JP7452858B2 - Brace connection fittings - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brace connecting fitting that connects a brace bolt serving as a diagonal reinforcing member to a hanging bolt.

Conventionally, in structures where suspension bolts hanging from a ceiling structure such as a ceiling slab support ceiling-hanging objects such as air conditioners, brace bolts that serve as diagonal reinforcing materials are connected to positions near the top and bottom ends of the suspension bolts. This is used to suppress vibrations during earthquakes. BACKGROUND ART As this type of brace connecting metal fitting, the one disclosed in Patent Document 1, for example, is known.

This conventional brace connection fitting has an L-shaped first fitting and an L-shaped second fitting arranged inside the first fitting, and the first fitting is located at a corner portion of the overall L-shape. The hanging bolt is inserted and held between the metal fitting and the second metal fitting. The brace connecting fitting is provided with a fixing member for fixing the brace bolt on the outside of the pair of extending portions extending perpendicularly to each other from the corner portion of the first fitting, and a fixing member for fixing the brace bolt is provided between the pair of extending portions and the fixing member. Insert the brace bolt to secure it. Specifically, a pair of bolts are attached to both ends of the fixing member, and by tightening the pair of bolts, the brace bolt can be inserted and fixed between the fixing member and the extension part. .

Patent No. 6635491

However, when attempting to attach the above-mentioned conventional brace connecting fitting to a hanging bolt, the bolt that interconnects the first fitting and the second fitting is once removed, and the first fitting and the second fitting are connected to each other. It is necessary to attach the suspension bolt and then reattach the bolt to connect and fix the first metal fitting and the second metal fitting to each other. Therefore, it takes time to remove the bolt connecting the first metal fitting and the second metal fitting, and to refit the bolt into the screw hole, resulting in a problem of poor work efficiency.

Further, in the conventional brace connecting metal fitting, when connecting two brace bolts to a hanging bolt, it is necessary to tighten the bolts provided at a total of six locations. For example, when the ceiling hanging object is an air conditioner, hanging bolts are attached to the four corners of the air conditioner, and two brace bolts are placed between two adjacent hanging bolts. Therefore, a total of eight brace connections are used in the structure that supports one air conditioner. In this case, if it is necessary to tighten bolts in 6 places to install one brace connection fitting, a total of 48 bolts need to be tightened in the structure that supports one air conditioner, which increases work efficiency. There is also the problem of a decrease in

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a brace connecting metal fitting that can be installed more efficiently than before.

In order to achieve the above object, firstly, the present invention provides a brace connection fitting that connects a brace bolt to a suspension bolt, the first holding portion being curved along the outer peripheral surface of the suspension bolt; a pair of first extension parts extending from the first holding part in directions substantially perpendicular to each other in order to connect the brace bolt, and a bolt is inserted into each of the pair of first extension parts. a first metal fitting having a hole formed therein; a fastening bolt whose shaft portion is inserted into the bolt insertion hole and a nut is preliminarily attached to the tip of the shaft portion; a second holding part curved along the outer peripheral surface of the hanging bolt; and a pair of holding parts extending from the second holding part in directions substantially perpendicular to each other and arranged parallel to the pair of first extending parts. a second metal fitting having a second extending portion, and a second metal fitting having a U-shaped notch vertically formed in each of the pair of second extending portions, wherein the fastening bolt and the nut are connected to each other. When in the unfastened state, the second metal fitting is slid in the vertical direction outside the pair of first extending portions of the first metal fitting to move the shaft portion of the fastening bolt forward and backward with respect to the notch. This configuration is characterized in that the second metal fitting is detachable from the outside of the first metal fitting.

Secondly, in the brace coupling fitting having the first configuration, the fastening bolt and the nut are connected in a state where the hanging bolt is sandwiched between the first holding part and the second holding part. This configuration is characterized in that the first metal fitting and the second metal fitting are fixed to the suspension bolt by being fastened.

Thirdly, in the brace connection fitting having the first or second configuration, the second fitting is arranged on the outside of the pair of first extending portions of the first fitting. This configuration is characterized in that it has a protrusion that restricts the vertical sliding of the second metal fitting when it is attached to the second metal fitting.

Fourthly, the present invention provides a brace connecting fitting having any one of the first to third configurations, wherein the first fitting has a plurality of bolt insertion holes in each of the pair of first extending portions. The fastening bolt is inserted into each of the plurality of bolt insertion holes in an unfastened state in advance, and the second metal fitting protrudes outside of the pair of first extending portions of the first metal fitting. This configuration is characterized in that at least one of the notches is formed at a position corresponding to the shaft of the fastening bolt.

Fifth, the present invention provides a brace connecting fitting having any of the first to fourth configurations, wherein the brace connecting fitting is arranged outside the pair of first extending portions of the first fitting, and the brace bolt is connected to the brace connecting fitting. The brace connecting member is held by the fastening bolt, and when the fastening bolt and the nut are fastened, the brace connecting member is held by the fastening bolt, and the fastening bolt and the nut are fastened. This configuration is characterized in that the brace bolt is fixed between the brace bolt and the first extending portion.

Sixthly, the present invention provides a brace connecting fitting having the fifth configuration, which is attached to the shaft portion of the fastening bolt between the first extending portion and the brace connecting member, and wherein the first extending portion is attached to the shaft portion of the fastening bolt. and a washer disposed between the biasing member and the first extending portion; is a configuration characterized in that it is inserted between the first extending portion and the washer.

According to the brace connecting fitting of the present invention, it is possible to attach it to a hanging bolt without removing the bolt, so that the attachment work can be performed more efficiently than before.

It is a perspective view showing a brace connection fitting in a 1st embodiment. It is a perspective view of the state where each constituent member of the brace connection fitting in a 1st embodiment was disassembled, seen from the front side (outside). It is a perspective view of the state where each constituent member of the brace connection metal fitting in a 1st embodiment was disassembled, seen from the back side (inside). It is a figure which shows an example of the installation aspect of a brace connection fitting. It is a figure which shows the procedure of removing a 2nd metal fitting from a 1st metal fitting in the brace connection metal fitting of 1st Embodiment. It is a figure which shows the procedure which attaches the brace connection metal fitting of 1st Embodiment to a hanging bolt. It is a perspective view showing an example where a brace bolt is attached to a brace connection fitting. It is a side view which shows the example which attaches a brace bolt between a 1st extension part and a brace connection member. FIG. 7 is a cross-sectional view showing the displacement of the brace connecting member when fixing the brace bolt. It is a figure which shows the modification of a washer. It is a figure which shows the state where the washer was attached to the 1st metal fitting. It is a figure which shows the modification of the protrusion part formed in a 1st metal fitting. It is a perspective view which shows the brace connection metal fitting in 2nd Embodiment. It is a perspective view of the state where each constituent member of the 1st metal fitting of a brace connection metal fitting is disassembled and seen from the front side (outside). It is a figure which shows the procedure which attaches a brace connection metal fitting to a suspension bolt. It is a perspective view showing an example where a brace bolt is attached in a state where a brace connection fitting is temporarily fixed to a suspension bolt.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In each of the drawings referred to below, common members are given the same reference numerals, and overlapping explanations thereof will be omitted.

(First embodiment)
FIG. 1 is a perspective view showing a brace connecting fitting 1 according to a first embodiment of the present invention, (a) is a view of the brace connecting fitting 1 seen from the front side (outside), and (b) is a view of the brace connecting fitting 1. 1 as viewed from the back side (inside). FIG. 2 is an exploded perspective view of each component of the brace connection fitting 1 viewed from the front side (outside). FIG. 3 is an exploded perspective view of each component of the brace connecting fitting 1 viewed from the back side (inside). Furthermore, FIG. 4 is a side view showing an example of an installation mode of the brace connecting fitting 1. As shown in FIG.

First, as shown in FIG. 4, the brace connection fitting 1 of this embodiment includes a hanging bolt 110 hanging from a ceiling structure 100 such as a ceiling slab, and a brace bolt 120 disposed diagonally between the pair of hanging bolts 110. This is a metal fitting for connecting the two.

The hanging bolt 110 is a bolt that supports a ceiling hanging object 150 such as an air conditioner in a suspended state in a ceiling space. For example, four hanging bolts 110 are attached to the ceiling structure 100 so as to be connectable to connecting portions 151 provided at four corners of a ceiling hanging object 150. The four hanging bolts 110 are connected at their respective lower ends to connection parts 151 at the four corners of the ceiling hanging object 150, and support the ceiling hanging object 150 at a predetermined height position.

The brace bolt 120 is arranged diagonally between two of the four hanging bolts 110 that are adjacent to each other, and has an upper end connected to a position near the upper end of one of the hanging bolts 110, and a lower end. is connected to a position near the lower end of the other hanging bolt 110. The arrangement angle of the brace bolt 120 is adjusted as appropriate depending on the dimension from the ceiling structure 100 to the upper surface of the ceiling hanging object 150. For example, assuming that the horizontal line is 0°, if the dimension from the ceiling structure 100 to the top surface of the ceiling hanging object 150 becomes longer, the installation angle of the brace bolt 120 becomes larger; If the dimension to the top surface of the hanging object 150 becomes shorter, the arrangement angle of the brace bolt 120 becomes smaller. The brace connection fitting 1 has a structure that allows the brace bolts 120 disposed at various angles to be connected to the suspension bolts 110.

Two brace bolts 120 are arranged between the two suspension bolts 110 so as to cross each other. Therefore, the brace connection fitting 1 is attached to two locations at different heights, the upper and lower parts of one suspension bolt 110, and connects the brace bolt 120 to the suspension bolt 110 at each height position. In FIG. 4, the brace connecting fitting 1 attached to the lower part of the hanging bolt 110 is shown as a brace connecting fitting 1a, and the brace connecting fitting 1 attached to the upper part of the hanging bolt 110 is shown as a brace connecting fitting 1b. The brace connector 1a and the brace connector 1b have the same configuration and function, except that they are used upside down.

Next, the brace connecting fitting 1 will be explained. As shown in FIGS. 1, 2, and 3, the brace connection fitting 1 has an L-shape bent at an approximately right angle as a whole, and a hanging bolt 110 is attached to the corner bent at an approximately right angle. The brace bolt 120 is connected to portions extending in two directions at substantially right angles from each other. In the following, the approximately right-angled area between the corners of the L-shape of the brace connecting fitting 1 and extending in two directions will be referred to as the "inside" of the brace connecting fitting 1. The approximately 270 degree region on the opposite side is referred to as the "outside" of the brace connecting fitting 1.

The brace connecting fitting 1 includes a first fitting 2, a second fitting 3, a fastening bolt 4, a nut 5, a brace connecting member 6, a biasing member 7, and a washer 8. The first metal fitting 2 is a metal fitting bent into a substantially L shape as a whole. The second metal fitting 3 is also a metal fitting bent into a substantially L-shape as a whole. The second metal fitting 3 is arranged outside the bent portion of the first metal fitting 2. For example, the inner surface of the second metal fitting 3 is arranged so as to be joined to the outer surface of the first metal fitting 2. In the brace connecting fitting 1, the L-shaped bent corner portion is attached to a predetermined height position of the hanging bolt 110 in a state where the second fitting 3 is assembled to the first fitting 2.

The first metal fitting 2 extends from the first holding part 10 in directions substantially perpendicular to each other in order to connect the first holding part 10 curved along the outer peripheral surface of the hanging bolt 110 and the brace bolt 120. It is an L-shaped metal fitting having a pair of first extending portions 11, 11, and a bolt insertion hole 12 formed in each of the pair of first extending portions 11, 11.

The first holding portion 10 is formed at an L-shaped bent corner of the first metal fitting 2, and has a curved shape recessed toward the inside of a pair of first extending portions 11, 11 that are substantially perpendicular to each other. , the hanging bolt 110 is held in a state where the outer surface of the corner portion is joined to the outer peripheral surface of the hanging bolt 110. That is, the first holding part 10 is formed so that the outer circumferential surface of the hanging bolt 110 can be joined to the inner circumferential surface of the pair of first extending parts 11, 11, which is curved toward the inside and held. ing.

Further, as shown in FIG. 2, the first holding portion 10 has an engagement protrusion 14 on the inner circumferential surface side of the curved shape that engages with a male screw formed on the outer circumferential surface of the hanging bolt 110. For example, the engagement protrusion 14 moves from a predetermined location inside the pair of first extending portions 11, 11 (curved outer peripheral surface side) of the first holding portion 10 toward the outside (curved inner peripheral surface side). The curved inner circumferential surface is formed by protruding outward by pressing. The engagement protrusion 14 is formed as a linear protrusion that follows the curved shape of the first holding portion 10 . Further, the engagement protrusion 14 is inclined in the same direction as the helical inclination direction of the male screw formed on the outer peripheral surface of the suspension bolt 110, and is formed to engage with the thread groove of the suspension bolt 110. The first holding portion 10 is located at the center of the pair of first extending portions 11, 11, and both ends thereof are connected to the first extending portions 11, 11.

The pair of first extending portions 11, 11 are formed as flat plate portions extending substantially perpendicularly from the first holding portion 10. Each of the pair of first extending portions 11, 11 extending from the first holding portion 10 has the same length. Further, a bolt insertion hole 12 is formed in each of the pair of first extending portions 11, 11. For example, two bolt insertion holes 12, 12 are formed in one first extending portion 11. The two bolt insertion holes 12, 12 are formed at different height positions in the first extending portion 11, and at different distances from the first holding portion 10. Therefore, the two bolt insertion holes 12, 12 are located diagonally in the first extending portion 11. Further, the two bolt insertion holes 12, 12 are formed at positions separated from each other by a predetermined distance. Further, the two bolt insertion holes 12, 12 formed in each of the pair of first extending portions 11 are formed at positions that are symmetrical to each other with the first holding portion 10 in between. For example, as shown in FIG. 2, in each of the pair of first extending portions 11, one bolt insertion hole 12 is formed at a first height position relatively close to the first holding portion 10. Another bolt insertion hole 12 is formed at a second height position lower than the first height position near the tip, which is relatively far from the first holding part 10. The inner diameter of the bolt insertion hole 12 is formed to be larger than the outer diameter of the shaft portion 4b of the fastening bolt 4.

Further, as shown in FIG. 3, each of the pair of first extending portions 11, 11 is engaged with the head 4a of the fastening bolt 4 at a position near the bolt insertion holes 12, 12, and is engaged with the head 4a of the fastening bolt 4. A protrusion 24 is provided to restrict rotation. The protruding portion 24 is formed to protrude toward the inner side of the pair of first extending portions 11, 11. For example, the protruding portion 24 is formed by pressing the outer surface of the first extending portion 11 inward to cause the inner surface to protrude.

Furthermore, as shown in FIG. 2, each of the pair of first extending portions 11, 11 is formed with a projection portion 13 that protrudes toward the outside of the pair of first extending portions 11, 11. The protruding portion 13 is formed at a predetermined position near the lower end of the first extending portions 11, 11. For example, the protruding portion 13 is formed by pressing the inner surfaces of the pair of first extending portions 11, 11 outward, thereby causing the outer surfaces to protrude.

The positional relationship between the bolt insertion hole 12 and the projections 24 and 13 described above can be reversed by vertically reversing the first metal fitting 2.

The shaft portion 4b of the fastening bolt 4 is inserted into the bolt insertion hole 12. At this time, the head 4a of the fastening bolt 4 is placed inside the pair of first extending portions 11, 11, and the shaft portion 4b is inserted from the inside of the pair of first extending portions 11, 11 toward the outside. be done. That is, the fastening bolt 4 is inserted into the bolt insertion hole 12 with the tip of the shaft portion 4b protruding outside the first extending portion 11. Two bolt insertion holes 12, 12 are formed in one first extending portion 11, and the fastening bolt 4 is inserted into each of the two bolt insertion holes 12, 12. Therefore, the shaft portions 4b of the two fastening bolts 4 protrude outside one first extending portion 11. The positions at which the shaft portions 4b of these two fastening bolts 4 protrude are inclined in the diagonal direction in the first extension portion 11.

One brace connecting member 6 is arranged on the outside of the pair of first extending portions 11 . The brace connecting member 6 is arranged to face the outer surface of the first extending portion 11 and is attached to the shaft portions 4b of the two fastening bolts 4 that protrude outside the first extending portion 11. For example, the brace connecting member 6 is made of a rectangular flat metal member, and two holes 31 are formed at both ends thereof, through which the shaft portion 4b of the fastening bolt 4 is inserted. The inner diameter of these holes 31 is larger than the outer diameter of the shaft portion 4b of the fastening bolt 4. The brace connecting member 6 is configured such that the shaft portions 4b of the two fastening bolts 4 protruding outward from the first extension portion 11 are inserted into the holes 31 at both ends, and the nut 5 is attached to the tip of the shaft portion 4b of each fastening bolt 4. By being attached, it is held on the outside of the first extending portion 11 so as not to separate from the fastening bolt 4. Note that the nut 5 is attached in advance to the tip of the shaft portion 4b of the fastening bolt 4 in an unfastened state in which it is not tightly tightened to the shaft portion 4b.

Further, as shown in FIG. 3, the brace connecting member 6 has a plurality of protrusions 32 that protrude from a surface facing the outer surface of the first extending portion 11. These protrusions 32 are formed between two holes 31, 31 formed at both ends of the brace connecting member 6. For example, the protruding portion 32 can cause the surface corresponding to the first extending portion 11 to protrude toward the first extending portion 11 by pressing the outer surface of the brace connecting member 6 that does not face the first extending portion 11. It is formed in such a way that it This protrusion 32 engages with the outer peripheral surface (thread groove) of the brace bolt 120 when the brace bolt 120 is sandwiched between the brace connecting member 6 and the first extending portion 11, and prevents displacement of the brace bolt 120. It is for regulating purposes.

The biasing member 7 is composed of, for example, a coil spring. The biasing member 7 is attached to the shaft portion 4b of one of the two fastening bolts 4 holding the brace connecting member 6, and is disposed between the brace connecting member 6 and the first extension portion 11. be done. The biasing member 7 applies a biasing force to move the brace connecting member 6 away from the first extending portion 11 so that the distance between the brace connecting member 6 and the first extending portion 11 is equal to or greater than a predetermined distance.

The washer 8 is a member having a hole formed in the center of a disc-shaped metal plate through which the shaft portion 4b of the fastening bolt 4 can be inserted. is attached to the shaft portion 4b of the fastening bolt 4. Specifically, the washer 8 is mounted on the shaft portion 4b of the fastening bolt 4 while being disposed between the biasing member 7 and the first extending portion 11. As described above, the biasing member 7 exerts a biasing force so that the distance between the brace connecting member 6 and the first extending portion 11 becomes larger. 1 is held in a state joined to the outer surface of the extended portion 11.

The second metal fitting 3 includes a second holding part 20 that is curved along the outer circumferential surface of the hanging bolt 110, and a second holding part 20 that extends from the second holding part 20 in directions perpendicular to each other in order to be attached to the outside of the first metal fitting 2. The L-shaped metal fitting has a pair of second extending portions 21, 21, and a U-shaped notch 22 is formed in each of the pair of second extending portions 21, 21 along the vertical direction. It is.

The second holding portion 20 is formed at an L-shaped bent corner of the second metal fitting 3 and has a curved shape that follows the outer circumferential surface of the hanging bolt 110 . The suspension bolt 110 is held in a state where it is joined to the holder. The second holding part 20 is arranged to face the first holding part 10 of the first metal fitting 2, and holds the hanging bolt 110 by sandwiching it between the second holding part 10 and the first holding part 10 of the first metal fitting 2. The second holding portion 20 is located at the center of the pair of second extending portions 21, 21, and both ends thereof are connected to the second extending portions 21, 21.

The pair of second extending portions 21, 21 are formed as flat plate portions extending substantially perpendicularly from the second holding portion 20. The pair of second extending portions 21, 21 extending from the second holding portion 20 have the same length. The pair of second extending portions 21, 21 are arranged, for example, at positions close to the pair of first extending portions 11, 11 of the first metal fitting 2. Moreover, a notch 22 is formed in each of the pair of second extending portions 21, 21, which is cut out in the vertical direction from the upper end of the second extending portion 21 to a predetermined depth. This notch 22 has a width that can accommodate the shaft portion 4b of the fastening bolt 4 inserted into the bolt insertion hole 12 of the first metal fitting 2 inside thereof. The notch portion 22 is located close to the first holding portion 10 when the pair of second extending portions 21, 21 are arranged so as to be joined to the pair of first extending portions 11, 11 of the first metal fitting 2. It is formed at a position where the shaft portion 4b of the fastening bolt 4 in the position can be accommodated therein. Moreover, the notches 22 formed in each of the pair of second extending portions 21 are formed at positions that are symmetrical to each other with the second holding portion 20 in between.

Furthermore, an engaging portion 23 that engages with a protrusion 13 provided on the first metal fitting 2 is formed at the lower end of each of the pair of second extending portions 21 , 21 . For example, the engaging portion 23 is formed by cutting out the lower portion of the tip of the second extending portion 21, 21. This engaging portion 23 engages with the protrusion 13 when the second metal fitting 3 is attached to the outside of the first metal fitting 2, and serves to prevent the second metal fitting 3 from separating from the first metal fitting 2. It is something.

Note that the above-described positional relationship between the notch portion 22 and the engaging portion 23 can be reversed by vertically reversing the second metal fitting 3.

The second metal fitting 3 configured as described above is arranged outside the first metal fitting 2 as shown in FIG. 1(a). That is, the second metal fitting 3 is arranged on the outside of the first metal fitting 2 so that the pair of second extending portions 21, 21 are close to the pair of first extending portions 11, 11 of the first metal fitting 2. Ru. At this time, the second metal fitting 3 is in a state where both ends of the pair of second extending portions 21, 21 are inserted between the washer 8 and the pair of first extending portions 11, 11 of the first metal fitting 2, As shown in FIG. 1(a), the shaft portion 4b of the fastening bolt 4 is inserted inside the notch 22.

That is, when the second metal fitting 3 is attached to the outside of the first metal fitting 2, by sliding the second metal fitting 3 in the vertical direction with respect to the first metal fitting 2, both ends of the pair of second extending portions 21, 21 are attached to the washers. 8 and the first extending portions 11, 11. Since the biasing member 7 disposed on the outside of the pair of first extending portions 11 presses and biases the washer 8 toward the first extending portions 11, the second metal fitting 3 When both ends of the extensions 21, 21 are inserted between the washer 8 and the first extensions 11, 11, they are joined to the first metal fitting 2 by the biasing force of the biasing member 7. It is in a temporarily fixed state. In this temporarily fixed state, the protrusion 13 protruding outward of the first extending portion 11 is engaged with the engaging portions 23 formed at both ends of the second extending portion 21, so that the second metal fitting 3 is restricted from sliding in the vertical direction, and the second metal fitting 3 does not separate from the first metal fitting 2.

Such a brace connecting fitting 1 may be transported to the construction site with the first fitting 2 and the second fitting 3 separated, or the second fitting 2 may be placed outside the first fitting 2. 3 may be transported in a temporarily fixed state. For example, if the brace connecting fitting 1 is delivered to a construction site with the second fitting 3 temporarily attached to the outside of the first fitting 2, when attaching the brace connecting fitting 1 to the hanging bolt 110, first The metal fitting 3 is once removed from the first metal fitting 2. Thereafter, the hanging bolt 110 is attached to the outside of the first holding part 10 of the first metal fitting 2, and then the second metal fitting 3 is attached to the outside of the first metal fitting 2 again. At this time, the brace connection fitting 1 of this embodiment allows the second fitting 3 to be attached to and removed from the first fitting 2 by sliding the second fitting 3 vertically relative to the first fitting 2. Therefore, the second metal fitting 3 can be easily attached to and removed from the first metal fitting 2 without removing the fastening bolt 4 from the first metal fitting 2.

FIG. 5 is a diagram showing a procedure for removing the second metal fitting 3 from the first metal fitting 2. First, as shown in FIG. 5(a), when the second metal fitting 3 is temporarily attached to the outside of the first metal fitting 2, the second metal fitting 3 is connected to the washer 8 and the first extension metal fitting 1. It is in a state where it is sandwiched between the installation part 11. Furthermore, since the protrusion 13 formed on the first extension part 11 engages with the engagement part 23 formed on the second extension part 21, the second metal fitting 3 cannot be slid downward as it is. Can not. Therefore, when the second metal fitting 3 is temporarily attached to the first metal fitting 2 and the second metal fitting 3 is removed from the first metal fitting 2, the operator applies the biasing force as shown in FIG. 5(a). The lower part of the second metal fitting 3 is pushed up in the direction away from the first metal fitting 2 (in the direction of arrow F1) against the urging force of the member 7. For example, if the lower part 20a of the second holding part 20 of the second metal fitting 3 is separated from the first holding part 10 of the first metal fitting 2, the lower part of the pair of second extending parts 21, 21 will be It separates from the lower part of the extension parts 11, 11. As a result, the engagement state between the protrusion 13 and the engagement portion 23 can be released.

Then, with the lower part 20a of the second holding part 20 of the second metal fitting 3 separated from the first metal fitting 2, the operator moves the second metal fitting 3 downward (in the direction of arrow R2) as shown in FIG. 5(b). The second metal fitting 3 can be removed from the first metal fitting 2 by sliding it. That is, when removing the second metal fitting 3 from the first metal fitting 2, the operator can remove the second metal fitting 3 from the first metal fitting 2 with a one-touch operation without removing the fastening bolt 4 and nut 5. It is. Therefore, the second metal fitting 3 can be easily removed from the first metal fitting 2, and work efficiency is improved compared to the conventional method.

Next, FIG. 6 is a diagram showing a procedure for attaching the brace connecting fitting 1 to the hanging bolt 110. Incidentally, FIG. 6 shows the procedure for attaching the brace connecting fitting 1a, which is attached to the lower part of the hanging bolt 110, among the brace connecting fittings 1a and 1b shown in FIG. First, as shown in FIG. 6(a), the operator attaches the first metal fitting 2 from which the second metal fitting 3 has been removed to the hanging bolt 110. That is, the operator attaches the suspension bolt 110 so that the outer circumferential surface of the suspension bolt 110 is in contact with the outside (curved inner circumferential surface side) of the first holding part 10 of the first metal fitting 2 . Thereafter, the operator places the second metal fitting 3 at a position below the first metal fitting 2, and slides the second metal fitting 3 upward as shown by arrow F3 in FIG. 6(a). Then, as shown in FIG. 6(b), the operator inserts the tips 21a, 21a of the pair of second extending portions 21, 21 of the second metal fitting 3 between the washer 8 and the first extending portion 11. . At this time, since the tips 21a of the second extending portions 21, 21 come into contact with the protruding portion 13, the operator lifts the upper portion of the tip 21a of the second metal fitting 3 from the first extending portion 11, thereby removing the pair of second extending portions 21, 21. The extensions 21, 21 can be inserted between the washer 8 and the protrusion 13. Then, the operator slides the second metal fitting 3 further upward and inserts the second metal fitting 3 between the washer 8 and the first extending portion 11. At this time, the shaft portion 4b of the fastening bolt 4 enters inside the notch portion 22 formed in the second extension portion 21. When the second metal fitting 3 is inserted until the shaft portion 4b of the fastening bolt 4 reaches a position near the end of the notch 22, the state shown in FIG. It will be in a temporarily fixed state. At this time, the engaging portion 23 of the second metal fitting 3 engages with the protrusion 13 of the first metal fitting 2, and the second metal fitting 3 is prevented from separating from the first metal fitting 2.

In the temporarily fastened state shown in FIG. 6(c), since the biasing member 7 presses the second metal fitting 3 toward the first metal fitting 2 via the washer 8, the first holding part 10 of the first metal fitting 2 The hanging bolt 110 is sandwiched between the second holding part 20 of the two metal fittings 3. Therefore, the brace connecting fitting 1 is temporarily fixed at a predetermined height position of the hanging bolt 110. In this temporarily fixed state, the engagement protrusion 14 formed on the outside of the first holding part 10 engages with the threaded groove formed on the outer peripheral surface of the hanging bolt 110, so the brace connecting fitting 1 moves in the vertical direction. Positioned so that there is no need to do anything.

In this way, the brace connecting fitting 1 of the present embodiment is configured such that the second fitting 3 can be slid in the vertical direction while the fastening bolt 4 and the nut 5 are not tightly tightened. It is possible to easily perform operations such as removing the metal fitting 3 from the first metal fitting 2 and attaching the second metal fitting 3 to the first metal fitting 2.

In the temporarily fastened state shown in FIG. 6(c), since the fastening bolt 4 and nut 5 are not fastened, the biasing force of the biasing member 7 causes the space between the brace connecting member 6 and the first extension portion 11 to It's wide open. Therefore, the operator can easily insert the brace bolt 120 between the brace connecting member 6 and the first extending portion 11 in the temporarily fixed state.

FIG. 7 is a perspective view showing an example in which the brace bolt 120 is attached with the brace connecting fitting 1 temporarily fastened to the hanging bolt 110, and shows a state in which the outside of the brace connecting fitting 1 is viewed diagonally from below. There is. Note that, similarly to FIG. 6, FIG. 7 also illustrates the brace connection fitting 1a attached to the lower part of the hanging bolt 110. When the brace connecting fitting 1 is temporarily fixed to the hanging bolt 110, the brace connecting member 6 is positioned at a predetermined height position of the hanging bolt 110, so the operator does not need to support the brace connecting member 6 with his/her hands. Also, as shown in FIG. 7, the tip of the brace bolt 120 can be inserted between the brace connecting member 6 and the first extending portion 11.

FIG. 8 is a side view showing an example of mounting the brace bolt 120 between the first extending portion 11 and the brace connecting member 6. As shown in FIG. As shown in FIG. 8(a), the operator inserts the tip of the brace bolt 120 between the two fastening bolts 4, 4 provided at both ends of the brace connecting member 6. As described above, the two fastening bolts 4, 4 are provided at diagonally inclined positions in the first extension portion 11. Further, the interval between the two fastening bolts 4, 4 is such that the brace bolt 120 can be swung at least within a predetermined angle range. Therefore, when inserting the tip of the brace bolt 120 between the two fastening bolts 4, 4, the operator can adjust the arrangement angle of the brace bolt 120 within a predetermined angle range. FIG. 8(b) is a sectional view showing a state in which the brace connecting member 6 is omitted. For example, when the horizontal line L1 is set as a reference of 0°, the two fastening bolts 4, 4 are regulated so that the mounting angle θ of the brace bolt 120 is within the range of 45°±15°; The brace bolt 120 can be inserted at any angle if there is one. This is because if the arrangement angle of the brace bolt 120 is less than 30 degrees or exceeds 60 degrees, the necessary strength cannot be secured, and the distance between the two fastening bolts 4, 4 By regulating the angle at which the brace bolts 120 are arranged, a decrease in strength can be suppressed. Therefore, when attaching the brace bolt 120 to the brace coupling fitting 1, the operator will not accidentally place the brace bolt 120 at an angle outside the predetermined angle range. In other words, the brace connecting fitting 1 has a fail-safe function regarding the mounting angle θ of the brace bolt 120.

The above-described brace connecting member 6 is attached to the first extending portion 11 in a state inclined at a predetermined angle α with respect to the vertical direction Z, as shown in FIG. 8(a), for example. Preferably, this predetermined angle α is, for example, about 45 degrees. If the predetermined angle α is about 45 degrees, even if the brace coupling fitting 1 is turned upside down, the mounting angle θ of the brace bolt 120 can be regulated within the range of 45 degrees ± 15 degrees. However, the predetermined angle α is not necessarily limited to 45 degrees. For example, the predetermined angle α may be within the range of 30° to 60°.

After inserting the brace bolt 120 between the brace connecting member 6 and the first extending portion 11 and adjusting the mounting angle θ to an appropriate angle, the operator tightens the nut 5 using a power tool or the like. As a result, the brace connecting member 6 approaches the first extending portion 11 against the urging force of the urging member 7, and fixes the brace bolt 120 by sandwiching it between the brace connecting member 6 and the first extending portion 11. At this time, since the head 4a of the fastening bolt 4 engages with the protrusion 24 formed on the first extending portion 11, the fastening bolt 4 does not rotate even if rotational force is applied to the nut 5. Therefore, the nut 5 can be easily tightened onto the shaft portion 4b. In addition, since the nut 5 is placed on the outside (front side) of the brace connecting member 6, the operator can easily attach a power tool or the like to the nut 5 and perform tightening work easily and efficiently. can.

FIG. 9 is a cross-sectional view showing the displacement of the brace connecting member 6 as the nut 5 is tightened. When the nut 5 is tightened with the brace bolt 120 inserted between the brace connecting member 6 and the first extension portion 11, the brace connecting member 6 changes from the state shown in FIG. 9(a) to the state shown in FIG. 9(b). ) is displaced to the state shown in (). That is, as the nut 5 is tightened, the brace connecting member 6 approaches the first extending portion 11 and presses the outer peripheral surface of the brace bolt 120. When the nut 5 is further tightened, as shown in FIG. 9(b), the protrusion 32 formed on the surface of the brace connecting member 6 that faces the first extending portion 11 is deformed, and the outer periphery of the brace bolt 120 is deformed. Engages with the surface (thread groove). The brace bolt 120 is fixed between the brace connecting member 6 and the first extending portion 11 by deforming the protruding portion 32 and engaging with the threaded groove of the brace bolt 120 . As a result, the brace bolt 120 maintains the mounting angle θ and is connected to the hanging bolt 110 without slipping in the axial direction. That is, one end of the brace bolt 120 is fixed at a predetermined height position of the hanging bolt 110.

Further, by tightening the nut 5, the second extending portion 21 of the second metal fitting 3 is fixed in a state where it is sandwiched between the brace bolt 120 and the first extending portion 11. As a result, the brace connecting fitting 1 is no longer temporarily fixed, but is fixed to the hanging bolt 110.

That is, the brace connection fitting 1 of the present embodiment can be attached to the hanging bolt 110 by tightening a total of four nuts 5 attached to the outside of the pair of first extending portions 11, 11 of the first fitting 2; This allows the brace bolt 120 to be connected at the same time. Therefore, compared to the conventional case where a total of six bolts must be tightened, the nut 5 only needs to be tightened at four locations, making it possible to reduce the work time to about two-thirds. , work efficiency can be improved.

Further, in this embodiment, the fastening bolt 4 includes a bolt for connecting the brace bolt 120 and a bolt for fixing the second metal fitting 3 to the first metal fitting 2 and fixing the brace connecting metal fitting 1 to the hanging bolt 110. It has both. According to such a configuration, it is possible not only to reduce the number of bolts than in the past, but also to bring the mounting position of the brace connecting member 6 closer to the hanging bolt 110 than in the past. Therefore, in the brace connecting fitting 1, the fixing position for the hanging bolt 110 and the connecting position for the brace bolt 120 can be provided closer to each other than in the past, and the reinforcing effect of the brace bolt 120 can be increased more than in the past. There is also the advantage of being able to do so.

As described above, the brace connecting fitting 1 of this embodiment is a fitting for connecting the brace bolt 120 to the hanging bolt 110, and includes the first fitting 2, the fastening bolt 4, and the second fitting 3. We are prepared. The first metal fitting 2 extends from the first holding part 10 in directions substantially perpendicular to each other in order to connect the first holding part 10 curved along the outer peripheral surface of the hanging bolt 110 and the brace bolt 120. It is an L-shaped first metal fitting having a pair of first extending portions 11, 11, and a bolt insertion hole 12 formed in each of the pair of first extending portions 11, 11. Further, the fastening bolt 4 is a bolt whose shaft portion 4b is inserted into the bolt insertion hole 12, and a nut 5 is previously attached to the tip of the shaft portion 4b. Further, the second metal fitting 3 is arranged on the outside of the pair of first extending portions 11, 11, and is connected to a second holding portion 20 that is curved along the outer circumferential surface of the hanging bolt 110, and is connected to the second holding portion 20 from the second holding portion 20 to each other. It has a pair of second extension parts 21, 21 extending in a direction forming a substantially right angle and arranged parallel to the pair of first extension parts 11, 11, and has a pair of second extension parts 21, 21, 21 is an L-shaped metal fitting in which a U-shaped notch 22 is formed along the vertical direction. In such a configuration, the brace connecting fitting 1 connects the second fitting 3 on the outside of the pair of first extending portions 11, 11 of the first fitting 2 when the fastening bolt 4 and nut 5 are in a non-fastened state. The structure is such that the second metal fitting 3 can be attached to and removed from the outside of the first metal fitting 2 by sliding the fastening bolt 4 in the vertical direction and moving the shaft portion 4b of the fastening bolt 4 forward and backward with respect to the notch 22. Therefore, the brace connection fitting 1 of this embodiment allows the second fitting 3 to be removed from the inside of the first fitting 2 without removing the nut 5 that is pre-installed on the tip of the shaft portion 4b of the fastening bolt 4, or It is possible to attach the second fitting 3 to the inside of the first fitting 2 after attaching the hanging bolt 110 to the inside of the first holding part 10, and it is possible to attach the brace connecting fitting 1 to the hanging bolt 110 as in the conventional case. Since there is no need to remove the fastening bolt 4 during installation, the work efficiency is superior to that of the conventional method.

Further, the brace connecting fitting 1 of this embodiment is provided with a total of four fastening bolts 4, and when connecting two brace bolts 120 to the hanging bolt 110, these four fastening bolts 4 are used. All that is required is to tighten the nut 5 that is attached. In other words, the number of times the tightening work is performed can be reduced compared to the conventional method, so that work efficiency can be improved.

FIG. 10 is a diagram showing a modified example of the washer 8, with (a) showing a perspective view and (b) showing a sectional view. As shown in FIG. 10, the washer 8 may have at least a portion of its peripheral edge bent. Note that FIG. 10 shows the washer 8 whose entire peripheral edge is bent. This washer 8 has a central flat plate part 80 and a peripheral edge part 82 bent from the flat plate part 80 at a predetermined angle, as shown in FIG. 10(b), for example. A hole 81 is formed in the center of the flat plate portion 80, through which the shaft portion 4b of the fastening bolt 4 is inserted. This washer 8 is attached to the first metal fitting 2 so that the flat plate part 80 is joined to the first extending part 11.

FIG. 11 is a diagram showing a state in which the washer 8 is attached to the first metal fitting 2. As shown in FIG. As shown in FIG. 11(a), when the flat plate portion 80 of the washer 8 is attached to the first extending portion 11 of the first metal fitting 2, the peripheral edge portion 82 of the washer 8 is attached to the first extending portion 11. It becomes a state floating from the first extension part 11. Therefore, a space 83 into which the second metal fitting 3 is inserted is formed between the peripheral edge part 82 of the washer 8 and the first extending part 11. As a result, when inserting the second extending part 21 of the second metal fitting 3 between the washer 8 and the first extending part 11, the second extending part 21 is inserted into the space 83 as shown in FIG. 11(b). 21, it becomes easier to attach the second metal fitting 3 to the first metal fitting 2. Therefore, if the washer 8 to be attached to the shaft portion 4b of the fastening bolt 4 is a washer 8 whose peripheral edge portion 82 is bent in advance as shown in FIG. 10, the work efficiency can be further improved.

Next, FIG. 12 is a diagram showing a modification of the protrusion 13 formed on the first metal fitting 2. As shown in FIG. As shown in FIG. 12, the protrusion 13 is formed as an inclined surface such that the amount of protrusion increases from the upstream side to the downstream side in the direction in which the second metal fitting 3 is inserted into the first metal fitting 2 (direction of arrow F3). It may be formed. In this case, when attaching the second metal fitting 3 to the first metal fitting 2, the pair of second extending portions 21, 21 of the second metal fitting 3 are moved by sliding the second metal fitting 3 along the arrow F3 direction. It begins to move along the slope of the protrusion 13. Therefore, when inserting the second extending part 21 of the second metal fitting 3 between the washer 8 and the first extending part 11, the second extending part 21 can be inserted smoothly, improving work efficiency. It can be further improved.

In addition, in the above, the case where the brace connecting metal fitting 1 is mainly attached to the lower part of the hanging bolt 110 was illustrated, but when attaching it to the upper part of the hanging bolt 110, what is necessary is just to invert up and down and use it.

(Second embodiment)
Next, a second embodiment of the present invention will be described. FIG. 13 is a perspective view showing a brace connection fitting 1 according to a second embodiment of the present invention. FIG. 14 is a perspective view of the first metal fitting 2 of the brace connecting metal fitting 1 in an exploded state, viewed from the front side (outside).

As shown in FIGS. 13 and 14, this brace connecting fitting 1 includes a first fitting 2, a second fitting 3, a fastening bolt 4, a nut 5, a brace connecting member 6, an urging member 7, It is equipped with a washer 8. The first metal fitting 2 is a metal fitting bent into an approximately L shape. The second metal fitting 3 is also a metal fitting bent into a generally L-shape as a whole. The second metal fitting 3 is arranged outside the bent portion of the first metal fitting 2. For example, the inner surface of the second metal fitting 3 is arranged so as to be joined to the outer surface of the first metal fitting 2. In the brace connecting fitting 1, the L-shaped bent corner portion is attached to a predetermined height position of the hanging bolt 110 in a state where the second fitting 3 is assembled to the first fitting 2.

As shown in FIG. 14, the first metal fittings 2 are arranged at approximately right angles to each other from the first holding part 10 in order to connect the first holding part 10 which is curved along the outer peripheral surface of the hanging bolt 110 and the brace bolt 120. It is an L-shaped metal fitting having a pair of first extending portions 11, 11 extending in a direction in which bolts are inserted, and a bolt insertion hole 12 is formed in each of the pair of first extending portions 11, 11. One bolt insertion hole 12 is provided in each of the pair of first extending portions 11, 11. Note that, like the first embodiment, the first holding part 10 is formed at an L-shaped bent corner of the first metal fitting 2, and is formed inside a pair of first extending parts 11, 11 that are substantially perpendicular to each other. The suspension bolt 110 is held in a state in which the outer surface of the corner portion is joined to the outer circumferential surface of the suspension bolt 110, and has a curved shape that is concave.

The pair of first extending portions 11, 11 are formed as flat plate portions extending substantially perpendicularly from the first holding portion 10, and a bolt insertion hole 12 is formed at the center position of each of the first extending portions 11, 11. There is. Note that the inner diameter of the bolt insertion hole 12 is larger than the outer diameter of the shaft portion 4b of the fastening bolt 4.

Note that the first extending portions 11, 11 have protrusions that engage with the second metal fitting 3 when the second metal fitting 3 is attached to the outside of the first metal fitting 2, as described in the first embodiment. 13 may be provided on the first metal fitting 2 to restrict the second metal fitting 3 from separating from the first metal fitting 2.

The shaft portion 4b of the fastening bolt 4 is inserted into the bolt insertion hole 12. At this time, the head 4a of the fastening bolt 4 is placed inside the pair of first extending portions 11, 11, and the shaft portion 4b is inserted from the inside of the pair of first extending portions 11, 11 toward the outside. be done. That is, the fastening bolt 4 is inserted into the bolt insertion hole 12 with the tip of the shaft portion 4b protruding outside the first extending portion 11. Therefore, the shaft portion 4b of one fastening bolt 4 protrudes from the outside of one first extending portion 11.

The washer 8, the biasing member 7, the brace connecting member 6, and the nut 5 are attached in this order to the shaft portion 4b of the fastening bolt 4 inserted into the bolt insertion hole 12. That is, the washer 8 is disposed between the first extending portion 11 and the biasing member 7, the biasing member 7 is disposed between the washer 8 and the brace connecting member 6, and the brace connecting member 6 is It is arranged between the member 7 and the nut 5. A nut 5 is attached to the tip of the shaft portion 4b in an unfastened state in which the nut 5 is not tightly tightened in advance.

One brace connecting member 6 is arranged on the outside of the pair of first extending portions 11 . The brace connecting member 6 of this embodiment includes a flat plate part 90 in which a hole 93 is formed through which the shaft part 4b of the fastening bolt 4 is inserted, and a mutually parallel plate part 90 formed by bending both ends of the flat plate part 90 at approximately right angles. This configuration has a holding portion 92 that restrains and holds the outer peripheral surface of the brace bolt 120 on the mutually parallel wall portions 91. For example, the holding portion 92 is formed as a recessed portion formed by cutting out the tips of a pair of mutually parallel wall portions 91 in a U-shape. These holding parts 92 engage with the outer peripheral surface (thread groove) of the brace bolt 120 when the brace bolt 120 is sandwiched between the brace connecting member 6 and the first extension part 11, and prevent displacement of the brace bolt 120. to regulate.

The biasing member 7 is formed of a coil spring, for example, and urges the brace connecting member 6 in a direction away from the first extending portion 11 so that the distance between the brace connecting member 6 and the first extending portion 11 is a predetermined distance or more. to strengthen

The washer 8 is a member in which a hole through which the shaft portion 4b of the fastening bolt 4 can be inserted is formed in the center of a disc-shaped metal plate. It is held in a state where it is joined to. Note that the washer 8 may be one in which at least a portion of the peripheral portion 82 is bent as shown in FIG.

The second metal fitting 3 includes a second holding part 20 that is curved along the outer circumferential surface of the hanging bolt 110, and a second holding part 20 that extends from the second holding part 20 in directions perpendicular to each other in order to be attached to the outside of the first metal fitting 2. The L-shaped metal fitting has a pair of second extending portions 21, 21, and a U-shaped notch 22 is formed in each of the pair of second extending portions 21, 21 along the vertical direction. It is.

The second holding portion 20 is formed at an L-shaped bent corner of the second metal fitting 3 and has a curved shape that follows the outer circumferential surface of the hanging bolt 110 . The suspension bolt 110 is held in a state where it is joined to the holder. The second holding part 20 is arranged to face the first holding part 10 of the first metal fitting 2, and holds the hanging bolt 110 by sandwiching it between the second holding part 10 and the first holding part 10 of the first metal fitting 2.

The pair of second extending portions 21, 21 are formed as flat plate portions extending substantially perpendicularly from the second holding portion 20. The pair of second extending portions 21, 21 extending from the second holding portion 20 have the same length. The pair of second extending portions 21, 21 are arranged, for example, at positions close to the pair of first extending portions 11, 11 of the first metal fitting 2. Moreover, a notch 22 is formed in each of the pair of second extending portions 21, 21, which is cut out in the vertical direction from the upper end of the second extending portion 21 to a predetermined depth. This notch 22 has a width that can accommodate the shaft portion 4b of the fastening bolt 4 inserted into the bolt insertion hole 12 of the first metal fitting 2 inside thereof. The notch portion 22 is formed on the shaft portion 4 b of the fastening bolt 4 when the pair of second extending portions 21 , 21 are arranged so as to be joined to the pair of first extending portions 11 , 11 of the first metal fitting 2 . is formed in a position that allows it to be accommodated inside. Moreover, the notches 22 formed in each of the pair of second extending portions 21 are formed at positions that are symmetrical to each other with the second holding portion 20 in between.

In addition, when the protrusion part 13 is provided in the pair of first extending parts 11, 11 of the first metal fitting 2, the lower end of each of the pair of second extending parts 21, 21 is provided with the same as in the first embodiment. Additionally, an engaging portion 23 that engages with the protrusion 13 provided on the first metal fitting 2 may be provided. In this case, it is possible to prevent the second metal fitting 3 from separating from the first metal fitting 2 while the second metal fitting 3 is attached to the outside of the first metal fitting 2.

The second metal fitting 3 configured as described above is arranged outside the first metal fitting 2. That is, the second metal fitting 3 is arranged on the outside of the first metal fitting 2 so that the pair of second extending portions 21, 21 are close to the pair of first extending portions 11, 11 of the first metal fitting 2. Ru. At this time, the second metal fitting 3 is in a state where the pair of second extending portions 21, 21 are inserted between the washer 8 and the pair of first extending portions 11, 11 of the first metal fitting 2, and the notch The shaft portion 4b of the fastening bolt 4 is inserted into the inside of the bolt 22.

That is, when the second metal fitting 3 is attached to the outside of the first metal fitting 2, by sliding the second metal fitting 2 in the vertical direction with respect to the first metal fitting 2, the pair of second extending portions 21, 21 are connected to the washer 8 and the second metal fitting 2. 1 and the extended portions 11, 11. Since the biasing member 7 disposed on the outside of the pair of first extending portions 11 presses and biases the washer 8 toward the first extending portions 11, the second metal fitting 3 When both ends of the extensions 21, 21 are inserted between the washer 8 and the first extensions 11, 11, they are joined to the first metal fitting 2 by the biasing force of the biasing member 7. It is in a temporarily fixed state.

Such a brace connection fitting 1 may be delivered to the construction site with the first fitting 2 and the second fitting 3 separated, or the second fitting 2 may be placed outside the first fitting 2. 3 may be transported in a temporarily fixed state. For example, if the brace connecting fitting 1 is delivered to a construction site with the second fitting 3 temporarily attached to the outside of the first fitting 2, when attaching the brace connecting fitting 1 to the hanging bolt 110, first The metal fitting 3 is once removed from the first metal fitting 2. Thereafter, the hanging bolt 110 is attached to the outside of the first holding part 10 of the first metal fitting 2, and then the second metal fitting 3 is attached to the outside of the first metal fitting 2 again. At this time, the brace connection fitting 1 of this embodiment allows the second fitting 3 to be attached to and detached from the first fitting 2 by sliding the second fitting 3 vertically relative to the first fitting 2. Therefore, the second metal fitting 3 can be easily attached to and removed from the first metal fitting 2 without removing the fastening bolt 4 from the first metal fitting 2.

FIG. 15 is a diagram showing a procedure for attaching the brace connection fitting 1 of this embodiment to the hanging bolt 110. Incidentally, FIG. 15 shows a procedure for attaching the brace connecting fitting 1a, which is attached to the lower part of the hanging bolt 110, among the brace connecting fittings 1a and 1b shown in FIG. First, as shown in FIG. 15(a), the operator attaches the first metal fitting 2 from which the second metal fitting 3 has been removed to the hanging bolt 110. That is, the operator attaches the suspension bolt 110 so that the outer circumferential surface of the suspension bolt 110 is in contact with the outside (curved inner circumferential surface side) of the first holding part 10 of the first metal fitting 2 . Thereafter, the operator places the second metal fitting 3 at a lower position on the outside of the first metal fitting 2, and slides the second metal fitting 3 upward as shown by arrow F3 in FIG. 15(a). At this time, the operator inserts the pair of second extending parts 21, 21 of the second metal fitting 3 between the washer 8 and the first extending part 11, as shown in FIG. 15(b). Then, the operator slides the second metal fitting 3 further upward and inserts the second metal fitting 3 between the washer 8 and the first extending portion 11. Along with this, the shaft portion 4b of the fastening bolt 4 enters inside the notch portion 22 formed in the second extending portion 21. When the second metal fitting 3 is inserted until the shaft portion 4b of the fastening bolt 4 reaches a position near the end of the notch 22, the state shown in FIG. It will be in a temporarily fixed state. In this temporarily fixed state, since the biasing member 7 presses the second metal fitting 3 toward the first metal fitting 2, the second metal fitting 3 does not separate from the first metal fitting 2.

Further, in the temporarily fastened state shown in FIG. 15(b), the hanging bolt 110 is sandwiched between the first holding part 10 of the first metal fitting 2 and the second holding part 20 of the second fitting 3. Therefore, the brace connecting fitting 1 is temporarily fixed at a predetermined height position of the hanging bolt 110. In this temporarily fixed state, the engagement protrusion 14 formed on the outside of the first holding part 10 engages with the threaded groove formed on the outer peripheral surface of the hanging bolt 110, so the brace connecting fitting 1 moves in the vertical direction. Positioned so that there is no need to do anything.

In this way, the brace connecting fitting 1 of the present embodiment can be configured by sliding the second fitting 3 in the vertical direction while keeping the fastening bolt 4 and nut 5 in the unfastened state in which they are not tightly tightened. It is possible to easily perform operations such as removing the metal fitting 3 from the first metal fitting 2 and attaching the second metal fitting 3 to the first metal fitting 2.

In the temporarily fastened state shown in FIG. 15(b), the fastening bolt 4 and nut 5 are not fastened, so the biasing force of the biasing member 7 causes the space between the brace connecting member 6 and the second extending portion 21 to It's wide open. Therefore, the operator can easily insert the brace bolt 120 between the brace connecting member 6 and the second extending portion 21 in the temporarily fixed state.

FIG. 16 is a perspective view showing an example in which the brace bolt 120 is attached with the brace connecting fitting 1 temporarily fastened to the hanging bolt 110. Note that, similarly to FIG. 15, FIG. 16 also illustrates the brace connection fitting 1a attached to the lower part of the hanging bolt 110. When the brace connecting fitting 1 is temporarily fixed to the hanging bolt 110, the brace connecting member 6 is rotatable in the R direction about the fastening bolt 4, as shown in FIG. 16(a). Therefore, the attitude (angle) of the brace connecting member 6 can be adjusted to match the arrangement angle of the brace bolt 120. At this time, the brace connecting member 6 is temporarily fixed at a predetermined height position of the hanging bolt 110. Therefore, the operator can easily attach the brace bolt 120 to the holding portion 92 of the brace connecting member 6 while adjusting the posture of the brace connecting member 6.

After attaching the brace bolt 120 to the holding portion 92 of the brace connecting member 6, the operator tightens the nut 5 using a power tool or the like. As a result, the brace connecting member 6 approaches the second extending portion 21 against the urging force of the urging member 7, and fixes the brace bolt 120 by sandwiching it between the brace connecting member 6 and the second extending portion 21. At this time, since the nut 5 is placed on the outside (front side) of the brace connecting member 6, the operator can easily attach a power tool etc. to the nut 5 and perform the tightening work easily and efficiently. Can be done. As described in the first embodiment, if the projection 24 is provided inside the first extension 11, the head 4a of the fastening bolt 4 can be engaged with the projection 24 when tightening the nut 5. Therefore, even if the nut 5 rotates, the fastening bolt 4 does not rotate, and the nut 5 can be easily tightened.

As described above, the brace connecting fitting 1 of this embodiment is a fitting for connecting the brace bolt 120 to the hanging bolt 110, as in the first embodiment, and the first fitting 2 and the second fitting 3 are connected to each other. , a fastening bolt 4, a nut 5, a brace connecting member 6, an urging member 7, and a washer 8. The brace connecting fitting 1 of the present embodiment connects the second fitting 3 on the outside of the pair of first extending portions 11, 11 of the first fitting 2 when the fastening bolt 4 and nut 5 are in a non-fastened state. The structure is such that the second metal fitting 3 can be attached to and removed from the outside of the first metal fitting 2 by moving the shaft portion 4b of the fastening bolt 4 forward and backward with respect to the notch 22 by sliding it in the vertical direction. Therefore, the brace connection fitting 1 of this embodiment allows the second fitting 3 to be removed from the inside of the first fitting 2 without removing the nut 5 that is pre-installed on the tip of the shaft portion 4b of the fastening bolt 4, or It is possible to attach the second fitting 3 to the inside of the first fitting 2 after attaching the hanging bolt 110 to the inside of the first holding part 10, and it is possible to attach the brace connecting fitting 1 to the hanging bolt 110 as in the conventional case. Since there is no need to remove the fastening bolt 4 during installation, the work efficiency is superior to that of the conventional method.

In particular, the brace connecting fitting 1 of this embodiment includes a total of two fastening bolts 4, and when connecting the two brace bolts 120 to the hanging bolt 110, the two fastening bolts 4 are attached. All you need to do is tighten the nut 5 that is in place. Therefore, the number of times the tightening work is performed can be reduced compared to the conventional method, so that work efficiency can be improved.

In this embodiment, the case where the brace connecting fitting 1 is mainly attached to the lower part of the hanging bolt 110 is illustrated, but when it is attached to the upper part of the hanging bolt 110, it may be used by inverting the top and bottom. Further, other points in the brace connecting fitting 1 of this embodiment are the same as those described in the first embodiment.

(Modified example)
Although preferred embodiments of the present invention have been described above, the present invention is not limited to what has been described in the above embodiments. That is, the present invention includes various modifications of the embodiments described above.

For example, in the first embodiment described above, the case where the brace connecting member 6 is attached to the pair of first extending portions 11, 11 of the first metal fitting 2 in an oblique direction is illustrated. However, the present invention is not limited to this, and the brace connecting member 6 may be attached in a vertical direction parallel to the hanging bolt 110, or may be attached in a horizontal direction. In this case, even if the brace connecting fitting 1 is turned upside down, the same structure will be obtained. Therefore, the operator does not need to be concerned about the orientation (posture) of the brace connection fitting 1, regardless of whether it is attached to the upper or lower part of the hanging bolt 110.

DESCRIPTION OF SYMBOLS 1 (1a, 1b)... Brace connecting fitting, 2... First fitting, 3... Second fitting, 4... Fastening bolt, 5... Nut, 6... Brace connecting member, 7... Biasing member, 8... Washer, 10... First holding part, 11... First extending part, 12... Bolt insertion hole, 20... Second holding part, 21... Second extending part, 22... Notch, 110... Hanging bolt, 120... Brace bolt.

Claims (6)

A brace connection fitting for connecting a brace bolt to a hanging bolt,
a first holding part curved along the outer circumferential surface of the suspension bolt; and a pair of first extension parts extending from the first holding part in directions substantially perpendicular to each other to connect the brace bolt. a first metal fitting having a bolt insertion hole formed in each of the pair of first extending portions;
a fastening bolt whose shaft portion is inserted into the bolt insertion hole, and a nut is pre-installed on the tip of the shaft portion;
a second holding part arranged outside the pair of first extending parts and curved along the outer peripheral surface of the hanging bolt; and a second holding part extending from the second holding part in directions substantially perpendicular to each other, and The second extending portion has a pair of first extending portions and a pair of second extending portions arranged in parallel, and a U-shaped notch is vertically formed in each of the pair of second extending portions. 2 metal fittings and
Equipped with
When the fastening bolt and the nut are in a non-fastened state, the shaft portion of the fastening bolt is moved by sliding the second metal fitting in the vertical direction on the outside of the pair of first extending portions of the first metal fitting. A brace connecting metal fitting characterized in that the second metal fitting can be attached to and removed from the outside of the first metal fitting by moving the second metal fitting forward and backward with respect to the notch. By tightening the fastening bolt and the nut with the hanging bolt sandwiched between the first holding part and the second holding part, the first metal fitting and the second fitting can be attached to the hanging bolt. The brace connection fitting according to claim 1, wherein the brace connection fitting is fixed to. The first metal fitting may have a protrusion on the outside of the pair of first extending portions that restricts vertical sliding of the second metal fitting when the second metal fitting is attached to the first metal fitting. The brace connection fitting according to claim 1 or 2, characterized in that: The first metal fitting has a plurality of bolt insertion holes formed in each of the pair of first extending portions, and the fastening bolt is inserted into each of the plurality of bolt insertion holes in an unfastened state in advance,
The second metal fitting is characterized in that at least one of the notches is formed at a position corresponding to a shaft portion of the fastening bolt that protrudes outward from the pair of first extending portions of the first metal fitting. The brace connection fitting according to any one of claims 1 to 3. a brace connecting member that is disposed outside the pair of first extending portions of the first metal fitting and connects the brace bolt by sandwiching it between the pair of first extending portions;
further comprising;
The brace connecting member is held by the fastening bolt, and the fastening bolt and the nut are fastened to fix the brace bolt between the brace connecting member and the first extending portion. 5. The brace connection fitting according to any one of 1 to 4. an urging member attached to the shaft portion of the fastening bolt between the first extending portion and the brace connecting member, and biasing the first extending portion and the brace connecting member in a direction to widen the distance between the first extending portion and the brace connecting member; ,
a washer disposed between the biasing member and the first extending portion;
further comprising;
The brace connection fitting according to claim 5, wherein the second fitting is inserted between the first extending portion and the washer.

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