JPH06173366A - Mounting structure of girth bolt - Google Patents

Abstract

PURPOSE:To prevent the falling of a girth bolt by press-fitting the spring section of a washer into the upper opening of an inserting hole for the girth bolt while the engaging section of the washer is engaged with the peripheral section of the inserting hole when the bolt is inserted into the inserting hole. CONSTITUTION:When a girth bolt 1 is inserted into an inserting hole 34 for the girth bolt 1, the girth bolt 1 is pulled up upward and the left half section of the bolt 1 is fitted into the right recessed section 36 of a floor panel 30, and the right half section of the bolt 1 is fitted into the recessed section 37 of a girth 40, thus fixing the bolt 1. A spring section 24 is press-fitted into the upper opening 35 of the inserting hole 34 for the girth bolt so that the engaging section 23 of a washer 20 is abutted against the peripheral section of the upper opening 35. The wall panel 50 of a second floor is positioned at the upper section of the upper-side screw section 3 of the girth bolt 1, and the hole 52 of a core material 51 is fitted to the screw section 3 of the bolt 1, thus fixing the wall panel 50. Accordingly, when the girth bolt is installed, central alignment is conducted automatically, thus saving the labor of operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a body difference bolt for standing up a floor upper wall panel on a peripheral portion of a floor upper floor panel.

[0002]

2. Description of the Related Art FIG. 4 is a view showing a conventional mounting structure for a body difference bolt.

In FIG. 4, reference numeral 100 designates a body difference bolt, and the body difference bolt 100 is defined between the hole 202 of the wall panel 200 on the first floor, the floor panel 300 on the second floor and the body difference 400. It is inserted into the body difference bolt insertion hole 340, and is positioned in a state of penetrating the body difference bolt insertion hole 340.

From the standpoint of industrialization, the through hole 340 for the body difference bolt is set to have a larger diameter than the diameter of the body difference bolt 100, as shown in FIG.

Reference numeral 500 is a washer for preventing a drop, which is formed of a rectangular metal plate larger than the insertion hole 340 for the body difference bolt.

This washer 500 is fitted from the side of the upper threaded portion 120 of the barrel difference bolt 100. Before the first-floor wall panel 200 is erected, the washer 500 is locked on the upper surface of the first-floor wall panel 200 to prevent the barrel bolt 100 from falling, as shown in FIG.

The washer 500 has a barrel difference bolt 1
It is pulled up at the time of attaching 00, and is locked on the second floor panel 300 and the body difference 400 as shown in FIG.

Thus, by tightening the lower screw portion 110 of the body difference bolt 100 with a nut, the body difference bolt 100 is fixed while penetrating the inside of the insertion hole 340.

Reference numeral 600 is a wall panel on the second floor, and the hole 6
01 is fitted to the upper threaded portion 120 of the body difference bolt 100, and the upper threaded portion 120 is tightened with a nut, so that it is erected and fixed at a desired position on the second floor panel 300.

[0010]

However, in the above-described conventional body difference bolt mounting structure, it is difficult to position the body difference bolt 100 at the center position of the body difference bolt insertion hole 340. .

That is, since the diameter of the insertion hole 340 for the body difference bolt is set to be considerably larger than the diameter of the body difference bolt 100, it is a considerable skill for the operator to visually find the center position of the insertion hole 340. Requires.

Moreover, since the washer 500 is formed of a rectangular metal plate, even if the barrel difference bolt 100 is aligned with the center position of the bending insertion hole 340, a slight impact is generated as shown by the arrow in FIG. Thus, the washer 500 may slide and the position of the barrel difference bolt 100 may shift. In such a case, it is necessary to perform the alignment again, which complicates the work at the construction site.

The present invention has been made in order to solve the above-mentioned conventional man-made allowance, and its purpose is to automatically perform center alignment when the body difference bolt is attached, thereby saving labor in the field. An object of the present invention is to provide a mounting structure for a body difference bolt designed.

[0014]

In order to achieve the above object, according to the present invention, a drop preventing washer which can be engaged with an upper screw portion is fitted and the lower screw portion is a hole of a core material of a lower floor panel. With the body difference bolt inserted in the upper part of the lower floor wall panel pulled up, in the body difference bolt insertion hole defined by the recess of the core material of the upper floor panel and the recess of the body difference facing this recess ,
The upper screw part is fitted so as to project, and the washer for fall prevention is locked to the upper opening peripheral part of the insertion hole for the body difference bolt, and the lower thread part of the body difference bolt is connected to the downstairs. In the mounting structure of the body difference bolt in which the body difference bolt is fixed in the body difference bolt insertion hole by tightening the nuts from below the core material of the wall panel, the fall prevention washer is inserted through the upper screw part. A washer main body having a screw insertion hole at its center, locking portions projecting on both sides in the length direction of the washer body and capable of being locked to the upper opening peripheral edge portion, and provided on both sides in the width direction of the washer body. And a spring portion that can be press-fitted into the body difference bolt insertion hole.

[0015]

According to the present invention having the above-described structure, when the body difference bolt is fitted into the body difference bolt insertion hole, the spring portion of the washer is press-fitted into the upper opening of the body difference bolt insertion hole and the washer locking portion is inserted. Is locked to the upper opening peripheral portion of the insertion hole for the body difference bolt. This prevents the washer and the body difference bolt from falling.

As described above, when the washer is attached to the upper portion of the insertion hole for the body difference bolt, the body difference bolt is inserted into the screw insertion hole at the center of the washer body, so that the body difference bolt is automatically inserted into the body. It is positioned at the center of the differential bolt insertion hole.

Further, since the spring portion of the washer is press-fitted into the insertion hole for the body difference bolt, the washer does not move from its original mounting position.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a mounting structure for a body difference bolt according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a wall panel 5 on the second floor.
It is a body difference bolt for building 0.

The diameter of the barrel difference bolt 1 is set to, for example, 12 mm, and screw portions 3 and 4 are engraved on the upper and lower ends thereof.

This body difference bolt 1 is a wall panel 10 on the first floor.
It is transported from the factory to the construction site while being attached to the. That is, in the factory, the body difference bolt 10 is inserted into the hole 12 formed in the core material 11 of the wall panel 10, the washer 20 for falling prevention is fitted into the upper screw portion 3, and the washer is attached to the lower screw portion 4. A nut 6 is fitted via 5.

FIG. 2 is a view showing the drop prevention washer 20.

The washer 20 is formed by punching and bending a single metal plate, and has a flat washer body 21 at the center thereof.

The washer main body 21 is formed in substantially the same shape as an upper opening 35 of a body difference bolt insertion hole 34 (see FIG. 1) which will be described later, and at the center thereof, the upper screw portion 3 of the body difference bolt 1 is formed.
A screw insertion hole 22 into which is screwed is formed.

In the washer main body 21, the semicircular projecting portions on both sides in the lengthwise direction are the through holes 34 for the body difference bolt.
Locking portions 23, 2 for locking the peripheral portion of the upper opening 35
It is 3.

Spring portions 24, 24 are provided on both sides of the washer body 21 in the width direction. The spring portions 24, 24 are formed by bending both end portions of the washer body 21 in the width direction inward in a substantially U-shape, and have elastic force in the washer body width direction.

The size of this washer 20 is set in correspondence with the size of the upper opening 35 of the body difference bolt insertion hole 34. Specifically, the length l is equal to the vertical length of the upper opening 35, and the width m is set to be slightly larger than the lateral width of the upper opening 35.

At the construction site, as shown in FIG. 1, the body difference bolt 1 in which such a washer 20 is fitted in the upper threaded portion 3 is pulled up to the upper side of the wall panel 10 on the first floor and the floor on the second floor. It is attached to a body difference bolt insertion hole 34 formed between the panel 30 and the body difference 40.

This mounting state will be specifically described.

The through hole 34 for the body difference bolt is provided with the core material 31 of the floor panel 30 on the second floor laid on the upper surface of the wall panel 10 on the first floor.
It is defined by a concave portion 36 having a U-shaped cross section formed in a notch and a concave portion 37 having a U-shaped cross section formed in the body difference 40 so as to face the concave portion 36. It has a rectangular cross section with a width of 20 mm and a width of 30 mm.

Therefore, in order to fit the body difference bolt 1 into the body difference bolt insertion hole 34, the body difference bolt 1 is pulled up fully and the left half thereof is fitted into the recessed right side 36 of the floor panel 30,
The recess 37 of the body difference 40 is fitted to the right half of the body difference bolt 1 to fix the body difference 40 to the core 31 of the floor panel 30 by nailing or the like.

Then, the washer 20 is lowered from the position of the chain double-dashed line in FIG. 1 so that the locking portions 23, 23 come into contact with the peripheral edge portion of the upper opening 35 of the barrel difference bolt insertion hole 34, as shown in FIG. Then, the spring portions 24, 24 are pressed into the upper opening 35. In this case, the locking portions 23, 23 prevent the washer 20 and the body difference bolt 1 from falling.

In this state, when a wrench or the like is put into the peephole 13 of the wall panel 10 on the first floor and the nut 6 is tightened, the washer 20 is pressed against the peripheral portion of the upper opening 35 by the upper screw portion 3 and locked. As a result, the body difference bolt 1 is vertically fixed in the body difference bolt insertion hole 34.

When the barrel bolt 1 is attached in this way,
Since the body difference bolt 1 is supported by the screw insertion hole 22 at the center of the washer body 21, the body difference bolt 1 is inserted through the body difference bolt insertion hole 3
It is automatically positioned at the center of 4.

Moreover, since the length 1 of the washer body 21 is set to be equal to the vertical length of the upper opening 35, the washer 20
Does not move in the direction of arrow A in FIG. 3, and since the spring portions 24, 24 are press-fitted into the upper opening 35, arrow B
It does not move in any direction. Therefore, even if a slight impact is applied, the body difference bolt 1 is inserted into the body difference bolt insertion hole 3
It does not deviate from the center position of 4.

In this way, the floor panel 50 on the second floor is positioned above the upper screw portion 3 of the body difference bolt 1 which is accurately positioned, and the hole 52 of the core material 51 is fitted into the upper screw portion 3 to be looked into. By inserting a wrench or the like through the hole 53 and tightening the nut 7 to the upper threaded portion 3 via the washer 8, the second-floor wall panel 50 is accurately erected and fixed at a predetermined position.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the gist of the present invention.

[0039]

As described above, in the mounting structure for the body difference bolt of the present invention, when the washer is mounted on the upper portion of the body difference bolt insertion hole, the body difference bolt is automatically inserted into the body difference bolt insertion hole. Since it is positioned at the center position of the body and the barrel difference bolt does not move from the center position, it is possible to reduce the complicated work of positioning at the construction site,
As a result, there is an excellent effect that it is possible to save labor and speed up on-site work.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an attachment structure for a body difference bolt according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a washer for preventing a drop.

FIG. 3 is a perspective view showing a state in which a drop prevention washer is attached to a body difference bolt insertion hole.

FIG. 4 is a cross-sectional view showing a conventional body difference bolt mounting structure.

FIG. 5 is a perspective view showing a state in which a washer according to a conventional example is attached.

FIG. 6 is a cross-sectional view showing a fall prevention function of a washer.

[Explanation of symbols]

 1 Body Difference Bolt 3 Upper Screw Part 4 Lower Screw Part 6,8 Nut 10,50 Wall Panel 11,51 Core Material 12,52 Hole 20 Fall Prevention Washer 21 Washer Main Body 22 Screw Insert Hole 23 Locking Part 24 Spring Part 30 Floor panel 31 Core material

Claims (1)

[Claims] 1. A body-difference bolt in which a fall prevention washer capable of being locked to an upper threaded portion is fitted and a lower threaded portion is inserted into a hole in a core material of a lower floor panel is pulled up above the lower floor panel. In the state, in the body difference bolt insertion hole defined by the recess of the core material of the upper floor panel and the recess of the body difference facing this recess,
The upper screw part is fitted so as to protrude, and the washer for preventing fall is locked to the upper opening peripheral part of the insertion hole for the body difference bolt, and the lower thread part of the body difference bolt is connected to the downstairs. In the mounting structure of the body difference bolt in which the body difference bolt is fixed in the body difference bolt insertion hole by tightening the nut from below the core material of the wall panel, the fall prevention washer is inserted through the upper screw part. A washer main body having a screw insertion hole at the center, a locking portion protruding to both sides in the length direction of the washer main body and capable of being locked to the upper opening peripheral edge portion, provided on both sides in the width direction of the washer main body. And a spring portion capable of being press-fitted into the body-difference bolt insertion hole.