KR200272838Y1 - bolt and nut having round head surface - Google Patents

Abstract

The present invention facilitates the manufacture of bolts and nuts by making the heads of bolts and nuts used as parts connecting means of various machinery and transportation means easy, and facilitates the fastening or loosening of bolts and nuts, By greatly reducing the air resistance received while attached to a mechanical device or a vehicle, the mechanical performance of a vehicle or a steel structure in which bolts and nuts are installed can be expected to be improved. In constituting the bolt (A) and nut (B) assembly, the outer circumferential surface of the head (11) of the body (1) constituting the bolt (A) and the outer circumferential surface of the nut (B) are each formed in a circular shape. A bolt and nut assembly having a circular head, characterized in that.

Description

Bolt and nut having round head surface

The present invention relates to a bolt and nut assembly having a circular head, and more particularly, by easily forming the head of the bolt and nut used as a component connecting means of various machinery and transportation means to facilitate the manufacture of bolts and nuts In addition, the bolt and nut can be easily tightened or loosened, and the air resistance received while being attached to various machinery or transportation means can be greatly reduced, thereby improving the mechanical performance of the transportation means or steel structure in which the bolt and nut are installed. It is to be expected.

In general, bolts and nuts that are widely used for the connection of parts and materials except welding, such as the coupling between parts including transportation devices such as automobiles and aircraft, various machinery, or the connection between parts and materials, or the combination of steel structures To facilitate the transfer of force for tightening or loosening, the heads of the bolts and nuts that are tightening parts are composed of polygons such as hexagons or octagons. Conventional bolts and nuts having heads of these polygons have polygonal heads. In addition to the manufacturing hassles involved in forming, the head acting as a fastener is polygonal, which requires a minimum amount of tightening (or relaxation) space for the spanner to rotate at an angle, as well as tightening and loosening bolts and nuts. In the process, the spanner is removed from the head of the bolt and nut. After the spanner was rotated by a certain angle in the state, the opening part (tightening part) of the tip was inserted into the head of the bolt and nut so as to be sandwiched.

In addition, the above-mentioned conventional bolt and nut having a polygonal head is exposed to the outside when the head is attached as a connecting means, because the head is made of a polygon rather than streamlined, the air resistance to the bolt and nut is increased Not only does it cause noise, but it also acts as a cause of excessive fuel consumption.

Accordingly, an object of the present invention is to manufacture bolts and nuts by forming a circular head instead of a polygon to solve the problems of the conventional bolt and nut assembly having a polygonal head as described above. In addition, it is easy and convenient to use, and at the same time, it greatly reduces the air resistance received by bolts and nuts, and thus provides a bolt and nut assembly with a circular head which can significantly reduce fuel consumption in case of various noise generation and transportation methods. Is in.

1 is a perspective view of the present invention.

Figure 2 is a state of use of the present invention.

Explanation of symbols on the main parts of the drawings

A: Bolt B: Nut

1: body 2: spanner

11: head 12: male thread

21: Fasteners

In order to achieve the above object, the bolt and nut assembly having a circular head according to the present invention, the bolt (A) and nut (B) assembly for the combination of various mechanical parts, etc., the bolt (A) The outer circumferential surface of the head 11 and the outer circumferential surface of the nut (B) of the body (1) to form a, characterized in that each formed in a circular shape.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

1 is a perspective view showing the configuration of the bolt and nut assembly having a circular head according to the present invention, Figure 2 is a tightening (relaxed) state using a tool of the bolt and nut assembly having a circular head according to the present invention The flat sectional drawing shown shows the structure of the outer peripheral surface of the head part 11 of the bolt A which becomes the body 1 in which the external thread part 12 was formed, and the nut B fastened to this external thread part 12. As shown in FIG. The outer circumferential surface of each has a circular shape to facilitate the manufacture and use of the bolt (A) and nut (B).

Of the bolt (A) and nut (B) assembly having a circular head of the present invention as described above will be described by taking the bolt (A) as an example.

Head for cutting the rotational force with respect to the body 1 having a predetermined length of the male screw portion 12 for the actual coupling of various parts or materials on one side, so that the coupling force between the substantially practical parts by the male screw portion 12 is acting. The part 11 is formed to be integral with the male screw part 12, but the outer circumferential surface of the head part 11 is configured to be circular, i.e., cylindrical, rather than conventional polygons.

Thus, the bolt (A) constituting the bolt (A) and nut (B) assembly having a circular head of the present invention, in the tightening portion 21 of the separate spanner (2) configured to enable the rotation of the circular head It is tightened or relaxed while being easily rotated in a desired direction by repeated forward and reverse rotation of the spanner 2 which allows rotational force to be transmitted in one direction while the circular head 11 is fitted. Combination between the various materials can be made very easily.

As such, when coupling between various parts, materials, or steel structures is made using the bolt A having the circular head of the present invention, the head 11 of the bolt A exposed to the outside is circular. Due to the beautiful appearance of the bolt (A) seen from the outside as well as the reduction of air resistance significantly reduces noise generation, and also improves the operating performance, and when applied to a vehicle or vehicle, such as fuel saving It is also possible.

In the above configuration, the present invention has been described for the use of the bolt as an example, but because the outer peripheral surface of the nut (B) fastened to the bolt (A) of the present invention is also formed in a circular rather than polygonal bolt (A) Likewise, the nut (B) can be easily tightened and relaxed as the spanner (2), as well as to improve the general performance according to the installation of other bolts and nut assemblies.

As described above, although the present invention has been described with reference to the above embodiments, it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

As apparent from the above description, according to the bolt and nut assembly having a circular head of the present invention, the bolt and nut heads used for joining various parts or materials or joining steel structures are formed by using a circular shape instead of a polygon. Not only can the manufacture and use of the nut be easy and simple, but also the air noise is reduced when the head of the bolt and nut is exposed to the outside, thus reducing the operating noise. It also provides useful effects such as reducing fuel consumption.

Claims (1)

In constructing the bolt (A) and nut (B) assembly for the combination of various mechanical parts, Bolt and nut assembly having a circular head, characterized in that the outer peripheral surface of the head (11) and the outer peripheral surface of the nut (B) of the body (1) forming a bolt (A), respectively.