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Waterproof combination self-tapping screw

A self-tapping screw and screw technology, which is applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems of not taking into account the improvement of the waterproof performance of self-tapping screws, achieve good repeatability, improve tensile strength, and increase stability sexual effect

Active Publication Date: 2019-01-01
SUMSUN FASTENERS SYST SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is no solution to improve the waterproof performance of self-tapping screws

Method used

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  • Waterproof combination self-tapping screw
  • Waterproof combination self-tapping screw
  • Waterproof combination self-tapping screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Please refer to the attached figure 1 with 2 , the waterproof combination self-tapping screw of this embodiment includes:

[0039] screw head 1, located at the head of the self-tapping screw;

[0040] The screw rod 2 is connected with the screw head 1 and is located at the tail of the self-tapping screw;

[0041] The thread 3 is arranged on the circumference of the screw 2;

[0042] Silicone gasket (not shown), arranged on the neck position where the screw head 1 and the screw rod 2 are connected, for waterproofing; and

[0043] The flat gasket 5 is arranged at the neck position where the screw head 1 and the screw rod 2 are connected, and is close to the side of the screw head 1; the screw head 1, the flat gasket 5 and the silicone gasket (not shown) are sequentially connected;

[0044] The thread 3 includes a first contact surface 6 near the tail of the self-tapping screw, and a second contact surface 7 near the head of the self-tapping screw.

[0045] A profile ...

Embodiment 2

[0055] Please refer to the attached Figures 3 to 5 , the waterproof combination self-tapping screw of this embodiment includes:

[0056] screw head 1, located at the head of the self-tapping screw;

[0057] The screw rod 2 is connected with the screw head 1 and is located at the tail of the self-tapping screw; the tail of the screw rod is tapered to facilitate self-tapping;

[0058] The thread 3 is arranged on the circumference of the screw rod 2;

[0059] Silicone gasket 4 is arranged at the neck position where the screw head 1 and the screw rod 2 are connected, and is used for waterproofing; and

[0060] The flat gasket 5 is arranged at the neck position where the screw head 1 and the screw rod 2 are connected, and is close to the side of the screw head 1; the screw head 1, the flat gasket 5 and the silicone gasket 4 are sequentially connected;

[0061] The screw head 1 is provided with a mounting hole 9, and the axis line of the mounting hole 9 deviates from the central...

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Abstract

The invention discloses a waterproof combined tapping screw. The waterproof combined tapping screw comprises a screw head, a screw rod and screw teeth. A silica gel washer is arranged at the neck where the screw head is connected with the screw rod. Each screw tooth comprises a first contact face located on the side close to the tail of the tapping screw and a second contact face located on the side close to the head of the tapping screw, a tooth-shaped angle is formed between each first contact face and the corresponding second contact face and ranges from 15 degrees to 45 degrees. The root of the first contact face of each screw tooth is axially connected with the screw rod through an arc-shaped transition section, the root of the second contact face of each screw tooth is directly and axially connected with the screw rod, and the root of the first contact face and the root of the second contact face linearly intersect to form an obtuse angle. The silica gel washer is arranged at the connecting neck of the screw head and the screw rod, and the waterproof sealing effect is achieved when the tapping screw is totally locked in a connecting material; and the arc-shaped transition sections are added on the first contact faces of the screw teeth, line connection of the second contact faces of the screw teeth are maintained, and the obtuse angles are formed, so that the tapping effect that the tapping screw can be tapped in easily and is not liable to be pulled out during tapping screw locking is achieved.

Description

technical field [0001] The invention relates to the technical field of self-tapping screws, and particularly discloses a waterproof combined self-tapping screw. Background technique [0002] Self-tapping screw, English name Self-tapping Screw, is a kind of threaded fastener that is self-tapping and drilling out the matching female thread in the pre-drilled hole of metal or non-metallic material. Self-tapping screws are mostly used for the connection between thin metal plates (steel plates, saw boards, etc.). When connecting, first make a threaded bottom hole for the connected part, and then screw the self-tapping screw into the threaded bottom hole of the connected part. Since the thread surface of the self-tapping screw has a high hardness (≥45HRC), the internal thread can be tapped in the threaded bottom hole of the connected part to form a connection. [0003] With the wide range of use, especially in outdoor or even underwater environments, higher requirements are plac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B25/00
Inventor 高元赞
Owner SUMSUN FASTENERS SYST SHENZHEN CO LTD
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