CN210799644U - Inner dodecagonal flower-shaped cylindrical head screw - Google Patents

Abstract

The utility model discloses an interior twelve angle flower shape cylinder head screw. Belong to fastener structure technical field, the phenomenon that appears easily skidding when this screw can avoid unscrewing, and then improves the practicality, and simple structure, convenient to use. The nut comprises a disc part fixedly connected to the lower end of a cylindrical head; the lower end of the threaded rod is provided with a threaded portion, the threaded portion is provided with anti-slip portions distributed in a net shape, and the bottom end of the threaded portion is provided with a nail head.

Description

Inner dodecagonal flower-shaped cylindrical head screw

Technical Field

The utility model relates to a fastener technical field, concretely relates to interior twelve corners flower shape cylinder head screw.

Background

The screw is the most common fastener, and the application range of the screw is very wide, and the screw mainly comprises a head part and a screw rod, is used for fastening and connecting two parts with through holes, for example, the screw is screwed off, and the two parts can be separated, so the screw belongs to detachable connection.

The utility model discloses a chinese utility model specially does benefit to 2017 year 01 month 11 and discloses an inner hexagonal cylinder head screw like bulletin number CN205876917U, including inner hexagonal cylinder head, interior hexagonal, linkage segment, oil transmission hole and threaded rod, be equipped with inner hexagonal cylinder head on the inner hexagonal cylinder head screw, inner hexagonal cylinder head's central authorities are equipped with the interior hexagonal, inner hexagonal cylinder head lower extreme is equipped with the linkage segment, the linkage segment has the threaded rod, be equipped with the oil transmission hole in inner hexagonal cylinder head screw's the interior hexagonal, the oil transmission hole is connected interior hexagonal and linkage segment and is link up.

The structure and the strength requirement of the screw in the prior art are different according to different use fields, and the screw in the prior art is easy to slip when unscrewed, so that the screw is difficult to unscrew.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve present screw and exist the not enough of easy skidding when unscrewing, provide one kind and can avoid appearing the easy phenomenon of skidding when unscrewing, and then improve the practicality, and simple structure, convenient to use's interior dodecagonal flower cylindric head screw.

The technical problem is solved by the following technical scheme:

an inner dodecagonal flower-shaped cylindrical head screw comprises a threaded rod fixedly connected to the bottom end of a nut, wherein the nut comprises a disc part fixedly connected to the lower end of a cylindrical head; the lower end of the threaded rod is provided with a threaded portion, the threaded portion is provided with anti-slip portions distributed in a net shape, and the bottom end of the threaded portion is provided with a nail head.

Preferably, a plurality of pawls distributed annularly are arranged at the top end of the disc part, and ratchets distributed in a step shape are arranged on the pawls.

Preferably, the number of the pawls is ten.

Preferably, a flower-shaped groove is formed in the cylindrical head, and a conical groove is formed in the bottom of the flower-shaped groove.

Preferably, the flower-shaped groove is shaped like an inner twelve-corner flower.

The utility model discloses can reach following effect:

the utility model provides an interior dodecagonal flower shape cylinder head screw appears the phenomenon of easily skidding when can avoiding the unscrewing, and then improves the practicality, and simple structure, convenient to use.

Drawings

Fig. 1 is a schematic view of an overall structure of an embodiment of the present invention.

Fig. 2 is a plan view of a nut according to an embodiment of the present invention.

Fig. 3 is a plan view of a cylindrical head according to an embodiment of the present invention.

In the figure: the screw cap 1, the threaded rod 2, the cylindrical head 11, the pawl 12, the disc part 13, the threaded part 21, the anti-slip part 22, the nail head 23, the flower-shaped groove 111, the tapered groove 112 and the ratchet 121.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In an embodiment, an inner dodecagonal flower-shaped cylindrical head screw, as shown in fig. 1, comprises a threaded rod 2 fixedly connected to the bottom end of a nut 1, wherein the nut 1 comprises a disk part 13 fixedly connected to the lower end of a cylindrical head 11; the lower end of the threaded rod 2 is provided with a threaded portion 21, the threaded portion 21 is provided with anti-slip portions 22 distributed in a net shape, and the bottom end of the threaded portion 21 is provided with a nail head 23.

Referring to fig. 2, a plurality of pawls 12 are annularly distributed at the top end of the disc portion 13, and the pawls 12 are provided with ratchet teeth 121 distributed in a step shape.

Referring to fig. 3, a flower-shaped groove 111 is formed in the cylindrical head 11, and a tapered groove 112 is formed at the bottom of the flower-shaped groove 111. The flower-shaped groove 111 is shaped like an inner twelve-cornered flower.

The number of the pawls 12 is ten in this embodiment.

The embodiment of the utility model provides an adopt the cylinder head 11 of interior dodecagonal flower shape, through the area of contact of increase with the spanner to appear the phenomenon of easily skidding when reducing the unscrewing, if can't be through the cylinder head 11 of interior dodecagonal flower shape with the screw back-out, accessible and pawl 12 matched with ratchet spanner back-out with the screw, because all be equipped with the ratchet 121 that is the echelonment and distributes on every pawl 12, thereby the phenomenon that easily skids appears when can effectually avoiding the unscrewing, and then improve the practicality of this type of screw.

The utility model provides an interior dodecagonal flower shape cylinder head screw appears the phenomenon of easily skidding when can avoiding the unscrewing, and then improves the practicality, and simple structure, convenient to use, the reliability is high.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make various changes or modifications within the scope of the appended claims.

Claims (4)

1. An inner dodecagonal flower-shaped cylindrical head screw comprises a threaded rod (2) fixedly connected to the bottom end of a screw cap (1), and is characterized in that the screw cap (1) comprises a disc part (13) fixedly connected to the lower end of a cylindrical head (11); the lower end of the threaded rod (2) is provided with a threaded part (21), the threaded part (21) is provided with anti-skid parts (22) distributed in a net shape, and the bottom end of the threaded part (21) is provided with a nail head (23); the top end of the disc part (13) is provided with a plurality of pawls (12) which are distributed annularly, and the pawls (12) are provided with ratchets (121) which are distributed in a step shape.

2. The inner dodecagonal socket cap screw according to claim 1, wherein said number of pawls (12) is ten.

3. The inner dodecagonal flower-shaped cylindrical head screw according to claim 1 or 2, characterized in that a flower-shaped groove (111) is arranged in the cylindrical head (11), and a conical groove (112) is arranged at the bottom of the flower-shaped groove (111).

4. The inner dodecagonal socket cap screw according to claim 3, wherein said flower-shaped groove (111) is shaped as an inner dodecagonal flower.

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