JP2000337337A - Metal fitting for fixing nut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal fitting for fixing a nut that can be manufactured simply and in low cost and set reliably as a hexagon nut positioned once has no fear of falling out, can be confirmed from the outside, can receive a force for preventing co-rotation efficiently and reduce welding area for fixing, and obtain the effect for moisture, ventilation, draining and the like sufficiently. SOLUTION: This metal fitting for fixing secures a space 8 for a nut, bends a metal plate 6 to an inverted U-shape to form side wall plates 9a, 9b and a top plate 10. A window 11 to correspond to a tapped hole 7a of a nut is formed on the top plate 10. A vertical slit 13 to which a corner 7b of a hexagon nut 7 is inserted is formed on the side wall plates 9a, 9b. The lower ends of the side wall plates 9a, 9b are bent horizontally to be fixing margins 12 left for welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for fixing a nut in a bolt connection of a structure such as a building or a bridge.

[0002]

2. Description of the Related Art When fastening a member made of a steel plate or a steel material with a bolt and a nut, a bolt is usually inserted from one side,
Screw the nut from the other side. In this way, it is possible to relatively prevent the bolt and nut from rotating together in the bolt joint.However, in a narrow space where it is not possible to obtain a sufficient space for screwing the nut from the opposite side, only the bolt is used for the nut. Since the nut is moved and screwed together, it is necessary to fix the nut in some way to prevent co-rotation.

In such a case, it is troublesome and troublesome to weld and fix each nut directly to the member one by one in the bolt insertion hole of the member. In addition, such welding fixation is limited before assembling the members, and is impossible after narrowing.

In addition, the heat of welding is applied to the nut, which may cause deterioration in quality. In addition, when fixing the nut, it is necessary to accurately align the hole of the member with the hole of the nut, thereby reducing the work efficiency. .

Therefore, a nut fixing bracket as shown in FIGS. 8 to 10 has been devised. This is done by providing an opening 1 leaving an inward edge flange at the top end, making the side wall 2 the same hexagonal surface as the nut, making the bottom surface an open surface, making the outer periphery slightly larger in diameter, and making the edge outward. The nut-shaped metal piece 4 as the fold-shaped skirt piece 3 is molded by a mold.

[0006] The case-shaped metal member 4 of the nut is placed on the plate body 5 so that the bottoms thereof are aligned with the open surfaces corresponding to the holes formed in the thin plate body 5, and the pleated skirt piece 3 is welded to the plate body. Fix to 5.

In this way, the hexagonal nut is placed in the nut case 4 through the hole formed in the plate 5 and the open surface of the bottom surface of the nut case 4 of the nut.
The hole of the hexagon nut and the hole of the joint member are set in the joint member together.

The hexagon nut fits in the case-shaped metal member 4 of the nut such that each side surface comes into surface contact with the inner surface of each side wall 2, thereby preventing co-rotation.

[0009]

However, FIG.
In the case of the nut fixture shown in FIG. 10, the case-shaped metal member 4 of the nut cannot be bent and formed to obtain the shape,
Due to mold molding, the manufacturing cost is considerably high.

Furthermore, even if the hexagonal nut is once stored in the nut case-shaped metal piece 4, the nut may fall off until it is set. Moreover, it is difficult to externally check whether or not the hexagon nut exists inside.

The fixing of the hexagonal nut is performed by making each side wall 2 of the nut case-shaped metal piece 4 come into surface contact with each side face of the hexagonal nut. It takes strongly for the whole. For this reason, the fixing of the case-shaped metal member 4 to the nut to weld the fold-shaped skirt piece 3 must be firmly performed, and the number of welding locations increases.

In addition to this, water such as rainwater easily accumulates in the case-shaped metal member 4, and it is easy to make a cause for accelerating the corrosion of the nut. Although air bleeding holes are formed in the folds of the fold-shaped skirt piece 3, this may be insufficient for draining water.

An object of the present invention is to eliminate the disadvantages of the prior art, to make it simple and inexpensive, to prevent the hexagon nut once stored from falling off, and to easily confirm the presence of the hexagon nut from outside. So you can set with confidence,
In addition, the nut that can efficiently receive the force to prevent co-rotation requires a small number of welding spots when fixing, and has a sufficient effect of moisture, ventilation, drainage, etc. It is to provide a fixing bracket.

[0014]

In order to achieve the above object, the present invention secures a space in which a nut can enter, and folds a metal plate into a horizontal U-shape to form a side wall plate and a top plate. Form a window corresponding to the screw hole of the nut, and also form a vertical slit in the side wall plate to insert the corner of the hexagon nut,
The bottom edge of the side wall plate is horizontal bending welding fixed margin,
In addition, the gist of the invention is to provide a falling piece that is bent at a right angle from the top plate at side opening of the front and rear surfaces of the metal plate body bent in a horizontal U-shape.

According to the first aspect of the present invention, since a product can be produced by bending a metal plate by pressing, it can be produced at low cost. In addition, the hexagon nut has a corner protruding outward from the vertical slit formed in the side wall plate, and is housed inside a metal plate body bent in a horizontal U-shape, so that it does not fall down, especially a thin plate body. When fixing a metal plate that is bent into a horizontal U-shape with a nut in this thin plate to provide a nut corresponding to the hole provided in the nut, the nut will come off regardless of the inclination of the thin plate. I will not do it.

Further, since the metal plate body bent in a horizontal U-shape with respect to the hexagon nut has many openings and gaps, the presence of the internal hexagon nut can be easily confirmed from the outside, and it is determined whether the nut has been dropped or inserted. It is visible. In addition to this, it is rich in moisture, ventilation and drainage effects, and there is no accumulation of rainwater or the like inside, so that the nut is not adversely affected.

In order to fit the hexagonal nuts in such a manner that the corners protrude outward from the vertical slits formed in the side wall plates, the side wall plates are slightly widened by hand, and the hexagon nuts are taken in and then returned. Frequently, such spreading can be easily performed without being restrained by other objects since the object is a side wall plate which is bent with respect to the top plate.

Further, the hexagon nut is a longitudinal slit formed in the side wall plate, and is prevented from rotating together with the side wall plate by line contact. As a result, unlike the case of the surface contact in the conventional example, when the co-rotation is prevented, the force applied to the entire metal plate body bent in a horizontal U-shape is small, and the metal plate bent in a horizontal U-shape is sufficient. To fix the body, the lower end of the side wall plate may be spot-welded near the corner of the horizontal bending welding fixing margin, and the number of welding points is small, and the fixing can be performed easily and quickly.

According to the second aspect of the present invention, in addition to the above operation, the falling piece which is bent at a right angle from the top plate is a positioning member for housing the hexagonal nut in a metal plate which is bent in a horizontal U-shape. , And the positioning can be easily performed simply by making the falling piece follow the side surface of the hexagon nut.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a used state of a nut fixing bracket of the present invention, and FIG. 2 is a perspective view showing a set state of the same. 4 to 7 show a perspective view, a bottom view, and a rear view, respectively.

In the nut fixing bracket of the present invention, a steel metal plate 6 is provided with a space 8 in which a hexagonal nut 7 is to be inserted, and a side plate 9a, 9b and a top plate 10 are formed. It was bent and formed by a press. Further, the side wall plates 9a, 9b
Was bent outward at a right angle to form a horizontal bent weld fixing margin 12.

A circular window 11 corresponding to the screw hole 7a of the hexagon nut 7 is formed in the top plate 10, and the side wall plate 9
The vertical slits 13 into which the corners 7b of the hexagon nut 7 are inserted are formed in a and 9b. This vertical slit 13 is provided in the side wall plates 9a, 9
The height of the hexagonal nut 7 protruding outwardly from here has a margin enough to allow the corner 7b of the hexagonal nut 7 to move.

Further, the front and rear surfaces of the metal plate body 6 bent in a horizontal U-shape form side openings 14, and the side openings 14 have falling pieces 15 bent from the top plate 10 at right angles.
Is arranged. In the illustrated example, the falling piece 15 has the same width as the side surface of the hexagon nut 7 and is spaced from the side wall plates 9a and 9b, but is not limited thereto. If there is no continuity, the width and height may be larger than those shown.

Next, the usage will be described. When the hexagon nut 7 is set using the thin plate member 5 having the hole 16 as shown in FIG. 2, the hexagon nut 7 is placed in the metal plate member 6 which has been bent in a horizontal U-shape first. 3, the metal plate 6 is attached to the plate 5 as shown in FIG.
Attach.

In order to fit the hexagonal nut 7 in the metal plate 6 bent in a horizontal U-shape, the side wall plates 9a and 9b are slightly widened by hand and returned again when the hexagonal nut 7 is positioned inside. For example, the hexagonal nut 7 is attached to the side wall plate 9a,
It fits in the form protruding outward from the vertical slit 13 formed in 9b.

At this time, the side surface 7c of the hexagonal nut 7 is joined to the piece 15 having a falling edge which is bent at a right angle from the top plate 10, so that positioning can be easily performed.

The metal plate 6 thus bent into a horizontal U-shape
And the hexagonal nut 7 are assembled together and do not come off, so the hole 16 and the screw hole 7a of the hexagonal nut 7 are set on the plate body 5 in correspondence with each other, and spot welding is performed around the corner of the fixing margin 12 by welding. Do 17

The plate member 5 to which a plurality of hexagonal nuts 7 are attached by a metal plate member 6 bent in a horizontal U-shape is used for installation of nuts by fastening bolts and nuts between members. Even when the hexagonal nut 7 is screwed into the nut 7 and turned, the hexagonal nut 7 is held down by the metal plate 6 bent in a horizontal U-shape, so that the hexagonal nut 7 is prevented from rotating together.

As another example of use, a hexagonal nut 7 can be attached by directly welding a metal plate 6 bent in a U-shape without using the plate 5.

Even in this case, since the welding heat does not need to be directly applied to the hexagon nut 7, there is no adverse effect.

[0031]

As described above, the nut fixing bracket of the present invention can be manufactured easily and inexpensively, and there is no danger of the hexagon nut once falling off, and the existence of the hexagon nut can be easily confirmed from the outside. It can be set with peace of mind because it can be set up, and because it can efficiently receive the force of preventing co-rotation, the welding place at the time of fixing is small, it does not take much trouble, and moisture, ventilation, drainage etc. The effect is sufficiently obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a used state of a nut fixing bracket of the present invention.

FIG. 2 is a perspective view showing a setting state of a nut fixing bracket of the present invention.

FIG. 3 is a plan view showing a nut fixing bracket according to an embodiment of the present invention, in which a nut is accommodated.

FIG. 4 is a perspective view showing one embodiment of a nut fixing bracket of the present invention.

FIG. 5 is a left side view showing one embodiment of the nut fixing bracket of the present invention.

FIG. 6 is a bottom view showing one embodiment of the nut fixing bracket of the present invention.

FIG. 7 is a rear view showing one embodiment of the nut fixing bracket of the present invention.

FIG. 8 is a front view showing a conventional example.

FIG. 9 is a plan view showing a conventional example.

FIG. 10 is a side view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Opening 2 ... Side wall 3 ... Pleated skirt piece 4 ... Nut case-shaped metal piece 5 ... Plate 6 ... Metal plate 7 ... Hexagon nut 7a ... Screw hole 7b ... Corner 7c ... Side surface 8 ... Space 9a, 9b ... Side wall plate 10 ... Top plate 11 ... Window 12 ... Welding fixed margin 13 ... Vertical slit 14 ... Side opening 15 ... Falling piece 16 ... Hole 17 ... Spot welding

Claims (2)

[Claims] 1. A metal plate is bent into a U-shape so as to form a side wall plate and a top plate while securing a space in which a nut can enter, and a window corresponding to a screw hole of the nut is formed in the top plate. ,Also,
A nut fixing bracket, wherein a vertical slit is formed in a side wall plate to insert a corner of a hexagonal nut, and a lower end of the side wall plate is horizontally bent and welded. 2. The nut fixing bracket according to claim 1, wherein a falling piece that is bent at a right angle from the top plate is provided at a side opening on the front and rear surfaces of the metal plate body bent in a horizontal U-shape.