JP2001311221A - Clamping structure and clamping bolt for building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the clamping structure of a building unit, by which transport works and installation works can be conducted without projecting a clamping bolt from an upper frame while the building unit can be clamped and unified vertically and smoothly. SOLUTION: In the clamping structure at a time when the building unit is clamped and unified vertically, the structure is composed of an upper-frame clamping hole 17 formed to the upper frame 15 of a lower-side unit 11, a lower- frame clamping hole 19 formed to the lower frame 18 of an upper-side unit 12 and the clamping bolt 16 clamped by conforming the upper-frame clamping hole 17 and the lower-frame clamping hole 19, and a double-cut bolt having an upper-side male screw section 21 and a lower-side male screw section 22 in upper and lower sections, holding a central non-male screw section 10 is used as the clamping bolt 16 and an engaging recessed section 23, with which a rotary tool such as a wrench, a driver or the like is engaged, is formed to the upper end face of the clamping bolt 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening structure for vertically integrating a building unit and a fastening bolt used for the fastening structure.

[0002]

2. Description of the Related Art A building unit is a box-shaped structure constituting a unit-type building, and is produced in advance at a factory by attaching floor panels, wall panels, and the like to a frame. After being transported to the building site, it is installed above the foundation and building units on the lower floor,
A unit building is constructed.

In order to join and integrate a building unit (including a roof unit and the like) of an upper floor portion with a building unit of a lower floor portion, generally, a building unit (lower unit) of a lower floor portion is used.
The upper frame fastening hole formed in the upper frame is aligned with the lower frame fastening hole formed in the lower frame of the building unit (upper unit) on the upper floor, and integrated by fastening with fastening bolts. Is done.

[0004] Generally, the fastening bolts are difficult to install on a building site after the lower unit is completed, because the wall panel or the like attached to the upper frame of the lower unit is a hindrance. Is attached to the upper frame fastening hole at the time of mounting, and is fixed in advance with the upper portion protruding from the upper frame. Therefore, when the lower unit is transported after the completion of the lower unit, or when the lower unit or the upper unit is installed, the protruding fastening bolts become an obstacle.

That is, in the conventional technique, it is necessary to cure the projecting portion of the fastening bolt, which increases the number of steps and
There was a problem that it took time to recover the curing during the installation work. In addition, it has become difficult to clear the height limit for transportation during transportation, and to make the scaffold above the upper frame unstable during installation work.

SUMMARY OF THE INVENTION The present invention has been made in view of these conventional problems, and can carry out a transporting operation or an installation operation without projecting a fastening bolt from an upper frame and smoothly move a building unit up and down. An object of the present invention is to provide a fastening structure of a building unit that can be integrally fastened and a fastening bolt used for the fastening structure.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a fastening structure for vertically fastening and integrating building units in an upper frame fastening hole formed in an upper frame of a lower unit and a lower frame formed in a lower frame of an upper unit. A lower frame fastening hole, and a fastening bolt which is fastened by aligning the upper frame fastening hole with the lower frame fastening hole. The fastening bolt is provided with upper male screws vertically above and below the central non-male screw portion. And a double-sided bolt having a lower male screw portion and an upper end surface thereof is provided with an engagement recess for engaging a rotating tool such as a wrench or a screwdriver, and the fastening bolt is
When screwed into a female screw member fixed to the lower surface of the upper frame from above and attached to the upper frame fastening hole, when screwed to the upper end of the lower male screw portion, the upper end surface of the fastening bolt is When the upper unit is located below the upper surface of the upper frame and the upper unit is fastened and integrated with the lower unit, the fastening bolt is protruded above the upper frame by a rotating tool engaged with the engagement recess. By fastening the nut member to the upper male screw portion by inserting the upper male screw portion into the lower frame fastening hole, the upper unit is fixed to the lower unit. By providing
The above object has been achieved (the invention of claim 1).

According to the present invention, there is provided a fastening bolt for use in the fastening structure of a building unit according to claim 1, wherein an upper male screw portion and a lower male screw are provided above and below a central non-male screw portion. And an engagement recess for engaging a rotating tool such as a wrench or a screwdriver is provided on the upper end surface thereof, and is screwed into a female screw member fixed to the lower surface of the upper frame from above. When the screw is screwed up to the upper end of the lower male screw portion when being attached to the upper frame fastening hole, the upper end surface of the fastening bolt is located below the upper surface of the upper frame, and When the fastening bolt is protruded above the upper frame by the engaged rotating tool, the upper male screw portion is inserted into the lower frame fastening hole and protrudes to the upper surface of the lower frame. Note that the thread and the lower male thread are formed. By providing a fastening bolt to be, in which to achieve the above object (a second aspect of the present invention).

The upper frame in the above description is a member constituting a horizontal frame at the upper end of the building unit, and includes not only a so-called upper frame but also an upper frame and a head tie. The lower frame is a member constituting a horizontal frame at the lower end of the building unit, and is joined so as to overlap with the upper frame to constitute a joint between the lower unit and the upper unit. The upper end surface of the fastening bolt is positioned below the upper surface of the upper frame as long as the upper end surface does not protrude from the upper surface of the upper frame and does not interfere with the upper surface. Some cases are included.

[0010]

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The fastening structure of a building unit according to an embodiment of the present invention includes, for example, as shown in FIG. 1, a first floor unit (lower unit) 11 installed along a top end surface of a base 10 and a second floor unit. (Upper unit) 12 is installed and joined and integrated. Here, the lower unit 1
The 1 and the upper unit 12 are produced in advance in a factory by attaching floor panels 32, wall panels 33, and the like to vertical and horizontal frames 30, 31, and are transported to a building site. In the upper frame 15 of the lower unit 11 in which the upper frame 13 and the head tie 14 are superimposed, fastening bolts 16 are provided at three places on the long side (see section A) and two at each short side. The lower unit 11 and the upper unit 12 are vertically integrated through these fastening bolts 16 (see section B).

That is, as shown in FIGS. 2 and 3D, the fastening structure of the building unit according to the present embodiment includes an upper frame fastening hole 17 formed in the upper frame 15 of the lower unit 11 and an upper unit fastening hole 17. The lower frame fastening hole 19 formed in the lower frame 18 (see FIG. 1), the upper frame fastening hole 18 and the lower frame fastening hole 1
9 and a fastening bolt 16 that is fastened by matching the center non-male portion 20 with an upper male thread portion 21 and a lower male thread portion 22 above and below the central non-male thread portion 20. A hexagonal hole 23 is formed on the upper end surface of the double-sided bolt for engaging a hexagon wrench 24 (see FIG. 3) as a rotating tool.

Further, the fastening bolt 16 is attached to the upper frame 15.
The upper frame 13 is attached to the upper frame fastening hole 18 so as to be screwed from above into a tap-notch washer 25 as a female screw member fixed to the lower surface of the upper frame 13. At this time, when screwing up to the upper end of the lower male screw portion 22, the upper end surface of the fastening bolt 16 is located below the upper surface of the head link 14 constituting the upper end frame 15 (FIG. 3B). reference). When the upper unit 12 is fastened and integrated with the lower unit 11, the fastening bolt 10 is projected above the upper frame 15 by the hexagon wrench 24 engaged with the hexagon hole 23 (FIG. 3).
(See (c)), the upper male screw portion 21 protruding from the upper surface of the lower frame 18 by inserting the upper male screw portion 21 into the lower frame fastening hole 19.
The upper unit 12 is fixed to the lower unit 11 by fastening the nut member 26 to the lower unit 11.

The fastening bolt 16 has a diameter of, for example, 12 mm.
It is a double-sided bolt with a length of 156 mm and a central length of 61
15 mm above and below the non-male thread 20 mm
Upper male thread 21 and lower male thread 22 of 80 mm in length
And As a result, the fastening bolt 16 is inserted into the upper frame fastening hole 17 formed in the upper frame 15 having a height of 76 mm, which is formed by superimposing the upper frame 13 and the head tie 14, on the 13 mm diameter. When the lower male screw portion 22 is screwed and mounted, as described above, when the lower male screw portion 22 is screwed up to the upper end of the lower male screw portion 22, the upper end surface of the fastening bolt 16 is lower than the upper surface of the upper end frame 15. When the fastening bolt 16 is located above the upper frame 15, the upper male screw portion 21 is inserted into the lower frame fastening hole 19 and the lower frame 18 is inserted.
An upper male screw portion 21 and a lower male screw portion 22 are formed so as to protrude from the upper surface.

The tap-cut washer 25 into which the lower male screw portion 22 of the fastening bolt 16 is screwed has a diameter of 50 mm and a thickness of 6 mm.
mm-shaped disc-shaped member, and a female screw hole 27 in which a female screw is formed by tapping is opened at the center thereof, and the lower male screw portion 22 is screwed into the female screw hole 27. The tap-cut washer 25 is disposed concentrically with the upper frame fastening hole 17 on the lower surface of the upper frame 15, and is driven by driving a nail 29 through a nail hole 28.
Is fixed to the lower surface of the. In addition, as the female screw member, in addition to the washer 25 with a tap, a hardware 40 or the like in which a nut 42 is integrally fixed to a washer 41 by welding or the like can also be used.

According to the present embodiment, the fastening bolt 16 is previously installed on the upper frame 15 when the lower unit 11 is manufactured. That is, as shown in FIG.
5, the fastening bolt 16 is inserted from the lower male screw portion 22 side into each upper frame fastening hole 17 to which the tap-cut washer 25 is attached on the lower surface, and as shown in FIG. The hexagonal wrench 24 engaged with the hexagonal hole 23 is used to screw the fastening bolt 16 to the washer 25 with tap. By turning the fastening bolt 16 with the hexagon wrench 24 until it cannot be tightened downward, it is screwed up to the upper end of the lower male screw portion 22, whereby the upper end surface of the fastening bolt 16 is positioned lower than the upper surface of the upper end frame 15. I do.

Such a fastening bolt 16 is used for the upper end frame 1.
The lower unit 11 is transported and installed in a state where it does not protrude from the upper surface of the lower unit 5 so that the fastening bolt 16
It is not necessary to carry out curing, and it is possible to avoid an increase in man-hours and recovery of curing, without affecting the height of the transportation limit during transportation, and at the time of installation work.
It does not destabilize the scaffold on 5.

Above the lower unit 11, the upper unit 12 moves the lower frame 18 to the upper frame with the lower frame fastening hole 19 of the lower frame 18 aligned with the upper frame fastening hole 17 of the upper frame 15. 15 and closely mounted.

After the upper unit 12 has been installed, the hexagon wrench 24 is engaged with the hexagon hole 23 at the upper end, and the fastening bolt 16
Is rotated to the opposite side to protrude above the upper end frame 15, and the upper male screw portion 21 is inserted into the lower frame fastening hole 19 (see FIG. 3C), and the upper male screw protrudes above the lower frame 18. The nut member 26 is fastened to the screw portion 21 (FIG. 3).
(D)). By performing such a fastening operation for each of the matched lower frame fastening holes 19 and upper frame fastening holes 17, the upper unit 12 can be smoothly fixed to the lower unit 11.

That is, according to the present embodiment, the transporting operation and the installation operation can be performed without projecting the fastening bolt 16 from the upper end frame 15, and the upper unit 12 is smoothly fastened to the lower unit 11 up and down. Can be integrated.

Further, according to the present embodiment, the fastening bolt 1
6 is provided with the non-male thread portion 20 between the upper male thread portion 21 and the lower male thread portion 22, so that the fastening bolt 16
When moving downward while screwing into the washer 25 with tap, the human error can be avoided without going too far downward.

Further, according to the present embodiment, the fastening bolt 16 attached to the upper frame fastening hole 17 is attached to the lower unit 11.
It can be used as a bolt for locking a lifting wire or chain, or can be used to position the upper unit 12 by protruding from the upper end frame 15 before installation of the upper unit 12.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the present invention
In addition to the case where the unit on the second floor is installed on the unit on the first floor, it can be adopted also when installing the unit on the third floor above the unit on the second floor, or when installing the roof unit, etc. It can be adopted as a connection structure of building units of various shapes.
Further, the engaging concave portion of the fastening bolt is not necessarily required to be a hexagonal hole for a hexagonal wrench, but may be a driver groove or the like. Furthermore, when attaching the fastening bolt to the upper frame, the lower male screw portion of the fastening bolt is screwed into the female screw member in advance and integrated, and the upper portion of the fastening bolt is moved from the lower side of the upper frame to the upper frame. By fixing the female screw member to the lower surface of the upper frame while inserting it into the fastening hole, the fastening bolt can be attached to the upper frame.

[0023]

As described above in detail, according to the fastening structure and the fastening bolt of the building unit of the present invention, the carrying work and the installation work can be performed without projecting the fastening bolt from the upper frame. The building units can be smoothly integrated vertically.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first-floor unit and a second-floor unit which are fastened and integrated by a building unit fastening structure according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a fastening structure of a building unit according to an embodiment of the present invention.

FIGS. 3A to 3D are process diagrams illustrating a fastening structure of a building unit according to an embodiment of the present invention.

[Explanation of symbols]

 11 Unit on the first floor (lower unit) 12 Unit on the second floor (upper unit) 13 Upper frame 14 Head tie 15 Upper frame (Upper frame) 16 Fastening bolt 17 Upper frame fastening hole 18 Lower frame 19 Lower frame fastening hole 20 Non-male screw part 21 Upper male screw part 22 Lower male screw part 23 Hexagon hole (engagement concave part) 24 Hex wrench (rotating tool) 25 Washer with tap cut (female screw member) 26 Nut member 27 female screw hole

Continued on front page F term (reference) 2E125 AA13 AB12 AC23 AG04 AG12 BB08 BB30 BE05 BF03 CA04 CA09 CA25 CA26 EA17 EA33 EB04

Claims (2)

[Claims] 1. A fastening structure for vertically fastening and integrating building units, comprising: an upper frame fastening hole formed in an upper frame of a lower unit; a lower frame fastening hole formed in a lower frame of an upper unit; It comprises a fastening bolt which is fastened by aligning the frame fastening hole with the lower frame fastening hole. The fastening bolt has an upper male screw portion and a lower male screw portion above and below the central non-male screw portion. An engagement recess for engaging a rotating tool such as a wrench or a screwdriver is provided on the upper end surface of the double-sided bolt, and the fastening bolt is provided on a female screw member fixed to the lower surface of the upper frame. When being screwed from above and attached to the upper frame fastening hole, when screwed to the upper end of the lower male screw portion, the upper end surface of the fastening bolt is located below the upper surface of the upper frame, When fastening the unit to the lower unit, The fastening bolt is protruded above the upper frame by a rotating tool engaged with the concave portion, the upper male screw portion is inserted into the lower frame fastening hole, and a nut member is fastened to the upper male screw portion. A fastening structure for a building unit, wherein an upper unit is fixed to a lower unit. 2. A fastening bolt for use in a fastening structure for a building unit according to claim 1, comprising an upper male screw portion and a lower male screw portion above and below a central non-male screw portion. The upper frame has an engagement recess for engaging a turning tool such as a wrench or a screwdriver, and is screwed into a female screw member fixed to the lower surface of the upper frame from above, thereby forming an upper portion. When the screw is screwed to the upper end of the lower male screw portion when attached to the frame fastening hole, the upper end surface of the fastening bolt is located below the upper surface of the upper frame, and the engagement bolt engages with the engagement recess. When the fastening bolt is projected above the upper frame by a power tool, the upper male screw portion and the lower male screw portion are inserted so that the upper male screw portion is inserted into the lower frame fastening hole and projects to the upper surface of the lower frame. A fastening screw, characterized in that a side male screw portion is formed. Door.