer units 10 and 10 'in which a plurality of spacers 100, 100', 100 '', and 100 '' 'are integrally formed.

For example, if the operator inserts the spacer units 10, 10 'into which the plurality of spacers 100, 100', 100 ", 100 '" are integrated, the first and second coupling bars 310, 320, and then installed on the support plate 4. At this time, the support plate 4 is provided with at least one of a reinforcing bar, a reinforcing bar, and a wire for reinforcing concrete, and then a plurality of spacer units 10 and 10 'are connected to each other over the reinforcing bars.

At this time, since all the spacer units 10 and 10 'are connected to each other, there is no need to fix them separately. Therefore, the present invention can omit the means for fixing the spacer on the support plate as well as the workpiece, such as the spacer insert mold, as in the prior art.

Further, the present invention may include another embodiment for fastening between the spacer units 10 and 10 'as described above. This will be described with reference to Figs. 6 and 7 attached hereto.

FIG. 6 is a perspective view showing another embodiment of a spacer assembly for a slab structure in which a plurality of spacers according to the present invention are integrated, and FIG. 7 is a perspective view showing another embodiment of the connection part in the present invention.

6 and 7, in another embodiment of the present invention, the connection unit 300 includes a spacer unit 10 (100, 100 ', 100', 100 '' ') in which the first to fourth spacers 100, 100' ). The first to fourth spacers 100, 100 ', 100 ", 100 " ', and the third and fourth coupling bars 330 and 340 extend in different positions or in different directions, (350).

The fixing ring 350 is fastened to the outer surface of the third coupling bar 330 and the fourth coupling bar 340 so as to maintain the fastened state. At this time, the fixing ring 350 is manufactured as an elastic material and can press and fix the third coupling bar 330 and the fourth coupling bar 340 by elastic force.

The fixing ring 350 may be integrally fixed to the third coupling bar 330 and the fourth coupling bar 340 or may be detachably attached to the fourth coupling bar 340.

The third coupling bar 330 may be formed to extend from the upper side and the lower side of the first to fourth spacers 100, 100 ', 100' ', 100' '' Lt; / RTI >

More specifically, the third coupling bar 330 includes a third body 331 extending from the first body 113 or the second body 123, and a third body 331 extending from the tip of the third body 331, (Not shown).

The first coupling end 332 includes a first horizontal surface 332a forming a horizontal surface with a step with the third body 331 and at least one inclined surface 332b 332c protruding from the front of the first horizontal surface 332a, And a second horizontal surface 332d which forms a flat plane on the foremost side.

The first horizontal surface 332a is formed as a stepped surface in the third body 331 and is formed as a flat surface.

At least one of the slopes 332b and 332c is sequentially formed between the first horizontal surface 332a and the second horizontal surface 332d. That is, the inclined surfaces 332b and 332c form a wall surface erected in front of the first horizontal surface 332a and include a first inclined surface 332b formed as a downwardly inclined surface to the front side and a second inclined surface 332b formed on the upright wall surface 332b of the first inclined surface 332b And a second inclined surface 332c formed to be inclined downward toward the front side from the tip end of the second inclined surface 332c. Such inclined surfaces are formed so as to coincide with the reverse slopes 342b and 342c of the fourth coupling bar 340 described later.

The fourth coupling bar 340 is disposed on the upper side and the lower side of the first to fourth spacers 100, 100 ', 100' ', 100' '' And a second coupling end 342 that passes through the fixing ring 350 at the end of the fourth body 341 and is coupled to the first coupling end 332.

The fourth body 341 extends above and below the first to fourth spacers 100, 100 ', 100' ', 100' '', respectively. Here, the fourth body 341 extends in a hemispherical shape having a bottom surface.

The second coupling end 342 is formed as a reverse convex surface that can be fastened to the inclined surface of the first coupling end 332 at the lower surface. Therefore, the second coupling end 342 is fastened to the upper side of the first coupling end 332.

At this time, the retaining ring is first fastened to the first coupling end 332. Thus, the second coupling end 342 passes through the stationary ring 350 and is fastened to the first coupling end 332.

In detail, the second coupling end 342 has a first lower surface 342a which is formed as a flat bottom surface at the front end to be brought into close contact with the first horizontal surface 332a, and a first inclined surface 332b at the rear of the first lower surface 342a. A second reverse surface 342c coinciding with the second inclined surface 332c and a second lower surface 342d coinciding with the second horizontal surface 332d.

For example, the second coupling end 342 is fastened to the upper side of the first coupling end 332 through the retaining ring 350. The first reverse surface 342b and the second reverse surface 342c are in contact with the first inclined surface 332b and the second inclined surface 332b so that the first inclined surface 332b and the second inclined surface 332b are in contact with each other, And the second lower surface 342d is brought into close contact with the upper surface of the second horizontal surface 332d to be in close contact with the inclined surface 332c.

The fixing ring 350 is fixed to the outer surface of the third coupling bar 330 to press the fourth coupling bar 340 to be fixed to the third coupling bar 330 as described above. For this purpose, the fixing ring 350 may be made of a rubber material having an elastic force.

The present invention is also applicable to at least one of the first horizontal surface 332a and the second horizontal surface 332d, the first inclined surface 332b and the second inclined surface 332c at the first coupling end 332, The grooves 334 are formed and the first lower surface 342a and the second lower surface 342d of the second coupling end 342 and the first reverse surface 342b and the second reverse surface 342c form the fastening grooves 334 (See FIG. 8) to be inserted into the fastening protrusion 343 (see FIG. 8).

Referring to Fig. 8, the fastening protrusion 343 is formed so as to divide the first reverse-convex surface 342b into two or more and project downward at a divided space (a position corresponding to the fastening groove 334).

That is, the third coupling bar 330 and the fourth coupling bar 340 are primarily fixed by the engagement of the coupling protrusion 343 with the coupling groove 334, and the elastic force of the locking ring 350 So that it can be fixed to the second position.

The coupling groove 334 and the coupling protrusion 343 may be combined with the fixing ring 350 to strengthen the coupling force between the first coupling end 332 and the second coupling end 342.

The present invention includes the above-described structure. Hereinafter, a method of constructing a slab using a spacer assembly for a slab structure in which a plurality of spacers 100, 100 ', 100 ", 100' do.

First, the operator assemble each spacer unit 10, 10 'at the construction site or before shipping the product. That is to say, the operator can easily grasp the upper support column 114 and the lower support column 124 of the respective spacers 100, 100 ', 100' ', 100' '' included in the spacer units 10 and 10 ' The upper and lower portions 110 and 120 of the spacer units 10 and 10 'are tightened so that the coupling protrusions 114a and 124a formed at the positions of the spacer units 10 and 10' are inserted into the coupling holes 114b and 124b.

If the upper surface of the upper support column 114 and the lower surface of the lower support column 124 are opened, the operator fixes the upper cover 111 on the opened upper surface of the upper support column 114, Thereby fixing the lower cover 121 to the open bottom surface of the lower cover 124.

When the assembly of the spacer units 10 and 10 'is completed through the above-described process, the operator joins the different spacer units 10 and 10'. That is, the first and second coupling bars 310 and 320 extend from the outer surfaces of the first to fourth spacers 100, 100 ', 100' ', and 100' '' of the first spacer unit 10, Are respectively connected to a second coupling bar 320 extending from the outer surface of the first to fourth spacers 100, 100 ', 100' ', 100' '' of the second spacer unit 10 ' (310).

At this time, the first spacer unit 10 and the second spacer unit 10 'are inserted into the first coupling bar 310 while the second coupling bar 320 is inserted into the second coupling bar 310 320, and the locking protrusion 324 is fastened by the locking hole 313.

That is, the operator may connect the spacer units 10 and 10 'only by inserting the second coupling bar 320 provided in the different spacer units 10 and 10' into the inside of the first coupling bar 310 .

That is, according to the present invention, spacer units 10 and 10 'in which a plurality of spacers 100, 100', 100 '', and 100 ' Assembled and transferred to the construction site so that it can be used immediately without any work.

For example, the slab structure is provided with at least one of a reinforcing bar, a wire, and a steel wire so as to intersect, for example, in a lateral direction and a longitudinal direction, on a support plate provided between columns erected on the ground.

Then, the operator can directly carry out a subsequent process (for example, reinforcement reinforcement and concrete casting) after placing the spacer assembly transferred on the upper surface of the support plate provided with at least one of the reinforcing bars, wire and wire.

As described above, according to the present invention, the spacer units 10 and 10 'integrated with a plurality of spacers 100, 100', 100 '', and 100 ' And the cost can be reduced.

10, 10 ': spacer unit 100, 100', 100 ", 100 ''': spacer
110: upper part 111: upper cover
112: first vent hole 113: first main body
114a, 124a: coupling protrusion 114b, 124b coupling hole
120: bottom 121: bottom cover
122: second vent hole 123: second main body
200: Fixing bar 300: Connection
310: first coupling bar 311: first body
312: Retaining groove 313: Retaining groove
320: second coupling bar 321: second body
322: insertion end 323: stepped groove
324: locking protrusion 330: third coupling bar
331: third body 332: first coupling end
332a, 332d: horizontal plane 332b, 332c:
334: fastening groove 340: fourth coupling bar
341: fourth body 342: second coupling end
342a, 342d: lower surface 342b, 342c:
343: fastening protrusion 350: retaining ring

Claims (10)

And a plurality of spacer units each having a plurality of spacers each having an upper portion and a lower portion which are mutually divided,
The spacer units
(A) consisting of a first coupling bar extending from an outer surface of the spacer, a second coupling bar extending from an outer surface of the spacer and being fitted inwardly of a first coupling bar extending in another spacer unit,
A third coupling bar having at least one inclined surface sequentially formed on an upper surface thereof and extending from an outer surface of the spacer, and at least one reverse slope surface to be aligned with an inclined surface sequentially formed in a third coupling bar extending from the other spacer unit, (B) a fourth engaging bar extending from the outer surface of the spacer and a retaining ring fastened to the outer surface of the third engaging bar and the fourth engaging bar by an elastic force,
The upper portion
And an upper cover for closing an open upper surface of the upper support column, wherein the upper support column has an upper surface opened and a lower space extending downward to form an empty space on the inner side,
The bottom
A lower support column extending upward from the inner side to support a load applied in the gravity direction by being engaged with the upper support column and a lower cover for sealing the opened lower surface of the lower support column,
And the third coupling bar includes at least one coupling groove recessed from the inclined surface,
And at least one fastening protrusion protruding from the opposite end face and inserted into the fastening groove. The spacer assembly of claim 1,
delete 2. The apparatus of claim 1, wherein the first coupling bar
A first body having a front surface opened and extending from an outer surface of the spacer in both side walls;
An engaging groove protruding from an inner wall surface of the first body; And
And a plurality of spacers formed integrally with each other, the spacer being formed through the first body.
2. The apparatus of claim 1, wherein the second coupling bar
A second body extending from an outer surface of the spacer;
An insertion end formed step-wise with the second body and inserted into the first coupling bar; And
And a plurality of spacers protruding outward from the insertion end.
5. The apparatus of claim 4, wherein the second coupling bar
And a stepped groove inwardly projected from an outer surface of the insertion end.


delete delete delete delete delete

Images