Drilling screw for steel structure
A technology of drilling tail screws and steel structures, which is applied in the direction of screws, nuts, bolts, etc., which can solve the problems of reduced service life and easy rust, and achieve the effect of improving service life and ensuring stable working performance
Active Publication Date: 2017-11-10
HAIYAN NEW SHENGDA FASTENER
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Problems solved by technology
[0002] Some steel plates used in house construction often use drilling screws as connecting fasteners, but the drilling screws used in today's buildings are mainly used for fixing steel structures or for fixing thin plates for simple buildings. Particularity, there is also a special use requirement, which cannot be met by traditional drilling screws. Sometimes the drilling screws that need to be connected must have the function of sealing and waterproofing, while ensuring stable working performance and sufficient strength. These are not ordinary drilling screws. What can be satisfied, and ordinary drill tail screws are easy to rust in the wading environment, which reduces the service life
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[0022] refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , a kind of drill tail screw for steel structure of the present invention, comprises screw 1, steel sheet 2 and waterproof pad 3, and described screw 1 is provided with screw cap 11, screw rod 12, screw head 13 and screw tooth 14, and described screw The cap 11 is located above the screw teeth 14, the screw teeth 14 are located above the screw rod 12, the screw rod 12 is located above the screw head 13, the screw cap 11 is provided with a flat groove 111 and a cap edge 112, and the bottom of the cap flange 112 is provided with The ring surface 113 and the arc surface 114, the screw rod 12 is provided with tooth lines 121, the bottom of the screw head 13 is provided with a slanted point 131, the steel sheet 2 is installed under the screw cap 11, and the steel sheet 2 is provided with Through hole 21, boss 22, plate surface 23, inclined surface 24 and fo...
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The invention discloses a self-drilling screw for a steel structure. The self-drilling screw for the steel structure comprises a screw body, a steel sheet and a waterproof pad. The screw body is provided with a screw cap, a screw rod, a screw head and screw teeth. The screw cap is located above the screw teeth. The screw teeth are located above the screw rod. The screw rod is located above the screw head. Flat grooves and screw cap edges are arranged on the screw cap. The screw cap edges are not provided with ring faces or arc-shaped faces. A thread is arranged on the screw rod. An inclined point is arranged at the lower portion of the screw head. The steel sheet is installed below the screw cap and provided with a through hole, a boss, a panel, slopes and panel pins. The through hole and the screw rod are coaxially matched. The upper end of the waterproof pad is attached to the lower end of the steel sheet. An axial hole and the screw rod are coaxially matched. Due to the fact that the screw cap is provided with the flat grooves and the screw cap edges, the steel sheet is installed below the screw cap, the upper end of the waterproof pad is attached to the lower end of the steel sheet, and the axial hole and the screw rod are coaxially matched, the strength of the self-drilling screw is high enough, the waterproof function is achieved, the stable work performance of the self-drilling screw is guaranteed, and the service life is prolonged.
Description
【Technical field】 [0001] The invention relates to the technical field of screws, in particular to the technical field of drill tail screws for steel structures. 【Background technique】 [0002] Some steel plates used in house construction often use drilling screws as connecting fasteners, but the drilling screws used in today's buildings are mainly used for fixing steel structures or for fixing thin plates for simple buildings. Particularity, there is also a special use requirement, which cannot be met by traditional drilling screws. Sometimes the drilling screws that need to be connected must have the function of sealing and waterproofing, while ensuring stable working performance and sufficient strength. These are not ordinary drilling screws. What can be satisfied, and the ordinary drill tail screw is easy to rust in the wading environment, which reduces the service life. 【Content of invention】 [0003] The purpose of the present invention is to solve the problems in th...
Claims
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IPC IPC(8): F16B25/04F16B41/00
Inventor 王峰伟
Owner HAIYAN NEW SHENGDA FASTENER