JP2014163055A - Brace metal fitting, ceiling structure and construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brace metal fitting, a ceiling structure constituted by using the same and a construction method thereof, capable of adjusting an installation angle of a reinforcement brace, and capable of also firmly maintaining the connection between the reinforcement brace and a suspension bolt, even when an earthquake occurs repetitively, without impairing an advantage on work such as the work for installing the upper end side of the reinforcement brace in an upper part of the suspension bolt, is executed from the lower side by gripping the lower end side of the reinforcement brace.SOLUTION: The brace metal fitting 1 is provided for fixing the reinforcement brace 3 to the upper part of the suspension bolt 2, and comprises a fixing member 21 fixed to the suspension bolt 2 by using a screw, an installation bolt member 21 for fixing one end to the reinforcement brace 3 and a connection member 14 rockably connected to the fixing member 12 via a rotary shaft and threadedly inserting a bolt part 22a formed on the other end side of the installation bolt member 21.

Description

  The present invention relates to a brace fitting for attaching a reinforcing brace for suppressing shaking of a ceiling in the event of an earthquake, a ceiling structure configured using the brace fitting, and a construction method thereof.

  2. Description of the Related Art Conventionally, there is a ceiling structure in which a ceiling frame is suspended from a suspension bolt that is suspended from a ceiling frame, and a ceiling plate is held on the ceiling frame. In such a ceiling structure, the seismic strength is improved by attaching a reinforcing brace.

  Conventionally, the upper end side of the reinforcing brace is locked to the upper part of the suspension bolt, and the lower end side is fixed to the lower part of another adjacent suspension bolt or the ceiling frame. Brace fittings are used to lock the reinforcing brace to the suspension bolt, and brace fittings of various shapes have been developed.

  For example, in Patent Document 1, locking portions that can be locked to the suspension bolts are provided at three positions between the upper and lower portions of the board into which the mounting bolts provided at the tips of the reinforcing braces are screwed. A brace fitting including a locking piece is disclosed.

  The brace bracket is used to attach the reinforcing brace to the suspension bolt. With the mounting bolt screwed into the board of the brace bracket, the respective locking portions of the brace bracket are locked to the suspension bolt. This is done by rotating the reinforcing brace. By rotating the reinforcing brace, the tip of the mounting bolt comes into contact with the suspension bolt, and the reinforcement brace is attached to the suspension bolt via the brace fitting.

  According to this brace fitting, the upper and lower portions, the three locking portions between them, and the tip of the mounting bolt are locked to the suspension bolt, so that the four-point support can be reliably locked. In addition, at least one of the upper and lower locking portions, the locking portion between them, and the tip of the mounting bolt are locked to the suspension bolt, thereby securing the three-point support while reinforcing the brace. It is possible to adjust the mounting angle.

  A configuration capable of adjusting the mounting angle of the reinforcing brace is necessary for reliably suppressing the shaking of the ceiling by the reinforcing brace. The mounting angle of the reinforcing brace with respect to the ceiling frame should be in accordance with the conditions such as the length between the ceiling frame and the ceiling frame (ceiling pocket dimension) and the mutual spacing of the suspension bolts, thereby effecting the shaking of the ceiling Can be suppressed.

  For example, Patent Document 2 discloses that a mounting angle of a reinforcing brace is adjustable, a hook member that is hooked so as to hold a suspension bolt, a wing plate bolt that is fixed to the reinforcing brace, and a wing plate bolt. There is disclosed a brace fitting including a connecting member into which a bolt portion formed on the other end side is screwed, and the hook member and the connecting member are slidably connected via a connecting pin.

  The same applies to the brace fitting. The hook member of the brace fitting is engaged with the suspension bolt in a state where the bolt portion of the battledore bolt is screwed into the connecting member of the brace fitting, and the reinforcing brace is rotated in this state. By rotating the reinforcing brace, the tip of the bolt part of the battledore bolt comes into contact with the hanging bolt, and the reinforcing brace is attached to the hanging bolt via the brace fitting.

JP 2009-35960 A (published February 19, 2009) Registered Utility Model No. 315964 (Registered on May 12, 2010)

  By the way, in the brace metal fittings of the prior art as described above, the brace metal fittings are not fixed to the suspension bolts but are locked (latched) to the suspension bolts. This is because the work of attaching the upper end side of the reinforcing brace to the upper portion of the suspension bolt is performed from below by grasping the lower end side of the reinforcing brace. By adopting such an attachment method, the operator does not have to climb to a position where the hand can reach the upper part of the suspension bolt, and workability is improved. Moreover, as a matter of fact, at the stage of attaching the reinforcing brace, many pipes are already arranged between the ceiling frame and the ceiling frame, and it is difficult for the operator to reach a position where the hand can reach the upper part of the suspension bolt. But there is.

  However, in the configuration in which the brace bracket is locked (latched) to the suspension bolt, when the earthquake repeatedly occurs, a gap is formed between the mounting bolt or the battledore bolt and the suspension bolt, and the brace bracket and the suspension bolt are formed. It has been found that there is a problem that the reinforcement brace falls due to release of the lock.

  The present invention solves the above-mentioned problems, and an object of the present invention is to adjust the attachment angle of the reinforcement brace and to attach the upper end side of the reinforcement brace to the upper part of the suspension bolt. Use this brace fitting and brace fitting that can maintain the connection between the reinforcement brace and the suspension bolt firmly even in the event of repeated earthquakes, without compromising the work advantage of being able to grip the lower end and do it from below It is in proposing the ceiling structure comprised as mentioned above and its construction method.

  In order to solve the above-described problems, the brace fitting of the present invention suspends a reinforcing brace that connects and reinforces a suspension bolt suspended from a ceiling casing and a ceiling frame suspended from the suspension bolt. A brace fitting for fixing to the upper part of the bolt, a fixing member fixed to the suspension bolt using a screw, a mounting bolt member having one end fixed to the reinforcing brace, and a rotating shaft to the fixing member And a connecting member into which a bolt portion formed on the other end side of the mounting bolt member is screwed.

  According to the said structure, the fixing member which connects the connection member by which the bolt part formed in the other end side of the attachment bolt member is screwed together is fixed to the suspension bolt using the screw. Therefore, even when earthquakes occur repeatedly, the connection between the reinforcing brace and the suspension bolt can be firmly maintained. Thereby, the bracing brace fixed by the brace metal fitting of the present invention can withstand the pulling force and the pushing-up force acting by the force applied to the ceiling without falling off from the suspension bolt even if the earthquake repeatedly occurs, It can keep earthquake resistance for a long time.

  Further, since the connecting member is swingable, the attachment angle of the reinforcing brace can be adjusted. Furthermore, the upper end side of the reinforcing brace is suspended by gripping the lower end side of the reinforcing brace with the mounting bolt member fixed to the upper end side and screwing the bolt portion of the mounting bolt member into the connecting member of the brace bracket from the lower side. Since it can attach to a volt | bolt, it is not necessary for an operator to climb to the position which can reach the upper part of a suspension bolt, and workability | operativity can be maintained.

  In the brace fitting of the present invention, the fixing member is a high nut having a vertical screw hole into which the suspension bolt is screwed, and a pair of shaft bolts forming the rotation shaft on both parallel side surfaces of the high nut. A horizontal screw hole is formed, the connecting member is a member having a U-shaped cross section, and an insertion hole through which the shaft bolt is inserted is formed in a pair of opposing portions, In a state where the fixing member is sandwiched between the facing members, the shaft bolt is screwed into a lateral screw hole provided in the fixing member through an insertion hole provided in the connecting member. The fixing member and the connecting member may be swingably connected.

  According to the above configuration, since the structure for holding the connecting member in a swingable manner and the member for fixing the brace fitting to the suspension bolt can be made common, the number of parts and the number of work steps can be reduced.

  In the brace fitting of the present invention, the fixing member further includes a pair of engagement pieces formed by bending a flange portion of a hat-shaped metal plate and having a substantially U-shaped longitudinal section. The engaging pieces are engaged with each other by securing a space on the inner side and overlapping the bent hook parts, and the bent hook parts have screw holes into which the suspension bolts are screwed. The connecting member is rocked on a pair of opposed support portions corresponding to the head of the hat-shaped metal plate that is formed and bent and protrudes in a direction perpendicular to the axial direction of the suspension bolt from the flange portion. An insertion hole through which a shaft bolt serving as a rotating shaft for movably coupling is inserted is provided, and the coupling member is a high nut having a vertical screw hole into which the bolt portion of the mounting bolt member is screwed. The rotation axis is formed on both parallel side surfaces of the high nut. An insertion hole into which the bolt is inserted is formed, and the shaft bolt is provided in each of the opposing support portion and the connecting member in a state where the connecting member is sandwiched between a pair of opposing support portions of the fixing member. The fixing member and the connecting member can be swingably connected by being fastened through the insertion hole.

  The brace fitting according to the present invention further includes a mounting bolt having the bolt portion formed at a tip portion and a reinforcing plate having an L-shaped cross section attached to a shaft portion of the mounting bolt. In the state where the bolt portion of the mounting bolt member with the reinforcing brace fixed thereto is screwed into the connecting member, the upper end side of the reinforcing brace is fixed to the suspension bolt using the brace fitting. The front end portion of the plate may be in contact with the connecting member.

  According to the said structure, the proof stress with respect to the force which pushes up a reinforcement brace especially among the pulling force and pushing-up force which act on a reinforcement brace can be strengthened.

  In order to solve the above problems, the ceiling structure of the present invention includes a suspension bolt suspended from a ceiling casing, a reinforcing brace having an upper end attached to the suspension bolt using the brace fitting of the present invention, and the suspension A ceiling frame suspended from a bolt and disposed at a predetermined interval from the ceiling casing is provided.

  According to the above configuration, the reinforcement brace can be attached without the operator climbing to a position where the hand can reach the upper part of the suspension bolt, and a ceiling structure having sufficient proof strength can be provided even when earthquakes occur repeatedly.

  In order to solve the above-described problem, the ceiling structure construction method of the present invention includes a first step of suspending a suspension bolt from a ceiling casing, and a second step of suspending a ceiling frame using the suspended suspension bolt. A method for constructing a ceiling structure, comprising: a step and a third step of attaching a reinforcing brace between the suspension bolt and the ceiling frame using the brace fitting according to claim 1, wherein In the third step, the lower end side of the reinforcing brace having the mounting bolt member fixed to the upper end side is gripped in the third step. And screwing the bolt portion of the mounting bolt member into the connecting member of the brace fitting from below, and attaching the upper end side of the reinforcing brace to the suspension bolt using the brace fitting. It is characterized in that.

  According to the above method, it is possible to attach a reinforcing brace without climbing to a position where the operator can reach the upper part of the suspension bolt, and it is easy to create a ceiling structure with sufficient proof strength even in the event of repeated earthquakes. Can be constructed.

  As a result, the mounting angle of the reinforcing brace can be adjusted, and the operation of attaching the upper end side of the reinforcing brace to the upper part of the suspension bolt can be performed from the lower side by grasping the lower end side of the reinforcing brace. The effect is that it is possible to provide a brace fitting that can firmly maintain the connection between the reinforcing brace and the suspension bolt, and a ceiling structure that is constructed using this brace fitting and its construction method, even if earthquakes occur repeatedly without damage. Play.

It is a figure which shows the ceiling structure comprised using the brace metal fitting concerning embodiment of this invention. It is a disassembled perspective view which shows the detail of the said brace metal fitting. It is a perspective view which shows the state which fixed the upper end part of the reinforcement brace to the suspension bolt using the said brace metal fittings. It is sectional drawing which shows the example of fixation with the attachment bolt and reinforcement brace of the said brace metal fitting. It is process drawing which shows the construction method of the said ceiling structure comprised using the said brace metal fittings. It is a perspective view which shows the suspending bolt before suspending to a ceiling housing | casing to which the said brace metal fitting was attached. It is a disassembled perspective view which shows the detail of the brace metal fitting which concerns on the other form of implementation of this invention. It is a perspective view which shows the state which fixed the upper end side of the reinforcement brace to the suspension bolt using the said brace metal fitting concerning the other form of implementation.

[Embodiment 1]
Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a view showing a ceiling structure configured using the brace fitting according to the present embodiment, wherein (a) is a front view of the ceiling structure, and (b) is a reinforcing brace using the brace fitting. It is an enlarged view which shows the detail of the part which attached to the suspension bolt.

  As shown in FIG. 1 (a), the ceiling structure A includes a plurality of suspension bolts 2 suspended from a ceiling housing 10 at a predetermined interval, and a brace fitting 1 according to the present embodiment. The upper end side of the reinforcing brace 3 is attached to the suspension bolt 2 and the ceiling frame 4 is arranged with a predetermined distance (ceiling pocket dimension) from the ceiling casing 10 via the suspension bolt 2. Yes.

  A suspension member 5 for suspending the ceiling frame 4 is attached to the tip of the suspension bolt 2, and the outer peripheral surface is threaded as shown in FIG. . The bolt diameter of the suspension bolt 2 is not limited, and may be set as appropriate according to the arrangement pitch of the suspension bolt 2, the overall weight of the ceiling casing 10, and the like.

  The reinforcing brace 3 suppresses shaking of the ceiling when an earthquake occurs. As shown in FIG. 1A, the reinforcing brace 3 is basically a V-shaped arrangement in which two reinforcing braces 3 are arranged in a V shape on the three suspension bolts 2 arranged. In the V-shaped arrangement, there is a suspension bolt in the center of the two reinforcing braces 3 arranged in the V shape.

  When arranged in this manner, for example, the leftward force indicated by the arrow 60 applied to the ceiling frame 4 acts as a pulling force indicated by the arrow 60a on the right reinforcing brace 3, and the left reinforcing brace. 3 acts as a push-up force indicated by an arrow 60b. Conversely, the rightward force indicated by the arrow 61 applied to the ceiling frame 4 acts as a pulling force indicated by the arrow 61a on the left reinforcing brace 3 and is pushed up by the right reinforcing brace 3 indicated by the arrow 61b. Acts as a force. Thus, both the pulling and pushing forces act on the reinforcing brace 3.

  An attachment bolt member 21 is attached to the upper end side of the reinforcement brace 3, and the attachment bolt member 21 is screwed into the connecting member 14 of the brace fitting 1 attached to the upper part of the suspension bolt 2 to reinforce. The upper end side of the brace 3 is attached to the suspension bolt 2. The lower end side of the reinforcing brace 3 is fixed to the ceiling frame 4.

  The angle θ (mounting angle) formed by the reinforcing brace 3 and the extending direction (horizontal plane) of the ceiling frame 4 is described later with respect to the fixing member 12 in which the connecting member 14 of the brace fitting 1 is fixed to the suspension bolt 2. By being provided so as to be swingable, it can be arbitrarily adjusted. In order to reliably suppress the shaking, it is suitable that the attachment angle θ of the reinforcing brace 3 is between 30 ° and 60 °. The length of the reinforcing brace 3 is determined in consideration of conditions such as a ceiling pocket size and an arrangement pitch of the suspension bolts 2.

  FIG. 2 is an exploded perspective view showing details of the brace fitting, and FIG. 3 is a perspective view showing a state in which the upper end side of the reinforcing brace is fixed to a suspension bolt using the brace fitting. As shown in FIG. 2, the brace fitting 1 includes a fixing member 12, a connecting member 14, and a mounting bolt member 21.

  The fixing member 12 is a member for screw-fixing the brace fitting 1 to the suspension bolt 2, and here, it is a hexagonal high nut having a vertical screw hole 12a into which the suspension bolt 2 is screwed. Lateral screw holes 12c and 12c into which shaft bolts 13 and 13 for swingably attaching the connecting member 14 are screwed are formed on the side surfaces 12b and 12b facing the vertical screw hole 12a in the fixing member 12. Yes. The horizontal screw holes 12c and 12c reach the vertical screw hole 12a and communicate with the vertical screw hole 12a, and the end portions of the shaft bolts 13 and 13 screwed into the horizontal screw holes 12c and 12c are connected to the suspension bolt 2 It comes to contact with.

  By adjusting the tightening degree of the shaft bolts 13, the brace fitting 1 can be made rotatable or non-rotatable with respect to the circumferential direction of the suspension bolt 2. That is, by tightening the shaft bolts 13 and 13 until they abut against the suspension bolt 2, the rotation of the fixing member 12 in the circumferential direction of the suspension bolt 2 is prevented, and the brace fitting 1 is not in the circumferential direction of the suspension bolt 2. It becomes rotation. On the other hand, by tightening the shaft bolts 13 and 13 so as not to contact the suspension bolt 2, the fixing member 12 maintains a state in which it can rotate in the circumferential direction of the suspension bolt 2. It becomes possible to rotate in the circumferential direction.

  The connecting member 14 connects the fixing member 12 and the reinforcing brace 3 so as to be swingable along the axial direction of the suspension bolt 2. Here, the connecting member 14 is a member having a substantially U-shaped cross section. Insertion holes 14b and 14b of shaft bolts 13 and 13 are formed in a pair of left and right facing portions 14a and 14a sandwiching a U-shaped inner groove in the connecting member 14. The distance between the opposing portions 14 a and 14 a in which the insertion holes 14 b and 14 b are formed is formed to have a dimension that substantially matches the outer diameter of the fixing member 12.

  As shown in FIG. 3, the fixing member 12 in a state where the suspension bolt 2 is screwed into the vertical screw hole 12 a is sandwiched between the opposing portions 14 a and 14 a of the connecting member 14, and in this state, it becomes a rotating shaft. The shaft bolts 13, 13 pass through the insertion holes 14 b, 14 b (see FIG. 2) of the connecting member 14 and are screwed into the horizontal screw holes 12 c, 12 c (see FIG. 2) of the fixing member 12. 12 and the connecting member 14 are swingably connected along the axial direction of the suspension bolt 2.

  The distal end portions of both facing portions 14a, 14a in the connecting member 14 are processed into an arc shape centering on the insertion holes 14b, 14b, and the diameter of the arc has a size equivalent to the height of the fixing member 12. ing. Accordingly, the upper end of the connecting member 14 does not come to a position higher than the upper end of the fixing member 12 as the connecting member 14 swings (rotates). Even if the fixing member 12 approaches the ceiling housing 10. The rotation of the connecting member 14 is not prevented by the contact between the connecting member 14 and the ceiling casing 10.

  Further, a screw hole 14d into which the bolt portion 22a of the mounting bolt member 21 is screwed is formed in the side surface portion 14c orthogonal to the both facing portions 14a, 14a in the connecting member 14. Both opposing portions 14a, 14a are bent so as to expand toward the side surface portion 14c, and the dimension in the direction in which the opposing portions 14a, 14a face each other in the vicinity of the side surface portion 14c is larger than the outer diameter of the fixing member 12. It has become. By increasing the dimension in the direction in which the opposing portions 14a, 14a face each other in the vicinity of the side surface portion 14c, the force that the reinforcing brace 3 pushes up the connecting member 14 via the mounting bolt member 21 (the arrow 60b in FIG. 61b)).

  As shown in FIG. 2, the mounting bolt member 21 excludes the mounting bolt 22 in which the bolt portion 22a is formed by threading the outer peripheral surface of the tip portion, and the bolt portion 22a of the mounting bolt 22. And a reinforcing plate 23 attached to the shaft portion. The reinforcing plate 23 is made of an angle steel steel plate having an L-shaped cross section, and is welded to the mounting bolt 22 in a state where the shaft portion of the mounting bolt 22 is aligned with the corner portion inside the L-shape. The upper end side of the reinforcing brace 3 is fixed to the reinforcing plate 23 using a plurality of screws 18. Therefore, the reinforcing plate 23 is formed with screw holes 23a for screwing screws 18 respectively.

  As shown in FIG. 3, the bolt portion 22 a of the mounting bolt member 21 attached to the upper end side of the reinforcing brace 3 is screwed into the screw hole 14 d of the connecting member 14 in the brace fitting 1, so that the upper end side of the reinforcing brace 3 is Is attached to the suspension bolt 2 using the brace fitting 1, the tip of the reinforcing plate 23 of the mounting bolt member 21 is in contact with the side surface portion 14 c of the connecting member 14. Thereby, the reinforcement | strengthening with respect to the force (refer arrow 60b, 61b of (a) of FIG. 1) which the reinforcement brace 3 pushes up the connection member 14 via the attachment bolt member 21 is aimed at.

  The configuration in which the front end portion of the reinforcing plate 23 abuts against the side surface portion 14c of the connecting member 14 is such that the brace bracket 1 is fixed to the suspension bolt 2 in advance and the bolt portion 22a at the front end portion of the mounting bolt 22 is applied to the suspension bolt 2. This is a configuration that is possible only when it is no longer necessary to make contact. In the configuration in which the conventional brace bracket is locked to the suspension bolt, the reinforcement brace is attached to the suspension bolt by bringing the tip of the mounting bolt into contact with the suspension bolt, so the distance between the reinforcement plate and the brace bracket varies. A configuration in which such a reinforcing plate 23 is abutted against the connecting member 14 cannot be employed.

  FIG. 4 shows an example of fixing the mounting bolt member of the brace bracket and the reinforcing brace. In the example shown in FIG. 4A, the groove-shaped steel-like reinforcing brace 3A is attached with screws 18 in a state in which the corners are aligned so as to enclose the L-shaped reinforcing plate 23 inside the groove. Yes. Further, in the example of FIG. 4B, the lip groove-shaped steel (C-shaped steel) -like reinforcing brace 3B is reinforced with the bottom surface and one surface of the L-shaped reinforcing plate 23 attached to each other. The brace 3 is attached with screws 18 from the inside of the U-shape. In the example shown in FIG. 4C, the reinforcing brace 3C having a cross-sectional saddle shape is attached with screws 18 in a state where corners are aligned so as to include a reinforcing plate 23 having an L-shaped cross section inside the saddle. .

  In the above configuration, as shown in FIG. 1A, in order to attach the reinforcing brace 3 to the suspension bolt 2, the upper end side of the reinforcement brace 3 is fixed to the suspension bolt 2 using the brace fitting 1. The lower end side of the reinforcing brace 3 is fixed to the ceiling frame 4 with screws or the like.

  Next, a construction method of the ceiling structure A configured using the brace fitting 1 will be described. FIG. 5 is a process diagram showing a construction procedure of the ceiling structure A. First, the brace fitting 1 with the mounting bolt member 21 removed is attached to the top of the suspension bolt 2 (P1). Specifically, the suspension bolt 2 is screwed into the vertical screw hole 12 a in the fixing member 12 of the brace fitting 1. At this time, the brace fitting 1 is attached so that the attachment position of the brace bracket 1 is lower than the portion of the suspension bolt 2 attached to the ceiling casing 10.

  Next, the suspension bolt 2 is suspended from the ceiling housing 10 (P2). Here, in a later step, as shown in FIG. 6, the suspension bolt 2 with the brace fitting 1 attached is suspended at a position where the reinforcement brace 3 needs to be attached. A normal suspension bolt 2 to which the brace fitting 1 is not attached is suspended at a position where the reinforcement brace 3 does not need to be attached.

  As described above, the brace fitting 1 can be rotatable or non-rotatable with respect to the circumferential direction of the suspension bolt 2 by adjusting the tightening degree of the shaft bolts 13 and 13. Therefore, when it is desired to make the brace bracket 1 non-rotatable with respect to the circumferential direction of the suspension bolt 2, the reinforcing brace 3 is mounted in the state where the suspension bolt 2 is suspended from the ceiling casing 10 in the process of suspending the suspension bolt 2. The shaft bolts 13 and 13 may be tightened again by adjusting the direction of the connecting member 14 in the desired direction to be attached (adjusting the angle in the circumferential direction). Alternatively, the shaft bolts 13 and 13 are tightened in advance so that the suspension bolt 2 cannot be rotated with respect to the circumferential direction, and when the suspension bolt 2 is attached to the ceiling housing 10, the suspension bolt 2 is rotated so that the direction of the connecting member 14 May be adjusted. After the suspension bolt 2 is installed on the ceiling casing 10, various pipes such as ducts are arranged below the ceiling casing 10.

  Next, the ceiling frame 4 is suspended using the suspension bolt 2 suspended from the ceiling housing 10 (P3). When the ceiling frame 4 is provided, the upper end side of the reinforcing brace 3 is attached to the suspension bolt 2. Specifically, the lower end side of the reinforcing brace 3 is gripped, and the bolt portion 22a of the mounting bolt member 21 fixed to the upper end side from the lower side is connected to the brace fitting 1 attached to the upper portion of the suspension bolt 2. Screw into the screw hole 14d of the member 14. Then, the reinforcing brace 3 is rotated until the reinforcing plate 23 of the mounting bolt member 21 hits the side surface portion 14c of the connecting member 14, and the upper end side of the reinforcing brace 3 is attached to the suspension bolt 2 (P4).

  At this time, since the connecting member 14 is attached to the fixing member 12 so as to be swingable in the vertical direction, the attachment angle of the reinforcing brace 3 can be adjusted, and the connecting member 14 can be attached at a position where the vibration can be most suppressed. Further, if the brace fitting 1 is configured to be rotatable with respect to the circumferential direction of the suspension bolt 2, in the step of hanging the suspension bolt 2, the direction of the connecting member 14 in the brace fitting 1 may not be adjusted. In the step of attaching the reinforcement brace 3, the reinforcement brace 3 can be attached in a desired direction. Subsequently, the lower end side of the reinforcing brace 3 is attached to the suspension bolt 2 attached to the ceiling frame 4 (P5).

  Thus, by using the brace fitting 1, the attachment angle of the reinforcement brace can be adjusted, and the operation of attaching the upper end side of the reinforcement brace to the upper part of the suspension bolt is held downward by grasping the lower end side of the reinforcement brace. Even when earthquakes occur repeatedly, the connection between the reinforcing brace and the suspension bolt can be firmly maintained without impairing the operational advantage of being able to be performed from the side. The reinforcing brace fixed by the brace bracket of the present invention can withstand the pulling force and the pushing-up force acting on the ceiling without dropping off from the suspension bolt, even if earthquakes repeatedly occur. Can maintain earthquake resistance.

[Embodiment 2]
Another embodiment of the present invention will be described. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals and explanation thereof is omitted.

  FIG. 7 is an exploded perspective view showing details of the brace fitting according to the present embodiment, and FIG. 8 is a perspective view showing a state in which the upper end side of the reinforcing brace is fixed to a suspension bolt using the brace fitting. is there. As shown in FIG. 7, the brace fitting 100 according to the present embodiment includes a fixing member 30, a connecting member 34, and a mounting bolt member 21.

  The fixing member 30 is a member that fixes the brace fitting 100 to the suspension bolt 2, and here includes a pair of engaging pieces 31 and 32 having a substantially U-shaped longitudinal section. The pair of engagement pieces 31 and 32 are formed by bending a flange portion of a hat-shaped (convex shape) metal plate. The engaging piece 31 and the engaging piece 32 are bent at their flanges so as to face each other, and the engaging piece 31 is formed with an upper locking portion 31a and a lower locking portion 31b. An upper locking portion 32a and a lower locking portion 32b are formed in the upper portion. For example, the engagement piece 31 and the engagement piece 32 are hung inward by superimposing the upper engagement portion 32a on the upper engagement portion 31a and the lower engagement portion 32b on the lower engagement portion 31b. The space through which the bolt 2 is passed is held and engaged.

  Screw holes 31c and 31c into which the suspension bolt 2 is screwed are formed in the upper locking portion 31a and the lower locking portion 31a of the engagement piece 31. Similarly, screw holes 32c and 32c into which the suspension bolt 2 is screwed are formed in the upper locking portion 32a and the lower locking portion 32a of the engagement piece 32. When the suspension bolt 2 is screwed from below the fixing member 30, a screw hole 31c formed in the lower locking portion 31b, a screw hole 32c formed in the lower locking portion 32b, and an upper locking portion 31a are formed. The screw holes 31c and the screw holes 32c formed in the upper locking portion 32a are sequentially passed.

  On the other hand, a portion between the upper locking portion 31a and the lower locking portion 31b in the engagement piece 31 and a portion between the upper locking portion 32a and the lower locking portion 32b in the engagement piece 32 are respectively engaged. A pair of opposing portions 31d and 32d are arranged to face each other with a space in a state where the combined piece 31 and the engaging piece 32 are engaged. The portions corresponding to the heads of the hat-shaped metal plates in the opposing portions 31d and 32d protrude to the side to which the connecting member 34 is connected than the upper locking portions 31a and 32a and the lower locking portions 31b and 32b. The protruding portion functions as an opposing support portion that supports the connecting member 34 so as to be swingable in the axial direction of the suspension bolt 2.

  Insertion holes 31e and 32e of the shaft bolt 35 are formed in the projecting opposing support portions of the opposing portions 31d and 32d, and the distance between the opposing portions 31d and 32d substantially matches the outer diameter of the connecting member 34. Dimension is formed. Moreover, the said opposing support part in both the opposing parts 31d and 32d is processed into the circular arc shape centering on the insertion holes 31e and 32e.

  The connecting member 34 connects the fixing member 30 and the reinforcing brace 3 so as to be swingable along the axial direction of the suspension bolt 2. Here, the bolt portion 22 a at the tip of the mounting bolt member 21 is screwed. It consists of a hexagonal high nut having a vertical screw hole 34a to be inserted.

  Insertion holes 34c and 34c through which shaft bolts 35 for swingably attaching the connection member 34 to the fixing member 30 are inserted in the side surfaces 34b and 34b facing the vertical screw hole 34a in the connection member 34. Is formed. The insertion holes 34c and 34c reach the vertical screw hole 34a and communicate with the vertical screw hole 34a. The shaft bolt 35 inserted from the engagement piece 31 side of the fixing member 30 through the insertion hole 31e formed in the facing portion 31d is inserted into the insertion holes 34c and 34c of the connecting member 34 and the facing portion 32d of the fixing member 30. It passes through the formed insertion hole 32e in order and is fixed by the nut 46.

  In this case, the shaft bolt 35 crosses the longitudinal screw hole 34a in the connecting member 34 in the middle. Therefore, the insertion holes 34c and 34c are provided at positions deeper than the central portion in the height direction of the high nut so that the bolt portion 22a of the mounting bolt member 21 is sufficiently screwed into the vertical screw hole 34a.

  Furthermore, protrusions 31f and 32f for preventing the connecting member 34 from rotating unnecessarily are formed on the inner surfaces of the facing portions 31d and 32d.

  In such a brace fitting 100, the construction procedure is the same as that of the brace fitting 1 of the first embodiment, and thus the description thereof is omitted. The adjustment of the circumferential direction of the brace fitting 100 is performed by rotating the suspension bolt 2 when attaching the suspension bolt 2 with the brace fitting 100 attached to the ceiling housing 10 except for the attachment bolt member 21. Just do it.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for buildings and can be used for providing buildings with excellent earthquake resistance.

DESCRIPTION OF SYMBOLS 1 Brace metal fitting 2 Suspension bolt 3 Reinforcement brace 4 Ceiling frame 10 Ceiling frame 12 Fixing member 12a Vertical screw hole 12b, 12b Side surface 12c, 12c Horizontal screw hole 13 Axle bolt 14 Connecting member 14a Opposing part 14b Insertion hole 14c Side surface part 14d Screw hole 18 Screw 21 Mounting bolt member 22 Mounting bolt 22a Bolt portion 23 Reinforcement plate 23a Screw hole 30 Fixing member 31, 32 Engagement piece 34 Connection member A Ceiling structure

Claims (6)

A brace fitting for fixing a reinforcing brace that connects and reinforces between a suspension bolt suspended from a ceiling casing and a ceiling frame suspended from the suspension bolt to the upper portion of the suspension bolt,
A fixing member fixed to the suspension bolt using a screw;
A mounting bolt member having one end fixed to the reinforcing brace;
A brace fitting comprising: a connecting member that is swingably connected to the fixing member via a rotating shaft and into which a bolt portion formed on the other end side of the mounting bolt member is screwed. The fixing member is a high nut having a vertical screw hole into which the suspension bolt is screwed, and a horizontal screw hole into which a pair of shaft bolts forming the rotating shaft is screwed is formed on both parallel side surfaces of the high nut. Has been
The connecting member is a member having a U-shaped cross section, and an insertion hole through which the shaft bolt is inserted is formed in a pair of opposed portions.
The shaft bolt is screwed into a lateral screw hole provided in the fixing member through an insertion hole provided in the connecting member in a state where the connecting member is sandwiched by the facing portion. The brace bracket according to claim 1, wherein the fixing member and the connecting member are swingably connected. The fixing member is composed of a pair of engaging pieces formed by bending a flange portion of a hat-shaped metal plate and having a substantially U-shaped longitudinal section, and the pair of engaging pieces has a space inside. The bent hook parts are engaged with each other by overlapping the bent hook parts, and screw holes into which the suspension bolts are screwed are formed in the bent hook parts. Rotating shaft for oscillatingly connecting the connecting member to a pair of opposing support portions corresponding to the head of the hat-shaped metal plate that protrudes in a direction perpendicular to the axial direction of the suspension bolt from the portion There is an insertion hole through which the shaft bolt is inserted,
The connecting member is a high nut having a vertical screw hole into which the bolt portion of the mounting bolt member is screwed, and an insertion hole through which a shaft bolt constituting the rotating shaft is inserted into both side surfaces parallel to the high nut. Is formed,
The shaft bolt is fastened through the insertion holes provided in the opposing support part and the connecting member, respectively, with the connecting member sandwiched between a pair of opposing support parts in the fixing member, The brace bracket according to claim 1, wherein the fixing member and the connecting member are swingably connected.   The mounting bolt member includes a mounting bolt in which the bolt portion is formed at a tip portion, and an L-shaped reinforcing plate attached to a shaft portion of the mounting bolt, and the reinforcing brace is fixed to one end. In the state where the bolt portion of the mounting bolt member is screwed into the connecting member and the upper end side of the reinforcing brace is fixed to the suspension bolt using the brace fitting, the tip end portion of the reinforcing plate is connected to the connecting member. The brace metal fitting according to any one of claims 1 to 3, wherein the brace metal fitting is in contact. Suspension bolts suspended from the ceiling frame,
Reinforcement brace where the upper end side is attached to the suspension bolt using the brace fitting according to any one of claims 1 to 4,
A ceiling structure comprising a ceiling frame suspended from the suspension bolt and disposed at a predetermined interval from the ceiling casing. A first step of suspending a hanging bolt from the ceiling frame;
A second step of suspending the ceiling frame using the suspended bolts;
A method for constructing a ceiling structure having a third step of attaching a reinforcing brace using the brace fitting according to claim 1, 2 or 3, between the suspension bolt and the ceiling frame,
In the first step, the method includes a step of hanging a suspension bolt to which the brace bracket except for the attachment bolt member is attached,
In the third step, the lower end side of the reinforcing brace having the mounting bolt member fixed to the upper end side is gripped, and the bolt portion of the mounting bolt member is screwed into the connecting member in the brace fitting from below, A method for constructing a ceiling structure, comprising a step of attaching an upper end side of a reinforcing brace to the suspension bolt using the brace fitting.

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