Description

COUPLING DEVICE FOR ANCHORING CONSTRUCTION MATERIAL ONTO THE CEILING

Technical Field

[1] The present invention relates to a coupling device for anchoring constuction material onto the ceiling, and more specifically, to a coupling structure of ceiling frames for attaching boards used as ceiling material in concrete slab structure such as apartment buildings. More particularly, the present invention relates to a lightweight steel coupler for ceiling materials, in which an intersection clip may dispose fixing bars for attaching ceiling materials not in a single direction straightly but in the shape of intersection at a uniform height, and a screw rod is movable along a rail buried in a concrete slab and supports the intersection clip, so that the fixing bars are controllable in the height and movable in right and left directions. Further, the fixing bars are mounted in the intersection shape, so that screw-coupling of gypsum plasterboards becomes stabler. Background Art

[2] In general, gypsum plaster boards for ceiling materials are used in the structures of a relatively low ceiling among residence-centered structures such as apartment buildings or studio apartments. A rectangular gypsum plaster board is used for the purpose of heat insulation, soundproof or heat-retaining, which is formed with various patterns and used as a ceiling pattern element.

[3] As a general and widely-known method for coupling such the gypsum plaster board to the ceiling, a concrete slab is usually buried with a splint and another splint is connected to the concrete slab downward by a supporting rod, so that the splint at the lower part is attached to ceiling materials for forming a ceiling surface.

[4] There has been proposed to attach gypsum plater boards 111 to a concrete slab by using a bracket 101 and a fixing bar 108 as shown in Fig. 1.

[5] That is, the bracket 101 is stably attached to the concrete slab by using a fixing nail

102. The bracket 101 is integrally fixed with a screw shaft 105 downward, so that the screw shaft 105 of the bracket 101 is screw-coupled with a screw hole 114 of a coupler 107.

[6] The coupler 107 is fitted with a coupling element 120 in the middle, wherein both the coupler 107 and the coupling element 120 are freely rotative from each other, and the coupling element 120 is formed with concave insertion grooves 106 at both sides.

[7] Therefore, both ends 109 of the fixing bar 108 are fitted into the insertion grooves

106 of the coupling element 120 in such a manner that the both ends 109 of the fixing

bar 108, which are formed as steel pieces having elasticity, are spread out from each other by pressing them into the insertion grooves 106 so as to be inserted into the insertion grooves 106.

[8] The both ends 109 of the fixing bar 108 are rolled circularly, and lower ends of the insertion grooves 106 are rounded, so that a gap between the both ends 109 are elastically widened and this elastic spreading-out of the both ends 109 may be carried out simply during the coupling work.

[9] The gypsum plaster boards 111 are positioned under a bottom surface of the fixing bar 108 and kept as being attached to the concrete slab by screw nails 112.

[10] The construction structure for attaching the ceiling materials by using the splints as above has an advantage that the attachment of the gypsum plaster boards 111 is very simple since it is possible to disposed wooden ceiling frames in the traverse and longitudinal directions.

[11] The prior art structure has, however, disadvantages that stability of the attachment state becomes degraded and that a ceiling surface becomes ununiform since the wooden materials are twisted or cracks are generated in the wooden materials by moisture as seasons are changing.

[12] Further, control of a uniform interval and uniform arrangement of the wooden materials is a complicated work when using the wooden materials for forming the ceiling frames, so that only the ones who are skilled in the fields may carry out the works, generating a problem of extending a construction time.

[13] The coupling structure of the ceiling frames using the fixing bars, as shown in Fig.

1, has an advantage that the workability is improved by using the fixing bars formed of lightweight metal materials. This coupling structure has, however, a disadvantage that the fixing bars have to be mounted parallel with each other in a single direction by the structural characteristics of the fixing bars themselves, so that gaps are generated in portions contacting the gypsum plaster boards. Further, the bracket hammered to the concrete slab is not movable, so that the construction work thereof becomes lack of precision.

Disclosure of Invention Technical Problem

[14] Therefore, the present invention is derived to take the advantages and resolve the above and any other disadvantages of the prior art coupling structures, in which wooden ceiling frames and metal fixing bars are employed.

[15] According to the present invention, there is an object to provide a lightweight steel coupler for ceiling materials, in which an intersection clip can dispose fixing bars not straightly in a single direction but in the shape of intersection, and a screw rod is

mounted in a rail movably for supporting the intersection clip and a concrete slab, so that height of the intersection clip supporting the fixing bars is freely controllable.

[16] According to the present invention, there is another object to provide a lightweight steel coupler for ceiling materials, in which the screw rod is movable along the rail buried in the concrete slab by an anchor, so that the work for controlling height of the ceiling materials or right and left arrangement of the ceiling materials may be carried out simply even for unskilled workers. Technical Solution

[17] In order to achieve the above objects of the present invention, according to an aspect of the present invention, there is provided a lightweight steel coupler for ceiling materials including a screw rod, of which a head part is movably mounted to a rail buried in a concrete slab, a main body formed with holding grooves at lower ends and controlling a mounting height of a coupling part of the screw rod according to a coupling position of a nut, and an intersection clip having insertion holes to be fitted with the holding grooves of the main body, supporting dies formed with holding protrusions at a bottom surface, and supporting protrusions formed with insertion protrusions in the perpendicular direction with respect to the supporting dies.

Advantageous Effects

[18] According to the present invention, the height of the fixing bars are freely controllable and the height or right and left arrangement of the ceiling materials may be easily controlled since the screw rod is movable along the rail buried in a concrete slab by an anchor.

[19] Therefore, even unskilled persons may execute the construction of the ceiling materials easily.

[20] Furthermore, the fixing bars, which fix gypsum plaster boards, may be arranged in the shape of intersection, so that the gypsum plaster boards may be attached stably and a uniformly horizontal ceiling surface may be obtained without any gaps between such the gypsum plaster boards. Brief Description of the Drawings

[21] The objects, features and advantages of the present invention will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which:

[22] Fig. 1 is a perspective view showing an attachment structure of a prior art ceiling material;

[23] Fig. 2 is a perspective view showing a coupling structure of a ceiling frame according to a preferred embodiment of the present invention, wherein the coupling structure is in the disassembled state;

[24] Fig. 3 is a perspective view showing the coupling structure of a ceiling frame according to the preferred embodiment of the present invention, wherein the coupling structure is in the assembled state;

[25] Fig. 4 is a front view showing an installation state of the coupling structure of a ceiling frame according to the present invention; and

[26] Fig. 5 is a side view showing the installation state of the coupling structure of a ceiling frame according to the present invention. Mode for the Invention

[27] Hereinafter, the supporting panel and the coupling panel are explained in detail in their material characteristics and the preferred embodiments according to the present invention will be described with reference to the accompanying drawings.

[28] Fig. 2 is a perspective view showing a coupling structure of a ceiling frame according to a preferred embodiment of the present invention, wherein the coupling structure is in the disassembled state, and Fig. 3 is a perspective view showing the coupling structure, wherein the coupling structure is in the assembled state.

[29] Fig. 4 is a front view showing an installation state of the coupling structure, and

Fig. 5 is a side view showing the installation state.

[30] Referring to Fig. 2 to Fig. 5, a lightweight steel coupler for ceiling materials according to a preferred embodiment of the present invention includes a rail 500 fixed to a bottom surface of a concrete slab. A head part 410 of a screw rod 400 is inserted into the rail 500, and a coupling part 420 of the screw rod 400 is inserted into a main body 100 so as to be inserted into or withdrawn from the main body by rotation direction of a nut 600.

[31] The nut 600 is inserted into the main body and rotatable forward or backward, so that the coupling part 420 of the screw rod 400 is inserted into an inside of the main body 100 or withdrawn from the main body 100 to the outside by the rotation direction of the nut 600. Therefore, height control of the screw rod 400 is carried out by the rotation direction of the nut through the insertion or withdrawn of the coupling part 420 with respect to the main body 100.

[32] The main body 100 is fitted in an intersection clip 200 at lower parts thereof, so as to be coupled with the intersection clip 200. Fixing bars 300 are coupled with a bottom surface of the intersection clip 200, wherein the fixing bars 300 intersect each other.

[33] The intersection clip 200 is formed with insertion holes 210 penetratingly in the center, to which the lower parts of the main body are inserted. The intersection clip 200 formed with the insertion holes 210 includes a bottom surface formed with supporting dies 220 having holding protrusions 221 and supporting protrusions 231 having insertion protrusions 230 respectively, so that the fixing bars 300 intersect each

other and coupled with each other by the intersection clip 200.

[34] The lightweight steel coupler for ceiling materials as described above, has the rail

500 buried in the concrete slab during hammering procedure or fixed to a bottom surface of the concrete slab by using fixing elements 700 such as nails. The rail 500 is inserted by the screw rod 400 for supporting ceiling materials.

[35] The screw rod 400 is inserted into the rail 500 at its head part 410 only, wherein the screw rod 400 is not separated from the rail 500 and carries out movement in the to and fro direction by such an insertion of the head part 410.

[36] After coupling the head part 410 of the screw rod 400 with the rail 500 as above, the nut 600 is inserted into the main body 100. The nut 600 is rotatable forward or backward, so that a worker may control a length of the screw rod 400 as desired.

[37] The main body 100, which is coupled with the screw rod 400 as the screw rod 400 is controlled in the length, is inserted at the lower parts into the intersection clip 200 for supporting the fixing bars 300.

[38] The intersection clip 200 inserted with the main body 100 as above, fixes the fixing bars 300 in different directions by the supporting dies 220 and the supporting protrusions 231 formed at the lower part of the intersection clip 200.

[39] The main body 100 inserted into the intersection clip 200 has holding protrusions

110 formed with holding grooves 111 at the both lower parts, so that the lower parts of the main body 100 inserted into the intersection clip 200 are coupled with the fixing bars 300 simultaneously when fixing the fixing bars 300 to the supporting bars 220 of the intersection clip 200.

[40] As above, according to the present invention, one of the fixing bars 300 is fixed to the intersection clip 200 in a direction and, simultaneously, the other one of the fixing bars 300 is fixed to the intersection clip 200 in the other direction, so that the fixing bars 300 in the different directions are simultaneously fixed each other perpendicularly. Therefore, gypsum plaster boards may be coupled with the lower parts of the fixing bars 300 simply and stably.

[41] If the surface of the concrete slab of a ceiling is ununiform, or a ceiling frame is not in the horizontal state by some inclination, or an interval between the fixing bars 300 is not uniform, those defects should be corrected to prevent the generation of gaps or bumpy surfaces when attaching the gypsum plaster boards.

[42] The prior arts have an element for controlling the height but are not provided with an element for controlling arrangement in the right and left or to and fro direction, so that gaps are generated between the gypsum plaster boards after the construction.

[43] To the contrary, according to the present invention, the screw rod 400 is inserted into the rail 500 at its head part 410 for moving the intersection clip 200, which fixes the gypsum plaster boards, in the to and fro or right and left direction. Therefore, the

gaps between the gypsum plater boards may be removed. Further, the height of the intersection clip 200 is freely controlled up and down by rotating the nut 600 forward or backward. Therefore, a uniform ceiling surface may be obtained.

[44] Although the foregoing description has been made with reference to the preferred embodiments, it is to be understood that changes and modifications of the present invention may be made by the ordinary skilled in the art without departing from the spirit and scope of the present invention and appended claims.