JP4464996B2 - Brace bracket and ceiling structure - Google Patents

Description

  The present invention relates to a brace fitting for attaching a reinforcing brace in a ceiling structure and a ceiling structure configured using the brace fitting.

  Conventionally, as a ceiling structure, there is one in which a ceiling plate is held by a lattice-like ceiling frame via suspension bolts suspended on a ceiling frame (a floor slab of an upper floor). In such a ceiling structure, the seismic strength is improved by reinforcing braces.

  In the conventional ceiling structure, the reinforcing brace is locked to the upper part of the suspension bolt on the upper side and fixed to the lower part of the other suspension bolt or the ceiling frame on the lower side.

  The reinforcement brace is locked to the suspension bolt through the brace fitting so that the reinforcement brace is attached at a predetermined angle.

  Conventionally, various shapes of brace metal fittings used for locking a reinforcing brace to a suspension bolt have been developed. For example, in Patent Document 1, as shown in FIG. 6, a nut portion 110 into which a brace bolt portion 103 is screwed, and a locking portion that extends vertically from the nut portion 110 to a suspension bolt 102. 121 and 131 are formed with bifurcated locking pieces 120 and 130, and the angle of each locking piece 120 and 130 is such that the bolt portion 103 has an arbitrary inclination angle (approximately 45 degrees). There is disclosed a brace fitting 101 that is screwed and formed so that the inclination angle is enjoyed at the position where the locking portions 121 and 131 are formed.

  The brace mounting structure using the brace fitting 101 locks the locking portions 121 and 131 to the suspension bolt 102 and the tip of the bolt portion 103 screwed into the nut portion 110 against the suspension bolt 102. It is done by touching.

  According to the reinforcing brace mounting structure using the conventional brace fitting 101 as described above, a three-point support structure of the locking portions 121 and 131 and the tip of the bolt portion 103 is formed on the suspension bolt 102.

JP 2003-138688 A (paragraph number [0012], FIG. 3 to FIG. 4)

  However, in the conventional brace fitting 101, when a tensile force acts on the reinforcing brace during an earthquake or the like, a gap is formed between the tip of the bolt portion 103 and the suspension bolt 102, and the locking portions 121 and 131 are formed. This is a support structure of only two points on one side. Therefore, the reinforcing brace sometimes falls.

  In addition, if a three-point support structure is secured when the suspension bolt is not arranged vertically due to construction errors or the like, it is fixed at a predetermined angle (for example, 45 °) with respect to the suspension bolt, and the lower end of the reinforcing brace May not be arranged at a desired position. In this case, it is necessary to adjust the angle of the suspension bolt, and there is a problem in that it takes time for construction.

  The present invention solves the above-described problems, and an object of the present invention is to propose a brace fitting capable of simply and reliably fixing a reinforcing brace and a ceiling structure using the brace fitting.

In order to solve the above-described problems, the brace fitting of the present invention is locked to a suspension bolt suspended from a ceiling casing in a state of being attached to the distal end of the reinforcing brace, and the distal end of the reinforcing brace A board for screwing the mounting bolts provided thereon, a first locking piece extending from the top of the board and having a first locking part capable of locking to the suspension bolt; and A second locking piece extending from the bottom of the substrate and having a second locking portion capable of locking to the suspension bolt; and the first locking piece and the second locking piece. And a third locking piece formed with a third locking portion that can be locked to the suspension bolt, and the position of the third locking portion is the position of the mounting bolt. The mounting bolt extends in the axial direction from the upper end of the tip surface from the height of the contact point between the tip surface and the suspension bolt. To be within a range of line height, the third locking piece is characterized in that it is arranged.

  Since the brace bracket is locked to the suspension bolt by four points of the mounting bolt screwed into the substrate, the first locking piece, the second locking piece, and the third locking piece, The reinforcement brace can be more reliably attached to the suspension bolt. In addition, even if the suspension bolt is inclined due to construction errors, etc., by changing the angle of the reinforcing brace with the third locking portion as the origin, it is possible to It is possible to ensure three-point support by the tip of the bolt and the first locking portion or the second locking portion.

In addition , since the third locking portion is disposed at a position close to the contact point between the suspension bolt and the mounting bolt, the suspension bolt is maintained in order to maintain the state where the suspension bolt is gripped by the third locking portion and the mounting bolt. The mounting bolt is difficult to separate and the reinforcing brace is difficult to fall. Moreover, the third locking piece is arranged on a substantially extended line of the mounting bolt, so that the third locking piece is arranged at a position along the direction of the stress transmitted from the reinforcing brace. Therefore, the load applied to the base portion of the third locking piece is minimal, and the third locking piece can be reduced in cross section (thinned).

Further, in the brace fitting, if the first locking portion, the second locking portion, and the third locking portion are threaded, the first locking portion, the second locking portion, the third locking portion. The stop portions engage with the screws of the suspension bolts, respectively, and can be more securely locked to the suspension bolts.
Here, the screw processing may be a female screw formed corresponding to the male screw of the suspension bolt, or may be a mountain cut that can be inserted into a valley portion in the thread shape of the suspension bolt. The shape is not limited.

  The third locking portion may protrude toward the substrate side from the first locking portion and the second locking portion. If the third locking part protrudes slightly toward the board side from the straight line connecting the first locking part and the second locking part, an error such as an inclination of the suspension bolt has occurred. However, the angle of the reinforcing brace can be adjusted with the third locking portion as the origin, and a plurality of locking portions (first locking portion, second locking portion, third locking portion) can be used. This is suitable because it can be locked to the suspension bolt.

  Further, 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 via the brace bracket, and a predetermined height from the ceiling casing via the suspension bolt. And at least one of the first locking portion or the second locking portion, the third locking portion, and the board is screwed into the substrate. The reinforcing brace is attached to the suspension bolt by engaging the tip of the mounting bolt with the suspension bolt.

  According to such a ceiling structure, the brace bracket has three points: at least one of the first locking portion or the second locking portion, the third locking portion, and the tip of the mounting bolt screwed into the board. Or since it is latched by the suspension bolt by 4 points | pieces, the reinforcement brace is attached reliably. Therefore, a ceiling structure having a sufficient proof strength against a stress acting in a strong wind or an earthquake is provided.

  According to the brace fitting of the present invention and the ceiling structure using the brace fitting, the reinforcing brace can be fixed easily and reliably.

Preferred embodiments of the present invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.
In the description, each direction is unified to the direction shown in FIG.

  Here, FIG. 1 is a figure which shows the whole brace metal fitting which concerns on this embodiment, Comprising: (a) is a perspective view desired from the right rear, (b) is a perspective view desired from the right front. 2A and 2B are diagrams showing the brace fitting shown in FIG. 1, wherein FIG. 2A is a side view viewed from the right side, and FIG. 2B is a front view viewed from the front. 3 is a diagram showing details of the brace fitting shown in FIG. 1, wherein (a) is a plan view of the first locking piece viewed from below, and (b) is a plan view of the second locking piece viewed from below. , (C) is a plan view of the third locking piece viewed from below. FIG. 4A is a side view of the ceiling structure according to the present embodiment viewed from the right side, and FIG. 4B is an enlarged view showing details of the attachment portion of the reinforcing brace. 5 (a) and 5 (b) are views showing a mounting state of the brace fitting, and are side views desired from the right side.

A brace fitting 1 according to the present embodiment is a member for locking to a suspension bolt suspended from a ceiling casing in a state of being attached to the tip of a reinforcing brace 3 (see FIG. 4), and is shown in FIG. Thus, it is comprised from the board | substrate 10, the 1st locking piece 11, the 2nd locking piece 12, and the 3rd locking piece 13. As shown in FIG.
In addition, the material which comprises the brace metal fitting 1 is not limited, It can select and use from well-known materials suitably. The member thickness of the brace fitting 1 is not limited, and may be set as appropriate.

  As shown in FIGS. 1 and 2, the brace fitting 1 is formed with a substrate 10, a first locking piece 11, and a second locking piece 12 by bending a metal plate. Moreover, as shown in FIG.1 (b), the wall parts 10c, 11c, and 12c are standingly arranged in the brace metal fitting 1 by bending about the left side surface of the brace metal fitting 1. As shown in FIG. Further, a third locking piece 13 formed by bending the upper part of the wall 12c so as to be parallel to the second locking piece 12 is extended to the upper end of the wall 12c. In addition, the brace metal fitting 1 has enhanced strength against stress that is bent in the vertical direction (compressive force in the vertical direction) because the walls 10c, 11c, and 12c are formed.

The substrate 10 is a rectangular intermediate portion formed by bending a substantially L-shaped metal plate, and is formed with a bolt hole 10a for screwing a mounting bolt provided at the tip of the reinforcing brace 3. ing. The substrate 10 has a wall portion 10c formed by bending the left end portion forward.
The shape of the substrate 10 is not limited to a rectangle, and may be set as appropriate.

  The bolt hole 10a is a substantially circular hole whose inner diameter is formed according to the outer diameter of the mounting bolt, and the inner peripheral surface 10b of the bolt hole 10a is threaded according to the screw shape of the mounting bolt. Has been.

  The bolt hole 10a only needs to be formed at a position where the tip of the screwed mounting bolt can come into contact with the suspension bolt, and the formation position is not limited. In the embodiment, as shown in FIG. 1B, the height direction of the substrate 10 is formed near the middle, and the right and left direction is formed from the right. As shown in FIG. 2B, the bolt hole 10 a is formed so that the center thereof coincides with the center of the locking portion 11 a of the first locking piece 11 as viewed from the front.

  The wall portion 10c is a portion formed to increase the proof stress of the substrate 10. As shown in FIG. 1B and FIG. 2A, the wall portion 10c of the substrate 10 is compared with the wall portion 11c of the first locking piece 11 and the wall portion 12c of the second locking piece 12, The wall height is low and the substrate 10 is prevented from being deformed due to the bending process when the first locking piece 11 and the second locking piece 12 are formed. That is, by forming the wall portion 10c low, an escape area for the surplus portion of the metal member generated during the bending process is formed.

As shown in FIGS. 1 and 2, the first locking piece 11 extends from the upper part of the substrate 10 by bending the upper part of the substrate 10 forward with respect to the substantially L-shaped metal plate. It is the formed rectangular part.
In the present embodiment, the inner angle φ1 formed by the substrate 10 and the first locking piece 11 is formed to be in the range of 85 ° to 95 °. Note that the angle of the inner angle φ1 formed by the substrate 10 and the first locking piece 11 is not limited, but in this embodiment, the angle of the inner angle φ1 is about 90 °, and the first locking piece 11 and the substrate It is comprised so that the attachment bolt screwed in 10 may become parallel. Thereby, when using as a ceiling structure, it is comprised so that the tension | tensile_strength which acts on a reinforcement bolt may be directly transmitted to a suspension bolt, the burden to the 1st locking piece 11 is reduced, and the thin wall of the brace metal fitting 1 is comprised. We are trying to make it.

  On the left side of the first locking piece 11, as shown in FIG. 1B and FIG. 2A, there is a wall portion 11c formed by bending the end portion in the front downward direction. Although the shape of the wall part 11c is not limited, in this embodiment, as shown to Fig.2 (a), it should have a taper that the height of a wall becomes low as it approaches the board | substrate 10. FIG. Thus, deformation of the substrate 10 and the first locking piece 11 during the bending process is prevented. That is, the taper of the wall portion 11c forms a refuge for the surplus portion of the metal member generated during the bending process.

  In addition, as shown in FIG. 3A, the first locking piece 11 has a first engagement that can be locked to the suspension bolt by cutting out a part of a substantially rectangular plate. A stop 11a is formed.

  As shown in FIG. 3A, the first locking portion 11a is a substantially L-shaped recess formed so that the right side is open, and the tip (upper end) thereof corresponds to the outer diameter of the suspension bolt. An arc having an inner diameter is exhibited. Further, the inner peripheral surface 11b of the arc-shaped portion of the first locking portion 11a is threaded according to the screw shape of the suspension bolt (see FIG. 1 (a)).

  In addition, in this embodiment, the recessed part (1st latching | locking part 11a) is formed in the 1st latching piece 11, and it is comprised so that the latching to a suspension bolt is possible by forming in a hook shape (saddle shape). However, the shape of the first locking piece 11 is not limited and can be appropriately formed in a known shape.

  As shown in FIGS. 1 and 2, the second locking piece 12 is a rectangular shape that extends from the lower portion of the substrate 10 by bending a lower portion of the substrate 10 forward of a substantially L-shaped metal plate. Part. In the present embodiment, the inner angle φ2 formed by the substrate 10 and the second locking piece 12 is formed in a range of 130 ° to 150 °. Note that the angle of the inner angle φ2 formed by the substrate 10 and the second locking piece 12 is not limited, but in this embodiment, the angle of the inner angle φ2 is set to about 140 ° and the reinforcing brace 3 is attached to the suspension bolt. In such a state, it is configured to be inclined at about 40 °.

Moreover, as shown to Fig.1 (a) and FIG.2 (a), it has the wall part 12c formed by bending an edge part upwards on the left side of the 2nd locking piece 12. As shown in FIG. Although the shape of the wall portion 12c is not limited, in the present embodiment, as shown in FIG. 2A, the wall portion 12c has a taper such that the height of the wall decreases as the substrate 10 is approached. Thus, the substrate 10 and the second locking piece 12 are prevented from being deformed during the bending process. That is, the taper of the wall portion 12c forms a refuge for the surplus portion of the metal member generated during the bending process.
Further, the wall portion 12c is integrally formed with the third locking piece 13 by bending the upper portion of the metal piece constituting the wall portion 12c in the right direction.

  Moreover, as shown in FIG.3 (b), the 2nd latching | locking piece 12 has the 2nd latching | locking part 12a which can be latched to a suspending bolt, when the part is notched. .

  As shown in FIG. 3B, the second locking portion 12a is a substantially L-shaped recess formed so that the right side is open, and the tip (front end) thereof corresponds to the outer diameter of the suspension bolt. An arc having an inner diameter is exhibited. Further, the inner peripheral surface 12b of the arc-shaped portion of the second locking portion 12a is threaded according to the thread shape of the suspension bolt (see FIG. 1 (a)).

  In addition, in this embodiment, by forming a recessed part (second locking part 12a) in the second locking piece 12, it is formed in a hook shape (saddle shape) and can be locked to a suspension bolt. However, the shape of the second locking piece 12 is not limited and can be appropriately formed in a known shape.

  As shown in FIGS. 1B and 2B, the third locking piece 13 is a portion formed by bending the upper portion of the wall portion 12c in the right direction, and the second locking piece 13 It is formed so as to be parallel to the piece 12 and disposed between the first locking piece 11 and the second locking piece 12.

  Further, as shown in FIGS. 1A and 1B, the third locking piece 13 is formed with a third locking portion 13 a that can be locked to the suspension bolt. The third locking piece 13 is formed so that the height of the third locking portion 13a is opposite to the tip surface of the mounting bolt screwed into the substrate 10 with the suspension bolt interposed therebetween. (See FIG. 4 (b)). The shape or the like of the third locking piece 13 is not limited. From the height of the contact point between the tip of the mounting bolt 3a and the suspension bolt 2, the extension line in the axial direction of the upper surface of the mounting bolt 3a If the third locking portion 13a is formed within the range h up to the height of the intersection with the side surface of the third locking piece 13 of the suspension bolt 2, the force transmission of the reinforcing brace 3 is excellent. Therefore, it is preferable.

  The 3rd latching | locking part 13a is a recessed part formed in the front-end | tip part (rear end part) of the 3rd latching piece 13, as shown in FIG.3 (c), Comprising: The internal diameter according to the outer diameter of a suspension bolt A circular arc having Further, the inner peripheral surface 13b of the arc-shaped portion of the third locking portion 13a is subjected to screw processing corresponding to the screw shape of the suspension bolt (see FIG. 1 (a)).

  In the present embodiment, the third locking portion 13a is formed so as to slightly protrude rearward as compared with the first locking portion 11a and the second locking portion 12a. The protruding length of the third locking portion 13a is not limited, and may be appropriately set according to the bolt diameter of the suspension bolt, the installation angle of the reinforcing brace, etc. It is assumed that the dimensions are small enough not to prevent the portion 12a and the third locking portion 13a from simultaneously contacting the suspension bolt 2. In this embodiment, with respect to a suspension bolt having a bolt diameter of 9 mm to 12 mm, the third locking portion 13a is 0.1 mm to 2 mm than the straight line connecting the first locking portion 11a and the second locking portion 12a. It is formed so as to protrude 5 mm. In addition, it cannot be overemphasized that the 3rd latching | locking part 13a does not necessarily protrude to the back side compared with the 1st latching | locking part 11a and the 2nd latching | locking part 12a.

  Here, in the present embodiment, the third locking piece 13 is formed integrally with the upper end of the wall portion 12c of the second locking piece 12 so as to extend upward from the second locking piece 12. However, the method of forming the third locking piece 13 is not limited. For example, the first locking piece 11 can be formed integrally with the wall portion 11c of the first locking piece 11. You may form so that it may extend below from.

  In the present embodiment, the third locking piece 13 is formed so as to extend from the wall portion 12c of the second locking piece 12 by bending a part of the same metal plate. The third locking piece 13 may be formed by fixing another member having an L-shaped cross section to the second locking piece 12. Further, the third locking piece 13 may be joined to the second locking piece 12 with the lower end surface of the third locking piece 13 attached to the upper end surface of the second locking piece 12.

Next, the ceiling structure A according to the present embodiment will be described.
As shown in FIG. 4A, the ceiling structure A has a plurality of suspension bolts 2 and 2 suspended at a predetermined interval from a ceiling casing B, and a suspension bolt 2 at the upper end via the brace fitting 1. And a ceiling frame 4 disposed at a predetermined interval from the ceiling frame B via suspension bolts 2 and 2.

  The suspension bolt 2 is attached at its tip with an attachment member 2a for suspending the ceiling frame 4, and the outer peripheral surface is threaded. 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 B, and the like.

  As shown in FIG. 4A, the reinforcing brace 3 has an upper end attached to the upper part of the suspension bolt 2 via the brace fitting 1 and a lower end fixed to the ceiling frame 4. Suspended. In the present embodiment, the reinforcing brace 3 and the horizontal plane are arranged so that the angle is about 40 °. The angle formed between the reinforcing brace 3 and the horizontal plane is not limited to about 40 °, and may be set as appropriate. However, from the viewpoint of improving the proof stress, the angle is in the range of 30 ° to 50 °. Of these, it is preferably set to be in the range of 35 ° to 45 °.

  A battledore bolt as a mounting bolt 3 a is fixed to the upper end of the reinforcing brace 3. The brace fitting 1 is locked to the suspension bolt 2 in a state in which the brace plate bolt is screwed into the brace fitting 1.

  The reinforcing brace 3 is attached to the suspension bolt 2 by first attaching the first fixing portion 11a from the left side of the suspension bolt 2 with the attachment bolt 3a of the reinforcement brace 3 screwed into the substrate 10 of the brace fitting 1. And the 1st latching | locking part 11a, the 2nd latching | locking part 12a, and the 3rd latching | locking part 13a of the brace metal fitting 1 are made to latch on the suspension bolt 2, sliding the suspension bolt 2 in the 2nd latching | locking part 12a.

  Next, as shown in FIG. 4 (b), the first locking portion 11a, the second locking portion 12a, and the third locking portion 13a of the brace fitting 1 are locked to the suspension bolt 2, By rotating the reinforcing brace 3 around the center of the reinforcing brace 3, it is screwed into the brace fitting 1 so that the tip of the mounting bolt 3a contacts the suspension bolt 2.

  Thereby, at least one of the first locking portion 11a or the second locking portion 12a, the third locking portion 13a, and the tip of the mounting bolt 3a screwed into the substrate 10 are engaged with the suspension bolt 2. The reinforcement brace 3 is attached to the suspension bolt 2 after being stopped (see FIGS. 5A and 5B). In addition, all the points of the 1st latching | locking part 11a, the 2nd latching | locking part 12a, the 3rd latching | locking part 13a, and the attachment bolt 3a contact | abut the suspension bolt 2 because the brace metal fitting 1 elastically deforms. preferable.

  The ceiling frame 4 is a member formed in a lattice shape by a vertical member and a horizontal member, and is a member configured to be able to install a lighting fixture, a decorative board, and the like. Then, as shown in FIG. 4A, the ceiling is suspended by being attached via attachment members 2a, 2a fixed to the tip of the suspension bolt 2 and a reinforcing brace 3 locked to the suspension bolt 2. The casing B is arranged at a predetermined interval.

  As described above, according to the brace fitting 1 according to the present embodiment and the ceiling structure A using the brace fitting 1, at least one of the first locking portion 11a or the second locking portion 12a and the third locking portion. The reinforcing brace 3 is securely attached because it is locked to the suspension bolt 2 by three or four points 13a and the tip of the mounting bolt 3a screwed into the substrate 10. Therefore, the ceiling structure A having sufficient proof stress against the stress acting during strong winds or earthquakes is provided.

  Even if the suspension bolt 2 is not vertical due to construction errors or the like but is inclined, the reinforcing brace 3 is centered on the contact point between the third locking portion 13a and the suspension bolt 2. By changing the angle, the reinforcing brace 3 can be easily installed at a predetermined angle. The reinforcing brace 3 is attached to the suspension bolt 2 at this time by three-point support by the third locking portion 13a, the tip of the mounting bolt 3a, and the first locking portion 11a or the second locking portion 12a. Since it is secured, the certainty of the mounting accuracy is secured.

  Moreover, since the position of the 3rd latching | locking part 13a is arrange | positioned in the position which opposes the front end surface of the attachment bolt 3a on both sides of the suspension bolt 2, a suspension bolt is carried out by the 3rd latching | locking part 13a and the attachment bolt 3a. By gripping 2, the mounting performance is improved. Further, due to the positional relationship between the third locking portion 13a and the mounting bolt 3a, the stress transmission performance from the reinforcing brace 3 to the suspension bolt 2 is excellent. Therefore, the load applied to the base of the third locking piece is minimal, and the third locking piece can be reduced in cross section (thinned). Moreover, since the 3rd latching | locking part 13a and the attachment bolt 3a are arrange | positioned in the near position, the attachment bolt 3a is hard to leave | separate from the suspension bolt 2, and the reinforcement brace 3 does not fall easily.

  In addition, since the first locking portion 11a, the second locking portion 12a, and the third locking portion 13a are threaded, each meshes with the screw of the suspension bolt 2 to make the suspension bolt 2 more reliable. Can be locked.

  Moreover, since the 3rd latching | locking part 13a protrudes in the board | substrate 10 side rather than the 1st latching | locking part 11a and the 2nd latching | locking part 12a, the angle of the reinforcement brace 3 is changed and the 1st latching | locking part 11a or It is possible to easily adjust the height position of the brace fitting 1 with respect to the suspension bolt 2 by releasing the contact between the second locking portion 12a and the suspension bolt 2.

  Further, according to the ceiling structure A according to the present embodiment, if a gap is formed between the suspension bolt 2 and the mounting bolt 3a by applying a tensile force to the reinforcing brace 3 during an earthquake or a strong wind. Even so, since the locking by the three points of the first locking part 11a, the second locking part 12a, and the third locking part 13a is secured, the reinforcing brace 3 does not fall.

  Further, even when the angle of the suspension bolt 2 or the reinforcement brace 3 changes due to the stress acting on the ceiling structure A due to an earthquake or a strong wind, it is shown in FIGS. As described above, the second locking portion 12a and the third locking portion 13a and the mounting bolt 3a, or the first locking portion 11a, the third locking portion 13a and the mounting bolt 3a are locked by three-point support, The reinforcing brace 3 is prevented from falling.

Heretofore, an example of a preferred embodiment has been described for the present invention. However, the present invention is not limited to the above-described embodiments, and the design of the respective components can be appropriately changed without departing from the spirit of the present invention.
For example, in the above-described embodiment, the case where a brace plate bolt fixed to a member made of a shape steel or the like is used as the reinforcement brace has been described. However, the configuration of the reinforcement brace is not limited, for example, a steel bar, It is possible to use a known brace member as appropriate, such as using a bolt rod.

In the above embodiment, the lower end of the reinforcing brace is fixed to the ceiling frame. However, the fixing position of the lower end of the reinforcing brace is not limited, and other suspension bolts adjacent to the suspension bolt with the upper end fixed. You may fix to the attachment member attached to the lower part of a volt | bolt and the lower end of another suspension bolt.
Moreover, in the said embodiment, although the 1st latching | locking part and the 2nd latching | locking part shall be formed so that the right side may open about a brace metal fitting, opening of a 1st latching | locking part and a 2nd latching | locking part is The left side may be sufficient and the shape of a brace metal fitting is not limited to the above.

In addition, the wall portion may be formed as necessary, and the wall portion needs to be formed when the material constituting the brace bracket has sufficient proof stress against the stress acting on the reinforcing brace. There is no.
Moreover, in the said embodiment, although the board | substrate, the 1st locking piece, and the 2nd locking piece were formed by processing one metal plate, the board | substrate, the 1st locking piece, and the 2nd You may comprise a brace metal fitting by joining what was formed by a separate member as a locking piece, respectively.

In the above embodiment, the first locking portion, the second locking portion, and the third locking portion are each threaded. However, for example, only a part is threaded, Threading may be performed as necessary, such as without threading.
Further, in the embodiment, as the screw processing, the female screw formed corresponding to the male screw of the suspension bolt is processed, but the convex portion that can be simply inserted into the valley portion in the screw shape of the suspension bolt is provided. It may be formed (cleaved), and its shape is not limited.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole brace metal fitting which concerns on suitable embodiment of this invention, Comprising: (a) is a perspective view desired from the right rear, (b) is a perspective view desired from the right front. It is a figure which shows the brace metal fitting which concerns on suitable embodiment of this invention, Comprising: (a) is a side view desired from the right side, (b) is a front view desired from the front. It is a figure which shows the detail of the brace metal fitting which concerns on suitable embodiment of this invention, Comprising: (a) is a top view which desires a 1st locking piece from the downward direction, (b) is a plane which desires a 2nd locking piece from the downward direction The figure and (c) have each shown the top view which desires a 3rd locking piece from the downward direction. (A) is a side view which desires the ceiling structure which concerns on suitable embodiment of this invention from right side, (b) is an enlarged view which shows the detail of the attaching part of the reinforcement brace. (A) And (b) is a figure which shows the attachment condition of a brace metal fitting, Comprising: It is a side view desired from the right side. It is a side view which shows the conventional brace metal fittings.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Brace metal fitting 10 Board | substrate 10a Bolt hole 11 1st latching piece 11a 1st latching part 12 2nd latching piece 12a 2nd latching part 13 3rd latching piece 13a 3rd latching part 2 Hanging bolt 3 Reinforcement brace 4 Ceiling frame A Ceiling structure B Ceiling frame

Claims (3)

A brace fitting that is secured to a suspension bolt that is suspended from a ceiling housing in a state of being attached to the tip of a reinforcing brace,
A board into which a mounting bolt provided at the tip of the reinforcing brace is screwed;
A first locking piece extending from the top of the substrate and having a first locking portion capable of locking to the suspension bolt;
A second locking piece extending from the bottom of the substrate and having a second locking portion that can be locked to the suspension bolt;
A third locking piece disposed between the first locking piece and the second locking piece and having a third locking portion that can be locked to the suspension bolt. ,
The position of the third locking portion is within a range from the height of the contact point between the tip surface of the mounting bolt and the suspension bolt to the height on the axial extension line of the mounting bolt from the upper end of the tip surface. As described above, the third locking piece is arranged,
Brace bracket. The first locking part, the second locking part and the third locking part are subjected to screw processing,
The brace bracket according to claim 1 . A suspension bolt suspended from the ceiling frame;
Reinforcing braces whose upper ends are attached to the suspension bolts via the brace fitting according to claim 1 or 2 ,
A ceiling frame disposed at a predetermined interval from the ceiling casing via the suspension bolt,
At least one of the first locking portion or the second locking portion, the third locking portion, and a tip of a mounting bolt screwed into the substrate are locked to the suspension bolt. The reinforcing brace is attached to the suspension bolt by
Ceiling structure.

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