JPH11229501A - Building unit having connecting bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building unit having a connecting bolt capable of taking in and out the connecting bolt in the building unit having the connecting bolt, capable of being transported to a building site by a general purpose transport vehicle and capable of easily performing installing work of the building unit. SOLUTION: In this building unit A having a connecting bolt, the headed connecting bolt 30 is screwed in a female screw hole 20a of a plate-like metal fitting 20 so as to project to the upper surface from the under surface of an upper frame by installing the plate-like metal fitting 20 having the female screw hole 20a overlapping with a bolt inserting hole 11a on the under surface and/or the upper surface of this upper frame 11 by arranging the bolt inserting hole 11a in the upper frame 11 of a wall panel 10 of a building unit. The connecting bolt 30 can be vertically moved by a driver by forming a driver groove 32 in a (+) shape or a (-) shape on the upper end surface of the connecting bolt 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a building unit with connecting bolts for connecting building units up and down.

[0002]

2. Description of the Related Art In general, a building unit is constructed by attaching structural surface materials to floor and wall frames to form floor panels and wall panels, and assembling these floor panels and wall panels into a box-shaped structure. Produced in the factory.

[0003] The unit building is constructed by transporting the lower building unit, the upper building unit and the roof unit of these building units from the factory to the building site and installing them on a previously prepared foundation. .

[0004] Specifically, a connecting bolt is projected from an upper frame of a lower-floor building unit or an upper-floor building unit, and is connected to a lower-floor building unit or an upper-floor building unit having such a connecting bolt. Place a unit such as a building unit or a roof unit to be mounted, and use the connection bolts and nuts described above.
Each unit is tightly connected up and down.

Japanese Patent Laid-Open Publication No. Hei 6-159343 discloses a building unit having this type of connecting bolt, in which a bolt insertion hole is formed in an upper frame of the building unit.
A connection bolt having a washer portion formed in the middle of the bolt portion is inserted from the upper surface of the upper frame to the lower surface, and a bolt portion below the washer portion is fastened by a nut on the lower surface of the upper frame.

The building unit with the connecting bolt is transported from the factory to the building site, and the building unit or the roof unit to be connected is connected by using the bolt portion protruding upward from the washer portion. A unit building is constructed.

[0007] In some applications, a building unit that is higher than a normal building unit is used. In this case, the connecting bolts (bolts above the washers) protrude from the upper frame of the building unit so that they do not move up and down. May not be able to be transported.

Therefore, when a building unit having a height higher than that of a normal building unit is used, a dedicated transportation vehicle having a low vehicle height is used, or a connecting bolt is not installed at a factory, and a building is used at a building site. Connection bolts must be attached to the upper frame of the unit.

[0009]

However, when a dedicated transportation vehicle having a low vehicle height is used, the transportation vehicle is expensive and the transportation cost is high.

In addition, when connecting bolts are to be installed at a building site, since surface materials are previously attached to both sides of the upper frame of the building unit, these surface materials hinder the mounting of the connection bolts. It takes time and effort. In addition, the connecting bolt must be lost or separately prepared at the construction site, which is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems in the above-mentioned conventional building unit with connecting bolts, and an object of the present invention is to make it possible to insert and remove connecting bolts in a building unit with connecting bolts. An object of the present invention is to provide a building unit with connecting bolts that can be transported to a building site by a transport vehicle and that can easily be attached to the building unit.

[0012]

In order to achieve the above object, in a building unit with a connecting bolt according to the present invention, a bolt insertion hole is provided in an upper frame of a wall panel of the building unit.
A plate-shaped metal fitting having a female screw hole overlapping the bolt insertion hole is attached to a lower surface and / or an upper surface of the upper frame,
A connection bolt with a head is screwed into the female screw hole of the plate-shaped fitting so as to protrude from the lower surface of the upper frame to the upper surface, and a + or-shaped driver groove is formed on an upper end surface of the connection bolt, Thus, the connecting bolt can be moved up and down.

[0013]

When the building unit with the connecting bolt according to the present invention is transported to a construction site, the connecting bolt is formed by a very simple operation using a screwdriver formed in the upper end surface of the connecting bolt. Can be retracted below the upper frame, and the connecting bolt can be easily projected above the upper frame at the construction site.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. FIG. 1 is a sectional view showing a main part of a building unit with a connecting bolt according to the present invention.
Reference numeral 0 denotes a wall panel of the wooden building unit, 11 denotes an upper frame of the wall panel, 12 denotes an outer wall material, and 13 denotes an inner surface material such as a gypsum board.

Note that an interior material such as a decorative cloth is attached to the surface of the inner surface material 13. A space between the outer wall material 12 and the inner surface material 13 is filled with a heat insulating material such as glass fiber as needed.

The upper frame 1 of the wall panel 10 of the building unit
1, bolt insertion holes 11a are provided at regular intervals. Further, a plate-shaped metal fitting 20 having a female screw hole 20a is attached to the lower surface of the upper frame 11 with a small screw 21 or a nail so as to overlap with the bolt insertion hole 11a.

The metal plate 20 is usually made of a thick steel plate. As shown in the figure, the female screw hole 20a of the plate-shaped metal fitting 20 may be formed by directly engraving the female screw hole 20a on a thick steel plate. A metal plate welded to the hole of the perforated steel plate may be used, and this metal tube may be attached so as to be inserted into the bolt insertion hole 11 a of the upper frame 11. Further, a plate-shaped metal fitting formed by welding a normal nut having an internal thread formed on the inner peripheral surface thereof to a hole of a perforated steel plate is used.
You may attach so that it may go below a.

The metal plate 20 having such a female screw hole 20a may be attached to the upper surface of the upper frame 11, or to both the upper and lower surfaces of the upper frame 11. However, plate-shaped bracket 2
In the case where the inner screw hole 0 is attached to the upper surface of the upper frame 11 of the wall panel 10, the female screw hole 20 a (metal cylinder portion or nut portion) does not protrude from the upper surface of the upper frame 11 directly into the thick steel plate. It is preferable to use one engraved with 20a.

Then, the female screw hole 20 of the plate-shaped metal member 20 is formed.
The connection bolt 30 with a head is screwed into a so as to protrude from the lower surface of the upper frame 11 to the upper surface. 31 is the head of the connection bolt 30 with a head. In addition, the connection bolt 30 with a head
Ordinary washers may be inserted in the head of.

The length of the bolt portion of the headed connection bolt 30 is set to a length that allows the upper-floor building unit to be connected by the headed connection bolt 30 when the headed connection bolt 30 is fully moved upward. Is set. At this time,
The head 31 or the washer of the connection bolt 30 with a head is
1 will be in contact with the lower surface.

Further, a + or-shaped driver groove 32 is formed on the upper end surface of the bolt portion of the headed connection bolt 30, and the headed connection bolt 30 is vertically moved by a driver using this driver groove 32. It has been made movable. Thus, the building unit A with the connecting bolt of the present invention is configured.

Building unit A with such connecting bolts
Is produced at the factory, and when it is transported to the building site,
A screwdriver is inserted into a driver groove 32 formed on the upper end surface of the headed connection bolt 30 to connect the headed connection bolt 30.
, The headed connecting bolt 30 is retracted downward to the vicinity of the upper surface of the upper frame 11 and transported so as to be below the transport limit height.

Then, at a construction site, a driver is inserted into the driver groove 32 and the connection bolt 30 with the head is rotated, so that the connection bolt 30 with the head is fully protruded above the upper frame 11. A unit such as a building unit or a roof unit to be connected is placed, and the head-attached connection bolt 30 and a nut combined therewith,
Each unit is tightly connected up and down to build a unit building.

[0024]

As described above, the building unit with the connecting bolt according to the present invention can be transported to the construction site by using the driver groove formed on the upper end surface of the connecting bolt with extremely simple operation. By using a screwdriver to retract the connecting bolt below the upper frame, the connecting bolt can be easily protruded above the upper frame at the construction site.

Therefore, it is possible to transport the vehicle to the construction site by using a general-purpose transport vehicle without using a dedicated transport vehicle having a low vehicle height, and it is possible to suppress an increase in transport costs. In addition, there is no troublesome and troublesome work such as installing the connecting bolt at the construction site,
There is no need to prepare separately, and the work of attaching the building unit is easy.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a building unit with a connecting bolt of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wall panel 11 Upper frame 11a Bolt insertion hole 20 Plate-shaped fitting 20a Female screw hole 30 Headed connection bolt 32 Driver groove

Claims (1)

[Claims] 1. A bolt insertion hole is provided in an upper frame of a wall panel of a building unit, and a plate-like metal fitting having a female screw hole overlapping with the bolt insertion hole is attached to a lower surface and / or an upper surface of the upper frame. A connecting bolt with a head is screwed into the female screw hole of the plate-shaped bracket so as to protrude from the lower surface of the upper frame to the upper surface, and a + or-shaped driver groove is formed on the upper end surface of the connecting bolt. A building unit with a connecting bolt, wherein the connecting bolt is movable up and down.