Low-temperature-resistant anti-reversal bottom screw

Abstract

The utility model discloses a low-temperature resistant anti-reversal bottom screw, which relates to the technical field of bottom screws and comprises a main screw body, a fixed cone and an inverted cone, a nut is arranged at the top end of the main screw body, a gasket is arranged below the nut, the fixed cone is connected to the bottom surface of the gasket, external threads are arranged on the surface of the main screw body at equal intervals, and the inverted cone is connected to the bottom surface of the main screw body. And the inverted cone is arranged on the top surface of one side of the external thread. According to the low-temperature-resistant anti-reversal bottom screw, the multiple fixing cones of inclined thorn structures are annularly distributed at the bottom of the gasket, so that after the whole screw is spirally screwed into a mounting structural surface in the vertical direction, the fixing cones are obliquely inserted into the structural surface along with rotation, and therefore the whole screw is structurally fixed; meanwhile, the inverted cone is arranged on the surface of the upper end of the external thread, and the barb structure of the inverted cone is used, so that the situation that the whole screw is loosened and reversed can be prevented to the maximum extent, and the use firmness is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom screws, in particular to a low-temperature resistant and anti-reversal bottom screw. Background Art

[0002] Bottom screws usually refer to screws, which are small metal parts that are often used to fix and connect objects. It has a pointed head at the front end and a large pitch, so it is generally used to fasten wooden and plastic parts. There are many types of screws, which can be divided into machine screws, self-tapping screws, self-drilling screws, wallboard nails, fiberboard nails, wood screws, hexagonal wood screws, non-slip screws, combination screws, miniature screws, furniture screws, electronic screws, etc. Common screws are smaller, with flat heads, cross heads, etc., and external threads on the rod. Screws are generally used on softer or thinner objects. When in use, they use their own threads to rotate and drill forward.

[0003] Conventional screws have a relatively simple structure and a smooth surface. Most of them are made of iron materials, which limits their structural strength. At the same time, they are prone to rigidity decay at low temperatures. At the same time, as the use time increases, the connecting structural parts will loosen or even reverse under their own force, causing the screws connected therein to loosen, and even reverse, causing the stability of the structural connection to loosen.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a low-temperature resistant and anti-reversal bottom screw is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a low temperature resistant anti-reversal bottom screw to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature resistant and anti-reversal bottom screw, comprising a main nail body, a fixed cone and an inverted cone, a nut is arranged at the top of the main nail body, and a gasket is arranged under the nut, the fixed cone is connected to the bottom surface of the gasket, the surface of the main nail body is equidistantly arranged with external threads, and the inverted cone is arranged on the top surface of one side of the external thread.

[0007] Furthermore, the fixed cones are equidistantly distributed on the bottom surface of the gasket with the center of the gasket as the axis, and the tips of the fixed cones are oriented clockwise.

[0008] Furthermore, the tip of the inverted cone is arranged on a side surface of the external thread in a counterclockwise direction, and the inverted cone is arranged in a barb-like structure.

[0009] Furthermore, the overall surface of the external thread is a frosted structure, and a cross groove is provided on the top surface of the nut.

[0010] Furthermore, the gasket is fixed between the main nail body and the nut, and a reinforcement pile is provided between the main nail body and the gasket.

[0011] Furthermore, a nail cone is provided at the bottom end of the main nail body, and the surfaces of the main nail body, nut, gasket, fixing cone, external thread, inverted cone and nail cone are all sprayed with an anti-rust coating.

[0012] Furthermore, the main nail body, nut, gasket, fixed cone, external thread, inverted cone, reinforced pile and nail cone are an integrated structure, and the main nail body, nut, gasket, fixed cone, external thread, inverted cone, reinforced pile and nail cone are all made of stainless steel.

[0013] Furthermore, the main nail body and the nut are arranged in a "T"-shaped structure, and the main nail body, the nut and the nail cone are all on the same vertical central axis.

[0014] The utility model provides a low temperature resistant anti-reversal bottom screw, which has the following beneficial effects:

[0015] 1. The utility model provides a reinforcing pile at the top of the main nail body, so that the connection between the main nail body and the gasket is strengthened, thereby improving the strength of the structural connection. At the same time, a fixing cone is arranged around the bottom of the gasket. When the entire screw is vertically screwed into the structural surface, the entire screw is gradually screwed into the installation structural surface as the inclined circular rotation and friction of the external thread on the surface of the main nail body occur. When the screw is screwed to the end, the fixing cone at the bottom of the gasket is rotated again and obliquely inserted into the installation structural surface, thereby helping the entire screw to improve the structural stability of the installation. In addition, since an inverted cone is provided on the surface of the upper section of the external thread, and the spike structure of the inverted cone itself faces upward and is counterclockwise, by utilizing this structure, after the entire screw is tightened, the inverted cone can be engaged between the external thread and the structural surface, thereby strengthening the tightness of the structural contact and preventing the problem of structural loosening or reversal, thereby improving the firmness of the installation.

[0016] 2. The utility model provides a frosted surface structure on the surface of the external thread, so that the entire screw has sufficient friction during installation to ensure sufficient structural tightness during the installation process. At the same time, the entire main nail body, nut, gasket, fixed cone, external thread, inverted cone, reinforcement pile and nail cone are all made of stainless steel and sprayed with an anti-rust coating, so that the entire screw can be used in a low-temperature environment and can also ensure the overall service life, and prevent rust and weakening of rigidity in a low-temperature environment to the greatest extent. In addition, through the combined use of the nut and the cross slot opened on the top surface, it can be screwed and installed by a flat-head or cross-shaped screwdriver, and when the cross slot is prevented from slipping due to wear, it can be screwed and installed by twisting the nut using tools such as a wrench, thereby ensuring the flexibility of use of the entire screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the main body of a low-temperature resistant and anti-reversal bottom screw of the utility model;

[0018] Figure 2 This is a schematic diagram of a top view structure of a gasket and a fixed cone of a low-temperature resistant anti-reversal bottom screw of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of an anti-rust coating of a low-temperature resistant and anti-reversal bottom screw of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a nut and a cross groove three-dimensional structure of a low-temperature resistant anti-reversal bottom screw.

[0021] In the figure: 1. main nail body; 2. nut; 3. gasket; 4. fixing cone; 5. external thread; 6. inverted cone; 7. frosted surface; 8. cross groove; 9. strengthening pile; 10. nail cone; 11. anti-rust coating. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figures 1 to 4 As shown, a low-temperature resistant anti-reversal bottom screw comprises a main nail body 1, a fixed cone 4 and an inverted cone 6. A nut 2 is arranged at the top of the main nail body 1, and a gasket 3 is arranged below the nut 2. The fixed cone 4 is connected to the bottom surface of the gasket 3. External threads 5 are equidistantly arranged on the surface of the main nail body 1. The inverted cone 6 is arranged on the top surface of one side of the external thread 5. The fixed cone 4 is equidistantly arranged on the bottom surface of the gasket 3 with the center of the gasket 3 as the axis. The tip of the fixed cone 4 is clockwise oriented, and the tip of the inverted cone 6 is counterclockwise oriented and arranged on one side of the external thread 5. The inverted cone 6 is arranged in a barb-like structure. The gasket 3 is fixed to the main nail. A reinforcement pile 9 is provided between the main body 1 and the nut 2, and between the main nail body 1 and the gasket 3. When the entire screw is screwed vertically into the structural surface, with the inclined circular rotation and friction of the external thread 5 on the surface of the main nail body 1, the entire screw is gradually nailed into the installation structural surface. When it is screwed to the end, the fixed cone 4 at the bottom of the gasket 3 is rotated again and obliquely inserted into the installation structural surface, thereby improving the structural stability of the installation. In addition, since the spike structure of the inverted cone 6 itself is facing upward and in a counterclockwise direction, after the entire screw is tightened, the inverted cone 6 can be engaged between the external thread 5 and the structural surface, thereby enhancing the tightness of the structural contact.

[0024] The overall surface of the external thread 5 is a frosted surface 7, a cross groove 8 is provided on the top surface of the nut 2, a nail cone 10 is provided at the bottom end of the main nail body 1, and the surfaces of the main nail body 1, the nut 2, the gasket 3, the fixed cone 4, the external thread 5, the inverted cone 6 and the nail cone 10 are sprayed with an anti-rust coating 11, the main nail body 1, the nut 2, the gasket 3, the fixed cone 4, the external thread 5, the inverted cone 6, the reinforcement pile 9, and the nail cone 10 are an integrated structure, and the main nail body 1, the nut 2, the gasket 3, the fixed cone 4, the external thread 5, the inverted cone 6, the reinforcement pile 9, and the nail cone 10 are all made of stainless steel, and a "T"-shaped structure is formed between the main nail body 1 and the nut 2 The main nail body 1, the nut 2 and the nail cone 10 are all on the same vertical central axis. The frosted surface 7 structure is provided on the surface of the external thread 5, so that the entire screw has sufficient friction during installation. At the same time, the entire main nail body 1, the nut 2, the gasket 3, the fixed cone 4, the external thread 5, the inverted cone 6, the reinforcement pile 9 and the nail cone 10 are all made of stainless steel and sprayed with an anti-rust coating 11, so that the entire screw can be used in a low temperature environment. In addition, through the combined use of the nut 2 and the cross slot 8 opened on the top surface, it can be screwed and installed using a wrench or different screwdrivers and other tools, thereby ensuring the flexibility of use of the entire screw.

[0025] In summary, if Figures 1 to 4 As shown, when using the low-temperature resistant anti-reversal bottom screw, first use the cross slot 8 opened on the surface of the nut 2 and the top of the gas, and according to the assembly needs, you can arbitrarily choose a flat-head screwdriver, a cross screwdriver, a wrench and other tools, respectively insert them into the cross slot 8, or sleeve them on the edge of the nut 2, and put the bottom of the main nail body 1 against the installation position, and screw the nail cone 10, so that the entire bottom screw is screwed into the installation structure surface;

[0026] During the entire process of screwing and installing the bottom screw, the inclined circular rotation and friction of the external thread 5 on the surface of the main nail body 1 are utilized to gradually drive the entire screw into the installation structural surface. When the entire main nail body 1 gradually penetrates into the structural surface, the fixed cone 4 at the bottom of the gasket 3 will rotate during the rotation process. The fixed cone 4 will rotate and obliquely insert into the installation structural surface to strengthen the fixation. At the same time, after the entire screw is tightened, the external thread 5 with a frosted surface 7 on the surface, together with the inverted cone 6 provided on its upper surface, can be engaged between the external thread 5 and the structural surface, thereby strengthening the tightness of the structural contact. Under the action of the anti-rust coating 11, the entire bottom screw can be used in a low temperature environment, and the overall service life can be guaranteed.

[0027] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A low temperature resistant anti-reversal bottom screw, comprising a main screw body (1), a fixed cone (4) and an inverted cone (6), characterized in that: A nut (2) is arranged at the top end of the main nail body (1), and a gasket (3) is arranged below the nut (2); the fixing cone (4) is connected to the bottom surface of the gasket (3); external threads (5) are arranged at equal intervals on the surface of the main nail body (1); and the inverted cone (6) is arranged on the top surface of one side of the external threads (5).

2. The low temperature resistant anti-reversal bottom screw according to claim 1, characterized in that: The fixed cones (4) are equidistantly distributed on the bottom surface of the gasket (3) with the center of the gasket (3) as the axis, and the tip of the fixed cones (4) is oriented clockwise.

3. The low temperature resistant anti-reversal bottom screw according to claim 1, characterized in that: The tip of the inverted cone (6) is arranged on a side surface of the external thread (5) in a counterclockwise direction, and the inverted cone (6) is arranged in a barb-like structure.

4. The low temperature resistant anti-reversal bottom screw according to claim 1, characterized in that: The entire surface of the external thread (5) is in the form of a frosted surface (7), and a cross groove (8) is provided on the top surface of the nut (2).

5. The low temperature resistant anti-reversal bottom screw according to claim 1, characterized in that: The gasket (3) is fixed between the main nail body (1) and the nut (2), and a reinforcement pile (9) is provided between the main nail body (1) and the gasket (3).

6. The low temperature resistant anti-reversal bottom screw according to claim 1, characterized in that: A nail cone (10) is provided at the bottom end of the main nail body (1), and the surfaces of the main nail body (1), the nut (2), the washer (3), the fixing cone (4), the external thread (5), the inverted cone (6) and the nail cone (10) are all sprayed with an anti-rust coating (11).

7. The low temperature resistant anti-reversal bottom screw according to claim 5, characterized in that: The main nail body (1), nut (2), gasket (3), fixed cone (4), external thread (5), inverted cone (6), reinforced pile (9) and nail cone (10) are an integrated structure, and the main nail body (1), nut (2), gasket (3), fixed cone (4), external thread (5), inverted cone (6), reinforced pile (9) and nail cone (10) are all made of stainless steel.

8. The low temperature resistant anti-reversal bottom screw according to claim 6, characterized in that: The main nail body (1) and the nut (2) are arranged in a T-shaped structure, and the main nail body (1), the nut (2) and the nail cone (10) all have the same vertical central axis.

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