JPH0739455Y2 - Anchor nut fixing structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor nut fixing structure for fixing an anchor nut to a material to be fixed, such as a thin metal plate or an aluminum mold material.

[0002]

2. Description of the Related Art Conventionally, when screwing a small screw, a bolt or the like onto a thin metal plate or an aluminum mold, etc., a screw hole is directly provided or an anchor nut is fixed to a place where the bolt or the like is repeatedly attached and detached. Anchor nuts are used. Conventionally, the anchor nut 11 is shown in FIG. 9 and FIG.
As illustrated in FIG. 2, it is provided with a caulking fixing portion 13 having an outward flange portion 12 at one end, and has a substantially cylindrical shape with a female screw portion 14, and the inner diameter of the caulking fixing portion 13 is smaller than the root diameter of the female screw portion 14. Is also large and thin. As shown in FIG. 8, the thin steel plate 15 fixed to the anchor nut 11 is provided with a circular nut fitting fixing hole 16 in a penetrating manner.
Insert the anchor nut 11 into the 16 from the end of the female screw portion 14 side, and with the outward flange 12 abutting on one plate surface 15A of the thin steel plate 15, the caulking fixing portion 13 is Board surface 15B
It is pressed so that it expands along the bulge, and the bulge 17 and the outward flange 12
The thin steel plate 15 is sandwiched and fixed by both sides.

[0003]

By the way, in the above prior art, when the bolts and the like are repeatedly attached and detached, the thin steel plate 15
The anchor nut 11 is loosened between the anchoring state and becomes relatively rotatable, and when a bolt or the like is screwed into the female thread portion 14 of the anchor nut 11, the anchor nut 11 rotates together with the bolt or the like and tightens the bolt or the like. There is a problem that it cannot be fixed.

The present invention has been devised by paying attention to the above-mentioned drawbacks, and the purpose thereof is that the anchor nut does not rotate relative to the plate member even if the bolts and the like are repeatedly attached and detached, (EN) An anchor nut fixing structure capable of securely screwing a bolt or the like onto an anchor nut.

[0005]

In the present invention, the above object is achieved.
The following technical measures were taken to achieve this. That is, this consideration
The plan isFixed materialIn the nut fitting fixing hole that is provided through the
A cylindrical fixing part having an outward flange at the outer end is provided.
Insert and fix the anchor nut with the threaded part
In structure,Surface of the fixed material on the outer end side of the fixing hole
ToThe aboveForming a groove having a width equal to or larger than the diameter of the fixing hole,
Notch in parallel with the outward flange of the nut so that it fits in the groove.
The feature is that a fitting and locking surface is formed.

[0006]

[Operation] According to the present invention, the outer end side of the nut fitting fixing hole 3
On the facing wall surface 4A of the groove 4 formed on the surface 1A of the fixed material 1 of
Mating locking surface 8 formed on the outward flange 5 of the anchor nut 2
Is engaged, the anchor locking surface of the anchor nut 2
8, is restrained in the groove 4 facing the wall 4A of the fixed member 1, the fixed
The anchor nut 2 does not rotate relative to the material 1 , and the bolts or the like can be securely screwed in or removed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, 1 is a thin steel plate (fixed material) , 2
Is an anchor nut, and the thin steel plate 1 has a nut fitting fixing hole 3
Of the thin steel plate 1 on the outer end side of the fixing hole 3
A groove 4 on the surface 1A that is the same as the diameter of the fixing hole 3 or slightly wider
Are formed. The anchor nut 2 has a substantially cylindrical shape, and as shown in FIGS. 2 and 3, is provided with a cylindrical fixing portion 6 having an outward flange portion 5 at its outer end, and except for the fixing portion 6, bolts and the like are provided. It is equipped with a female thread part 7 that is screwed in, and a fixed part 6
The inner diameter of is larger than the root diameter of the female screw portion 7, and has a thin wall suitable for caulking and fixing. Further, as shown in FIG. 2, the outward flange 5 is notched on both sides in parallel, and a fitting locking surface 8 that can be fitted between the facing wall surfaces 4A of the groove 4 of the thin steel plate 1 is formed.
Are formed.

Therefore, when the anchor nut 2 of the thin steel plate 1 is fitted and fixed, the anchor nut 2 is fitted with its outer end on the female screw portion 7 side from the groove 4 side of the thin steel plate 1 to face the wall surface 4A of the groove 4. With the mating locking surface 8 of the anchor nut 2 fitted to and the facing flange portion 5 abutting on the outer end surface 1A of the thin steel plate 1,
Pressure is applied so that the caulking fixing portion 6 expands along the other plate surface 1B of the thin steel plate 1, and as shown in FIG.
The thin steel plate 1 is fixed by caulking so that it is sandwiched from both sides 1A and 1B by 9 and the outward flange 5.

According to the above-described embodiment, since the fitting and locking surface 8 of the anchor nut 2 is fitted and locked on the facing wall surface 4A of the groove 4 of the thin steel plate 1, the anchor nut 2 and the thin steel plate 1 are opposed to each other. Since it does not rotate, the bolt or the like that is screwed into the female thread portion 7 of the anchor nut 2 does not rotate together with the anchor nut 2, and the fastening and fixing can be reliably performed. 4 and 5 show an embodiment in which the anchor nut 2 is fixed to a window frame or the like (aluminum sash) 10 made of an aluminum alloy, and the outer end surface 10A of the anchor nut fitting fixing hole 3 is shown.
A groove 4 is formed in the groove 4, and the fitting locking surface 8 of the anchor nut 2 is fitted and locked to the facing wall surface 4A of the groove 4 to prevent relative rotation of the anchor nut 2.

6 and 7 show another example of the groove shape.
Is different from each of the above-described embodiments in that the anchor nut 2 has an elongated hole shape, similarly to the embodiment shown in FIGS.
Are fitted and fixed. The present invention is not limited to the above embodiment, and, for example, the shape of the anchor nut 2 can be appropriately modified in design.

[0011]

As described above, according to the present invention , the nut fitting fixing hole penetratingly provided in the fixed material is provided with the cylindrical fixing portion having the outward flange portion at the outer end, and the internal thread portion is provided. in the structure that fits but because fixing an anchor nut with the
The surface of the fixing member of the outer end side of the fixing hole, the diameter or width of the fixing hole to form a groove having, Ide parallel notches to fit the outward flange portion of the nut in the groove fitting Since the locking surface is formed, relative rotation between the anchor nut and the plate material etc. can be completely prevented, and even if bolts etc. are repeatedly attached to and detached from the anchor nut, it can be securely screwed. it can.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a plan view,
(B) is a longitudinal sectional view.

FIG. 2 is a plan view of an anchor nut.

FIG. 3 is a partially cutaway sectional view of FIG.

FIG. 4 is a plan view of an anchor nut fixing portion of an aluminum mold member.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a plan view showing another example of the groove shape of the plate material.

7 is a cross-sectional view taken along the line BB of FIG.

FIG. 8 is a vertical sectional view of a conventional example.

FIG. 9 is a plan view of a conventional anchor nut.

10 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

1 Fixed material (thin steel plate) 1A Surface of fixed material on the outer end side of anchor nut fitting fixing hole 2 Anchor nut 3 Anchor nut fitting fixing hole 4 Groove 4A Opposing groove surface 5 Outward flange portion 6 Fixing portion 7 Female thread portion 8 Mating locking surface

Claims (1)

[Scope of utility model registration request] 1. An anchor nut having a cylindrical fixing portion having an outward flange portion at an outer end and having a female screw portion is fitted and fixed by fitting in a nut fitting fixing hole penetratingly provided in a fixed material. Fixed structure on the outer end side of the fixing hole
On the surface of the wood, wherein a groove having a diameter more than the width of the fixing hole, and the outward flange portion of the nut to form the groove fitting engaging surface Ide parallel notches to fit Anchor nut fixing structure.