JP2021195752A - Mounting device and connection metal fitting - Google Patents

Abstract

To provide a mounting device and a connection metal fitting which exhibit sufficient strength performance with respect to a direction orthogonal to a longer direction of a C-shaped steel, even in the state where the C-shaped steel protrudes from an H-shaped steel.SOLUTION: A connection metal fitting 60 is provided so as to adhere a first flange 32 of a C-shaped steel 30 closely to an outer surface of a flange 12 of an H-shaped steel. The connection metal fitting 60 includes: a first horizontal plate part 61 closely adhered to a second flange 33 of the C-shaped steel 30; a pair of vertical plate parts 62 extending in a vertical direction from both ends of the first horizontal plate part 61, and engaged with a web 31 or a lip part 34 of the C-shaped steel; a second horizontal plate part 63 extending in a horizontal direction from the pair of vertical plate parts 62, and opposing to or coming into contact with the outer surface of the flange 12 of the H-shaped steel; and a pair of swollen parts 64 swelling in a protrusion direction of the C-shaped steel 30 from the pair of vertical plate parts 62, and engaged with the web 31 or the lip part 34 of the C-shaped steel. At the pair of swollen parts 64, a screw hole 65 is formed at a place corresponding to the web 31 or the lip part 34 of the C-shaped steel.SELECTED DRAWING: Figure 4

Description

The present invention relates to a mounting device used for mounting a C-shaped steel as a preceding piece on the H-shaped steel, for example, in a work of installing a partition wall under the H-shaped steel.

Conventionally, when a partition wall is installed under the H-shaped steel, the construction is performed as follows, for example. First, on the lower side of the H-shaped steel, a plurality of C-shaped steels are arranged at equal intervals in the direction orthogonal to the H-shaped steel and attached to the flange of the H-shaped steel. Next, a runner extending parallel to the H-shaped steel is fixed to the lower surface of the C-shaped steel, and a plurality of studs extending vertically downward are provided on the lower surface of the runner, and gypsum board is attached to these studs. Mounting of C-shaped steel to H-shaped steel is usually performed by using a plurality of metal fittings at each mounting location. That is, at each mounting location, the C-shaped steel is attached to the flange of the H-shaped steel by the connecting metal fitting, and then the lower flange of the H-shaped steel and the connecting metal fitting are brought into close contact with each other by the fixing metal fitting.

However, in the above-mentioned conventional mounting device, especially in the case of a so-called projecting beam in which the C-shaped steel is fixed in a state of protruding from the H-shaped steel, the moment at the connecting portion between the H-shaped steel and the C-shaped steel becomes relatively large. There is a problem that the external force in the in-plane direction of the partition wall, that is, the strength performance in the direction orthogonal to the longitudinal direction of the C-shaped steel is insufficient.

An object of the present invention is to provide a mounting device and a connecting metal fitting that exhibit sufficient strength performance in a direction orthogonal to the longitudinal direction of the C-shaped steel even when the C-shaped steel protrudes from the H-shaped steel. ..

In the first invention, the C-shaped steel having the first and second flanges formed by bending both ends of the web is crossed with the H-shaped steel, and the first flange is brought into close contact with the outer surface of the flange of the H-shaped steel in a protruding state. It is a mounting device to fix. This mounting device includes a fixing bracket that is attached to the flange of the H-shaped steel and a connecting bracket for bringing the first flange into close contact with the outer surface of the flange of the H-shaped steel. A pair of vertical plate portions extending vertically from both ends of the portion and the first horizontal plate portion and engaging with the web or lip portion of the C-shaped steel, and a flange of the H-shaped steel extending horizontally from the pair of vertical plate portions. It has a second horizontal plate portion that faces or abuts on the outer surface, and a pair of bulging portions that bulge from the pair of vertical plate portions in the projecting direction of the C-shaped steel and engage with the web or lip portion of the C-shaped steel. A screw hole is formed in the bulging portion of the C-shaped steel at a portion corresponding to the web or lip portion of the C-shaped steel, and the fixing bracket presses the flange in the direction of bringing the outer surface of the flange of the H-shaped steel into close contact with the second horizontal plate portion. It is a feature.

It is preferable that the bulging portion is formed with a contact portion that abuts on the end face of the flange of the H-shaped steel. Further, in the screw holes formed in the pair of bulging portions, the distances from the end faces of the flanges of the H-shaped steel may be different from each other.

In the second invention, the C-shaped steel having the first and second flanges formed by bending both ends of the web is crossed with the H-shaped steel and the first flange is brought into close contact with the outer surface of the flange of the H-shaped steel in a protruding state. It is a connecting metal fitting that constitutes a part of the mounting device to be fixed. This connecting fitting includes a first horizontal plate portion that is in close contact with the second flange, and a pair of vertical plate portions that extend vertically from both ends of the first horizontal plate portion and engage with the web or lip portion of the C-shaped steel. A second horizontal plate that extends horizontally from the pair of vertical plates and faces or abuts on the outer surface of the flange of the H-shaped steel, and a web or lip of the C-shaped steel that bulges from the pair of vertical plates in the protruding direction of the C-shaped steel. It has a pair of bulging portions that engage with, and is characterized in that screw holes are formed in the pair of bulging portions at locations corresponding to the web or lip portions of the C-shaped steel.

According to the present invention, even when the C-shaped steel protrudes from the H-shaped steel, it is possible to obtain a mounting device and a connecting metal fitting that exhibit sufficient strength performance in a direction orthogonal to the longitudinal direction of the C-shaped steel.

It is a perspective view which shows the assembly body using the attachment device which is one Embodiment of this invention. It is a perspective view which shows the 1st process which attaches 1st fixing metal fitting to C-shaped steel. It is a perspective view which shows the 2nd process of temporarily fixing a C-shaped steel to an H-shaped steel by a 1st fixing metal fitting. It is a perspective view which shows the 3rd process of mounting a connecting metal fitting between C-shaped steel and H-shaped steel. It is a perspective view which shows the 4th process of temporarily fixing a C-shaped steel to an H-shaped steel by a connecting metal fitting and a 2nd fixing metal fitting. It is a perspective view which shows the 5th process of fixing a 1st fixing metal fitting and a 2nd fixing metal fitting. It is a perspective view which shows the connecting metal fittings. It is a perspective view which shows the structure which combined the connecting metal fitting and the pair of 2nd fixing metal fittings. It is the bottom view which showed the state which the C-shaped steel was fixed to the H-shaped steel by the connecting metal fitting and the pair of the second fixing metal fittings, and was seen from the lower side of the H-shaped steel. It is a figure which shows the force acting on the assembly body which has an H-shaped steel, a C-shaped steel, and a wall.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an assembly 10 using the mounting device according to the embodiment of the present invention. In this assembly 10, the wall 20 is fixed to the H-shaped steel 11 via the C-shaped steel 30. The H-shaped steel 11 is installed in parallel with the ceiling of the building, for example, and is a part of the frame of the building. A plurality of C-shaped steels 30 are fixed to the lower flange 12 of the H-shaped steel 11, and these C-shaped steels 30 intersect the H-shaped steel 11 and are fixed in a state of protruding from the lower flange 12. That is, the C-shaped steel 30 is a projecting beam (cantilever), and a runner 21 extending in parallel with the H-shaped steel 11 is fixed to the lower surface of the tip portion thereof. The runner 21 is the upper edge of the wall 20.

The runner 21 is a channel steel, and the groove is arranged downward, and the web thereof is fixed to the flange of the C section steel 30. The upper ends of the plurality of studs 22 are fitted and fixed in the grooves of the runner 21. The studs 22 are arranged at predetermined intervals, and gypsum boards 23 are attached to both sides of a frame composed of the runner 21 and the studs 22 to form a wall 20.

The C-shaped steel 30 has a normal configuration and includes first and second flanges 32 and 33 formed by bending both upper and lower ends of the web 31, and the tips of these flanges 32 and 33 are bent in parallel with the web 31. The flap portions 34 and 35 are formed. One end of the C-shaped steel 30 in the longitudinal direction is fixed to one end of the flange 12 of the H-shaped steel 11 in the width direction by the first fixing bracket 40. The other end of the C-shaped steel 30 in the longitudinal direction protrudes from the other end in the width direction of the flange 12, and the upper surface of the web of the runner 21 is fixed by the screw. The intermediate portion of the C-shaped steel 30 is fixed to the other end of the flange 12 of the H-shaped steel 11 in the width direction by two second fixing metal fittings 50 and a connecting metal fitting 60. The second fixing bracket 50 and the connecting bracket 60 constitute a mounting device according to an embodiment of the present invention.

Both the first and second fixing brackets 40 and 50 are attached to the flange 12 of the H-shaped steel 11, but their functions and structures are different. That is, the first fixing bracket 40 fixes the C-shaped steel 30 to the H-shaped steel 11 by itself, and the second fixing bracket 50 fixes the C-shaped steel 30 to the H-shaped steel 11 in cooperation with the connecting fitting 60.

The configuration of the first fixing bracket 40 will be described with reference to FIGS. 2 and 3. The first fixing bracket 40 is formed by bending a metal plate into a Z shape, and the first horizontal plate portion 41 is fixed to the first flange 32 of the C-shaped steel 30 by a screw 42. The vertical plate portion 43 extending in the vertical direction from the first horizontal plate portion 41 abuts on the end surface of the lower flange 12 of the H-shaped steel 11, and the second horizontal plate portion 44 extending in the horizontal direction from the vertical plate portion 43 is a bolt 45 and a nut. It is fixed to the upper surface of the lower flange 12 by 46.

The configuration of the second fixing bracket 50 and the connecting bracket 60 will be described with reference to FIGS. 4, 7, and 8. The second fixing bracket 50 is formed by bending a metal plate and is attached to the lower flange 12 of the H-shaped steel 11. The second fixing bracket 50 is a second horizontal plate portion 51 bent perpendicular to the first horizontal plate portion 51, the first vertical plate portion 52 extending vertically downward from the first horizontal plate portion 51, and the first vertical plate portion 52. And a third vertical plate portion 53, 54. The first horizontal plate portion 51 faces the upper surface of the lower flange 12, and is fixed to the lower flange 12 by bolts 55 and nuts 56. The first vertical plate portion 52 is provided with a screw hole 57 through which a screw for fixing the second fixing metal fitting 50 and the connecting metal fitting 60 to the C-shaped steel 30 penetrates. The second and third vertical plate portions 53 and 54 abut on the connecting metal fitting 60.

The connecting metal fitting 60 is formed by bending a metal plate and is used to bring the first flange 32 of the C-shaped steel 30 into close contact with the outer surface (lower surface) of the lower flange 12 of the H-shaped steel 11. The connecting metal fitting 60 includes a first horizontal plate portion 61, a pair of vertical plate portions 62 extending vertically upward from both ends of the first horizontal plate portion 61, and a second horizontal plate portion 63 extending in the horizontal direction from the vertical plate portion 62. , A pair of bulging portions 64 connected to a pair of vertical plate portions 62.

The first horizontal plate portion 61 is in close contact with the second flange 33 of the C-shaped steel 30, and a screw hole 67 through which a screw for fixing to the second flange 33 penetrates is formed. The vertical plate portion 62 engages with the web 31 or the lip portion 34 of the C-shaped steel 30. The second horizontal plate portion 63 faces or abuts on the outer surface of the lower flange 12 of the H-shaped steel 11. The pair of bulging portions 64 bulges from the vertical plate portion 62 in the projecting direction (protruding direction) of the C-shaped steel 30, and the bulging portions 64 are located at locations corresponding to the web 31 or the lip portion 34 of the C-shaped steel 30. The screw hole 65 is formed. The screw hole 65 corresponds to the position of the screw hole 57 of the second fixing bracket 50. Further, the end surface of the bulging portion 64 on the second horizontal plate portion 63 side is an abutting portion 66 that abuts on the end surface of the lower flange 12 of the H-shaped steel 11.

Next, a work process of attaching and fixing the C-shaped steel 30 to the H-shaped steel 11 will be described with reference to FIGS. 2 to 6. In this example, the C-shaped steel 30 intersects the H-shaped steel 11 and is fixed in a state of protruding from the H-shaped steel 11.

In the first step (FIG. 2), the first fixing bracket 40 is attached to the upper surface of one end of the first flange 32 of the C-shaped steel 30 by a screw 42. In the second step (FIG. 3), the lower flange 12 of the H-shaped steel 11 is sandwiched between the second horizontal plate portion 44 of the first fixing bracket 40 and the first flange 32 of the C-shaped steel 30 so that C The section steel 30 is positioned with respect to the H-section steel 11. Then, the bolt 45 is turned and fixed to the upper surface of the lower flange 12 with a predetermined pressing force, and the C-shaped steel 30 is temporarily fixed to the H-shaped steel 11 by the first fixing bracket 40.

In the third step (FIG. 4), the connecting metal fitting 60 is mounted between the C-shaped steel 30 and the lower flange 12 of the H-shaped steel 11. The connecting metal fitting 60 is fitted to the C-shaped steel 30 so that the first horizontal plate portion 61 abuts on the lower surface of the second flange 33 of the C-shaped steel 30, and the contact portion 66 abuts on the end surface of the lower flange 12. It is determined at the position where it touches.

In the fourth step (FIG. 5), the pair of second fixing brackets 50 are attached to the lower flange 12. At this time, in the second solid metal fitting 50, the lower surface of the first horizontal plate portion 51 faces the upper surface of the lower flange 12, and the upper end of the third vertical plate portion 54 faces the lower surface of the second horizontal plate portion 63 of the connecting metal fitting 60. It is mounted so that it abuts. Further, in this state, the second vertical plate portion 53 of one of the second fixing brackets 50 abuts on the bulging portion 64 of the connecting bracket 60, and the third vertical plate portion 54 of the other second fixing bracket 50 abuts on the connecting bracket. It abuts on the vertical plate portion 62 of 60. Here, the screw 68 is inserted into the screw hole 67 (see FIG. 4) of the connecting metal fitting 60, and the connecting metal fitting 60 is fixed to the second flange 33 of the C-shaped steel 30. Then, the bolt 55 is turned and fixed to the upper surface of the lower flange 12 with a predetermined pressing force, and the C-shaped steel 30 is temporarily fixed to the H-shaped steel 11 by the second fixing metal fitting 50 and the connecting metal fitting 60.

In the fifth step (FIG. 6), the final tightening is performed, and the C-shaped steel 30 is firmly fixed to the H-shaped steel 11. First, in the first fixing bracket 40, the bolt 45 becomes non-rotatable with respect to the second horizontal plate portion 44 by turning the nut 46, and the C-shaped steel 30 has the lower flange 12 of the H-shaped steel 11 by the first fixing bracket 40. It is firmly fixed to.

Similarly, in the second fixing bracket 50, by turning the nut 56, the bolt 55 becomes non-rotatable with respect to the lower flange 12, and the second fixing bracket 50 is connected to the outer surface of the lower flange 12 of the H-shaped steel 11. The C-shaped steel 30 is firmly fixed to the H-shaped steel 11 by pressing in a direction in which the metal fitting 60 is brought into close contact with the second horizontal plate portion 63. Further, the screw 58 is passed through the screw hole 57 of the second fixing metal fitting 50 and the screw hole 65 of the connecting metal fitting 60, and the screw 58 is screwed to the web 31 and the lip portion 34 of the C-shaped steel 30. As a result, the C-shaped steel 30 is more firmly fixed to the lower flange 12.

FIGS. 8 and 9 show a structure in which a connecting metal fitting 60 and a pair of second fixing metal fittings 50 are combined. In these figures, in the second fixing bracket 50 shown on the right side, the corner portion between the first vertical plate portion 52 and the second vertical plate portion 53 abuts on the bulging portion 64 of the connecting fitting 60, and is shown on the left side. In the second fixing bracket 50, the second vertical plate portion 53 is in contact with the bulging portion 64. Further, in the second fixing bracket 50 shown on the right side, the third vertical plate portion 54 abuts on the vertical plate portion 62 of the connecting fitting 60, and in the second fixing bracket 50 shown on the left side, the first vertical plate portion 52 and the first vertical plate portion 52. The corners between the three vertical plate portions 54 are in contact with the vertical plate portion 62 of the connecting metal fitting 60.

As described above, the left and right second fixing metal fittings 50 have different parts that come into contact with the connecting metal fittings 60, and the widths of the second vertical plate portion 53 and the third vertical plate portion 54 are also different. Therefore, the second vertical plate portion 52 The angle formed by the vertical plate portion 52 of the connecting metal 60 is different from that of the vertical plate portion 52. Therefore, in a state where the second fixing bracket 50 is fixed to the connecting bracket 60 and the C-shaped steel 30 by the screw 58, the angle formed by the screw 58 with respect to the longitudinal axis of the C-shaped steel 30 differs between the left and right second fixing brackets 50. In the illustration, the angle A on the right side is 75.7 ° and the angle B on the left side is 62.6 °. That is, the positions where the screws 58 are attached are relatively different in the connecting metal fittings 60, and as shown in FIG. 7, in the screw holes 65 formed in the pair of bulging portions 64, the contact portion 66, that is, the H-shaped steel 11 The distances from the end faces of the flange 12 are different from each other.

The effects of this embodiment will be described with reference to FIGS. 9 and 10. 10 (a) is a plan view of the assembled body 10 as viewed from above, and FIG. 10 (b) is a side view of the assembled body 10 as viewed from the longitudinal direction of the H-shaped steel 11. As described above, in the present embodiment, the connecting metal fitting 60 is provided with the bulging portion 64, and the bulging portion 64 is formed with a screw hole 65 at a position corresponding to the web 31 or the lip portion 34 of the C-shaped steel 30. Therefore, the connecting metal fitting 60 is firmly fixed to the C-shaped steel 30 at a desired position with high accuracy, and the connecting strength of the C-shaped steel 30 to the H-shaped steel 11 is improved. Therefore, even if the C-shaped steel 30 has a structure protruding from the H-shaped steel 11, sufficient strength performance in the in-plane direction (horizontal direction and vertical direction) acting on the wall 20 is exhibited.

11 H-shaped steel 12 Flange 30 C-shaped steel 31 Web 32 1st flange 33 2nd flange 34 Lip part 50 Fixing metal fittings 60 Connecting metal fittings 61 1st horizontal plate part 62 Vertical plate part 63 2nd horizontal plate part 64 Protruding part 65 Screw hole

Claims (6)

A mounting device in which a C-shaped steel having first and second flanges formed by bending both ends of the web is crossed with the H-shaped steel and is projected, and the first flange is brought into close contact with the outer surface of the flange of the H-shaped steel to be fixed. And,
The fixing bracket attached to the flange of the H-shaped steel and
A connecting metal fitting for bringing the first flange into close contact with the outer surface of the flange of the H-shaped steel is provided.
The connecting metal fitting has a first horizontal plate portion that is in close contact with the second flange and a pair of vertical plate portions that extend in the vertical direction from both ends of the first horizontal plate portion and engage with the web or lip portion of the C-shaped steel. A second horizontal plate portion extending horizontally from the pair of vertical plate portions and facing or abutting on the outer surface of the flange of the H-shaped steel, and bulging from the pair of vertical plate portions in the projecting direction of the C-shaped steel. It has a pair of bulging portions that engage with the web or lip portion of the C-shaped steel, and the pair of bulging portions is formed with screw holes at locations corresponding to the web or lip portion of the C-shaped steel.
The fixing bracket is a mounting device characterized in that the fixing bracket is pressed in a direction in which the outer surface of the flange of the H-shaped steel and the second horizontal plate portion are brought into close contact with each other. The mounting device according to claim 1, wherein a contact portion that abuts on the end surface of the flange of the H-shaped steel is formed in the bulging portion. The mounting device according to claim 2, wherein the distances from the end faces of the flanges of the H-shaped steel are different from each other in the screw holes formed in the pair of bulging portions. A mounting device in which a C-shaped steel having first and second flanges formed by bending both ends of the web is crossed with the H-shaped steel and is projected, and the first flange is brought into close contact with the outer surface of the flange of the H-shaped steel to be fixed. It is a connecting metal fitting that constitutes a part of
The first horizontal plate portion that is in close contact with the second flange and
A pair of vertical plate portions extending vertically from both ends of the first horizontal plate portion and engaging with the web or lip portion of the C-shaped steel.
A second horizontal plate portion extending horizontally from the pair of vertical plate portions and facing or abutting on the outer surface of the flange of the H-shaped steel, and a second horizontal plate portion.
It has a pair of bulging portions that bulge from the pair of vertical plate portions in the projecting direction of the C-shaped steel and engage with the web or lip portion of the C-shaped steel, and the pair of bulging portions have the C. A connecting metal fitting characterized in that a screw hole is formed in a portion corresponding to a web or a lip portion of a structural steel. The connecting metal fitting according to claim 4, wherein an abutting portion abutting on an end surface of the flange of the H-shaped steel is formed in the bulging portion. The connecting metal fitting according to claim 5, wherein the distances from the end faces of the flanges of the H-shaped steel are different from each other in the screw holes formed in the pair of bulging portions.

Images