JPH0334534B2 - - Google Patents

Description

[Detailed description of the invention] purpose of invention (Industrial application field) The present invention relates to house units.

(Conventional technology) In prefabricated houses, a frame is assembled in a factory, necessary structural materials such as ceiling materials and flooring materials are attached to the frame to produce the house unit, and the house unit is transported to the construction site. A construction method is used in which houses are built by assembling multiple pieces. By the way, the framework of the above-mentioned house unit is disclosed in, for example, Japanese Patent Publication No. 58-37462 and Utility Model Publication No. 56-374.
As seen in Publication No. 22434, it is formed into a box shape with four columns and eight beams, and in each frame, ceiling material is attached to the bottom side of the upper beam.
Flooring material can be attached to the top side of the lower beam.

However, in the above construction method, the upper beam of the first floor frame and the lower beam of the second floor frame overlap, so
It was uneconomical. Therefore, for example, a method has been developed in which the upper beam of the frame for the first floor is omitted and the lower beam of the frame for the second floor is used. In this case, in the house unit on the second floor, the ceiling material for the first floor is attached to the lower surface of the lower beam, and the flooring material for the second floor is attached to the upper surface of the lower beam. In addition, the upper beam of the frame on the second floor is omitted, and the beam of the house unit on the roof is also used, and the ceiling material of the second floor is attached to this beam.

(Problems to be Solved by the Invention) However, in the above example, a problem arises in attaching the ceiling material. In other words, if the ceiling material is installed in advance at the factory, this ceiling material will be exposed at the bottom of the second floor house unit or the bottom of the roof house unit, and when transported to the construction site or the first floor at the construction site. There was a risk that the ceiling material would be damaged when connecting it to the partial house unit or the second floor house unit. Moreover, when ceiling materials are attached at a construction site to avoid this, work efficiency is significantly deteriorated.

Structure of the Invention (Means for Solving the Problems) The present invention has been made to solve the above problems, and its gist is to connect four beams via four joint boxes. In a house unit consisting of a rectangular frame part or four pillars connected to the frame part and four joint boxes, a ceiling material is attached to the lower side of this frame part, and the joint boxes protrudes downward from the lower surface of the beam, and its lower end is located at approximately the same height as or below the lower surface of the ceiling material.

(Function) The lower end of the joint box is located at approximately the same height as or below the bottom surface of the ceiling material, and in order to protect the ceiling material, it prevents the ceiling material from being damaged during transportation or assembly work at the construction site. can be prevented.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. As shown in Figures 1 and 2, the house consists of a house unit 1 on the first floor, which is pre-manufactured in a factory.
It is assembled by a house unit 2 on the second floor and a house unit 3 on the roof. Each house unit 1, 2, 3 has a frame portion 1A, 2A, 3A having a rectangular planar shape by connecting four beams 20 via four joint boxes 10. Further, in the house units 1 and 2, the lower ends of the four pillars 30 are connected to the upper surface of the joint box 10, so that the side surface shape of the entire frame is U-shaped.

The joint box 10 for connecting the beams 20 and columns 30 is made of steel and formed into a hollow hexahedron, as shown in FIG. joint box 1
0 is a cylindrical body 11 having a rectangular cross section, and this cylindrical body 11.
It has an end plate 12 that closes the upper and lower openings of.
The cylindrical body 11 is formed thicker than the pillars 30 and the beams 20. A plurality of holes 13 for inserting bolts are formed in each of the four side surfaces of the cylindrical body 11.
Further, a working opening 14 is formed at a corner located between two adjacent side surfaces. End plate 1
2, a recess 15 is formed on the front surface of the central portion, and four bolt insertion holes 16 are formed at the corners of the recess 15. The end plate 12 is welded to the cylindrical body 11.

The beam 20, as shown in FIGS. 4 to 6,
It has a base part 21 that stands up vertically and a flange part 22 that extends horizontally from the upper and lower edges of the base part 21, and has a U-shaped cross section. Two joint pieces 25 are fixed inside the upper and lower flange portions 22 at both ends of the beam 20. The joint piece 25 has a U-shaped overall shape, and a hole 26 for bolt insertion is formed in the vertical plate portion.

As shown in FIG. 6, with the vertical plate part of the joint piece 25 in contact with the side surface of the joint box 10, the bolt 40 is inserted into the joint piece 25.
The beam 20 is connected to the joint box 10 by passing it through the hole 26 of the joint box 10 and through the hole 13 of the joint box 10, and tightening it together with the nut 41. The working opening 14 of the joint box 10 is sandwiched between two beams 20 and placed inside the house units 1, 2, and 3, as shown by phantom lines in FIG. The connection operation is performed using a fastening jig through the opening 14.

What is important here is that in the house units 2 and 3, the joint box 10 protrudes downward from the lower surface of the lower flange portion 22 of the beam 20.

Frame portion 1A of each house unit 1, 2, 3,
2A and 3A, a large number of small beams 50 shown in FIGS. 4 and 5 are connected between the longer beams 20 arranged in parallel. The small beam 50 is formed to have an I-shaped cross section, and both ends thereof are connected to the joint piece 5.
It is connected to the beam 20 via 5. The joint piece 55 is a base portion 51 that is perpendicular to the small beam 50.
The first connecting part 56 connected to the base part 21 of the beam 20, the second connecting part 57 connected to the base part 21 of the beam 20, and the intermediate part 58 connecting these connecting parts 56 and 57 are integrally formed into a plate-like structure. is doing. The connecting parts 56 and 57 are
The intermediate portion 58 is orthogonal to each other, and the connecting portions 56 and 57
tilted against. The first connecting portion 56 of the joint piece 55 is connected in advance to the end of the small beam 50 with the bolt 42 and a nut (not shown), and then the second connecting portion 57 of the joint piece 55 is connected with the bolt 42 and the nut (not shown). It is connected to the beam 20 by a nut 44. At this time, attach the joint piece 55 to the beam 20.
a hole 59 formed in the second connecting portion 57 by positioning the hole 59 by contacting the upper flange portion 22 of the second connecting portion 57;
The holes 29 formed in the base portion 21 of the beam 20 are aligned with each other, and the bolts 43 are inserted therethrough. Above beam 5
0 is approximately the same height as the beam 20, and the upper and lower surfaces of the small beam 50 are approximately flush with the upper and lower surfaces of the beam 20.

The pillar 30 has a cross section 4 as shown in FIG.
It is constructed from a rectangular and hollow shaped steel, and its upper and lower openings are fitted with the end plates 1 of the joint box 10 described above.
An end plate 31 having the same shape as 2 is welded. The end plate 31 has four holes 32 for bolt insertion.
is formed, and a back nut 33 is welded to the back surface of the end plate 31 corresponding to this hole 32. And the end plate 12 of the joint box 10
By inserting four bolts 45 into the hole 16 formed in the hole 16 and the hole 32 formed in the end plate 31 of the column 30, screwing them into the back nut 33 and tightening,
The lower end of the column 30 is rigidly connected to the upper surface of the joint box 10.

House units 1, 2, and 3 are constructed by attaching necessary structural materials to the framework assembled as described above. That is, the flooring material 60 is attached to the upper surface side of the beam 20 and the small beam 50 of the house unit 1 on the first floor. A ceiling material 70 for the first floor is attached to the lower surface of the beam 20 and the small beam 50 of the house unit 2 on the second floor, and a floor material 60 for the second floor is attached to the upper surface. Further, a ceiling material 70 for the second floor is attached to the lower surface side of the beam 20 and small beam 50 of the house unit 3 in the roof portion.
Further, partitions, inner walls and outer walls (not shown) are attached to the house units 1 and 2 as necessary, and a roof plate is attached to the house unit 3.

What is important here is that in the house units 2 and 3, the lower end of the joint box 10 is located at approximately the same height as the lower surface of the ceiling material 70 or lower than this.

The house units 1, 2, and 3 with the components attached as described above are transported from a factory to a construction site, and assembled at the construction site as shown in FIG. 1. During this transportation and assembly work, the lower end of the joint box 10 is connected to the ceiling material 70.
The ceiling material 70 can be protected and damage to the ceiling material 70 can be prevented since it is at the same height as or more protruding than the lower surface of the ceiling material. In addition, the above joint box 10
Since the housing units 2 and 3 can serve as legs, it is also possible to place the house units 2 and 3 directly on the loading platform of a truck during transportation.

During the assembly, the lower surface of the joint box 10 on the first floor is connected to the foundation D via the spacer 80. That is, the above connection is made by inserting a bolt (not shown) through a hole 16 formed in the lower surface of the joint box 10 and screwing it into a nut (not shown) installed on the foundation D.

The lower surface of the joint box 10 on the second floor is connected to the upper end of the column 30 on the first floor via a spacer 80, and the joint box 10 on the roof
The lower surface of the spacer 8 is attached to the upper end of the column 30 on the second floor.
Connected via 0. Here, the connection of the pillar 30 to the joint box 10 is the joint box 1 in each of the above-mentioned house units 1, 2, and 3.
The same is true for the connection between 0 and column 30.

The present invention is not limited to the above embodiments, and various embodiments are possible. For example, in each house unit,
The ends of beams and columns may be welded to the joint box without using bolts or nuts. Furthermore, during transportation, leg members may be detachably attached to the lower surface of the joint box, and the house unit may be placed on the loading platform of a truck via these leg members.

Effects of the Invention As explained above, in the present invention, the lower end of the joint box protects the ceiling material by protruding at or below the lower surface of the ceiling material.
This prevents ceiling materials from being damaged during transportation or assembly work at construction sites.

[Brief explanation of drawings]

1 to 6 show one embodiment of the present invention, in which FIG. 1 is a schematic diagram showing a state in which a plurality of house units are assembled, FIG. 2 is a perspective view showing the frame of the house unit, and FIG. Figure 3 is a perspective view of the joint box, Figure 4 is a sectional view showing how the beams and small beams are connected.
FIG. 5 is an exploded perspective view of a beam and a small beam, and FIG. 6 is a cross-sectional view showing how the joint box, column, and beam are connected. 1, 2, 3...house unit, 1A, 2A, 3
A...Frame part, 10...Joint box, 20...Beam, 30...Column, 60...Floor material, 7
0...Ceiling material.

Claims (1)

[Claims] 1. In a house unit consisting of a rectangular frame formed by connecting four beams through four joint boxes, or four pillars connected to the frame and four joint boxes. A ceiling material is attached to the lower side of this frame part, and the joint box is projected downward from the lower surface of the beam, and its lower end is located at approximately the same height as or lower than the lower surface of the ceiling material. A house unit featuring: