CN212775113U

CN212775113U - Durable inner hexagonal countersunk head step machine screw

Info

Publication number: CN212775113U
Application number: CN202021460070.2U
Authority: CN
Inventors: 田永军
Original assignee: Guangzhou Fast Screw Fastening Technology Co ltd
Current assignee: Guangzhou Fast Screw Fastening Technology Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-23
Anticipated expiration: 2030-07-22

Abstract

The utility model relates to a screw production technical field specifically is a durable type's interior hexagonal countersunk head bench screw, including the screw body, the screw body includes the screw rod, and the screw rod top even has the step post, and the step capital portion even has the connecting rod, and the connecting rod top even has the nut, and open at the nut top has the hexagonal shrinkage pool, and open hexagonal shrinkage pool bottom has the feed liquor hole, and open the screw rod lateral wall has a plurality of feed liquor grooves, and the feed liquor groove link up with the feed liquor hole mutually, has plated wear-resisting coating on the screw rod lateral wall, and wear-resisting coating surface coating has the antioxidation coating. This hexagonal socket countersunk head step machine screw of durable type prevents through the oxidation barrier that screw rod oxidation corrosion and damage, increases the wear resistance of screw rod simultaneously through wear-resisting cladding material, reduces the wearing and tearing of screw rod round trip friction when the assembly, when carrying out the screw dismouting, through feed liquor hole and feed liquor groove to screw rod lateral wall interpolation lubricating oil, prevent the screw rod and by the internal thread of being connected object or nut card pause between, lead to the external screw thread fish tail to damage.

Description

Durable inner hexagonal countersunk head step machine screw

Technical Field

The utility model relates to a screw production technical field specifically is a hexagonal countersunk head step machine screw in durable type.

Background

The bolt is one of common accessories in mechanical assembly and is mainly used for connecting and fixing two objects or fixing the position of one object, the bolt connection is mainly stressed by connection of an external thread on the bolt and an internal thread on the connected object or a nut, the external thread is weak in structure, and is easy to slip and damage or oxidation corrosion damage during use and short in service life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior hexagonal countersunk head step machine screw of durable type to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a durable type's interior hexagonal countersunk flat head bench machine screw, includes the screw body, the screw body includes the screw rod, screw rod bottom edge has seted up first chamfer structure, screw rod top coaxial coupling has the step post, step capital portion coaxial coupling has the connecting rod, connecting rod top coaxial coupling has the nut, the hexagonal shrinkage pool has been seted up at the nut top, hexagonal shrinkage pool bottom is seted up and is run through to the inside feed liquor hole of screw rod, the even and crisscross feed liquor groove that distributes that just is of a plurality of distributions is seted up to the screw rod lateral wall, the feed liquor groove link up with the feed liquor hole mutually, the wear-resisting coating has been plated on the screw rod lateral wall, wear-resisting coating surface coating has the.

Preferably, the step column and the screw rod are of an integrally formed structure, and second chamfer structures are arranged at the top and the bottom edge of the step column.

Preferably, the connecting rod and the step column are in an integrally formed structure.

Preferably, the nut and the connecting rod are of an integrally formed structure, and a third chamfer structure is arranged at the edge of the top of the nut.

Preferably, the outer side wall of the nut is provided with a plurality of anti-slip grooves distributed in an annular array.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this hexagonal countersunk head step machine screw in durable type has plated wear-resisting coating on the screw rod lateral wall, and wear-resisting coating surface coating has the oxidation barrier, prevents screw rod oxidative corrosion and damage through the oxidation barrier, increases the wear resistance of screw rod through wear-resisting coating simultaneously, reduces the screw rod and makes a round trip frictional wearing and tearing when the assembly, prolongs its life.

2. This hexagonal countersunk head step machine screw in durable type is equipped with the feed liquor hole bottom the nut, and the screw rod lateral wall is opened there is the feed liquor groove, when carrying out the screw dismouting, adds lubricating oil to the screw rod lateral wall through feed liquor hole and feed liquor groove, prevents that the screw rod from with by the internal thread on being connected object or nut between the card pause, and then leads to the external screw thread fish tail to damage.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 3 is a cross-sectional view of the overall structure of the present invention.

In the figure:

1. a screw body; 10. a screw; 100. a first chamfer structure; 11. a step post; 110. a second chamfer structure; 12. a connecting rod; 13. a nut; 130. a hexagonal concave hole; 131. a third chamfer structure; 132. an anti-slip groove; 14. a liquid inlet hole; 15. a liquid inlet tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a durable type's hexagonal socket head countersunk flat head step machine screw, including screw body 1, screw body 1 includes screw rod 10, screw rod 10 top coaxial coupling has

step post

11, 11 top coaxial coupling of step post has connecting rod 12, connecting rod 12 top coaxial coupling has nut 13, hexagonal shrinkage pool 130 has been seted up at nut 13 top, the wear-resisting cladding material has been plated on the screw rod 10 lateral wall, wear-resisting cladding material surface coating has the antioxidation coating, wear-resisting cladding material adopts nickel-chromium alloy cladding material, even electroplating is on screw rod 10 lateral wall, when this machine screw uses, prevent screw rod 10 oxidation corrosion and damage through the antioxidation coating, the wearability through wear-resisting cladding material increase screw rod 10 simultaneously, reduce the wearing and tearing of screw rod 10 round trip friction when the assembly, prolong its life.

In this embodiment, hexagonal shrinkage pool 130 bottom has been seted up and has been run through to the inside feed liquor hole 14 of screw rod 10, the feed liquor groove 15 that a plurality of distributions are even and are the staggered distribution is seted up to screw rod 10 lateral wall, feed liquor groove 15 link up with feed liquor hole 14 mutually, be convenient for when using, add lubricating oil to screw rod 10 lateral wall through feed liquor hole 14 and feed liquor groove 15, prevent that screw rod 10 from being blocked between the internal thread on connected object or the nut and pause, and then lead to the external screw thread fish tail to damage.

In addition, first chamfer structure 100 has been seted up to screw rod 10 bottom edge, plays the guide effect through first chamfer structure 100, is convenient for during the use screw rod 10 gets into the connecting hole of being connected the object.

Further, second chamfer structure 110 has all been seted up at step post 11 top and bottom edge, and third chamfer structure 131 has been seted up at nut 13 top edge, gets rid of the burr at step post 11 edge through second chamfer structure 110, gets rid of the burr at nut 13 edge through third chamfer structure 131, prevents sharp limit fish tail user's hand on step post 11 and the nut 13.

Secondly, the outer side wall of the nut 13 is provided with a plurality of anti-slip grooves 132 distributed in an annular array, so that the friction between the hand of a user and the nut 13 is increased, and the screw of the machine is convenient to take.

Specifically, step post 11 is the integrated into one piece structure with screw rod 10, and connecting rod 12 is the integrated into one piece structure with step post 11, and nut 13 is the integrated into one piece structure with connecting rod 12, and integrated into one piece is convenient for produce, and the product size precision of production department is high, and integrated into one piece stable in structure, can not drop the damage in the use.

When the durable inner hexagonal countersunk head step machine screw is used, a user firstly checks the integrity of the machine screw and whether the connection of each part is firm; then, inserting an inner hexagonal wrench into the hexagonal concave hole 130, aligning the tail end of the bottom of the screw 10 with a connecting hole of an object to be connected, and rotating the inner hexagonal wrench to drive the whole machine screw to rotate, so that the screw 10 enters the connecting hole in a spiral manner to lock the machine screw; in the use process, the screw 10 is prevented from being damaged due to oxidation corrosion by the anti-oxidation layer, and meanwhile, the wear-resisting property of the screw 10 is improved by the wear-resisting coating, so that the back-and-forth friction wear of the screw 10 during assembly is reduced; when the screw needs to be taken out, lubricating oil is firstly injected into the liquid inlet hole 14, flows to the outer side wall of the screw 10 through the liquid inlet hole 14 and the liquid inlet groove 15, the lubricating property between the screw 10 and the internal threads on the connected object or the nut is increased, then the inner hexagonal wrench is inserted into the hexagonal concave hole 130, and then the inner hexagonal wrench is rotated reversely to take down the screw.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hexagonal socket countersunk head step machine screw of durable type, includes screw body (1), its characterized in that: screw body (1) includes screw rod (10), first chamfer structure (100) have been seted up to screw rod (10) bottom edge, screw rod (10) top coaxial coupling has step post (11), step post (11) top coaxial coupling has connecting rod (12), connecting rod (12) top coaxial coupling has nut (13), hexagonal shrinkage pool (130) have been seted up at nut (13) top, hexagonal shrinkage pool (130) bottom is seted up and is run through to inside feed liquor hole (14) of screw rod (10), feed liquor groove (15) that a plurality of distributions are even and are crisscross distribution are seted up to screw rod (10) lateral wall, feed liquor groove (15) link up mutually with feed liquor hole (14), wear-resisting coating has been plated on screw rod (10) lateral wall, and wear-resisting coating surface coating has the antioxidation coating.

2. The durable socket head cap step machine screw of claim 1, wherein: step post (11) and screw rod (10) are integrated into one piece structure, just second chamfer structure (110) have all been seted up to step post (11) top and bottom edge.

3. The durable socket head cap step machine screw of claim 1, wherein: the connecting rod (12) and the step column (11) are of an integrally formed structure.

4. The durable socket head cap step machine screw of claim 1, wherein: nut (13) and connecting rod (12) are integrated into one piece structure, third chamfer structure (131) have been seted up to nut (13) top edge.

5. The durable socket head cap step machine screw of claim 1, wherein: the outer side wall of the nut (13) is provided with a plurality of anti-slip grooves (132) distributed in an annular array.