Laptop positioning rotary shaft

Abstract

The invention discloses a laptop positioning rotary shaft. A rotary bracket of the laptop positioning rotary shaft further comprises a supporting part, a first shaft sleeve and a second shaft sleeve. The area, between the other end of the rotary bracket and the second shaft sleeve, of the lower end face of the rotary bracket is provided with a dove-shaped groove. Loose fin rings and tight fin rings are each provided with a notched groove. A smooth rod part of an axis rod is sleeved with the loose fin rings and the tight fin rings. Gaps are reserved between the loose fin rings and the smooth rod part, and the tail ends of the loose fin rings are in tight fit contact with the smooth rod part. The inner walls of the loose fin rings and the tight fin rings are each provided with two inward sunken grooves which are separately located in the two sides of the corresponding notched groove. The gap part of each loose fin ring communicates with the two inward sunken grooves of the corresponding loose fin ring. The loose fin rings and the tight fin rings are alternately arranged. The middle area between the smooth rod part and the unsmooth rod part of the axis rod is provided with a protruding strip. The laptop positioning rotary shaft is good in stability and uniformity of torsion and friction force, and floating of the torsion and the friction force are controlled within 7%, so that torsion attenuation is reduced, and lubrication continuity and durability between the smooth rod part and the inner walls of the fin rings are further ensured.

Description

technical field [0001] The invention relates to a positioning rotating shaft for a notebook computer, in particular to a computer positioning rotating shaft used between a liquid crystal screen board and a mainboard of a notebook computer. Background technique [0002] With the development of science and technology, various electronic products continue to appear, which bring great changes to people's lives, especially the use of computers has changed people's lifestyles and accelerated their pace of life. In the past two decades, with the development of material science and the emergence of smaller integrated chips, computers have evolved into a notebook computer that is small in size, thin in thickness, light in weight and easy to carry around. Most of the existing notebooks are of flip-top type. In order to meet the design considerations of thinness, smallness and light weight, they are generally designed to be composed of two parts: the base composed of the host body and ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the rotating shaft of a notebook computer is generally provided with an annular oil guide groove directly on the pivot of the rotating shaft, and the rotating shaft is made of zinc alloy. This design has the following disadvantages: the rotating shaft of a notebook computer with this structure has slow heat dissipation, There will be local heating, and the lubricating oil in the oil tank will be easily melted. This requires a higher melting point of the lubricating oil in the oil tank. There is an annular oil guide groove on the pivot, which is not conducive to the storage of lubricating oil. When the top cover of the laptop is closed, it may cause oil leakage. At the same time, there is an annular oil guide groove on the pivot, and it is not easy to form a uniform oil film.

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