JPH0978748A - Ceiling beam mounting structure of ceiling panel in building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a ceiling beam by a member which is used as substitute for lumber and reduce cost. SOLUTION: A bracket 3 is attached inside a long side ceiling beam 14, and a forward bending section 3A is formed in front of the bracket 3. A mounting member 2 is fixed on the forward bending section 3A, a ceiling beam 1 is attached on the mounting member 2 by nipping its end between an upper flange section 2A and a lower flange section 2B of the mounting member 2, and for example, it is attached by caulking by a rivet 6 which is driven from the upper flange section 2A side. The ceiling beam 1 is extended in the orthogonal direction to the longitudinal direction of the mounting member 2, and a square pipe obtained by bending and machining a thin plate belt steel is used as the ceiling beam 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling beam mounting structure for a ceiling panel in a building unit.

[0002]

BACKGROUND ART As shown in FIG. 6, a building unit 10 as shown in FIG.
1. The floor panel 12 is built by assembling the ceiling panel 11 and the gable panels 13 arranged on both sides of the floor panel 12. The ceiling panel 11 is formed by bridging a plurality of ceiling beams 15 between two parallel long side ceiling beams 14. A ceiling panel 16 is attached to the lower surface of the ceiling beam 15. In addition, as shown in FIG.
A, a lower flange portion 14B, and a web portion 14C connecting these end portions to each other have a groove-shaped cross section. The floor panel 12 is formed by bridging a plurality of wooden joists 18 between two parallel long-side floor beams 17. A floor material 19 is attached to the lower surface of the joist 18. The wife panel 13 has two columns 20 and these columns 2
It is formed by including short side ceiling beams 21 and short side floor beams 22 that connect the upper ends of 0 and the lower ends thereof.

In the ceiling panel 11 of such a building unit 10, the ceiling beam 15 is attached as shown in FIG. That is, the bracket 23 formed of an iron plate or the like is fixed inside the long side ceiling beam 14, and the ceiling beam 15
Is attached to the side surface of the bracket 23 with bolts 24 and the like. At this time, the lower surface of the end portion of the ceiling beam 15 is placed on a part of the lower flange portion of the long-side ceiling beam 14. In addition, on the lower surface and both ends of the ceiling beam 15, a predetermined depth dimension is cut in a range larger than the width dimension of the threading member 25 from a portion located in the vicinity of the end portion of the lower flange portion 14B toward the indoor side. The notch 15A is formed,
The wooden threading member 25 is attached to the notch 15A in a direction orthogonal to the length direction of the ceiling beam 15.

The thickness of the threading member 25 is notched 15A.
It is the same as the depth dimension of. Further, the lower surface of the through member 25 and the lower surface of the lower flange portion of the long side ceiling beam 14 are flush with each other. The ceiling panel 16 is attached to the lower surface between the through members 25 at both ends of the ceiling beam 15, and the adjacent long side ceiling beams 1 of the adjacent building units 10 are further attached.
The ceiling surface material 26 for connection is provided between the threading members 25 provided in FIG.
Can be attached. Therefore, the ceiling surface material 16 and the connecting ceiling surface material 26 can be surface materials having the same thickness dimension, whereby a horizontal ceiling surface can be obtained. The ceiling surface material 16 is formed of, for example, two stacked gypsum boards 16A and 16B, and the connecting ceiling surface material 26 is formed of two stacked gypsum boards 26A and 26B.

[0005]

By the way, there is a widespread worldwide movement to protect forests, and there is a shortage of wood resources. Therefore, the price of timber is also rising. Along with this, the use of wood substitutes has been examined in various fields including the construction field.For example, in a building unit that is a component of a unit-type building, while reducing cost on the one hand, wood on the other hand is used. It is sought to form the formed parts by another member instead of wood.

Further, in the above-mentioned conventional ceiling beam mounting structure, notches 15A are formed on the lower surface and both ends of the ceiling beam 15.
Must be formed. In this case, the long side ceiling beam 14
The lower surface of the lower flange portion 14B and the lower surface of the through member 25 have the same height. On the other hand, since one end portion of the long side ceiling beam 14 of the ceiling beam 15 is placed on the upper surface of the lower flange portion 14B of the long side ceiling beam 14, the lower flange portion 14
The height dimension is lower than the other parts of the ceiling beam 15 by the plate thickness dimension of B, and the height dimension must be changed depending on the location, which makes the processing troublesome. Further, there is also a problem that the notch 15A is troublesome to make because the notch size is different between one end of the notch 15A and the other part.

An object of the present invention is to provide a ceiling girder mounting structure for a ceiling panel in a building unit in which the ceiling girder can be formed of a member replacing wood and the cost can be reduced.

Another object of the present invention is to provide a ceiling girder mounting structure for a ceiling panel in a building unit, which makes it possible to easily manufacture a ceiling girder for a ceiling panel.

[0009]

A ceiling beam mounting structure for a ceiling panel in a building unit according to the present invention will be described with reference to the drawings. Referring to FIGS. The ceiling panel 11 is configured to include two parallel long side ceiling beams 14 facing each other and a plurality of ceiling girders mounted between the long side ceiling beams 14 via a bracket 3. And a through member 25 for attaching the ceiling panel 16 of the building unit to the lower surface of these ceiling beams 1.
Is a ceiling girder mounting structure of a ceiling panel in which a plurality of ceiling panels are mounted in the direction orthogonal to the ceiling beam 1 and the lower surface thereof has the same height as the lower surface of the long side ceiling beam 14, and the ceiling beam 1 is made of metal. It is characterized by that.

In the ceiling girder mounting structure of the ceiling panel in such a building unit, since the ceiling girder 1 is made of metal and is attached to the long side ceiling girder 14 via the bracket 3, the building unit is attached. The ceiling girder 1 can be formed of a member replacing wood.

In the ceiling girder mounting structure of the ceiling panel in this building unit, as shown in FIGS. 1 to 3, the metal ceiling girder 1 may be formed by a square pipe obtained by bending a thin strip. . In such a ceiling girder mounting structure for a ceiling panel in a building unit, since the ceiling girder 1 is a square pipe made by bending a thin strip, the weight is light and the strength is large.
The ceiling beam 1 can be formed of a member instead of wood, and since thin plate strips are used, the cost can be reduced and the cost can be reduced.

In the present invention, as shown in FIGS.
The through members 25 are attached to the lower surfaces of both ends of the ceiling beam 1 and the receiving members 7 having the same thickness dimension as the through members 25 are attached between the lower surface of the ceiling beam 1 and each of the through members 25. The ceiling panel 16 of the building unit 10 is hung, and the connecting ceiling panel 26 is horizontally mounted between the adjacent through members 25 of the adjacent building unit 10 with the lower surface of the connecting panel 26 at the same height as the lower surface of the ceiling panel 16. I may. In such a ceiling beam mounting structure of the ceiling panel in the building unit, the receiving member 7 having the same thickness dimension as the through member 25 is provided on the lower surface of the ceiling beam 1.
Since the ceiling beam 1 is attached, the gap between the through members 25 at both ends of the ceiling beam 1 is filled, and this is similar to the case where the notch is formed in the ceiling beam 1, and therefore, the ceiling beam 1 is not processed at all. Since it does not need to be done, the ceiling beam 1 can be easily manufactured.

In the present invention, as shown in FIGS.
Attach the long side ceiling beam 14 to the upper flange portion 14A and the lower flange portion 1
4B and a flange portion 14C for connecting these flange portions 14A and 14B to each other, the groove portion is formed to have a cross section, the bracket 3 is formed of a plate-shaped member, and the upper flange portion 14 is formed.
A bracket is attached between A and the lower flange portion 14B, and a front bent portion 3A parallel to the web portion 14C is formed on the front portion of the bracket 3, and the long side ceiling beam 14 is formed in the front bent portion 3A. 3A parallel to the direction and bent at the front
A mounting member 2 having a contact surface 2D that comes into contact with the ceiling beam 1 may be mounted on the mounting member 2.

In the ceiling beam mounting structure for the ceiling panel in such a building unit, the mounting member 2 is mounted on the bracket 3, and the ceiling beam 1 is mounted on the mounting member 2.
Since it is only necessary to attach the ceiling beam to the ceiling girder, it is easy to perform positioning at the time of attachment, which facilitates the work of attaching the ceiling beam 1.

In the present invention, as shown in FIGS.
The ceiling beam 1 made of metal is formed by a square pipe that is obtained by bending a thin strip rope and has horizontal grooves 1A on both sides,
A locking member 30 capable of locking both ends of the ceiling beam 1'is provided on the long-side ceiling beam 14, and the locking member 30 is a width direction in a direction orthogonal to the longitudinal direction of the ceiling beam 1 '. , A bottom portion 30A having a width dimension larger than that of the ceiling beam 1 ',
Side portions 30B and 30B that are bent at both ends of the bottom portion 30A so as to approach each other as they go upward and generate spring action in the width direction, and the side portions 30B and 3B.
The vertical portions 30C and 30C are formed at the tip of 0B, and the guide portions 30D and 30D are formed by bending the upper portions of the vertical portions 30C and 30C from the upper ends thereof to the upper portions. The dimension between the ends of the vertical beam is made larger than the width of the ceiling beam 1 '.
The dimension between C and 30C may be formed smaller than the dimension between the horizontal grooves 1A and 1A on both side surfaces of the ceiling beam 1 '.

In the ceiling beam mounting structure for the ceiling panel in such a building unit, if the ceiling beam 1'is pushed into the locking member 30 mounted on the long side ceiling beam 14 from above the locking member 30, The groove 1A of the ceiling beam 1'is sandwiched by the vertical portions 30C, 30C by the spring action of the side surface portions 30B, 30B of the locking member 30, so that the ceiling beam 1'can be mounted with one touch and the mounting work is easy. Is.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a ceiling girder mounting structure according to the first embodiment. In this embodiment, the same members and the like as the above-described conventional ceiling beam mounting structure are designated by the same reference numerals, and detailed description thereof will be omitted or simplified.

As shown in FIGS. 1 and 3, a bracket 3 is attached inside the long side ceiling beam 14. The bracket 3 is formed of a plate member and has a ceiling beam 14
The upper flange portion 14A and the lower flange portion 14B are sandwiched on the partition. The upper portion and the lower portion of the bracket 3 are bent in the same direction, and this bent portion is the upper flange portion 1 of the long side ceiling beam 14.
4A and the lower flange portion 14B are brought into contact with each other and are fixed by, for example, bolts 4 or the like.

On the front surface of the bracket 3, the ceiling beam 1
The front bent portion 3A is formed so as to be bent in parallel with the fourth web portion 14C. This front bent portion 3A
Is bent in a direction opposite to the bending direction of the upper and lower parts from the horizontal notch 3B formed in the middle of the front surface of the bracket 3 to the lower part.

The mounting member 2 is pressed against the front bent portion 3A of the bracket 3 in parallel with the longitudinal direction of the long side ceiling beam 14 and fixed by welding.
The mounting member 2 has a groove-shaped cross section having an upper flange portion 2A, a lower flange portion 2B, and a web portion 2C, and the mounting member 2 has substantially the same length as the ceiling beam 14. . Further, the attachment member 2 is placed on the upper surface of the lower flange portion 14B of the long side ceiling beam 14 via the level adjusting material 5 having a predetermined thickness dimension.

The level adjusting material 5 has substantially the same length as the mounting member 2, and is mounted on the lower surface of the mounting member 2 and on the upper surface of the lower flange portion 14B of the long side ceiling beam 14 to the mounting member 2. It is designed to be fixed by welding. When there are various types having different thicknesses, and the lower flange portion of the long side ceiling beam has a different thickness dimension, the sheet thickness dimension of the lower flange portion of the long side ceiling beam and the mounting member 2 are used. The total thickness of the plate thickness of the lower flange portion and the thickness of the level adjusting material 5 is the through material 2
It is selected and used so that it is always equal to the thickness dimension of 5.

Inside the mounting member 2, the ceiling beam 1 is sandwiched between the upper flange portion 2A and the lower flange portion 2B of the mounting member 2 at the end thereof, and the rivet 6 is driven, for example, from the upper flange portion 2A side. It is attached by caulking. This ceiling beam 1 is a mounting member 2
A rectangular pipe formed by bending a metal band, specifically, a thin band rope (so-called light iron) is used, which extends in a direction orthogonal to the longitudinal direction of the. The height dimension of this square pipe is larger than the width dimension. The bending of the thin strip is performed by, for example, roll forming, and the thickness of the thin strip is about 0.5 mm.

The through members 25 are attached to the lower surfaces of both ends of the ceiling beam 1 in the direction orthogonal to the longitudinal direction of the ceiling beam 1 by, for example, nailing. At this time, the lower surface of the threading member 25 and the lower surface of the lower flange portion 14B of the long-side ceiling beam 14 have substantially the same height. Therefore, the lower flange portion 14B of the long-side ceiling beam 14
That is, the thickness dimension of the lower flange portion 2B of the mounting member 2 and the level adjusting material 5 and the thickness dimension of the through member 25 are the same.

Therefore, the lower surface of the ceiling beam 1 is the long side ceiling beam 1.
4 is located above the lower surface of the lower flange portion 14B by the thickness of the threading member 25, and when the ceiling surface material 16 is attached to the threading member 25, the space between the threading members 25 in the ceiling beam 1 is reduced. Therefore, a gap corresponding to the thickness of the threading member 25 is formed. Therefore, in order to fill the gap, the through member 25 is previously provided on the lower surface of the ceiling beam 1 as shown in FIG.
Gap filling member 7 which is a receiving member having a thickness equal to the thickness of
Is attached. The gap replenishing member 7 is formed to have a width larger than that of the ceiling beam 1 and extends between the through members 25 at both ends of the ceiling beam 1. The gap replenishing member 7 is formed of, for example, gypsum board.

According to this embodiment as described above, the following effects can be obtained. Since the ceiling girder 1 is formed by bending a thin strip, the weight of the ceiling girder 1 is light and the strength thereof is great. As a result, the ceiling girder 1 can be formed by a member replacing wood. Since a thin strip rope is used, the cost can be reduced and the cost can be reduced.

The ceiling beam 1 is formed of a square pipe obtained by bending a thin strip, and has a gap supplement member 7 attached to the lower surface thereof and a through member 25 attached to the gap supplement member 7. Since the ceiling surface material 16 and the like are attached to the lower surface of the threading member 25 and the like, it is not necessary to form a conventional cutout or the like for attaching the threading member 25 to the lower surface of the ceiling beam 1 and the ceiling beam 1 does not have to be formed. Can be easily manufactured.

A flat front bent portion 3A is formed on the bracket 3, and the abutting portion 2D of the mounting member 2 is pressed against the front bent portion 3A to mount the front beam 11.
Since it suffices to insert the mounting member by inserting it into the upper flange portion 2A and the lower flange portion 2B of the mounting member, positioning at the time of mounting and the like are easy, and mounting of the ceiling beam 1 becomes easy.

A level adjusting member 5 is attached to the lower surface of the attaching member 2, and the level adjusting member 5 is
Corresponding to the different thickness dimensions of the flange portion 14B of the long side ceiling beam 14, between the thickness dimension of the flange portion 14B,
Since there are a plurality of types that can ensure the same thickness dimension as the threading member 25, the ceiling surface material 16 and the connection surface material 26 can be easily attached horizontally even if the flange portions have different thickness dimensions.

4 and 5 show a ceiling beam mounting structure according to the second embodiment. In this embodiment, the ceiling beam 1'can be attached more easily. Also in this embodiment, the same structures and the like as those of the conventional example and the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted or simplified.

A locking member 30 formed of a spring member is attached to the inside of the long side ceiling beam 14, more specifically, on the upper surface of the lower flange portion 14B, and the ceiling beam 1'is attached to this locking member 30. So to speak, it can be attached with one touch. As the ceiling girder 1 ′, like the ceiling girder 1 of the first embodiment, a square pipe obtained by bending a thin strip rope is used, but the shape is different from the ceiling girder 1.

That is, horizontal grooves 1A are formed on both sides of the ceiling beam 1'in the longitudinal direction of the ceiling beam 1 '. The locking member 30 is arranged such that the width direction is orthogonal to the longitudinal direction of the ceiling beam 1 ', and the bottom portion 30A having a width dimension larger than the width dimension of the ceiling beam 1'and the bottom portion 30A. Side portions 30B, 30B that are bent at both ends of the side portions and approach each other as they go upward to generate a spring action in the width direction, and diagonally upward from the tips of these side surface portions 30B, 30B through short vertical portions 30C, 30C. Guide portions 30D, 30D that are bent and formed toward
And are formed. And these vertical parts 3
The dimension between 0C and 30C is the horizontal groove 1A of the ceiling beam 1 '.
It is formed to be smaller than the space between the vertical portions 3 and
0C and 30C will form a holding part. The dimension between the tips of the guide portions 30D and 30D is the ceiling beam 1 '.
It is larger than the width dimension of.

Therefore, the ceiling beam 1'is attached to the guide portion 30D,
When pushed along 30D, the side surface portions 30B, 30
By the spring action of B, the vertical portions 30C and 30C spread in the width direction together with the side surface portions 30B and 30B, and then the horizontal groove 1A of the ceiling beam 1'and the vertical portion 30 of the locking member 30.
C and 30C are engaged with each other, and the horizontal groove 1A is sandwiched between the vertical portions 30C and 30C, so that the ceiling beam 1'is attached to the long side ceiling beam 14 via the locking member 30. Become. In addition, the locking member 30 and the ceiling beam 1 ', the vertical portion 30C, 3 after locking both 30,1'
It may be fixed by, for example, the rivet 6 driven from the outside of 0C toward the lateral groove 1A of the ceiling beam 1 '.

On the lower surface of the ceiling beam 1 ', the through member 25 and the gap replenishing member 7 are attached, and further the level adjusting member 5'is attached. The level adjusting member 5'has substantially the same structure and operation as the level adjusting member 5 of the first embodiment.

According to the second embodiment as described above, in addition to the same effects as the above-mentioned, the following effects can be obtained. That is, when the ceiling beam 1'is pushed along the guide portions 30D, 30D, the vertical portions 30C, 30C are opened by the spring action of the side surface portions 30B, 30B of the locking member 30, and
Since the horizontal groove 1A of the ceiling beam 1'and the vertical portions 30C, 30C of the locking member 30 are engaged with each other and the horizontal groove 1A is sandwiched between the vertical portions 30C, 30C, it can be attached with one touch, Easy to install.

Further, the ceiling beam 1'may be attached to the locking member 30 and fixed by, for example, the rivet 6. Only two points are required for the attachment, and the bracket 3, the attachment member 2 and the rivet 6 are three. The number of members is smaller than that of the first embodiment, which requires points.

The present invention is not limited to the above-described embodiments, but includes the following modifications as long as the object of the present invention can be achieved. For example, in the first embodiment, the ceiling beam 1 uses square pipes having different vertical and horizontal dimensions, but the present invention is not limited to this, and square pipes having the same vertical and horizontal dimensions may be used. Further, in each of the above-described embodiments, the ceiling beam 1 or 1'is a square pipe obtained by bending a thin strip, but the invention is not limited to this, and may be a ceiling beam having an L-shaped section, a groove type, or the like. Good. In the present invention,
In short, the ceiling beams 1 and 1'may be made of metal and can replace the conventional wooden ceiling beams.

Furthermore, in the first embodiment, the upper and lower portions of the bracket 3 are bent and formed, and the bolt 4 is attached to the long side ceiling beam 14, but the present invention is not limited to this, and the upper and lower flange portions 14A and 14B are also connected. It may be a flat plate-shaped bracket that is sandwiched between the ceiling beams, and this bracket may be attached to the ceiling beam 14 by welding.

Further, in the first embodiment, the front bent portion 3A is formed on the bracket 3, and the mounting member 2 is mounted on the front bent portion 3A.
Although the ceiling beam 1 is attached to the above, it is not limited to this. For example, the front bent portion 3A does not necessarily have to be provided,
Further, the mounting member 2 may not be necessarily provided, and the ceiling beam 1 may be directly mounted on the bracket in which the front bent portion is not formed.

[0039]

As described above, according to the ceiling girder mounting structure of the ceiling panel in the building unit of the present invention, the ceiling girder is made of metal, and the ceiling side girder is attached to the long side ceiling girder via the bracket. Since it is attached, the ceiling beam of the building unit can be formed by a member replacing wood.

Further, since the ceiling beam is a square pipe obtained by bending a thin strip rope, it is light in weight and large in strength, so that it can be used as a member to replace wood. Since the rope is used, the cost is low and the cost can be reduced.

Further, through members are attached to the lower surfaces of both ends of the ceiling beam, and receiving members having the same thickness dimension as these through members are attached to the lower surface of the ceiling beam and between the through members. The ceiling panel of the building unit is laid across, and the ceiling panel for connection is laid horizontally between the adjacent through panels of the adjacent building unit, with the lower surface of the connecting panel facing the lower surface of the ceiling panel. Therefore, the gap between the through members at both ends of the ceiling beam is filled, and this is the same as when the notch is formed in the ceiling beam, and therefore the ceiling beam can be processed without any processing. Makes it easy to produce ceiling beams.

Further, the ceiling beam is formed by a rectangular pipe obtained by bending a thin strip rope and having horizontal grooves on both sides, and both ends of the ceiling beam can be locked to the long side ceiling beam. A locking member is provided, and if the ceiling beam is pushed into the locking member from above the locking member, the groove of the ceiling beam is sandwiched by the vertical portion by the spring action of the side surface of the locking member. The ceiling beam can be attached with one touch, and the installation work is easy.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of a ceiling beam mounting structure for a ceiling panel in a building unit of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a main part of the first embodiment of the present invention.

FIG. 4 is a side sectional view showing a main part of a second embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a main part of a second embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a ceiling panel, a floor panel, and a gable panel that form a building unit.

FIG. 7 is a perspective view showing a building unit.

FIG. 8 is a side sectional view showing a main part of a ceiling beam mounting structure in a conventional building unit.

[Explanation of symbols]

 1,1 'Ceiling beam (made of light iron) 2 Mounting member 2D Abutment surface 3 Bracket 3A Front bending part 5 Level adjusting material 7 Gap supplementing member which is a receiving member 10 Building unit 11 Ceiling panel 14 Long side ceiling beam 14A Upper flange Part 14B Lower flange part 14C Web part 30 Locking member 30A Bottom part 30B Side part 30C Vertical part 30D Guide part

Claims (5)

[Claims] 1. A building unit that constitutes a unit-type building is provided with a ceiling panel, and the ceiling panel is provided with two parallel long side ceiling beams facing each other and a bracket interposed between these long side ceiling beams. Is formed by including a plurality of ceiling beams that are attached by
A ceiling beam of a ceiling panel in which a through member for attaching a ceiling panel of the building unit has its lower surface at the same height as the lower surface of the long-side ceiling beam, and is attached in a direction orthogonal to the ceiling beam. A mounting structure for mounting a ceiling beam on a ceiling panel in a building unit, wherein the ceiling beam is made of metal. 2. The ceiling girder mounting structure for a ceiling panel in a building unit according to claim 1, wherein the metal ceiling girder is a square pipe formed by bending a thin strip. Ceiling beam mounting structure for the ceiling panel in the unit. 3. The ceiling girder mounting structure for a ceiling panel in a building unit according to claim 1, wherein the through members are attached to lower surfaces of both ends of the ceiling girder and the lower surface of the ceiling girder and the through holes. A receiving member having the same thickness dimension as those of the through members is attached between the members, and the ceiling surface member of the building unit is bridged between the through members, and between the adjacent through members of the adjacent building units. The ceiling girder mounting structure for a ceiling panel in a building unit, wherein the connecting ceiling panel is horizontally hung with its lower surface flush with the lower surface of the ceiling panel. 4. The ceiling beam mounting structure for a ceiling panel in a building unit according to claim 1, wherein the long side ceiling beam connects an upper flange portion and a lower flange portion and these flange portions. The bracket is formed in a groove-shaped cross section having a web portion, the bracket is formed of a plate-shaped member, and is mounted in a partition shape between the upper flange portion and the lower flange portion. And a mounting portion having a contact surface parallel to the longitudinal direction of the long side ceiling beam and contacting the front bending portion is attached to the front bending portion. A ceiling girder mounting structure for a ceiling panel in a building unit, wherein the ceiling girder is mounted. 5. The ceiling girder mounting structure for a ceiling panel in a building unit according to claim 1, wherein the metal ceiling girder is obtained by bending a thin strip and has horizontal grooves on both sides. The long side ceiling beam is provided with a locking member capable of locking both ends of the ceiling beam, and the locking member is orthogonal to the longitudinal direction of the ceiling beam. The width direction is the width direction, and the bottom surface portion has a width dimension larger than the width dimension of the ceiling beam, and side surfaces that are bent at both ends of the bottom beam portion so that they approach each other as they go upward, and a spring action is generated in the width direction. A portion, a vertical portion formed at the tip of the side surface portion, and a guide portion that is bent obliquely outward and upward from the upper end of the vertical portion,
The dimension between the tips of the guide portions is formed larger than the width dimension of the ceiling beam, and the dimension between the vertical portions is formed smaller than the dimension between the horizontal grooves on the both sides of the ceiling beam. Ceiling beam mounting structure for ceiling panels in building units.