JP6261375B2 - Brace upper mounting bracket - Google Patents

Description

  The present invention relates to a brace upper mounting bracket that has a ceiling structure and connects an upper end portion of a brace to a suspension bolt.

  In a general ceiling structure, a ceiling plate support frame that supports the ceiling plate is connected to and suspended from the lower end of the suspension bolt. Further, in many cases, in such a ceiling structure, a brace is installed between the upper part of the suspension bolt and the ceiling plate support frame in order to improve the earthquake resistance. And as a brace upper mounting bracket that connects the upper end of the brace to the suspension bolt, a U-shaped receiving bracket (locking member) having a pressure receiving surface (locking tooth portion), and the bracket can be rotated. The structure provided with the press-supported metal fitting (connection member) is proposed (refer patent document 1).

  In the brace upper mounting bracket described in Patent Document 1, when the brace attached to the pressing bracket is in the downward direction along the hanging bolt, the pressing edge portion (pressing portion) provided on the pressing bracket receives the hanging bolt from the pressure receiving surface of the receiving bracket. The receiving bracket can move up and down with respect to the suspension bolt together with the pressing bracket. When the brace attached to the bracket is rotated away from the suspension bolt, the pressing edge of the bracket presses the suspension bolt against the pressure-receiving surface of the bracket, so that the bracket is attached to the suspension bolt together with the bracket. Fixed. Here, in the brace upper mounting bracket described in Patent Document 1, the pressing edge portion of the pressing bracket is formed in an arc shape that forms a part of a circle around the rotation axis. With this configuration, the position where the pressing edge is in contact with the suspension bolt is constant within the predetermined rotation angle range of the metal fitting, and the pressure receiving surface of the metal fitting is engaged with the threaded portion of the suspension bolt. Thus, the mounting angle of the brace can be adjusted within the rotation angle range.

JP 2003-199800 A

  In the brace upper mounting bracket described in Patent Document 1, the pressing edge of the pressing bracket is formed in an arc shape that forms a part of a circle centering on the rotation axis, so that the pressure receiving surface of the receiving bracket is a hanging bolt. It is comprised so that a press metal fitting can be rotated in the state which meshed | engaged with the thread part. However, in such a state, if the pressing edge portion is in strong pressure contact with the thread of the suspension bolt, a strong force is required to rotate the press fitting, and adjustment of the brace attachment angle becomes difficult. Further, if the pressing metal is forced to rotate using the lever action, the suspension bolt may be deformed. On the other hand, if the force with which the pressing edge is pressed against the suspension bolt is weakened, the meshing between the thread of the suspension bolt and the pressure receiving surface will be weakened and the earthquake resistance will be reduced, so to satisfy the required earthquake resistance The number of braces attached to the ceiling must be increased.

  The present invention is an attempt to solve this problem. In the brace upper mounting bracket described above, the bracket can be rotated relatively easily with the suspension bolt strongly pressed by the pressing edge of the bracket. An object of the present invention is to provide a brace upper mounting bracket that can be attached.

The present invention is a brace upper mounting bracket for connecting the upper end of the brace to a suspension bolt,
A pressing bracket having a brace fixing portion for fixing the upper end portion of the brace, a folded portion having a pressure receiving surface having a substantially arc shape in a plan view that comes into contact with the suspension bolt on the inner surface, and a horizontal rotation shaft. And a receiving bracket having a rotation holding portion that rotatably holds the pressing bracket, and a pressing portion having a substantially arc shape centering on the rotation shaft is provided at a peripheral portion of the pressing bracket. An edge portion and a non-pressing edge portion formed on at least one side of the pressing edge portion and shorter than the pressing edge portion from the rotation shaft are formed. When the pressing edge is rotated to an angle at which the pressing edge is the height of the rotation shaft in a state where the pressing edge is disposed between the folded portion and the pressing metal, the pressing edge of the pressing metal and the pressure receiving surface of the receiving metal The suspension bolt is clamped, and the bracket is fixed so that it cannot move up and down with respect to the suspension bolt. When the pressing bracket is rotated at an angle that is the height of the pivot shaft, the suspension bolt is not clamped between the pressing bracket and the receiving bracket, so that the receiving bracket is in an unlocked state in which it can move up and down with respect to the suspension bolt. Further, the brace upper mounting bracket includes a flexible thin metal plate interposed between the pressing edge and the suspension bolt in the fixed state.

  In such a configuration, the brace upper mounting bracket can be moved up and down along the suspension bolt by rotating the retainer bolt in a state where the suspension bolt is disposed between the folded portion of the bracket and the retainer. It can be converted into a fixed release state and a fixed state in which the vertical movement is impossible with respect to the suspension bolt. Therefore, the brace upper mounting bracket of the present invention is a stage in which the brace upper mounting bracket is attached to the lower part of the suspension bolt and the brace upper mounting bracket is raised to a desired height, like the brace upper mounting bracket described in Patent Document 1. Thus, if the brace is pivoted so that the brace upper mounting bracket is fixed, the brace upper mounting bracket can be fixed at a predetermined height of the suspension bolt. And in this invention, since the press edge part has comprised the substantially circular arc shape centering on a rotating shaft, in the fixed state in which a press edge part becomes the height of a rotating shaft, the pressure receiving surface of a metal fitting The distance between the metal fittings and the metal fittings is substantially constant, so that the suspension bolt can be clamped with a substantially constant force within a rotation angle range where the fixed state is achieved.

  Here, in the present invention, in the fixed state of the brace upper mounting bracket, a flexible thin metal plate is interposed between the pressing edge and the suspension bolt. That is, in the fixed state, the pressing edge does not directly contact the thread of the suspension bolt, and presses the suspension bolt with a thin metal plate sandwiched between the suspension bolt. For this reason, in the present invention, even when the suspension bolt is strongly pressed by the pressing edge portion in the fixed state, the friction when rotating the metal fitting as compared with the conventional configuration is equivalent to the amount of the metal thin plate interposed. The resistance is reduced, and the pressing bracket can be rotated relatively easily.

  In the present invention, it is proposed that the thin metal plate is made of a metal material harder than the pressing edge portion of the metal fitting. The “hardness” of the metal material described here is an indentation hardness measured by Vickers hardness. According to such a configuration, when the suspension bolt is pressed by the pressing edge, the metal thin plate can suitably prevent the indentation due to the thread of the suspension bolt from being formed on the pressing edge. When an indentation is formed on the pressing edge, there is a problem that the space between the pressure receiving surface and the pressing edge is increased by the amount of depression, and the force to hold the suspension bolt is reduced. When doing, the problem that the frictional resistance between a press edge part and a suspension bolt becomes large also arises. If the pressing edge is made of a hard metal material in order to prevent the formation of indentations, the material cost will increase, and the processing will become difficult as the material becomes harder. If it comprises, the usage-amount of a hard metal material can be reduced and the process of a metal fitting will also become easy.

  Further, in the present invention, the pressing bracket includes a pair of flat plate portions arranged to face each other with a gap therebetween, and the pressing edge portion is configured by a side edge of the pair of flat plate portions, and the fixed state And it is proposed that the said metal thin plate is interposed between the side edge of a pair of flat plate part which comprises a press edge part, and a suspension bolt.

  In such a configuration, in a fixed state, the thin metal plate is pressed by the suspension bolt d from two places spaced by the pressing edge, and bends in a circular arc shape so as to follow the cross-sectional shape of the suspension bolt. In this state, press the suspension bolt. For this reason, in this structure, the area which presses a suspension bolt can be increased compared with the conventional structure which presses a suspension bolt directly by a press edge part. And when this presses a suspension bolt strongly, it can disperse | distribute the load added to a press edge from the thread of a suspension bolt, and it can prevent that the impression by a thread is formed in a press edge. Become.

  As described above, according to the present invention, in a fixed state, a metal thin plate is interposed between the pressing edge of the metal fitting and the suspension bolt, so that the pressing edge is strongly pressed against the suspension bolt. Even in this state, it is possible to relatively easily turn the metal fitting as compared with the conventional configuration.

It is explanatory drawing which shows the ceiling structure using the brace upper mounting bracket 1 of Example 1. FIG. It is a side view of the brace upper mounting metal fitting 1 of Example 1, (a) shows the state which assembled | attached the receiving metal fitting 2 and the metal fitting 3, and (b) shows the state which isolate | separated the metal fitting 2 and the metal fitting 3. . It is a top view of the brace upper mounting bracket 1, (a) shows the state which assembled | attached the receiving metal fitting 2 and the pressing metal 3, and (b) shows the state which isolate | separated the receiving metal 2 and the pressing metal 3. (A) is a plan view of the metal fitting 2, (b) is a side view of the metal fitting 2, and (c) is a central longitudinal side view of the metal fitting 2. (A) is a side view of the metal fitting 3, (b) is a central longitudinal side view of the metal fitting 3, and (c) is a cross-sectional view taken along line AA in (b). (A) is a side view of the metal fitting 3 in a state where the metal thin plate 4 is attached, and (b) is a cross-sectional view taken along line AA in (a). (A) is a vertical side view of the brace upper mounting bracket 1 in a fixed state, and (b) is a vertical side view of the brace upper mounting bracket 1 in a fixed release state. (A) is the A partial enlarged view in Fig.7 (a), (b) is the B partial enlarged view in FIG.7 (b). It is a fragmentary sectional view in the planar view of the brace upper mounting bracket 1, (a) shows a fixed state, (b) shows a fixed release state. It is explanatory drawing which shows the correspondence of the rotation angle of the press metal fitting 3, and the fixed state of the brace upper attachment metal fitting 1. FIG. It is explanatory drawing which shows the procedure which connects the upper end part of the brace f to the suspension bolt d using the brace upper mounting bracket 1 of Example 1. FIG. It is explanatory drawing which shows the procedure which connects the upper end part of the brace f to the suspension bolt d using the brace upper mounting bracket 1 of Example 1 continued from FIG. (A) is a top view of the metal fitting 2a which concerns on Example 2, (b) is a side view of the metal fitting 2a, (c) is a rear view of the metal fitting 2a. It is a side view of the brace upper mounting bracket 1a of Example 2, (a) shows a fixed release state, (b) shows a fixed state. (A) is a top view of the metal fitting 2a of the state which attached the metal thin plate 4a which concerns on Example 3, (b) is a side view of the metal fitting 2a. It is a side view of the brace upper mounting bracket 1b of Example 3, (a) shows a fixed release state, (b) shows a fixed state. It is a fragmentary sectional view in the planar view of the brace upper attachment metal fitting 1c of Example 4, (a) shows a fixed state, (b) shows a fixed release state.

  Embodiments of the present invention are described according to the following examples.

  FIG. 1 is a construction example of a ceiling structure using the brace upper mounting bracket 1 of the present embodiment. Such a ceiling structure has a ceiling support frame a in which bowl-shaped ceiling base materials are assembled in a lattice shape, a ceiling plate b supported at the lower part of the ceiling support frame a, and an upper end portion embedded in a ceiling slab c. A suspension bolt d that hangs vertically and a hanger e that connects the ceiling support frame a to the lower end of the suspension bolt d are provided. A reinforcing brace f is disposed on the ceiling structure. The brace f is installed between the upper part of the suspension bolt d and the hanger e at an angle of about 45 ° with respect to the vertical direction. The upper end of the brace f is connected to the upper part of the suspension bolt d via the brace upper mounting bracket 1 of the present embodiment. The lower end of the brace f is connected to the ceiling support frame a and the hanger e via a known brace lower mounting bracket g. Since this ceiling structure can widely adopt the configuration of the existing ceiling structure except for the brace upper mounting bracket 1 according to the present invention, detailed description thereof will be omitted.

  As shown in FIGS. 2 and 3, the brace upper mounting bracket 1 is secured to the bracket 2 that is fitted around the suspension bolt d and the upper end of the brace f, and is rotatably held by the bracket 2. And a flexible metal thin plate 4 attached to the metal fitting 3. As shown in FIGS. 2 and 3, the metal fitting 2 and the metal fitting 3 are configured to be detachable, and the metal fitting 3 is assembled to the metal fitting 2 with the metal fitting 2 being fitted on the suspension bolt d. Thus, the brace upper mounting bracket 1 can be attached to the suspension bolt d.

  As shown in FIG. 4, the metal fitting 2 is formed by folding a metal plate piece into a substantially U shape in a plan view at a central portion. And a rotation holding portion 11 that is rotatably held.

  As shown in FIG. 4, the folded portion 10 has a semi-cylindrical shape, and an inner side surface having a substantially arc shape in plan view is used as a pressure receiving surface 12 that comes into contact with the outer peripheral surface of the suspension bolt d. The inner diameter of the pressure receiving surface 12 is set to be approximately equal to the outer diameter of the suspension bolt d. Further, the pressure receiving surface 12 is formed with a female thread-like groove shape that can be fitted to a thread formed on the outer peripheral surface of the suspension bolt d.

  As shown in FIG. 4, the rotation holding unit 11 is composed of a pair of vertical side plates 18 and 18 that extend in the horizontal direction from both end edges of the folded-back unit 10. The side plates 18 and 18 are disposed to face each other at an interval in the horizontal direction, and a holding gap 13 is formed between the side plates 18 and 18 so as to hold the pressing metal 3. The holding gap 13 is set to be slightly wider than the outer diameter of the suspension bolt d, and is configured so that the suspension bolt d can be fitted into the retention gap 13 and brought into contact with the pressure receiving surface 12 of the folded portion 10. ing. In addition, a shaft hole 14 for pivotally supporting the press fitting 3 is provided in the rotation holding portion 11 so as to penetrate the side plates 18 and 18 in a direction orthogonal to each other. Further, the side plate 18 is formed with a guide groove 15 for communicating the shaft hole 14 with the lower edge of the side plate 18. The guide groove 15 is a groove having a width substantially the same as the diameter of the shaft hole 14, and the rotating shaft 21 (see FIG. 5) provided in the metal fitting 3 is connected to the side plate 18 via the guide groove 15. It is comprised so that it can fit in the axial hole 14 from the lower edge.

  In addition, a pair of locking claws 16 and 16 that protrude slightly inward are formed on the upper edge of the rotation holding portion 11 in the vicinity of the folded portion 10. The interval between the latching claws 16 and 16 is set to be slightly narrower than the diameter of the suspension bolt d, and the suspension bolts d fitted inside the holding gap 13 are placed outside with the latching claws 16 and 16 outward. When it is pushed into the folded-back portion 10 side so as to be elastically deformed, the catch 2 is locked by the locking claw 16 so as not to drop off the suspension bolt d.

  As shown in FIG. 5, the presser bracket 3 includes a plate-shaped presser main body 20 and a pin 22 that forms a rotating shaft 21. The metal fitting main body 20 is arranged in parallel so that the pair of flat plate portions 23 and 23 are horizontally opposed to each other through the bent portion 24 by folding the metal plate piece into a substantially U-shaped cross section at the center portion. It is made. The pressing metal body 20 has a shape slightly thinner than the holding gap 13 so that it can be held in the holding gap 13 of the metal fitting 2.

  As shown in FIG. 5A, the presser fitting body 20 includes a turning portion 25 that is rotatably held in the holding gap 13 of the support fitting 2, and a brace fixing portion 26 that extends from the turning portion 25. It consists of.

  An upper end portion of the brace f is fixed to the brace fixing portion 26. Specifically, the brace fixing portion 26 has a rectangular shape extending in the radial direction from the rotation shaft 21 of the pressing metal 3. Screw insertion holes 28 and 28 through which the tapping screw h is inserted are formed at the upper end portion of the brace f, and the upper end portion of the brace f is externally fitted to the brace fixing portion 26 as shown in FIGS. By bracing with the screw h, the brace f is fixed to the presser fitting 3 at a constant angle.

  As shown in FIG. 5 (c), a pin insertion hole 31 that penetrates both flat plate portions 23, 23 in the thickness direction is formed in the rotation portion 25, and the rotation shaft 21 is inserted into the pin insertion hole 31. The pin 22 to be formed is fitted. The pin 22 is formed by caulking two metal pieces, and includes a horizontal rotation shaft 21 that protrudes outside the flat plate portions 23 through both flat plate portions 23, and both ends of the rotary shaft 21. The heads 32 and 32 are formed.

  The brace fixing part 26 extends from the peripheral part of the rotating part 25 as described above. Further, as shown in FIG. 5A, a pressing edge portion 33 having an arc shape in a side view is formed on the other peripheral portion of the rotating portion 25. The arc shape of the pressing edge 33 is centered on the rotation shaft 21. The length R from the rotating shaft 21 to the pressing edge 33 is the height position of the rotating shaft 21 when the pressing edge 33 is made the same height as the rotating shaft 21, and the pressure edge 33 and the pressure receiving surface. 12 is set to a length at which the suspension bolt d is clamped. On the other hand, the non-pressing edge part 34 whose length from the rotating shaft 21 is shorter than the pressing edge part 33 is formed on both sides of the pressing edge part 33 at the peripheral part of the rotating part 25.

  The metal thin plate 4 is a flexible strip metal plate made of stainless steel. As shown in FIG. 6, the thin metal plate 4 has a thickness of about 0.5 mm, and the width is substantially the same as that of the presser body 20. As shown in FIG. 6A, the thin metal plate 4 is arranged around the pressing edge portion 33 and the non-pressing edge portion 34 in a bent state, and one end of the metal thin plate 4 is attached to the pressing metal body 20 by a screw 40. It is fixed to the bent portion 24. Here, the stainless steel constituting the metal thin plate 4 is harder (has higher Vickers hardness) than the metal material (steel material) constituting the metal fitting body 20.

  As shown in FIGS. 7 (a), 8 (a), and 9 (a), the brace upper mounting bracket 1 is attached to the suspension bolt d, and the folded portion 10 and the pressing bracket 3 of the receiving bracket 2 are attached. In the state in which the suspension bolt d is disposed between them, when the pressing bracket 3 is rotated such that the pressing edge portion 33 is positioned at the height of the rotation shaft 21, the receiving bracket 2 is moved relative to the suspension bolt d. It becomes a fixed state that cannot move up and down. Specifically, in such a fixed state, the suspension bolt d is sandwiched between the pressure receiving surface 12 and the pressing edge 33 by narrowing the distance between the pressure receiving surface 12 and the pressing bracket 3 at the height position of the rotating shaft 21. Then, when the outer peripheral surface of the suspension bolt d comes into contact with the pressure receiving surface 12, the bracket 2 cannot move up and down with respect to the suspension bolt d. In such a fixed state, the groove shape of the pressure receiving surface 12 is fitted to the thread of the suspension bolt d. However, by sliding the pressure reception surface 12 along the thread of the suspension bolt d, the metal fitting is received. 2 can be horizontally rotated around the suspension bolt d.

  Here, in the present embodiment, since the metal thin plate 4 is disposed around the pressing edge 33, the brace upper mounting bracket 1 is attached as shown in FIGS. 8 (a) and 9 (a). When it is in a fixed state, the metal thin plate 4 is interposed between the pressing edge 33 and the suspension bolt d. In this state, as shown in FIG. 9A, the metal thin plate 4 is pressed against the suspension bolt d by the pressing edge portion 33 on both sides in the width direction, so that the cross-sectional shape of the suspension bolt d is obtained. To be bent in a circular arc shape so as to follow, and press-contact with the suspension bolt d.

  On the other hand, as shown in FIGS. 8B and 9B, the non-pressing edge 34 is located at the height of the rotating shaft 21 in the state where the brace upper mounting bracket 1 is mounted. When the pressing bracket 3 is rotated in this manner, the brace upper mounting bracket 1 is in a fixed release state in which the receiving bracket 2 can be moved up and down along the suspension bolt d. Specifically, in such a fixed release state, the non-pressing edge 34 is shorter than the pressing edge 33 by the length from the rotating shaft 21 and is received at the height position of the rotating shaft 21. The distance between the metal fitting 2 and the metal fitting 3 is wider than that in the fixed state, and the hanging bolt d is not sandwiched between the metal fitting 2 and the metal fitting 3, so that the metal fitting 2 can be moved up and down along the hanging bolt d.

  In the present embodiment, the arc shape of the pressing edge portion 33 of the metal fitting 3 is centered on the rotation shaft 21 with respect to the longitudinal direction L of the brace f fixed to the brace fixing portion 26 as shown in FIG. It is formed in a rotation angle range of 30 ° to 60 °. For this reason, as shown in FIG. 10, when the angle between the longitudinal direction of the brace f and the vertical direction is 30 ° to 60 °, the pressing edge 33 is positioned at the same height as the rotating portion 25 and the upper portion of the brace The mounting bracket 1 is in a fixed state. When the angle between the longitudinal direction of the brace f and the vertical direction is in the range of 0 ° to 30 ° and 60 ° to 90 °, the non-pressing edge 34 is positioned at the height of the rotating shaft 21 and the brace upper portion is attached. The metal fitting 1 is configured to be in a fixed release state.

  As described above, in this embodiment, the brace f fixed to the brace upper mounting bracket 1 with the brace upper mounting bracket 1 attached to the suspension bolt d is 0 ° to 30 ° or 60 ° to 90 ° with respect to the vertical direction. When the brace upper mounting bracket 1 is rotated to an angle of °, the brace upper mounting bracket 1 can be moved up and down along the suspension bolt d. When the brace f is rotated at an angle of 30 ° to 60 ° with respect to the vertical direction, the brace upper mounting The metal fitting 1 is fixed to the height at that time.

  Next, a specific work procedure for connecting the upper end portion of the brace f to the upper portion of the suspension bolt d using the brace upper mounting bracket 1 of the embodiment will be described.

  First, the upper end portion of the brace f is fixed to the brace fixing portion 26 of the presser fitting 3. Next, as shown in FIG. 11A, the metal fitting 2 is externally fitted to the lower part of the suspension bolt d. At this time, the hanging bolt d is press-fitted between the locking claws 16 and 16 so that the metal fitting 2 is locked so as not to fall off the hanging bolt d. Subsequently, as shown in FIG. 11B, the pressing metal 3 is assembled to the receiving metal 2 fitted on the suspension bolt d so as to be rotatable. As described above, the rotation shaft 21 of the pressing metal 3 can be fitted into the shaft hole 14 from the lower edge of the side plate 18 via the guide groove hole 15.

  After the presser fitting 3 is assembled to the support fitting 2, the brace f is held at an angle of 0 ° to 30 ° or 60 ° to 90 ° with respect to the vertical direction as shown in FIG. The upper mounting bracket 1 is released from the fixed state, and the brace f is lifted upward while maintaining this angle. At this time, since the brace upper mounting bracket 1 is in the unlocked state, it rises along the suspension bolt d as the brace f rises.

  When the brace upper mounting bracket 1 is raised to the required height of the suspension bolt d, as shown in FIG. 12 (b), the brace f is rotated so as to have an angle of 30 ° to 60 ° with respect to the vertical direction. The brace upper mounting bracket 1 is fixed. Thereby, the metal fitting 2 is fixed to the height position of the suspension bolt d at that time, and the upper end part of the brace f is connected to the suspension bolt d.

  As described above, when the upper end of the brace f is connected to the suspension bolt d, the lower end side of the brace f is connected to the ceiling support frame a and the like, so that the installation of the brace f on the ceiling structure is completed. Specifically, even if the brace upper mounting bracket 1 is in a fixed state, the brace upper mounting bracket 1 can be rotated horizontally around the suspension bolt d, and the pressing bracket 3 can be rotated around the rotation shaft 21. For this reason, the position of the lower end portion of the brace f is adjusted by tilting the brace f up and down or horizontally rotating around the vicinity of the upper end portion of the brace f, and is fixed to the ceiling support frame a. The brace lower mounting bracket g is screwed.

  As described above, in the brace upper mounting bracket 1 of the present embodiment, the brace upper mounting bracket 1 attached to the lower portion of the suspension bolt d is suspended by holding and moving the brace f fixed to the brace upper mounting bracket 1. The bolt d can be moved to an arbitrary height and fixed. Therefore, according to the brace upper mounting bracket 1 of the present embodiment, the operator can connect the upper end of the brace f to the upper part of the suspension bolt d without going up to the upper part of the suspension bolt d.

  Further, in the present embodiment, the pressing edge 33 has an arc shape centered on the rotation shaft 21, so that the pressure receiving surface 12 and the pressing surface are pressed in a fixed state where the pressing edge is at the height of the rotation shaft. The interval between the edge portions 33 is constant. For this reason, in the fixed state, the suspension bolt d can be clamped with a constant force between the pressure receiving surface 12 and the pressing edge 33, and the attachment angle of the brace f can be adjusted by rotating the metal fitting 3. .

  In particular, in the present embodiment, since the metal thin plate 4 is interposed between the pressing edge 33 and the suspension bolt d in a fixed state, compared to the conventional configuration in which the pressing edge 33 directly presses the suspension bolt d, The frictional resistance acting between the suspension bolt d and the pressing edge 33 is reduced. For this reason, the brace upper mounting bracket 1 of the present embodiment is in a fixed state and has an advantage that the pressing bracket 3 can be rotated with less force than the conventional configuration.

  Further, in this embodiment, as shown in FIG. 9A, the pressing edge portion 33 is formed by the side edges of the two flat plate portions 23, and each flat plate forming the pressing edge portion 33 in the fixed state. The side edge of the portion 23 is configured to press the suspension bolt d against the pressure receiving surface 12 from two places. For this reason, there is an advantage that the suspension bolt d can be stably held by the pressing edge 33 and the pressure receiving surface 12.

  In particular, in this embodiment, as shown in FIG. 9A, the side edges of the pair of flat plate portions 23 constituting the pressing edge portion 33 are in a fixed state, and both side portions in the width direction of the thin metal plate 4 are hung by bolts. By pressing against d, the thin metal plate 4 is pressed against the suspension bolt d in a state of being bent into a circular arc shape that follows the cross-sectional shape of the suspension bolt d. As described above, in this embodiment, the suspension bolt is compared with the conventional configuration in which the suspension bolt d is directly pressed by the pressing edge 33 by pressing the suspension thin plate 4 in the width direction in pressure contact with the suspension bolt d. The area for pressing d can be increased. For this reason, in the brace upper mounting bracket 1 of the present embodiment, even when the suspension bolt d is strongly pressed by the pressing edge 33, an indentation due to the thread of the suspension bolt d is formed on the pressing edge 33 as compared with the conventional configuration. There is an advantage that it is difficult.

  In particular, in this embodiment, since the metal thin plate 4 is made of a metal material harder than the presser body 20, the indentation due to the thread of the suspension bolt d is formed on the press edge 33. Compared to the case where the main body 20 is made of a hard metal material, it can be prevented with less material costs and processing costs. Therefore, according to such a configuration, the formation of the indentation reduces the force for holding the suspension bolt d in a fixed state, or increases the frictional force acting between the suspension bolt d and the pressing edge 33. Therefore, it can be prevented at a low cost.

  Moreover, in the said Example, since the internal thread shape which can be fitted with the thread formed in the outer peripheral surface of the suspension bolt d is formed in the pressure receiving surface 12, in the fixed state of the brace upper attachment metal fitting 1, The brace upper mounting bracket 1 can be horizontally rotated around the suspension bolt d while preventing the upper mounting bracket 1 from moving up and down.

  In the present embodiment, the configuration of the first embodiment is partially changed. In the following description, only portions different from those in the first embodiment will be described, and components common to the first embodiment will be denoted by the same reference numerals as those in the first embodiment in the text and the drawings, and description thereof will be omitted. .

  In the brace upper mounting bracket 1a of the present embodiment, as shown in FIG. 13, the rotation holding portion 11a of the receiving bracket 2a has a substantially U-shaped cross section. Specifically, the rotation holding unit 11a includes a pair of vertical side plates 18a and 18a that are disposed to face each other in the horizontal direction at intervals, and a horizontal plate unit 35 that connects the side plates 18a and 18a at the upper end. Is done. The rotation holding portion 11a extends from one side edge of the folded portion 10a. The folded portion 10a has a hook shape with the other side edge opened, and a gap 37 wider than the diameter of the suspension bolt d is formed between the other side edge of the folded portion 10a and the side plate 18a. .

  In the present embodiment, as shown in FIG. 14, the metal fitting 3a is rotatably held between a pair of side plates 18a and 18a. The pressing bracket 3a has the same basic configuration as the pressing bracket 3 of the first embodiment. However, the non-pressing edge portion 34 is cut out from the first embodiment so as not to collide with the horizontal plate portion 35 during rotation. Further, the thin metal plate 4 is the same as that of the first embodiment, and is screwed to the bent portion 24 of the metal fitting 3 a and arranged around the pressing edge portion 33.

  In this embodiment, as shown in FIGS. 13 and 14, a gap 37 wider than the diameter of the suspension bolt d is formed between the folded portion 10a and the side plate 18a. The folding | returning part 10a can be externally fitted by the suspension bolt d, without isolate | separating. That is, according to the present embodiment, the brace upper mounting bracket 1a can be easily mounted on the suspension bolt d in a state where the pressing bracket 3a is mounted on the bracket 2a.

  In the present embodiment, the configuration of the second embodiment is partially changed. In the following description, only portions different from those in the second embodiment will be described, and the same components as those in the first or second embodiment will be denoted by common reference numerals in the text and the drawings, and the description thereof will be omitted.

  In the first and second embodiments, the thin metal plate 4 is disposed on the metal fittings 3 and 3a. On the other hand, in the brace upper mounting metal fitting 1b of this embodiment, as shown in FIGS. A thin plate 4a is provided. Specifically, as shown in FIG. 15, the thin metal plate 4a is made of a strip-shaped metal plate similar to that of the first and second embodiments, and one end thereof is fixed to the horizontal plate portion 35 of the metal fitting 2a with screws 40. Then, it hangs down vertically between the holding gap 13 for holding the metal fitting 3a and the folded portion 10a.

  In such a configuration, as shown in FIG. 16 (a), the metal thin plate 4a is in the unlocked state, and the metal thin plate 4a is located at the height position of the rotating shaft 21 between the folded portion 10a and the metal fitting 3a. Be placed. For this reason, as shown in FIG. 16 (b), when the metal fitting 3a is rotated and the pressing edge 33 is pressed against the suspension bolt d to be in a fixed state, the metal thin plate 4a is fixed to the pressing edge 33 and the suspension bolt. It is interposed during d. As described above, the thin metal plate according to the present invention can be interposed between the pressing edge and the suspension bolt in a fixed state even when the metal thin plate is disposed on the metal fitting.

  In the present embodiment, the configuration of the first embodiment is partially changed. In the following description, only parts different from those in the first embodiment will be described, and the same components as those in the first embodiment will be denoted by common reference numerals in the text and the drawings, and the description thereof will be omitted.

  In the first embodiment, the pressing metal body 20 is formed by bending a metal plate piece into a U-shaped cross section, whereas in the brace upper mounting metal fitting 1c of the present embodiment, as shown in FIG. The tool body 20a is formed by a thick metal flat plate 39. In addition, since the side surface shape of the metal fitting main body 20a is the same as Example 1 (refer Fig.5 (a)), illustration is abbreviate | omitted.

  In the first embodiment, the pressing edge portion 33 is formed by the side edges of the two flat plate portions 23 (see FIG. 9), but in this embodiment, as shown in FIG. It is formed by a side edge of a thick metal flat plate 39. For this reason, in this embodiment, as shown in FIG. 17A, the thin metal plate 4 is pressed at the center in the width direction by the pressing edge 33 and pressed against the suspension bolt d. It will be. As described above, even when the pressing edge 33 is constituted by the side edge of one metal flat plate 39, the pressing edge 33 is in a fixed state and the metal thin plate 4 is interposed between the pressing edge 33 and the suspension bolt d. By mounting, the frictional resistance between the suspension bolt d and the pressing edge portion 33 is reduced, and the pressing metal 3 can be rotated relatively easily in a fixed state.

  The brace upper mounting bracket of the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. For example, for example, the brace upper mounting bracket of the present invention is not limited to the ceiling structure of the above embodiment, but can be used for all ceiling structures in which a reinforcing brace is connected to a suspension bolt.

  In the above embodiment, the metal fitting is rotatably held on the metal fitting by fitting the rotation shaft disposed on the metal fitting into the shaft hole formed on the metal fitting. Instead of this configuration, a rotation shaft may be formed on the side of the metal fitting, a shaft hole may be formed on the side of the metal fitting, or a rotation shaft may be provided as a separate member from the metal fitting and the metal fitting.

  Moreover, in the said Example, although only one metal thin plate is used, the metal thin plate which concerns on this invention may be piled up and interposed between a suspension bolt and a pressing metal fitting.

  Moreover, in the said Example, although only the end of a metal thin plate is being fixed to a metal fitting or a receiving metal fitting, the aspect which fixes the metal thin plate which concerns on this invention to a metal fitting or a metal fitting can be changed suitably.

1, 1a to 1c Brace upper mounting bracket 2, 2a Bracket 3, 3a, 3b Bracket 4, 4a Metal thin plate 10, 10a Folding portion 11, 11a Rotating holding portion 12 Pressure receiving surface 13 Holding gap 14 Shaft hole 15 Guide groove Hole 16 Locking claw 18, 18a Side plate 20, 20a Metal fitting body 21 Rotating shaft 23 Flat plate part 26 Brace fixing part 33 Pressing edge part 34 Non-pressing edge part d Suspension bolt f Brace

Claims (3)

A brace upper mounting bracket for connecting the upper end of the brace to a suspension bolt,
A metal fitting having a brace fixing portion for fixing the upper end portion of the brace;
A folded portion provided with a pressure receiving surface having a substantially arc shape in plan view that comes into contact with the suspension bolt on the inner side surface, and a rotation holding portion that rotatably holds the pressing bracket around a horizontal rotation axis. And a receiving bracket comprising
On the periphery of the metal fittings,
A pressing edge having a substantially arc shape with the rotation axis as a center;
The length from the rotation shaft is shorter than the pressing edge, and a non-pressing edge formed on at least one side of the pressing edge is formed,
In a state where the suspension bolt is arranged between the folded portion of the receiving bracket and the pressing bracket,
When the pressing bracket is rotated at an angle at which the pressing edge is the height of the pivot shaft, the suspension bolt is sandwiched between the pressing edge of the pressing bracket and the pressure receiving surface of the receiving bracket, and the receiving bracket is attached to the suspension bolt. It becomes a fixed state where it cannot move up and down
When the pressing bracket is rotated at an angle at which the non-pressing edge is the height of the rotation shaft, the suspension bolt is not clamped between the pressing bracket and the receiving bracket, and the holding bracket can be moved up and down with respect to the lifting bolt. Configured to be in a state,
The brace upper mounting bracket further comprising a flexible thin metal plate interposed between the pressing edge and the suspension bolt in the fixed state.   The brace upper mounting bracket according to claim 1, wherein the metal thin plate is made of a metal material harder than a pressing edge portion of the pressing bracket. The pressing bracket includes a pair of flat plate portions disposed to face each other at an interval, and the pressing edge portion is configured by side edges of the pair of flat plate portions,
The said thin metal plate is interposed between the side edge of a pair of flat plate part which comprises a press edge part, and a suspension bolt in the said fixed state, The Claim 1 or Claim 2 characterized by the above-mentioned. Brace upper mounting bracket.

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