CN106151214A - A kind of bolt with hexagonal indentations threaded end - Google Patents

Abstract

This invention discloses a bolt with a hexagonal grooved threaded end, comprising a bolt head, a threaded shank connected to the bolt head, and a nut that mates with the threaded shank. The outer surface of the end of the threaded shank is fitted with a threaded end that mates with it. The threaded end is used to fix the threaded shank when the bolt is tightened, and the threaded end has a hexagonal groove. This bolt, with its hexagonal grooved end for fixing the threaded shank, avoids the drawback of traditional bolts requiring fixing at one end and tightening at the other. The connection can be secured at one end of the bolt, saving time and effort, reducing labor intensity, improving production and work efficiency, and ensuring a secure connection between the components. It is convenient, practical, and applicable to various situations, and deserves widespread promotion.

Description

A bolt with a hexagonally grooved threaded end

technical field

The invention relates to a bolt, in particular to a bolt with a hexagonal groove threaded end.

Background technique

Bolts are widely used mechanical parts, including bolt heads and threaded rods, which need to be matched with nuts 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. Bolt heads include hexagonal head, round head, square head, countersunk head, etc., among which hexagonal head is the most commonly used. Generally, the countersunk head is used where the surface is required to be smooth without protrusions after connection, because the countersunk head can be screwed into the part; the round head can also be screwed into the part, and the tightening force of the square head can be larger, but the size is large.

The structure of the existing bolt assembly is generally shown in Figure 2, including a bolt head, a cylindrical threaded rod with external threads arranged on the bolt head, and a nut that cooperates with the threaded rod. Such a bolt structure has the following Defect: During the bolt tightening process, due to the force, the nut and the bolt head inevitably slip or the threaded rod shakes, so that the bolt head needs to be fixed with the aid of an auxiliary tool, and then the nut is tightened with the aid of an auxiliary tool, or it is necessary to use an auxiliary tool to tighten the nut. The nut is fixed by the auxiliary tool, and then the bolt head is tightened by the tool to realize the fastening of the bolt. That is to say, to realize the fastening of the bolt, one end of the bolt needs to be fixed and the other end should be tightened at the same time. If the connected parts have a large area and a thick thickness, that is, when the length of the threaded rod is long, two people need to work at the same time, which is time-consuming, laborious and laborious. High strength, especially in factories that require bolts to assemble parts in mass production, not only the production efficiency is low, but also the cost of human resources is high; if the bolts are placed in the through holes of the connecting parts, due to the limitation of space or the structure of the connecting parts, the bolt head may It is impossible or difficult to put in the tool, which affects the fastening of the bolts, which in turn affects the orderly progress of the work.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a bolt with a hexagonal grooved threaded end. The bolt is provided with a hexagonal grooved end that can fix the threaded rod, and the bolt can be realized at one end of the threaded rod. The fastening saves time and labor, is conducive to improving production and work efficiency, is convenient and practical, and is suitable for many occasions.

In order to achieve the above object, the technical scheme that the present invention takes:

A bolt with a hexagonal grooved threaded end, comprising a bolt head, a threaded rod connected to the bolt head, and a nut mated with the threaded rod, the outer surface of the end of the threaded rod is covered with a The threaded end is used to fix the threaded rod when the bolt is tightened, and the threaded end is provided with a groove in a hexagonal structure.

As an optimal technical solution, in order to expand the contact area between the connecting part and the nut, facilitate the contact tightening of the connecting part, ensure the firm connection between the bolt and the nut, and effectively prevent the loosening between the connecting parts, the threaded rod is sleeved There is a fastening seal connected with the nut, and the fastening seal is a spring washer or a flat washer assembly.

Compared with the prior art, the present invention has the beneficial effects:

1. The threaded rod is provided with a hexagonal grooved threaded end for fixing it, avoiding the drawbacks of traditional bolt fastening that requires one end to be fixed and the other end to be tightened, and the fastening of the connecting parts can be realized at one end of the bolt, saving time It saves labor and reduces labor intensity, which is conducive to improving production efficiency and work efficiency. It is convenient and practical, and can be applied to various occasions.

2. Set the fastening seal of the spring washer or flat washer assembly to expand the contact area between the connecting part and the nut, which is conducive to the contact and tightening of the connecting part, and at the same time ensure the firm connection between the bolt and the nut, effectively preventing the connection part looseness between.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of existing bolts;

Reference numerals: 1, bolt head, 2, threaded rod, 3, nut, 4, threaded end, 4-1, groove, 5, fastening seal.

detailed description

Propose a kind of specific embodiment of the present invention as shown in Figure 1, a kind of bolt with hexagonal groove threaded end, comprises bolt head 1, is connected with bolt head 1 and has external thread and is the screw thread of cylindrical structure Rod 2, the nut 3 that is connected with the threaded rod 2, the bolt head 1 can be set as a hexagonal head, a round head, a square head, or a countersunk head. It can be reasonably set according to different needs. The outer surface of the end of the threaded rod 2 is covered with a threaded end 4 that is connected with it. The threaded end 4 is used to fix the threaded rod 2 when the bolt is tightened, and the threaded end The head 4 is provided with a groove 4-1 in a hexagonal structure.

The threaded rod 2 is sleeved with a fastening seal 5 connected to the nut 3, the fastening seal 5 is a spring washer or a flat washer assembly, and the fastening seal 5 can expand the connection between the connecting part and the nut 3. The contact area is conducive to the contact and tightening of the connecting parts, and at the same time ensures the firm connection between the threaded rod 2 and the nut 3, effectively preventing the loosening of the connecting parts.

When the present invention is in use: insert the threaded rod 2 into the through holes of two or more parts to be connected, after determining the position of the bolt head 1, set the fastening seal 5, the nut 3, and the threaded end 4 on the threads in sequence. On the rod 2, put an inner hexagonal tool such as an inner hexagonal wrench into the hexagonal groove 4-1 to fix the threaded end 4, and then fix the threaded rod 2, and then tighten the nut 3 through the open or ring wrench Fixing on the threaded rod 2 can realize the fastening between the connecting parts.

Of course, the above is only a detailed description of the preferred specific embodiments of the present invention in conjunction with the accompanying drawings, and is not intended to limit the scope of the present invention. All equivalent changes made according to the principle, structure and structure of the present invention should be covered by this within the scope of protection of the invention.

Claims (2)

1. with a bolt for hexagonal indentations threaded end, the threaded rod being connected with bolt head (1) including bolt head (1) And the nut (3) that is connected of threaded rod (2) (2), it is characterised in that: the end outer surface of described threaded rod (2) be arranged with Its threaded end being connected (4), described threaded end (4) is used for fixing on threaded rod (2), and described threaded end (4) Offer the groove (4-1) of hexagonal structure.

A kind of bolt with hexagonal indentations threaded end the most according to claim 1, it is characterised in that: described screw thread Being arranged with the fit sealing part (5) being connected with nut (3) on bar (2), described fit sealing part (5) is spring shim or plain cushion group Component.