CN217355153U

CN217355153U - Anti-drop screw

Info

Publication number: CN217355153U
Application number: CN202220982362.5U
Authority: CN
Inventors: 沈敏军; 池启洪; 张�杰
Original assignee: Zhejiang Baide Precision Hardware Co ltd
Current assignee: Zhejiang Baide Precision Hardware Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-02
Anticipated expiration: 2032-04-25

Abstract

The utility model relates to an anti-drop screw, include: a screw head; a rod body; a threaded segment; the diameter of screw thread section is greater than the diameter of the body of rod, the side of screwhead is outer hexagonal structure, a style of calligraphy mounting groove and rectangular mounting groove have been seted up to the one end that the screwhead deviates from the body of rod, a style of calligraphy mounting groove runs through the both ends of rectangular mounting groove and outwards extends, and the structure of this screwhead is twisted through bare-handed mode location earlier for outer hexagonal is convenient, then further screwing up the screw through a style of calligraphy mounting groove or rectangular mounting groove, and the convenience of use has been promoted in the setting of two kinds of mounting grooves, and the diameter of screw thread section is greater than the diameter realization of the body of rod and prevents the effect that drops.

Description

Anti-drop screw

Technical Field

The utility model relates to a fastener technical field, in particular to anti-drop screw.

Background

With the development of industrialization, the screw is also continuously improved and refined. Some mechanical parts in narrow space need screw connection and can not occupy too much space. In screw connection, the traditional method for preventing the screw from loosening comprises measures of adding a spring washer, injecting thread glue and the like, but has limitations and disadvantages of the traditional method. The use of a spring washer will increase the height of the screw head, which will collide with another part in a small space where planar motion is required. The screw is prevented from loosening by using the thread glue, so that the screw cannot be replaced or is difficult to replace, and the maintenance and the repair of equipment are not facilitated.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an anti-drop screw to solve above-mentioned technical problem.

The technical scheme of the utility model is realized like this: a drop-preventing screw comprising:

a screw head;

a rod body;

a threaded segment;

the diameter of screw thread section is greater than the diameter of the body of rod, the side of screwhead is outer hexagonal structure, a style of calligraphy mounting groove and rectangular mounting groove have been seted up to the one end that the screwhead deviates from the body of rod, a style of calligraphy mounting groove runs through the both ends of rectangular mounting groove and outwards extends.

Through adopting above-mentioned technical scheme, the structure of this screwhead is twisted for outer hexagonal convenience earlier through bare-handed mode location, then screws up the further convenience of use through a style of calligraphy mounting groove or rectangle mounting groove with the screw, and the setting of two kinds of mounting grooves has promoted the convenience of use, and the diameter of screw thread section is greater than the diameter realization of the body of rod and prevents the effect that drops.

The utility model discloses further set up to: the bottom of a straight-shaped mounting groove is provided with an oil hole, and the oil hole extends from the screw head to the thread section, so that the two ends are opened.

Through adopting above-mentioned technical scheme, the practicality has been promoted in setting up of this oilhole, can conveniently carry out the oiling to machinery lubricated, and simple structure is convenient to use.

The utility model discloses further set up to: and a sealing piece is arranged at one end of the oil hole close to the screw head and is in threaded connection with the inner wall of the end part of the oil hole.

Through adopting above-mentioned technical scheme, the setting of this sealing member plays when not needing the oiling, and the shutoff can be carried out to the outside of this oilhole, prevents that outside impurity or dust from getting into and leading to blockking up, plays good sealed effect, and through threaded connection the dismouting of being convenient for.

The utility model discloses further set up to: one end of the sealing element is provided with a first mounting groove, and the sealing element is a metal piece, and a sealing sleeve is arranged on the outer side of the sealing element.

Through adopting above-mentioned technical scheme, this setting up of first mounting groove is convenient to carry out the dismouting through the instrument to the sealing member.

The utility model discloses further set up to: and an anti-rust coating is arranged in the oil hole, and a wear-resistant coating is arranged on the outer side of the anti-rust paint coating.

Through adopting above-mentioned technical scheme, this anti rust coating's setting has promoted rust-resistant effect, and the wear-resisting coating that the anti rust coating outside set up has promoted life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic structural view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

fig. 3 is a top view of the embodiment of the present invention.

Reference numerals: 1. a screw head; 100. a linear mounting groove; 101. a rectangular mounting groove; 2. a rod body; 3. a threaded segment; 4. an oil hole; 5. and a seal member.

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 efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, the utility model discloses an anti-drop screw, include: a screw head; a rod body; a threaded segment; the diameter of screw thread section is greater than the diameter of the body of rod, the side of screwhead is outer hexagonal structure, a style of calligraphy mounting groove and rectangular mounting groove have been seted up to the one end that the screwhead deviates from the body of rod, a style of calligraphy mounting groove runs through the both ends of rectangular mounting groove and outwards extends. The structure of this screwhead is twisted for outer hexagonal convenient earlier through bare-handed mode location, then screws up the screw further through a style of calligraphy mounting groove or rectangle mounting groove, and the convenience of use has been promoted in setting up of two kinds of mounting grooves, and the diameter of screw thread section is greater than the diameter realization of the body of rod and prevents the effect that drops.

The bottom of a straight-shaped mounting groove is provided with an oil hole, and the oil hole extends from the screw head to the thread section, so that the two ends are opened. The practicality has been promoted in setting up of this oilhole, can conveniently carry out the oiling to machinery lubricated, simple structure convenient to use.

And a sealing piece is arranged at one end of the oil hole close to the screw head and is in threaded connection with the inner wall of the end part of the oil hole. The setting of this sealing member plays when not needing the oiling, and the shutoff can be carried out to the outside of this oilhole, prevents that outside impurity or dust from getting into and leading to blockking up, plays good sealed effect, and through the threaded connection dismouting of being convenient for, and this sealing member is T style of calligraphy structure, and this structure can prevent the excessive screw in of sealing member, plays spacing effect.

One end of the sealing element is provided with a first mounting groove, and the sealing element is a metal piece, and a sealing sleeve is arranged on the outer side of the sealing element. The sealing member is conveniently disassembled and assembled through tools by the aid of the first mounting groove.

And an anti-rust coating is arranged in the oil hole, and a wear-resistant coating is arranged on the outer side of the anti-rust paint coating. This anti-rust coating's setting has promoted rust-resistant effect, and the wear-resistant coating that the anti-rust coating outside set up has promoted life.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drop-preventing screw comprising:

a screw head;

a rod body;

a threaded segment;

the method is characterized in that:

2. A drop-preventing screw as defined in claim 1, wherein: the bottom of the straight-line-shaped mounting groove is provided with an oil hole, and the oil hole is extended from the screw head to the thread section, so that the two ends are opened.

3. A drop-preventing screw as defined in claim 2, wherein: and a sealing piece is arranged at one end of the oil hole close to the screw head and is in threaded connection with the inner wall of the end part of the oil hole.

4. A drop-preventing screw as defined in claim 3, wherein: one end of the sealing element is provided with a first mounting groove, and the sealing element is a metal piece, and a sealing sleeve is arranged on the outer side of the sealing element.

5. A drop-preventing screw as defined in claim 2, wherein: and an anti-rust coating is arranged in the oil hole, and a wear-resistant coating is arranged on the outer side of the anti-rust coating.