JP6440012B2 - Hanging bolt fixing bracket - Google Patents

Description

The present invention relates to a suspension bolt fixing bracket for hanging and fixing a suspension bolt vertically on a C-shaped steel used as a main building material or hanging wood constituting a frame ceiling.

  Generally, a conventional ceiling in a flat roof or a sloped roof structure includes a plurality of suspension bolts whose upper ends are suspended and fixed to suspension bolt fixing brackets attached to a C-shaped steel constituting the frame ceiling portion at a predetermined interval. A channel-shaped field receiver supported by a field-hanging hanger at the lower end between these suspension bolts, and an inverted U-shaped groove inside the upper ends of both side surfaces that open upward, It is composed of a plurality of channel-shaped field edges that are attached to the field edge receiver via metal fittings, and a ceiling panel that is screwed to the field edge. In particular, the suspension bolt fixing bracket is manufactured as one member so that it can be used in correspondence with any construction state with respect to the C-type steel arranged and constructed with a horizontal or predetermined inclination angle according to the roof structure. What is desired is that a C-shaped steel and the ceiling base are differently swayed by shaking such as an earthquake. Therefore, it is desired that the weight of the entire ceiling base be firmly supported by the suspension bolts.

  By the way, the frame ceiling part in the sloped roof structure is attached to the C-shaped steel as the main building material that is attached in an inclined shape parallel to the purlin and around the axis, and to the C-shaped steel as the main building material, extending from the purlin to the eaves in an inclined manner. It is constructed with C-shaped steel as a rafter, but the conventional suspension bolt fixing metal fitting can be properly used for any C-type steel arrangement of the purlin material and the rafter (see Patent Document 1). 8 and 9), a C-shaped steel dedicated as a purlin material (see FIG. 5 of Patent Document 2), a C-shaped steel dedicated as hanging wood (refer to FIG. 1 of Patent Document 3), and the like are known. ing.

  However, in what was disclosed by patent document 1, the 1st member (11) of an inverted L shape which consists of an upright board part (9) and a side plate part (10) is formed in the shape of a U character in top view, Either one of the horizontal locking groove (15b) and the inclined locking groove (15c) formed in the side plate (10) by being cut out is selected and hooked on the lower flange portion (1a) on the opening side of the C-shaped steel. A connecting member (3) is configured by pivotally attaching a second member (12) having an L-shape in side view to which a suspension bolt is screwed and fixed to the standing plate (9). Since the tip is brought into contact with the inclined lower surface portion of the C-shaped steel and is fixed in a clamped state sandwiched in a point contact manner between the suspension bolt tip and the locking groove (15c), Suspension bolts when shaken by earthquakes, etc., especially when subjected to vibration loads that tilt around the axis including torsion Since the end is separated from the contact surface, rattling and misalignment are likely to occur, and the locking groove (15b) is disengaged from the lower flange portion (1a) due to the significant shaking of the entire ceiling base. ) May fall out, and there is a structural defect that the performance of the seismic strength is extremely inferior.

  Moreover, in what was disclosed by patent document 2, a connection metal fitting (1) is bent in the U shape for hooking and latching on the lower flange part of the opening side of C-shaped steel at the upper part of an upper side board part (3). A lower plate portion (2) bent in an L shape for screwing and fixing a suspension bolt to the lower portion of the upper plate portion (3). Since the lower plate part (2) is pushed and bent by bolts, it must be made of a thin plate material that can be bent and bent, and shakes due to earthquakes, especially in the direction around the axis including torsion. If it receives a vibration load that tilts, the hooking part (5) and the lower plate part (2) will be expanded and deformed easily, causing looseness and misalignment. There is a risk of distortion due to the addition, and there is a problem in seismic strength.

On the other hand, in the one disclosed in Patent Document 3, like the ones in Patent Documents 1 and 2, the hook piece (6) formed on the vertical plate portion (5a) is hooked on the lower flange portion on the opening side of the C-shaped steel. Since the attachment piece (8) bent in an L shape for screwing and fixing the suspension bolt is bent and the lower plate (2) is pushed and bent by the suspension bolt, the suspension piece is fixed in a clamped state. The hook piece (6) and the mounting piece (8) are expanded and deformed by a vibration load such as being shaken by an earthquake, etc. There is a problem in terms of seismic strength because there is a risk that rattling or slipping downward in the inclination of (5) is likely to occur, the suspension bolt cannot be maintained vertically, and the weight of the entire ceiling is added to cause distortion.
Therefore, those attached to the opening side of the C-shaped steel, such as these conventional ones, have a problem in terms of fixing strength that, when subjected to vibration in the tilting direction or torsional direction, the vibration load causes rattling or misalignment. In addition, there is a concern that a concentrated load is applied to the flange portion of the C-shaped steel and it may be deformed, and a desired seismic performance cannot be obtained.

Japanese Patent Laid-Open No. 11-062093 JP 2003-090100 A No. 07-035945

The present invention was devised to eliminate the above-mentioned problems, and can be used in any construction state with respect to C-type steel disposed and constructed in a horizontal or inclined manner on the ceiling of the frame. Although the suspension bolt can be suspended and fixed, it is not related to the conventional fixing structure in which the suspension is fixed from the opening side of the C-shaped steel. In the state where the screws are firmly fixed by the lower surface fixing portion and the side surface fixing portion that are faced to the two surfaces, the structure including the suspension bolt fixing portion and the three-piece integrated structure can increase the mounting rigidity and the suspension. Since the screw fixing surface of the bolt fixing part can always be arranged parallel to the ceiling panel side, it can be perpendicular to the screwing surface simply by screwing the suspension bolt, and it can be suspended and fixed vertically. Yes, and When subjected to horizontal, torsional, or tilting vibrations caused by earthquakes, etc., the fixed surface to the C-shaped steel can be prevented from slipping, separating, rattling, misalignment, etc. In addition, it is possible to improve the performance of seismic fixation strength for C-shaped steel, maintain the hanging position of the suspension bolts properly for a long time, and firmly support the weight of the whole ceiling and permanently maintain a good suspension state. It is an object of the present invention to provide a suspension bolt fixing bracket that can be held on the surface.

In order to solve the above-mentioned problems, a suspension bolt fixing bracket according to the present invention is a suspension bolt fixing bracket for hanging and fixing a suspension bolt vertically on a C-shaped steel constituting a casing ceiling portion, and fixing the suspension bolt. The bracket includes a lower surface fixing portion that is faced to the lower surface portion of the C-shaped steel and is screw-fixed, a side surface fixing portion that is faced to the side surface portion of the C-shaped steel and is fixed to the screw, and a suspension bolt to which the suspension bolt is screwed. A fixing portion, and the suspension bolt fixing portion is pivotally attached to the bottom surface fixing portion so that the suspension bolt can be vertically adjusted by adjusting the angle of the suspension bolt, and is disposed horizontally or at a predetermined inclination angle. With respect to the C-type steel, with the two surfaces of the lower surface fixing portion and the side surface fixing portion being face-to-surface fixed, the screwing surface of the suspension bolt fixing portion is arranged in parallel toward the ceiling panel side and the suspension bolt is suspended. Specially configured to hold It is an.

The present invention is configured as described above, so that the suspension bolt can be suspended and fixed to the C-shaped steel disposed and constructed in a horizontal or inclined manner at the ceiling of the frame, in any construction state. However, regardless of the conventional fixing structure that hangs and fixes from the opening side of the C-shaped steel, the lower surface that is faced to the two surfaces using the two surfaces of the lower surface and the side surface that are the non-opening side of the C-shaped steel In the state where the screw is firmly fixed by the fixing part and the side fixing part, the mounting rigidity strength can be increased by the structure in which these are included in a three-piece structure including the suspension bolt fixing part. Since the screw fixing surface of the bolt fixing part can always be arranged parallel to the ceiling panel side, it can be perpendicular to the screwing surface simply by screwing the suspension bolt, and it can be suspended and fixed vertically. it can In addition, it can prevent the fixed surface to C-type steel from slipping, separating, rattling, misalignment, etc. when subjected to horizontal, torsional, or tilting vibrations due to earthquakes, etc. Can improve the performance of seismic fixation strength against C-type steel, maintain the hanging posture of the suspension bolts favorably for a long time, and firmly support the weight of the whole ceiling and provide a good suspension state Can be held permanently.

It is a schematic side view of the frame ceiling part of the gradient roof structure which concerns on embodiment of this invention, and its ceiling foundation | substrate. It is a suspension bolt fixing bracket attached to C-shaped steel as a rafter according to an embodiment of the present invention, wherein (A) is a front view, (B) is a rear view, (C) is a side view, and (D) is a plan view. (E) is a bottom view. FIG. 2 is a suspension bolt fixing bracket shown in FIG. 2 according to the embodiment of the present invention, wherein (A) is an AA sectional view, (B) is a BB sectional view, and (C) is an angle adjustment explanatory view. . It is a suspension bolt fixing bracket attached to C-shaped steel as a purlin according to an embodiment of the present invention, wherein (A) is a front view, (B) is a rear view, (C) is a side view, and (D) is a plan view. (E) is a bottom view. FIG. 4 is a hanging bolt fixing metal fitting shown in FIG. 4 according to the embodiment of the present invention, in which (A) is a perspective view and (B) is an AA cross-sectional view. It is. The perspective view which shows the state which attached the suspension bolt fixing metal fitting shown in FIG. 2 to C-shaped steel, (A) is a front view which shows the state fixed to C-type steel arrange | positioned horizontally and constructed, (B) is a predetermined inclination angle It is a front view which shows the state fixed to the C-shaped steel arrange | positioned and constructed with. It is a perspective view which shows the state which attached the suspension bolt fixing metal fitting shown in FIG. 5 to C type steel. 5 shows a state where the suspension bolt fixing metal fitting shown in FIG. 5 is attached to the C-shaped steel, (A) is a side view showing a state where the suspension bolt is fixed to the C-shaped steel which is horizontally disposed and constructed, and (B) is a predetermined inclination angle on the opening side. The side view which shows the state fixed to the C-type steel arrange | positioned downward with C, and (C) is a side view which shows the state fixed to the C-type steel arrange | positioned upward with a predetermined inclination angle.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A suspension bolt fixing bracket illustrating an embodiment of the present invention as a preferred embodiment will be described below in detail with reference to the drawings. FIG. 1 is a schematic side view of a frame ceiling part and its ceiling base in a gradient roof structure according to an embodiment of the present invention. The frame ceiling portion 1 shown in this figure is constructed by C-type steel 11 as a rafter that is attached to a C-type steel 12 as a main building material in an inclined manner from a purlin to an eaves girder. A plurality of suspension bolts 3 are fixed to the suspension bolts 2a and 2b, which are attached to the suspension bolts 11 and 12 with a predetermined interval, by screwing the upper ends thereof and suspended between the suspension bolts 3. A field edge receiver 4 (ceiling base material) supported on the lower end of the suspension bolt 3 via a field edge hanger 41 and an upper surface side of the field edge receiver 4 via a steady rest 51. A seismic reinforcing base material 5 (ceiling base material) is included.

The field edge receiving hanger 41 is formed in an abbreviated shape when viewed from the side. For example, the field edge receiving hanger 41 is connected to the lower end of the suspension bolt 3 so that the vertical position can be adjusted, and the field edge receiving 4 is supported by the field edge receiving hanger 41. The vertical position is adjusted by changing the position of the field edge hanger 41 with respect to the suspension bolt 3.
The field receiver 4 is made of a channel material having a U-shaped cross-section that opens on the side, and is assigned to the frame ceiling portion 1 in parallel with a predetermined interval. At this time, the field edge receiver 4 is processed in advance so as to have a short length that does not come into contact with a not-shown chassis wall part, and both ends thereof are fixed to the chassis wall part via the field edge receiving fixture.

  2A to 2E are a front view, a rear view, a side view, a plan view, and a bottom view of a suspension bolt fixing bracket 2a attached to a C-shaped steel 11 as a rafter, respectively. ) To (C) are AA sectional view, BB sectional view, and angle adjustment explanatory view of the suspension bolt fixing metal fitting 2a shown in FIG. 4A to 4E are a front view, a rear view, a side view, a plan view, and a bottom view, respectively, of the suspension bolt fixing bracket 2b attached to the C-shaped steel 12 as the main building. (A) and (B) are the perspective views and AA sectional drawing of the suspension bolt fixing metal fitting 2b shown in FIG. As shown in these drawings, the suspension bolt fixing brackets 2a and 2b of the present embodiment are formed of a thick plate material having a plate thickness of about 2 mm or thicker or substantially the same as that of the C type steels 11 and 12, and the C type steel 11 The lower surface fixing portion 21 that is faced to the lower surface portion of the screw 12 and fixed with screws, and the side surface fixing portion 22 that is formed with the screw holes 222 that are faced to the side surface portions of the C-shaped steels 11 and 12 and fixed with screws. And a suspension bolt fixing portion 23 to which the suspension bolt 3 is screwed.

  The suspension bolt fixing portion 23 is pivotally attached to the lower surface fixing portion 21 so that the suspension bolt 3 is angle-adjusted so as to be maintained vertically, and is horizontally or at a predetermined inclination angle C-type steel 11, 12. On the other hand, with the two surfaces of the lower surface fixing portion 21 and the side surface fixing portion 22 fixed against each other, the screwing surface of the suspension bolt fixing portion 23 is arranged in parallel toward the ceiling panel side and the suspension bolt 3 is suspended. Configured to hold.

That is, as shown in FIGS. 2 and 3, the suspension bolt fixing metal fitting 2 a attached to the C-shaped steel 11 includes a lower surface fixing piece 211 in which the lower surface fixing portion 21 is fixed to the lower surface portion of the C-shaped steel 11. The lower surface connecting piece 212 is overlapped with the side surface connecting piece 232 and rotatably mounted on the rivet 24 so as to be bent in an inverted L shape when viewed from the side. The lower surface fixing piece 211 has two screw holes 213 that are fixed to the lower surface portion of the C-shaped steel 11 at two locations. The lower surface connecting piece 212 is formed in an inverted trapezoidal shape, and the C-shaped steel 11 of the lower surface fixing piece 211 is formed. The fixed surface area with respect to is wide and the seismic fixed strength is increased.
Further, the side surface fixing portion 22 is composed of a plate-like side surface fixing piece 221 that is brought into contact with the side surface portion of the C-shaped steel 11, and the lower surface fixing piece 211 is screwed to the lower surface portion of the C-type steel 11 through screw holes 213 and 213. The screw is fixed by the screw hole 222 by adjusting the angle from the fixed state to the vertical posture.

The suspension bolt fixing portion 23 includes a suspension bolt screwing piece 231 that extends from the lower side of the side surface fixing piece 221 and is bent toward the lower surface side of the C-shaped steel 11, a lower surface connecting piece 212, and a rivet 24. Are formed in a U-shape as viewed from the side, and are formed in a side-view shape as a single unit by press molding with the side-fixing piece 221. It has been. The suspension bolt screwing piece 231 is provided with a nut portion 233 with a tapped hole into which the tip of the suspension bolt 3 is screwed, and the tip portion facing the lower surface fixing piece 211 of the side connection piece 232 is fixed to the side surface. When the pieces 221 (the suspension bolt screwing pieces 231) are rotationally adjusted, they are formed in an arc shape so as not to contact each other.
If comprised in this way, in the state firmly screw-fixed to two surfaces of the C-shaped steel 11 by the lower surface fixing part 21 and the side surface fixing part 22 which were integrally formed, these including the suspension bolt fixing | fixed part 23 were united in three. The structure can be attached with increased mounting rigidity.

On the other hand, as shown in FIGS. 4 and 5, the suspension bolt fixing bracket 2 b attached to the C-shaped steel 12 has a lower surface fixing portion 21 extending the lower side of the side surface fixing piece 221, It has a lower surface piece 214 and a rising piece 215 that are bent in the shape of a letter when viewed from the side, and both sides of the lower surface piece 214 are bent upward so as to sandwich both ends of the side fixing pieces 221. The lower surface connecting pieces 212 and 212 that are U-shaped when viewed from the front, and the lower surface fixing that is fixed to the lower surface portion of the C-shaped steel 12 that is bent in a reverse L shape when viewed from the side on both sides of the lower surface connecting pieces 212 and 212. It has a piece 211 and is integrally formed with the side surface fixing piece 221 by press molding. Screw holes 213 and 213 for fixing screws to the lower surface portion of the C-shaped steel 12 are formed in the lower surface fixing pieces 211 and 211, respectively, and the side surface fixing pieces 221 and screw holes are formed in the lower surface connecting pieces 212 and 212, respectively. The side connection piece 232 is bolted by the connection bolt 25 through a bolt insertion hole formed between the holes 213. A cutout groove 216 having an L-shape in cross section is punched and formed in a portion of the lower surface piece 214 facing the nut portion 233 so that the tip of the suspension bolt 3 can be inserted into the lower side extending piece of the side surface fixing piece 221. ing.
Further, the side surface fixing portion 22 includes a plate-like side surface fixing piece 221 in which a screw hole 222 faced to the side surface portion of the C-shaped steel 12 is formed. The screw is firmly fixed together with the lower surface fixing piece 211.

  The suspension bolt fixing portion 23 is formed in a concave shape by a wide suspension bolt screwing piece 231 and side connection pieces 232 and 232 bent in opposite L-shapes on both sides of the suspension bolt screwing piece 231. The side connection pieces 232 and 232 and the lower connection pieces 212 and 212 are overlapped with each other and externally fitted, and tightened by the connection bolt 25 through a bolt insertion hole formed close to the side fixing piece 221 side. It is inserted so that it can be operated, and is pivotally attached in a state where it protrudes outward from the side surface fixing portion 22 (side surface fixing piece 221). The suspension bolt screwing piece 231 has a nut portion 233 having a tapped hole for screwing the distal end side of the suspension bolt 3 into a central position where the distal end of the suspension bolt 3 comes into contact with the outer periphery of the connecting bolt 25. The tip of the side connection piece 232 that faces the lower surface fixing piece 211 has a predetermined inclination angle (about 30 to 35 degrees) when the side surface fixing piece 221 (the suspension bolt screwing piece 231) is rotationally adjusted. In the range of), the outer side of the side connection piece 232 is cut away in a trapezoidal shape so as not to contact each other and exceeds a predetermined inclination angle. The portion is in contact with the lower surface fixing piece 211 and is subjected to angle regulation (rotation regulation).

  With this configuration, the side fixing piece 221 and the bottom fixing piece 211 are vertically fixed by the weight of the suspension bolt 3 screwed to the suspension bolt screwing piece 231 in a state where the screw is fixed to the side and bottom portions of the C-shaped steel 12. Not only is the angle adjusted to the posture, but even when the connection bolt 25 is tightened and externally fitted in a loosely fitted state, the two are firmly adhered to the side fixing piece 221 formed with the side fixing piece 221 sandwiched therebetween. In addition, the suspension bolt 3 is screwed to be inserted into the notch groove 216 and the tip of the suspension bolt 3 is brought into contact with the outer periphery of the connection bolt 25, so that the suspension bolt fixing portion 23 can be prevented from wobbling due to play. In addition, a structure in which these, including the suspension bolt fixing portion 23, are three-piece integrated in a state where the screw is firmly fixed to two surfaces of the C-shaped steel 11 by the integrally formed lower surface fixing portion 21 and side surface fixing portion 22. It can be attached to increase more mounting rigidity and strength.

Next, FIG. 6 and FIG. 7 show attachment procedures when the suspension bolt fixing brackets 2a and 2b according to the embodiment of the present invention are attached to the C-shaped steels 11 and 12, respectively, and the suspension bolt 3 is suspended and fixed. Each will be described with reference to FIG.
First, when attaching the suspension bolt fixing bracket 2a to the C-shaped steel 11, FIG. 6 (A) is a front view showing a state in which it is fixed to the C-shaped steel 11 that is horizontally disposed and constructed, and FIG. It is a front view which shows the state fixed to the C-shaped steel arrange | positioned and constructed with the inclination angle of. As shown in these figures, the lower surface fixing piece 211 and the side surface fixing piece 221 are respectively brought into contact with two surfaces of the lower surface portion and the side surface portion of the C-shaped steel 11, and the lower surface fixing piece 211 is attached to the lower surface portion of the C-shaped steel 11. 213 is fixed with screws. When the side surface fixing portion 22 is vertically adjusted from the state in which the lower surface fixing piece 211 is screw-fixed and screw-fixed by the screw hole 222, a screwing surface of the suspension bolt fixing portion 23 integrally formed with the side surface fixing piece 221 is obtained. The suspension bolt screwing pieces 231 are inevitably arranged in parallel toward the ceiling panel, and the attachment work of the suspension bolt fixing bracket 2a to the C-shaped steel 11 can be easily completed by fixing at three points. After that, if the tip end side of the suspension bolt 3 is screwed into the nut portion 233, the suspension bolt inevitably becomes orthogonal to the suspension bolt screwing piece 231. The suspension bolt 3 can be suspended and fixed in a state where the suspension bolt 3 is necessarily held vertically. Alternatively, the hanger bolt 3 may be screwed from the state in which the lower surface fixing piece 211 is screw-fixed, and the side surface fixing piece 221 may be screw-fixed after hanging down using its own weight.

  On the other hand, in the case where the suspension bolt fixing bracket 2b is attached to the C-shaped steel 12, FIG. 7 is a perspective view thereof, and FIG. 8A is a front view showing a state of being fixed to the C-shaped steel 12 that is horizontally disposed and constructed. FIG. 8B is a side view showing a state in which the opening side is fixed to the C-shaped steel 12 disposed downward with a predetermined inclination angle, and FIG. 8C is an upward arrangement with the predetermined opening angle of the opening side. It is a side view which shows the state fixed to the C-shaped steel 12 made. As shown in these drawings, the lower surface fixing piece 211 and the side surface fixing piece 221 are respectively brought into contact with two surfaces of the lower surface portion and the side surface portion of the C-shaped steel 12, and the lower surface fixing piece 211 is attached to the lower surface portion of the C-shaped steel 12. By fixing the screws through 213 and 213 and fixing the side surface fixing piece 221 to the side surface of the C-shaped steel 12 through the screw holes 222, the attachment work of the suspension bolt fixing bracket 2b to the C-shaped steel 12 is fixed at three points. Can be completed more easily. In this fixed state, the suspension bolt fixing portion 23 is tightened with the connecting bolt 25, and the suspension bolt screwing pieces 231 serving as the screwing surface of the suspension bolt fixing portion 23 are arranged in parallel toward the ceiling panel side. Adjust the angle to the vertical posture.

Next, if the front end side of the suspension bolt 3 is screwed to the nut portion 233, the suspension bolt inevitably becomes orthogonal to the suspension bolt screwing piece 231, and the suspension bolt 3 is also angle-adjusted to the vertical posture by its own weight, The screwing pieces 231 are inevitably arranged in parallel to the ceiling panel side, and the screwing operation allows the tip of the suspension bolt 3 to be inserted into the notch groove 216 and brought into contact with the outer periphery of the connecting bolt 25 so as to be vertical. It can be fixed in a suspended state while being held. After that, if the side connection pieces 232 and 232 and the lower surface connection pieces 212 and 212 are brought into pressure contact with each other by tightening operation of the connection bolt 25, the suspended fixing state of the suspension bolt 3 can be maintained.

  In the embodiment of the present invention configured as described above, the C-shaped steels 11 and 12 arranged and constructed in the horizontal or inclined shape in the ceiling body 1 are now attached to the C-shaped steels 11 and 12 via the suspension bolt fixing brackets 2a and 2b. The suspension bolt 3 is suspended and fixed. The suspension bolt fixing brackets 2a and 2b according to the present invention are a bottom surface fixing portion 21 which is fixed to a bottom surface of the C-shaped steels 11 and 12 by screws and a C-shaped steel 11. , 12 and a side fixing part 22 fixed to the side face by screws and a suspension bolt fixing part 23 to which the suspension bolt 3 is screwed. The suspension bolt fixing part 23 is attached to the lower surface fixing part 21. The lower surface fixing portion 21 and the side surface fixing portion are attached to the C-shaped steels 11 and 12 that are rotatably attached to the suspension bolt 3 so that the suspension bolt 3 can be adjusted to maintain the vertical position. 2 faces with 22 In the constant state, has become one screwing surfaces of the hanging bolt fixing portion 23 is configured to droop holding bolts 3 hanging are arranged parallel toward the ceiling panel.

  With this configuration, the suspension bolt 3 can be suspended and fixed to the C-shaped steels 11 and 12 that are disposed and constructed in a horizontal or inclined manner in the housing ceiling 1 while being used in any construction state. Regardless of the conventional fixing structure that hangs down from the opening side of the C-shaped steels 11 and 12, the two surfaces of the C-shaped steels 11 and 12, which are the non-opening side and the side surface part, are used. With the lower surface fixing portion 21 and the side surface fixing portion 22 applied, fixing work such as perpendicularity, leveling and positioning can be easily performed, and not only can work efficiency be improved, but also the screws are firmly fixed. The mounting rigidity strength can be increased by the three-piece structure including the suspension bolt fixing portion 23, and the fixing surface allows the screwing surface (the suspension bolt) of the suspension bolt fixing portion 23 to be fixed. Since the threaded piece 231) can always be arranged in parallel with the ceiling panel side, the threaded surface (or the suspended bolt threaded piece 231) is orthogonal to the threaded surface by simply screwing the suspension bolt 3 into the nut portion 233. It can be fixed in a suspended state while being held vertically.

  Moreover, it is not necessary to fix the suspension bolt fixing brackets 2a and 2b in the clamped state by bringing the tip of the suspension bolt 3 into contact with the lower surface of the C-shaped steels 11 and 12, and the horizontal direction, twisting, and tilting direction due to shaking such as an earthquake. When the vibration is received, there is no burden of a fixed load on the opening side of the C-shaped steels 11 and 12, and there is no fear that the C-shaped steels 11 and 12 themselves (particularly the lower flange portion) will be deformed. The bottom surface fixing portion 21 and the side surface fixing portion 22 share the load well in a state where the bottom surface portion 12 and the side surface portion are firmly and firmly fixed to the two surfaces of the bottom surface portion and the side surface portion. Sliding, separating, rattling, positional misalignment, etc. are regulated between the fixing piece 211 and the side fixing piece 221), and generation, deformation, amplification of vibration due to resonance action, etc. are comprehensively prevented, and danger of falling off. The seismic strength and the seismic performance for the C-shaped steels 11 and 12 can be dramatically improved even if a vibration different from that of the ceiling base is generated, and the hanging posture of the suspension bolt 3 can be suitably maintained over a long period of time. It can be maintained and the weight of the entire ceiling can be firmly supported to maintain a good suspended state permanently.

  In addition, the suspension bolt fixing bracket 2a attached to the C-shaped steel 11 as the rafter extends the lower side of the side fixing portion 22 (side fixing piece 221) from the suspension bolt fixing portion 23, and A suspension bolt screwing piece 231 bent toward the lower surface portion side and a side connection piece 232 pivotally attached to the lower surface fixing portion 21 are formed integrally with the side surface fixing portion 22 in a U shape in a side view. The lower surface fixing portion 21 is bent in an inverted L shape in a side view by a lower surface fixing piece 211 that is fixed to the lower surface portion of the C-shaped steel 11 and a lower surface connection piece 212 that rotatably mounts the side surface connection piece 232. The side surface fixing portion 22 (side surface fixing piece 221) is abutted against the side surface portion of the C-shaped steel 11 and the bottom surface fixing piece 211 is angle-adjusted from the state in which the screw is fixed to the bottom surface portion of the C-shaped steel 11 to the vertical posture. The screw is fixed.

  If comprised in this way, since the suspending bolt fixing | fixed part 23 is integrally formed with the side surface fixing | fixed part 22, in the state firmly screw-fixed to two surfaces of the C-shaped steel 11, these including the suspending bolt fixing | fixed part 23 are three-piece integral. In addition to being able to attach and increase the mounting rigidity strength by the structure, the suspension bolt 3 can be attached by fixing the screw by adjusting the angle of the side surface fixing portion 22 to the vertical posture from the state in which the lower surface fixing piece 211 is fixed by the screw. The suspension bolt fixing bracket 2a is attached to the C-shaped steel 11 in which the suspension bolt screwing pieces 231 to be the screwing surfaces are necessarily arranged in parallel toward the ceiling panel side and arranged in a horizontal or inclined manner. The angle adjustment operation at the time can be easily performed, and if the tip side of the suspension bolt 3 is screwed into the nut portion 233, the suspension bolt 3 is inevitably perpendicular to the suspension bolt screwing piece 231. Drooping It can be hanging fixed in a state of being held on.

  Moreover, even if the lower surface connecting piece 212 and the side surface connecting piece 232 are pivotally attached to each other, they are in a non-rotatable state when fixed to the C-shaped steel 11, and are horizontally or twisted by shaking such as an earthquake. An integrated structure that reliably receives the vibration load applied to the suspension bolt fixing portion 23 when it receives vibration in the tilting direction without causing any rotational vibration together with the lower surface fixing portion 21 and the side surface fixing portion 22, for example, Even when a vibration is applied in the width direction of the C-shaped steel 11 with the vibration of the side wall, the side surface fixing piece 221 and the bottom surface connecting piece 212 and the side surface connecting piece 232 that are overlapped and attached to each other are deformed. The seismic strength and seismic performance can be drastically improved, the hanging position of the suspension bolt 3 can be suitably maintained over a long period of time, and the weight of the entire ceiling can be firmly supported to generate distortion, etc. Sealed and can be permanently retain good suspending lifting state.

  In addition, since the suspension bolt 3 is screwed to the suspension bolt screwing piece 231, its tip is brought into contact with the lower surface fixing piece 211. Therefore, the screwing operation causes a blur due to screwing tolerance. In addition, the suspension bolt 3 can be securely tightened and fixed in a suspended state, and the suspension bolt 3 itself does not have a fixing function as a component for fixing the suspension bolt fixing bracket 2 a to the C-shaped steel 11. Therefore, even when the entire ceiling including the ceiling base material is shaken due to an earthquake or the like, the tip of the C-shaped steel 11 is shaken in a different direction and the tip is separated from the lower surface fixing piece 211 or screwing blurring occurs. This prevents the suspension function of the suspension bolt 3 from being impaired, maintains the tightening and fixing state, and firmly supports the weight of the entire ceiling to improve the suspension function of suppressing shaking and distortion. In That.

  In addition, the suspension bolt fixing bracket 2b attached to the C-shaped steel 12 as the main building extends the lower surface fixing portion 21 toward the lower surface portion side of the C-shaped steel 12 by extending the lower side of the side surface fixing portion 22. The lower surface piece 214 is bent, the lower surface connection pieces 212 and 212 are bent upward on both sides of the lower surface piece 214, and the lower surface connection pieces 212 and 212 are fixed to the lower surface portion of the C-shaped steel 12 respectively. The lower surface fixing piece 211 is bent so as to be integrally formed with the side surface fixing portion 22 (side surface fixing piece 221), and the suspension bolt fixing portion 23 is connected to the suspension bolt screw piece 231 and the suspension bolt screw piece. The side surface connecting portions 232 and 232 which are bent on both sides of the 231 and are rotatably mounted on the lower surface connecting pieces 212 and 212 are formed in a concave shape, and the side surface fixing portion 22 (side surface fixing piece 221). Bottom fixing piece 11 in a state that was screw-fixed to the side surface portion and lower surface portion of the C-section steel 12, and is configured to be angular adjusted in vertical position by the weight of the hanging bolts Nishigohen 231 hanging bolt 3 screwed into.

  If comprised in this way, the hanger bolt fixing | fixed part 23 will superimpose the side surface connection piece 232,232 mutually on the lower surface connection piece 212,212 in which the lower surface fixing part 21 and the side surface fixing part 22 were integrally molded. Since it can be rotatably mounted by the connecting bolt 25 in the externally fitted state, the mounting rigidity strength is improved by the structure in which these are integrally fixed in the state where the screws are firmly fixed to the two surfaces of the C-shaped steel 12. Not only can it be lifted and attached, but if the front end side of the suspension bolt 3 is screwed into the nut portion 233, the suspension bolt 231 is inevitably perpendicular to the suspension bolt screwing piece 231, and the suspension bolt 3 is also perpendicular to its own weight. The suspension bolt fixing metal is attached to the C-shaped steel 12 that is adjusted in angle to the posture and the suspension bolt screwing pieces 231 are inevitably arranged in parallel toward the ceiling panel and are installed horizontally or inclined. 2b angle adjustment when mounting the can be easily performed, and can be suspended fixed while being held hanging bolt 3 vertically.

  Moreover, even if the suspension bolt fixing portion 23 is pivotally attached to the lower surface connection piece 212 at the center position, the side surface fixing between the side surface fixing piece 221 and the screw hole 213 is fixed. Since it can be placed close to the portion 22 (side surface fixing piece 221) side, and one end side protrudes outward from the side surface fixing portion 22, it can be pivotally attached by the connecting bolt 25. Due to the integrated structure that reliably receives the load applied to the suspension bolt fixing portion 23 by the lower surface fixing portion 21 and the side surface fixing portion 22 when subjected to vibration in the direction of twisting or tilting, for example, shaking of the entire ceiling base As a result, the vibration load is shared in a well-balanced manner even when the suspension bolt fixing portion 23 tilts and swings around the shaft attachment (connection bolt 25) portion. 211 Concentrated load is not applied to either one of the side surface fixing pieces 221, and not only the deformation is prevented, but also the vibration of the ceiling base is prevented from propagating to the C-shaped steel 12 and causing distortion. The seismic strength and seismic performance can be dramatically improved, and the hanging position of the suspension bolt 3 can be suitably maintained over a long period of time, supporting the weight of the entire ceiling and maintaining a good suspension state. Can be held in.

In addition, the suspension bolt fixing portion 23 is arranged so that its center position is close to the side surface fixing portion 22 (side surface fixing piece 221) side with respect to the lower surface fixing portion 21 (the lower surface connecting piece 212) , and one end side thereof is the side surface fixing portion. 22 (side fixing pieces 221) are arranged in a state of protruding outward, and the connecting bolts 25 are inserted between the side connecting pieces 232 and the lower connecting piece 212 so as to be tightened, and are axially attached. The suspension bolt 3 is configured such that its tip is brought into contact with the outer periphery of the connection bolt 25 in a state where the suspension bolt 3 is screwed to the suspension bolt screwing piece 231.
For this reason, even if the suspension bolt fixing portion 23 tilts and swings around the shaft attachment (connection bolt 25) portion, the vibration load is shared in a balanced manner, and either the lower surface fixing piece 211 or the side surface fixing piece 221 is shared. In addition to preventing concentrated deformation on the side, not only can deformation be prevented, but the suspension bolt 3 can be fixed in a suspended state by tightening it firmly in a state in which blurring due to screwing tolerance is restricted by the screwing operation of the suspension bolt 3. In addition, since the suspension bolt 3 itself does not have a fixing function as a component for fixing the suspension bolt fixing bracket 2b to the C-shaped steel 12, the entire ceiling including the ceiling base material is shaken by an earthquake or the like. In this case, it is possible to prevent the tip from being separated from the connecting bolt 25 or to cause screwing blur, and the original suspension function of the suspension bolt 3 is not impaired, and the tightening and fixing state is maintained. Is, it is possible to improve the suspended function to suppress the swaying strongly support the weight of the whole ceiling.

The side connecting piece 232 is formed in a trapezoidal shape so that the tip part facing the lower face fixing piece 211 does not come into contact with each other when the suspension bolt fixing part 23 is rotated and adjusted, and the side connecting piece 232 exceeds a predetermined inclination angle. Since the angle is regulated by coming into contact with the lower surface fixing piece 211, even if the entire ceiling base is subjected to tilting swaying in the width direction of the C-shaped steel 12, its amplitude can be suppressed, and due to the resonance action Amplification of shaking can be prevented.

DESCRIPTION OF SYMBOLS 1 Body ceiling part 11 C type steel for rafters 12 C type steel for main buildings 2a Hanging bolt fixing bracket 2b Hanging bolt fixing bracket 21 Lower surface fixing part 211 Lower surface fixing piece 212 Lower surface connection piece 213 Screw hole 214 Lower surface piece 215 Rising piece 216 Notch groove 22 Side fixing portion 221 Side fixing piece 222 Screw hole 23 Hanging bolt fixing portion 231 Hanging bolt screwing piece 232 Side connecting piece 233 Nut portion 24 Rivet 25 Connecting bolt 3 Hanging bolt 4 Field edge receiver 41 Field edge receiving hanger 5 Reinforcement base material 51 Steady rest bracket

Claims (6)

A suspension bolt fixing bracket for hanging and fixing a suspension bolt vertically on a C-shaped steel constituting the casing ceiling,
The suspension bolt fixing bracket includes a lower surface fixing portion that is faced to the lower surface portion of the C-type steel and screw-fixed, a side surface fixing portion that is faced to the side surface portion of the C-type steel and is screw-fixed, and the suspension bolt is screwed And a suspension bolt fixing portion to be
The suspension bolt fixing portion is pivotally attached to the bottom surface fixing portion so that the suspension bolt can be angle-adjusted and maintained vertically, and the C-type steel disposed horizontally or at a predetermined inclination angle. In a state where the two surfaces of the lower surface fixing portion and the side surface fixing portion are face-to-surface fixed, the screwing surface of the suspension bolt fixing portion is arranged in parallel toward the ceiling panel side so that the suspension bolt is suspended and held. Hanging bolt fixing bracket characterized by. In claim 1, to attach the suspension bolt fixing bracket to a C-shaped steel as a rafter,
The suspension bolt fixing portion extends from the lower side of the side surface fixing portion and is bent toward the lower surface portion side of the C-shaped steel, and a side connection that is pivotally attached to the lower surface fixing portion. And integrally molded with the side fixing part in a U-shape in side view,
The lower surface fixing portion is bent in a reverse L shape in side view by a lower surface fixing piece fixed to the lower surface portion of the C-shaped steel and a lower surface connection piece that pivotally mounts the side surface connection piece.
Suspension bolt fixing, wherein the side surface fixing portion is faced to a side surface portion of C-shaped steel, and the bottom surface fixing piece is screw-fixed by adjusting the angle from a state in which the bottom surface fixing piece is screw-fixed to the bottom surface portion of the C-shaped steel. Hardware.   3. The suspension bolt fixing bracket according to claim 2, wherein the suspension bolt is engaged with the suspension bolt screwing piece, and a tip of the suspension bolt is brought into contact with the lower surface fixing piece. In claim 1, to attach the suspension bolt fixing bracket to the C-shaped steel as a purlin,
The lower surface fixing portion includes a lower surface piece that extends from a lower side of the side surface fixing portion and is bent toward the lower surface portion side of the C-shaped steel, and a lower surface connection piece that is bent up at both sides of the lower surface piece. And a lower surface fixing piece bent to be fixed to the lower surface portion of the C-shaped steel on each of the lower surface connecting pieces, and integrally formed with the side surface fixing portion,
The suspension bolt fixing portion is formed in a concave shape by a suspension bolt screwing piece and a side connection piece that is bent on both sides of the suspension bolt screwing piece and rotatably attached to the respective lower face connection pieces. As well as
In the state where the side surface fixing portion and the lower surface fixing piece are screw-fixed to the side surface portion and the lower surface portion of the C-shaped steel, the angle is adjusted to a vertical posture by the weight of the suspension bolt screwed to the suspension bolt screwing piece; Hanging bolt fixing bracket. According to claim 4, wherein the hanger bolt fixing part, the lower surface connecting piece of the lower surface fixing unit, the center position in proximity flanked fixing pieces side of the side fixing portions, from the side fixing piece one end in a state in which also protrude outward, while the shaft wearing connecting bolts brought fastening operably inserted between each of the side connecting piece and the lower surface connecting piece, the hanger rod, the hanger rod Nishigohen A suspension bolt fixing bracket, wherein the tip of the suspension bolt is brought into contact with the connecting bolt in a state of being screwed onto the suspension bolt.   In any one of claims 4 and 5, the side surface connecting piece is cut and formed in a trapezoidal shape so that the tip portion facing the lower surface fixing piece does not come into contact with each other when the suspension bolt fixing portion is rotationally adjusted. The suspension bolt fixing bracket is characterized in that the angle is regulated by contacting the lower surface fixing piece when a predetermined inclination angle is exceeded.