Sheet self-tapping screw

Abstract

The utility model discloses a thin plate self-tapping screw which comprises a screw rod body, a self-tapping nut used for rotating the self-tapping screw on a thin plate through a wrench, a screwdriver and a cross screwdriver is arranged at the end of the screw rod body, and a self-tapping screw head used for conducting positioning, self-tapping, screwing and positioning on the thin plate is integrally arranged at the lower end of the screw rod body. According to the self-tapping screw, the self-tapping nut is of the outer hexagonal structure, the inner hexagonal hole groove is formed in the end of the self-tapping nut, and the cross groove is formed in the inner hexagonal hole groove, so that the self-tapping screw can be screwed through a monkey wrench, a hexagon wrench and wrenches of the same model when being screwed on a thin plate; the self-tapping screw can be used by means of different types of wrenches in the screwing process, the screwing mode of the self-tapping screw becomes diversified, and therefore the self-tapping screw is screwed on a thin plate to achieve use of various wrenches, and the range of using tools and the use range of the self-tapping screw are further widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of self-tapping screws, in particular to a thin plate self-tapping screw. Background Art

[0002] A self-tapping screw is a threaded fastener that self-drills a matching female thread into a pre-drilled hole in a metal or non-metallic material. Self-tapping screws are characterized by high tensile strength, a single piece, and a single-sided assembly. They are primarily used to connect thin metal sheets (steel, sawn plate, etc.). To connect, a threaded hole is first drilled into the connected parts, and then the self-tapping screw is screwed into the threaded hole. Because the threaded surface of the self-tapping screw has a high hardness (≥45HRC), it can tap the internal thread in the threaded hole of the connected parts, thus forming a connection. Currently, self-tapping screws are widely used in the machinery industry and related industries for a long time. Traditional self-tapping screws consist of a nut, a shank, and a head. Before driving the self-tapping screw, a positioning piece is usually required to locate the desired position. Then, the self-tapping screw is aligned with the positioning piece. Both the self-tapping screw and the positioning piece are required for operation. Although a few self-tapping screws have a positioning post on the head, the post is prone to breakage, affecting work efficiency.

[0003] To this end, a self-tapping screw with the announcement number "CN220622412U" includes a screw body, a nut connected to the top of the screw body, a screw head arranged below the screw body; a positioning head, arranged below the screw head, used to position the self-tapping screw; a magnet, arranged inside the nut, used to attract and position the screwdriver; an external thread, arranged on the outer peripheral wall of the screw body; and a positioning head arranged at the bottom of the screw head. The self-tapping screw aligns the top of the ridge-shaped positioning head with the center of the part to be driven into. When the screwdriver controls the positioning head and the external thread used for drilling to rotate, the positioning head first drills into the center of the part to be driven into through the cut surface to prevent the screw from being driven off-center. The external thread then enters the workpiece through the thread, allowing the positioning function to be achieved using only the screw. In addition, a magnet is embedded in the nut, which can attract the screwdriver and prevent it from slipping out of the cross slot, thereby improving work efficiency.

[0004] However, for the above-mentioned self-tapping screws, although the positioning head first drills into the center of the turning part through the cut surface when the screwdriver controls the positioning head and the external thread for drilling to rotate, thereby preventing the screw from being deflected, the following relatively obvious defects still exist during use: the above-mentioned self-tapping screws can only be screwed by using a cross and flat-head screwdriver, and cannot be screwed and fixed using a adjustable spanner, a hexagonal spanner, or a commonly used spanner. As a result, the tools used for screwing the self-tapping screws are relatively single and the scope of application of the tools is limited. Utility Model Content

[0005] The purpose of the utility model is to provide a thin plate self-tapping screw to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a thin plate self-tapping screw, comprising:

[0007] The screw body has a self-tapping nut at the end thereof for rotating the self-tapping screw on the thin plate using a wrench, a screwdriver and a cross-head screwdriver. The lower end of the screw body is integrally provided with a self-tapping screw head for positioning and self-tapping on the thin plate. The outer side of the self-tapping screw head is provided with self-tapping blade wings with a flat bottom, oblique upward hooks on both sides, and for expanding the hole of the thin plate.

[0008] The anti-loosening metal sheet is integrally formed with the bottom of the self-tapping nut, and the bottom of the anti-loosening metal sheet is evenly provided with an anti-loosening tooth surface with a tooth-shaped structure to lock the self-tapping screw on the thin plate for reinforcement and locking.

[0009] Preferably, the end of the self-tapping nut is provided with a hexagonal hole groove for screwing the self-tapping screw with a hexagonal wrench, and the bottom end of the inner side of the hexagonal hole groove is provided with a cross slot, so that the self-tapping screw can be screwed on the thin plate using different tools.

[0010] Preferably, the outer surface of the self-tapping nut is evenly provided with anti-slip teeth for preventing the wrench from slipping when twisting the self-tapping screw, so that the wrench can be clamped on the self-tapping nut when twisting.

[0011] Preferably, a positioning screw head with a self-tapping blade is provided at the center of the bottom of the self-tapping blade wing, and a screwing blade is provided on the outer surface of the positioning screw head to facilitate the rapid screwing of the self-tapping screw onto the thin plate.

[0012] Preferably, both sides of the self-tapping blade wing surface are provided with discharge blade grooves for discharging iron chips generated during self-tapping locking, so that the generated waste chips can be discharged in time.

[0013] Preferably, the conical outer surface of the self-tapping screw head is provided with a spiral cutting edge, and the spiral cutting edge and the tail of the self-tapping screw head are integrally processed and formed, thereby improving the efficiency of screwing the self-tapping screw into the thin plate.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the thin plate self-tapping screw, through the self-tapping nut having an external hexagonal structure, the internal hexagonal hole groove opened at the end of the self-tapping nut, and the cross slot in the internal hexagonal hole groove, can be screwed into the thin plate by a flexible wrench, a hexagonal wrench and a wrench of the same model, so that different types of wrenches can be used when screwing the self-tapping screw, and the way of screwing the self-tapping screw becomes more diverse, so that the self-tapping screw can be screwed on the thin plate with the use of multiple wrenches, further improving the range of tools and the use range of the self-tapping screw.

[0015] The anti-slip teeth on the outside of the self-tapping nut are provided so that after the wrench is clamped on the self-tapping nut, the anti-slip teeth can be used to make the wrench more firmly and stably clamped when tightening the self-tapping screw, and the wrench will not be separated from the self-tapping nut, so that the self-tapping screw can be tightened on the thin plate at one time. The anti-loosening metal sheet on the bottom of the self-tapping nut drives the anti-loosening tooth surface, so that the self-tapping screw can contact with the surface of the thin plate after being screwed on it to tighten it, thereby avoiding the phenomenon of the screw falling off caused by vibration of the thin plate, and thus making the self-tapping screw locked on the thin plate more firmly and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the top view of the self-tapping nut of the utility model;

[0018] Figure 3 This is a schematic diagram of the anti-loosening metal sheet structure when viewed from above.

[0019] In the figure: 1. Screw body; 2. Self-tapping nut; 3. Self-tapping screw head; 4. Self-tapping blade; 5. Positioning screw head; 6. Anti-loosening metal sheet; 7. Anti-loosening tooth surface; 8. Anti-slip teeth for twisting; 9. Hexagonal hole slot; 10. Cross slot; 11. Twisting blade; 12. Discharge blade slot; 13. Spiral cutting blade. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3 The utility model provides a technical solution: a thin plate self-tapping screw, comprising:

[0022] The screw body 1 has a self-tapping nut 2 at the end thereof, which is used to rotate the self-tapping screw on the thin plate using a wrench, a screwdriver and a cross, and the self-tapping nut 2 is an external hexagonal integrally formed and is screwed with a commonly used wrench. The lower end of the screw body 1 is integrally provided with a self-tapping screw head 3 for positioning the self-tapping screw on the thin plate. The self-tapping screw head 3 is used to speed up the speed of screwing the self-tapping screw into the thin plate during rotation, and helps to discharge metal waste chips. The outer side of the self-tapping screw head 3 is provided with a self-tapping blade wing 4 with a flat bottom, oblique upward hooks on both sides, and for expanding the hole of the thin plate, so that the internal strength of the self-tapping screw on the thin plate is further expanded, thereby increasing the stability and firmness of the self-tapping screw in the thin plate.

[0023] The anti-loosening metal sheet 6 is integrally formed with the bottom of the self-tapping nut 2, which can make the self-tapping screw have better overall strength performance during use. The bottom of the anti-loosening metal sheet 6 is evenly provided with an anti-loosening tooth surface 7 with a tooth-shaped structure to lock the self-tapping screw on the thin plate for reinforcement and locking, so that the self-tapping nut 2 of the self-tapping screw can rotate and clamp after contacting the surface of the thin plate to prevent slipping and loosening, thereby enhancing the firmness of the self-tapping screw.

[0024] The end of the self-tapping nut 2 is provided with an inner hexagonal hole groove 9 for screwing the self-tapping screw with a hexagonal wrench. The self-tapping screw can be screwed with a hexagonal wrench, and a cross slot 10 is provided at the bottom inner end of the inner hexagonal hole groove 9. A cross screwdriver and a flat screwdriver can be used to screw the self-tapping screw. The outer surface of the self-tapping nut 2 is evenly provided with anti-slip teeth 8 for screwing the self-tapping screw with a wrench to prevent slipping. The wrench can be stuck on the self-tapping nut 2 more firmly and will not fall off during screwing. The center of the bottom of the self-tapping blade wing 4 A positioning screw head 5 with a self-tapping blade is provided in the position, so that the self-tapping screw will not be offset on the thin plate during the screwing process, and a screwing blade 11 is provided on the outer surface of the positioning screw head 5. The surfaces of the self-tapping blade wings 4 are provided with discharge blade grooves 12 on both sides for discharging the iron blood generated during the self-tapping locking, which is conducive to discharging the waste to the outside in time. The conical outer surface of the self-tapping screw head 3 is provided with a spiral cutting blade 13, and the spiral cutting blade 13 and the tail of the self-tapping screw head 3 are integrally processed and formed to speed up the speed of screwing the self-tapping screw onto the thin plate.

[0025] Specifically, when in use, the staff first inserts the positioning screw head 5 on the self-tapping blade wing 4 into the surface of the thin plate through the self-tapping blade wing 4 provided on the outside of the self-tapping screw head 3 at the bottom end of the screw body 1 to position the screw body 1, and uses the outer hexagonal hole groove 9 and the inner hexagonal hole groove 10 of the self-tapping nut 2 and the end, so that the self-tapping screw can be screwed with a movable wrench, a hexagonal wrench, a cross screwdriver and a flat-head screwdriver, which allows the self-tapping screw to be screwed with the help of different types of wrenches, and makes the way of screwing the self-tapping screw more diverse. By setting the anti-slip teeth 8 on the outside of the self-tapping nut 2, after the wrench is clamped on the self-tapping nut 2, the anti-slip teeth 8 can be used to make the wrench more firmly and stably clamped when tightening the self-tapping screw, and the wrench will not be separated from the self-tapping nut 2, so that the self-tapping screw can be tightened on the thin plate at one time. The anti-loosening metal sheet 6 that drives the anti-loosening tooth surface 7 is set at the bottom of the self-tapping nut 2, so that the self-tapping screw can be screwed on the thin plate and contacted with its surface for fastening, thereby avoiding the vibration of the thin plate and the phenomenon of wire back falling off.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thin plate self-tapping screw, characterized in that: include: A screw body (1), the end of the screw body (1) is provided with a self-tapping nut (2) for rotating the self-tapping screw on the thin plate using a wrench, a screwdriver and a cross-head screwdriver, the lower end of the screw body (1) is integrally provided with a self-tapping screw head (3) for positioning and self-tapping on the thin plate, and the outer side of the self-tapping screw head (3) is provided with a self-tapping blade (4) with a flat bottom and two sides with oblique upward hooks for expanding the hole of the thin plate; The anti-loosening metal sheet (6) is integrally formed with the bottom of the self-tapping nut (2), and the bottom of the anti-loosening metal sheet (6) is evenly provided with an anti-loosening tooth surface (7) with a tooth-shaped structure for reinforcing and locking the self-tapping screw on the thin plate.

2. The thin plate self-tapping screw according to claim 1, characterized in that: The end of the self-tapping nut (2) is provided with an inner hexagonal hole groove (9) for a hexagonal wrench to screw the self-tapping screw, and the inner bottom end of the inner hexagonal hole groove (9) is provided with a cross groove (10).

3. The thin plate self-tapping screw according to claim 1, characterized in that: The outer surface of the self-tapping nut (2) is evenly provided with anti-slip teeth (8) for preventing a wrench from slipping when twisting the self-tapping screw.

4. The thin plate self-tapping screw according to claim 1, characterized in that: A positioning screw head (5) with a self-tapping blade is provided at the center of the bottom of the self-tapping blade wing (4), and a screwing blade (11) is provided on the outer surface of the positioning screw head (5).

5. The thin plate self-tapping screw according to claim 1, characterized in that: Both sides of the surface of the self-tapping blade wing (4) are provided with discharge blade grooves (12) for discharging iron blood generated during self-tapping locking.

6. The thin plate self-tapping screw according to claim 1, characterized in that: The conical outer surface of the self-tapping screw head (3) is provided with a spiral cutting edge (13), and the spiral cutting edge (13) and the tail of the self-tapping screw head (3) are integrally processed and formed.

Images