JP2001020931A - Nut washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hasten a fastening work by forming a nut washer in such constitution that a spring member is interposed between a nut and a washer and the nut and the washer are engaged with each other to integrate with each other. SOLUTION: A nut 3 has a hole 31 provided with a spiral groove 32 having a prescribed size on a center, and a recessed part fitted to a projection part of a washer 2 is arranged. The washer 2 has a hole 21 having a prescribed size on a center, and also has a projection part fitted to the recessed part of the nut 3 which is larger than the hole 21. In a nut washer 1, a spring member 4 is inserted between the nut 3 and the washer 2, the washer 2 is calked and engaged with the nut 3, and they are formed integratedly. A sufficient clearance is formed between the nut 3 and the washer 2 so as to have the roll of a spring washer. It is thus possible to hasten a fastening work without giving such inconvenience that the washer 2 falls down during working.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut washer integrally formed with a nut and a washer.

[0002]

2. Description of the Related Art Conventionally, when tightening with a bolt and a nut, it has been necessary to separately purchase a washer, a spring washer and the like in addition to the nut, separately put these nuts and washers into the bolt, and then tighten.

[0003] However, during this tightening operation, a washer, a spring washer or the like is dropped down, and the operation is often troublesome, requiring much labor and time more than necessary.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a nut and a washer capable of quickly performing a tightening operation with a bolt and a nut. An object of the present invention is to provide a nut washer having an integral structure.

[0005]

In order to achieve the above object, according to the present invention, a spring member is interposed between a nut and a washer, and the nut and the washer are integrally formed. It is a nut washer.

According to a second aspect of the present invention, there is provided a nut provided with a hole formed with a spiral groove of a predetermined size at the center of the nut, and a hole larger than the hole provided at a position separated from the hole. And a washer provided with a hole having the same size as the hole provided at the center of the nut at the center of the washer and having a hole larger than the hole overlapped at a position separated from the hole. A semi-circular guide groove is provided on the back surface, and a boss that engages with the guide groove of the nut is provided upright on the back surface of the washer. The nut washer engages the nut and the washer.

A third aspect of the present invention is a nut washer for roughening the surface of the washer.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show one embodiment of the nut washer of the present invention.
(A) and (b) are a back view and a longitudinal sectional view of a nut, respectively.
2A and 2B are a back view and a longitudinal sectional view of the washer, respectively. FIG. 3 is a side view of an integrally formed nut washer, and FIG. 4 is a longitudinal sectional view thereof.

As shown, the nut washer 1 of the present embodiment is integrally formed by interposing a spring member 4 between the nut 3 and the washer 2 and engaging the nut 3 and the washer 2. .

Here, the nut 3 is, as shown in FIG.
A hole 31 having a spiral groove 32 of a predetermined size formed at the center thereof, and a concave portion 33 fitted with the convex portion 22 of the washer 2.
Is provided.

On the other hand, as shown in FIG. 2, the washer 2 has a hole 21 having a predetermined size at the center thereof, and a protrusion 22 which is slightly larger than the hole 21 and is fitted to the recess 33 of the nut 3. Have.

Therefore, the nut washer 1 is provided between the nut 3 and the washer 2 by a spring member 4.
, And the washer 2 is caulked to the nut 3 to be engaged with the nut 3 to be integrated. The nut washer 1 can also serve as a spring washer by providing a sufficient gap between the nut 3 and the washer 2.

According to the nut washer 1 of the present invention, as described above, the nut 3 and the washer 2 are engaged with each other to form an integral structure, so that there is no inconvenience such as dropping the washer during work. Fastening work can be done promptly.

FIGS. 5 to 7 show other embodiments of the nut washer of the present invention. FIGS. 5 (a) and 5 (b) are respectively a rear view and a longitudinal sectional view of the nut, and FIGS.
(A) and (b) are a back view and a longitudinal sectional view of a washer, respectively, and FIG. 7 is a longitudinal sectional view of a nut washer integrally formed.

The nut washer 5 of the present embodiment is such that a nut 6 and a washer 7 are engaged as shown in the figure.

Here, the nut 6 is, as shown in FIG.
A hole 61 having a spiral groove 63 formed by cutting a predetermined size, for example, a 10 mm tap, is provided at the center of the nut, and the hole 61 having a center slightly away from the center of the hole 61 is provided.
A larger hole 62, for example, a 12 mm hole is provided, and the nut is entirely formed in a gourd-shaped hole. In addition, on the back surface of the nut 6, a concave portion 64 that fits with the convex portion 73 of the washer 7 is provided, and a semicircular guide groove 65 is provided.

On the other hand, as shown in FIG. 6, the washer 7 has a hole 71 of the same size as the hole 61 provided at the center of the nut 6 at the center of the washer, for example, a hole 71 of 10 mm. A hole 72 of, for example, 12 mm larger than the hole 71 is provided at a position slightly apart from the hole 71. Like the nut 6, the hole 72 has a gourd-shaped hole as a whole. And the back surface of the washer 7 is
It has a projection 73 that is slightly larger than these holes 71 and 72 and that fits into the recess 64 of the nut 6, and has a boss 74 that engages with the guide groove 65 of the nut 6. Further, the surface of the washer 7 forms a rough surface 75 for preventing slip.

The nut washer 5 of the present embodiment is such that the nut 6 and the washer 7 configured as described above are engaged with each other, and the projection 73 of the washer 7 is fitted into the recess 64 of the nut 6. The boss 74 of the washer 7 is engaged with the guide groove 65 of the nut 6.

When such a nut washer 5 is used, for example, with a bolt of 10 mm, a larger 1 mm
Since the 2 mm hole is provided, the user can quickly bring the 10 mm bolt to any position without turning it, and can tighten the bolt at a predetermined position. That is, at this time, since the surface of the washer 7 is rough and does not slip, the nut 6 is rotated by 180 degrees while being guided by the guide groove 65 engaging with the boss 74, and the hole opened in the gourd shape becomes 10. It functions as a millimeter nut and washer, and the nut washer 5 can firmly tighten the bolt.

When removing the nut washer 5, turning the nut washer 5 causes the nut 6 to rotate 180 degrees in the opposite direction to the above, and the nut washer 5 can be easily removed by the hole opened in a gourd shape.

According to such a nut washer 5,
As described above, a gourd-shaped hole is provided in each of the nut 6 and the washer 7, and the nut 6 and the washer 7 are engaged with each other so that even if a long bolt is used, it is not turned at any position. The bolt can be quickly and securely tightened at a predetermined position.

Such a nut washer 5 is used in places where the bolt is long and the nut must be turned dozens of times in the past, places where the nut is difficult to turn due to a small space, places where the nut is to be fastened quickly, and the like. It is particularly preferred to use
It can be used for concrete formwork nuts, building nuts, and all other places where nuts are used.

[0023]

As described above in detail, according to the nut washer of the present invention, since the nut and the washer are integrally formed by engaging, the inconvenience of dropping the washer during the operation is eliminated. And can perform the tightening work promptly.

According to the nut washer of another embodiment of the present invention, a gourd-shaped hole is provided in each of the nut and the washer, and the nut and the washer are caulked and used, so that even a long bolt can be used. It can be carried without turning in any position, and the bolt can be quickly and securely tightened in a predetermined position.

[Brief description of the drawings]

FIGS. 1A and 1B are a back view and a longitudinal sectional view of a nut, respectively.

FIGS. 2A and 2B are a back view and a longitudinal sectional view of a washer, respectively.

FIG. 3 is a side view of an integrated nut washer.

FIG. 4 is a longitudinal sectional view of the same.

FIGS. 5A and 5B are a back view and a longitudinal sectional view of a nut, respectively.

FIGS. 6A and 6B are a back view and a longitudinal sectional view of a washer, respectively.

FIG. 7 is a longitudinal sectional view of a nut washer integrally formed.

[Explanation of symbols]

 Reference Signs List 1 nut washer 2 washer 21 hole 22 convex portion 3 nut 31 hole 32 spiral groove 33 concave portion 4 spring member 5 nut washer 6 nut 61 hole 62 hole 63 spiral groove 64 concave portion 65 guide groove 7 washer 71 hole 72 hole 73 convex portion 74 boss 75 rough surface

Claims (3)

[Claims] 1. A nut washer, wherein a spring member is interposed between the nut and the washer, and the nut and the washer are engaged to form an integral structure. 2. A nut having a hole formed with a spiral groove of a predetermined size at the center of the nut, and a nut having a hole larger than the hole provided at a position spaced apart from the hole, and a nut at the center of a washer. A hole having the same size as the hole provided at the center of the nut and a washer having a hole larger than the hole provided at a position spaced apart from the hole, and a semicircular arc is formed on the back surface of the nut. A nut washer, wherein a guide groove is provided, and a boss that engages with the guide groove of the nut is erected on the back surface of the washer to engage the nut and the washer. 3. The nut washer according to claim 2, wherein the surface of said washer is roughened.