WO2008018676A1

WO2008018676A1 - Device and method for fixing lower runner of sandwich panel

Info

Publication number: WO2008018676A1
Application number: PCT/KR2007/002295
Authority: WO
Inventors: Gil-Ho Kang; Beom-Goo Son; Je-Min Yu; Yong-Gyu Lee; Kwang-Min Kim
Original assignee: Lg Chem, Ltd.
Priority date: 2006-08-07
Filing date: 2007-05-10
Publication date: 2008-02-14

Abstract

The present invention relates to a device and method for fixing a lower runner of a sandwich panel to a floor surface, in which the lower runner is elastically pressed toward the floor surface and thus fixed to the floor surface using a pressure unit, so that the lower runner can be easily fixed to and removed from the floor surface, without damaging floor finishing materials or heating pipes. The fixing device has an elastic body holder seated on the bottom plate of the lower runner; a coil-type elastic body held in the elastic body holder; and a cover elastically supported on the elastic body and inserted into the lower end of the stud. When the stud, which is provided with the pressure unit in its lower end, is vertically installed between the upper and lower runners, the pressure unit is compressed and pressure-fixes the lower runner to the floor surface.

Description

DEVICE AND METHOD FOR FIXING LOWER RUNNER OF

SANDWICH PANEL

Technical Field

[1] The present invention relates to a device and method for fixing a lower runner of a sandwich panel to a floor surface, in which the lower runner is elastically pressed toward the floor surface and thus fixed to the floor surface using a pressure unit, instead of using conventional hammered-type fixtures, such as nails or tacks, at the position between the lower end of a stud and the lower runner, so that the lower runner can be easily and simply fixed to and removed from the floor surface, without causing damage to floor finishing materials or breakage of heating pipes. Background Art

[2] Generally, to build nonbearing walls (unloaded walls) in a variety of buildings, a wet process, in which bricks or blocks are laid to form a wall and, thereafter, the side surfaces of the wall are finished using cement mortar, has been widely used. However, the wet process is disadvantageous in that it requires a lengthy wall construction time period and the wall cannot be moved after the wall has been built through the wet process.

[3] A dry process, in which a plurality of prefabricated sandwich panels, each comprising two side boards and an insulating board or a sound-absorbing board interposed between the two side boards, is easily and quickly installed at a desired place in an indoor space using predetermined support structures, such as upper and lower runners, has been proposed and used. The sandwich panels can be easily removed, so that a wall, which has been built using the sandwich panels, can be easily moved from an existing place to another place.

[4] FlG. 1 and FlG. 2 show an example of conventional sandwich panels. As shown in the drawings, a conventional sandwich panel is fixed to both a floor surface 1 and a ceiling 2 using bar-shaped upper and lower runners 3 and 4, which are fixed to the ceiling and the floor surface, respectively, using nails 5 or tacks (not shown). At least two studs 6, each of which has a three-sided structure or a four-sided structure, are placed between the upper and lower runners 3 and 4 at regular intervals. Thereafter, an interior board 7, which is made of an insulating material or a sound-absorbing material, such as glass wool or rock wool, is installed between the studs 6. Thereafter, two side boards 8, such as gypsum boards, are securely mounted to opposite sides of the studs 6 using locking screws.

[5] However, the conventional sandwich panel is disadvantageous in that a floor finishing material 9 or a heating pipe 10 may be damaged or broken by the sharp tips of the nails 5 or the tacks while the nails 5 or the tacks are driven to fix the lower runner 4, so that it is difficult to build a wall using the conventional sandwich panels. Further, when the conventional sandwich panel is moved from its current location, nail holes remain at that location, so that a small amount of repair work must be executed in order to remove the nail holes. Further, when the floor finishing material 9 is severely damaged upon removal of the sandwich panels, severely damaged portions of the floor finishing material 9 must be removed prior to executing major repair work, such as plastering work.

[6] Thus, Japanese Patent Laid-Open Publication No. 2001-115588 proposed a structure for building a wall without using conventional nails or tacks. As shown in FIG. 3 through FIG. 5, in the Japanese structure, a depression 12a is formed in the upper frame 12 of a movable wall panel 11. A compressible unit 13, which is elastically compressible in a vertical direction and is provided with an elasticity adjusting unit 14 (comprising a rack 14a and a pinion 14b) for adjusting the elasticity of the compressible unit 13, is placed between the depression 12a and the ceiling 2, such that the compressible unit 13 can be elastically compressed in the vertical direction. Thus, the height h of the compressible unit 13 can be adjusted by manipulating the elasticity adjusting unit 14, so that the upper frame 12 can be locked to the ceiling 2 or unlocked from the ceiling 2, as desired.

[7] However, because the movable wall panel 11 of the Japanese structure is supported to both the ceiling and the floor surface without using runners, the structure of the movable wall panel 11 is different from that of the sandwich panel pertinent to the present invention, which is fixed to both the ceiling and to the floor surface using runners. Further, the Japanese structure is elastically operated by the elasticity of the compressible unit 13, in which the elasticity can be adjusted by the elasticity adjusting unit 14, and thus the Japanese structure is different from the present invention, which uses only the elasticity of an elastic body. Further, the installation location of the compressible unit 13 is different from that of a pressure unit according to the present invention.

[8] In addition, although one of the upper and lower ends of the movable wall panel 11 is held by the compressible unit 12, no specified means for holding the other end of the movable wall panel 11 is disclosed in the Japanese patent application. Thus, when a strong shock is applied to the unsupported end of the movable wall panel 11, the movable wall panel 11 may easily fall flat on one side surface, thus causing a safety ha zard.

[9] Further, the Japanese structure requires an electrical or mechanical drive device for rotating the pinion 14b of the elasticity adjusting unit 14, thus having a complicated construction and being expensive. Furthermore, when the drive device of the Japanese structure is not used for a lengthy period of time, the drive unit may age, and thus fail to operate. Disclosure of Invention

Technical Problem

[10] Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and an object of the present invention is to provide a device and method for fixing a lower runner of a sandwich panel, in which the lower runner is pressure-fixed to a floor surface using an elastic body, so that it is possible to prevent damage to floor finishing materials or breakage of heating pipes caused by conventional hammered-type fixtures, such as nails or tacks. Technical Solution

[11] In order to accomplish the above object, in an aspect, the present invention provides a device for fixing a lower runner of a sandwich panel using a pressure unit, which is provided between a lower end of a stud and the lower runner and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: an elastic body holder seated on a bottom plate of the lower runner; a coil-type elastic body held in the elastic body holder and providing vertical elasticity to the pressure unit; and a cover, elastically supported on the elastic body and inserted into the lower end of the stud, and elastically movable upwards and downwards relative to the elastic body holder.

[12] In the lower runner fixing device, the sandwich panel may comprise: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[13] In the lower runner fixing device, each of the studs may be secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[14] In the lower runner fixing device, the elastic body holder may be provided with a pocket to receive the coil-type elastic body therein.

[15] The lower runner fixing device may further comprise: a first anti-slip means for preventing slippage of the lower runner.

[16] In the lower runner fixing device, the first anti-slip means may comprise an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[17] In the lower runner fixing device, the first anti-slip means may comprise an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner. [18] The lower runner fixing device may further comprise: a second anti-slip means for preventing slippage of the elastic body holder.

[19] In the lower runner fixing device, the second anti-slip means may comprise an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the elastic body holder and the bottom plate of the lower runner.

[20] In the lower runner fixing device, the second anti-slip means may comprise an uneven surface or a knurled portion, which is formed on a lower surface of the elastic body holder or on the bottom plate of the lower runner.

[21] In the lower runner fixing device, the cover may be provided with a locking step at a lower end thereof to limit insertion of the cover relative to the stud.

[22] In another aspect, the present invention provides a device for fixing a lower runner of a sandwich panel using a pressure unit, which is provided between a lower end of a stud and the lower runner, and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: a fitting part fitted into the lower end of the stud; and an elastic deformable part extending from the fitting part at an upper end thereof and seated on a bottom plate of the lower runner at a lower end thereof.

[23] In the lower runner fixing device, the sandwich panel may comprise: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[24] In the lower runner fixing device, each of the studs may be secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[25] In the lower runner fixing device, a lower end of the elastic deformable part may be provided with a curved edge, which is curved upwards.

[26] The lower runner fixing device may further comprise: a first anti-slip means for preventing slippage of the lower runner.

[27] In the lower runner fixing device, the first anti-slip means may comprise an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[28] In the lower runner fixing device, the first anti-slip means may comprise an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner.

[29] In a further aspect, the present invention provides a device for fixing a lower runner of a sandwich panel using a pressure unit which is provided between a lower end of a stud and the lower runner and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: a base plate seated on the bottom plate of the lower runner; a first plate spring, which slopes forwards and is fixed to the base plate at a lower end thereof; and a second plate spring, which slopes backwards and is fixed to the base plate at the lower end thereof.

[30] In the lower runner fixing device, the sandwich panel may comprise: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[31] In the lower runner fixing device, each of the studs may be secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[32] In the lower runner fixing device, the first and second plate springs may be provided on upper surfaces thereof with respective stop protrusions, which are stopped by an inside edge of the lower end of the stud during compression of the first and second plate springs.

[33] The lower runner fixing device may further comprise: a first anti-slip means for preventing slippage of the lower runner.

[34] In the lower runner fixing device, the first anti-slip means may comprise an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[35] In the lower runner fixing device, the first anti-slip means may comprise an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner.

[36] The lower runner fixing device may further comprise: a second anti-slip means for preventing slippage of the base plate.

[37] In the lower runner fixing device, the second anti-slip means may comprise an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the base plate and the bottom plate of the lower runner.

[38] In the lower runner fixing device, the second anti-slip means may comprise an uneven surface or a knurled portion, which is formed on a lower surface of the base plate or on the bottom plate of the lower runner.

[39] In still another aspect, the present invention provides a method for fixing a lower runner of a sandwich panel, comprising: vertically installing a stud, which is provided with a pressure unit in a lower end thereof, between an upper runner secured to a ceiling and a lower runner placed on a floor surface, such that the pressure unit is compressed to pressure-fix the lower runner to the floor surface.

[40] The lower runner fixing method may further comprise: placing a first anti-slip means, which prevents slippage of the lower runner, between the lower runner and the floor surface.

[41] The lower runner fixing method may further comprise: placing a second anti-slip means, which prevents slippage of the pressure unit, between the pressure unit and the lower runner.

Advantageous Effects

[42] As described above, in the present invention, the lower runner is pressure-fixed to the floor surface using an elastic deformable pressure unit, so that it is possible to prevent damage to the floor finishing material or breakage of heating pipe caused by hammered-type fixtures, such as nails or tacks, and thus the lower runner can be easily and simply installed and removed. [43] Further, even when the lower runner is removed from the floor surface, the floor surface has no nail trace and no tack trace, so that additional work for repairing the floor surface is not required. [44] Further, the upper runner is securely fixed to the ceiling using a nail or a tack in the same manner as a conventional manner, so that, although the lower runner is fixed through the pressure fixing method, the runner maintains its strong installation state and thus sufficiently resists strong impacts.

Brief Description of the Drawings

[45] FIG. 1 is an exploded perspective view of a conventional sandwich panel;

[46] FIG. 2 is a sectional view of the assembled sandwich panel of FIG. 1 ;

[47] FIG. 3 is a front view of another conventional sandwich panel;

[48] FIG. 4 is a sectional view illustrating the portion A of FIG. 3 in detail, in which the portion A has been tensioned; [49] FIG. 5 is a sectional view illustrating the portion A of FIG. 3 in detail, when the portion A has been compressed; [50] FIG. 6 is an exploded perspective view of a lower runner fixing device according to the first embodiment of the present invention; [51] FIG. 7 is a sectional view of the lower runner fixing device of FIG. 6 when the device is not installed; [52] FIG. 8 is a sectional view of the lower runner fixing device of FIG. 6 after the device has been installed; [53] FIG. 9 is a view illustrating the state of a lower runner fixing device according to the second embodiment of the present invention, when the device is not compressed; [54] FIG. 10 is a view illustrating the lower runner fixing device of FIG. 9 when the device has been compressed; [55] FIG. 11 is a view illustrating the state of a lower runner fixing device according to the third embodiment of the present invention, when the device is not compressed; and [56] FIG. 12 is a view illustrating the lower runner fixing device of FIG. 11 when the device has been compressed. Best Mode for Carrying Out the Invention

[57] Herein below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[58] Among the accompanying drawings, FlG. 6 is an exploded perspective view of a lower runner fixing device according to the first embodiment of the present invention. FlG. 7 is a sectional view of the lower runner fixing device of FlG. 6 when the device is not installed. FlG. 8 is a sectional view of the lower runner fixing device of FlG. 6 after the device has been installed. FlG. 9 is a view illustrating the state of a lower runner fixing device according to the second embodiment of the present invention, when the device is not compressed. FlG. 10 is a view illustrating the lower runner fixing device of FlG. 9 when the device has been compressed. FlG. 11 is a view illustrating the state of a lower runner fixing device according to the third embodiment of the present invention, when the device is not compressed. FlG. 12 is a view illustrating the lower runner fixing device of FlG. 11 when the device has been compressed.

[59] As shown in the drawings, the reference numeral 100 denotes a sandwich panel, and the numerals 200, 210 and 220 denote respective pressure units, each of which is com- pressively installed between the lower end of a stud 130 and a lower runner of the sandwich panel 100, thus elastically biasing the lower runner 120 toward a floor.

[60] The sandwich panel 100 is installed between the ceiling 2 and the floor 1 and comprises bar-shaped upper and lower runners 110 and 120; at least two studs 130, which are vertically installed between the upper and lower runners 110 and 120 such that the studs 130 are spaced apart from each other at regular intervals and are fitted into the upper runner 110 at the upper ends thereof, and are fitted into the lower runner 120 at the lower ends thereof; at least two side boards 140, which are assembled with the studs 130 on opposite sides of the studs 130, thus forming wall surfaces of the sandwich panel; and an interior board 150, which is made of an insulating material or a sound-absorbing material and is interposed between the opposite side boards 140.

[61] As shown in FlG. 6 through FlG. 8, which show the first embodiment of the pressure unit 200, the pressure unit 200 may comprise an elastic body holder 201, which is seated on a bottom plate 121 of the lower runner 120; a coil-type elastic body 203, which is held in the elastic body holder 201 and provides vertical elasticity to the pressure unit 200; and a cover 205, which is elastically supported on the elastic body 203 and is inserted into the lower end of each of the studs 130, and is elastically movable upwards and downwards relative to the elastic body holder 201. The elastic body holder 201 is provided with a pocket 201a, which is open at the top thereof and guides the vertical elastic movement of the elastic body 203 while preventing the elastic body 203 from escaping from the desired location thereof. Further, the cover 205 is provided with a locking step 205a at the lower end thereof, so that the cover 205 can be prevented from being fully inserted into the stud 130. Further, the cover 205 is provided with a vertical guide groove 205b, which is vertically formed on the inner surface of the cover 205, so that the cover 205 can be precisely moved in a vertical direction while being prevented from being removed from the elastic body holder 201. A guide protrusion 201b is provided on the upper end of the elastic body holder 201 and is guided along the guide groove 205b. A locking protrusion 205c is provided on the lower end of the guide groove 205b and prevents the guide protrusion 201b from being removed from the guide groove 205b. In the present invention, the guide protrusion 201b and the locking protrusion 205c preferably have curved shapes to enable easy engagement of the elastic body holder 201 and the cover 205.

[62] As shown in FIG. 9 and FIG. 10, which show the second embodiment of the pressure unit 210, the pressure unit 210 may be made of a plate spring. The plate spring of the pressure unit 210 comprises a fitting part 211, which is fitted into the lower end of the stud 130; and an elastic deformable part 213, which is integrated with the fitting part 211 at the upper end thereof and is seated on the bottom plate 121 of the lower runner 120 at the lower end thereof.

[63] The lower end of the elastic deformable part 213 is provided with a curved edge

213a, which is curved upwards. Thus, when the elastic deformable part 213 is compressed or elastically restores its original shape, it is possible to reduce friction between the lower end of the elastic deformable part 213 and the bottom plate 121 of the lower runner 120.

[64] As shown in FIG. 11 and FIG. 12, which show the third embodiment of the pressure unit 220, the pressure unit 220 may comprise a base plate 221, which is seated on the bottom plate 121 of the lower runner 120; a first plate spring 223, which slopes forwards and is fixed to the base plate 221 at the lower end thereof; and a second plate spring 225, which slopes backwards and is fixed to the base plate 221 at the lower end thereof.

[65] In the third embodiment, the first and second plate springs 223 and 225 are provided on the upper surfaces thereof with respective stop protrusions 223a and 225a, which are stopped by the inside edge of the lower end of the stud 130 during compression of the first and second plate springs 223 and 225, so that the stud 130 and the first and second plate springs 223 and 225 can precisely engage with each other.

[66] Further, the present invention may be provided with a first anti-slip means 300 to prevent the slippage of the lower runner 120, and with a second anti-slip means 400 to prevent the slippage of the pressure unit 200 or 220.

[67] As shown in FIG. 8, the first anti-slip means 300, which is a means for preventing the slippage of the lower runner 120 relative to the floor surface 1, may comprise an adhesive sheet 310 or a nonadhesive sheet (not shown) having a high coefficient of friction, which is placed between the floor surface 1 and the lower runner 120. Alternatively, the first anti-slip means 300 may comprise an uneven surface 320 or have a knurled portion, which is formed on the lower surface of the bottom plate 121 of the lower runner 120.

[68] As shown in FlG. 8, the second anti-slip means 400 is a means for preventing slippage of the pressure unit 200 or 220 relative to the lower runner 120. In the first embodiment, the second anti-slip means 400 for preventing slippage of the pressure unit 200 may comprise an adhesive sheet 410 or a nonadhesive sheet (not shown) having a high coefficient of friction, which is placed between the elastic body holder 201 and the bottom plate 121 of the lower runner 120. Alternatively, the second anti- slip means 400 may comprise an uneven surface 420 or a knurled portion, which is formed on the lower surface of the elastic body holder 201 or on the bottom plate 121 of the lower runner 120.

[69] When the pressure unit comprises a plate string 210, as described above for the second embodiment, there is no requirement to provide the second anti-slip means because the plate spring is a deformable member, which can itself be elastically deformed.

[70] When the pressure unit is configured as a crossing plate spring assembly 220, as described above for the third embodiment, the second anti-slip means 400 may comprise an adhesive sheet 410 or a nonadhesive sheet (not shown) having a high coefficient of friction, which is placed between the base plate 221 and the bottom plate 121 of the lower runner 120. Alternatively, the second anti-slip means 400 may comprise an uneven surface 420 or a knurled portion (not shown), which is formed on the base plate 221 or on the bottom plate 121 of the lower runner 120.

[71] Hereinbelow, the process of fixing a sandwich panel using the lower runner fixing device according to the present invention will be described.

[72] At the first step, the upper runner 110 is securely fixed to the ceiling 2 using nails or tacks (not shown). The ceiling 2 must not be provided with a plastered layer or heating pipes, so that the fixing of the upper runner 110 to the ceiling 2 using the nails or tacks in the same manner as a conventional manner will not damage or break heating pipes or a plastered layer.

[73] At the second step, the lower runner 120 is fixed on the floor surface 1 using the first anti-slip means 300 such that the lower runner 120 does not slip on the floor surface 1. Even when no lower runner 120 is installed on the floor surface 1 at a designated location, the studs 130 may be successfully installed on the floor surface 1. However, if the lower runner 120 is installed on the floor surface 1 at the designated location, the studs 130 may be more easily installed on the floor surface 1, and thus the lower runner 120 is preferably installed on the floor surface 1 using the first anti-slip means 300.

[74] At the third step, the pressure unit 200 or 210 is assembled with the lower end of the stud 130. In the above state, unlike the pressure units 200 and 210 of the first and second embodiments, it is very difficult to assemble the pressure unit 220 of the third embodiment with the stud 130, and thus the pressure unit 220 is not assembled with the stud 130 at this step.

[75] At the fourth step, a plurality of studs 130 is vertically installed between the upper runner 110 and the lower runner 120 at regular intervals defined between the studs 130. At this step, if a pressure unit has been assembled with the lower end of each of the studs 130, as described above for the pressure units 200 and 210 of the first and second embodiments, the pressure unit is elastically compressed during the process of vertically installing the studs 130, so that the lower runner 120 can be securely installed on the floor surface 1 due to the elasticity of the pressure unit. However, if no pressure unit has been assembled with the lower end of each of the studs 130, as described above for the pressure unit 220 of the third embodiment, the pressure unit 220 is placed on the bottom plate 121 of the lower runner 120 in advance, prior to the vertical installation of the studs 130. Thereafter, the studs 130 are vertically installed between the respective pressure units 220 and the upper runner 110. Thus, the pressure units 220 are elastically compressed and bias the lower runner 120 towards the floor surface 1, so that the lower runner 120 can be securely placed on the floor surface 1. In the above state, it is preferred that the second anti-slip means 400 be placed between the pressure unit 200 or 220 of the first or third embodiment and the bottom plate 121 of the lower runner 120 so as to thereby prevent slippage of the pressure unit 200 or 220 relative to the bottom plate 121 of the lower runner 120.

[76] At the fifth step, an interior board 150, which is made of an insulating material or a sound-absorbing material, is placed between the studs 130.

[77] At the sixth step, two side boards 140 are mounted to the studs 130 on opposite sides of the studs 130, thus forming wall surfaces of the sandwich panel and finishing the sandwich panel installation work.

Industrial Applicability

[78] As described above, in the present invention, the lower runner is pressure-fixed to the floor surface using an elastic deformable pressure unit, so that it is possible to prevent damage to the floor finishing material or breakage of heating pipes caused by hammered-type fixtures, such as nails or tacks, and thus the lower runner can be easily and simply installed and removed. [79] Further, when the lower runner is removed from the floor surface, the floor surface has no nail traces and no tack traces, so that additional work for repairing the floor surface is not required.

[80] Further, the upper runner of the present invention is securely fixed to the ceiling using a nail or a tack in the same manner as a conventional manner, so that, although the lower runner is fixed through the pressure fixing method, the runner remains securely installed and thus sufficiently resists strong impacts.

Claims

[1] A device for fixing a lower runner of a sandwich panel using a pressure unit, which is provided between a lower end of a stud and the lower runner and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: an elastic body holder seated on a bottom plate of the lower runner; a coil-type elastic body held in the elastic body holder and providing vertical elasticity to the pressure unit; and a cover, elastically supported on the elastic body and inserted into the lower end of the stud, and elastically movable upwards and downwards relative to the elastic body holder.

[2] The lower runner fixing device according to claim 1, wherein the sandwich panel comprises: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[3] The lower runner fixing device according to claim 1, wherein each of the studs is secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[4] The lower runner fixing device according to claim 1, wherein the elastic body holder is provided with a pocket to receive the coil-type elastic body therein.

[5] The lower runner fixing device according to claim 1, further comprising: a first anti-slip means for preventing slippage of the lower runner.

[6] The lower runner fixing device according to claim 5, wherein the first anti-slip means comprises an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[7] The lower runner fixing device according to claim 5, wherein the first anti-slip means comprises an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner.

[8] The lower runner fixing device according to claim 1, further comprising: a second anti-slip means for preventing slippage of the elastic body holder.

[9] The lower runner fixing device according to claim 8, wherein the second anti-slip means comprises an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the elastic body holder and the bottom plate of the lower runner.

[10] The lower runner fixing device according to claim 8, wherein the second anti-slip means comprises an uneven surface or a knurled portion, which is formed on a lower surface of the elastic body holder or on the bottom plate of the lower runner.

[11] The lower runner fixing device according to claim 1, wherein the cover is provided with a locking step at a lower end thereof to limit insertion of the cover relative to the stud.

[12] A device for fixing a lower runner of a sandwich panel using a pressure unit, which is provided between a lower end of a stud and the lower runner, and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: a fitting part fitted into the lower end of the stud; and an elastic deformable part extending from the fitting part at an upper end thereof and seated on a bottom plate of the lower runner at a lower end thereof.

[13] The lower runner fixing device according to claim 12, wherein the sandwich panel comprises: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[14] The lower runner fixing device according to claim 12, wherein each of the studs is secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[15] The lower runner fixing device according to claim 12, wherein a lower end of the elastic deformable part is provided with a curved edge, which is curved upwards.

[16] The lower runner fixing device according to claim 12, further comprising: a first anti-slip means for preventing slippage of the lower runner.

[17] The lower runner fixing device according to claim 16, wherein the first anti-slip means comprises an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[18] The lower runner fixing device according to claim 16, wherein the first anti-slip means comprises an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner.

[19] A device for fixing a lower runner of a sandwich panel using a pressure unit which is provided between a lower end of a stud and the lower runner and pressure-fixes the lower runner to a floor surface, wherein the pressure unit comprises: a base plate seated on the bottom plate of the lower runner; a first plate spring, which slopes forwards and is fixed to the base plate at a lower end thereof; and a second plate spring, which slopes backwards and is fixed to the base plate at the lower end thereof.

[20] The lower runner fixing device according to claim 19, wherein the sandwich panel comprises: bar-shaped upper and lower runners installed on a ceiling and the floor surface, respectively; a plurality of studs vertically installed between the upper and lower runners such that the studs are spaced apart from each other at regular intervals; side boards assembled with the studs on opposite sides of the studs, thus forming wall surfaces of the sandwich panel; and an interior board interposed between the side boards.

[21] The lower runner fixing device according to claim 19, wherein each of the studs is secured at an upper end thereof to the upper runner, which is securely fixed to a ceiling using nails or tacks.

[22] The lower runner fixing device according to claim 19, wherein the first and second plate springs are provided on upper surfaces thereof with respective stop protrusions, which are stopped by an inside edge of the lower end of the stud during compression of the first and second plate springs.

[23] The lower runner fixing device according to claim 19, further comprising: a first anti-slip means for preventing slippage of the lower runner.

[24] The lower runner fixing device according to claim 23, wherein the first anti-slip means comprises an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the floor surface and the lower runner.

[25] The lower runner fixing device according to claim 23, wherein the first anti-slip means comprises an uneven surface or a knurled portion, which is formed on a lower surface of the lower runner.

[26] The lower runner fixing device according to claim 19, further comprising: a second anti-slip means for preventing slippage of the base plate.

[27] The lower runner fixing device according to claim 26, wherein the second anti- slip means comprises an adhesive sheet or a nonadhesive sheet having a high coefficient of friction, which is placed between the base plate and the bottom plate of the lower runner.

[28] The lower runner fixing device according to claim 26, wherein the second anti- slip means comprises an uneven surface or a knurled portion, which is formed on a lower surface of the base plate or on the bottom plate of the lower runner.

[29] A method for fixing a lower runner of a sandwich panel, comprising: vertically installing a stud, which is provided with a pressure unit in a lower end thereof, between an upper runner secured to a ceiling and a lower runner placed on a floor surface, such that the pressure unit is compressed to pressure-fix the lower runner to the floor surface.

[30] The lower runner fixing method according to claim 29, further comprising: placing a first anti-slip means, which prevents slippage of the lower runner, between the lower runner and the floor surface.

[31] The lower runner fixing method according to claim 29 or 30, further comprising: placing a second anti-slip means, which prevents slippage of the pressure unit, between the pressure unit and the lower runner.