High-stability cross-shaped self-tapping screw

Abstract

The utility model belongs to the technical field of self-tapping screws, particularly relates to a high-stability cross-shaped self-tapping screw, and provides the following scheme aiming at the stability problem: the high-stability cross-shaped self-tapping screw comprises a reinforcing sheet; the upper surface of the reinforcing sheet is fixedly connected with a bolt head; a cross groove is formed in the upper surface of the bolt head; the lower surface of the reinforcing sheet is fixedly connected with a screw rod; the lower end of the screw rod is fixedly connected with a drill bit; the lower surface of the reinforcing sheet is fixedly connected with a rubber pad; a protection mechanism is arranged on the outer surface of one side of the bolt head. Through the arrangement of the protection mechanism, the outer surface of the screw can be protected by injecting lubricating oil, the outer surface of the screw is prevented from being corroded by water vapor, and the stability is improved; and glue can be injected to fill a gap between the screw rod and the thread groove, so that the stability of the screw rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-tapping screws, in particular to a highly stable cross self-tapping screw. Background Art

[0002] Self-tapping screws, or quick-thread screws, are steel fasteners that are passivated with zinc plating on the surface. Self-tapping screws are mostly used to connect thin metal plates (steel plates, sawn plates, etc.). When connecting, first make a threaded bottom hole for the connected parts, and then screw the self-tapping screw into the threaded bottom hole of the connected parts.

[0003] However, the prior art still has shortcomings. In the prior art, it is easy to rotate in the opposite direction from the workpiece due to the shaking caused by the outside world, which increases the frequency of subsequent maintenance.

[0004] Therefore, we propose a high-stability cross self-tapping screw to solve this problem. Summary of the invention

[0005] The utility model aims to solve the problems raised in the above background technology and provides a highly stable cross self-tapping screw.

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

[0007] A highly stable cross tapping screw comprises a reinforcing plate; a bolt head is fixedly connected to the upper surface of the reinforcing plate; a cross groove is provided on the upper surface of the bolt head; a screw rod is fixedly connected to the lower surface of the reinforcing plate; a drill bit is fixedly connected to the lower end of the screw rod; a rubber pad is fixedly connected to the lower surface of the reinforcing plate; and a protective mechanism is provided on the outer surface of one side of the bolt head.

[0008] Preferably, the protective mechanism includes a groove arranged on the outer surface of one side of the bolt head; a No. 1 connecting groove is provided on the outer surface of one side of the groove; a No. 2 connecting groove is provided on the lower surface of the No. 1 connecting groove; a No. 1 through hole is provided on the upper side of the inner surface of the No. 2 connecting groove; a No. 2 through hole is provided on the lower side of the inner surface of the No. 2 connecting groove; and a block is fixedly connected to the inner surface of the groove.

[0009] Preferably, the blocking block comprises a No. 1 rubber block slidably mounted on the inner surface of a No. 1 connecting groove; a rubber sheet is fixedly connected to an outer surface of one side of the No. 1 rubber block; and a No. 2 rubber block is fixedly connected to an outer circumferential surface of the No. 1 rubber block.

[0010] Preferably, the No. 2 connecting groove is located on the inner surface of the screw; and the diameter of the No. 1 through hole is larger than the diameter of the No. 2 through hole.

[0011] Preferably, the diameter of the rubber sheet is larger than the diameter of the groove; the diameter of the No. 1 rubber block is the same as the diameter of the No. 1 connecting groove.

[0012] Preferably, the diameter of the rubber pad is the same as the diameter of the reinforcement sheet; and the bolt head is a hexagonal bolt head.

[0013] In the utility model, the high-stability cross tapping screw is provided with a No. 1 connecting groove, a No. 2 connecting groove, a No. 1 through hole, a No. 2 through hole, a blocking block, a rubber sheet, a No. 1 rubber block, and a No. 2 rubber block. When the screw is fixed, the rubber sheet is taken out, and the movement of the rubber sheet will drive the No. 1 rubber block to leave the No. 1 connecting groove, and then lubricating oil or glue is injected into the No. 1 connecting groove. The injection of lubricating oil can protect the outer surface of the screw to prevent the outer surface of the screw from being corroded by water vapor. After the injection of lubricating oil, the No. 1 rubber block can be pushed back into the No. 1 connecting groove, and the No. 2 rubber block will squeeze the No. 1 connecting groove, thereby fixing the No. 1 rubber block, thereby sealing the No. 1 connecting groove; the injection of glue can fill the gap between the screw and the thread groove, thereby improving the stability of the screw;

[0014] In the utility model, the highly stable cross tapping screw can increase the friction between the reinforcing sheet and the object by setting the rubber pad, so that the screw rod is firmly located inside the workpiece to play a connecting role and is not easy to fall off from the workpiece due to shaking caused by the outside world;

[0015] The utility model has reasonable structural design, simple operation and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a highly stable cross self-tapping screw proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a highly stable cross self-tapping screw proposed by the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the blocking block in the utility model.

[0019] In the figure: 1. reinforcement plate; 2. bolt head; 3. screw; 4. drill bit; 5. cross slot; 6. rubber pad; 7. groove; 8. connecting slot No. 1; 81. connecting slot No. 2; 82. through hole No. 1; 83. through hole No. 2; 9. blocking block; 91. rubber sheet; 92. rubber block No. 1; 93. rubber block No. 2. DETAILED DESCRIPTION

[0020] 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.

[0021] Reference Figure 1-3 A high-stability cross self-tapping screw comprises a reinforcing plate 1; a bolt head 2 is fixedly connected to the upper surface of the reinforcing plate 1; a cross groove 5 is provided on the upper surface of the bolt head 2; a screw rod 3 is fixedly connected to the lower surface of the reinforcing plate 1; a drill bit 4 is fixedly connected to the lower end of the screw rod 3; a rubber pad 6 is fixedly connected to the lower surface of the reinforcing plate 1; and a protective mechanism is provided on the outer surface of one side of the bolt head 2.

[0022] Furthermore, the protective mechanism includes a groove 7 arranged on the outer surface of one side of the bolt head 2; a No. 1 connecting groove 8 is provided on the outer surface of one side of the groove 7; a No. 2 connecting groove 81 is provided on the lower surface of the No. 1 connecting groove 8; a No. 1 through hole 82 is provided on the upper side of the inner surface of the No. 2 connecting groove 81; a No. 2 through hole 83 is provided on the lower side of the inner surface of the No. 2 connecting groove 81; and a block 9 is fixedly connected to the inner surface of the groove 7.

[0023] Furthermore, the blocking block 9 includes a No. 1 rubber block 92 slidably mounted on the inner surface of the No. 1 connecting groove 8 ; a rubber sheet 91 is fixedly connected to the outer surface of one side of the No. 1 rubber block 92 ; and a No. 2 rubber block 93 is fixedly connected to the outer circumferential surface of the No. 1 rubber block 92 .

[0024] Furthermore, the second connecting groove 81 is located on the inner surface of the screw rod 3 ; the diameter of the first through hole 82 is greater than the diameter of the second through hole 83 .

[0025] Furthermore, the diameter of the rubber sheet 91 is larger than the diameter of the groove 7 ; the diameter of the first rubber block 92 is the same as the diameter of the first connecting groove 8 .

[0026] Furthermore, the diameter of the rubber pad 6 is the same as the diameter of the reinforcing sheet 1; and the bolt head 2 is a hexagonal bolt head.

[0027] In the utility model, when in use, after the screw 3 is fixed, the rubber sheet 91 is taken out, and the movement of the rubber sheet 91 will drive the No. 1 rubber block 92 to leave the No. 1 connecting groove 8, and then lubricating oil or glue is injected into the No. 1 connecting groove 8. The injection of lubricating oil can protect the outer surface of the screw 3 to prevent the outer surface of the screw 3 from being corroded by water vapor. After the injection of lubricating oil, the No. 1 rubber block 92 can be pushed back into the No. 1 connecting groove 8, and the No. 2 rubber block 93 will squeeze the No. 1 connecting groove 8, thereby fixing the No. 1 rubber block 92, thereby sealing the No. 1 connecting groove 8; the injection of glue can fill the gap between the screw 3 and the thread groove, thereby improving the stability of the screw 3; the setting of the rubber pad 6 can increase the friction between the reinforcing sheet 1 and the object, so that the screw 3 is firmly located inside the workpiece to play a connecting role, and is not easy to fall off from the workpiece due to shaking caused by the outside world.

[0028] 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.

[0029] 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.

[0030] 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 highly stable cross self-tapping screw, characterized in that: The invention comprises a reinforcing sheet (1); a bolt head (2) is fixedly connected to the upper surface of the reinforcing sheet (1); a cross groove (5) is provided on the upper surface of the bolt head (2); a screw rod (3) is fixedly connected to the lower surface of the reinforcing sheet (1); a drill bit (4) is fixedly connected to the lower end of the screw rod (3); a rubber pad (6) is fixedly connected to the lower surface of the reinforcing sheet (1); and a protective mechanism is provided on the outer surface of one side of the bolt head (2).

2. A highly stable cross self-tapping screw according to claim 1, characterized in that: The protection mechanism comprises a groove (7) arranged on the outer surface of one side of the bolt head (2); a No. 1 connecting groove (8) is arranged on the outer surface of one side of the groove (7); a No. 2 connecting groove (81) is arranged on the lower surface of the No. 1 connecting groove (8); a No. 1 through hole (82) is arranged on the upper side of the inner surface of the No. 2 connecting groove (81); a No. 2 through hole (83) is arranged on the lower side of the inner surface of the No. 2 connecting groove (81); and a blocking block (9) is fixedly connected to the inner surface of the groove (7).

3. A highly stable cross tapping screw according to claim 2, characterized in that: The blocking block (9) comprises a first rubber block (92) slidably mounted on the inner surface of a first connecting groove (8); a rubber sheet (91) is fixedly connected to an outer surface of one side of the first rubber block (92); and a second rubber block (93) is fixedly connected to an outer circumferential surface of the first rubber block (92).

4. A highly stable cross tapping screw according to claim 3, characterized in that: The No. 2 connecting groove (81) is located on the inner surface of the screw rod (3); the diameter of the No. 1 through hole (82) is greater than the diameter of the No. 2 through hole (83).

5. A highly stable cross tapping screw according to claim 3, characterized in that: The diameter of the rubber sheet (91) is greater than the diameter of the groove (7); the diameter of the No. 1 rubber block (92) is the same as the diameter of the No. 1 connecting groove (8).

6. A highly stable cross tapping screw according to claim 1, characterized in that: The diameter of the rubber pad (6) is the same as the diameter of the reinforcing sheet (1); and the bolt head (2) is a hexagonal bolt head.

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