JP3044374U - Drawing nut - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a draw-formed nut that can be firmly bolted and fixed without using a spring washer. SOLUTION: A regular hexagonal cylinder part 1 and a cylindrical part 2 which is inside thereof are concentrically arranged, and a metal is formed so that the base end parts of the regular hexagonal cylinder part 1 and the cylindrical part 2 are connected by a regular hexagonal annular plate part 5. The plate is drawn, the axial length of the cylindrical portion 2 is made shorter than the axial length of the regular hexagonal cylindrical portion 1, and the thread 3 is cut on the inner peripheral surface of the cylindrical portion 2.

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD The present invention relates to a nut used for fixing bolts.

[0002]

2. Description of the Related Art Since a conventional cast nut is molded into a solid regular hexagonal disk shape, when it is fitted into a bolt to tighten an object to be fixed, the nut itself does not flex and deform. Therefore, in order to firmly tighten and prevent the nut from loosening, it is necessary to interpose a spring washer between the object to be fixed and the nut.

However, in the fixing method in which the spring washer must be used together with the nut as described above, the work of fitting the spring washer to the bolt is required, so that the workability of the bolt tightening is deteriorated accordingly. Therefore, the material cost will be increased by the spring washer.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a draw-formed nut that can be firmly bolted and fixed without using a spring washer.

[0005]

Means for Solving the Problems Hereinafter, referring to the reference numerals in the accompanying drawings, a draw-forming nut 12 of the present invention has a regular hexagonal cylinder portion 1 and a cylindrical portion 2 which is inside thereof, which are concentrically arranged. , A regular metal plate is drawn so that the base end portions of the regular hexagonal cylinder portion 1 and the cylindrical portion 2 are connected by the regular hexagonal annular plate portion 5, and the axial length of the cylindrical portion 2 is set to the axis of the regular hexagonal cylinder portion 1. The length is shorter than the length in the direction, and the thread 3 is cut on the inner peripheral surface of the cylindrical portion 2.

There is a cavity 4 between the regular hexagonal cylinder portion 1 and the cylindrical portion 2 which are connected by the regular hexagonal annular plate portion 5, and the tip surface of the regular hexagonal cylinder portion 1 is the tip surface of the cylindrical portion 2. Since it protrudes further, the bolt 10 is inserted through the through hole 7 of the one fixing target 6 and the through hole 9 of the other fixing target 8, and the screw thread 3 of the cylindrical portion 2 is inserted into the screw shaft portion 11 of the bolt 10. When both fixing objects 6 and 8 are bolted and fixed by fitting and hitting the tip cotton of the regular hexagonal tube portion 1 against the fixing object 8, the regular hexagonal annular plate portion 5 and the regular hexagonal portion 5 are fixed according to the tightening force. The prismatic cylindrical portion 1 is flexibly deformed, and the bolt 10 and the nut 12 are strongly attracted to the fixing target objects 6 and 8 by the elastic force.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the embodiment shown in the drawings, the ridge line portion where the regular hexagonal tubular portion 1 and the regular hexagonal annular plate portion 5 intersect is chamfered obliquely, which facilitates fitting with a rotary operation tool such as a wrench. Is formed.

[0008]

As described above, the draw-forming nut 12 of the present invention draws a metal plate so that the regular hexagonal cylinder portion 1 and the cylindrical portion 2 concentrically arranged inside and outside are connected by the regular hexagonal annular plate portion 5. Molded, the axial length of the cylindrical portion 2 is set shorter than that of the regular hexagonal cylindrical portion 1, and the thread 3 is cut on the inner peripheral surface of the cylindrical portion 2, and the regular hexagonal annular plate portion 5 and the regular hexagonal annular portion 5 are formed. Since the rectangular cylinder portion 1 flexes and deforms, it functions as a spring washer, so that firm bolt tightening can be performed without using a separate spring washer.

Further, according to the draw-forming nut of the present invention, since the spring washer is unnecessary, the work of fitting the nut to the bolt is omitted, and the workability of the bolt tightening is improved. The cost of parts is also reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a nut according to an embodiment of the present invention.

FIG. 2 is a rear view of the nut.

FIG. 3 is a left side view of the nut.

FIG. 4 is a bottom view of the nut.

FIG. 5 is a sectional view taken along line AA of FIG. 1;

FIG. 6 is a cross-sectional view showing a usage state of the nut.

[Explanation of symbols]

 1 Regular Hexagonal Cylindrical Part 2 Cylindrical Part 3 Screw Thread 4 Cavity 5 Regular Hexagonal Annular Plate 6 Fixing Target 7 Through Hole 8 Fixing Target 9 Through Hole 10 Bolt 11 Screw Shaft 12 Nut

Claims (1)

[Utility model registration claims] 1. A regular hexagonal cylinder part 1 and a cylindrical part 2 which is inside thereof are concentrically arranged, and the base end parts of the regular hexagonal cylinder part 1 and the cylindrical part 2 are connected by a regular hexagonal annular plate part 5. A draw forming nut in which a metal plate is drawn, the axial length of the cylindrical portion 2 is made shorter than the axial length of the regular hexagonal tubular portion 1, and a thread 3 is cut on the inner peripheral surface of the cylindrical portion 2.