Over-point automatic starting rotating shaft

Abstract

The invention discloses an over-point automatic starting rotating shaft including a fixed plate, a movable plate, a rotating shaft, a cam wheel, a recessed wheel, an elastic element and a resistance providing device. A first shaft sleeve is arranged on the fixed plate, a second shaft sleeve is arranged on the movable plate, and each of the first shaft sleeve, the second shaft sleeve, the cam wheeland the recessed wheel axially and slidably sleeves the outer side of the rotating shaft. Stop members at two ends of the rotating shaft abut against two axial ends of an integral stacked structure formed by the first shaft sleeve, the second shaft sleeve, the cam wheel and the recessed wheel, the second shaft sleeve is capable of rotating relative to the rotating shaft, one of the cam wheel andthe recessed wheel is stopped and positioned in a circumferential direction of the second shaft sleeve, and the cam wheel and the recessed wheel are in tight contact through an axial concave-convex curved surface. The resistance providing device is capable of providing resistance for rotation of the second shaft sleeve. The elastic element is capable of providing an elastic torsion force for the second shaft sleeve within a set angle range, wherein the elastic torsion force enables the movable plate to rotate in a direction away from an opening direction of the fixed plate. By using the over-point automatic starting rotating shaft, a display screen can be stably closed, and the display screen of a notebook computer can automatically bounce when being opened so as to be convenient to use.

Description

technical field [0001] The invention relates to a rotating shaft for opening and closing hinges, in particular to an automatic starting and rotating shaft after passing a point. Background technique [0002] In the opening and closing structure of notebook computers, the display screen and the main body are connected together through a rotating shaft. A movable piece is set on the display screen, and a fixed piece is set on the main body. The opening and closing of the display piece is realized by rotating the movable piece. When the display is turned on, it is always opened with a constant force, and when it is closed, it is also closed with a constant force. The opening speed is slow and the hand feel is not good. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a cross-point automatic start-and-rotation shaft, which can realize the fast and easy opening of the display screen and stable closing. [0004]...

AI Technical Summary

Problems solved by technology

[0002] In the opening and closing structure of notebook computers, the display screen and the main body are connected together through a rotating shaft. A movable piece is set on the display screen, and a fixed piece is set on the main body. The opening and closing of the display piece is realized by rotating the movable piece. When the display is turned on, it is opened with constant force, and when closed, it is also closed with constant force. The opening speed is slow and the hand feel is not good.

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