JP7454845B2 - ceiling mounting bracket - Google Patents

Description

The present invention relates to a ceiling mounting bracket, and particularly to a bracket for supporting a ceiling-hanging object such as an air conditioner while suspended from a ceiling structure.

2. Description of the Related Art Conventionally, a ceiling mounting bracket for attaching a ceiling-hanging object such as an air conditioner to a ceiling structure such as a ceiling slab in a suspended state has been known (for example, Patent Document 1). This conventional ceiling mounting bracket has a long hole through which a bolt member hanging down from the ceiling structure can be inserted, and is attached to the ceiling structure by inserting the bolt member into the long hole and tightening a nut to the bolt member. It will be done. The ceiling mounting bracket is also provided with a hole for inserting a support bolt that supports an object suspended from the ceiling, such as an air conditioner. The ceiling mounting bracket can be attached to a ceiling structure with the upper end of the support bolt temporarily secured in the hole, making it easier to work at heights when installing ceiling-hanging objects suspended from the ceiling structure. It has the advantage that it can be reduced.

Japanese Patent Application Publication No. 2020-12344

However, in conventional ceiling mounting brackets, bolt members hanging from the ceiling structure are inserted through long holes and fixed, so for example, in the event of a large-scale earthquake, the fixing position of the bolt member may slip along the length of the long hole. there is a possibility. If the fixing position of the bolt member slips when a large-scale earthquake occurs, the vibration amplitude of the support bolt increases, causing a problem in that the object suspended from the ceiling also vibrates greatly.

Further, after a large-scale earthquake subsides, there is a possibility that the position of the ceiling hanging object has moved in the horizontal direction, and there is a problem that the fixing position of the bolt member must be readjusted.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a ceiling mounting bracket that can prevent sideways sliding of the fixed position of a bolt member while reducing work at heights. shall be.

In order to achieve the above object, firstly, the present invention provides a ceiling mounting bracket that is attached to a bolt (6) hanging from a ceiling structure (8) and is installed in a state joined to the lower surface of the ceiling structure (8). (1) from both ends of the flat plate part (11) across the long hole (13); A metal fitting main body (2) having a side wall portion (12) that stands upright and is joined to the lower surface of the ceiling structure (8) and an insertion hole (16) through which the bolt (6) can be inserted are formed, and the insertion hole (16) through which the bolt (6) can be inserted is formed. The plate member (3) is attached to the flat plate part (11) with the bolt (6) inserted into the hole (16), and the plate member (3) is attached at a position different from the elongated hole (13). ) and the flat plate part (11) to fix the position of the bolt (6) in the longitudinal direction of the elongated hole (13). It is configured to do this.

Second, the present invention provides a ceiling mounting bracket (1) having the first configuration described above, in which an elastic member is attached to the outer peripheral surface of the bolt (6) and whose upper end portion is joined to the lower surface of the ceiling structure (8). The plate member (3) is arranged on the upper surface side of the flat plate part (11) and is pressed against the flat plate part (11) by the urging force of the elastic member (5). The fastening member (4) is configured to be fastened by penetrating both the flat plate part (11) and the plate member (3) from the lower surface side of the flat plate part (11). be.

Thirdly, in the ceiling mounting bracket (1) having the second configuration, the fastening member is provided on the lower surface side of the flat plate portion (11) along the peripheral edge of the elongated hole (13). This configuration is characterized in that a fastening hole (15) is formed for embedding (4).

Fourthly, in the ceiling mounting bracket (1) having the first configuration, the plate member (3) is arranged on the lower surface side of the flat plate part (11), and the fastening member (4) is a structure characterized in that the fastening is performed by penetrating both the plate member (3) and the flat plate portion (11) from the lower surface side of the plate member (3).

Fifthly, the present invention provides a ceiling mounting bracket (1) having any of the configurations of the first to fourth aspects, wherein the flat plate portion (11) is provided with a ceiling mounting bracket at a position near the elongated hole (13). This configuration is characterized in that a mounting hole (14) is further provided for mounting a support bolt (7) that supports the hanging item (200).

According to the present invention, it is possible to assemble the object suspended from the ceiling in advance by working on the floor, and it is also possible to easily perform the work of attaching it to the ceiling structure, thereby dramatically improving work efficiency compared to the past. I can do it.

FIG. 3 is a perspective view showing an exploded state of each component of the ceiling mount according to the first embodiment. FIG. 2 is a perspective view showing a state in which each component of the ceiling mount according to the first embodiment is assembled. FIG. 3 is a partial cross-sectional view showing a first step in installing the ceiling mounting bracket. FIG. 7 is a partial cross-sectional view showing a second step when installing the ceiling mounting bracket. FIG. 7 is a partial cross-sectional view showing a third step in installing the ceiling mounting bracket. FIG. 3 is a diagram showing an example of a structure in which a ceiling mounting bracket supports an object suspended from the ceiling. It is a figure which shows the example of 1 structure of the ceiling mounting bracket in 2nd Embodiment. FIG. 7 is a perspective view showing a state in which the ceiling mounting bracket of the second embodiment is installed. FIG. 7 is a perspective view showing an example of a configuration of a ceiling mount according to a third embodiment.

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)
1 and 2 are perspective views showing an example of the configuration of a ceiling mounting bracket 1 according to a first embodiment of the present invention. FIG. 1 shows an exploded state of each component, and FIG. The state in which the constituent members are assembled is shown. This ceiling mounting bracket 1 includes bolts 6 that hang down from the lower surface of a ceiling structure such as a deck plate or ceiling slab, and support bolts that support a ceiling-hanging object such as an air conditioner in a suspended state at a position below the ceiling structure. 7, and is installed in a state where it is joined to the lower surface of the ceiling structure. 1 and 2, the upper end of the bolt 6 is fixed to a ceiling structure (not shown), and the lower end of the support bolt 7 is connected to a ceiling suspension (not shown). Moreover, in this embodiment, a case is illustrated in which bolts of the same diameter are used as the bolt 6 and the support bolt 7.

As shown in FIG. 1, the ceiling mounting bracket 1 includes a bracket body 2 having a U-shaped cross section, a plate member 3 attached to the bracket body 2, and a plate member 3 fixed to the bracket body 2. and an elastic member 5 attached to the outer peripheral surface of the bolt 6.

The metal fitting main body 2 is made of iron, stainless steel, or the like, and has a rectangular flat plate portion 11 and a pair of side wall portions 12, 12 standing from both ends of the flat plate portion 11 in the short direction. That is, the metal fitting main body 2 is formed into a substantially U-shape by the flat plate portion 11 and the pair of side wall portions 12, 12. The flat plate part 11 has a long hole 13 through which the bolt 6 can be inserted, and a mounting hole 14 through which the support bolt 7 can be inserted, apart from the long hole 13, at a position adjacent to each other along the longitudinal direction of the flat plate part 11. is formed.

The elongated hole 13 is formed as an elongated hole along the longitudinal direction of the flat plate part 11 in the central part of the flat plate part 11 in the short direction. The width of the long hole 13 is formed to be slightly larger than the diameter of the bolt 6. The bolt 6 can be inserted into the long hole 13 at any position.

The attachment hole 14 is formed at a predetermined distance from one end of the elongated hole 13, and is formed as a round hole with a diameter slightly larger than the diameter of the support bolt 7. However, the shape of the attachment hole 14 is not necessarily limited to a round hole, and may be a square hole.

Further, the flat plate portion 11 has a plurality of fastening holes 15 formed at predetermined intervals along the longitudinal direction of the elongated hole 13 at the peripheral edge of the elongated hole 13 . These fastening holes 15 are formed in the flat plate portion 11 between the elongated hole 13 and the side wall portion 12 (for example, at an intermediate position between the elongated hole 13 and the side wall portion 12) so as to penetrate vertically. Further, each of the plurality of fastening holes 15 is formed as a round hole having a diameter that is approximately the same as the diameter of the fastening member 4 or slightly smaller than the diameter of the fastening member 4, for example.

The pair of side wall portions 12 , 12 are integrally formed with the flat plate portion 11 and have the same height from the flat plate portion 11 . The side wall portion 12 has both end portions higher in height than the center portion in the longitudinal direction of the metal fitting main body 2, and the both end portions are formed as a joint portion 12a that abuts against the lower surface of the ceiling structure. The side wall portion 12 forms a certain space between the flat plate portion 11 and the lower surface of the ceiling structure by joining with the lower surface of the ceiling structure. Since the center portion in the longitudinal direction of the side walls 12, 12 is lower than the joint portion 12a at both ends, when the joint portion 12a is in contact with the lower surface of the ceiling structure, the lower central portion can be used as a window. There is an advantage that the condition inside the ceiling mounting bracket 1 can be visually checked.

The plate member 3 is composed of a rectangular flat metal plate. For example, the plate member 3 is preferably made of a square or rectangular flat metal plate, and is thinner than the flat plate portion 11 of the fitting body 2. When the plate member 3 is square, the length of one side of the plate member 3 is formed to be smaller than the distance between the pair of side wall parts 12, 12 of the metal fitting main body 2, and larger than the width of the elongated hole 13. be done. Further, when the plate member 3 is rectangular, the length of the short side of the plate member 3 is smaller than the distance between the pair of side wall parts 12, 12 of the metal fitting main body 2, and larger than the width of the elongated hole 13. It is formed. Therefore, the plate member 3 can be placed on the upper surface of the flat plate part 11 between the pair of side wall parts 12, 12. An insertion hole 16 is formed in the center of the plate member 3, through which the bolt 6 inserted into the elongated hole 13 can be inserted. For example, the insertion hole 16 is formed as a round hole with a diameter slightly larger than the diameter of the bolt 6. The tip of the bolt 6 is inserted into the insertion hole 16 with the elastic member 5 attached to the bolt 6.

The elastic member 5 is composed of, for example, a coil spring. The outer diameter of the coil spring is equal to or smaller than the length of one side (short side) of the plate member 3. Further, the inner diameter of the coil spring is set to be slightly larger than the diameter of the bolt 6. Furthermore, the length in the axial direction passing through the center of the coil spring is approximately equal to or slightly larger than the height of the side wall portion 12 of the metal fitting body 2. This elastic member 5 can be attached to the outer peripheral surface of the bolt 6 by inserting the bolt 6 inside the coil spring. This elastic member 5 is arranged between the plate member 3 and the ceiling structure, and urges the plate member 3 toward the flat plate portion 11 of the metal fitting main body 2.

When the ceiling mounting bracket 1 is attached to a ceiling structure, the bracket main body 2 is arranged such that the tips of the pair of side wall portions 12, 12 face upward. When the metal fitting body 2 is attached to the bolt 6, the elastic member 5 and the plate member 3 are attached to the bolt 6. That is, the lower end of the bolt 6 to which the elastic member 5 and the plate member 3 are attached is inserted into the elongated hole 13 of the metal fitting main body 2, and the washer 21 and nut are attached to the tip of the bolt 6 that protrudes below the elongated hole 13. 22 is attached.

When the nut 22 is in a temporary state where it is not tightly tightened against the lower surface of the metal fitting body 2, the ceiling mounting metal fitting 1 is rotatable around the bolt 6 and the insertion position of the bolt 6 is set in the elongated hole 13. It is possible to move along the longitudinal direction. Therefore, the support bolt 7 attached to the attachment hole 14 can be placed in any direction around the bolt 6. Then, by tightening the nut 22 tightly to the metal fitting body 2, the metal fitting body 2 becomes in a state where the joint part 12a of the side walls 12, 12 is joined to the lower surface of the ceiling structure, and the tightening torque of the nut 22 causes the metal fitting body 2 to connect to the lower surface of the ceiling structure. Fixed.

Further, a nut 23 made of a long nut or the like is attached to the upper end of the support bolt 7 in advance. The tip end 7a of the support bolt 7 that protrudes further upward from the nut 23 is inserted into the attachment hole 14 from below the metal fitting body 2. A nut 24 is attached to the tip portion that projects upward. Thereby, the support bolt 7 is in a state where it is supported by the ceiling mounting bracket 1. Further, the ceiling mounting bracket 1 is prevented from falling off from the upper end portion of the support bolt 7 by the nut 24. Note that it is preferable to use a nut 24 that has a locking function.

When the nut 23 is in a temporary state where the nut 23 is not tightly tightened to the lower surface of the metal fitting body 2, the metal fitting body 2 of the ceiling mounting metal fitting 1 is rotatable around the support bolt 7. Therefore, when attempting to attach the metal fitting body 2 with the support bolt 7 attached to the bolt 6, the positions of the bolt 6 and the support bolt 7 are adjusted by rotating the metal fitting body 2 around the support bolt 7. be able to. Then, by adjusting the positions of the bolts 6 and the support bolts 7 and then tightly tightening the nuts 23 against the lower surface of the metal fitting body 2, the support bolts 7 can be integrally fixed to the metal fitting body 2. .

In this way, the ceiling mounting bracket 1 is a bracket that allows the position of the support bolt 7 with respect to the bolt 6 to be easily adjusted when connecting the bolt 6 and the support bolt 7. Once the position of the support bolt 7 with respect to the bolt 6 is determined, the fitting body 2 of the ceiling mounting bracket 1 can be fixed to the lower surface of the ceiling structure by tightly tightening the nut 22 to the fitting body 2. It is possible. Incidentally, it is arbitrary which one of the nut 22 and the nut 23 is tightened first.

Moreover, in the ceiling mounting bracket 1 of this embodiment, after the nut 22 is tightened to the bracket body 2 to fix it to the ceiling structure, the bracket body 2 and the plate member 3 are integrally coupled using the fastening member 4. It is a configuration that can be used. For example, the fastening member 4 is configured by a tapping screw, and is inserted into one or more fastening holes 15 formed at the position of the plate member 3 among the plurality of fastening holes 15 formed at the peripheral edge of the elongated hole 13. It is installed by being screwed into place. That is, as shown in FIG. 2, the fastening member 4 penetrates the flat plate part 11 from the lower surface side of the flat plate part 11 via the fastening hole 15 formed in the flat plate part 11, and is inserted into the upper side of the fastening hole 15. By being screwed into the located plate member 3, the metal fitting body 2 and the plate member 3 are integrally coupled. At this time, since the plate member 3 is pressed and biased toward the flat plate part 11 of the metal fitting main body 2 by the elastic member 5, when connecting the plate member 3 and the flat plate part 11 using the fastening member 4, the plate member 3 The member 3 does not float off the flat plate part 11. In other words, since the elastic member 5 presses the plate member 3 toward the flat plate portion 11 when the fastening member 4 is screwed into the plate member 3, the fastening member 4 is not embedded in the plate member 3. It is possible to do so. As a result, it becomes possible to integrally connect the plate member 3 and the flat plate portion 11. Thereby, the bolt 6 is fixed to the peripheral edge of the elongated hole 13. Therefore, even if a large lateral force is applied to the bolt 6 or the ceiling mounting bracket 1 in the event of a large-scale earthquake, the bolt 6 will not slide sideways along the elongated hole 13. Therefore, the ceiling mounting bracket 1 of this embodiment prevents the relative positions of the bolts 6 and support bolts 7 from changing even in the event of a large-scale earthquake, and keeps the relative positions of the bolts 6 and support bolts 7 constant. can be maintained in the same state.

FIG. 3 is a partial cross-sectional view showing the first step when installing the ceiling mounting bracket 1. As shown in FIG. As shown in FIG. 3, when attaching the ceiling mounting bracket 1 to a ceiling structure, first insert the upper end of the support bolt 7 with the nut 23 into the mounting hole 14 of the bracket body 2 from the bottom side of the bracket body 2. A nut 24 is attached to the tip of the support bolt 7 that protrudes from the upper surface of the flat plate portion 11. The nut 24 is positioned and attached to the tip of the support bolt 7, for example, with a locking function. For example, as shown in FIG. 3, the nut 24 is attached to the support bolt 7 so that the tip of the support bolt 7 protrudes a predetermined amount from the upper surface of the nut 24.

When the nut 23 is in a temporary state in which it is not tightened to the lower surface of the metal fitting body 2, the metal fitting body 2 can be rotated in the R1 direction around the axis of the support bolt 7. Therefore, in the ceiling mounting bracket 1, the support bolt 7 can be installed within a predetermined radius around the bolt 6. As shown in FIG. 3, the bolt 6 can be inserted into the long hole 13 by moving the ceiling mounting bracket 1 closer to the ceiling structure 8 with the long hole 13 of the metal fitting body 2 positioned below the bolt 6. I can do it. At this time, the elastic member 5 and the plate member 3 are attached to the bolt 6, as shown in FIG.

FIG. 4 is a partial cross-sectional view showing the second step when installing the ceiling mounting bracket 1. As shown in FIG. 4, after inserting the lower end of the bolt 6 previously attached to the ceiling structure 8 into the elastic member 5 and the insertion hole 16 of the plate member 3, insert the lower end into the elongated hole 13 of the metal fitting body 2. A washer 21 and a nut 22 are attached to the tip of the bolt 6 to temporarily secure it. When the nut 22 is temporarily tightened, the ceiling mounting bracket 1 is rotatable in the R2 direction around the axis of the bolt 6. Further, when the nut 22 is in a temporarily fastened state, the bolt 6 is movable along the elongated hole 13. Furthermore, when the nut 23 is in the temporarily fastened state, the ceiling mounting bracket 1 can be rotated around the axis of the support bolt 7. Therefore, in the ceiling mounting bracket 1, the relative position of the support bolt 7 with respect to the bolt 6 can be easily adjusted when the nuts 22 and 23 are in the temporarily fastened state. In addition, in this embodiment, although the case where the ceiling slab 82 of concrete etc. is cast in the upper surface of the deck plate 81 as the ceiling structure 8 is illustrated, the ceiling structure 8 is not necessarily limited to this. In this way, when the ceiling mounting bracket 1 of this embodiment is attached to the ceiling structure 8, its position and attitude can be easily adjusted according to the positional relationship between the support bolt 7 and the bolt 6. It is possible to efficiently perform installation work at high places.

FIG. 5 is a partial sectional view showing the third step when installing the ceiling mounting bracket 1. Once the relative position of the support bolt 7 with respect to the bolt 6 is determined, the nut 22 is tightened as shown in FIG. becomes. Then, by tightly tightening the nut 22, the ceiling mounting bracket 1 is fixed to the ceiling structure 8. Next, the nut 23 that has been attached to the support bolt 7 in advance is tightened against the lower surface of the metal fitting body 2. As a result, the flat plate portion 11 is sandwiched between the nuts 23 and 24, and the support bolt 7 is fixed to the ceiling mounting bracket 1. When the ceiling mounting bracket 1 is fixed to the ceiling structure 8 in this way, the elastic member 5 is compressed by being sandwiched between the lower surface of the ceiling structure 8 and the upper surface of the plate member 3, and the plate member 3 Pressure is applied to the flat plate portion 11 of No. 2.

In a fixing mode in which the nut 22 is simply tightened, the bolt 6 is fixed only by a frictional force corresponding to the tightening force of the nut 22 in the lateral direction. Therefore, if a large lateral force is applied to the bolt 6 when a large-scale earthquake occurs, the bolt 6 may slip laterally along the elongated hole 13. In order to prevent this, in this embodiment, after tightening the nut 22, as shown in FIG. . At this time, the plate member 3 is urged toward the flat plate portion 11 of the metal fitting body 2 by the elastic member 5. Therefore, when the fastening member 4 is hammered from the lower surface side of the flat plate part 11 to connect the plate member 3 and the flat plate part 11, the plate member 3 does not float off the flat plate part 11, and the fastening member 4 is connected to the flat plate part 11. 11 to the plate member 3, and it becomes possible to connect them integrally. Further, as described above, by making the thickness of the plate member 3 thinner than that of the flat plate portion 11, there is an advantage that the tip of the fastening member 4 can be easily penetrated through the plate member 3. There is. Thereby, the bolt 6 is fixed so as not to slip in the longitudinal direction of the elongated hole 13. Therefore, the ceiling mounting bracket 1 of this embodiment can maintain the relative positions of the bolts 6 and the support bolts 7 favorably even in the event of a large-scale earthquake.

In this way, the ceiling mounting bracket 1 of this embodiment has a flat plate part 11 in which a long hole 13 into which the bolt 6 can be inserted is formed, and is erected from both ends of the flat plate part 11 with the long hole 13 in between. The metal fitting main body 2 has side wall portions 12, 12 joined to the lower surface of the metal fitting 8. In addition to the metal fitting body 2, the ceiling mounting bracket 1 has an insertion hole 16 through which the bolt 6 can be inserted, and is a plate member that is attached to the flat plate part 11 with the bolt 6 inserted into the insertion hole 16. 3 and a fastening member 4 that fixes the position of the bolt 6 in the longitudinal direction of the elongated hole 13 by fastening the plate member 3 and the flat plate portion 11 to each other. In the ceiling mounting bracket 1 having such a configuration, the position of the bolt 6 can be adjusted by moving the bolt 6 along the longitudinal direction of the elongated hole 13, and once the position of the bolt 6 is determined, the fastening member can be adjusted. 4 to fasten the plate member 3 and the flat plate part 11 to each other, it is possible to fix the bolt 6. For example, in the event of a large-scale earthquake, the fixing position of the bolt 6 may be in the longitudinal direction of the elongated hole 13. It is possible to prevent slipping along the surface.

In addition, in the ceiling mounting bracket 1 as described above, it is the bracket body 2 that is required to have high strength. Therefore, it is preferable that the metal fitting main body 2 is formed using a metal steel material with high hardness such as iron or stainless steel. On the other hand, the plate member 3 is not a member that requires high strength compared to the metal fitting main body 2. Therefore, if the plate member 3 is formed using a relatively soft aluminum alloy or the like, it is possible to improve the workability when screwing the fastening member 4.

Next, FIG. 6 is a diagram showing an example of a structure in which the ceiling mounting bracket 1 of this embodiment supports a ceiling hanging object 200. The ceiling mounting bracket 1 is attached to the upper end of a support device 100 that supports a ceiling hanging object 200. The support device 100 is a device that supports various ceiling hanging objects 200 such as air conditioners, lighting equipment, ducts, and various types of piping while being suspended from a ceiling structure 8 such as a ceiling slab. In FIG. 6, a ceiling-mounted air conditioner is illustrated as an example of the ceiling-hanging object 200.

As shown in FIG. 6, the support device 100 includes a plurality of support bolts 7 (four support bolts 7 in this embodiment) arranged in the vertical direction, and a support device 100 provided at the upper end of each of the plurality of support bolts 7. , a ceiling mounting bracket 1 attached to a ceiling structure 8, a plurality of braces 31 attached diagonally between a pair of mutually adjacent support bolts 7, 7 of the plurality of support bolts 7, and a plurality of braces 31 attached to the lower part of the support bolts 7. A supporting frame 40 to be attached, and a supporting part 50 configured by a plurality of hanging bolts 51 (four hanging bolts 51 in this embodiment) attached vertically downward to the supporting frame 40. This is a configuration that is equipped with. That is, the ceiling mounting bracket 1 attached to the ceiling structure 8 is attached to the upper end of the support device 100.

The plurality of support bolts 7 are arranged at the vertices of a substantially rectangular shape in plan view. Note that the plane in this case is the XY plane (the same applies below). For example, the plurality of support bolts 7 have the same length in the axial direction. A nut 23 is attached in advance to the upper part of each support bolt 7, and the ceiling mounting bracket 1 is further attached to the upper part. Further, a lower end portion of each support bolt 7 is connected to a support frame 40. Therefore, the plurality of support bolts 7 are attached to the support frame 40 so as to stand up from the upper surface of the support frame 40.

Two braces 31 are attached between a pair of adjacent support bolts 7, 7 so as to intersect with each other. These two braces 31 interconnect the upper and lower ends of the pair of support bolts 7,7. Two such braces 31 are arranged on each side of the substantially rectangular shape in plan view where the plurality of support bolts 7 are arranged. Therefore, the plurality of support bolts 7 are interconnected by the plurality of braces 31, and vibrations are suppressed.

For example, brace connecting fittings 32 for connecting the brace 31 are attached to positions near the upper end and lower end of the support bolt 7. The brace connecting fitting 32 is a roughly L-shaped fitting, and the corner portion of the L-shape is fixed to the support bolt 7 . In addition, the brace connecting fitting 32 has a connecting fitting for connecting the brace 31 to each of a pair of connecting pieces extending at right angles to each other from a corner portion, and the connecting fitting connects the tip of the brace 31. This is the configuration to maintain. For example, in the brace connecting fitting 32 shown in FIG. 6, each of the pair of connecting pieces is configured to sandwich and hold the outer peripheral portion of the brace 31. However, the brace connecting fittings 32 are not necessarily limited to those that sandwich and hold the outer peripheral portion of the brace 31. The above-mentioned brace connecting fittings 32 are attached to positions near the upper end and near the lower end of each support bolt 7 arranged at the apex position of the substantially rectangular shape in plan view, and are arranged so as to intersect between the pair of support bolts 7, 7. The upper and lower ends of each of the two braces 31 are held.

Further, at the intersection where the two braces 31, 31 intersect between the pair of support bolts 7, 7, a cross connection fitting 33 for interconnecting the two braces 31, 31 is attached. This cross-connection fitting 33 is a metal fitting that holds the intersection of the braces 31, 31 by sandwiching it between two plate members formed in, for example, a disk shape. For example, each of the two plate members is provided with an enclosing part that is bent so as to be able to enclose the outer periphery of the brace 31 along the axial direction of the brace 31. Since the intersecting angle between the two braces 31, 31 is not constant, the angle formed by each enclosing part of the intersecting metal fitting 33 can be adjusted as appropriate by loosening the bolt attached to the center of each plate member. It is possible. Then, the bolts are tightened with the surrounding portions provided on each of the two plate members surrounding the outer peripheries of the two braces 31, 31, so that the cross-connecting metal fittings 33 are connected to the two braces 31, 31. Connect the intersections of the two in a strong state.

The support portion 50 is constituted by a plurality of hanging bolts 51 hanging down from the support frame 40 . The hanging bolts 51 are attached in the vertical direction to the support frame 40 so as to be able to support, for example, the four corners of the ceiling hanging object 200. By attaching the ceiling hanging object 200 to the lower end of each hanging bolt 51, the support section 50 can support the ceiling hanging object 200 in a suspended state.

The support frame 40 is configured by assembling a plurality of frame members 41 into a substantially rectangular shape in plan view, and connects the support bolt 7 and the suspension bolt 51. In the present embodiment, the two frame members 41, 41 arranged along the X direction and the two frame members 41, 41 arranged along the Y direction are assembled in a parallel cross shape, thereby providing support. A frame body 40 is configured. In the example of FIG. 6, a case is assumed in which two frame members 41, 41 arranged along the Y direction are assembled to the lower sides of two frame members 41, 41 arranged along the X direction. Illustrated.

The frame member 41 constituting the support frame 40 is constructed by combining a pair of steel materials, such as lip channel steel or light channel steel, and has a slit formed between the pair of steel materials. This slit is formed from one end of the frame member 41 in the longitudinal direction to the other end, and passes through the frame member 41 vertically.

The lower end portion of the support bolt 7 is attached to the upper frame member 41 of the four frame members 41 that constitute the support frame 40 . That is, the lower end portion of the support bolt 7 is inserted into the slit of the upper frame member 41, and is attached to the frame member 41 by tightening nuts at the upper and lower portions with the frame member 41 in between. The attachment position of the lower end of the support bolt 7 can be adjusted along the slit of the upper frame member 41. That is, the support bolt 7 can be attached to any position in the longitudinal direction (X direction) of the upper frame member 41.

The upper end portion of the hanging bolt 51 is attached to the lower frame member 41 of the four frame members 41 that constitute the support frame 40 . That is, the upper end of the hanging bolt 51 is inserted into a slit in the lower frame member 41, and nuts are tightened to the upper and lower parts of the frame member 41 with the frame member 41 in between, thereby attaching it to the frame member 41. The mounting position of the upper end of the hanging bolt 51 can be adjusted along the slit of the lower frame member 41. That is, the hanging bolt 51 can be attached to any position in the longitudinal direction (Y direction) of the lower frame member 41.

The support device 100 is attached to the ceiling hanging object 200 as described above. The support device 100 can be attached to the ceiling hanging object 200 by, for example, a worker working on the floor. Therefore, the operator can efficiently perform tasks such as arranging the brace 31 between the pair of support bolts 7, 7 adjacent to each other. After attaching the support device 100 to the ceiling suspended object 200, the worker uses a lifting device or the like to lift the ceiling suspended object 200 with the support device 100 assembled to the vicinity of the installation position of the ceiling structure 8. A ceiling mounting bracket 1 provided at the upper end of the support device 100 is connected and fixed to a bolt 6 hanging from a ceiling structure 8. At this time, by temporarily tightening the nuts 22 and 23, the relative position of the bolt 6 and the support bolt 7 can be easily adjusted by relatively displacing the position and posture of the ceiling mounting bracket 1 with respect to the bolt 6. can. Therefore, the operator can attach the ceiling mount 1 to an appropriate position while adjusting the position of the support bolt 7 with respect to the bolt 6 while the ceiling mount 1 is temporarily fixed to the ceiling structure 8.

When the position adjustment of the support bolt 7 with respect to the bolt 6 is completed, the operator integrally connects the flat plate part 11 of the ceiling mounting bracket 1 and the plate member 3 using the fastening member 4, so that the bolt 6 is connected to the elongated hole 1 Secure it to prevent it from sliding along its length. With the above, construction of the ceiling hanging object 200 is completed.

In addition, although the case where the support apparatus 100 which supports the ceiling suspended object 200 is provided with the support frame body 40 was illustrated above, it is not restricted to this. That is, the support device 100 may be configured without the support frame 40. For example, the lower end of the support bolt 7 may be connected to the ceiling hanging object 200.

(Second embodiment)
Next, a second embodiment of the present invention will be described. FIG. 7 is a diagram showing an example of the configuration of the ceiling mounting bracket 1 in the second embodiment. As shown in FIG. 7(a), the ceiling mounting bracket 1 of this embodiment engages with the inside of a pair of side wall portions 12, 12 that stand upright from both ends of the flat plate portion 11 of the bracket body 2 in parallel to each other. A portion 12b is provided. The engaging portion 12b is provided corresponding to a portion of the flat plate portion 11 where the elongated hole 13 is formed. The engaging portion 12b is formed by protruding the inner surface of the side wall portion 12 toward the inner side where the elongated hole 13 is formed, and is provided along the longitudinal direction of the elongated hole 13. The engaging portion 12b is for creating a certain gap between the lower surface of the engaging portion 12b and the flat plate portion 11. This gap is formed to be larger than the thickness of the plate member 3. Therefore, the plate member 3 can be inserted between the engaging portion 12b and the flat plate portion 11 from one end of the ceiling mounting bracket 1, as shown in FIG. 7(a).

FIG. 7(b) is a side view of the ceiling mounting bracket 1 showing a state in which the plate member 3 is inserted between the engaging portion 12b and the flat plate portion 11. As shown in FIG. 7(b), in the ceiling mounting bracket 1 of this embodiment, the plate member 3 is attached to the flat plate part 11 by inserting the plate member 3 between the engaging part 12b and the flat plate part 11. can do. When the plate member 3 is attached to the flat plate part 11, both end portions of the plate member 3 are inserted between the engaging part 12b and the flat plate part 11. In this state, when the plate member 3 and the flat plate part 11 are not coupled by the fastening member 4, the plate member 3 is slidable in the longitudinal direction of the elongated hole 13. Therefore, the position of the bolt 6 can be adjusted along the longitudinal direction of the elongated hole 13 while the bolt 6 is inserted into the insertion hole 16 of the plate member 3 and the elongated hole 13 of the flat plate portion 11.

FIG. 8 is a diagram showing a state in which the bolt 6 and the support bolt 7 are connected using the ceiling mounting bracket 1. As shown in FIG. Similar to the first embodiment, in the ceiling mounting bracket 1 of this embodiment, once the relative positional relationship between the bolt 6 and the support bolt 7 is determined, the fastening member 4 is screwed into the flat plate part 11 from the lower surface side. 11 and the plate member 3 can be combined. At this time, since the end of the plate member 3 engages with the engaging portion 12b, it is possible to prevent the plate member 3 from floating away from the flat plate portion 11 during the process of screwing the fastening member 4 into the fastening hole 15. This allows the fastening member 4 to be reliably screwed into the plate member 3. As a result, as shown in FIG. 8, the fastening member 4 can be constructed in such a state that its tip end passes through the plate member 3, and the plate member 3 and the flat plate portion 11 can be integrally coupled. Therefore, the ceiling mounting bracket 1 of this embodiment has the advantage that the plate member 3 and the flat plate part 11 can be connected to each other without providing the elastic member 5 as in the first embodiment, so that the number of parts can be reduced. There is.

Note that this embodiment is the same as that described in the first embodiment except for the points mentioned above.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 9 is a diagram showing an example of the configuration of the ceiling mounting bracket 1 in the third embodiment. As shown in FIG. 9, the ceiling mount 1 of this embodiment has a plate member 3 in place of the washer 21 described in the first embodiment. That is, the ceiling mounting bracket 1 of this embodiment has a configuration in which the plate member 3 is attached to the lower surface side of the flat plate part 11 of the metal fitting body 2, and the plate member 3 is arranged between the flat plate part 11 and the nut 22. Ru.

Furthermore, the plate member 3 of this embodiment is provided with a fastening hole 3a at least at one location, through which the fastening member 4 is inserted. In addition, FIG. 9 illustrates a case where fastening holes 3a are provided at two locations in the plate member 3. This fastening hole 3a is formed so as to correspond to a position in the flat plate portion 11 where the elongated hole 13 does not exist. On the other hand, the flat plate portion 11 of the metal fitting body 2 does not need to be provided with the fastening hole 15 described in the first embodiment.

When attaching the ceiling mounting bracket 1 configured as described above to the ceiling structure 8, as shown in FIG. After the plate member 3 is attached to the tip of the bolt 6 projecting downward, the nut 22 is attached. If the nut 22 is temporarily tightened, the relative position between the bolt 6 and the support bolt 7 can be easily adjusted as described above. Once the relative positions of the bolts 6 and the support bolts 7 are determined, the ceiling mounting bracket 1 can be fixed to the ceiling structure 8 by tightly tightening the nuts 22. When the ceiling mounting bracket 1 is fixed to the ceiling structure 8, the plate member 3 and the flat plate part 11 can be integrally connected by screwing the fastening member 4 into the fastening hole 3a of the plate member 3. can.

Incidentally, FIG. 9 illustrates an example in which the plate member 3 is formed as a flat member. If the plate member 3 is a flat member, there is a possibility that the plate member 3 rotates when the nut 22 is tightened, resulting in displacement of the fastening hole 3a. In order to prevent this, for example, the plate member 3 is formed into a roughly U-shape, and engaging portions are provided at both ends of the plate member 3 to engage with the outer surfaces of the pair of side walls 12, 12 of the metal fitting main body 2. The provided configuration may also be adopted. By providing the engaging portions at both ends of the plate member 3, it is possible to prevent the plate member 3 from rotating together when the nut 22 is tightened, and it is possible to prevent the position of the fastening hole 3a from shifting.

Note that this embodiment is the same as that described in the first embodiment except for the points mentioned above.

(Modified example)
Although several embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above. That is, the present invention can be applied with various modifications other than the configurations described in each of the above embodiments.

For example, in the first embodiment, a coil spring is used as the elastic member 5. However, the elastic member 5 is not limited to a coil spring. For example, the elastic member 5 may be a cylindrical member formed using an elastic body such as rubber as a base material.

Further, in each of the above embodiments, the case where the ceiling mounting bracket 1 is provided with a long hole 13 for inserting the bolt 6 and a mounting hole 14 for mounting the support bolt 7 is illustrated as an example. It is not limited to. That is, the flat plate portion 11 of the metal fitting main body 2 may be formed with one long hole 13 in which the above-mentioned long hole 13 and the attachment hole 14 are integrated.

DESCRIPTION OF SYMBOLS 1... Ceiling mounting bracket, 2... Bracket main body, 3... Plate member, 4... Fastening member, 5... Elastic member, 6... Bolt, 7... Support bolt, 11... Flat plate part, 12... Side wall part, 13... Long hole, 14...Mounting hole.

Claims (5)

A ceiling mounting bracket that is attached to a bolt hanging from a ceiling structure and connected to the lower surface of the ceiling structure,
a metal fitting main body having a flat plate portion in which a long hole through which the bolt can be inserted is formed; and side wall portions that stand up from both ends of the flat plate portion across the long hole and are joined to the lower surface of the ceiling structure;
a plate member having an insertion hole through which the bolt can be inserted, and attached to the flat plate portion with the bolt inserted into the insertion hole;
a fastening member that fixes the position of the bolt with respect to the longitudinal direction of the long hole by fastening the plate member and the flat plate part to each other at a position different from the long hole;
A ceiling mounting bracket characterized by comprising: an elastic member attached to the outer peripheral surface of the bolt, the upper end of which is joined to the lower surface of the ceiling structure;
further comprising;
The plate member is arranged on the upper surface side of the flat plate part, and is pressed against the flat plate part by the urging force of the elastic member,
The ceiling mount according to claim 1, wherein the fastening member is fastened by penetrating both the flat plate part and the plate member from the lower surface side of the flat plate part. 3. The ceiling mounting bracket according to claim 2, wherein a fastening hole for embedding the fastening member along a peripheral edge of the elongated hole is formed on the lower surface side of the flat plate part. The plate member is arranged on the lower surface side of the flat plate part,
The ceiling mount according to claim 1, wherein the fastening member is fastened by penetrating both the plate member and the flat plate portion from the lower surface side of the plate member. The ceiling mount according to any one of claims 1 to 4, wherein the flat plate part is further provided with a mounting hole in the vicinity of the elongated hole for mounting a support bolt for supporting an object suspended from the ceiling. Metal fittings.

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