Improved self-tapping screw

Abstract

The improved self-tapping screw comprises a self-tapping screw body and a gasket, the self-tapping screw body comprises a bolt head, a base plate, a screw rod and a screw head, the screw head is arranged at one end of the screw rod, the base plate is arranged at the other end of the screw rod, and the bolt head is arranged at the end, away from the screw rod, of the base plate. A dismounting groove is formed in the end, away from the base plate, of the screw head. The bolt head is of the hexagonal structure or the octagonal structure, the polygonal structure is used for being matched with a disassembling and assembling wrench to achieve disassembling and assembling of a screw, the disassembling and assembling groove is in the plum blossom shape, and the plum blossom-shaped disassembling and assembling groove can be matched with a specific wrench to achieve disassembling and assembling of the screw (generally used when the external polygonal structure is damaged).

Description

Technical Field

[0001] This utility model relates to the field of self-tapping screw technology, specifically an improved self-tapping screw. Background Technology

[0002] Existing self-tapping screws generally consist of a threaded shank with a head at one end. The upper surface of the head has a groove. Common groove shapes are slotted, Phillips head, or hexagonal. To loosen or tighten the screw, simply use the corresponding wrench to rotate it.

[0003] The existing announcement number CN211951117U discloses a self-tapping screw, including a screw and a nut. The nut is characterized by: the nut being divided into upper and lower parts, the lower part being a truncated cone and the upper part being a column. A first engagement groove is provided on the upper surface of the column, and a sleeve assembly is fitted over the column. The sleeve assembly is provided with a second engagement groove, and its lower end is fitted over the column and detachably fixed to the nut. After the screw slips in the first engagement groove of the wrench, the screw can be easily removed by using the second engagement groove after installing the sleeve assembly. Simultaneously, a cap can be installed on the column during normal use. For aesthetic and safety considerations, a hook or cartoon-patterned cap can be selected, which not only further protects the exposed self-tapping screw head but also greatly improves the appearance of the screw. The thread cap can be a purely aesthetic cartoon pattern, or a specially designed hook can be used to enhance practicality.

[0004] Existing screws are generally installed and removed using slotted or Phillips head slots. However, slotted and Phillips head slots are easily damaged, making it impossible to install or remove the screws. In addition, existing spiral screws are also difficult to drive in. Therefore, we propose an improved self-tapping screw. Utility Model Content

[0005] The purpose of this invention is to provide an improved self-tapping screw to solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an improved self-tapping screw, comprising a self-tapping screw body and a washer, wherein the self-tapping screw body comprises a bolt head, a base plate, a screw rod and a screw head, wherein a screw head is provided at one end of the screw rod and a base plate is provided at the other end of the screw rod, wherein a bolt head is provided at the end of the base plate away from the screw rod, and a disassembly groove is provided at the end of the screw head away from the base plate.

[0007] Preferably, the screw head has a cutting tip at the end away from the screw rod, and the screw head has two cutting grooves, with a first cutting edge and a second cutting edge respectively located on both sides of the cutting grooves.

[0008] Preferably, the blade tip has a conical structure, the first blade protrudes beyond the second blade, and the blade groove is S-shaped.

[0009] Preferably, the screw rod consists of a cylinder and a screw rod body, and the washer is fitted onto the cylinder.

[0010] Preferably, the gasket is composed of a ring and a spring sheet, and two rings are provided in total, with multiple spring sheets evenly distributed between the two rings.

[0011] Preferably, the bolt head has a hexagonal or octagonal structure, and the disassembly groove is shaped like a plum blossom.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The bolt head has a hexagonal or octagonal structure. The polygonal structure is used to cooperate with a wrench to remove and install the screw. The removal and installation groove is shaped like a quincunx, which can be used with a specific wrench to remove and install the screw (generally used when the external polygonal structure is damaged).

[0014] 2. The tip of the blade is conical, which facilitates penetration. The first cutting edge protrudes from the second cutting edge, and the cutting edge groove is S-shaped. Compared with the screw structure, the first and second cutting edges are easier to penetrate. After the screw head is penetrated, it is penetrated through the screw rod.

[0015] 3. The washer consists of a ring and spring pieces. Multiple spring pieces are evenly distributed between the two rings. The washer has good buffering performance, thereby improving the anti-loosening effect of the screw. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the self-tapping screw body of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the self-tapping screw body from another perspective;

[0020] Figure 4 This is the front view of this utility model;

[0021] Figure 5 This is a top view of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the gasket of this utility model.

[0023] In the diagram: 1. Self-tapping screw body; 2. Washer; 11. Bolt head; 12. Base plate; 13. Screw rod; 14. Screw head; 15. Disassembly slot; 131. Cylinder; 132. Screw rod body; 141. First cutting edge; 142. Cutting tip; 143. Second cutting edge; 144. Cutting groove; 21. Ring; 22. Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] Please see Figure 1-6 In this embodiment of the utility model, an improved self-tapping screw includes a self-tapping screw body 1 and a washer 2. The self-tapping screw body 1 includes a bolt head 11, a base plate 12, a screw rod 13, and a screw head 14. The screw head 14 is provided at one end of the screw rod 13, and the base plate 12 is provided at the other end of the screw rod 13. The bolt head 11 is provided at the end of the base plate 12 away from the screw rod 13. The screw head 14 has a disassembly groove 15 at the end away from the base plate 12. The bolt head 11 has a hexagonal or octagonal structure. The polygonal structure is used to cooperate with a disassembly wrench to realize the disassembly and assembly of the screw. The disassembly groove 15 is shaped like a plum blossom. The plum blossom-shaped disassembly groove can cooperate with a specific wrench to realize the disassembly and assembly of the screw (generally used when the external polygonal structure is damaged).

[0026] The screw head 14 has a cutting tip 142 at the end away from the screw rod 13. The screw head 14 has two cutting grooves 144. The screw head 14 has a first cutting edge 141 and a second cutting edge 143 on both sides of the cutting grooves 144. The cutting tip 142 has a conical structure, which facilitates insertion. The first cutting edge 141 protrudes from the second cutting edge 143. The cutting grooves 144 are S-shaped. The first cutting edge 141 and the second cutting edge 143 are easier to insert than the screw structure. After the screw head is inserted, it is inserted through the screw rod.

[0027] The screw rod 13 is composed of a cylinder 131 and a screw rod body 132, and the washer 2 is fitted onto the cylinder 131. The washer 2 is composed of a ring 21 and a spring piece 22. There are two rings 21, and multiple spring pieces 22 are evenly distributed between the two rings 21. The washer 2 has good buffering performance, thereby improving the effect of preventing the screw from loosening.

[0028] The working principle of this utility model is as follows: the bolt head 11 is a hexagonal or octagonal structure. The polygonal structure is used to cooperate with the disassembly and assembly wrench to realize the disassembly and assembly of the screw. The disassembly and assembly groove 15 is shaped like a plum blossom. The plum blossom-shaped disassembly and assembly groove can be used with a specific wrench to realize the disassembly and assembly of the screw (generally used when the external polygonal structure is damaged).

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An improved self-tapping screw, characterized by: The device includes a self-tapping screw body (1) and a washer (2). The self-tapping screw body (1) includes a bolt head (11), a base plate (12), a screw rod (13), and a screw head (14). The screw rod (13) has a screw head (14) at one end and a base plate (12) at the other end. The base plate (12) has a bolt head (11) at the end away from the screw rod (13). The screw head (14) has a disassembly groove (15) at the end away from the base plate (12). The screw head (14) has a cutting tip (142) at the end away from the screw rod (13). The screw head (14) has two cutting grooves (144). The screw head (14) is located in the cutting grooves (144). The first blade (141) and the second blade (143) are respectively provided on both sides of the bolt; the tip (142) is a conical structure, the first blade (141) protrudes from the second blade (143), and the blade groove (144) is S-shaped; the screw rod (13) is composed of a cylinder (131) and a screw rod body (132), and the washer (2) is fitted on the cylinder (131); the washer (2) is composed of a ring (21) and a spring piece (22), there are two rings (21), and multiple spring pieces (22) are evenly distributed between the two rings (21); the bolt head (11) is a hexagonal or octagonal structure, and the disassembly groove (15) is shaped like a plum blossom.

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