Screw bolt with long service life

Abstract

The utility model belongs to the technical field of screw bolts, particularly relates to a screw bolt with long service life, and provides the following scheme aiming at the protection problem: the screw bolt comprises a bolt head; the lower surface of the bolt head is fixedly connected with a screw rod; a gasket is movably mounted on the outer surface of the screw rod; the upper surface of the bolt head is fixedly connected with a magnet; a protective cover is installed on the outer surface of the bolt head in a sliding mode. And a ventilation mechanism is arranged on the inner surface of the screw rod. And through the arrangement of the ventilation structure, the screw rod can be effectively prevented from being corroded, and the service life of the spiral bolt is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral bolts, in particular to a spiral bolt with a long service life. Background Art

[0002] Screw bolt: A mechanical part, a cylindrical threaded fastener equipped with a nut. It is a type of fastener consisting of a head and a screw. It needs to be matched with a nut and is used to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the screw bolt, the two parts can be separated. Therefore, the bolt connection is a detachable connection.

[0003] However, the prior art still has some shortcomings. In the prior art, there is a lack of protection for the screw bolt. The existing protection is just to paint a layer of paint on the outer surface of the bolt head, which cannot protect the screw. After a long time, the surface of the screw will be corroded by water vapor, especially the screw bolt in the gas stove. The air is humid, which makes it impossible to remove it, and also reduces the service life.

[0004] Therefore we propose a spiral bolt with long service life to solve this problem. Summary of the invention

[0005] The purpose of the utility model is to solve the problems raised in the above background technology and to provide a spiral bolt with a long service life.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A spiral bolt with a long service life comprises a bolt head; a screw rod is fixedly connected to the lower surface of the bolt head; a gasket is movably mounted on the outer surface of the screw rod; a magnet is fixedly connected to the upper surface of the bolt head; a shield is slidably mounted on the outer surface of the bolt head; and a ventilation mechanism is arranged on the inner surface of the screw rod.

[0008] Preferably, an inner groove is provided on the upper surface of the bolt head; and a connecting hole is provided on the inner bottom surface of the inner groove.

[0009] Preferably, the ventilation mechanism comprises a ventilation groove arranged on the upper surface of the screw; a No. 1 ventilation hole is arranged on the upper side of the inner surface of the ventilation groove; and a No. 2 ventilation hole is arranged on the lower side of the inner surface of the ventilation groove.

[0010] Preferably, the diameter of the No. 1 ventilation hole is larger than the diameter of the No. 2 ventilation hole; and the ventilation groove is located directly below the connecting hole.

[0011] Preferably, the shield comprises a plastic cover slidably mounted on the outer surface of the bolt head; an iron sheet is fixedly connected to the inner top surface of the plastic cover; and the plastic cover is fixedly connected to the outer surface of the bolt head through the cooperation between the iron sheet and the magnet.

[0012] In the utility model, the spiral bolt with long service life is provided with the bolt head, the inner groove, the connecting hole, the screw rod, the ventilation groove, the first ventilation hole, the second ventilation hole and the gasket. After the screw rod is fixed, the lubricating oil can be injected into the ventilation groove through the connecting hole, the lubricating oil will enter the ventilation groove, and then the lubricating oil will flow out through the first ventilation hole and the second ventilation hole to lubricate the screw rod. The lubricating oil can also protect the surface of the screw rod to prevent water vapor corrosion, thereby extending the service life of the spiral bolt; if the surface corrosion of the screw rod is serious, the lubricating oil can also be injected into the ventilation groove through the connecting hole, so that the lubricating oil can lubricate the surface of the screw rod for easy disassembly; if the outer surface of the bolt head is seriously corroded, the screw can be disassembled through the inner groove on the bolt head, which provides more disassembly methods and improves practicality;

[0013] In the utility model, the spiral bolt with a long service life is provided with a magnet, a plastic cover and an iron sheet. The plastic cover can be fixed to the outer surface of the bolt head by adsorbing the iron sheet by the magnet, thereby protecting the bolt head and preventing the bolt head from being corroded, which makes it impossible to remove the screw rod.

[0014] The utility model has reasonable structural design, simple operation and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a spiral bolt with a long service life proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of a spiral bolt with a long service life proposed by the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the protective cover in the utility model.

[0018] In the figure: 1. bolt head; 11. inner groove; 12. connecting hole; 2. screw; 21. ventilation groove; 22. No. 1 ventilation hole; 23. No. 2 ventilation hole; 3. gasket; 4. magnet; 5. protective cover; 51. plastic cover; 52. iron sheet. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3A screw bolt with a long service life comprises a bolt head 1; a screw rod 2 is fixedly connected to the lower surface of the bolt head 1; a gasket 3 is movably installed on the outer surface of the screw rod 2; a magnet 4 is fixedly connected to the upper surface of the bolt head 1; a shield 5 is slidably installed on the outer surface of the bolt head 1; and a ventilation mechanism is provided on the inner surface of the screw rod 2.

[0021] Furthermore, an inner groove 11 is provided on the upper surface of the bolt head 1 ; a connecting hole 12 is provided on the inner bottom surface of the inner groove 11 .

[0022] Furthermore, the ventilation mechanism includes a ventilation groove 21 arranged on the upper surface of the screw 2; a first ventilation hole 22 is arranged on the upper side of the inner surface of the ventilation groove 21; and a second ventilation hole 23 is arranged on the lower side of the inner surface of the ventilation groove 21.

[0023] Furthermore, the diameter of the first ventilation hole 22 is greater than the diameter of the second ventilation hole 23 ; the ventilation groove 21 is located directly below the connecting hole 12 .

[0024] Furthermore, the shield 5 includes a plastic cover 51 slidably mounted on the outer surface of the bolt head 1 ; an iron sheet 52 is fixedly connected to the inner top surface of the plastic cover 51 ; the plastic cover 51 is fixedly connected to the outer surface of the bolt head 1 through the cooperation between the iron sheet 52 and the magnet 4 .

[0025] In the utility model, when in use, after the screw 2 is fixed, lubricating oil can be injected into the ventilation groove 21 through the connecting hole 12, the lubricating oil will enter the ventilation groove 21, and then the lubricating oil will flow out through the No. 1 ventilation hole 22 and the No. 2 ventilation hole 23 to lubricate the screw 2. The lubricating oil can also protect the surface of the screw 2 to prevent water vapor corrosion, thereby extending the service life of the spiral bolt; if the surface corrosion of the screw 2 is serious, lubricating oil can also be injected into the ventilation groove 21 through the connecting hole 12, so that the lubricating oil lubricates the surface of the screw 2 for easy disassembly; if the outer surface of the bolt head 1 is seriously corroded, the screw 2 can be disassembled through the inner groove 11 on the bolt head 1, which provides more disassembly methods and improves practicality; the plastic cover 51 can be fixed to the outer surface of the bolt head 1 by the adsorption of the iron sheet 52 by the magnet 4, thereby protecting the bolt head 1 to prevent the bolt head 1 from being corroded, thereby making it impossible to remove the screw 2.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A screw bolt with a long service life, characterized in that: The invention comprises a bolt head (1); a screw rod (2) is fixedly connected to the lower surface of the bolt head (1); a gasket (3) is movably mounted on the outer surface of the screw rod (2); a magnet (4) is fixedly connected to the upper surface of the bolt head (1); a shield (5) is slidably mounted on the outer surface of the bolt head (1); and a ventilation mechanism is provided on the inner surface of the screw rod (2).

2. A screw bolt with a long service life according to claim 1, characterized in that: An inner groove (11) is provided on the upper surface of the bolt head (1); and a connecting hole (12) is provided on the inner bottom surface of the inner groove (11).

3. A screw bolt with a long service life according to claim 1, characterized in that: The ventilation mechanism comprises a ventilation groove (21) arranged on the upper surface of the screw (2); a first ventilation hole (22) is arranged on the upper side of the inner surface of the ventilation groove (21); and a second ventilation hole (23) is arranged on the lower side of the inner surface of the ventilation groove (21).

4. A spiral bolt with a long service life according to claim 3, characterized in that: The diameter of the first ventilation hole (22) is greater than the diameter of the second ventilation hole (23); and the ventilation groove (21) is located directly below the connecting hole (12).

5. A screw bolt with a long service life according to claim 1, characterized in that: The protective cover (5) comprises a plastic cover (51) slidably mounted on the outer surface of the bolt head (1); an iron sheet (52) is fixedly connected to the inner top surface of the plastic cover (51); and the plastic cover (51) is fixedly connected to the outer surface of the bolt head (1) through the cooperation between the iron sheet (52) and the magnet (4).

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