JP2017146064A - Ceiling hanging member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling hanging member capable of easily adjusting a fixing position of a hanging bolt in respect to an angle member and capable of restricting damage of the angle member.SOLUTION: A ceiling hanging member [1] comprises a lower angle member [10] fixed to a ceiling hanging bolt [3], an upper angle member [20] connected to the lower angle member [10] and having an indoor unit [4] fixed thereto and a hanging tool [50] fixed to the lower angle member [10] to fix the lower angle member [10] to the ceiling hanging bolt [3]. The hanging tool [50] includes an angle fixing part [51] having a closed shape to enclose an entire outer periphery of the lower angle member [10] and slidable along a longitudinal direction of the lower angle member [10] and a bolt fixing part [52] integrally formed with the angle fixing part [51] and formed to have a shape enabling the ceiling hanging bolt [3] to be fixed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ceiling suspension member.

  2. Description of the Related Art Conventionally, a ceiling suspension member that is used when an indoor unit or the like of an air conditioner is suspended from a ceiling 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 fixed to two parallel angle members, and the remaining two angles The indoor unit is fixed to the member. Examples of such a ceiling member are disclosed in Patent Documents 1 and 2 below.

  Patent Document 1 listed below is a ceiling suspension member in which four rectangular angle members are assembled in a well shape by a fixing bracket, and a suspension bolt is inserted into a hole formed in the angle member. Is disclosed. In Patent Document 2 below, in a ceiling suspension member provided with a suspension for fixing an angle member to a ceiling suspension bolt, a U-shaped latching portion for supporting the angle member in the suspension is provided. What is provided is disclosed.

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

  In Patent Document 1, a suspension bolt is inserted into a hole formed in the angle member, and the upper and lower surfaces of the angle member are sandwiched between nuts. In this structure, since stress is concentrated on the fixing portion of the suspension bolt in the angle member, there is a problem that the member is easily damaged. Moreover, when changing the fixing position of a suspension bolt, after removing a nut, it is necessary to reinsert a suspension bolt in another hole, and workability | operativity is bad. In Patent Document 2, the angle member is supported by a U-shaped latching portion, and stress tends to concentrate on the lower surface of the angle member. There is a problem that it is likely to occur.

  The present invention has been made in view of the above problems, and its purpose is for a ceiling suspension that can easily adjust the fixing position of the suspension bolt with respect to the angle member and can suppress the breakage of the angle member. It is to provide a member.

  A ceiling suspension member (1) according to one aspect of the present invention is connected to a first angle member (10) fixed to a suspension bolt (3) on a ceiling, and the first angle member (10). A second angle member (20) to which (4) is fixed, and a hanging tool attached to the first angle member (10) for fixing the first angle member (10) to the suspension bolt (3). (50). The hanging tool (50) has a closed shape so as to surround the entire outer periphery of the first angle member (10), and is an angle fixing portion slidable along the longitudinal direction of the first angle member (10). (51) and a bolt fixing part (52) formed integrally with the angle fixing part (51) and formed in a shape capable of fixing the suspension bolt (3).

  In the ceiling suspension member (1), the suspension tool (50) can be attached in a state of surrounding the entire outer periphery of the first angle member (10). Therefore, when the suspension bolt (3) is fixed, the stress applied to the first angle member (10) can be received by the entire outer periphery of the first angle member (10), and the local concentration of the stress is suppressed. can do. Thereby, damage to the first angle member (10) can be suppressed. Moreover, since the suspension tool (50) is slidable along the longitudinal direction of the first angle member (10), the suspension bolt (3) with respect to the first angle member (10) is slid by sliding the suspension tool (50). ) Can be easily adjusted.

  In the ceiling suspension member (1), the angle fixing portion (51) includes an upper fixing portion (53) facing the upper surface (11) of the first angle member (10) and the first angle member (10). And a side fixing portion (55) facing the side surface (13). The bolt fixing part (52) may extend horizontally from a connection part (P1) between the upper fixing part (53) and the side fixing part (55). The bolt fixing portion (52) is fastened to the suspension bolt (3) by being clamped by first and second fastening members (71, 81) attached to the suspension bolt (3). It may be configured. A thick wall portion (80) for connecting the lower surface (52D) on the base end side of the bolt fixing portion (52) and the side fixing portion (55) may be provided.

  In the ceiling suspension member (1), the angle fixing portion (51) includes an upper fixing portion (53) facing the upper surface (11) of the first angle member (10) and the first angle member ( 10), the lower fixing portion (54) facing the lower surface (12), and the side surface (13) of the first angle member (10), the upper fixing portion (53) and the lower fixing portion ( 54) and a side fixing portion (55) for connecting to the main body. The bolt fixing portion (52) may extend horizontally from the side fixing portion (55) at a height position between the upper fixing portion (53) and the lower fixing portion (54). Good. The bolt fixing portion (52) is fastened to the suspension bolt (3) by being clamped by first and second fastening members (71, 81) attached to the suspension bolt (3). It may be configured. A thick wall portion (80) for connecting the lower surface (52D) on the base end side of the bolt fixing portion (52) and the side fixing portion (55) may be provided.

  Thereby, even when a tensile stress is applied to the lower surface (52D) side of the base end portion of the bolt fixing portion (52) in the state of being fastened to the suspension bolt (3), the reinforcing portion is reinforced by the thick portion (80). Breakage of the hanger (50) can be prevented.

  In the ceiling suspension member (1), the bolt fixing portion (52) is provided with at least one of a first protrusion (52G) protruding upward and a second protrusion (52H) protruding downward. It may be done.

  Accordingly, even when the position of the suspension bolt (3) is shifted in a state where the bolt fixing portion (52) is fastened to the suspension bolt (3), the fastening members (71, 81) attached to the suspension bolt (3) ) Can be brought into contact with the first and second projecting portions (52G, 52H), and the suspension bolt (3) can be prevented from coming off from the bolt fixing portion (52).

  In the ceiling suspension member (1), the bolt fixing portion (52) may have a thickness greater than that of the angle fixing portion (51).

  The bolt fixing portion (52) has a larger load applied when fastened to the suspension bolt (3) than the angle fixing portion (51). For this reason, by forming the bolt fixing portion (52) thicker than the angle fixing portion (51), it is possible to more reliably prevent the suspension tool (50) from being damaged.

  In the ceiling suspension member (1), the bolt fixing portion (52) may be provided with an insertion hole (52A) for inserting the suspension bolt (3). An opening (P1) larger than the diameter (D) of the suspension bolt (3) may be formed in the insertion hole (52A).

  Thereby, the suspension bolt (3) can be inserted into the insertion hole (52A) through the opening (P1). Therefore, even when the fastening members (71, 81) larger than the diameter of the insertion hole (52A) are attached to the suspension bolt (3), the suspension bolt (3) can be inserted without removing it. , Workability is further improved.

  In the ceiling suspension member (1), the angle fixing portion (51) is located at a portion (54) facing the lower surface (12) of the first angle member (10) with respect to the first angle member (10). A position fixing part (54B) for fixing the position may be provided.

  Thus, even when the first angle member (10) is fixed to the ceiling suspension bolt (3), the position of the suspension (50) is adjusted from the lower surface (12) side of the first angle member (10). Can do.

  In the ceiling suspension member (1), the suspension tool (50) is configured such that the first angle member (10) and the second angle member (20) are closer to the end portion than the connection portion (1A). It may be attached to the angle member (10).

  Thereby, it can prevent that a hanger (50) moves inside a connection part (1A) in a 1st angle member (10).

  ADVANTAGE OF THE INVENTION According to this invention, the fixing member of the suspension bolt with respect to an angle member can be adjusted easily, and the member for ceiling suspension which can suppress the damage of an angle member can be provided.

It is a figure which shows the structure of the member for ceiling suspension concerning 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 member for ceiling suspension 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 member for ceiling suspension from the longitudinal direction. It is the figure which looked at the lifting tool which comprises the said member for ceiling suspensions from the upper direction. It is a figure which shows the state by which the said member for ceiling suspension was folded. It is a figure which shows the half-opened state of the said member for ceiling suspension. It is a figure which shows the state by which the said member for ceiling suspension was opened. It is a figure for demonstrating the procedure which inserts a suspension bolt in the insertion hole of a suspension tool. It is a figure for demonstrating the procedure which inserts a suspension bolt in the insertion hole of a suspension tool. It is a figure for demonstrating the procedure which inserts a suspension bolt in the insertion hole of a suspension tool. It is a figure which shows the state by which the said member for ceiling suspension was fixed to the suspension bolt. It is a figure which shows the state by which the indoor unit was fixed to the said member for ceiling suspension. It is a figure which shows the structure of the member for ceiling suspension concerning Embodiment 2 of this invention. It is a figure which shows the structure of the member for ceiling suspension which concerns on Embodiment 3 of this invention. It is a figure which shows the state before fixation of the said member for ceiling suspension in area | region XVII in FIG. 16, XVIII. It is a figure which shows the state after fixation of the said member for ceiling suspension in area | region XVII in FIG. 16, XVIII. It is the figure which looked at the lower angle member which comprises the said member for ceiling suspension from the longitudinal direction. It is the figure which looked at the upper side angle member which comprises the said member for ceiling suspension from the longitudinal direction.

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

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

  As shown in FIG. 1, the 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. These rod-shaped angle members 10 and 20 are connected in a rectangular (rectangular) frame shape. The ceiling suspension member 1 includes two parallel lower angle members 10 (first angle members) that are fixed to a ceiling suspension bolt, and two parallel upper angle members 20 (first members) to which the indoor unit is fixed. 2 angle members), four connecting bolts 30 and nuts 40 for connecting the upper angle member 20 and the lower angle member 10, and four suspension tools 50.

  The upper and lower angle members 20, 10 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. 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 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 11AA is provided in 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 protrudes upward from the first upper surface 11A so as to contact the inner surface. 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. 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.

  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 an end of the first lower surface 12A opposite to the extending surface 12AA, and the lower rib 12AB is in contact with the inner surface by projecting downward from the first lower surface 12A. . 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 in the horizontal direction 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 attached to the hanging tool 50 from the end portion of the lower angle member 10. A first stopper portion 61A is provided for preventing it from coming off. 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 in the horizontal direction from the connection 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, whereby the first stopper portion 62 </ b> A is bent. It is composed. The third angle reinforcing portion 63 extends in the horizontal direction 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. Further, the fourth angle reinforcing portion 64 extends in the horizontal direction 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 is a substantially quadrangular prism-shaped member having an upper surface 21, a lower surface 22, and a pair of side surfaces 23 that connect them, and in which a hollow portion surrounded by these surfaces is formed. The upper angle member 20 is disposed on the upper surface 11 of the lower angle member 10 on the lower surface 22.

  Holes 21 </ b> A and 22 </ b> A into which the connecting bolts 30 are inserted are formed in the upper and lower surfaces 21 and 22 of the angle main body 27. As shown in FIG. 1, the holes 21A and 22A are formed along the longitudinal direction of the upper angle member 20, so that the lower angle member 10 is slid along the longitudinal direction with the connecting bolt 30 inserted. Can be made. Further, the upper angle member 20 is provided with a pair of wall portions 24 that connect the upper surface 21 and the lower surface 22.

  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 in the horizontal direction from the connecting portion between the upper surface 21 and the one side surface 23. The second angle reinforcing portion 72 extends in the horizontal direction (in the direction opposite to the first angle reinforcing portion 71) from the connecting portion between the upper surface 21 and the other side surface 23. The third angle reinforcing portion 73 extends in a horizontal direction from a connection 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 formed on the upper surface 11 of the lower angle member 10. Has been placed. The fourth angle reinforcing portion 74 extends in a horizontal direction (in a direction opposite to the third angle reinforcing portion 73) from the connecting portion between the lower surface 22 and the other side surface 23 so as to be parallel to the second angle reinforcing portion 72. Provided 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 is disposed such that the head 33 abuts on the extending surface 11AA, penetrates the upper angle member 20 up and down, and the tip 31A protrudes from the upper surface 21. ing. Further, the connecting bolt 30 has a quadrangular root portion 32, and the rotation of the upper and lower angle members 20, 10 is prevented by fitting the root portion 32 into the hole 22A as shown in FIG. . Thereby, the connection angle of both angle members 20 and 10 can be fixed.

[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]
Next, the structure of the hanger 50, which is a characteristic part of the ceiling hung member 1, will be described with reference mainly to FIGS. The hanger 50 is a member for fixing the lower angle member 10 to the hanger bolt 3 on the ceiling, and is formed by extrusion molding of aluminum. As shown in FIG. 1, the hanging tool 50 is attached to each of the lower angle members 10 on the end side of the connecting portion 1A, and is slidable in the longitudinal direction. The hanger 50 includes an angle fixing part 51 that covers the lower angle member 10, and a bolt fixing part 52 that is formed integrally with the angle fixing part 51 and that can fix the suspension bolt 3. Have. Further, the bolt fixing portion 52 is formed so as to be thicker than the angle fixing portion 51. Thereby, the intensity | strength of the bolt fixing | fixed part 52 to which especially big load is applied when it fixes to the suspension bolt 3 can be improved.

  As shown in FIG. 3, the angle fixing portion 51 has a closed shape so as to surround the entire outer periphery of the lower angle member 10. More specifically, the angle fixing portion 51 includes a flat plate-like upper fixing portion 53 that faces the upper surface 11 of the lower angle member 10 and a flat plate-like lower fixing portion that faces the lower surface 12 of the lower angle member 10. 54 and a side fixing portion 55 that faces the side surface 13 of the lower angle member 10 and connects the end portion of the upper fixing portion 53 and the end portion of the lower fixing portion 54. The side fixing portion 55 includes a first side fixing portion 55A that connects one end of the upper fixing portion 53 and one end of the lower fixing portion 54, the other end of the upper fixing portion 53, and the other end of the lower fixing portion 54. 2nd side fixing | fixed part 55B which connects these.

  The angle fixing part 51 is formed in a square shape along the outer periphery of the lower angle member 10 by connecting the upper, lower and side fixing parts 53 to 55 to each other. There is a space in which the lower angle member 10 is disposed. In addition, the angle fixing portion 51 is slidable along the longitudinal direction in contact with the extending surfaces 11AA and 12AA and the ribs 11AB and 12AB on the inner surface and with a gap with respect to the first upper surface 11A and the first lower surface 12A. It has become. As described above, by forming a gap between the inner surface of the angle fixing portion 51 and the outer surface of the lower angle member 10, it is possible to further reduce friction when the angle fixing portion 51 is slid.

  A through hole 54B penetrating in the thickness direction is formed in the lower fixing portion 54, and a screw portion of a fixing bolt 60 is inserted into the through hole 54B as shown in FIG. The fixing bolt 60 has a tip protruding below the lower surface of the lower fixing portion 54, and a fixing nut 65 is attached to the tip. After adjusting the position of the hanger 50 by sliding the angle fixing part 51 as described above, the position of the angle fixing part 51 with respect to the lower angle member 10 is secured by tightening the fixing nut 65 with respect to the fixing bolt 60. Can be fixed. That is, the through hole 54 </ b> B functions as a position fixing portion for fixing the position of the angle fixing portion 51 with respect to the lower angle member 10.

  The bolt fixing portion 52 extends horizontally from the connection portion P1 between the upper fixing portion 53 and the first side fixing portion 55A. The bolt fixing portion 52 has an upper surface 52C and a lower surface 52D opposite to the upper surface 52C, and the first washer 71 (first tightening member) attached to the suspension bolt 3 as shown in FIG. The second washer 81 contacts the lower surface 52D while contacting the 52C. The bolt fixing portion 52 is fastened to the suspension bolt 3 by tightening the first and second nuts 72 and 82 in a state where the upper and lower surfaces 52C and 52D are sandwiched by the first and second washers 71 and 81. It is configured.

  The bottom surface 52D on the base end side of the bolt fixing portion 52 and the outer surface on the connection portion P1 side in the first side fixing portion 55A are connected by a thick portion 80 (shaded portion in the figure). That is, the portion on the lower surface 52D side at the base end portion of the bolt fixing portion 52 is reinforced by the thick portion 80. Further, as shown in FIG. 3, the thick portion 80 may be provided in a curved surface shape convex toward the connection portion P1, or may be provided in a curved shape that bulges away from the connection portion P1. Good. Thereby, by fastening the bolt fixing portion 52 to the suspension bolt 3, an upward force is applied to the bolt fixing portion 52, and even when a tensile stress is applied to the lower surface 52D side of the base end portion, the bolt fixing portion 52 Can be prevented from breaking from the angle fixing portion 51. In particular, in this embodiment, since the hanging tool 50 is made of aluminum having a low strength against tensile stress, the reinforcement measure by the thick portion 80 is effective.

  As shown in FIG. 3, since the bolt fixing portion 52 extends horizontally from the upper fixing portion 53, a space is provided between the lower surface 52 </ b> D of the bolt fixing portion 52 and the lower surface of the lower fixing portion 54. It is done. For this reason, the front-end | tip part of the suspension bolt 3 can be located in the said space, and it can prevent that the said front-end | tip part protrudes below the lower side fixing | fixed part 54. FIG. That is, the space can be used as a space in which the tip of the suspension bolt 3 is accommodated.

  FIG. 6 shows a state when the hanging tool 50 is viewed from above. The bolt fixing portion 52 is formed with an insertion hole 52A for inserting the suspension bolt 3. As shown in FIG. 6, the insertion hole 52 </ b> A has a long hole shape having a long axis in the width direction of the hanger 50, and is longer than the diameter D of the hanger bolt 3. Thereby, the hanging tool 50 can be moved in a state where the hanging bolt 3 is inserted into the insertion hole 52A.

  The bolt fixing portion 52 has a pair of extending portions 52F extending from the portions 53E on both sides in the width direction of the upper fixing portion 53. As shown in FIG. 6, the pair of extending portions 52F is provided along the outer periphery of the insertion hole 52A. A gap between the distal ends of the pair of extending portions 52F is an opening P1 of the insertion hole 52A. The opening P <b> 1 has a width W <b> 1 that is larger than the diameter D of the suspension bolt 3 and smaller than the outer diameters of the first and second washers 71 and 81 so that the suspension bolt 3 can be inserted.

  As shown in FIG. 2, the extended end of the bolt fixing portion 52 is provided with a first protruding portion 52G protruding upward and a second protruding portion 52H protruding downward. The first protruding portion 52G is provided for the purpose of preventing the first washer 71 from coming off, and extends vertically upward from the tip of each extending portion 52F. The first protrusion 52G preferably has a height equal to or greater than the thickness of the first washer 71. Thereby, even when the position of the suspension bolt 3 is shifted while the bolt fixing portion 52 is fastened, the side surface of the first washer 71 is in contact with the first protruding portion 52G to prevent the suspension bolt 3 from coming off. Can do.

  The second protruding portion 52H is provided for the purpose of preventing the second washer 81 from coming off, and extends vertically downward from the tip of each extending portion 52F. The second protrusion 52H preferably has a height equal to or greater than the thickness of the second washer 81. Thereby, when the position of the suspension bolt 3 is shifted, the side surface of the second washer 81 comes into contact with the second protrusion 52H, so that the second protrusion 52H functions as a retaining portion of the second washer 81. In addition, it is not limited to when both the 1st and 2nd protrusion parts 52G and 52H are provided, Only either one may be provided.

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

  First, a step of preparing the suspended member 1 in a folded state is performed. In this step, as shown in FIG. 7, a box 2 in which the ceiling suspension member 1 in a folded state is packed is prepared, and the ceiling suspension member 1 is taken out from the box 2. Then, the ceiling suspension member 1 is conveyed to the installation place on the back of the ceiling through the opening of the ceiling in a folded state.

  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 and are temporarily fixed by the connecting bolt 30 and the nut 40. In this temporarily fixed state, the connecting angle can be adjusted by rotating the upper angle member 20 and the lower angle member 10 with each other about the connecting portion.

  Next, the step of opening the ceiling suspension 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-opening as shown in FIG. 8, the upper angle member 20 and the lower angle member 10 are in a state of being perpendicular to each other as shown in FIG. 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. Then, 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 at approximately 90 °. In this state, the upper angle member 20 and the lower angle member 10 are not completely fixed, and the upper angle member 20 can be slid along the rail groove 15.

  Next, a step of fixing the 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 against the fixing bolt 60.

  Next, the first and second washers 71 and 81 and the first and second nuts 72 and 82 are attached to each of the four suspension bolts 3 (FIG. 10). And in each suspension bolt 3, the position of the 2nd nut 82 is adjusted so that the height position of the 2nd washer 81 may become substantially the same. Next, 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 as shown in FIG. Then, the hanger 50 is placed on the second washer 81 with the lower surface 52 </ b> D of the bolt fixing portion 52 in contact with the second washer 81.

  At this time, since the height position of the second washer 81 is adjusted in advance, the lower angle member 10 is placed in a horizontal state. In addition, when inserting the suspension bolt 3 into the insertion hole 52 </ b> A, the operator can visually recognize the positional relationship between the second washer 81 and the side surface of the angle fixing portion 51 by looking up from below. The reason why the positional relationship between the second washer 81 and the side surface of the angle fixing portion 51 is visible in this manner is that the bolt fixing portion 52 extends horizontally from the upper portion of the angle fixing portion 51 as described above. is there.

  Then, as shown in FIG. 12, the first washer 71 is brought into contact with the upper surface 52 </ b> C of the bolt fixing portion 52, and the first and second nuts 72 and 82 are tightened. As a result, the lifting tool 50 is clamped by the first and second nuts 72 and 82 while being held by the first and second washers 71 and 81, and the fixing of the lower angle member 10 to the suspension bolt 3 is completed. .

  Then, the upper angle member 20 is slid in the ceiling suspended state shown in FIG. 13, and the position is adjusted to match the pitch of the indoor unit. Then, the upper angle member 20 and the lower angle member 10 are completely fixed by tightening the nut 40 with respect to the connecting bolt 30.

  Next, the step of fixing the indoor unit is performed. In this step, as shown in FIG. 14, 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 up and down by two nuts attached to the bolt 5. Thereby, as shown in FIG. 14, the indoor unit 4 is fixed to the upper angle member 20. Through the steps as described above, the ceiling suspension member 1 is installed on the ceiling, and the indoor unit 4 is installed.

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

  The ceiling suspension member 1 includes a lower angle member 10 that is fixed to the ceiling suspension bolt 3, an upper angle member 20 that is connected to the lower angle member 10 and to which the indoor unit 4 is fixed, and a lower angle member 10. And a hanging tool 50 for fixing the lower angle member 10 to the hanging bolt 3. The hanger 50 has a closed shape so as to surround the entire outer periphery of the lower angle member 10, and an angle fixing portion 51 that can slide along the longitudinal direction of the lower angle member 10, and the angle fixing portion 51. And a bolt fixing portion 52 formed in a shape capable of fixing the suspension bolt 3.

  In the ceiling suspension member 1, the suspension tool 50 can be attached in a state of surrounding the entire outer periphery of the lower angle member 10. Therefore, the stress applied to the lower angle member 10 when the suspension bolt 3 is fixed can be received by the entire outer periphery of the lower angle member 10, and the stress can be prevented from being concentrated locally. Thereby, damage to the lower angle member 10 can be suppressed. Moreover, since the hanging tool 50 can be slid along the longitudinal direction of the lower angle member 10, the fixing position of the suspension bolt 3 with respect to the lower angle member 10 can be easily adjusted by sliding the hanging tool 50. Can do.

  In the ceiling suspension member 1, the angle fixing portion 51 includes an upper fixing portion 53 that faces the upper surface 11 of the lower angle member 10 and a side fixing portion 55 that faces the side surface 13 of the lower angle member 10. Contains. The bolt fixing portion 52 extends horizontally from the connection portion P1 between the upper fixing portion 53 and the side fixing portion 55. The bolt fixing portion 52 is configured to be fastened to the suspension bolt 3 by being sandwiched between first and second washers 71 and 81 attached to the suspension bolt 3. A thick portion 80 that connects the lower surface 52D on the base end side of the bolt fixing portion 52 and the side fixing portion 55 is provided.

  Thereby, even when a tensile stress is applied to the lower surface 52D side of the base end portion of the bolt fixing portion 52 in a state of being fastened to the suspension bolt 3, the suspension portion 50 can be prevented from being damaged by being reinforced by the thick portion 80. Can do.

  In the ceiling suspension member 1, the bolt fixing portion 52 is provided with a first protrusion 52G protruding upward and a second protrusion 52H protruding downward. Thereby, even when the position of the suspension bolt 3 is shifted in a state in which the bolt fixing portion 52 is fastened to the suspension bolt 3, the first and second washers 71 and 81 attached to the suspension bolt 3 are moved to the first and second positions. The projecting portions 52G and 52H can be brought into contact with each other, and the suspension bolt 3 can be prevented from being detached from the bolt fixing portion 52.

  In the ceiling suspension member 1, the bolt fixing portion 52 is thicker than the angle fixing portion 51. The bolt fixing portion 52 has a larger load applied when fastened to the suspension bolt 3 than the angle fixing portion 51. For this reason, by forming the bolt fixing portion 52 to be thicker than the angle fixing portion 51, it is possible to more reliably prevent the suspension tool 50 from being damaged.

  In the ceiling suspension member 1, the bolt fixing portion 52 is provided with an insertion hole 52 </ b> A for inserting the suspension bolt 3. An opening P1 larger than the diameter D of the suspension bolt 3 is formed in the insertion hole 52A. Accordingly, the suspension bolt 3 can be inserted into the insertion hole 52A through the opening P1. Therefore, even when the first and second washers 71, 81 larger than the diameter of the insertion hole 52A are attached to the suspension bolt 3, the suspension bolt 3 can be inserted without removing the first and second washers 71, 81. improves.

  In the ceiling suspension member 1, the angle fixing portion 51 is provided with a position fixing portion 54 </ b> B for fixing the position with respect to the lower angle member 10 at a portion 54 facing the lower surface 12 of the lower angle member 10. . Thereby, even when the lower angle member 10 is fixed to the suspension bolt 3 on the ceiling, the position of the hanger 50 can be adjusted from the lower surface 12 side of the lower angle member 10.

  In the ceiling suspension member 1, the hanger 50 is attached to the lower angle member 10 on the end side of the connecting portion 1 </ b> A between the lower angle member 10 and the upper angle member 20. Thereby, it is possible to prevent the hanger 50 from moving inward of the connecting portion 1A in the lower angle member 10.

<Embodiment 2>
Next, a ceiling suspension member 1A according to Embodiment 2 of the present invention will be described with reference to FIG. In the second embodiment, only parts different from the first embodiment will be described.

  FIG. 15 shows a state in which the lower angle member 10 is viewed from the longitudinal direction in the ceiling suspension member 1A. As shown in FIG. 15, the bolt fixing portion 52 extends horizontally from the first side fixing portion 55 </ b> A at a height position between the upper fixing portion 53 and the lower fixing portion 54. More specifically, the bolt fixing portion 52 extends horizontally from an intermediate height position between the upper fixing portion 53 and the lower fixing portion 54. The bolt fixing portion 52 is not limited to the case where the bolt fixing portion 52 is extended from an intermediate height position, and may be extended from a position near the upper fixing portion 53 or extended from a position near the lower fixing portion 54. May be provided.

  Thus, even when the bolt fixing portion 52 is extended from the height position between the upper fixing portion 53 and the lower fixing portion 54, the lower surface 52D of the base end portion of the bolt fixing portion 52 is the same as in the first embodiment. The thick wall portion 80 can be provided on the side for reinforcement, and the hanger 50 can be prevented from being damaged. Further, the tip of the suspension bolt 3 can be positioned in the space between the lower surface 52D of the bolt fixing portion 52 and the lower surface of the lower fixing portion 54, and the tip portion protrudes below the lower fixing portion 54. Can be prevented. Further, when the suspension bolt 3 is inserted into the insertion hole 52 </ b> A of the bolt fixing portion 52, the positional relationship between the second washer 81 and the side surface of the angle fixing portion 51 can be visually confirmed.

<Embodiment 3>
Next, an update ceiling member 1B according to Embodiment 3 of the present invention will be described with reference to FIGS. FIG. 16 shows the overall structure of the update ceiling member 1B. 17 and 18 are enlarged views of regions XVII and XVIII in FIG. FIG. 19 shows a state in which the lower angle member 10 is viewed from the longitudinal direction. FIG. 20 shows the upper angle member 20 as viewed from the longitudinal direction. In the third embodiment, only parts different from the first embodiment will be described.

  As shown in FIGS. 17 and 18, the bolt fixing portion 52 includes a first extending portion 95 extending horizontally from the upper portion of the angle fixing portion 51, and extending horizontally from the lower portion of the angle fixing portion 51. A second extending portion 96. Further, the lower surface of the first extending portion 95 and the upper surface of the second extending portion 96 are connected to each other by a wall portion 97.

  As shown in FIG. 19, 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> A 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. 20, 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 1 </ b> B having the above-described configuration, the angle fixing portion 51 surrounds the entire outer periphery of the lower angle member 10, thereby lowering the stress applied to the lower angle member 10 when the suspension bolt 3 is fixed. It can be received by the entire outer periphery of the angle member 10. Moreover, the fixing position of the suspension bolt 3 with respect to the lower angle member 10 can be easily adjusted by sliding the suspension tool 50 along the longitudinal direction of the lower angle member 10.

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

  The ceiling-suspended member 1 is not limited to a case where the existing indoor unit is removed and replaced with a new indoor unit, and is also used when a new indoor unit is installed on a ceiling where the indoor unit is not installed. be able to.

  The ceiling suspension member 1 is not limited to the case where the suspension bolt 3 is fixed to the lower angle member 10, and the suspension bolt 3 may be fixed to the upper angle member 20. 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.

  The bolt fixing portion 52 may extend horizontally from the connection portion between the lower fixing portion 54 and the first side fixing portion 55A. Further, the angle fixing part 51 and the bolt fixing part 52 may be formed with the same thickness.

  The first and second projecting portions 52G and 52H are not limited to those perpendicular to the upper and lower surfaces 52C and 52D of the bolt fixing portion 52, and may form an acute angle or an obtuse angle. Moreover, it is not limited to the case where it forms in the extension end of the bolt fixing | fixed part 52, You may form in the site | part inside an extension end. Moreover, you may abbreviate | omit the 1st and 2nd protrusion parts 52G and 52H.

  The insertion hole 52A may be a closed hole in which the opening P1 is not formed.

  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 3 Suspension bolt 10 Lower angle member 11 Upper surface 12 Lower surface 20 Upper angle member 50 Lifting tool 51 Angle fixing part 52 Bolt fixing part 52A Insertion hole 52G 1st protrusion part 52H 2nd protrusion part 53 Upper fixing part 54 Lower fixing part 54B Through hole (position fixing part)
55 Side fixing portion 71 First washer (first tightening member)
72 Second washer (second tightening member)
80 Thick part P1 opening

Claims (9)

A first angle member (10) fixed to the ceiling suspension bolt (3);
A second angle member (20) connected to the first angle member (10) and to which the indoor unit (4) is fixed;
A suspension tool (50) attached to the first angle member (10) and for fixing the first angle member (10) to the suspension bolt (3),
The hanger (50)
An angle fixing portion (51) having a closed shape so as to surround the entire outer periphery of the first angle member (10) and being slidable along the longitudinal direction of the first angle member (10);
A ceiling suspension member (1), including a bolt fixing portion (52) formed integrally with the angle fixing portion (51) and capable of fixing the suspension bolt (3). The angle fixing part (51)
An upper fixing portion (53) facing the upper surface (11) of the first angle member (10);
A side fixing portion (55) facing the side surface (13) of the first angle member (10),
The bolt fixing part (52)
It extends horizontally from the connection between the upper fixing part (53) and the side fixing part (55),
It is comprised so that it may be fastened by the said suspension bolt (3) by pinching with the 1st and 2nd clamping member (71, 81) attached to the said suspension bolt (3). The member (1) for ceiling suspension as described. The angle fixing part (51)
An upper fixing portion (53) facing the upper surface (11) of the first angle member (10);
A lower fixing portion (54) facing the lower surface (12) of the first angle member (10);
A side fixing part (55) facing the side surface (13) of the first angle member (10) and connecting the upper fixing part (53) and the lower fixing part (54);
The bolt fixing part (52)
Extending horizontally from the side fixing part (55) at a height position between the upper fixing part (53) and the lower fixing part (54),
It is comprised so that it may be fastened by the said suspension bolt (3) by pinching with the 1st and 2nd clamping member (71, 81) attached to the said suspension bolt (3). The member (1) for ceiling suspension as described.   The ceiling according to claim 2 or 3, wherein a thick portion (80) is provided to connect the lower surface (52D) on the base end side of the bolt fixing portion (52) and the side fixing portion (55). Hanging member (1).   The bolt fixing portion (52) is provided with at least one of a first protrusion (52G) protruding upward and a second protrusion (52H) protruding downward. Any one of the members (1) for hanging from the ceiling.   The member for ceiling suspension (1) according to any one of claims 1 to 5, wherein a thickness of the bolt fixing portion (52) is larger than a thickness of the angle fixing portion (51). The bolt fixing portion (52) is provided with an insertion hole (52A) for inserting the suspension bolt (3),
The member for ceiling suspension according to any one of claims 1 to 6, wherein an opening (P1) larger than a diameter (D) of the suspension bolt (3) is formed in the insertion hole (52A). (1).   The angle fixing portion (51) is a position fixing portion (for fixing a position with respect to the first angle member (10) at a portion (54) facing the lower surface (12) of the first angle member (10)). The member for ceiling suspension (1) according to any one of claims 1 to 7, wherein 54B) is provided.   The said hanger (50) is attached to the said 1st angle member (10) in the edge part side rather than the connection part (1A) of the said 1st angle member (10) and the said 2nd angle member (20). The member for ceiling suspension (1) according to any one of claims 1 to 8.

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