JP6625443B2 - Ceiling mounting bracket and construction method - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for attaching a ceiling plate to a ceiling of a building without using a suspension bolt, and a construction method using the mounting bracket.

  In general, on the ceiling of a building, the upper part of a suspension bolt is fixed to a C-shaped steel, which is a structural material of the building, and a field support and a field edge are vertically and horizontally combined with a clip at the lower part of the suspension bolt via a hanger. A suspended ceiling is used that is joined in a state and a ceiling plate is fastened to a lower surface of a field edge.

  In such a suspended ceiling, when using a ceiling base having seismic resistance to prevent falling damage due to earthquake shaking, a certain level of required members and strength is required, and braces are passed diagonally up and down. Design considerations, such as forming a base material and providing a clearance at a predetermined portion, are also required. For example, Patent Literatures 1 to 3 below propose a hanging metal fitting for preventing a hanging bolt from being easily removed from a C-shaped steel.

  Suspended ceilings with seismic performance as described above are composed of a large number of members and have poor workability, causing problems such as increased costs and prolonged construction periods, and quality control items are diversified. There is also a problem that a great deal of effort is required to correct the malfunction. Furthermore, some ceilings cannot be handled due to restrictions such as lengths of suspension bolts and braces.

  As a countermeasure, it is conceivable to use a ceiling directly attached to a C-section steel without using a suspension bolt or the like, instead of a suspended ceiling. As a conventional directly-mounted ceiling, as shown in FIG. 13, one side of an upper portion of a short angle member 52 which is vertically oriented to a C-shaped steel member 51 is fixed with a screw, and another edge of a lower portion of the angle member 52 is connected to a field edge. In general, the receiver 53 is fixed with screws, the ridge 54 is attached to the ridge receiver 53 with a clip, and the ceiling plate 55 is fastened.

JP 2014-109142 A JP 2015-310004 A JP-A-2005-209696

  However, in the structure of the directly attached ceiling as described above, it is necessary to adjust the level while supporting the ridge receiver 53 during construction, and the ridge 54 is temporarily hooked on a base material such as the ridge receiver 53 to perform the level adjustment. Since the temporary storage cannot be performed, the burden on the worker is large, and there is a concern about safety, and further improvement in workability is demanded.

  Therefore, the present invention reduces the load while securing the safety of the construction work, improves the workability by facilitating the level adjustment, etc., and suppresses the increase in the number of conventional and new members to reduce defects. The task is to reduce costs.

  In order to solve the above-mentioned problems, the present invention comprises a base metal fitting wound around a C-shaped steel, which is a structural material of a building, and a main body metal fitting hooked on a rim and hooked on the base metal fitting. The level can be adjusted by raising and lowering the main body bracket, and a slit is formed in the base bracket to expose the reference line marked on the C-section steel. A vertically long screw hole that allows level adjustment is formed, and a pilot hole smaller in diameter than the width of this screw hole is drilled in the base bracket and the main body bracket, and a fixing screw smaller in diameter than this pilot hole. Has provided a ceiling fitting which is guided to a predetermined screwing position.

  Then, the base metal fitting is positioned on the C-shaped steel and wound by bending, and the main metal fitting is hung on a field edge so as to be twisted in the width direction thereof. By inserting the piece into the hanging groove through the introduction portion formed in the receiving piece of the base metal fitting, the main metal fitting is slidably hooked up and down with respect to the base metal fitting, and the main metal fitting is placed on the base metal fitting. Raise and lower the level of the ridge, adjust the base metal and the main metal by tightening screws to the C-section steel, fix the main metal to the ridge, and fasten the ceiling plate to the ridge. It was.

  When the mounting bracket according to the present invention is used, after the main body bracket is once hooked on the base bracket, subsequent work can be performed, so that the load can be reduced while ensuring the safety of the construction work, and the base bracket can be reduced. The level of the field edge can be easily adjusted as the main body fitting moves up and down, and the ceiling plate can be attached to the field edge so as to form a flat surface at a predetermined height.

  In addition, when the base metal is wound around the C-shaped steel, the reference line marked on the C-shaped steel can be exposed and positioned from the slit of the base metal, so that the position of the base material such as a field edge can be easily determined. At a predetermined position.

  Furthermore, the lower hole of the fixing screw is made smaller in diameter than the width of the vertically long screw hole formed in the main body fitting, and the fixing screw is guided to a predetermined screwing position. The fixing position of the metal fittings does not shift, and highly accurate construction is possible.

  As a result, the construction efficiency is improved, and the newly manufactured member is only the mounting bracket consisting of the base bracket and the main body bracket, and the conventional light material can be used. Can be reduced.

Exploded perspective view showing a mounting bracket, a C-shaped steel, and a ceiling plate according to an embodiment of the present invention. The perspective view which shows the initial process of winding the said base metal fitting to a C-shaped steel from the bottom. Perspective view showing the end step of the above from below The perspective view which shows the initial process of the hanging of the main body metal fitting to the field edge same as the above. Perspective view showing the end step of the above. Perspective view showing a state where a main body fitting is hooked on the base fitting same as the above. Perspective view showing the process of temporarily tightening screws Perspective view showing a level adjustment step of the same field edge. Perspective view showing a process of fixing the main body fitting and the base fitting to a C-shaped steel member. Perspective view showing a process of fixing a rim to a main body fitting of the above. The perspective view which shows the connection state of the same C-section steel and a field edge. Perspective view showing the construction state of a directly mounted ceiling using the same mounting bracket Perspective view showing the structure of a conventional general direct ceiling

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 12, a mounting bracket A according to the present invention includes a base bracket 1 wound around a C-shaped steel 51, which is a structural material of a building, and a base bracket hooked on a ridge 54. 1 and a main body fitting 2 to be hooked on.

  The C-shaped steel member 51 is a heavy-weight steel member in which a flange portion 51b and a lip portion 51c are sequentially provided at a lower end and an upper end of an upright web portion 51a, respectively. It is a light material in which a flange portion 54b and a lip portion 54c are sequentially provided on both side ends, respectively. A ceiling plate 55 such as a spandrel, which is a finishing material, is fixed to the web portion 54a of the ridge 54 with screws.

  The base 1 is made of a thin steel plate, and a lower plate 4 and a lower support 5 are sequentially provided at a lower end of a vertically long trunk 3, and an upper plate 6 and an upper support 5 are provided at an upper end of the main plate 3. 7 are sequentially provided, locking portions 8 and 9 are respectively provided at the distal ends of the lower holding portion 5 and the upper holding portion 7, and mounting pieces 10 are provided at both ends of the trunk plate portion 3. It has become.

  The introduction piece 11 is cut from the leading edge in the direction of the stem plate 3 in the receiving piece 10, and a hook groove 12 extending vertically from the deep end thereof is formed. A slit 13 is formed in the lower plate portion 4 so as to connect the trunk plate portion 3 side and the lower holding portion 5 side.

  The stem plate 3 is provided with a pilot hole 14 for screwing a screw used for fixing to the C-shaped steel 51. The diameter of the pilot hole 14 is even smaller than the diameter of the pilot hole 28 of the stem plate 21 of the main body fitting 2 described later.

  In the state before such a base metal fitting 1 is wound around the C-shaped steel 51, the lower plate portion 4 is bent to one side at a right angle with respect to the trunk plate portion 3 by press working in advance. On the other hand, the lower holding part 5 is bent upward at a right angle, and the locking part 8 is bent at a right angle in the direction of the trunk plate part 3 with respect to the lower holding part 5. The mounting piece 10 is bent at a right angle to the trunk plate 3 in a direction opposite to the lower plate 4.

  The boundary between the main plate part 3 and the upper plate part 6, the boundary part between the upper plate part 6 and the upper holding part 7, and the boundary part between the upper holding part 7 and the locking part 9 can be manually bent. As such, cuts are made in both side edges and in the middle.

  The main body fitting 2 is made of a steel plate thicker than the base fitting 1 and is formed in advance by press working, and has a vertically elongated stem plate portion 21 directed in the vertical direction, and front and back reciprocal sides from both lower portions where the width of the stem plate portion 21 is widened. Leg piece 22, the ear piece 23 which protrudes outward from both sides of the upper portion of the stem plate portion 21, and the guide piece 24 which is bent at a right angle from the both sides of the stem plate portion 21 to one side above the leg portion 22. , And two ribs extending vertically are formed on the stem plate portion 21.

  The width between the outer surfaces of the guide pieces 24 on both sides is slightly smaller than the width between the inner surfaces of the receiving pieces 10 on both sides of the base fitting 1.

  A holding notch 25 cut upward from the lower end is formed at a base of the straddle piece 22 on the side of the trunk plate 21, and a lower part of the trunk plate 21 is communicated with the holding notch 25 and straddled. A fitting notch 26 cut inward from below the base of the leg piece 22 is formed.

  The stem plate portion 21 has a vertically long oblong screw hole 27 formed at the center in the width direction, and a prepared hole 28 for screwing a fixing screw is formed above and below the screw hole 27. . The diameter of the pilot hole 28 is set to be considerably smaller than the width of the screw hole 27, and is smaller than の of the width of the screw hole 27. A prepared hole 29 having the same diameter as the prepared hole 28 is formed in the straddle piece 22 on the side of the holding notch 25.

  When a ceiling is constructed using the mounting bracket A as described above, as shown in FIG. 2, a reference line p is formed on the outer surface of the flange portion 51b below the C-shaped steel 51 by so-called black ink. Note that the upper plate 6 of the base fitting 1 is bent at a right angle to the trunk plate 3 in the same direction as the lower plate 4, and the base fitting 1 approaches the C-shaped steel 51 with the reference line p as a mark.

  Then, as shown in FIG. 3, the locking part 8 is hooked on the lip part 51 c below the C-shaped steel 51, and the base metal 1 is attached to the C-shaped steel 51 so that the reference line p is exposed from the slit 13. Position.

  Thereafter, the lower holding part 5, the lower plate part 4, the trunk plate part 3, and the upper plate part 6 of the base fitting 1 are connected to the lower lip part 51c, the flange part 51b, the web part 51a and the upper flange part of the C-shaped steel 51. The upper lip portion 51c is bent along the outer surface of the C-shaped steel 51 by bending the upper holding portion 7 downward and the locking portion 9 inward and upward sequentially. Then, the base metal fitting 1 is wound around the C-shaped steel 51.

  As shown in FIG. 4, the main body 2 is set upright with respect to the web portion 54 a of the ridge 54, and the main plate 2 is inclined with respect to the width direction of the ridge 54. It is assumed that the flange portions 54b on both sides of the field edge 54 are fitted into the holding notch 25 of the metal fitting 2.

  Then, as shown in FIG. 5, the body metal fitting 2 is rotated so as to be twisted with respect to the field edge 54, and the direction of the trunk plate 21 of the body metal fitting 2 is made to coincide with the width direction of the field edge 54.

  Thereby, the main body fitting 2 straddles the flange portions 54b on both sides of the field edge 54, the holding notches 25 of the main body fitting 2 hold the flange portions 54b on both sides of the field edge 54, and the fitting notches 26 The lip portion 54c of the edge 54 is fitted, the straddle piece 22 extends along the outer surface of the flange portion 54b of the field edge 54, and the main body fitting 2 is hooked on the field edge 54. In this hooked state, even when the main body fitting 2 is lifted, the ridge 54 does not fall.

  Next, as shown in FIG. 6, the ear piece 23 of the main body fitting 2 is inserted into the hanging groove 12 through the introduction portion 11 formed in the receiving piece 10 of the base fitting 1, and the trunk plate of the base fitting 1 is formed. The main body 2 is slidably and vertically hooked on the base 1 so that the guide piece 24 extends along the inner surface of the receiving piece 10 so that the portion 3 and the stem plate 21 of the main body 2 are overlapped.

  As a result of this hooking, the body fitting 2 and the ridge 54 are left in the base fitting 1, so that the body fitting 2 and the ridge 54 do not drop even if the hand is released from the ridge 54.

  Then, as shown in FIG. 7, a screw 30 which is a tapping screw having a hexagonal head is used, and a screw portion of the screw 30 is connected to the base metal fitting 1 through a screw hole 27 which is long in a vertical direction of the main body metal fitting 2. The stem plate 3 is made to protrude into the pilot hole 14 from the tip, and is penetrated through the stem plate 3 and screwed into the web portion 51a of the C-shaped steel 51 to temporarily tighten the screw 30.

  At this time, the screw 30 is screwed into the web portion 51a of the C-shaped steel member 51 having a large thickness by screwing the screw 30 into the impact wrench W to which the hexagon socket S is attached. Accidents such as a flying head are also prevented.

  In this state, as shown in FIG. 8, for example, the main body fitting 2 is moved up and down with respect to the base fitting 1 while measuring with a measure M with reference to a laser beam d of a laser level, etc. After the adjustment, the height of the edge 54 is determined, and the screw 30 that has been temporarily tightened is tightened to the final tightening state.

  Subsequently, as shown in FIG. 9, the screw portions of the other two screws 30 are inserted into the upper and lower pilot holes 28 of the stem plate portion 21 of the main body fitting 2 from the tips, respectively. The base metal fitting 1 and the main body metal fitting 2 are fixed to the C-shaped steel member 51 by a plurality of screws 30 by screwing the screws 30 into the web portion 51a of the C-shaped steel member 51 and tightening the screws 30.

  Thereafter, as shown in FIG. 10, using a screw 31 having a pan-shaped head, the screw portion of the screw 31 is inserted into the lower hole 29 of the straddle piece 22 of the main body fitting 2 from the tip to penetrate the straddle piece 22. Then, the main fitting 2 and the ridge 54 are fixed by screwing into the flange portion 54b of the ridge 54 with a screwdriver D and tightening the screw 31.

  Through the steps described above, as shown in FIG. 11, the C-shaped steel 51 and the ridge 54 are connected via the mounting bracket A.

  After forming the base of the directly attached ceiling in this manner, as shown in FIG. 12, a ceiling plate 55 such as a spandrel is fixed to the lower surface of the ridge 54 as a finishing material.

  As described above, when the mounting bracket A according to the present invention is used, after the main body fitting 2 is once hooked on the base fitting 1, subsequent work can be performed. It is possible to easily adjust the level of the ridge 54 as the body fitting 2 moves up and down with respect to the base fitting 1 and attach the ceiling plate 55 to the ridge 54 so as to form a flat surface at a predetermined height. it can.

  Further, when the base metal fitting 1 is wound around the C-shaped steel 51, the reference line p written on the C-shaped steel 51 can be exposed and positioned from the slit 13 of the base metal 1 so that the base metal 1 can be positioned. The street position of the base material can be easily adjusted to a predetermined position.

  Further, the pilot holes 14, 28 of the screw 30 are smaller in diameter than the width of the vertical screw hole 27 formed in the main body 2 so that the screw 30, which has a smaller diameter than the pilot holes 14, 28, is screwed in a predetermined manner. The fixing position of the mounting bracket A with respect to the C-shaped steel member 51 is not shifted, so that highly accurate construction can be performed.

  Thereby, the construction efficiency is improved, and the newly manufactured member is only the mounting bracket A including the base metal fitting 1 and the main body metal fitting 2, and the field edge 54, which is a conventional light material, can be used. Therefore, the cost required for ceiling work can be reduced.

  Also, even if the height of the space for installing the ceiling base material is small (there is no so-called place), even if the conventional base structure cannot meet the seismic specification, it is possible to construct a ceiling base with seismic performance, Property can be ensured.

REFERENCE SIGNS LIST 1 base metal fitting 2 main body metal fitting 3 stem plate part 4 lower plate part 5 lower holding part 6 upper plate part 7 upper holding part 8, 9 locking part 10 receiving piece 11 introduction part 12 hook groove 13 slit 14 pilot hole 21 stem plate Part 22 straddle piece 23 ear piece 24 guide piece 25 holding notch 26 fitting notch 27 screw hole 28, 29 pilot hole 30, 31 screw 51 C-shaped steel 51a web part 51b flange part 51c lip part 52 angle material 53 field Edge support 54 Field edge 54a Web portion 54b Flange portion 54c Lip portion 55 Ceiling plate A Mounting bracket D Driver M Major S Hex socket W Impact wrench d Laser beam p Reference line

Claims (5)

A base bracket (1) that is bent and wound around a C-shaped steel (51) that is a structural material of a building, and is hung in a twisting manner on a ridge (54) and can be raised and lowered with respect to the base bracket (1) And a main body bracket (2) that is hooked on
The base fitting (1) includes a stem plate (3), a lower plate (4), a lower holder (5), an upper plate (6), and an upper holder (3) along the outer surface of the C-shaped steel (51). 7) and locking portions (8, 9) hooked to the open ends of the C-shaped steel (51), and are provided on both sides of the stem plate (3) to separate from the C-shaped steel (51). The receiving piece (10) is directed in the direction of the main plate (10), the introduction piece (11) cuts in the direction of the stem plate (3) from the leading edge, and extends vertically from the back end A hanging groove (12) is formed,
The main body fitting (2) has a stem plate portion (21) overlapping the stem plate portion (3) of the base fitting (1), and along both sides outer surfaces of a field edge (54) facing in opposite directions from both lower sides thereof. The straddle piece (22) and the upper side of the stem plate (21) are protruded outward from both sides and inserted into the hanging groove (12) slidably in the vertical direction through the introduction part (11) of the base bracket (1). A holding notch (25) for holding a field margin (54) is provided at a lower portion of a portion from the straddle piece (22) to the stem plate portion (21). A notch (26) is formed to be fitted to the ridge (54) in communication with the
The base plate (3) of the base fitting (1) and the base plate (21) of the main body fitting (2) are fixed to the C-shaped steel (51) by screws (30) in an overlapping state. Mounting bracket.   The lower plate (4) of the base bracket (1) is marked on the outer surface of the C-shaped steel (51) for positioning so as to connect the side of the stem plate (3) and the lower holder (5). The ceiling fitting according to claim 1, wherein a slit (13) for exposing the reference line (p) is formed.   The stem plate (21) of the body fitting (2) is provided with a vertically long screw hole (27) for inserting a screw (30) fixed to the C-shaped steel (51). The ceiling mounting bracket according to claim 1 or 2, wherein:   The stem plate (3) of the base fitting (1) and the stem plate (21) of the body fitting (2) are screwed into the fixing screw (30). A pilot hole (14, 28) smaller in diameter than the width of the long screw hole (27) is drilled, and a screw (30) smaller in diameter than this pilot hole (14, 28) is guided to a predetermined screwing position. The ceiling mounting bracket according to claim 3, wherein: A construction method for attaching a ceiling plate (55) to a C-shaped steel (51), which is a structural material of a building, using the ceiling fitting according to claim 1,
The base metal fitting (1) is positioned and bent on a C-shaped steel (51) to be wound around, and the main body metal fitting (2) is hung around a field edge (54) in the width direction thereof. Wear
Inserting the ear piece (23) of the main body fitting (2) into the hook groove (12) through the introduction portion (11) formed in the receiving piece (10) of the base fitting (1), the main body fitting With the (2) hooked slidably up and down on the base bracket (1), raise and lower the body bracket (2) with respect to the base bracket (1) to adjust the level of the field margin (54), and The screw (30) is fixed to the metal bracket (1) and the body metal (2) by tightening the screw (30) to the C-shaped steel (51), and the body metal (2) is fixed to the field edge (54) with the screw (31). Construction method of ceiling to fix ceiling board (55) to field edge (54).

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