KR20150061694A

KR20150061694A - Stud

Info

Publication number: KR20150061694A
Application number: KR1020130145435A
Authority: KR
Inventors: 김규식; 김경호; 김성훈; 안은영
Original assignee: 주식회사 케이씨씨
Priority date: 2013-11-27
Filing date: 2013-11-27
Publication date: 2015-06-05

Abstract

The present invention relates to a stud which is made thinner than existing studs to reduce material costs and improves shape and structure to improve sound insulation performance and structural safety.

Description

Stud {Stud}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stud used when a wall is constructed, and more particularly to a light weight steel stud having a reduced cost.

Typically, the drywall is inserted and installed between upper and lower runners with vertical studs spaced at regular intervals, and one or two layers of gypsum boards or cement boards are fixed on one side of the vertical studs, A fixing pin and the like are installed, and the heat insulating material and the sound absorbing material are installed in a space between the vertical studs, and then the surface finishing material is installed on the vertical stud. In this case, the vertical stud is installed by fixing the C type stud of 0.8 T (thickness, mm) or more to the runner, and then fixing the gypsum board to both sides of the stud.

Due to the structural stability of the dry wall and the allowable height limit, the C type studs of 0.8T or more have been used as vertical studs. However, in order to reduce the cost, studs with a thickness (for example, 0.6T or less) It is necessary to develop a stud that exhibits the same level of physical performance as a TC-type stud.

Accordingly, it is an object of the present invention to provide a stud having a sound performance equivalent to that of a conventional stud when the stud of a thinner thickness than that of the conventional stud is developed, and at the same time, the sound insulation performance is superior to that of the existing stud.

In order to achieve the above-mentioned object, the present invention is characterized by comprising: a first plate arranged in a transverse direction; A second plate disposed laterally at a predetermined distance from the first plate; And a third plate longitudinally connecting the first plate and the second plate spaced apart from each other by a predetermined distance in the transverse direction from the ends of the first plate and the second plate, And the connecting portion of the plate and the connecting portion of the second plate and the third plate are bent and have overlapping portions.

The stud according to the present invention can preferably be manufactured as an integral part.

In the present invention, the overlapping portion may be 2 to 20 mm.

According to an embodiment of the present invention, the third plate may include a concavo-convex structure.

According to another embodiment of the present invention, the third plate may be arcuate.

In the present invention, the first plate, the second plate and the third plate may have a thickness of 0.6 to 0.75 mm.

In the present invention, the connecting portions of the first plate and the third plate and the connecting portions of the second plate and the third plate are bent, and overlapping portions corresponding to the separation distance may be formed at the connecting portions.

The stud according to the present invention is thinner than conventional studs to reduce the manufacturing cost and improves the shape and structure of the stud so that it can exhibit physical performance equivalent to that of existing studs even if the thickness is thinner than that of existing studs, Is superior to existing studs.

1 is a cross-sectional view showing a shape of an existing stud.
2 is a cross-sectional view showing the shape of a stud according to the present invention.
3-6 are perspective views of a stud according to various embodiments of the present invention.
7 is a graph comparing the sound insulation performance of the present invention with that of an existing stud.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing a shape of an existing stud, and the stud has a substantially C-shaped cross section. As shown in the drawing, the existing studs include a first plate 1 which is a horizontal plate disposed horizontally (horizontal direction), a second plate 1 which is a horizontal plate disposed parallel to the horizontal direction at a predetermined distance from the first plate 1 A second plate 2 and a third plate 3 which is a vertical plate connecting the first plate 1 and the second plate 2 in the vertical direction, Are connected at the ends of the first plate (1) and the second plate (2). In addition, the thickness of each of the plates 1, 2, and 3 of the conventional stud is 0.8 mmT, and the manufacturing cost is relatively high.

FIG. 2 is a cross-sectional view showing the shape of a stud according to the present invention, wherein the stud according to the present invention includes a first plate 10 as a horizontal plate arranged in a horizontal direction (horizontal direction) And a second plate 20 which is a horizontal plate disposed parallel to the first plate 10 and the second plate 20 in a horizontal direction and a third plate 20 which is a vertical plate connecting the first plate 10 and the second plate 20 in the longitudinal direction And the third plate 30 is spaced apart from the ends of the first plate 10 and the second plate 20 by a predetermined distance in the transverse direction, unlike the conventional stud shown in FIG. 1 And the first plate 10 and the second plate 20 are connected to each other in the longitudinal direction.

As described above, the stud according to the present invention is characterized in that the third plate 30 is disposed apart from the ends of the first plate 10 and the second plate 20. With this configuration, stresses of the first plate 10 and the second plate 20 can be reinforced, and the length at which the bending moments of the first plate 10 and the second plate 20 are generated is shortened, It is possible to prevent warpage from occurring when the surface finishing material such as a board is fixed.

The distance d from the end of the first plate 10 to the third plate 30, that is, the overlapping portion is 2 to 20 mm, preferably 3 to 15 mm, May be between 4 and 10 mm. If the spacing distance d is too short or long, it may be difficult to secure physical performance equivalent to that of existing studs (yield stress, allowable wall height, displacement amount, sound insulation performance, etc.).

The thickness of the plates 10, 20 and 30 may be 0.75 mm or less, preferably 0.6 to 0.75 mm. If the thickness of each of the plates 10, 20, and 30 is less than 0.6 mmT, the physical performance such as yield stress, wall allowable height, displacement amount, and sound insulation performance may significantly deteriorate as compared with existing studs. Conversely, if the thickness of each of the plates 10, 20, 30 exceeds 0.75 mmT, the physical performance may increase, but the manufacturing cost may rise sharply and become similar to the manufacturing cost of existing studs.

The stud according to the present invention can reduce the manufacturing cost by reducing the thickness of the stud. The physical performance degradation caused by reducing the thickness can be compensated for by the structural improvement such as the spacing of the third plate 30 as described above.

The connecting portion between the first plate 10 and the third plate 30 and the connecting portion between the second plate 20 and the third plate 30 are spaced apart from each other by a distance (d) can be formed. This overlapping region 40 can increase the stiffness and structural safety of the stud. Specifically, when the gypsum board is fixed to the first plate 10 and the second plate 20 as the overlapping portions 40 are formed, the load-bearing properties of the plates 10 and 20 are improved, It becomes easy. In the case of a thin-walled stud, warpage may occur in the first and second plates 10 and 20 when the gypsum board is fixed. This can be prevented by forming the overlapping portion 40. The allowable height of the drywall can also be greatly improved due to the overlap region 40, which can be confirmed from simulation results. However, in the present invention, the overlapping portion 40 is not essential, and the third plate 30 may be directly connected to the first plate 10 and the second plate 20 without being overlapped.

The third plate 30 may have a straight shape as shown in FIGS. 3 and 4, a curved or arcuate shape as shown in FIG. 5, and a concave-convex shape as shown in FIG. 6, and both the straight line segment and the curved line segment .

The stud according to the present invention may be made of wood or metal, preferably a lightweight steel frame. The lightweight steel frame may be a galvanized steel sheet. The galvanized steel sheet is a steel sheet which is plated with zinc by a cold rolled steel sheet and is resistant to corrosion and has a smooth surface. Examples of the steel sheet include galvanized steel sheets, Hot-dip galvanized steel sheet made by immersing the steel sheet in the state, and galvannealed steel sheet made of an alloy of iron and zinc by heat-treating the galvanized steel sheet. The galvanized steel sheet has excellent physical properties such as corrosion resistance, durability and workability, and can have a specific gravity of 7 to 8.

When a lightweight steel material is used as the material of the stud, the durability and productivity can be remarkably improved, and the structural stability can be improved for a long time because the material is not deformed even for a long period of outdoor exposure. In addition, due to the characteristics of lightweight steel, it is produced in roll molds, and mass production is facilitated through punching molds in the processing process, thus ensuring price competitiveness.

The stud according to the present invention can be manufactured integrally with a roll-forming mold or the like.

Figs. 3 to 6 are perspective views of studs according to various embodiments of the present invention, in which case the third plate 30 in the case of Fig. 3 is a straight line.

3, the third plate 30 is formed in a straight shape, and the third plate 30 is longer than the separation distance d of FIG. 3, that is, the third plate 30 is located on the right side (Right side) toward the opening portion. In this embodiment, the displacement amount may be smaller than that of the existing product.

In the case of FIG. 5, the third plate 30 is arcuate (curved). In this embodiment, the amount of displacement may be smaller than that of the conventional product. At this time, it is preferable that the arch is directed toward the opening portion, and the radius of curvature of the arch can be appropriately adjusted.

6, the third plate 30 includes the concavo-convex structure. In order to improve the sound insulation performance, the first plate 10 and the second plate 20, which are paths through which vibration due to noise is transmitted, By forming the concave-convex structure on the connecting third plate 30, the vibration transmission path can be lengthened. That is, the third plate 30 connecting the first plate 10 and the second plate 20 may have concavities and convexities to reduce the amount of vibration transmitted through the third plate 30, thereby improving sound insulation performance . Such a concavo-convex shape has an advantage that the allowable height of the stud can be made higher than that of the flat shape. The size of the irregularities can be appropriately adjusted.

As described above, in the present invention, in order to reduce the unit cost, the thickness of the vertical stud is preferably made as small as 0.6 mmT or less, but in order to compensate the physical performance deteriorated due to the thin thickness, the existing C- The product was designed in a different form. The main purpose of the product design is to prevent the problem that the gypsum board is not fixed properly due to the warping on the side surface of the stud when the gypsum board is fixed to the side (first plate and second plate) of the stud . The conventional C-type stud is in a U shape, but the stud of the present invention has a structure in which a third plate connecting the first plate and the second plate as shown in FIG. 2 is formed in the center of about 2 to 20 mm from the ends of the first plate and the second plate It is located inside. In other words, the first plate connecting the gypsum board and the third plate connecting the gypsum board to reinforce the stress of the second plate are installed by moving the gypsum board by 2 to 20 mm in the central axis direction. Therefore, the length of occurrence of the bending moment of the first plate and the second plate is shortened, so that the bending is not generated even when the gypsum board is fixed.

The present invention has developed a substitute product of a lightweight steel 0.8T C-stud for drywall used in Korea, and developed a stud which can reduce the thickness to 0.6T and improve the sound insulation performance, but can satisfy KS standard of structural rigidity. In order to reinforce the insufficient strength while reducing the thickness to 0.6T, the portion supporting both wings of the stud was pushed into the inside.

The stud of the present invention can be produced, for example, by passing an iron plate having a thickness of 0.6 mm through a roll-forming mold. A flat steel plate passes through the roll mold and has a folded-out stud shape. The line speed is similar to that of the original one produced by processing the original plate applied to the roll forming mold.

The manufacturing cost of the conventional 0.8T C-stud is 1,850 W / m, but the production cost of the 0.6T C-stud according to the present invention is 1,388 W / m, which can greatly reduce the manufacturing cost.

In the present invention, a total of four types of studs are designed by varying the position and shape of the stud wing support portion. However, as the wing support portion is closer to the center portion, the stiffness is increased, but the overlapping portion is increased. Therefore, it is possible to secure additional rigidity through the change in the shape of the support (curved, corrugated).

[Test Example]

In order to evaluate the structural stability of each of the stud products of the present invention as shown in Figs. 3 to 6, stress analysis was performed by a structural analysis simulation program. The results are as follows.

The model and load conditions applied to the analysis are as follows.

- Analysis property

SS400 (galvanized steel sheet) was selected as the material to be used. The yield strength of SS400 was 205 Mpa and the tensile strength was 415 Mpa.

- Load calculation

Pushing force on the wall (home)

75 kg × 9.81 m / s ² × 0.8 (coefficient of friction) × tan 7 ° (body slope) = 72.3 N

- If the product is constrained

Assuming that the upper and lower runners are screwed, they are constrained at the upper and lower ends.

- The product has an allowable height

Calculated using an Excel program. Specifically, we calculated the data for each type in 3D CAD and entered it into Excel.

Table 1 shows the simulation results. C stud (0.8T) is a conventional stud having a thickness of 0.8 mm as shown in FIG. 1, and ALT-1 is a flat stud of the present invention having a spacing distance (overlapping area) 4, and the ALT-3 is an arcuate type stud of the present invention having a spacing distance (overlapping area) of 8 mm as shown in FIG. 5, and the ALT- And the ALT-4 is a concave-convex stud of the present invention having a separation distance (overlapping area) of 4 mm as shown in FIG.

Design Von-mises
Stress (Mpa) Allowable wall height (mm) 1 layer (15T) Two layers (15T) C stud (0.8T) 215 5494.63 5081.26 ALT-1 307.42 5244.45 4839.78 ALT-2 305.61 5332.45 4928.76 ALT-3 274.56 5252.89 4848.85 ALT-4 296.7 5249.64 4847.66

As can be seen in Table 1, the results of the simulation show that in stress (higher numbers are better), all four types of products according to the present invention show better results than conventional C-studs.

In addition, the allowable height of the wall was calculated to be more than 4.8 m, which is more than 2.7 m, which is the average height of the existing apartment house, proving that there is no problem in the structural stability of the wall.

The following is the result of evaluating the sound insulation performance after the drywall was applied to the product of the present invention. Table 2 shows the specifications of the drywall constructed.

division deadline background Stud insulator background deadline Sound insulation performance ALT-1 General gypsum board
12.5T 2PLY Improving
Stud
0.6T Insert 4mm GW
24K
50T General gypsum board
12.5T 2PLY Rw 52 ALT-2 Insert 8mm Rw 49 ALT-3 4mm
Insert + Curve Rw 52 C stud C-stud
0.8T - Rw 48

7 is a graph comparing the sound insulation performance of the present invention with that of an existing stud. As a result of the evaluation of the sound insulation performance, the sound insulation performance of the stud according to the present invention is improved by about 3 to 4 dB compared to a dry wall made of a conventional C- The vibration insulation effect was found to be effective.

1, 10: First Edition
2, 20: Second Edition
3, 30: Third Edition
40: overlap region

Claims

A first plate disposed in a transverse direction;
A second plate disposed laterally at a predetermined distance from the first plate; And
And a third plate spaced apart from the ends of the first plate and the second plate by a predetermined distance in the transverse direction to longitudinally connect the first plate and the second plate,
Wherein the connecting portion between the first plate and the third plate and the connecting portion between the second plate and the third plate are bent and have overlapping portions.

The method according to claim 1,
And the overlapping portion is 2 to 20 mm.

The method according to claim 1,
And the third plate includes a concavo-convex structure.

The method according to claim 1,
And the third plate is arcuate.

The method according to claim 1,
And the thickness of the first plate, the second plate and the third plate is 0.6 to 0.75 mm.