JP6325587B2 - Ceiling member for renewal - Google Patents

Description

  The present invention relates to a renewal ceiling member.

  2. Description of the Related Art Conventionally, a ceiling member used for renewal work in which an indoor unit of an existing air conditioner suspended from a ceiling is removed and replaced with a new indoor unit is known. This ceiling suspension member has a structure in which four angle members are assembled to a quadrangular frame body, ceiling suspension bolts are respectively fixed to two parallel angle members, and the remaining two angle members The indoor unit is fixed to the door. Examples of such a ceiling member are disclosed in Patent Documents 1 and 2 below.

  In the following Patent Document 1, four rectangular angle members are assembled to a well-shaped frame by fixing brackets, and each angle member has a hole for adjusting the pitch between the angle members. A member is disclosed. Similarly, Patent Literature 2 below discloses a ceiling suspension member in which four angle members are assembled to a frame, and two angle members to which an indoor unit is fixed are fixed to a suspension bolt 2. It is arranged on the angle member of the book.

JP-A-5-180462 JP 2004-301187 A

  In the ceiling suspension member disclosed in Patent Document 1, first, two angle members are fixed to the ceiling suspension bolt on the back of the ceiling, and then the remaining two angle members are first connected by a connecting member such as a screw. It is fixed to the two angle members fixed to the suspension bolt. Therefore, the operator needs to adjust the connecting member and perform the fixing operation of the angle member in a state where the angle member is suspended from the ceiling. Such work at a high place behind the ceiling is poor in workability, and there is a great concern that the connecting member may be accidentally detached from the angle member and dropped and lost. Further, in the ceiling member disclosed in Patent Document 2, the angle member to which the indoor unit is fixed is disposed on the angle member to be fixed to the suspension bolt, so that the load applied to the lower angle member is large. Therefore, there is a problem that the member is easily damaged.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a renewal ceiling suspension that can prevent the loss of a member that connects the angle members and can prevent the angle members from being damaged. It is to provide a member.

  An updating ceiling suspension member (1) according to one aspect of the present invention includes a first angle member (10) fixed to a ceiling suspension bolt (3), and an upper surface (11) of the first angle member (10). The second angle member (20) to which the indoor unit (4) is fixed, and the first end portion (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30) extending from the upper surface (11) of the angle member (10) to the second angle member (20) side, and attached to the tip portion (31A), together with the connecting member (30), the first and A fastening member (40) for fastening the second angle members (10, 20) in the overlapping direction. The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided.

  In the update ceiling member (1), the connecting member (30) is disposed so that the tip end (31A) protrudes from the upper surface (21) of the second angle member (20), and the tip end (31A) is connected to the tip end (31A). The first and second angle members (10, 20) are connected to each other by attaching the tightening member (40). The first angle member (10) includes a drop prevention portion (11B) for maintaining a state in which the distal end portion (31A) of the connecting member (30) protrudes from the upper surface (21) of the second angle member (20). ) Is provided. Therefore, even when the fastening member (40) is accidentally detached from the connecting member (30) during the operation, the tip end portion (31A) of the connecting member (30) is moved to the second angle member (11B) by the fall prevention portion (11B). 20) protrudes from the upper surface (21), and the fastening member (40) rests on the upper surface (21). Therefore, it is possible to prevent the connection member (30) and the tightening member (40) from being lost during the work.

  Moreover, in the said ceiling suspension member (1), since the 2nd angle member (20) to which an indoor unit (4) is fixed is arrange | positioned in the upper surface (11) of a 1st angle member (10), the said 1st The load applied to the one angle member (10) is increased. In contrast, in the above-described renewal suspension member (1), the connecting member (30) does not penetrate from the lower surface (12) to the upper surface (11) of the first angle member (10), and the first angle member ( Since the second angle member (20) side extends from the upper surface (11) of 10), the rigidity of the first angle member (10) can be further increased. Therefore, damage to the first angle member (10) can be prevented.

  Here, the “ceiling member for renewal” is used for renewal work in which the indoor unit of the existing air conditioner hung from the ceiling is removed and replaced with a new indoor unit. It can also be used for construction where a new indoor unit is installed on a ceiling that is not installed.

  In the above-described ceiling member for update (1), a rail groove (15) that is recessed toward the lower surface (12) may be provided on the upper surface (11) of the first angle member (10). The fall prevention part (11B) may be configured by a surface connecting both ends (15A, 15B) of the rail groove (15). Here, the “surface connecting both ends of the rail groove (15)” is a continuous surface in which no holes or cuts are formed.

  Thereby, compared with the case where a fall prevention part (11B) is comprised by the surface in which the hole and the cut | interruption were formed, the rigidity of a 1st angle member (10) can be improved more, and a 1st angle member (10) Can be more reliably prevented.

  In the above-described ceiling suspension member (1), the first angle member (10) may have a shape extending in one direction. The rail groove (15) may be provided along the longitudinal direction so as to slide the second angle member (20).

  Thereby, the position of the second angle member (20) in the longitudinal direction can be easily adjusted by sliding the second angle member (20) along the rail groove (15).

  In the above-described ceiling suspension member (1), the second angle member (20) may have a shape extending in one direction. The second angle member (20) may be provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction.

  Thus, the first angle member (10) is slid along the holes (21A, 22A) in a state where the connecting member (30) is inserted into the holes (21A, 22A) of the second angle member (20). And the position of the first angle member (10) can be easily adjusted.

An updating ceiling suspension member (1) according to another aspect of the present invention includes a first angle member (10) fixed to a ceiling suspension bolt (3), and an upper surface (11) of the first angle member (10). The second angle member (20) to which the indoor unit (4) is fixed, and the first end portion (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30) extending from the upper surface (11) of the angle member (10) to the second angle member (20) side, and attached to the tip portion (31A), together with the connecting member (30), the first and A fastening member (40) for fastening the second angle members (10, 20) in the overlapping direction. The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided. The second angle member (20) has a shape extending in one direction. The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction. The second angle member (20) has an upper surface (21) and a lower surface (22) in which the holes (21A, 22A) are formed, and a side surface (23) connecting the upper surface (21) and the lower surface (22). ) and, that it has a hollow portion is provided surrounded by. Wherein said bore (21A, 22A) in the hollow portion outside the can, the upper surface (21) and said lower surface (22) and the wall portion so as to connect (24) that is provided.

  Thereby, the intensity | strength of the up-down direction of a 2nd angle member (20) can be raised more. Further, by providing the wall portion (24) outside the holes (21A, 22A), interference between the connecting member (30) inserted into the holes (21A, 22A) and the wall portion (24) can be prevented. .

An updating ceiling suspension member (1) according to still another aspect of the present invention includes a first angle member (10) fixed to a ceiling suspension bolt (3), and an upper surface of the first angle member (10) ( 11), the second angle member (20) to which the indoor unit (4) is fixed, and the tip (31A) projecting from the upper surface (21) of the second angle member (20). A connecting member (30) extending from the upper surface (11) of the first angle member (10) to the second angle member (20) side, and attached to the tip (31A), together with the connecting member (30), the first A fastening member (40) for fastening the first and second angle members (10, 20) in the overlapping direction. The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided. The second angle member (20) has a shape extending in one direction. The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction. The connecting member (30) is inserted into the hole (22A) formed in the lower surface (22) of the second angle member (20), and has a pair of surfaces parallel to the end surface of the hole (22A). that it has a root portion of the polygonal (32) including.

  Thereby, it connects so that rotation of a 1st and 2nd angle member (10, 20) may be prevented, and the connection angle of a 1st and 2nd angle member (10, 20) can be fixed easily.

  In the above-described renewal suspension member (1), the first angle member (10) and the second angle member (20) have the root portion (32) at the bottom surface (22) of the second angle member (20). ) May be fixed perpendicularly to each other by being inserted into the hole (22A) formed in the above.

  Thereby, the 1st and 2nd angle member (10, 20) can be easily assembled | attached to a rectangular or square frame so that the external shape of an indoor unit (4) may be met.

An updating ceiling suspension member (1) according to still another aspect of the present invention includes a first angle member (10) fixed to a ceiling suspension bolt (3), and an upper surface of the first angle member (10) ( 11), the second angle member (20) to which the indoor unit (4) is fixed, and the tip (31A) projecting from the upper surface (21) of the second angle member (20). A connecting member (30) extending from the upper surface (11) of the first angle member (10) to the second angle member (20) side, and attached to the tip (31A), together with the connecting member (30), the first And a fastening member (40) for fastening the first and second angle members (10, 20) in the overlapping direction. The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided. The second angle member (20) has a shape extending in one direction. The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction. The second angle member (20) is positioned so as to separate the pair of connection member insertion portions (20A) in which the holes (21A, 22A) are formed and the pair of connection member insertion portions (20A). and the box portion constituted by the outer peripheral wall and (20B), that contain.

  Thereby, the intensity | strength of a 2nd angle member (20) can be raised more compared with the case where a hole (21A, 22A) is formed in the upper and lower surfaces (21, 22) in the 2nd angle member (20) whole. .

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent the loss of the member which connects an angle member, the ceiling suspension member for an update which can prevent damage to an angle member can be provided.

It is a figure which shows the structure of the ceiling suspension member for update which concerns on Embodiment 1 of this invention. It is an enlarged view in the area | region II in FIG. It is the figure which looked at the lower angle member which comprises the said suspension member for an update from the longitudinal direction. It is an enlarged view in the area | region IV in FIG. It is the figure which looked at the upper side angle member which comprises the said suspension member for an update from the longitudinal direction. It is a figure which shows the structure of the connection bolt which comprises the said ceiling suspension member for an update. It is a figure for demonstrating the fall prevention mechanism of the connecting bolt in the said ceiling suspension member for an update. It is a figure which shows the state by which the said ceiling suspension member for an update was folded. It is a figure which shows the half-opened state of the said suspension member for an update. It is a figure which shows the state by which the said ceiling suspension member for an update was opened. It is a figure which shows the state by which the said ceiling suspension member for update was fixed to the suspension bolt of the ceiling. It is a figure which shows the state by which the indoor unit was fixed to the said suspension member for an update. It is a figure which shows the structure of the ceiling suspension member for update which concerns on Embodiment 2 of this invention. It is a figure which shows the state before fixation of the said suspension member for an update in the area | regions XIV and XV in FIG. It is a figure which shows the state after fixation of the said suspension member for an update in the area | regions XIV and XV in FIG. It is the figure which looked at the lower angle member from the longitudinal direction. It is the figure which looked at the upper side angle member from the longitudinal direction. It is a figure which shows the fall prevention mechanism of the connection bolt in the said ceiling suspension member for an update.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Embodiment 1>
(Structure of the ceiling member for renewal)
First, the structure of the renewal suspension member 1 according to the first embodiment of the present invention will be described.

  As shown in FIG. 1, the renewal ceiling suspension member 1 is used for renewal work in which an indoor unit of an existing air conditioner suspended from a ceiling is removed and replaced with a new indoor unit. The rod-shaped angle members 10 and 20 are connected in a rectangular (rectangular) frame shape. The renewal ceiling suspension member 1 includes two parallel lower angle members 10 (first angle members) fixed to the suspension bolts on the ceiling and two parallel upper angle members 20 (fixed to the indoor unit). A second angle member), four connecting bolts 30 (connecting members) and nuts 40 (tightening members) for connecting the upper angle member 20 and the lower angle member 10, and four lifting tools 50. .

  The upper and lower angle members 20 and 10 are constrained in a state where they are overlapped with each other by a connecting bolt 30 extending toward the upper angle member 20 and a nut 40 attached to the tip portion thereof. In addition, the suspension tool 50 is attached to both ends of the lower angle member 10, and is attached to the angle fixing portion 51 having a rectangular shape surrounding the outer periphery of the lower angle member 10, and the ceiling fixing bolt. And a bolt fixing portion 52 to which is fixed.

[Lower angle member]
FIG. 2 is an enlarged view of region II in FIG. FIG. 3 shows a state when the lower angle member 10 is viewed from the longitudinal direction. The lower angle member 10 is formed by extrusion molding of aluminum and has a cylindrical shape extending in one direction. The lower angle member 10 includes an angle main body portion 17 having a horizontally long rectangular shape when viewed from the longitudinal direction, and an angle reinforcing portion 16 extending horizontally from four corners of the angle main body portion 17.

  The angle main body 17 has an upper surface 11. The upper surface 11 has a pair of first upper surfaces 11A extending horizontally and a U-shaped second upper surface 11B connected to the first upper surface 11A and recessed toward the lower surface 12 side. The second upper surface 11B has a pair of vertical surfaces 11C connected to the end portions of the first upper surface 11A and extending toward the lower surface 12 side, and a horizontal surface 11D connecting the ends of the pair of vertical surfaces 11C. An extending surface 11AA is provided on the first upper surface 11A on the inner side of the connecting portion with the vertical surface 11C. A gap is formed between the extended surfaces 11AA, and the connecting bolt 30 is inserted into the gap.

  As shown in FIG. 3, the extending surface 11AA is in contact with the inner surface of the angle fixing portion 51 by protruding upward from the first upper surface 11A. Further, an upper rib 11AB is provided at the end of the first upper surface 11A opposite to the extending surface 11AA, and the upper rib 11AB is in contact with the inner surface by protruding upward from the first upper surface 11A. . As a result, as shown in FIG. 3, a gap is formed between the first upper surface 11 </ b> A and the inner surface of the angle fixing portion 51, and the friction when the suspension tool 50 is slid along the longitudinal direction of the lower angle member 10. Can be reduced.

  The upper surface 11 is provided with a rail groove 15 that is recessed toward the lower surface 12. Both ends 15A and 15B of the rail groove 15 are connected by the second upper surface 11B (the vertical surface 11C and the horizontal surface 11D), and are partitioned from the hollow portion 14 by the second upper surface 11B. As shown in FIG. 3, the opening of the rail groove 15 is partially blocked by the extending surface 11AA. As shown in FIG. 1, the rail groove 15 is provided along the longitudinal direction so as to extend from one end of the lower angle member 10 to the other end. By this rail groove 15, the connecting bolt 30 (upper angle member 20) arranged on the upper surface 11 can be slid along the longitudinal direction.

  As shown in FIG. 3, the horizontal surface 11 </ b> D is provided below the head 33 of the connection bolt 30 so as to face the head 33 of the connection bolt 30 in the vertical direction. For this reason, when the connecting bolt 30 falls, the head 33 comes into contact with the horizontal surface 11D, and the connecting bolt 30 can be prevented from dropping. That is, in the present embodiment, the second upper surface 11B including the horizontal surface 11D functions as a fall prevention unit that prevents the connection bolt 30 from dropping. Further, the second upper surface 11B (the vertical surface 11C and the horizontal surface 11D) is a continuous surface in which no hole or cut is formed from the viewpoint of increasing the rigidity of the lower angle member 10.

  The angle main body 17 has a lower surface 12. The lower surface 12 includes a pair of first lower surfaces 12A extending horizontally, and a U-shaped second lower surface 12B connected to the first lower surface 12A and recessed toward the upper surface 11 side. The second lower surface 12B has a pair of vertical surfaces 12C connected to the first lower surface 12A and extending toward the upper surface 11 side, and a horizontal surface 12D connecting the ends of the pair of vertical surfaces 12C. An extending surface 12AA is provided on the first lower surface 12A on the inner side of the connecting portion with the vertical surface 12C. A gap is formed between the extended surfaces 12AA, and a screw portion of a fixing bolt 60 for fixing the lower angle member 10 and the hanging tool 50 to each other is inserted into the gap.

  As shown in FIG. 3, the extended surface 12AA is in contact with the inner surface of the angle fixing portion 51 by projecting downward from the first lower surface 12A. Further, a lower rib 12AB is provided at the end of the first lower surface 12A opposite to the extending surface 12AA, and the lower rib 12AB contacts the inner surface by protruding downward from the first lower surface 12A. ing. As a result, as shown in FIG. 3, a gap is formed between the first lower surface 12 </ b> A and the inner surface of the angle fixing portion 51, and the friction when the suspension tool 50 is slid along the longitudinal direction of the lower angle member 10. Can be reduced.

  The angle main body 17 is a substantially quadrangular prism-shaped member having a pair of side surfaces 13 that connect both ends of the upper and lower surfaces 11, 12 and having a hollow portion 14 surrounded by the upper surface 11, the lower surface 12, and the side surfaces 13. The outer peripheral surface (the first and second upper surfaces 11A and 11B, the first and second lower surfaces 12A and 12B, and the side surface 13) of the angle main body 17 is a continuous surface in which no holes or cuts are formed. ing.

  The angle reinforcing portion 16 is a portion extending outward from the outer surface of the angle main body portion 17 in order to improve the strength of the lower angle member 10, and is integrally formed with the angle main body portion 17. The angle reinforcing portion 16 is formed from one end portion in the longitudinal direction to the other end portion in the lower angle member 10. As shown in FIG. 3, the angle reinforcing portion 16 includes first to fourth angle reinforcing portions 61 to 64 provided at the four corners of the angle main body portion 17.

  The first angle reinforcing portion 61 extends horizontally from the connecting portion between the upper surface 11 and the one side surface 13. As shown in FIG. 2, the longitudinal end portion of the first angle reinforcing portion 61 is cut and bent downward, and the bent portion is removed from the lower angle member 10 so that the lifting tool 50 can be removed. The first stopper portion 61A is for prevention. More specifically, the hooked portion 91 </ b> A provided on the inner surface of the angle fixing portion 51 comes into contact with the first stopper portion 61 </ b> A, thereby preventing the suspension tool 50 from coming off.

  The second to fourth angle reinforcing portions 62 to 64 also have the same structure as the first angle reinforcing portion 61 as described below. The second angle reinforcing portion 62 extends horizontally from the connecting portion between the upper surface 11 and the other side surface 13, and both end portions in the longitudinal direction are cut and bent downward to constitute the first stopper portion 62 </ b> A. doing. The third angle reinforcing portion 63 extends horizontally from the connecting portion between the lower surface 12 and the one side surface 13 so as to be parallel to the first angle reinforcing portion 61. Then, both end portions in the longitudinal direction of the third angle reinforcing portion 63 are cut and bent upward to constitute the first stopper portion 63A. The fourth angle reinforcing portion 64 extends horizontally from the connecting portion between the lower surface 12 and the other side surface 13 so as to be parallel to the second angle reinforcing portion 62. And both the ends of the longitudinal direction of the 4th angle reinforcement part 64 are cut | disconnected and bent upwards, and the 1st stopper part 64A is comprised. In addition, the first stopper portions 62A to 64A also function as a mechanism for preventing the lifting device 50 from coming off by contacting the locked portions 92A to 94A provided on the inner surface of the angle fixing portion 51.

[Upper angle member]
FIG. 4 is an enlarged view of a region IV in FIG. FIG. 5 shows a state when the upper angle member 20 is viewed from the longitudinal direction. The upper angle member 20 is formed by extrusion molding of aluminum like the lower angle member 10 and has a cylindrical shape extending in one direction. The upper angle member 20 is shorter than the lower angle member 10. The upper angle member 20 includes an angle main body portion 27 having a horizontally long rectangular shape when viewed from the longitudinal direction, and an angle reinforcing portion 25 extending horizontally from four corners of the angle main body portion 27.

  The angle main body 27 has an upper surface 21, a lower surface 22, and a pair of side surfaces 23 that connect them. The angle main body 27 is a substantially quadrangular prism-shaped member having a hollow portion surrounded by the upper surface 21, the lower surface 22 and the side surface 23, and is disposed on the upper surface 11 of the lower angle member 10 on the lower surface 22.

  As shown in FIG. 1, the upper angle member 20 separates the pair of connection member insertion portions 20 </ b> A from the pair of connection member insertion portions 20 </ b> A in which holes 21 </ b> A into which the connection bolts 30 are inserted are formed on the upper surface 21 and the lower surface. And the box body portion 20B positioned as described above, and are configured to be continuously connected. The connecting member insertion portions 20A are located at both ends in the longitudinal direction, and the box portion 20B is located at the approximate center in the longitudinal direction. Unlike the connecting member insertion portion 20A, the box body portion 20B is not formed with holes 21A on the upper surface 21 and the lower surface, and is constituted by a closed outer peripheral wall continuous in the circumferential direction. Is also more rigid. As shown in FIG. 1, the hole 21 </ b> A has a rectangular shape along the longitudinal direction of the upper angle member 20, and is formed at the approximate center in the width direction. Although the hole 22A formed on the lower surface is not shown in FIG. 1, the hole 22A is substantially the same size as the hole 21A formed on the upper surface 21, and is formed at a position directly below the hole 21A. .

  The angle main body 27 has a pair of wall portions 24 that extend in a direction perpendicular to the upper surface 21 and the lower surface 22 in the hollow portion and connect the upper surface 21 and the lower surface 22. The wall portion 24 is constituted by a flat plate and is provided outside the holes 21A and 22A as shown in FIG. The wall portion 24 increases the vertical strength of the upper angle member 20 and partitions the insertion space 28 into which the connecting bolt 30 is inserted and the hollow spaces 29 located on both sides thereof. The wall portion 24 is provided over the entire length direction from one end to the other end of the upper angle member 20.

  Similarly to the case of the lower angle member 10, the angle reinforcing portion 25 is a portion for improving the strength of the upper angle member 20, and extends in the horizontal direction from the four corners of the angle main body portion 27. The angle reinforcing portion 25 is formed integrally with the angle main body portion 27 and is formed from one end portion in the longitudinal direction to the other end portion. The angle reinforcing portion 25 includes first to fourth angle reinforcing portions 71 to 74 provided at the four corners of the angle main body portion 27.

  The first angle reinforcing portion 71 extends horizontally from the connecting portion between the upper surface 21 and the one side surface 23. The second angle reinforcing portion 72 extends horizontally from the connecting portion between the upper surface 21 and the other side surface 23 (in the direction opposite to the first angle reinforcing portion 71). The third angle reinforcing portion 73 is horizontally extended from the connecting portion between the lower surface 22 and the one side surface 23 so as to be parallel to the first angle reinforcing portion 71, and is disposed on the upper surface 11 of the lower angle member 10. Has been. The fourth angle reinforcing portion 74 extends horizontally (in the opposite direction to the third angle reinforcing portion 73) from the connection portion between the lower surface 22 and the other side surface 23 so as to be parallel to the second angle reinforcing portion 72. And disposed on the upper surface 11 of the lower angle member 10.

[Connection bolt]
The connecting bolt 30 connects the upper and lower angle members 20 and 10 together with the nut 40 by tightening them in the vertical direction. The connecting bolt 30 is provided with a columnar main body 31 including the tip 31A, a square base 32 connected to the main body 31, and connected to the root 32 and on the opposite side of the tip 31A. A head 33.

  The main body 31 has a smaller diameter than the holes 21A and 22A formed in the upper and lower surfaces 21 and 22 of the upper angle member 20, and penetrates the upper angle member 20 in the vertical direction as shown in FIG. On the outer peripheral surface of the main body portion 31, a male screw portion that fits into the nut 40 is formed. The root portion 32 has a polygonal shape including a pair of surfaces parallel to the end surface of the hole 22A. More specifically, as shown in FIG. 6, the outer shape of the root portion 32 when the connecting bolt 30 is viewed from the axial direction is a quadrangle, and the diameter is smaller than the hole 22 </ b> A formed in the lower surface 22 of the upper angle member 20. Have The head portion 33 has a larger diameter than the main body portion 31 and the root portion 32. The root portion 32 is not limited to a rectangular shape, and may be another polygonal shape such as a hexagonal shape or an octagonal shape including a surface parallel to the end surface of the hole 22A.

  The connecting bolt 30 is disposed so as to extend from the upper surface 11 of the lower angle member 10 to the upper angle member 20 side so that the tip 31A protrudes from the upper surface 21 of the upper angle member 20. More specifically, the head 33 is in contact with the extending surface 11AA of the lower angle member 10 (FIG. 3), and the root portion 32 is inserted into a hole 22A formed in the lower surface 22 of the upper angle member 20 (FIG. 5) The main body 31 passes through the upper and lower surfaces 21, 22 of the upper angle member 20, and the tip 31A protrudes upward from the upper surface 21 (FIGS. 3 and 5). A nut 40 is attached to the tip 31A protruding from the upper surface 21. In the present embodiment, since the upper angle member 20 having a large weight to which the indoor unit is fixed is arranged on the lower angle member 10, the load applied to the lower angle member 10 is large. For this reason, in this embodiment, the rigidity of the lower angle member 10 can be made higher by arranging the connecting bolt 30 so as not to penetrate the upper and lower surfaces 11 and 12 of the lower angle member 10.

  As shown in FIG. 3, the length L1 of the connecting bolt 30 (the distance from the head 33 to the tip 31A) is the height between the upper surface 21 of the upper angle member 20 and the horizontal surface 11D of the lower angle member 10. It is larger than the distance H1. For this reason, in this embodiment, as shown in FIG. 7, even when the head portion 33 of the connecting bolt 30 is in contact with the horizontal surface 11D, the state in which the tip portion 31A protrudes upward from the upper surface 21 is maintained. At this time, the root portion 32 exits from the hole 22A and is positioned in the rail groove 15. In other words, in the present embodiment, the second upper surface 11B including the horizontal surface 11D is prevented from dropping the connection bolt 30 so that the tip end portion 31A is protruded upward from the upper surface 21 of the upper angle member 20. It functions as a part. Therefore, even when the nut 40 is detached from the connection bolt 30 during the operation, the horizontal surface 11D can be supported as a receiving surface so that the connection bolt 30 is not dropped, and the operator can position the tip portion 31A. It can be easily confirmed.

  Further, as shown in FIG. 5, the rotation of the upper angle member 20 and the lower angle member 10 can be prevented by inserting the root portion 32 into the hole 22A. More specifically, when the upper angle member 20 and the lower angle member 10 are rotated with each other in a state where the root portion 32 is fitted in the hole 22A, the root portion 32 is parallel to the end surface of the hole 22A. Rotation is prevented by the contact of the smooth surface with the end surface. Thereby, the connection angle between the upper angle member 20 and the lower angle member 10 can be fixed using the connection bolt 30. In the present embodiment, the upper angle member 20 and the lower angle member 10 are fixed vertically to each other by inserting the root portion 32 into the hole 22A, and the rectangular ceiling-shaped update ceiling member 1 shown in FIG. Is configured.

[nut]
The nut 40 is attached to the distal end portion 31 </ b> A of the connecting bolt 30 protruding from the upper surface 21 of the upper angle member 20 and is in contact with the upper surface 21. The nut 40 is, for example, a disc spring nut, and has an internal thread portion that fits with the connecting bolt 30 on the inner peripheral surface. The nut 40 tightens the upper and lower angle members 20 and 10 together with the connecting bolt 30 in the overlapping direction.

  In the present embodiment, the nut 40 is disposed not on the lower angle member 10 side but on the upper surface 21 of the upper angle member 20. For this reason, even if the nut 40 is detached from the connecting bolt 30 during the operation, the nut 40 is placed on the upper surface 21 and can be prevented from being lost.

[Suspension]
The hanger 50 is a member for fixing the lower angle member 10 to a hanger bolt on the ceiling. As shown in FIG. 2, the hanger 50 includes an angle fixing portion 51 that surrounds the outer periphery of the lower angle member 10, and a bolt fixing portion 52 in which an insertion hole 52 </ b> A into which a suspension bolt is inserted is formed. As shown in FIG. 1, the hanger 50 is attached to the lower angle member 10 one by one outside the connecting portion 1A with the upper angle member 20, and is slidable in the longitudinal direction. As shown in FIG. 3, a through hole 51 </ b> A is formed in a portion of the hanger 50 that covers the lower surface 12 of the lower angle member 10, and a screw portion of the fixing bolt 60 is inserted into the through hole 51 </ b> A. . The hanger 50 is fixed in position with respect to the lower angle member 10 by fastening a fixing nut 65 to the tip of the fixing bolt 60.

(How to install the suspension member for renewal)
Next, a method of installing the renewal ceiling suspension member 1 on the ceiling will be described with reference mainly to FIGS.

  First, the step of preparing the updated suspension member 1 in the folded state is performed. In this step, as shown in FIG. 8, a box 2 in which the renewed suspension member 1 is packed is prepared, and the renewal suspension member 1 is taken out from the box 2. Then, the renewal suspension member 1 is carried in the folded state through the opening in the ceiling in the folded state.

  As shown in FIG. 8, in the folded state, the upper angle member 20 and the lower angle member 10 are substantially parallel to each other and are temporarily fixed by the connecting bolt 30 and the nut 40. In this temporarily fixed state, as shown in FIG. 7, the connecting bolt 30 is in a state of dropping downward. Therefore, the connecting angle can be adjusted by rotating the upper angle member 20 and the lower angle member 10 with respect to the connecting portion 1A.

  Next, the step of opening the update ceiling member 1 is performed. In this step, the upper angle member 20 and the lower angle member 10 are rotated with respect to each other about the connecting portion 1A. Thus, after the half-open state as shown in FIG. 9, the connection angle is changed from 0 ° to approximately 90 ° as shown in FIG. 10, and the upper angle member 20 and the lower angle member 10 are perpendicular to each other. It becomes a state. Then, by grasping the nut 40 and pulling up the connecting bolt 30 upward, as shown in FIG. 5, the root portion 32 of the connecting bolt 30 is inserted into the hole 22 </ b> A formed in the lower surface 22 of the upper angle member 20. Become. In this state, the nut 40 is tightened by a certain amount. Thereby, the connection angle between the upper angle member 20 and the lower angle member 10 is fixed. In this state, the nut 40 is not completely tightened, and the upper angle member 20 can slide along the rail groove 15.

  Next, the step of fixing the renewal ceiling suspension member 1 to the ceiling suspension bolt 3 is performed. In this step, the hanger 50 is first slid along the lower angle member 10 and the position is adjusted to match the pitch of the hanger bolt 3. Then, as shown in FIG. 3, the position of the hanger 50 is fixed with respect to the lower angle member 10 by tightening the fixing nut 65 with respect to the fixing bolt 60. Next, the suspension bolt 3 is inserted into the insertion hole 52 </ b> A (FIG. 2), and the bolt fixing portion 52 is tightened in the vertical direction by a nut and a washer attached to the suspension bolt 3. Thereby, as shown in FIG. 11, the renewal ceiling suspension member 1 is fixed to the suspension bolt 3.

  Thereafter, the upper angle member 20 is slid along the rail groove 15, and the position of the upper angle member 20 is adjusted to match the pitch of the indoor unit. Then, the upper angle member 20 is completely fixed to the lower angle member 10 by further tightening the nut 40 with respect to the connecting bolt 30. As described above, when the nut 40 is tightened in a suspended state, the nut 40 may be accidentally detached from the connection bolt 30 due to poor workability. Even in such a case, as described above, the tip 31A of the connecting bolt 30 protrudes from the upper surface 21 of the upper angle member 20, and the nut 40 rests on the upper surface 21. There is no risk of losing.

  Next, the step of fixing the indoor unit is performed. In this step, as shown in FIG. 12, the bolts 5 attached to the four corners of the indoor unit 4 are inserted into holes formed in the upper and lower surfaces of the upper angle member 20. Then, the upper angle member 20 is tightened in the vertical direction by two nuts attached to the bolt 5. Thereby, as shown in FIG. 12, the indoor unit 4 is fixed to the upper angle member 20. Through the steps as described above, the above-mentioned ceiling member for update is installed on the ceiling, and the indoor unit 4 is installed.

(Function and effect)
Next, a characteristic configuration and operational effects of the above-described update ceiling member 1 will be described.

  The renewal suspension member 1 has a lower angle member 10, an upper angle member 20 disposed on the upper surface 11 of the lower angle member 10, and a tip 31 </ b> A protruding from the upper surface 21 of the upper angle member 20. The connecting bolt 30 extending from the upper surface 11 of the lower angle member 10 to the upper angle member 20 side, and the nut 40 attached to the tip portion 31A are provided. The lower angle member 10 is provided with a second upper surface 11B as a fall prevention portion for preventing the connection bolt 30 from falling so that the tip portion 31A is protruded from the upper surface 21 of the upper angle member 20. Yes.

  According to the above-described renewal suspension member 1, even if the nut 40 is accidentally detached from the connection bolt 30 during the operation, the tip 31A of the connection bolt 30 is located on the upper side by the second upper surface 11B that functions as a fall prevention portion. The angle member 20 protrudes from the upper surface 21, and the nut 40 is placed on the upper surface 21. Therefore, it is possible to prevent the connection bolt 30 and the nut 40 from being lost during the work. Further, since the connecting bolt 30 extends from the upper surface 11 to the upper angle member 20 side without penetrating from the lower surface 12 to the upper surface 11 of the lower angle member 10, the rigidity of the lower angle member 10 can be increased. The member can be prevented from being damaged.

  The upper surface 11 of the lower angle member 10 is provided with a rail groove 15 that is recessed toward the lower surface 12, and both ends 15 </ b> A and 15 </ b> B of the rail groove 15 are connected by the second upper surface 11 </ b> B. The second upper surface 11B is a continuous surface in which no holes or cuts are formed. Thereby, the rigidity of the lower angle member 10 can be further increased, and damage to the member can be more reliably prevented.

  The lower angle member 10 has a shape extending in one direction, and the rail groove 15 is provided along the longitudinal direction thereof. Thus, the position can be easily adjusted by sliding the upper angle member 20 along the rail groove 15.

  The upper angle member 20 has a shape extending in one direction, and the upper angle member 20 is provided with holes 21A and 22A into which the connecting bolts 30 are inserted along its longitudinal direction. Accordingly, the lower angle member 10 can be slid along the holes 21A and 22A in a state where the connecting bolt 30 is inserted into the holes 21A and 22A, and the position can be easily adjusted.

  The upper angle member 20 is provided with a hollow portion surrounded by an upper surface 21 and a lower surface 22 in which holes 21A and 22A are formed, and a side surface 23. And in the said hollow part, the wall part 24 which connects the upper surface 21 and the lower surface 22 is provided in the outer side rather than hole 21A, 22A. Thereby, the intensity | strength of the up-down direction of the upper side angle member 20 can be raised more, and the interference with the connection bolt 30 and the wall part 24 which were inserted in hole 21A, 22A can be prevented.

  The connecting bolt 30 is inserted into the hole 22A of the upper angle member 20 and has a quadrangular shape including a pair of surfaces parallel to the end surface of the hole 22A. The connection bolt 30 rotates the upper angle member 20 and the lower angle member 10. It has a root 32 to prevent. Thereby, it connects so that rotation of the upper side and lower side angle members 20 and 10 may be prevented, and a connection angle can be fixed easily.

  The upper angle member 20 and the lower angle member 10 are fixed vertically to each other by inserting the root portion 32 into a hole 22A formed in the lower surface 22 of the upper angle member 20. Thereby, the upper and lower angle members 20 and 10 can be easily assembled to the rectangular frame so as to match the shape of the indoor unit 4.

  The upper angle member 20 is configured by a pair of connecting member insertion portions 20A having holes 21A and 22A formed in the upper and lower surfaces 21 and 22 and a pair of connecting member insertion portions 20A, and a closed outer peripheral wall. Box body portion 20B. Thereby, compared with the case where the holes 21A and 22A are formed in the upper and lower surfaces 21 and 22 in the entire upper angle member 20, the strength of the upper angle member 20 can be further increased.

(Embodiment 2)
Next, an update ceiling member 1A according to Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 13 shows the overall structure of the update ceiling member 1A. 14 and 15 are enlarged views of regions XIV and XV in FIG. FIG. 16 shows a state in which the lower angle member 10 is viewed from the longitudinal direction. FIG. 17 shows the upper angle member 20 as viewed from the longitudinal direction. FIG. 18 shows a state in which the connecting bolt 30 is lowered downward. In the second embodiment, only parts different from the first embodiment will be described.

  As shown in FIGS. 14 and 15, the bolt fixing portion 52 includes a first extending portion 52 </ b> C extending horizontally from the upper portion of the angle fixing portion 51 and horizontally extending from the lower portion of the angle fixing portion 51. Second extending portion 52D. The first extending portion 52C and the second extending portion 52D are connected to each other by a wall portion 52E.

  As shown in FIG. 16, the lower angle member 10 has a square shape when viewed from the longitudinal direction, and no angle reinforcing portions are provided at the four corners thereof. The extending surface 11AA extends horizontally with respect to the first upper surface 11A, and no upper rib is provided on the first upper surface 11A. For this reason, the first upper surface 11 </ b> A and the extended surface 11 </ b> AA are in contact with the inner surface of the angle fixing portion 51. Similarly, the extending surface 12AA extends horizontally with respect to the second upper surface 12A, and no lower rib is provided on the second upper surface 12A. As shown in FIG. 17, the upper angle member 20 has a square shape when viewed from the longitudinal direction, and no angle reinforcing portions are provided at the four corners thereof.

  Also in the renewal ceiling suspension member 1A having the above-described configuration, the distal end portion 31A protrudes from the upper surface 21 by the head 33 of the connecting bolt 30 being supported by the second upper surface 11B, which is a fall prevention portion, as shown in FIG. This state is maintained, and the nut 40 is placed on the upper surface 21 of the upper angle member 20, so that the connection bolt 30 and the nut 40 can be prevented from being lost during the operation.

(Other embodiments)
Finally, other embodiments of the update suspension member according to the present invention will be described.

  The renewal ceiling suspension member 1 is not limited to the case where it is used when an existing indoor unit is removed and replaced with a new indoor unit, but also when a new indoor unit is installed on a ceiling where no indoor unit is installed. Can be used. Moreover, it is not limited to what assembled the four angle members 10 and 20, It may consist of three angle members, and may consist of five or more angle members.

  In the lower angle member 10, the second upper surface 11 </ b> B is preferably a continuous surface in which no holes or cuts are formed, but is not limited thereto, and may be a surface in which holes or cuts are formed. The rail groove 15 is not limited to being formed in the entire longitudinal direction, and may be formed only in part.

  In the upper angle member 20, the wall portion 24 may be omitted. Further, the box portion 20B may be omitted, and the holes 21A and 22A may be formed in the upper and lower surfaces 21 and 22 even in the center in the longitudinal direction. In the connection bolt 30, the root portion 32 may be omitted.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 Ceiling member for renewal 10 Lower angle member (first angle member)
11 Upper surface 12 Lower surface 15 Rail groove 15A, 15B Both ends 20 Upper angle member (second angle member)
20A connecting member insertion part 20B box part 21 upper surface 21A hole 22 lower surface 22A hole 24 wall part 30 connecting bolt (connecting member)
31A Tip 32 Root 33 Head 40 Nut (Tightening member)

Claims (8)

A first angle member (10) fixed to the ceiling suspension bolt (3);
A second angle member (20) disposed on the upper surface (11) of the first angle member (10) and to which the indoor unit (4) is fixed;
The second angle member (20) extends from the upper surface (11) of the first angle member (10) toward the second angle member (20) so that the tip (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30);
A fastening member (40) attached to the distal end portion (31A) and fastening the first and second angle members (10, 20) together with the connecting member (30) in an overlapping direction;
The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). An upholstery member for updating (1) provided with a fall prevention part (11B) to prevent. The upper surface (11) of the first angle member (10) is provided with a rail groove (15) recessed on the lower surface (12) side,
The said suspension prevention part (11B) is a ceiling suspension member for update (1) of Claim 1 comprised by the surface which connects the both ends (15A, 15B) of the said rail groove | channel (15). The first angle member (10) has a shape extending in one direction,
The ceiling suspension member (1) according to claim 2, wherein the rail groove (15) is provided along the longitudinal direction so as to slide the second angle member (20). The second angle member (20) has a shape extending in one direction,
The said 2nd angle member (20) is provided with the hole (21A, 22A) in which the said connection member (30) is inserted along the longitudinal direction, The any one of Claims 1-3. Renewal ceiling suspension member (1). A first angle member (10) fixed to the ceiling suspension bolt (3);
A second angle member (20) disposed on the upper surface (11) of the first angle member (10) and to which the indoor unit (4) is fixed;
The second angle member (20) extends from the upper surface (11) of the first angle member (10) toward the second angle member (20) so that the tip (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30);
A fastening member (40) attached to the distal end portion (31A) and fastening the first and second angle members (10, 20) together with the connecting member (30) in an overlapping direction;
The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided,
The second angle member (20) has a shape extending in one direction,
The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction,
The second angle member (20) has an upper surface (21) and a lower surface (22) in which the holes (21A, 22A) are formed, and a side surface (23) connecting the upper surface (21) and the lower surface (22). ) And a hollow portion surrounded by
It said bore (21A, 22A) in the hollow portion outside the can, the upper surface (21) and said lower surface (22) and the wall portion so as to connect (24) are provided, ceiling for updates Member (1). A first angle member (10) fixed to the ceiling suspension bolt (3);
A second angle member (20) disposed on the upper surface (11) of the first angle member (10) and to which the indoor unit (4) is fixed;
The second angle member (20) extends from the upper surface (11) of the first angle member (10) toward the second angle member (20) so that the tip (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30);
A fastening member (40) attached to the distal end portion (31A) and fastening the first and second angle members (10, 20) together with the connecting member (30) in an overlapping direction;
The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided,
The second angle member (20) has a shape extending in one direction,
The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction,
The connecting member (30) is inserted into the hole (22A) formed in the lower surface (22) of the second angle member (20), and has a pair of surfaces parallel to the end surface of the hole (22A). including the root portion of the polygonal having (32), update a ceiling member (1).   The first angle member (10) and the second angle member (20) have the root portion (32) in the hole (22A) formed in the lower surface (22) of the second angle member (20). The renewal suspension member (1) according to claim 6, which is fixed perpendicularly to each other by being inserted. A first angle member (10) fixed to the ceiling suspension bolt (3);
A second angle member (20) disposed on the upper surface (11) of the first angle member (10) and to which the indoor unit (4) is fixed;
The second angle member (20) extends from the upper surface (11) of the first angle member (10) toward the second angle member (20) so that the tip (31A) protrudes from the upper surface (21) of the second angle member (20). A connecting member (30);
A fastening member (40) attached to the distal end portion (31A) and fastening the first and second angle members (10, 20) together with the connecting member (30) in an overlapping direction;
The connection member (30) is dropped on the first angle member (10) so that the tip end (31A) is protruded from the upper surface (21) of the second angle member (20). The fall prevention part (11B) to prevent is provided,
The second angle member (20) has a shape extending in one direction,
The second angle member (20) is provided with holes (21A, 22A) into which the connecting member (30) is inserted along the longitudinal direction,
The second angle member (20)
A pair of connecting member insertion portions (20A) in which the holes (21A, 22A) are formed;
The paired connecting member insertion portion positioned so as to separate the (20A), closed including the box section constituted by the outer peripheral wall and (20B), and updates a ceiling member (1).

Images