A kind of triangular thread screw and its design method
A triangular and threaded technology, applied in the direction of screws, threaded fasteners, bolts, etc., can solve the problem of not meeting the requirement of 1 million times of durability test, and achieve the effect of strong tightness, stable quality and long service life
Active Publication Date: 2021-08-06
惠州卓越紧固系统有限公司
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problem that the existing triangular threaded screw has only 400,000 to 600,000 times of durability test using the BIFMA standard, which cannot meet the requirement of 1 million times of the BIFMA standard durability test.
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[0031] The technical solutions in the embodiments of the present invention will be apparent from the drawings in the embodiment of the present invention. Obviously, the described embodiments are merely the embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art will belong to the scope of the present invention without all other embodiments obtained without creative labor.
[0032] like Figure 1 to 4 As shown, a triangular thread screw comprising a screw head 1, a screw rod 2, a screw tail 3, a screw head 1 is a hemispherical shape, and a hexagonal groove 4 is provided in the top of the hemispherical shape, and the screw rod 2 is uniformly spaced on the screw rod 2. The triangular thread 5, the three sides of the triangular thread 5 expecting the outer arc shape, the cross section of the screw rod 2 is a triangle, and the triangular three sides are outside the arc, the screw tail 3 is inverted. ...
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A triangular thread screw of the present invention comprises a screw head, a screw shank, and a screw tail. The cross-section is triangular, and the screw tail is inverted trapezoidal. The outer diameter of the screw head is 15.0mm, the height of the screw head is 4.5mm, and the depth of the inner hexagonal groove is at least 2.35mm. The thread angle of the triangular thread is 60°. For the triangular thread screw of this scheme, the parameters and ranges of the triangular thread root diameter inscribed circle diameter, triangular thread root diameter radius, triangular thread inscribed circle diameter, and triangular thread circumscribed circle diameter are designed reasonably, ensuring that the triangular thread screw product , meet the American national standard of international office furniture, the durability test is 1 million times, the quality is stable, the fastening is strong, and the service life is long.
Description
Technical field [0001] The present invention relates to the field of screw production, and more particularly to a triangular thread screw and a design method. Background technique [0002] Triangular threaded self-tapping screws, commonly used in thin iron plates, foundrs, hard plastic connectivity, triangular threaded self-tapping screws, unique approximate triangular externally contours and front ends are used to position chamfered, similar to taps for teeth The connections can be automatically saved without the need for the bottom thread, and provides better anti-loosening and anti-vibration effects, reducing assembly time, reducing direct costs, better connection effect, so being loved by users. [0003] Existing triangular thread screws have the following flaws: [0004] (1) Press GB6559-86 self-attack lock screw standard, using BIFMA (full name Business Andositional Furniture Manufacture) standard for durable testing, actually 40-600,000; [0005] (2) No 200,000 demand for ...
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IPC IPC(8): F16B35/06F16B35/04F16B33/02
CPCF16B33/02F16B35/041F16B35/06
Inventor 梁伟明陈广福宋俊伟
Owner 惠州卓越紧固系统有限公司