four-wire drywall nail

Abstract

The utility model discloses a four line dry wall nail, including the nail head, the nail rod and the nail tip, be provided with the thread on the nail rod and the nail tip, the end face of the nail head is provided with the stress groove to the nail tip, and the convex stripe is protruding on this end face, the convex stripe is set in the downstream side of stress groove along the screwing into rotation direction, the four line dry wall nail has reduced the probability of slippage generation, and therefore has reduced the probability of stress groove damage, makes four line dry wall nail can work more stably.

Description

Technical Field

[0001] This utility model belongs to the field of hardware consumables technology, specifically relating to a four-wire drywall screw. Background Technology

[0002] Four-wire drywall screws are one of the most important categories of fasteners, primarily used for installing gypsum board, lightweight partitions, and suspended ceilings. However, the quality of various four-wire drywall screws varies greatly. Using low-quality screwdriver bits or applying uneven pressure can easily cause slippage and damage to the screw groove, rendering them unusable. This is especially problematic if it occurs halfway through use, potentially preventing further drilling and easy removal, severely impacting the work process.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide an improved four-wire drywall screw to reduce the probability of slippage.

[0005] To achieve the above objectives, a specific embodiment of this utility model provides a four-wire drywall screw, including a screw head, a screw shank, and a screw tip. The screw shank and the screw tip are provided with threads. The end face of the screw head away from the screw tip is provided with a force-receiving groove and a protrusion extending from the end face. The protrusion is located downstream of the force-receiving groove along the screwing rotation direction.

[0006] In one or more embodiments of this utility model, the force-receiving groove is a cross-shaped groove body, including four elongated grooves, and four protrusions are provided, which are respectively arranged at the downstream end of the four elongated grooves along the screwing rotation direction.

[0007] In one or more embodiments of this utility model, the force-receiving groove is provided with the protrusion at its downstream end along the twisting rotation direction.

[0008] In one or more embodiments of this utility model, the length of the protrusion is greater than or equal to the length of the elongated groove.

[0009] In one or more embodiments of this utility model, an annular boss is provided on the end face of the nail head facing the nail tip.

[0010] In one or more embodiments of this utility model, multiple bosses are provided along the axial direction of the nail rod.

[0011] In one or more embodiments of the present invention, the thread includes a first thread segment and a second thread segment, the first thread segment extending on the nail tip and part of the nail shank, the second thread segment extending between the first thread segment and the nail head, and the thread pitch of the second thread segment being greater than the thread pitch of the first thread segment.

[0012] In one or more embodiments of this utility model, the thread height of the second threaded segment is greater than the thread height of the first threaded segment.

[0013] In one or more embodiments of this utility model, the first threaded segment includes two threads in a double helix shape.

[0014] In one or more embodiments of the present invention, the thread in the second threaded segment is connected to one of the threads in the first threaded segment.

[0015] Compared with the prior art, the four-wire drywall screw in this invention reduces the probability of slippage and thus reduces the probability of damage to the force groove, enabling the four-wire drywall screw to work more stably. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a four-wire drywall nail in one embodiment of the present invention;

[0018] Figure 2 This is a side view of a four-wire drywall nail in one embodiment of the present invention.

[0019] Explanation of key figure labels:

[0020] 100-Four-wire drywall screw, 10-Screw head, 11-Force groove, 12-Raised bar, 13-Boss, 20-Screw, 30-Screw tip, 41-First threaded section, 42-Second threaded section. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0022] like Figure 1-2 As shown, a four-wire drywall screw 100 in one embodiment of the present invention includes a screw head 10, a screw shank 20, and a screw tip 30. The screw shank 20 and the screw tip 30 are provided with threads. The end face of the screw head 10 away from the screw tip 30 is provided with a force-receiving groove 11 and a protrusion 12 extending from the end face. The force-receiving groove 11 is used to cooperate with the insertion of a screwdriver bit. The protrusion 12 is provided on the downstream side of the force-receiving groove 11 along the rotation direction of screwing in, and it protrudes upward above the end face of the screw head 10 along one side wall of the force-receiving groove 11.

[0023] In this embodiment, the protrusion 12 indirectly increases the depth of the force groove 11, thereby increasing the contact area with the bit. The bit needs to retreat a greater distance to slip off. Therefore, the protrusion 12 reduces the probability of slippage and thus reduces the probability of damage to the force groove 11, enhancing the fault tolerance during use, improving assembly efficiency and tightening reliability, and enabling the four-wire drywall screw 100 to work more stably.

[0024] For example, in such Figure 2 In the illustrated embodiment, the force-bearing groove 11 is a cross-shaped groove, comprising four interconnected elongated grooves, requiring a cross-shaped screwdriver bit for adaptation. A raised rib 12 is provided on the downstream side of each groove along the screwing rotation direction; that is, a raised rib 12 is provided for each functional part of the cross-shaped screwdriver bit, thus greatly improving stability during operation and reducing the probability of slippage.

[0025] Preferably, the length of the convex strip 12 is greater than or equal to the length of the elongated groove (e.g., Figure 2 The length of the central convex strip 12 is greater than the length of the elongated groove, and it is used to completely cover the contact surface between the elongated groove and the corresponding bit part, thereby ensuring the effect of reducing slippage.

[0026] When the force-bearing groove 11 is a straight groove or a groove of other shapes, the protrusion 12 can be set on the downstream side of the force-bearing groove 11 along the screwing rotation direction.

[0027] Preferably, a protrusion 12 can also be provided on the other side of the force groove 11 (downstream of the screwing rotation direction) to reduce the probability of slippage when screwing out. Therefore, the four-wire drywall nail 100 is not prone to slippage when screwing in or out, thus improving the reuse rate.

[0028] Drilling screws into drywall can cause the surface paper of the drywall to crack (commonly known as "blowing"). Since the paper is a crucial support layer for the strength of the drywall, damage to it significantly weakens the screw's gripping force. Therefore, preferably, an annular protrusion 13 is provided on the end face of the screw head 10 facing the screw tip 30. This protrusion 13 effectively presses the cracked paper back into the hole, forming a clean and flat indentation. The protrusion 13 significantly reduces the degree of paper tearing, improves the integrity of the paper surface, and enhances the gripping force between the four-wire drywall screw 100 and the drywall, extending the service life of the connection.

[0029] Preferably, the boss 13 has multiple protrusions on the end face of the nail head 10 facing the nail tip 30 (e.g., Figure 1 The central boss 13 has two parts, thus forming a stepped structure on the end face of the nail tip 30, which can further reduce the probability of gypsum board surface blooming and the probability of the four-wire drywall nail 100 excessively drilling into the gypsum board.

[0030] A single thread structure has limited engagement force, especially in the combined structure of plasterboard and keel, which is prone to pull-out, seriously affecting the stability and safety of the structure. Therefore, in one embodiment, the thread on the four-thread drywall nail 100 is two-sectioned, including a first thread section 41 and a second thread section 42. The first thread section 41 is distributed on the nail tip 30 and part of the nail shank 20, while the second thread section 42 is only distributed on the remaining part of the nail shank 20, located between the first thread section 41 and the nail head 10. This four-thread drywall nail 100 is mainly used in ceiling installation work, where the tip may need to drill into the light steel keel. Therefore, it adopts a two-section structure. The thread pitch L2 of the second thread section 42 is greater than the thread pitch L1 of the first thread section 41. Therefore, the first thread section 41 (fine pitch thread) can efficiently penetrate the plasterboard and drill into the keel. The second threaded section 42 at the rear end has a larger pitch L1 and is a coarse-pitch thread. By increasing the contact area between the nail rod 20 and the gypsum board, the interlocking force between them is increased, thus fixing the nail more firmly to the gypsum board.

[0031] The two-stage threaded structure, through the matching of different thread pitches, generates different thread pitch tensions during screwing, thereby enhancing the friction between the threaded structure and the gypsum board or light steel keel, and improving the pull-out resistance. Tests show that, compared to a single-threaded structure, the pull-out resistance of the double-threaded structure in this embodiment is improved by 15%.

[0032] Furthermore, the thread height H2 of the second threaded section 42 is greater than the thread height H1 of the first threaded section 41, thereby further improving the interlocking force of the second threaded section 42 between the gypsum boards and further improving the fixing effect between the four-wire drywall nail 100 and the gypsum board.

[0033] In one embodiment, the four-thread drywall screw 100 combines two forms: double-thread fine teeth and single-thread coarse teeth. Specifically, the first threaded section 41 at the front end is double-thread fine teeth, comprising two threads in a double-helix shape, while the second threaded section 42 at the rear end is single-thread coarse teeth, with a single-helix structure. This combination of structures improves the fixing effect with plasterboard and light steel keel. The thread of the second threaded section 42 is connected to one of the threads of the first threaded section 41.

[0034] In this embodiment, the four-wire drywall nail 100 improves the connection strength and stability with gypsum board and keel, as well as the safety during construction, by optimizing the thread structure, nail head 10 structure and drive structure.

[0035] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A four-ply drywall nail characterized by, It includes a nail head, a nail shank, and a conical nail tip. The nail shank and nail tip are provided with threads. The end face of the nail head away from the nail tip is provided with a force-receiving groove and a protrusion extending from the end face. The protrusion is provided on the downstream side of the force-receiving groove along the screwing rotation direction.

2. The four-line drywall anchor of claim 1, wherein, The force-bearing groove is a cross-shaped groove, including four elongated grooves. Four protrusions are provided, which are respectively located at the downstream end of the four elongated grooves along the screwing-in rotation direction.

3. The four-wire drywall screw according to claim 2, characterized in that, The force-bearing groove is provided with the protrusion at its downstream end along the twisting rotation direction.

4. The four-wire drywall screw according to claim 3, characterized in that, The length of the protrusion is greater than or equal to the length of the elongated groove.

5. The four-wire drywall screw according to claim 1, characterized in that, The end face of the nail head facing the nail tip is provided with an annular protrusion.

6. The four-wire drywall screw according to claim 5, characterized in that, Multiple bosses are provided along the axial direction of the nail rod.

7. The four-wire drywall screw according to claim 1, characterized in that, The thread includes a first thread segment and a second thread segment. The first thread segment extends on the nail tip and part of the nail shank, and the second thread segment extends between the first thread segment and the nail head. The thread pitch of the second thread segment is greater than that of the first thread segment.

8. The four-wire drywall screw according to claim 7, characterized in that, The thread height of the second thread segment is greater than that of the first thread segment.

9. The four-wire drywall screw according to claim 7, characterized in that, The first threaded segment includes two threads in a double helix shape.

10. The four-wire drywall screw according to claim 9, characterized in that, The thread in the second threaded segment is connected to one of the threads in the first threaded segment.

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