JP6290948B2 - Ceiling member for renewal and its installation method - Google Patents

Description

  The present invention relates to a renewal ceiling suspension member and an installation method thereof.

  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 Patent Document 1 below, a ceiling suspension member in which four rectangular angle members are assembled in a well shape by a fixing bracket is installed on the ceiling by inserting suspension bolts into holes formed in the angle members. A method is disclosed. Patent Document 2 below discloses a method of installing a ceiling suspension member on a ceiling by engaging an angle member with a U-shaped latching portion provided on a hanging tool.

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

  In Patent Document 1, first, four angle members cut to a predetermined length are prepared. Then, the two angle members are fixed to the ceiling hanging bolts first, and then the remaining two angle members are fixed to form a well-shaped frame. As described above, in the case where the frame body is formed by sequentially assembling a plurality of angle members one by one, there is a problem that a lot of labor is required for installation and workability is poor. In Patent Document 2, the four angle members are assembled into a frame shape, and then the lower angle member is locked by the latching portion. In this case as well, the angle member is formed to form the frame body. The trouble of assembling the members one by one increases.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an updating ceiling suspension member that can reduce the labor required for installation on a ceiling and an installation method thereof.

An updating ceiling suspension member (1) according to one aspect of the present invention has a shape extending in a longitudinal direction, a pair of first angle members (10) for fixing to a ceiling suspension bolt (3), and a longitudinal direction. A pair of second angle members (20) for fixing the indoor unit (4), and the first angle member (10) and the second angle member (20) are connected to each other. Connecting member (30). At least one of the first angle member (10) and the second angle member (20) is provided with a slide portion (15, 21A, which includes a long hole or a groove for sliding the connecting member (30) along the longitudinal direction. 22A). The connecting member (30) has the first angle member (10) and the second angle member (in the state before the first angle member (10) and the second angle member (20) are fixed to each other ). 20) is allowed to rotate around the connecting portion (1A) by the connecting member (30) while changing the connecting angle (θ) , and slides at the slide portions (15, 21A, 22A). possible Ru der.

  In the above-described ceiling suspension member (1), the first angle member (10) and the second angle member (20) are connected to each other by sliding the connection member (30) on the slide portions (15, 21A, 22A). By rotating each other around (1A), the frame can be opened from the folded state in which the connection angle (θ) is approximately 0 °. And the installation can be completed by fixing the ceiling suspension member for update (1) opened in the frame shape to the suspension bolt (3) on the ceiling, and then fixing the indoor unit (4). For this reason, it is possible to greatly reduce the labor required for forming the frame body as compared with the conventional structure in which a plurality of angle members are prepared and assembled one by one in order. It is possible to reduce the time and labor required for installation.

  In the update ceiling member (1), the second angle member (20) may be disposed on the upper surface (11) of the first angle member (10). The slide portion (15, 21A, 22A) is provided along the longitudinal direction of the first angle member (10) on the upper surface (11), and the rail groove (15) in which the connecting member (30) is disposed. May be included.

  According to the said structure, a frame can be easily formed by sliding a connection member (30) along a rail groove | channel (15). Further, after the frame body is formed, the position of the second angle member (20) is adjusted to fit the size of the indoor unit (4) by sliding the connecting member (30) along the rail groove (15). be able to.

  In the above-described renewal suspension member (1), the slide portions (15, 21A, 22A) are provided along the longitudinal direction of the second angle member (20), and the connecting member (30) is inserted therein. The hole (21A, 22A) may be included.

  According to the said structure, a frame can be easily formed by sliding a connection member (30) along a hole (21A, 22A). After the frame is formed, the position of the first angle member (10) is adjusted to match the pitch of the suspension bolt (3) by sliding the connecting member (30) along the holes (21A, 22A). can do.

  In the update ceiling member (1), the connection member (30) includes the first angle member (10) and the second angle member (20) so that the connection angle (θ) is fixed. The rotation prevention part (32, 34) which prevents rotation of this may be included.

  According to the said structure, by preventing rotation of a 1st angle member (10) and a 2nd angle member (20), in the state which opened the ceiling suspension member for update (1) in frame shape, a connection angle ( θ) can be fixed.

  In the above-described renewal ceiling member (1), the rotation preventing portion (32) is a portion to be inserted into a hole (22A) formed in the second angle member (20), and the hole (22A) It may have a polygonal shape including a pair of surfaces (32A) parallel to the end surfaces.

  According to the said structure, when a pair of surface (32A) in a rotation prevention part (32) contact | abuts to the end surface of a hole (22A), between a 1st angle member (10) and a 2nd angle member (20). The rotation can be prevented.

  The installation method of the renewal ceiling member according to another aspect of the present invention is a method for installing the renewal ceiling member (1) on the ceiling. The above-described method of installing the ceiling suspension member includes a step of preparing the ceiling suspension member for update (1) in a folded state, and a step of preparing the ceiling suspension member for update (1) in a folded state. The step of opening the connecting angle (θ) between the one angle member (10) and the second angle member (20) to be changed, and the opened ceiling suspension member (1) opened to the suspension bolt (3) on the ceiling And a step of fixing the indoor unit (4) to the renewal ceiling suspension member (1) fixed to the suspension bolt (3).

  In the above-described method of installing the updating ceiling suspension member, the updating suspension member (1) in the folded state is opened so that the connection angle (θ) between the first and second angle members (10, 20) changes. A frame can be formed only by this. And the installation is completed by fixing the said frame to a hanging bolt (3), and fixing an indoor unit (4) after that. For this reason, compared with the conventional method of preparing a plurality of angle members and sequentially assembling them one by one, the labor required to form the frame can be greatly reduced. Therefore, according to the installation method of the above-mentioned update ceiling suspension member, it is possible to reduce the labor required for installation of the update ceiling suspension member (1) on the ceiling.

  ADVANTAGE OF THE INVENTION According to this invention, the ceiling suspension member for an update which can reduce the effort required for the installation to a ceiling more, and its installation method 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 of 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 of 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 flowchart which shows the procedure of the installation method of the suspension member for an update which concerns on Embodiment 1 of this invention. 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 typically a mode that the said suspension member for an update is carried to a ceiling back. It is a figure when opening of a ceiling is planarly viewed. 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 update ceiling member was fixed to the suspension bolt. It is a figure which shows the state before a suspension bolt is inserted in the insertion hole of a suspension tool. It is a figure which shows the state in which the suspension bolt was inserted in the insertion hole of a suspension tool. It is a figure which shows the state by which the hanging tool was clamped by the washer. 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 flowchart which shows the procedure of the installation method of the suspension member for an update which concerns on Embodiment 2 of this invention. It is a figure for demonstrating the installation method of the ceiling suspension member for an update which concerns on Embodiment 2 of this invention. It is a flowchart which shows the procedure of the installation method of the ceiling suspension member for update which concerns on Embodiment 3 of this invention. It is a figure which shows the structure of the ceiling suspension member for update which concerns on Embodiment 4 of this invention. It is a figure which shows the state before fixation of the said suspension member for an update in area | region XXI, XXII in FIG. It is a figure which shows the state after fixing the said ceiling suspension member for update in area | region XXI, XXII 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 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 perspective view which shows the state before fixation of the upper side and lower side angle member in the ceiling suspension member for update which concerns on Embodiment 5 of this invention. It is the figure which looked at the lower angle member from the longitudinal direction in the state before fixation. It is a perspective view which shows the state after fixation of an upper side and a lower side angle member. It is the figure which looked at the lower angle member from the longitudinal direction in the state after fixation. It is the figure which looked at the upper side angle member from the longitudinal direction in the state after fixation. It is a perspective view which shows the structure of the board | plate material for a connection.

  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 a pair of parallel lower angle members 10 (first angle members) for fixing to a ceiling suspension bolt and a pair of parallel upper angle members 20 (for fixing an indoor unit). A second angle member), four connection bolts 30 (connection members) and nuts 40 for connecting the upper angle member 20 and the lower angle member 10 to each other, and four suspension members 50.

  The upper and lower angle members 20 and 10 have a shape extending in the longitudinal direction, and are constrained in a state where they are vertically overlapped by a connecting bolt 30 extending toward the upper angle member 20 and a nut 40 attached to the tip portion thereof. . The hanger 50 is attached to the end portion side of the lower angle member 10 with respect to the connecting portion 1A. The hanger 50 includes an angle fixing part 51 having a square shape surrounding the outer periphery of the lower angle member 10, and a bolt fixing part 52 attached to the angle fixing part 51 and to which a ceiling hanging bolt 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 a cylindrical member formed by extrusion molding of aluminum. 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. An extending surface 11A is provided on the first upper surface 11A on the inner side of the connecting portion with the second upper surface 11B. 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, and are partitioned from the hollow portion 14 by the second upper surface 11B. Further, the rail groove 15 is provided along the longitudinal direction so as to extend from one end portion to the other end portion of the lower angle member 10 on the upper surface 11 (FIG. 1), and the head 33 of the connecting bolt 30 in the groove. Is arranged (FIG. 3). By sliding the connecting bolt 30 in the longitudinal direction of the lower angle member 10 along the rail groove 15, the pitch between the upper angle members 20 can be adjusted. That is, the rail groove 15 is a slide portion that slides the connecting bolt 30 along the longitudinal direction 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. An extending surface 12AA is provided on the first lower surface 12A on the inner side of the connecting portion with the second lower surface 12B. 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 hanger 50 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 lower angle member 10 is a continuous surface that is not entirely formed with holes or cuts. It has become.

  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 a cylindrical member formed by extrusion of aluminum in the same manner as the lower angle member 10 and 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 both ends thereof. 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.

  The upper surface 21 and the lower surface 22 are formed with holes 21A and 22A into which the connecting bolts 30 are inserted. As shown in FIG. 1, the holes 21 </ b> A and 22 </ b> A are provided in a long hole shape having a rectangular shape along the longitudinal direction of the upper angle member 20, and are formed at substantially the center in the width direction. By sliding the connecting bolt 30 in the longitudinal direction of the upper angle member 20 along the holes 21A and 22A, the pitch between the lower angle members 10 can be adjusted. That is, the holes 21 </ b> A and 22 </ b> A are slide portions that slide the connecting bolt 30 along the longitudinal direction of the upper angle member 20. Although the hole 22A formed in the lower surface 22 is not shown in FIG. 1, the hole 22A is substantially the same size as the hole 21A formed in the upper surface 21, and is formed at a position directly below the hole 21A. Yes.

  As shown in FIG. 1, the upper angle member 20 includes a pair of connecting member insertion portions 20A in which holes 21A and 22A are formed, and a box body portion 20B positioned so as to separate the pair of connecting member insertion portions 20A. And are configured to be connected continuously. 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 inserting portion 20A, the box body portion 20B is not formed with holes 21A and 22A on the upper surface 21 and the lower surface 22, and is constituted by a closed outer peripheral wall continuous in the circumferential direction. The rigidity is higher than that of the portion 20A.

  As shown in FIG. 5, the upper surface 21 and the lower surface 22 are connected by a pair of wall portions 24. The wall portion 24 is formed of a flat plate and is provided outside the holes 21A and 22A. By the wall portion 24, the strength of the upper angle member 20 in the vertical direction is increased. The wall portion 24 is provided over the entire length direction from one end portion to the other end portion 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. As shown in FIGS. 3 and 5, the connecting bolt 30 includes a circular head 33, a quadrangular root portion 32 connected to the head 33, and a cylindrical main body portion connected to the root portion 32. 31. The connecting bolt 30 is disposed such that the head 33 abuts on the extending surface 11AA in the rail groove 15, the main body 31 penetrates the upper angle member 20 up and down, and the tip 31 A protrudes from the upper surface 21. Yes.

  As shown in FIG. 5, the root portion 32 is inserted into a hole 22 </ b> A formed in the lower surface 22 of the upper angle member 20. The root portion 32 has a square shape when viewed from the axial direction, and has a pair of side surfaces 32A parallel to the end surface of the hole 22A. Accordingly, when the upper angle member 20 and the lower angle member 10 are rotated with each other with the root portion 32 fitted in the hole 22 </ b> A, the side surface 32 </ b> A of the root portion 32 extends the surface of the lower angle member 10. It is locked by the end surface of 11AA (FIG. 3) and locked by the end surface of the hole 22A in the upper angle member 20 (FIG. 5). For this reason, the upper angle member 20 and the lower angle member 10 are prevented from rotating about the connecting portion 1A. That is, the root portion 32 in the present embodiment is a rotation preventing portion that prevents the upper angle member 20 and the lower angle member 10 from rotating so that the connection angle θ is fixed. The root portion 32 is not limited to a quadrangular shape, and may have another polygonal shape such as a hexagonal shape or an octagonal shape.

[nut]
The nut 40 is attached to the tip 31 </ b> A of the connecting bolt 30 protruding from the upper surface 21 of the upper angle member 20. The nut 40 is, for example, a disc spring nut, and a screw portion that fits with the connecting bolt 30 is formed on the inner peripheral surface. By tightening the nut 40 with respect to the connecting bolt 30, the upper and lower angle members 20, 10 can be restrained in the overlapping direction.

[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 each end of the lower angle member 10, and can be slid along the longitudinal direction. As shown in FIG. 3, a through hole 54B 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 54B. . The hanger 50 is fixed to the lower angle member 10 by tightening a fixing nut 65 at the tip of the fixing bolt 60.

[Folding structure of renewal suspension member]
Next, the folding structure of the renewal ceiling suspension member 1 will be described. As shown in FIG. 7, the upper and lower angle members 20 and 10 are slid by sliding the connecting bolt 30 in the rail groove 15 and the holes 21A and 22A in a state where the connecting angle θ is folded at substantially 0 °. It rotates around the connecting portion 1A while increasing the mutual connecting angle θ. Then, by rotating the upper angle member 20 and the lower angle member 10 to each other until the connection angle θ spreads to approximately 90 °, the renewal suspension member 1 is opened in a rectangular frame as shown in FIG. be able to. That is, in the above-described ceiling suspension member 1 for updating, the upper angle member 20 and the lower angle member 10 rotate about the connecting portion 1A as a fulcrum in conjunction with the sliding of the connecting bolt 30 in the rail groove 15 and the holes 21A and 22A. Thus, the mutual connection angle θ can be freely changed. After opening the frame, the pitch is adjusted by sliding the upper angle member 20 along the rail groove 15, and the pitch is adjusted by sliding the lower angle member 10 along the holes 21A and 22A. can do.

  In this way, the above-described renewal suspension member 1 can be packed and stored in the box 2 as shown in FIG. 7 by being folded so that the connection angle θ is substantially 0 °. By rotating 10 and 20 with respect to each other, the frame can be quickly opened. The “connection angle θ” is an angle formed between the longitudinal direction of the upper angle member 20 and the longitudinal direction of the lower angle member 10 when the renewal ceiling member 1 is viewed in plan.

(How to install the suspension member for renewal)
Next, a method for installing the renewal suspension member 1 on the ceiling will be described with reference to the flowchart shown in FIG.

  First, step S10 for preparing the renewal suspension member 1 in a folded state is performed. In step S <b> 10, as shown in FIG. 7, first, a box 2 in which the updated ceiling suspension member 1 in a folded state is packed is prepared, and the updating ceiling suspension member 1 is taken out from the box 2.

  As shown in FIG. 7, in the folded state, the upper angle member 20 and the lower angle member 10 are substantially parallel to each other (the connection angle θ is substantially 0 °), and are temporarily fixed by the connection bolt 30 and the nut 40. . In this temporarily fixed state, the nut 40 is attached to the tip portion 31A of the connecting bolt 30, but the head portion 33 contacts the second upper surface 11B, and the root portion 32 fits into the hole 22A of the upper angle member 20. It is located in the rail groove 15 without being inserted. Therefore, in this state, the connection angle θ can be changed by rotating the upper and lower angle members 20 and 10 with respect to the connection portion 1A.

  Next, step S20 for carrying the renewal ceiling suspension member 1 to the back of the ceiling is performed. In this step S20, as shown in FIG. 8, the renewal ceiling suspension member 1 is lifted and carried to the back side of the ceiling plate 91 through the ceiling opening 92 while being folded. In the space behind the ceiling, a suspension bolt 3 suspended from the ceiling surface 6 is provided.

  FIG. 9 shows a state when the ceiling board 91 is viewed in plan. As shown in FIG. 9, the opening 92 has a quadrangular shape in plan view, and its width W1 is smaller than the width W2 of the renewal suspension member 1 (broken line in the figure) when opened in a frame shape. Also good. In this case, the opening 92 cannot be passed through after the renewal suspension member 1 is opened, but in this embodiment, the renewal suspension member 1 is passed through the opening 92 in a compactly folded state. Therefore, such a problem does not occur.

  Next, Step S30 for opening the update ceiling member 1 is performed. In this step S30, first, they are rotated relative to each other about the connecting portion 1A so that the connecting angle θ between the upper and lower angle members 20, 10 changes. At this time, after the connecting bolt 30 slides along the rail groove 15 and the holes 21A and 22A and is in a half-open state as shown in FIG. 10, the connecting angle θ increases to approximately 90 °. Thereby, as shown in FIG. 11, the connection angle θ is changed from 0 ° to approximately 90 °, and a rectangular frame is formed. In this step S30, the operator may turn only the upper angle member 20 by hand, or may turn only the lower angle member 10 by hand.

  Then, after the connection angle θ is changed as described above, the connection angle θ is fixed. Specifically, by grasping the nut 40 and pulling the connecting bolt 30 upward, 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 as shown in FIG. 5. The In this state, the nut 40 is tightened by a certain amount. Thereby, since the rotation of the upper and lower angle members 20 and 10 is prevented by the root portion 32, the connection angle is fixed at approximately 90 °. In this state, the nut 40 is not completely tightened, and the upper angle member 20 can be slid along the rail groove 15.

  Next, step S40 for fixing the renewal ceiling suspension member 1 to the suspension bolt 3 on the ceiling is performed. In step S40, steps S41 to S43 described below are sequentially performed, so that the updating ceiling suspension member 1 is fixed to the four suspension bolts 3 as shown in FIG. First and second washers 71 and 81 and first and second nuts 72 and 82 are attached to each of the four suspension bolts 3 (FIG. 13).

  First, in step S41, the position of the hanger 50 is fixed. Specifically, the hanger 50 is slid to both end sides of 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, in step S <b> 42, the update ceiling suspension member 1 is placed on the second washer 81. Specifically, first, the position of the second nut 82 is adjusted so that the height position of the second washer 81 is substantially the same in each of the four suspension bolts 3 (FIG. 13). Next, as shown in FIG. 14, the lower angle member 10 is lifted, and the suspension bolt 3 is inserted into the insertion hole 52A from the side through the opening P1. Then, the renewal ceiling suspension member 1 is placed on the second washer 81 so that the lower surface 52D of the hanger 50 (bolt fixing portion 52) is in contact with the second washer 81.

  Next, in step S <b> 43, the renewal ceiling suspension member 1 is sandwiched between the first and second washers 71 and 81. Specifically, as shown in FIG. 15, the position of the first nut 72 is adjusted so that the first washer 71 contacts the upper surface 52 </ b> C of the hanger 50 (bolt fixing portion 52). Then, by tightening the first and second nuts 72 and 82, the suspension tool 50 (bolt fixing portion 52) is fastened to the suspension bolt 3 while being sandwiched between the first and second washers 71 and 81. With the above steps S41 to S43, the fixing of the updating ceiling suspension member 1 to the suspension bolt 3 is completed.

  Next, step S50 for fixing the position of the upper angle member 20 is performed. In step S50, the upper angle member 20 is slid along the rail groove 15 in the state where the renewal suspension member 1 is suspended as shown in FIG. Thereby, the space | interval of the upper side angle member 20 is adjusted so that it may match with the pitch of the indoor unit 4 fixed by below-mentioned step S60. Thereafter, the upper angle member 20 is fixed to the lower angle member 10 by further tightening the nut 40 with respect to the connecting bolt 30.

  Next, step S60 for fixing the indoor unit 4 is performed. In this step S60, as shown in FIG. 16, the bolts 5 attached to the four corners of the indoor unit 4 are inserted into holes formed in the upper and lower surfaces so as to penetrate the upper angle member 20. Then, the upper angle member 20 is tightened up and down by two nuts attached to the bolt 5. Accordingly, the indoor unit 4 is fixed to the upper angle member 20 as shown in FIG. Through the above steps S10 to S60, the installation of the above-described update suspension member 1 is completed.

(Function and effect)
Next, the features and operational effects of the above-described ceiling suspension member 1 and its installation method will be described.

  The renewal ceiling suspension member 1 has a shape extending in the longitudinal direction, a pair of lower angle members 10 for fixing to the suspension bolt 3 on the ceiling, a shape extending in the longitudinal direction, and the indoor unit 4 A pair of upper angle members 20 for fixing, and connecting bolts 30 for connecting the lower angle member 10 and the upper angle member 20 to each other are provided. The lower angle member 10 and the upper angle member 20 are provided with slide portions 15, 21 </ b> A, and 22 </ b> A made of long holes or grooves for sliding the connecting bolt 30 along the longitudinal direction. The connecting bolt 30 slides at the slide portions 15, 21A, and 22A so that the lower angle member 10 and the upper angle member 20 rotate about the connecting portion 1A while changing the connecting angle θ.

  In the update ceiling member 1, the lower angle member 10 and the upper angle member 20 are rotated around the connecting portion 1A by sliding the connecting bolt 30 on the slide portions 15, 21A, 22A, and the connecting angle θ Can be opened like a frame from a folded state where the angle is approximately 0 °. Then, the installation can be completed by fixing the renewal ceiling suspension member 1 opened in a frame shape to the suspension bolt 3 on the ceiling and then fixing the indoor unit 4. For this reason, it is possible to greatly reduce the labor required for forming the frame body as compared with the conventional structure in which a plurality of angle members are prepared and assembled one by one in order. It is possible to reduce the time and labor required for installation.

  In the above ceiling suspension member 1, the upper angle member 20 is disposed on the upper surface 11 of the lower angle member 10. The slide portions 15, 21 </ b> A, 22 </ b> A are provided along the longitudinal direction of the lower angle member 10 on the upper surface 11 and include rail grooves 15 in which the connecting bolts 30 are disposed. According to this configuration, the frame body can be easily formed by sliding the connecting bolt 30 along the rail groove 15. In addition, after the frame body is formed, the position of the upper angle member 20 can be adjusted to fit the size of the indoor unit 4 by sliding the connecting bolt 30 along the rail groove 15.

  In the above-described renewal suspension member 1, the slide portions 15, 21 </ b> A, 22 </ b> A are provided along the longitudinal direction of the upper angle member 20, and include holes 21 </ b> A, 22 </ b> A into which the connecting bolts 30 are inserted. According to this configuration, the frame body can be easily formed by sliding the connecting bolt 30 along the holes 21A and 22A. Further, after the frame body is formed, the position of the lower angle member 10 can be adjusted to match the pitch of the suspension bolt 3 by sliding the connecting bolt 30 along the holes 21A and 22A.

  In the renewal ceiling suspension member 1, the connection bolt 30 has a root portion 32 as a rotation preventing portion that prevents the lower angle member 10 and the upper angle member 20 from rotating so that the connection angle θ is fixed. Is included. According to this configuration, by preventing the lower angle member 10 and the upper angle member 20 from rotating, the connecting angle θ can be fixed in a state where the renewal ceiling suspension member 1 is opened in a frame shape.

  In the above-described renewal suspension member 1, the root portion 32 is a portion to be inserted into the hole 22A formed in the upper angle member 20, and has a polygonal shape including a pair of side surfaces 32A parallel to the end surface of the hole 22A. Have. According to this configuration, the pair of side surfaces 32A of the root portion 32 are locked by the end surfaces of the holes 22A, thereby preventing the lower angle member 10 and the upper angle member 20 from rotating.

  The update ceiling suspension member is installed in step S10 for preparing the updated suspension member 1 in the folded state, the updated suspension member 1 in the folded state, and the lower angle member 10. Step S30 for opening the connecting angle θ of the upper angle member 20 to change, Step S40 for fixing the opened update ceiling suspension member 1 to the suspension bolt 3 on the ceiling, and Update ceiling suspension fixed to the suspension bolt 3 Step S60 for fixing the indoor unit 4 to the member 1.

  In the above-described method of installing the update ceiling member, the frame body can be formed simply by opening the update ceiling member 1 in the folded state so that the connection angle θ between the angle members 10 and 20 changes. And the installation is completed by fixing the said frame to the suspension bolt 3, and fixing the indoor unit 4 after that. For this reason, compared with the conventional method of preparing a plurality of angle members and sequentially assembling them one by one, the labor required to form the frame can be greatly reduced. Therefore, according to the above-described method for installing the updating ceiling suspension member, it is possible to reduce the effort required for installing the updating ceiling suspension member 1 on the ceiling.

<Embodiment 2>
Next, the installation method of the suspension member for update which concerns on Embodiment 2 of this invention is demonstrated. As shown in the flowchart of FIG. 17, the method of installing the update suspension member according to the second embodiment is basically performed in the same procedure as in the first embodiment and has the same effect. The difference is that step S20 for carrying the ceiling suspension member 1 to the back of the ceiling is omitted.

  As shown in FIG. 18, in the second embodiment, the ceiling plate 91 and its opening 92 are not provided, and the renewal ceiling is attached to the suspension bolt 3 suspended from the ceiling surface 6 without being transported to the ceiling. The suspension member 1 is fixed. Therefore, the renewal suspension member 1 is installed indoors in a state where the whole is exposed. Even in such an embodiment, it is possible to reduce the time and effort required for installing the renewal suspension member 1 in the same manner as in the first embodiment. Can be reduced.

<Embodiment 3>
Next, the installation method of the suspension member for update which concerns on Embodiment 3 of this invention is demonstrated. As shown in the flowchart of FIG. 19, the installation method of the renewal ceiling suspension member according to the third embodiment is basically performed in the same procedure as in the first embodiment and has the same effect. The timing for fixing the position of the member 20 is different.

  As shown in the flowchart of FIG. 19, in the third embodiment, instead of step S <b> 50 in which the position of the upper angle member 20 is fixed after the update ceiling member 1 is fixed to the suspension bolt 3, the update ceiling member 1 is changed. Step S31 of fixing the position of the upper angle member 20 after opening and before fixing to the suspension bolt 3 is performed. Thereby, unlike the case of the first embodiment, there is no need to fasten the upper angle member 20 by tightening the nut 40 in a state where workability after the renewal ceiling suspension member 1 is fixed to the suspension bolt 3 is poor. More improved. In this embodiment as well, step S20 for carrying the update ceiling member 1 to the back of the ceiling may be omitted.

<Embodiment 4>
Next, an update ceiling member 1A according to Embodiment 4 of the present invention will be described with reference to FIGS. FIG. 20 shows the overall structure of the update ceiling member 1A. 21 and 22 are enlarged views of regions XXI and XXII in FIG. FIG. 23 shows a state in which the lower angle member 10 is viewed from the longitudinal direction. FIG. 24 shows the upper angle member 20 as viewed from the longitudinal direction.

  As shown in FIGS. 21 and 22, 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. 23, 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. 24, 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 configuration, the upper angle member 20 and the lower angle member 10 are rotated around the connecting portion 1A to change the mutual connection angle θ and are folded. Can quickly open into a frame shape.

<Embodiment 5>
Next, a description will be given of an update ceiling member 1B according to Embodiment 5 of the present invention. The renewal ceiling suspension member 1B according to the fifth embodiment has basically the same configuration as that of the first embodiment and has the same effect, but the rotation of the upper angle member 20 and the lower angle member 10 is the same. A difference is that a connecting plate member 34 having a pair of claw portions 34B is used as a rotation preventing portion for preventing movement.

  FIG. 25 is a perspective view of the upper and lower angle members 20 and 10 before being fixed, and FIG. 26 is a view of the lower angle member 10 as viewed from the longitudinal direction before the fixing. 27 is a perspective view of the upper and lower angle members 20 and 10 after being fixed, FIG. 28 is a view of the lower angle member 10 as viewed from the longitudinal direction in the fixed state, and FIG. 29 is fixed. It is the figure which looked at the upper side angle member 20 from the longitudinal direction in the back state. FIG. 30 is a perspective view of the connecting plate 34.

  As shown in FIGS. 27 and 28, the upper and lower angle members 20, 10 include a connecting bolt 35 that is not provided with a root portion, and a connecting plate member 34 that is attached to a tip portion 37 of the connecting bolt 35. Is restrained in the vertical direction. That is, in this embodiment, the connecting member is constituted by the connecting bolt 35 and the connecting plate member 34. In the connection bolt 35, the head portion 36 contacts the upper surface 21, the main body portion vertically penetrates the upper angle member 20, and the tip portion 37 is located in the rail groove 15 of the lower angle member 10.

  As shown in FIG. 25, the connecting plate 34 is a rectangular member accommodated in the rail groove 15. As shown in FIG. 30, the connecting plate member 34 includes a rectangular main body portion 34A and a pair of claw portions 34B provided at both ends of the main body portion 34A in the longitudinal direction. An insertion hole 34C into which the distal end portion 37 of the connection bolt 35 is inserted is formed in the approximate center of the main body portion 34A, and a screw portion that fits the connection bolt 35 is formed on the inner peripheral surface thereof. The pair of claw portions 34B protrudes in a direction perpendicular to the main body portion 34A.

  In a state before the upper and lower angle members 20 and 10 are fixed, the connecting plate 34 is placed on the second upper surface 11B in the rail groove 15 (FIG. 26). And in the state after fixation, the front-end | tip part 37 of the connection bolt 35 is inserted in the insertion hole 34C of the board | plate material 34 for a connection (FIG. 28). At this time, as shown in FIG. 29, both side surfaces 23 of the upper angle member 20 are sandwiched between the pair of claw portions 34B.

  When the upper and lower angle members 20 and 10 are to be rotated in the fixed state, the long side portion of the connecting plate member 34 (main body portion 34A) is locked by the side surface of the rail groove 15, and a pair of claw portions 34 </ b> B is locked by the side surface 23 of the upper angle member 20. For this reason, rotation with the upper side angle member 20 and the lower side angle member 10 is prevented, and connection angle (theta) is fixed. That is, in the present embodiment, the connecting plate member 34 functions as a rotation preventing unit that prevents the upper angle member 20 and the lower angle member 10 from rotating. Thereby, similarly to the case where the connection bolt 30 having the root portion 32 is used as in the first embodiment, the connection angle θ of the upper and lower angle members 20 and 10 can be fixed.

  In the present embodiment, it has been described that the connecting plate member 34 is used when the upper and lower angle members 20 and 10 are square, but the upper and lower angle members 20 and 10 as in the first embodiment. In the case where has a horizontally long flat shape, the connecting plate 34 may be used similarly.

(Other embodiments)
Finally, other embodiments of 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.

  In the ceiling suspension member 1 for update, the suspension bolt 3 may be fixed to the upper angle member 20 without being limited to the case where the suspension bolt 3 is fixed to the lower angle member 10. 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.

  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.

DESCRIPTION OF SYMBOLS 1 Ceiling member for update 1A Connection part 3 Hanging bolt 4 Indoor unit 10 Lower side angle member (1st angle member)
11 Upper surface 15 Rail groove (slide part)
20 Upper angle member (second angle member)
21A, 22A hole (slide part)
30 Connection bolt (connection member)
32 Root part (rotation prevention part)
32A Side surface 34 Connection plate (rotation prevention part)
θ Connection angle

Claims (6)

A pair of first angle members (10) having a shape extending in the longitudinal direction and fixed to the suspension bolt (3) on the ceiling;
A pair of second angle members (20) having a shape extending in the longitudinal direction and fixing the indoor unit (4);
A connecting member (30) for connecting the first angle member (10) and the second angle member (20) to each other;
At least one of the first angle member (10) and the second angle member (20) is provided with a slide portion (15, 21A, which includes a long hole or a groove for sliding the connecting member (30) along the longitudinal direction. 22A) is provided,
The connecting member (30) has the first angle member (10) and the second angle member (in the state before the first angle member (10) and the second angle member (20) are fixed to each other ). 20) is allowed to rotate around the connecting portion (1A) by the connecting member (30) while changing the connecting angle (θ) , and slides at the slide portions (15, 21A, 22A). possible Ru der, updated for the ceiling member (1). The second angle member (20) is disposed on the upper surface (11) of the first angle member (10),
The slide portion (15, 21A, 22A) is provided along the longitudinal direction of the first angle member (10) on the upper surface (11), and the rail groove (15) in which the connecting member (30) is disposed. The suspension member for update (1) according to claim 1, comprising:   The slide part (15, 21A, 22A) is provided along the longitudinal direction of the second angle member (20) and includes a hole (21A, 22A) into which the connection member (30) is inserted. The suspension member for update (1) according to 1 or 2.   The connection member (30) has a rotation prevention unit (30) that prevents the first angle member (10) and the second angle member (20) from rotating so that the connection angle (θ) is fixed. The suspension member for updating (1) according to any one of claims 1 to 3, comprising 32, 34).   The rotation preventing part (32) is a part to be inserted into a hole (22A) formed in the second angle member (20), and a pair of surfaces parallel to the end surface of the hole (22A) ( The suspension member for updating (1) according to claim 4, which has a polygonal shape including 32A). A method for installing the renewal suspension member (1) according to any one of claims 1 to 5 on a ceiling,
Preparing the suspended ceiling member for update (1) in a folded state;
Opening the renewal suspension member (1) in a folded state so that the connection angle (θ) of the first angle member (10) and the second angle member (20) changes;
Fixing the opened ceiling suspension member (1) opened to a ceiling suspension bolt (3);
And fixing the indoor unit (4) to the update ceiling member (1) fixed to the suspension bolt (3).

Images