Waterproof combined tapping screw

A self-tapping screw and screw technology, 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, etc., to achieve good repeatability, improve pressure relief, and increase stability Effect

Active Publication Date: 2016-06-22
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 combined tapping screw
  • Waterproof combined tapping screw
  • Waterproof combined 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 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 axi...

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PUM

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Abstract

The invention discloses a waterproof combined self-tapping screw, which includes a screw head, a screw rod and a thread. A silicone gasket is provided at the neck where the screw head and the screw rod are connected. The contact surface, and the second contact surface near the head of the self-tapping screw, form a profile angle between the first contact surface and the second contact surface, and the profile angle is 15°-45°; the thread The root of the first contact surface is connected to the axial direction of the screw through an arc-shaped transition section; the root of the second contact surface of the thread is directly connected to the axial direction of the screw, and the two straight lines meet to form an obtuse angle. A silicone gasket is assembled on the neck of the screw head and the screw rod, and when the self-tapping screw is completely locked into the connection material, it has a waterproof sealing effect; an arc-shaped transition section is added on the first contact surface side of the screw teeth, and the second of the screw teeth The contact surface side maintains its straight line connection and forms an obtuse angle to achieve the self-tapping effect of "easy to enter and difficult to exit" when self-tapping screws are locked in.

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, the English name is Self-tapping Screw, which is a threaded fastener that taps and drills the mating female thread in the pre-drilled hole of metal or non-metallic materials. 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 placed on the wat...

Claims

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Application Information

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