JP6230304B2 - 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. 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 (for example, Patent Document 1).

  Conventionally, as a brace upper mounting bracket for connecting the upper end portion of a brace to a suspension bolt, a plurality of products having different fixing structures for the suspension bolt have been proposed (for example, Patent Documents 2 to 4).

  For example, the brace upper mounting bracket of Patent Document 2 is configured to be fixed at a predetermined height of the suspension bolt by fastening two metal plates sandwiching the suspension bolt with screws. Further, the brace upper mounting bracket of Patent Document 3 is configured to be fixed at a predetermined height of the suspension bolt by locking the four claw portions to the outer peripheral portion of the suspension bolt. Further, the brace upper mounting bracket of Patent Document 4 is a state where two bolts are hooked on one side of a suspension bolt, and a bolt part attached to the tip of the brace is screwed from the other side to lock the brace. By sandwiching the suspension bolt between the piece and the bolt portion, the suspension bolt can be fixed to a predetermined height.

JP 2012-1954 A Design Registration No. 1146682 JP 2008-111292 A JP 2011-52481 A

  Incidentally, since the brace upper mounting bracket of Patent Document 2 has a structure in which two metal plates are fastened with screws and fixed to the suspension bolt, an operator is required to fix the brace upper mounting bracket to the upper portion of the suspension bolt. However, there is a problem that the bracing connection work is complicated because it is necessary to perform the fastening work by climbing up to the upper part of the suspension bolt.

  On the other hand, if the brace upper mounting bracket of Patent Document 3 is fixed to the brace upper mounting bracket before being fixed to the suspension bolt, the work can be performed by holding the lower portion of the long brace, The operator can fix the brace upper mounting bracket to the suspension bolt without going up to the upper portion of the suspension bolt. However, such a brace upper mounting bracket has a problem that when a heavy load is applied, the engagement between the claw portion and the suspension bolt is easily released, and the connection strength is inferior to other brace upper mounting brackets.

  In addition, the brace upper mounting bracket of Patent Document 4 can also be operated by holding the lower part of the long brace without moving up to the upper part of the suspension bolt if the brace is fixed to the brace upper mounting bracket first. The brace upper mounting bracket can be fixed to the suspension bolt. However, since the brace upper mounting bracket is configured to screw the bolt portion and clamp the suspension bolt, it is difficult to understand an appropriate torque for properly sandwiching the suspension bolt, and the suspension bolt is not sufficiently fixed. There is a risk of damaging the suspension bolts and metal fittings.

  The present invention has been made in view of the present situation, and an object of the present invention is to provide a brace upper mounting bracket that can easily connect braces and can appropriately connect the upper end of the brace to a suspension bolt.

The present invention is a brace upper mounting bracket for connecting an upper end portion of a brace to a suspension bolt , and includes a pair of side plate portions that are formed with folded portions on one side and are opposed to each other in the horizontal direction with a gap therebetween. Between the pair of side plate portions, a rotating portion that is rotatably held around a horizontal rotating shaft, and an upper end portion of the brace extending from the rotating portion to one side. And a bracket having a brace fixing portion to be fixed, and the bracket has a pressure receiving surface that comes into contact with the suspension bolt on the inner side of the folded portion, and on the other side of the rotating portion of the bracket. The peripheral edge portion is formed with a pressing edge portion and a non-pressing edge portion formed on at least one side of the pressing edge portion, and a suspension bolt is internally fitted between the pair of side plate portions, In a state where the suspension bolt is disposed between the folded portion of the metal fitting and the pressing metal, the pressing edge portion is When the bracket is rotated at an angle that corresponds to the height of the shaft, the suspension bolt is clamped by the pressing edge of the bracket and the pressure-receiving surface of the bracket, so that the bracket cannot be moved up and down with respect to the suspension bolt. When the pressing bracket is rotated at an angle where the non-pressing edge is the height of the rotation shaft, the hanging bolt is not clamped between the pressing bracket and the receiving bracket, and the receiving bracket can move up and down with respect to the hanging bolt. It is comprised so that it may become the fixed release state which becomes the brace upper mounting bracket characterized by the above-mentioned.

  In such a configuration, in a state where the brace upper mounting bracket is externally fitted to the suspension bolt, the brace upper mounting bracket can be moved up and down along the suspension bolt by rotating the pressing bracket, It can be converted into a fixed state that cannot be moved up and down. Here, since the upper end portion of the brace is fixed to the pressing metal, the pressing metal can be rotated by rotating the brace fixed to the pressing metal without being directly rotated. Therefore, in the present invention, first, the brace upper mounting bracket is externally fitted to the lower part of the suspension bolt, and then the brace upper mounting bracket is raised along the suspension bolt by holding the brace, and the brace upper mounting bracket is When the brace is rotated to the desired height and the brace upper mounting bracket is fixed, the brace upper mounting bracket is fixed at the predetermined height of the suspension bolt and the upper end of the brace is brazed. Can be connected to the required height.

  Thus, in the brace upper mounting bracket of the present invention, the work of raising the brace upper mounting bracket to the upper part of the suspension bolt or fixing the brace upper mounting bracket to the upper part of the suspension bolt is fixed to the brace upper mounting bracket. Therefore, the operator can connect the upper end of the brace to the upper part of the suspension bolt without going up to the upper part of the suspension bolt.

  Further, the brace upper mounting bracket of the present invention is configured to be fixed to the suspension bolt by sandwiching the suspension bolt from both sides in a state of being surrounded from the four sides by the receiving bracket and the pressing bracket. There is an advantage that the upper end portion of the brace can be firmly connected to the suspension bolt as compared with the brace upper mounting bracket (see Patent Document 3) in which the claw portion is only hooked on the outer peripheral surface.

  In addition, the brace upper mounting bracket of the present invention can hold the suspension bolt with an appropriate force between the bracket and the receiving bracket as long as the bracket is rotated to an angle at which it is fixed. It will be stable. Therefore, in the present invention, the fixing strength with the suspension bolt does not become insufficient, and the force for clamping the suspension bolt is not so strong that the suspension bolt and the metal fitting are not damaged.

  As a specific configuration of the present invention, the pressing edge portion has a substantially arc shape centering on the rotation shaft, and the non-pressing edge portion is longer than the pressing edge portion from the rotation shaft. A configuration is proposed in which is set short.

  In such a configuration, the distance between the pressure-receiving surface of the metal fitting and the metal fitting is relatively narrow in a state where the pressing edge is at the height of the rotating shaft, and the non-pressing edge is the height of the rotating shaft. Therefore, the fixed state and the unlocked state can be realized with a relatively simple configuration. In such a configuration, in the fixed state where the substantially arc-shaped pressing edge is at the height of the rotation shaft, the distance between the pressure receiving surface and the pressing edge is substantially constant, so that the suspension bolt is clamped with a substantially constant force. There is an advantage that you can.

  Further, in the present invention, it is necessary to limit the fixing angle of the brace with respect to the brace fixing portion so that the brace has an appropriate angle with respect to the suspension bolt when the brace upper mounting bracket is in a fixed state. As a specific configuration, the brace fixing portion of the metal brace is configured to fix the upper end of the brace at a predetermined angle with respect to the metal fitting, and the longitudinal direction and the vertical direction of the brace fixed to the brace fixing portion. It is proposed that the lens is configured to be in the fixed state when the angle formed by becomes a predetermined angle range including 45 °. In the existing ceiling structure, in many cases, the brace is installed at an angle of 45 ° with respect to the suspension bolt, that is, at an angle of 45 ° with respect to the vertical direction. The metal fitting can be adapted to many ceiling structures.

  Further, in the present invention, the press fitting includes a pair of flat plate portions arranged to face each other with a gap therebetween, and the pressing edge portion is configured by the side edge of each flat plate portion. It is proposed that the side edge of each flat plate portion constituting the pressing edge presses the suspension bolt toward the pressure receiving surface.

  In such a configuration, since the suspension bolt is pressed at two locations by the pressing edge portion in the fixed state of the brace upper mounting bracket, the suspension bolt can be more stably held between the pressing edge portion and the pressure receiving surface. There is an advantage.

  In the present invention, the rotation shaft is disposed on the metal fitting, and each side plate portion of the metal fitting has a shaft hole for supporting the rotation shaft, and the shaft hole. And a guide groove hole that communicates with the peripheral edge of the side plate portion. The rotation shaft is inserted into the guide groove hole from the peripheral edge of the side plate portion, and is fitted into the shaft hole via the guide groove hole. It is proposed that it is configured to be able to.

  In such a configuration, the brace upper mounting bracket can be easily attached to the hanging bolt because the pressing bracket can be easily assembled to the receiving bracket in a state in which the bracket is externally fitted to the hanging bolt. .

  Further, in the present invention, the rotation shaft is disposed on the pressing metal, and each side plate portion of the receiving metal has a shaft hole for supporting the rotation shaft, and the rotation A rotary shaft temporary holding hole in which the shaft can be fitted, and a groove hole for communicating the shaft hole and the rotary shaft temporary holding hole are formed. The rotary shaft temporary holding hole is more than the shaft hole. It is formed at a position away from the pressure receiving surface, and is configured to be able to fit the turning shaft fitted in the turning shaft temporary holding hole into the shaft hole through the groove hole. Proposed.

  In such a configuration, in the state in which the rotation shaft is fitted in the rotation shaft temporary holding hole, the interval between the pressure receiving surface and the metal fitting is widened compared to the state in which the rotation shaft is fitted in the shaft hole. In this state, if the brace upper mounting bracket is raised along the suspension bolt, it is possible to raise the brace upper mounting bracket more smoothly than in a state where the rotation shaft is fitted in the shaft hole.

  Moreover, in this invention, it is proposed that the groove shape which fits with the thread formed in the outer peripheral surface of a suspension bolt in the said fixed state is formed in the pressure receiving surface of a metal fitting.

  In such a configuration, in the fixed state of the brace upper mounting bracket, the pressure receiving surface is fitted to the outer peripheral surface of the hanging bolt, so that the receiving bracket is firmly fixed in the vertical direction of the hanging bolt. On the other hand, the brace upper mounting bracket can be horizontally rotated around the suspension bolt by sliding the pressure receiving surface along the thread of the suspension bolt even in the fixed state. For this reason, according to this configuration, it is possible to adjust the position of the lower end portion of the brace by horizontally rotating the brace in a state where the upper end portion of the brace is connected to the predetermined height of the suspension bolt.

  Further, according to the present invention, the pair of brackets that engage the receiving bracket and the pressing bracket at a predetermined rotation angle of the pressing bracket that is in the unlocked state and lock the pressing bracket at the predetermined rotation angle. It is proposed that an engaging portion is provided.

  In such a configuration, the posture of the bracket and the brace fixed to the bracket can be stabilized by locking the bracket to the predetermined rotation angle. If the brace upper mounting bracket is raised along the suspension bolt in the locked state, the brace upper mounting bracket can be smoothly raised.

  As described above, according to the brace upper mounting bracket of the present invention, the upper end of the brace can be easily connected to the upper part of the suspension bolt without the operator climbing up to the upper part of the suspension bolt. Moreover, in this brace upper mounting bracket, the fixing strength with the suspension bolt is stable and sufficiently high. Therefore, according to this invention, the outstanding brace upper mounting bracket which has all the advantages of the conventional brace upper mounting bracket is realizable.

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). It is a side view which shows the (a) fixed state of the brace upper mounting bracket 1, and the (b) fixed release state. It is a top view which shows the (a) fixed state of the brace upper mounting bracket 1, and the (b) 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. It is a side view of the brace upper mounting metal fitting 1a of Example 2, (a) shows the state which assembled | attached the receiving metal fitting 2a and the metal fitting 3, and (b) shows the state which isolate | separated the metal fitting 2a and the metal fitting 3 . It is a center vertical side view of the metal fitting 2a which concerns on Example 2. 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 attachment metal fitting 1a of Example 2. FIG. It is a side view of the brace upper mounting metal fitting 1b of Example 3, (a) shows the state which assembled | attached the metal fitting 2b and the metal fitting 3a, (b) shows the state which isolate | separated the metal fitting 2b and the metal fitting 3a. . 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 1b of Example 3. FIG.

  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. It is comprised with the pressing metal 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 folded portion 10 that is bent in a substantially U shape in a plan view, and the folded portion. 10 and a pair of side plate portions 11 arranged to face each other in the horizontal direction.

  As shown in FIG. 4, the folded portion 10 has a semi-cylindrical shape, and its inner peripheral surface is 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 substantially equal to the outer diameter of the suspension bolt d, and the pressure receiving surface 12 is a female screw shape that can be fitted with a male screw formed on the outer peripheral surface of the suspension bolt d. The groove shape is formed.

  As shown in FIG. 4, the side plate portions 11 and 11 are flat plate portions extending in the horizontal direction from the respective end edges of the folded portion 10. The both side plate portions 11 and 11 are arranged to face each other with a gap in the horizontal direction, and a holding gap 13 is formed between the side plate portions 11 and 11 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. Further, the side plate portions 11, 11 are provided with shaft holes 14 for pivotally supporting the metal fitting 3 in a direction perpendicular to the side plate portions 11. Further, the both side plate portions 11 are formed with guide groove holes 15 for communicating the shaft holes 14 with the lower edges of the side plate portions 11. The guide groove 15 is a groove having substantially the same width 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 portion via the guide groove 15. 11 is configured to be fitted into the shaft hole 14 from the lower edge.

  In addition, a pair of locking claws 16, 16 that protrude slightly inward are formed in the vicinity of the folded-back portion 10 at the upper edges of the side plate portions 11, 11. 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 body 20 is formed by folding a metal plate piece into a substantially U-shaped cross section at a central portion, and arranging a pair of folded flat plate portions 23 and 23 in parallel so that both plate surfaces are horizontally opposed. It will be. 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 is formed at both ends of the rotating shaft 21 that passes through both flat plate portions 23 and protrudes to the outside of both flat plate portions 23. It is composed of heads 32 and 32.

  The brace fixing part 26 extends from the peripheral part of the rotating part 25 as described above. In addition, a pressing edge 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.

  As shown in FIGS. 6A and 7A, the brace upper mounting bracket 1 is in a state in which the receiving bracket 2 and the pressing bracket 3 are assembled and attached to the suspension bolt d. When the pressing bracket 3 is rotated so that the pressing edge 33 is positioned at a height, the brace upper mounting bracket 1 is in a fixed state in which the receiving bracket 2 cannot move up and down with respect to the suspension bolt d. 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 is in close contact with the pressure receiving surface 12, the bracket 2 cannot be moved 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.

  In contrast, as shown in FIGS. 6B and 7B, the non-pressing edge 34 is positioned 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 °. Then, as shown in FIG. 8, when the angle between the longitudinal direction of the brace f and the vertical direction is 30 ° to 60 °, the pressing edge portion 33 is positioned at the same height as the rotating portion 25. When the brace upper mounting bracket 1 is in a fixed state and 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 the height of the rotating shaft 21. The brace upper mounting bracket 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.

  In the fixed state of the brace upper mounting bracket 1, the pressing bracket 3 is pressed against the suspension bolt d, so that the pressing bracket 3 is relatively difficult to rotate. However, the brace f fixed to the pressing bracket 3 is not attached to the pressing bracket 3. Is operated in the direction of rotating, the metal fitting 3 can be easily rotated by lever action even in the fixed state.

  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 pressing metal 3. Next, as shown in FIG. 9A, 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. 9B, 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 metal fitting 3 can be fitted into the shaft hole 14 from the lower edge of the side plate portion 11 through the guide groove hole 15.

  When 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 mounting bracket 1 is released from the fixed state, and the brace f is lifted upward while maintaining the 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. 10 (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, the brace upper mounting bracket 1 can be rotated horizontally around the suspension bolt d even in the fixed state, and the pressing bracket 3 can be rotated around the rotation shaft 21. The brace fixed to the ceiling support frame a by adjusting the position of the lower end of the brace f by tilting the brace f up and down or horizontally rotating around the vicinity of the upper end of the brace f. Screw onto the lower mounting bracket g.

  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.

  In addition, the brace upper mounting bracket 1 of the present embodiment is configured to fix the suspension bolt d to a predetermined height by sandwiching the suspension bolt d from both sides by the support bracket 2 and the pressing bracket 3, so that the upper end of the brace f is fixed. There is an advantage that the portion can be connected to the suspension bolt d relatively firmly.

  In particular, in this embodiment, as shown in FIG. 7A, the pressing edge 33 is formed by the side edges of the two flat plate portions 23, and in the fixed state, each flat plate forming the pressing edge portion 33. Since the side edge of the portion 23 is configured to press the suspension bolt d against the pressure receiving surface 12 from two locations, there is an advantage that the suspension bolt d can be stably held by the pressing edge portion 33 and the pressure receiving surface 12.

  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. There is an advantage that the interval between the edge portions 33 becomes constant, and the suspension bolt d can be held between the pressure receiving surface 12 and the pressing edge portion 33 with a constant force.

  Further, in this embodiment, the suspension bolt d is held between the pressing edge 33 and the pressure receiving surface 12 with an appropriate force by rotating the pressing metal 3 to fix the brace upper mounting metal 1. Therefore, there is an advantage that the brace upper mounting bracket 1 can be always fixed to the suspension bolt d with appropriate strength.

  Further, in the present embodiment, the rotation shaft 21 of the presser fitting 3 can be fitted into the shaft hole 14 from the lower edge of the side plate portion 11 through the guide groove hole 15 formed in the side plate portion 11. Therefore, there is an advantage that the brace upper mounting bracket 1 can be easily attached to the suspension bolt d without performing a screw fastening operation or the like.

  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 metal fitting 2 according to 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. .

  As shown in FIGS. 11 and 12, the catch 2a of the present embodiment has a locking claw 16a formed on the lower edge side of the side plate portion 11, and when the catch 2a is externally fitted to the suspension bolt d, the catch The lower edge side of 2a is configured to be locked to the suspension bolt d.

  Further, as shown in FIG. 12, in this embodiment, the pressure receiving surface 12a of the metal fitting 2a is formed with a groove shape on the female screw only at the upper part, and the remaining portion of the pressure receiving surface 12a is a smooth surface. Yes. The groove shape of the pressure receiving surface according to the present invention may be formed only in part as in this embodiment.

  In this embodiment, the rotary shaft 21 can be temporarily fitted and held by cutting out a middle portion of the guide groove 15 that communicates the shaft hole 14 and the lower edge of the side plate portion 11. A rotary shaft temporary holding hole 17 is formed. The rotary shaft temporary holding hole 17 is formed at a position farther from the pressure receiving surface 12a than the shaft hole 14, and in the state where the rotary shaft 21 is fitted in the rotary shaft temporary holding hole 17, the rotary shaft Compared to the state in which 21 is fitted in the shaft hole 14, the distance between the pressure receiving surface 12 a and the metal fitting 3 is widened. In this manner, in the state where the rotation shaft 21 is fitted in the rotation shaft temporary holding hole 17, the pressing metal 3 is rotated at an angle at which the pressing edge 33 is positioned at the height of the rotation shaft 21. Even in such a case, the suspension bolt d is not clamped by the bracket 2a and the pressing bracket 3, so that the bracket 2a can be moved up and down along the suspension bolt d regardless of the angle between the longitudinal direction of the brace f and the vertical direction. It is configured.

  As shown in FIG. 10A, the brace upper mounting bracket 1 of the first embodiment is raised along the suspension bolt d with the rotating shaft 21 fitted in the shaft hole 14 of the receiving bracket 2. . On the other hand, the brace upper mounting bracket 1a of the present embodiment is attached to the suspension bolt d with the rotating shaft 21 fitted in the rotating shaft temporary holding hole 17 as shown in FIG. It can also be raised along. When the rotary shaft 21 is raised while being fitted in the rotary shaft temporary holding hole 17, the distance between the pressure receiving surface 12 a and the metal fitting 3 is larger than that when the rotary shaft 21 is raised by being fitted inside the shaft hole 14. Due to the widening, the receiving bracket 2a and the pressing bracket 3 are less likely to come into contact with the suspension bolt d, and there is an advantage that the brace upper mounting bracket 1a can be raised smoothly. In addition, the brace upper mounting bracket 1a can be raised regardless of the angle between the longitudinal direction of the brace f and the vertical direction, so that the brace upper mounting can be performed without paying attention to the rotation angle of the pressing bracket 3 and the brace f. There is also an advantage that the metal fitting 1a can be pushed up to the upper part of the suspension bolt d.

  Further, in the brace upper mounting bracket 1a of the present embodiment, since the locking claw 16a is formed on the lower edge side of the side plate portion 11, the pressing bracket 3 is lifted as shown in FIG. Is lifted along the suspension bolt d, the metal fitting 2a is tilted so as to separate the pressure receiving surface 12a from the suspension bolt d around the vicinity of the locking claw 16a. Thus, according to such a configuration, when the metal fitting 2a is raised along the suspension bolt d, the pressure-receiving surface 12a is separated from the suspension bolt d and hardly rubs against the outer peripheral surface of the suspension bolt d. There is an advantage that 2a can be raised more smoothly along the suspension bolt d.

  As shown in FIG. 13 (a), when the brace upper mounting bracket 1a is raised to a desired height of the suspension bolt d with the pivot shaft 21 fitted in the pivot shaft temporary holding hole 17, As shown in FIG. 13B, by operating the brace f, the rotating shaft 21 is dropped from the rotating shaft temporary holding hole 17, and the rotating shaft 21 is moved along the guide groove hole 15 to the shaft hole 14. It is moved and fitted in the shaft hole 14. That is, the groove that communicates the shaft hole and the rotary shaft temporary holding hole according to the present invention is constituted by the guide groove 15. Then, after the rotational shaft 21 is fitted in the shaft hole 14, the brace f can be operated to rotate at an angle of 30 ° to 60 ° with respect to the vertical direction as in the first embodiment. The upper mounting bracket 1a is in a fixed state, and the connection of the upper end of the brace f to the suspension bolt d is completed.

  In the present embodiment, the configurations of the metal fitting 2 and the metal fitting 3 are partially changed from those of the first embodiment. In the following description, only portions different from those in the first and second embodiments will be described, and components common to the first and second embodiments are denoted by common reference numerals in the text and the drawings. Therefore, the description is omitted.

  In the brace upper mounting bracket 1b of the present embodiment, a boss-like engaging projection 35 protruding outward is formed on the flat plate portion 23 of the pressing bracket 3a, and the engaging projection is formed on the side plate portion 11 of the receiving bracket 2b. A circular hole-shaped engagement hole 18 that can be fitted with the hole 35 is provided. In this embodiment, as shown in FIG. 15 (a), when the brace 3a is rotated so that the brace f fixed to the pusher 3a is about 80 ° with respect to the vertical direction. The engagement protrusion 35 and the engagement hole 18 are configured to overlap and fit in the direction of the rotation shaft 21. In this fitting state, the engagement protrusion 35 and the engagement hole 18 are engaged in the rotation direction of the metal fitting 3a, so that the rotation of the metal fitting 3a relative to the metal fitting 2b is restricted. Unless the engagement protrusion 35 is removed from the engagement hole 18 by applying a torque of a certain level or more to 3a, the metal brace 3a cannot be rotated. That is, in the present embodiment, the engagement hole 18 and the engagement protrusion 35 constitute a pair of engagement portions according to the present invention.

  As described above, the brace upper mounting bracket 1b of the present embodiment is such that when the angle between the longitudinal direction of the brace f and the vertical direction is about 80 °, the pressing bracket 3a is It is locked at the rotation angle. And by restricting the rotation of the metal fitting 3a in this way, the posture of the brace f fixed to the metal fitting 3a becomes stable. Here, since the rotation angle at which the presser fitting 3a is locked is the rotation angle at which the brace upper mounting bracket 1b is in the unlocked state, in this embodiment, as shown in FIG. When the upper mounting bracket 1b is lifted along the suspension bolt d, the brace upper mounting bracket 1b can be suspended in a state where the brace f is held in a stable posture if the pressing bracket 3a is locked at the rotation angle. It can be smoothly raised along the bolt d.

  Then, as shown in FIG. 15A, after the brace upper mounting bracket 1a is raised to a desired height of the suspension bolt d in a state where the rotation of the pressing bracket 3a is restricted, as shown in FIG. As described above, if the brace f is rotated so as to be at an angle of 30 ° to 60 ° with respect to the vertical direction against the rotation restriction by the engaging protrusion 35 and the engaging hole portion 18, the brace upper portion is attached. The bracket 1a is in a fixed state, and the connection of the upper end of the brace f to the suspension bolt d is completed.

  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, 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.

  Further, in the above-described embodiment, the metal fitting 3 is rotatably held by the metal fitting 2 by fitting the rotation shaft provided in the metal fitting 3 into the shaft hole formed in the metal fitting 2. However, instead of such a configuration, a rotation shaft may be formed on the metal fitting side, and a shaft hole may be formed on the metal fitting side.

1, 1a, 1b Brace upper mounting bracket 2, 2a, 2b Receiving bracket 3, 3a Press bracket 10 Folded portion 11 Side plate portion 12, 12a Pressure receiving surface 13 Holding gap 14 Shaft hole 15 Guide groove hole (groove hole)
16, 16a Locking claw 17 Rotating shaft temporary holding hole 18 Engagement hole (engagement part)
DESCRIPTION OF SYMBOLS 20 Metal fitting body 21 Rotating shaft 22 Pin 23 Flat plate part 25 Rotating part 26 Brace fixing part 28 Screw insertion hole 31 Pin insertion hole 32 Head 33 Pressing edge part 34 Non-pressing edge part 35 Engaging protrusion (engaging part) )
a Ceiling support frame b Ceiling panel c Ceiling slab d Hanging bolt e Hanger f Brace g Brace lower fixing bracket h Tapping screw

Claims (4)

A brace upper mounting bracket for connecting the upper end of the brace to a suspension bolt,
A receiving metal fitting having a pair of side plate portions formed with a folded portion on one side and arranged to be opposed to each other in the horizontal direction at an interval;
Between the pair of side plate portions, a rotating portion that is rotatably held around a horizontal rotation axis, and a brace fixing portion that fixes an upper end portion of the brace extending from the rotating portion to one side. And a metal fitting comprising
The receiving bracket includes a pressure receiving surface that comes into contact with the suspension bolt on the inner side of the folded portion,
On the peripheral edge located on the other side of the rotating portion of the metal fitting, a pressing edge and a non-pressing edge formed on at least one side of the pressing edge are formed.
In a state where the suspension bolt is fitted between the pair of side plate portions and the suspension bolt is disposed between the folded portion of the metal fitting and the press fitting,
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 receiving bracket can be moved up and down with respect to the suspension bolt. Configured to be in the unlocked state ,
Furthermore, the metal fitting is provided with a pair of flat plate portions arranged to face each other with an interval, and the pressing edge portion is constituted by a side edge of each flat plate portion,
In the fixed state, the side edge of each flat plate portion constituting the pressing edge portion presses the suspension bolt toward the pressure receiving surface side . The pivot shaft is disposed on a metal fitting;
Each side plate portion of the metal fitting is formed with a shaft hole for pivotally supporting the rotating shaft, and a guide groove hole for communicating the shaft hole with the peripheral edge of the side plate portion,
2. The brace according to claim 1 , wherein the pivot shaft is configured to be inserted into a guide groove hole from a peripheral edge of the side plate portion and to be fitted into the shaft hole through the guide groove hole. Upper mounting bracket. The pivot shaft is disposed on a metal fitting;
A shaft hole for pivotally supporting the rotation shaft, a rotation shaft temporary holding hole in which the rotation shaft can be fitted, and the shaft hole and the rotation shaft temporary holding hole are formed in each side plate portion of the metal fitting. And a slot that communicates with the
The rotating shaft temporary holding hole is formed at a position farther from the pressure receiving surface than the shaft hole,
3. The structure according to claim 1 , wherein the rotation shaft fitted into the rotation shaft temporary holding hole can be fitted into the shaft hole via the groove hole. Brace upper mounting bracket. A pair of engaging portions are provided for engaging the receiving bracket and the pressing bracket with each other at a predetermined rotation angle of the fixing bracket in the unlocked state and locking the pressing bracket at the predetermined rotation angle. The brace upper mounting bracket according to any one of claims 1 to 3 , wherein:

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