Hinge device and electronic device comprising same

Abstract

The invention provides a hinge device which is prepared from an alloy by a metal injection molding method and has high strength, is nonmagnetic and has corrosion resistance. The alloy comprises the following components in percentage by weight: 4-32% of Mn, 16-37% of Cr, 0-14% of Ni, 0-4.5% of Si, 0.2-1% of N, 0-0.2% of C, 0-0.5% of S, 0-0.5% of P, 0-1% of Al, 0-5% of Co, 0-4% of Ti, 0-2% of Cu, 0-0.5% of V, 0-5% of W, 0-5% of Mo, 0-1% of B, 0-0.4% of O, 0-2% of Nb, 0-1% of Ta, less than 5% of total additive amount of an adding element, wherein the adding element is selected from at least one of Y, La, Ce, Hf and Zr, and the balance of the alloy of Fe.

Description

technical field [0001] The invention relates to a hub and an electronic device equipped with the hub. Background technique [0002] Existing mobile electronic devices, such as notebook computers, mobile phones or PDAs, mainly have two parts, a base and a display screen, and a hinge is arranged between the base and the screen, so that the screens and the base that are superimposed on each other form a It can be opened and closed, and the opening and closing methods can include sliding type, flip type, or those with both sliding and flipping functions according to the design of the hinge device. The hinge device used in the sliding flip type electronic device mainly includes: a pivot A piece, its two ends are respectively provided with a sliding groove and a pivoting part, and the pivoting part is pivoted on the body of the electronic device with the pivoting part so as to be able to turn over relative to the body; and a slide plate, which is fixed on the electronic device On...

AI Technical Summary

Problems solved by technology

[0011] The hinge of the present invention has the weight percentage of Ni and Cr in its composition totaling more than 12%, so it has the properties of stainless steel, its yield strength is more than 350MPa, its tensile strength is higher than 700MPa, its elongation is higher than 10%, and its hardness is higher than 10%. Higher than HRB90, and the saturation magnetic flux density is lower than 10.0 Gauss (non-magnetic stainless steel range) (under the 5000Oe induced magnetic field test), the strength is higher than that of commonly used non-magnetic stainless steel and zinc alloy, and the hardness is lower than that of amorphous metal materials Therefore, the hinge device of the present invention can not only provide better strength and hardness of non-magnetic stainless steel, but also solve the disadvantages of easy wear of zinc alloy parts and the difficulty of processing parts made of amorphous metals due to their high hardness. question

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