Anti-loosening dry wall nail structure

Abstract

The utility model discloses an anti-loosening dry wall nail structure. The anti-loosening dry wall nail structure comprises a nail body, the overall diameter of the nail body is 4.2 mm, the length of the nail body is 38 mm, a tail end part is integrally formed at the top of the nail body, an inclined transition slope is arranged between the tail end part and the nail body, a drill bit part is integrally formed at the bottom of the nail body, two symmetrically arranged chip grooves are formed in the side wall of the drill bit part, and a cutting edge is arranged on one side of each chip groove; an external thread part is integrally formed on the side wall of the nail body, meanwhile, a rhombic groove is vertically formed in the nail body, and the minimum distance between the rhombic groove and the side wall of the nail body ranges from 0.80 mm to 1.20 mm; when the nail is used, the nail body can generate torsional deformation at the thinnest part of the rhombic groove, so that the nail body is prevented from loosening after being tightened.

Description

Technical Field

[0001] The utility model relates to the field of hardware, in particular to an anti-loosening dry wall nail structure. Background Art

[0002] Drywall screws are a type of nails. Its name is directly translated from the English word Drywall Screw. The biggest feature in appearance is the trumpet head shape. It is divided into double-line fine-thread drywall screws and single-line coarse-thread drywall screws. The biggest difference between the two is that the former has a double thread.

[0003] For example, a patent with authorization announcement number CN220101759U discloses a drywall screw, including a screw body, a tail end thread, a head end thread and a screw head; a set spacing is provided between the tail end thread and the head end thread; the thread outer diameter of the head end thread is larger than the thread outer diameter of the tail end thread; at least one incision is provided on each thread of the tail end thread 1; the outer peripheral surface of the screw head is a conical surface, and a plurality of oblique ribs are provided along the conical surface of the screw head, through the provision of the tail end thread, the head end thread and the oblique ribs.

[0004] The above patent optimizes the anti-loosening performance of the drywall screw; and the thread outer diameter of the head end thread is larger than the thread outer diameter of the tail end thread, thereby avoiding the problem that after the tail end thread is squeezed into the mounting hole, the hole diameter is squeezed and expanded, resulting in the problem of low tightness between the head end thread and the mounting hole. By setting the thread outer diameter of the head end thread larger than the thread outer diameter of the tail end thread, the head end thread and the inner wall of the mounting hole are also in a sufficiently squeezed state, thereby further improving the connection strength of the drywall screw; however, the disadvantage of the above patent is that after long-term use, it is easy to cause the drywall screw to loosen and fall off due to external force, thereby affecting its connection effect.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The utility model aims to provide a loose-proof drywall screw structure to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A drywall nail structure for preventing loosening, comprising a nail body; the nail body has an overall diameter of 4.2 mm and a length of 38 mm, a tail end portion is integrally formed on the top of the nail body, an inclined transition slope is provided between the tail end portion and the nail body, a drill head portion is integrally formed on the bottom of the nail body, two symmetrically arranged chip grooves are provided on the side wall of the drill head, and a cutting edge is provided on one side of the chip groove; an external thread portion is integrally formed on the side wall of the nail body, and a rhombus groove is vertically provided on the nail body, and the minimum distance between the rhombus groove and the side wall of the nail body is between 0.80 mm and 1.20 mm; the pitch of the external thread portion gradually decreases from bottom to top.

[0009] As a further feature of this solution, the surface of the transition slope is provided with a plurality of ribs in a circular array.

[0010] As a further feature of this solution, a straight groove is provided at the top of the tail end portion.

[0011] As a further feature of this solution, a seal is provided on the top of the chip removal groove.

[0012] As a further feature of the present invention, there are two diamond-shaped grooves, both of which are arranged along the length direction of the nail body, and the two diamond-shaped grooves are arranged perpendicular to each other, and the two diamond-shaped grooves divide the nail body into four parts.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The provision of the protruding ribs helps the drywall nails of the present invention to be pushed into an object, such as a wooden board, because the fibers of the wooden board will rebound, thereby blocking the protruding ribs and preventing the nail body from rotating.

[0015] When in use, the nail body will be twisted and deformed at the thinnest part of the diamond groove, thereby preventing the nail body from loosening after tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The invention is a structural schematic diagram of an anti-loosening dry wall screw structure.

[0017] Figure 2 A front view of a structure for preventing loosening of drywall screws.

[0018] Figure 3 A side view of a loose-proof drywall screw structure.

[0019] Figure 4 This is a cross-sectional view of an anti-loosening drywall screw structure along the AA axis.

[0020] Figure 5 Schematic diagram of the structure of an anti-loosening drywall screw structure in some embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0022] See also Figure 1-4 , an anti-loosening drywall nail structure, comprising a nail body 1;

[0023] The nail body 1 has an overall diameter of 4.2 mm and a length of 38 mm. A tail portion 2 is integrally formed on the top of the nail body 1. An inclined transition slope 3 is provided between the tail portion 2 and the nail body 1.

[0024] In this embodiment, the surface of the transition slope 3 is provided with a plurality of protruding ribs 4 in a circular array. The provision of the protruding ribs 4 helps the drywall nail of this embodiment to be pushed into an object, such as a wooden board, and the fibers of the wooden board will rebound, thereby jamming the protruding ribs 4, thereby preventing the nail body 1 from rotating;

[0025] In this embodiment, a straight groove 5 is formed on the top of the tail end portion 2.

[0026] The bottom of the nail body 1 is integrally formed with a drill head 6. The drill head in this solution helps the nail body to be screwed into an object. At the same time, two symmetrically arranged chip grooves 7 are arranged on the side wall of the drill head 6. A cutting edge 8 is arranged on one side of the chip groove 7. It is also worth noting that the top of the chip groove 7 is sealed.

[0027] An external threaded portion 9 is integrally formed on the side wall of the nail body 1, and a rhombus-shaped groove 10 is vertically formed on the nail body 1, and the minimum distance between the rhombus-shaped groove 10 and the side wall of the nail body 1 is between 0.80 mm and 1.20 mm;

[0028] The pitch of the external thread portion 9 gradually decreases from bottom to top.

[0029] When the utility model is used, a hole having the same minor diameter as the external threaded portion 9 is drilled on the surface of an object (such as wood) by a drill bit, and then the bottom of the external threaded portion 9 cuts the hole, and the pitch of the external threaded portion 9 gradually decreases from bottom to top;

[0030] As the pitch increases, the external thread portion 9 will enter more fiber layers during each rotation, and thus the force it receives is also greater. Therefore, the forces received by the top and bottom of the external thread portion 9 inside the object are different; therefore, the stress on the nail body 1 will be concentrated on the thinnest part of the rhombus groove 10 away from the side wall of the nail body 1. At the same time, the tail of the chip groove 7 of the drill bit 3 is closed, and the chips are always accumulated at the root of the drill bit 3, making the wood contacted by the bottom of the external thread portion 9 harder, and continuing to screw into the nail body causes the external nail body 1 to twist at the thinnest part of the rhombus groove 10, thereby preventing the nail body 1 from loosening after tightening.

[0031] In certain embodiments of the present scheme, there are two diamond grooves 10, both of which are arranged along the length direction of the nail body 1, and the two diamond grooves 10 are arranged perpendicular to each other, and the two diamond grooves 10 divide the nail body 1 into four parts.

[0032] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A drywall screw structure, comprising a screw body; characterized in that: The overall diameter of the nail body is 4.2mm and the length is 38mm. The top of the nail body is integrally formed with a tail end portion, and an inclined transition slope is provided between the tail end portion and the nail body. The bottom of the nail body is integrally formed with a drill head portion, and the side wall of the drill head portion is provided with two symmetrically arranged chip grooves, and one side of the chip groove is provided with a cutting edge; an external thread portion is integrally formed on the side wall of the nail body, and a diamond groove is vertically provided on the nail body, and the minimum distance between the diamond groove and the side wall of the nail body is between 0.80mm and 1.20mm; the pitch of the external thread portion gradually decreases from bottom to top.

2. The anti-loosening drywall screw structure according to claim 1, characterized in that: The surface of the transition slope is provided with a plurality of ribs in a circular array.

3. The anti-loosening drywall screw structure according to claim 1, characterized in that: A straight groove is formed on the top of the tail end portion.

4. The anti-loosening drywall screw structure according to claim 1, characterized in that: The top of the chip removal groove is sealed.

5. The anti-loosening drywall screw structure according to claim 1, characterized in that: There are two rhombus grooves in total, both of which are arranged along the length direction of the nail body, and the two rhombus grooves are arranged perpendicular to each other, and the two rhombus grooves divide the nail body into four parts.

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