CN206035993U - Round head square -neck bolt and nut - Google Patents

Abstract

The utility model discloses a round head square -neck bolt and nut, including spiral shell head, square section, circular section, screw thread section, nut and fender ring, the lower part of spiral shell head is connected with the upper end of square section, the lower extreme of square section is connected with the upper end of circular section, the lower extreme of circular section is connected with the upper end of screw thread section, threaded connection has the nut in the screw thread section, the outside that the nut is close to one side of spiral shell head is equipped with and keeps off the ring, compares with prior art, and the convenience that can the lift bolt uses has reduced the dependence of bolt to spanner or screwdriver, has strengthened the joint strength of bolt with the article, and convenient to use does benefit to popularization and application.

Description

A round head square neck bolt and nut

【Technical field】

The utility model relates to the technical field of bolts, in particular to a round head square neck bolt and a nut.

【Background technique】

A bolt is a mechanical part, a cylindrical threaded fastener with a nut. A type of fastener consisting of a head and a screw with a cylindrical body with external threads, which needs to be matched with a nut to fasten and connect two parts with through holes. This connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. There are many names for the bolt, and everyone's name may be different. Some people call it a screw, and some call it a bolt. Bolt nail, someone is called fastener. Although there are so many names, the meaning is the same, they are all bolts. A bolt is a general term for a fastener. Bolt is the physical and mathematical principle of using the oblique circular rotation and friction of the object to tighten the device parts step by step. Due to its simple structure, the existing bolts often need to fix the screw head with a wrench or a screwdriver when in use, and then clamp the nut with a wrench to facilitate operation, which is troublesome. Small, it is easy to cause the nut to sink into objects more easily, resulting in a firm connection.

【Content of utility model】

The purpose of this utility model is to solve the problems in the prior art, and propose a round head square neck bolt and nut, which can improve the convenience of using the bolt, reduce the dependence of the bolt on the wrench or screwdriver, and enhance the connection between the bolt and the object. The connection strength is high, the use is convenient, and it is beneficial to popularize and apply.

In order to achieve the above object, the utility model proposes a round head square neck bolt and nut, comprising a screw head, a square section, a circular section, a thread section, a nut and a retaining ring, the bottom of the screw head and the upper end of the square section connected, the lower end of the square section is connected with the upper end of the circular section, the lower end of the circular section is connected with the upper end of the threaded section, the threaded section is threaded with a nut, and the nut is close to the screw head A retaining ring is provided on the outside of one side.

Preferably, the screw head is designed in a cylindrical shape, the screw head, the square segment, the circular segment and the threaded segment are designed in one piece, and the central axes of the screw head, the square segment, the circular segment and the threaded segment are in a line in a straight line.

Preferably, the square segment is designed in a cuboid shape and its cross section is a square, the circular segment and the threaded segment are designed in a cylindrical shape, the diameter of the circular segment is the same as that of the threaded segment, and the circular segment is designed in a cylindrical shape. The diameter of the segment is slightly smaller than the width of the cross-section of the square segment.

Preferably, the retaining ring and the nut are integrally designed, and the diameter of the retaining ring is greater than the width of the cross-section of the square segment.

Beneficial effects of the utility model: the utility model connects a square section at the bottom of the screw head, a circular section is connected at the lower end of the square section, a threaded section is connected at the lower end of the circular section, and a threaded section is threaded on the threaded section. For the nut, there is a retaining ring on the outside of the nut near the end of the screw head. After optimization through experiments, the square section and the square hole of the object can be easily installed. The retaining ring can increase the force-bearing area between the nut and the object and enhance the connection strength of the bolt. , compared with the prior art, it can improve the convenience of using the bolt, reduce the dependence of the bolt on a wrench or a screwdriver, enhance the connection strength between the bolt and the object, be convenient to use, and be beneficial to popularization and application.

The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is a schematic structural view of a round head square neck bolt and a nut of the present invention.

In the figure: 1-screw head, 2-square section, 3-round section, 4-thread section, 5-nut, 6-stop ring.

【detailed description】

Referring to Fig. 1, a kind of round head square neck bolt and nut of the present utility model comprises screw head 1, square segment 2, circular segment 3, threaded segment 4, nut 5 and retaining ring 6, the bottom of described screw head 1 and The upper end of the square section 2 is connected, the lower end of the square section 2 is connected with the upper end of the circular section 3, the lower end of the circular section 3 is connected with the upper end of the threaded section 4, and the threaded section 4 is threaded. Nut 5 is arranged, and described nut 5 is provided with retaining ring 6 near the outside of one side of screw head 1, and described screw head 1 is cylindrical design, and described screw head 1, square segment 2, circular segment 3 and threaded segment 4. Integral design, the central axes of the screw head 1, the square section 2, the circular section 3 and the threaded section 4 are on a straight line, the square section 2 is designed in a cuboid shape and its cross section is a square, the Circular section 3 and threaded section 4 are all cylindrical designs, and the diameter of described circular section 3 is identical with the diameter of threaded section 4, and the diameter of described circular section 3 is slightly smaller than the width of the cross section of square section 2, so The stop ring 6 and the nut 5 are integrally designed, and the diameter of the stop ring 6 is larger than the width of the cross section of the square segment 2 .

The working process of the utility model:

In the working process of a round head square neck bolt and nut of the utility model, a square segment 2 is connected to the lower part of the screw head 1, a circular segment 3 is connected to the lower end of the square segment 2, and a circular segment 3 is connected to the lower end of the circular segment 3. A threaded section 4 is connected, and a nut 5 is threaded on the threaded section 4. A stop ring 6 is provided outside the nut 5 near the end of the screw head 1. Through experimental optimization, the square section 2 can be easily installed by matching with the square hole of the object. , the retaining ring 6 can increase the force-bearing area between the nut and the object, and enhance the connection strength of the bolt. Compared with the prior art, it can improve the convenience of using the bolt, reduce the dependence of the bolt on a wrench or a screwdriver, and enhance the strength of the bolt. The connection strength with the object is convenient to use, which is beneficial to popularization and application.

The above-mentioned embodiment is an illustration of the utility model, not a limitation of the utility model, and any scheme after a simple transformation of the utility model belongs to the protection scope of the utility model.

Claims (4)

1. a round head square neck bolt and nut, characterized in that: comprise screw head (1), square section (2), circular section (3), threaded section (4), nut (5) and retaining ring ( 6), the bottom of the screw head (1) is connected to the upper end of the square segment (2), the lower end of the square segment (2) is connected to the upper end of the circular segment (3), and the circular segment ( 3) The lower end is connected with the upper end of the threaded section (4), the threaded section (4) is threaded with a nut (5), and the outside of the nut (5) near the side of the screw head (1) is provided with retaining ring (6). 2. A round head square neck bolt and nut as claimed in claim 1, characterized in that: said screw head (1) is designed in a cylindrical shape, said screw head (1), square section (2), round The shaped section (3) and the threaded section (4) are integrally designed, and the central axes of the screw head (1), the square section (2), the circular section (3) and the threaded section (4) are on a straight line. 3. A kind of round head square neck bolt and nut as claimed in claim 1, characterized in that: the square section (2) is cuboid designed and its cross-section is a square, the circular section (3) and The threaded segments (4) are designed in a cylindrical shape, the diameter of the circular segment (3) is the same as the diameter of the threaded segment (4), and the diameter of the circular segment (3) is slightly smaller than the transverse diameter of the square segment (2). The width of the section. 4. A round head square neck bolt and nut according to any one of claims 1 to 3, characterized in that: the retaining ring (6) and the nut (5) are integrally designed, and the retaining ring The diameter of (6) is greater than the width of the cross-section of the square segment (2).