JP2008095353A - Ceiling structure and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling structure which enables a clearance between a parting material and a side wall to open toward a space in a ceiling, without impairing design, and a construction method for the ceiling structure. <P>SOLUTION: This ceiling structure 1 mainly comprises: a ceiling bed material 10 which is supported in a hanging manner on a suspension member 50, with a space from the side wall W; a ceiling board 20 which is supported on the ceiling bed material 10; the parting material 30 which is fixed to the ceiling bed material 10, and which covers an end of the ceiling bed material 10, facing the side wall W, and an end of the ceiling board 20; and a blind member 40 which is protruded from the side wall W below the clearance between the side wall W and the parting material 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ceiling structure and a construction method thereof, and more particularly to a structure of an end portion of a suspended ceiling and a construction method thereof.

  The ceiling structure is configured, for example, by suspending and supporting a ceiling base material arranged in a lattice form from an upper floor slab or the like, and fitting a ceiling plate into a space defined by the ceiling base material. Conventionally, as described in Patent Document 1, for example, an end portion of a ceiling base material has been connected to a peripheral edge of a substantially L-shaped cross-sectional view fixed to a side wall.

In recent years, in order to prevent a ceiling base material and a ceiling board from colliding with a side wall and falling due to seismic motion or the like, the ceiling base material and the ceiling board are sometimes installed at a distance from the side wall.
For example, in Patent Document 2, a lattice-like ceiling base material is suspended and supported at a distance from a side wall, and an L-shaped peripheral edge is fixed to the side wall, and a cross-section disposed opposite the peripheral edge. A ceiling structure is described in which a ceiling plate is bridged between a ceiling base material having a substantially inverted T-shape and a surrounding edge.

JP 2004-332477 A (FIGS. 1 and 8) Japanese Utility Model Publication No. 62-54103 (FIG. 4)

In addition, as a countermeasure against earthquakes, the inventors have suspended and supported a lattice-like ceiling base material 101 at a distance from the side wall W as shown in FIG. 102, the peripheral edge 103 having an L-shape in cross section is fixed to the side wall W, and the width dimension D ₁ of the peripheral edge 103 extending from the side wall W is larger than the distance D ₂ between the side wall W and the ceiling base material 101. The ceiling structure 100 which covers the clearance gap between the side wall W and the ceiling base material 101 by enlarging it was devised.

  In such a ceiling structure 100, the parting material 109 for adjusting the end of the finished surface is installed at the end 101a of the ceiling base material 101 and the end 102a of the ceiling plate 102 facing the side wall W. Conventionally, the parting material 109 is suspended and supported at a position separated from the side wall W by a parting material suspension member 105 or the like (more specifically, a parting material suspension bolt 105a and a parting material suspension fitting 105b). .

  In addition, although illustration is abbreviate | omitted, the parting material 109 may be suspended and supported by the base | substrate receiving material (illustration omitted) which supports the ceiling base material 101. FIG.

  On the other hand, the inventors are developing a ceiling structure in which the gap between the side wall W and the parting material 109 is used as, for example, an air inlet of the air conditioning equipment in the structure shown in FIG.

  However, if the peripheral edge 103 is removed in order to secure the opening width necessary for intake, the structure behind the ceiling is exposed, and the design of the ceiling structure is impaired. In addition, dust on the back of the ceiling may fall into the indoor space.

  Further, as shown by a dashed line in FIG. 8, if the peripheral edge 103 ′ is separated downward from the ceiling base material 101, it can be used in the vicinity of the side wall W although it can prevent the back of the ceiling and dust from falling. The space in the height direction is reduced, and convenience is impaired.

  Further, as shown by a two-dot chain line in FIG. 8, when the surrounding edge 103 ″ is arranged above the ceiling base material 101, the parting material suspension member 105 that suspends and supports the parting material 109 is provided. Therefore, it is difficult to dispose the peripheral edge 103 above the ceiling base material 101.

  The present invention was devised in view of these problems, and a ceiling structure capable of opening a gap between a parting material and a side wall toward a ceiling space without impairing design and a construction method thereof. The issue is to provide.

  The ceiling structure according to the present invention includes a ceiling base material suspended and supported by a suspension member at a distance from a side wall, a ceiling plate supported by the ceiling base material, and fixed to the ceiling base material. A parting material covering the end part of the ceiling base material and the end part of the ceiling plate facing each other, and a blindfold member projecting from the side wall above the gap between the side wall and the parting material. It is characterized by.

  According to such a configuration, since the parting material covering the end of the ceiling base material facing the side wall and the end of the ceiling plate is fixed to the ceiling base material, there is no need for the parting material suspension member, and the blind part is hidden. The member can be disposed above the ceiling base material. Therefore, it is possible to open the gap toward the ceiling space while preventing the back of the ceiling from being exposed from the gap between the parting material and the side wall.

  In addition, two protrusions having thread grooves on inner walls facing each other are formed in parallel along the longitudinal direction at the upper end of the ceiling base material, and the parting material contacts the upper end of the ceiling base material. It is preferable to have a configuration in which the parting material is fixed to an end of the ceiling base material by having an upper contact part and a screw passing through the upper contact part engaging with the screw groove. .

According to such a configuration, the parting material becomes the ceiling base material by the screw that penetrates the upper abutment portion engaging with the screw groove formed on the inner wall surface facing the two protrusions at the upper end of the ceiling base material. Since it is fixed, the parting material can be easily and firmly fixed to the ceiling base material.
In addition, since the ceiling base material and the parting material can be fixed with screws, a special connection fitting is not required, and the number of members and cost can be reduced.

  Moreover, it is preferable that the distance between the blindfold member and the suspension member is greater than or equal to the distance between the side wall and the parting material.

  According to such a configuration, the blind structure does not collide with the suspension member before the parting material collides with the side wall due to shaking such as an earthquake, so that the ceiling structure is not damaged or dropped. Therefore, the gap between the side wall and the parting material can be opened toward the ceiling back space without impairing not only the design but also the safety of the ceiling structure.

  In addition, it is preferable that the air intake means is disposed above the ceiling base material.

  According to this configuration, since the air intake means is disposed above the ceiling base material, when the air intake means is operated, the air in the indoor space flows from the gap between the parting material and the side wall to the back of the ceiling. Therefore, the gap between the parting material and the side wall can be effectively used as an air inlet. Further, since air flows from the indoor space to the ceiling, dust or the like on the ceiling does not fall from the gap between the parting material and the side wall.

  Moreover, the construction method of the ceiling structure according to the present invention is the construction method of the ceiling structure according to any one of claims 1 to 4, wherein the suspension member intersects with the ceiling base material. A step of disposing the base receiving material at a distance from the side wall, and a distance between the end of each ceiling base material facing the side wall and the base receiving material. Arranging the ceiling base materials with respect to the base receiving material so as to be constant.

  According to this method, even if the streets on the front side of the side wall are uneven due to the accuracy of construction at the site, each ceiling base material is based on the base receiving material made of factory products such as extruded molds and steel shapes. Since the position of the end is determined, the construction becomes easy. Moreover, since the street of the edge part of a ceiling base material does not become uneven, construction accuracy improves.

  According to the ceiling structure and its construction method according to the present invention, the gap between the parting material and the side wall can be opened toward the ceiling back space without impairing the design.

  The best mode for carrying out the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a perspective view of a ceiling structure according to the present embodiment. FIG. 2 is a side view of the end portion of the ceiling structure. 3 is a cross-sectional view taken along the line II of FIG.

  As shown in FIG. 1, the ceiling structure 1 according to the present embodiment is mainly supported by a ceiling base material 10 that is suspended and supported by a suspension member 50 at a distance from the side wall W, and the ceiling base material 10. The ceiling plate 20, the parting material 30 fixed to the ceiling base material 10 and covering the end of the ceiling base material 10 facing the side wall W and the end of the ceiling plate 20, and the gap between the side wall W and the parting material 30 The blindfold member 40 protrudes from the side wall W at the upper side. Hereinafter, each element of the ceiling structure 1 will be described.

As shown in FIG. 2, the ceiling base material 10 is a member that forms a skeleton of the ceiling structure 1, and is suspended and supported by a suspension member 50 at a position separated from the side wall W by a distance L ₁ . The ceiling base material 10 includes a plurality of main bars 10A arranged in parallel in a direction orthogonal to the side wall W and a plurality of cross bars 10B arranged in parallel in a direction orthogonal to the main bar 10A in a lattice shape. It is configured in combination. The main bar 10A and the cross bar 10B are formed in a predetermined cross-sectional shape by, for example, an aluminum extrusion mold.

As shown in FIG. 3, the main bar 10 </ b> A includes a web portion 11 that extends in the vertical direction and a flange portion 12 that extends in the lateral direction from the lower end of the web portion 11. On the upper end of the web portion 11, ridges 13 and 13 are formed extending upward in a bifurcated manner. In addition, on the bottom surfaces of both ends of the flange portion 12 in the width direction, ridges 14 and 14 extending downward are formed. These protrusions 13, 13, 14, and 14 serve as reinforcing ribs, and increase the strength of the main bar 10A. Screw grooves 13a and 13a are formed on the inner wall surfaces of the ridges 13 and 13 facing each other. The screw grooves 13a and 13a are made of, for example, irregularities formed in parallel with the longitudinal direction of the main bar 10A, and are engaged with screws 34 for fixing a parting material 30 to be described later.
Note that the cross-sectional shape of the cross bar 10B is the same as the cross-sectional shape of the main bar 10A, and thus detailed description thereof is omitted.

As shown in FIG. 2, the ceiling board 20 is a member which comprises the ceiling surface of the ceiling structure 1, for example, is comprised by the rock wool board, the gypsum board, etc. The ceiling board 20 is formed in a substantially square shape in plan view, and is installed in a space partitioned by the ceiling base material 10. A rib 21 (see FIG. 3) that engages with the flange portion 12 of the ceiling base material 10 is provided at the periphery of the ceiling back surface of the ceiling board 20 so as to extend in the horizontal direction.
In addition, although illustration is abbreviate | omitted, it cannot be overemphasized that an illumination box and an equipment plate may be installed instead of some ceiling boards 20 as needed.

  As shown in FIG. 2, the parting material 30 is a member for better showing the finish of the end portion on the side wall W side of the ceiling structure 1, and is fixed to the end portion on the side wall W side of the main bar 10 </ b> A. The parting material 30 is made of an aluminum extrusion mold material, and in this embodiment, is formed into a long member having a substantially U-shaped cross-sectional view with almost no irregularities on the outer surface in order to finish a clean and sharp impression. . The parting material 30 extends in a direction opposite to the side wall W from the upper end of the web part 31, a lower flange part 32 extending in the opposite direction to the side wall W from the lower end of the web part 31, and the web part 31. The upper flange portion 33 is an upper contact portion. The web portion 31 is formed to have a height dimension substantially equal to the height dimension of the main bar 10A, and includes an end portion 10a on the side wall W side of the main bar 10A and an end portion 20a on the side wall W side of the ceiling plate 20. It is covered. Further, the lower flange portion 32 covers the lower end 10b of the main bar 10A and the lower surface 20b of the ceiling board 20. Further, the upper flange portion 33 is in contact with the upper end 10c of the main bar 10A.

A gap S is provided between the web portion 31 and the side wall W. The gap S, that is, the distance L ₁ between the parting material 30 and the side wall W is set to be larger than the maximum horizontal displacement amount of the parting material 30 due to, for example, earthquake motion to be considered in the design of the ceiling structure 1. Yes.

  As shown in FIG. 3, the upper flange portion 33 is formed with a through-hole 33a for inserting the screw 34 at a position corresponding to the main bar 10A. The parting material 30 is fixed to the main bar 10A by engaging the screw 34 inserted through the through hole 33a with the screw grooves 13a, 13a formed on the inner wall surfaces of the protrusions 13, 13 of the main bar 10A. Yes.

As shown in FIG. 2, the blindfold member 40 is a member for preventing the back of the ceiling from being exposed from the gap S between the web portion 31 and the side wall W. The blind member 40 is formed in a substantially L-shaped cross section, for example, by an aluminum extrusion mold. More specifically, the blindfold member 40 includes a base portion 41 that abuts against the side wall W, a blindfold portion 42 that extends in the horizontal direction from the lower end of the base portion 41, and a folded portion provided at the tip of the blindfold portion 42. 43. The base 41 is fastened to the side wall W by screws 44. Eyes hidden portion 42 is a portion extending above the gap S between the parting member 30 and the side wall W, the width L ₂ is formed larger than the distance L ₁ between the parting member 30 and the side wall W Has been. The folded-back portion 43 is a portion for reinforcing the rigidity of the blindfold member 40 in the longitudinal direction, and is formed by folding the end portion of the blindfold portion 42 opposite to the side wall W into a substantially U shape in cross section. . Screening member 40, in order to communicate the gap S and the ceiling of the parting member 30 and the side wall W, and is located from parting member 30 at a position at a distance L ₄ upward.
In addition, the shape of the blindfold member 40 is not limited to this, For example, the folding | returning part 43 should just be provided as needed.

  As shown in FIG. 2, the suspension member 50 is a member for hanging and supporting the ceiling base material 10. The suspension member 50 mainly includes a suspension bolt 51, a suspension fitting 52, a base receiving material 53, a clip 54, and a spacer 55. The suspension bolt 51 is a long rod-shaped member having a thread groove on the outer peripheral surface. Although not shown, the upper end of the suspension bolt 51 is fixed to the upper floor slab or the lower surface of the beam. The suspension fitting 52 is a member that connects the suspension bolt 51 and the base receiving material 53. A suspension bolt 51 is inserted into the upper end of the suspension fitting 52, and is fixed at a predetermined height position by a lock nut. The lower end of the hanging metal fitting 52 is formed in a bowl shape so that the base receiving material 53 can be gripped. The base receiving material 53 is a long channel steel and is disposed in a direction orthogonal to the main bar 10A. The clip 54 is a substantially portal-shaped member in side view that connects the base receiving material 53 and the main bar 10A. The spacer 55 is a member for making the space between the base receiving material 53 and each main bar 10A constant, and is composed of a short member having a square cross section.

Here, in the suspension member 50 arranged along the side wall W, the distance L ₃ between the suspension member 50 and the blind member 40 is the distance L between the parting member 30 and the sidewall W with respect to the main bar 10A. _At least _one position is attached. Thereby, it is difficult for the suspension member 50 and the blindfold member 40 to collide with each other.

  As shown in FIG. 2, air intake means H for inhaling air from the back of the ceiling and discharging it to the outside is provided above the ceiling base material 10, that is, in the space behind the ceiling. The intake means H is composed of, for example, a ventilation fan. When the air behind the ceiling is sucked by the suction means H and the ceiling is in a negative pressure state, the air in the indoor space passes through the gap S (more specifically, through the gap between the parting material 30 and the blindfold member 40). It will flow into the ceiling space. Thereby, the clearance S between the parting material 30 and the side wall W functions as an intake port.

  Next, a method for constructing the ceiling structure 1 according to this embodiment will be described with reference to FIGS. 4 and 5. FIG.4 and FIG.5 is the side view showing the construction procedure of the ceiling structure 1 which concerns on this embodiment.

First, as shown in FIG. 4A, a base receiving material 53 is disposed via a suspension bolt 51 and a suspension fitting 52 at a position separated from the side wall W by a distance L ₅ .

Next, as shown in FIG. 4B, the plurality of main bars 10 </ b> A are sequentially attached to the base receiving material 53 using the clip 54 and the spacer 55. In this case, when you try from the end 10a of the main bar 10A the distance L ₅ to the side wall W constant, the wall surface Wa of the side wall W is the accuracy of the relationship between the construction site, a few millimeters with respect to the wall surface position in design Since the degree of unevenness occurs, the street of the end portion 10a of the main bar 10A is displaced. To prevent this, in this embodiment, it attached so that the distance L ₆ between the end portion 10a and the underlying image-receiving material 53 of the main bar 10A is constant. Since the underlying receiving material 53 good accuracy for a plant product (linearity), if the distance L ₆ is constant, will be aligned passes the ends 10a of the main bar 10A, therefore, the attachment of the cross bar 10B The streets at position 10d are also aligned.
The height position of the main bar 10 </ b> A is adjusted by inserting / removing a height adjusting screw 54 a provided on the upper portion of the clip 54.

  Next, as shown in FIG.4 (c), the crossbar 10B is attached to each main bar 10A, and the lattice-like ceiling base material 10 (refer FIG. 1) is constructed | assembled. At this time, since the streets of the attachment positions 10d of the crossbars 10B provided on each main bar 10A are aligned, the crossbar 10B can be easily attached to the main bar 10A. Further, since the streets of the mounting positions 10d of the crossbar 10B are aligned, it is easy to configure the shape of the space defined by the main bar 10A and the crossbar 10B into a designed shape (for example, a square shape). Become.

  Next, as shown in FIG. 5A, the ceiling board 20 is installed in a space partitioned by the main bar 10A and the cross bar 10B. At this time, since the space is configured to have a shape as designed, the ceiling board 20 can be easily installed.

Next, as shown in FIG. 5B, the parting material 30 is attached to the end 10a of the main bar 10A. In this case, the distance L ₁ between the parting member 30 and the side wall W is set to an interval so as not to collide with the earthquake. The parting material 30 is attached to the upper end 10c of the main bar 10A by a screw 34, but the thread groove 13a that engages with the screw 34 extends along the longitudinal direction of the main bar 10A. The mounting position can be finely adjusted. Moreover, even if the streets of the end 10a of the main bar 10A are uneven, the parting material 30 can be appropriately attached.

Next, as shown in FIG. 5C, the blindfold member 40 is installed above the gap S between the side wall W and the parting material 30. Specifically, the blindfold 42 is disposed above the gap S by fastening the base 41 of the blindfold 40 to the side wall W with screws 44. As a result, the gap S between the parting material 30 and the side wall W opens toward the ceiling space without exposing the ceiling. The distance L ₃ between the lower member 50 suspending the folded portion 43 of the screening member 40, both so as not to collide during an earthquake, it is set to a distance L ₁ or more and parting member 30 and the side wall W.
Thus, the ceiling structure 1 according to the present embodiment is completed.

It continues and demonstrates the effect of the ceiling structure 1 which concerns on this embodiment with reference to FIG.
According to the ceiling structure 1 according to the present embodiment, the parting material 30 is fixed to the end of the ceiling base material 10 (more specifically, the main bar 10A) on the side wall W side. The material suspension member 105 (see FIG. 8) becomes unnecessary. Therefore, the blindfold member 40 can be disposed above the gap S between the parting material 30 and the side wall W. Thereby, the clearance gap S can be opened toward ceiling back space, without impairing the design property and convenience in the edge part of the ceiling structure 1. FIG.

  Moreover, according to the ceiling structure 1 according to the present embodiment, the screw 34 penetrating the upper flange portion 33 of the parting material 30 is inserted into the screw grooves 13a, 13a of the ridges 13, 13 provided at the upper end of the main bar 10A. Since the parting material 30 is fixed to the main bar 10A by engaging, the parting material 30 can be easily and firmly fixed to the main bar 10A. Moreover, since the main bar 10A and the parting material 30 can be fixed with the screw 34, a special connection metal fitting is not required and the number of members and cost can be reduced.

Further, according to the ceiling structure 1 of this embodiment, the distance L ₃ between the lower member 50 hanging the screening member 40 is set to a distance L ₁ or more and parting member 30 and the side wall W, earthquakes, etc. The blindfold member 40 does not collide with the suspension member 50 before the parting material 30 collides with the side wall W due to the shaking of the ceiling, and it is possible to prevent the ceiling structure 1 from being damaged and dropped due to an earthquake. Therefore, not only the design and convenience, but also the clearance S between the side wall W and the parting material 30 can be opened toward the ceiling space without impairing the safety of the ceiling structure 1.

  Moreover, according to the ceiling structure 1 according to the present embodiment, since the air suction means H is arranged in the space behind the ceiling, the air in the indoor space is discharged to the outside using the gap S between the parting material 30 and the side wall W. can do. In other words, the gap S can be effectively used as an intake port.

  Next, a modification of the present embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

<First Modification>
6A and 6B are cross-sectional views showing a first modified example of the engagement state between the ceiling base material and the parting material, wherein FIG. 6A is a side view and FIG. 6B is a cross-sectional view taken along line II-II in FIG. .
The first modified example is mainly different from the above-described embodiment in that the parting material 70 is fixed to the lower end of the ceiling base material 60 by a bolt 74 and a nut 75.

  As shown in FIG. 6B, the ceiling base material 60 includes a web portion 61 that extends in the vertical direction and a flange portion 62 that extends in the lateral direction from the lower end of the web portion 61. On the upper end of the web portion 61, ridges 63, 63 extending upward in a bifurcated shape are formed. Further, downwardly extending protrusions 64, 64 are formed on the lower surfaces of both ends of the flange portion 62 in the width direction. Locking portions 65, 65 extending toward the other ridge 64 are formed at the lower ends of the ridges 64, 64.

  As shown in FIG. 6A, the parting material 70 includes a web part 71 extending vertically, a lower flange part 72 extending from the lower end of the web part 71 toward the ceiling base material 60, and the web part. The upper flange portion 73 extends from the upper end of 71 toward the ceiling base material 60 side. The lower flange portion 72 is formed with a through-hole for inserting the bolt 74 at a position corresponding to the ceiling base material 60. The web portion 71 covers the end portion of the ceiling base material 60 and the end portion of the ceiling board 20. The lower flange portion 72 covers the lower end of the ceiling base material 60 and the lower end of the ceiling board 20. The upper flange portion 73 covers the upper end of the ceiling base material 60 and the upper end of the ceiling board 20.

  A nut 75 is disposed between the protrusions 64 and 64 of the ceiling base material 60. The bolt 74 is engaged with the nut 75 through the through hole of the lower flange portion 72 and the clearance between the locking portions 65 and 65. In the first modification, the locking portions 65 and 65 of the ceiling base material 60 and the lower flange portion 72 of the parting material 70 are pressed against each other by the bolt 74 and the nut 75, and the ceiling base material 60 and the parting material 70 are fixed. ing.

According to the first modification, the ceiling base material 60 and the parting material 70 can be fixed from below, so that the work in the space behind the ceiling is reduced and the assembly of the ceiling structure is facilitated.
In addition, a partition wall runner or a suspension member (both not shown) can be attached to the end of the ceiling base material 60 using the bolt 74 and the nut 75.

<Second Modification>
FIG. 7 is a cross-sectional view showing a second modified example of the connection state between the ceiling base material and the parting material, (a) is a perspective view, (b) is a side view showing a state before fixing, and (c) is a side view. It is a side view which shows the state after fixation.
The second modification mainly differs from the above-described embodiment in that the parting material 80 and the ceiling base material 60 are connected using the corner joint 90.

  As shown to Fig.7 (a), the ceiling base material 60 is mainly provided with the web part 61, the flange parts 62 and 62, the protrusion 63,63,64,64, and the latching | locking part 65,65. ing. Further, upper engaging portions 66 and 66 that protrude downward along the web portion 61 are formed at the lower ends of the protrusions 63 and 63. Further, lower engagement portions 67 and 67 projecting upward along the web portion 61 are formed on the upper surfaces of the flange portions 62 and 62. Between the upper engaging portion 66 and the web portion 61 and between the lower engaging portion 67 and the web portion 61, there are provided gaps in which the locking portions 93B and 93B of the corner joint 90 described later are disposed. It has been.

  The parting material 80 includes a web part 81 extending vertically, an upper flange part 82 extending from the upper end of the web part 81 to the ceiling base material 60 side, and extending from the lower end of the web part 81 to the ceiling base material 60 side. And a lower flange portion 83. An upper engagement portion 84 that extends downward is provided at an end of the upper flange portion 82 on the ceiling base material 60 side. A lower engagement portion 85 extending upward is provided at a position on the upper surface of the lower flange portion 83 and away from the web portion 81. The lower flange portion 83 covers the lower end portion of the ceiling base material 60 and the lower end portion of the ceiling board 20 (see FIG. 1). The web part 81 is separated from the side wall W.

  The corner joint 90 is a member that connects the ceiling base material 60 and the parting material 80. The corner joint 90 mainly includes substantially square substrate portions 91A and 91B and a connecting portion 96 that connects the substrate portions 91A and 91B. The board portion 91A is arranged in a direction orthogonal to the board portion 91B. The connecting portion 96 is bent into a substantially L shape when viewed from above. Screw holes 95A and 95B are formed in the central portions of the substrate portions 91A and 91B, respectively. Bolts 94A and 94B are installed in the screw holes 95A and 95B, respectively.

  Upright portions 92A and 92A extending toward the parting material 80 are formed at both upper and lower ends of the substrate portion 91A. Further, locking portions 93A, 93A extending in the opposite direction to the other rising portion 92A are formed at the end portions of the rising portions 92A, 92A on the parting material 80 side. The locking portions 93A and 93A are disposed between the web portion 81 and the upper engagement portion 84 and between the web portion 81 and the lower engagement portion 85, respectively.

  Upright portions 92B and 92B extending toward the ceiling base material 60 are formed at both upper and lower ends of the substrate portion 91B. Further, locking portions 93B and 93B extending in the opposite direction to the other rising portion 92B are formed at the end portions of the rising portions 92B and 92B on the ceiling base material 60 side. The locking portions 93 </ b> B and 93 </ b> B are respectively disposed between the web portion 61 and the upper engagement portion 66 and between the web portion 61 and the lower engagement portion 67.

  Here, the height dimension of the upper engaging portion 66 and the lower engaging portion 67 of the ceiling base material 60 is such that the locking portion 93B is pressed when the corner joint 90 is pressed from the side of the ceiling base material 60 and pressed. , 93B get over the upper engaging portion 66 and the lower engaging portion 67 and fit into the gap between the upper engaging portion 66 and the web portion 61 and the gap between the lower engaging portion 67 and the web portion 61. It is set to a height that you want. That is, the ceiling base material 60 is configured so that the engaging portions 93B and 93B of the corner joint 90 can be easily fitted from the side.

Next, an engagement method between the corner joint 90 and the parting material 80 will be described with reference to FIGS.
First, as shown in FIG. 7B, the locking portions 93 </ b> A and 93 </ b> A of the corner joint 90 are arranged between the web portion 81 and the upper engagement portion 84 and between the web portion 81 and the lower engagement portion 85. Place between. At this time, the amount of protrusion of the bolt 94A toward the parting material 80 is made smaller than the width of the upright parts 92A and 92A, so that the corner joint 90 can slide along the longitudinal direction of the parting material 80. Keep it.

  Next, the parting material 80 is temporarily arranged along the end portion on the side wall W side of the ceiling base material 60 that is suspended and supported from the side wall W. Then, the corner joint 90 is slid to arrange the corner joint 90 at a position corresponding to the ceiling base material 60.

  Next, as shown in FIG. 7C, when the bolt 94A is rotated to increase the projecting amount of the bolt 94A toward the parting member 80, the board portion 91A moves away from the web portion 81 and is locked. The portions 93A and 93A are pressed against the upper engaging portion 84 and the lower engaging portion 85. Thereby, the corner joint 90 is fixed to the parting material 80.

  Next, as shown in FIG. 7A, the locking portions 93 </ b> B and 93 </ b> B of the substrate portion 91 </ b> B are arranged between the web portion 61 and the upper engagement portion 66 and between the web portion 61 and the lower engagement portion 67. The locking portions 93B and 93B are pressed against the upper engaging portion 66 and the lower engaging portion 67 by projecting the bolt 94B toward the web portion 61. Thereby, the corner joint 90 is fixed to the ceiling base material 60, and as a result, the parting material 80 is fixed to the end portion of the ceiling base material 60 through the corner joint 90. If such a corner joint 90 is used, the ceiling base material 60 and the parting material 80 can be easily connected.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the present invention is not limited to this and can be appropriately changed without departing from the gist of the present invention.

  For example, in the present embodiment, the ceiling base material 10, the parting material 30, and the blindfold member 40 are aluminum extrusion mold materials, but may be, for example, steel press-molded products.

  Moreover, in this embodiment, although the ceiling base material 10 was comprised in the grid | lattice form, it is not restricted to this, For example, you may comprise in the line form arrange | positioned in parallel in the direction orthogonal to the side wall W.

  Further, in the present embodiment, the description is centered on the configuration in the vicinity of the end portion 10a of the main bar 10A. However, it is desirable that the end portion of the crossbar 10B facing the side wall (not shown) has the same configuration.

It is a perspective view of the ceiling structure concerning this embodiment. It is a side view of the edge part of a ceiling structure. It is sectional drawing in the II line | wire of FIG. It is a side view showing the construction procedure of the ceiling structure concerning this embodiment. It is a side view showing the construction procedure of the ceiling structure concerning this embodiment. It is sectional drawing which shows the 1st modification of the engagement state of a ceiling base material and a parting material, (a) is a side view, (b) is the II-II sectional view taken on the line of (a). It is sectional drawing which shows the 2nd modification of the connection state of a ceiling base material and a parting material, (a) is a perspective view, (b) is a side view which shows the state before fixation, (c) is the state after fixation. FIG. It is a side view of the edge part of the conventional ceiling structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling structure 10 Ceiling base material 20 Ceiling board 30 Parting material 40 Blindfold member 50 Suspension member S Crevice W Side wall

Claims (5)

A ceiling base material suspended from and supported by the suspension member at a distance from the side wall;
A ceiling plate supported by the ceiling base material;
A parting material that is fixed to the ceiling base material and covers the end of the ceiling base material and the end of the ceiling plate facing the side wall;
A ceiling structure, comprising: a blindfold member that protrudes from the side wall above the gap between the side wall and the parting material. At the upper end of the ceiling base material, two protrusions having thread grooves on the inner wall surfaces facing each other are formed in parallel along the longitudinal direction,
The parting material has an upper contact portion that contacts the upper end of the ceiling base material,
The ceiling structure according to claim 1, wherein the parting material is fixed to an end portion of the ceiling base material by a screw penetrating the upper contact portion engaging with the screw groove.   The ceiling structure according to claim 1 or 2, wherein a distance between the blind member and the suspension member is equal to or greater than a distance between the side wall and the parting material.   The ceiling structure according to any one of claims 1 to 3, wherein an air intake means is disposed above the ceiling base material. A method for constructing a ceiling structure according to any one of claims 1 to 4,
The suspension member has a base receiving material arranged in a direction intersecting with the ceiling base material,
Arranging the base receiving material at a distance from the side wall;
Arranging each ceiling base material with respect to the base receiving material such that the distance between the end of each ceiling base material facing the side wall and the base receiving material is constant. A method of constructing a characteristic ceiling structure.

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