Biaxial hinge device and electronic device

Abstract

The invention provides a biaxial hinge device having simple structure, low cost and reducing the number of parts on the basis of rotating according to a certain rotating sequence, and an electronic device having the biaxial hinge device; the biaxial hinge device connects a first frame provided with operation portions such as keyboards on the upper surface and a second frame provided with displaying portion on the lower surface in open and closing way; the device is characterized in that the biaxial hinge device comprises a hinge casing and a first shaft fixed to the end of the first frame and a second shaft fixed to the end of the second frame; the first and second shafts are separated and oppositely placed corresponding to a hinge casing and rotate along the same direction. A rotating control unit confirms rotating sequence of the shafts during opposite opening and closing for the frame bodies, and is fixed between the shafts. The rotating control unit utilizes the torque difference between a torque generated by winding one of the shafts and another torque generated by winding another shaft.

Description

technical field [0001] The invention relates to a biaxial hinge device and electronic equipment for opening and closing a first frame body and a second frame body in a certain rotation sequence. Background technique [0002] Among small electronic devices such as PDAs, notebook computers, Zaurus (trademark, Zaurus) and mobile phones, there are known devices that have a first housing with an operating unit such as a keyboard on the upper surface and a display unit such as an LCD on the lower surface. The second frame body, and the first frame body and the second frame body are connected in a manner that can be opened and closed with each other through a hinge device. The electronic device is configured by using a hinge device such that the upper end of the second frame is rotatably connected to the upper end of the first frame through the hinge device, so that the lower surface of the second frame including the display part can be rotatably connected. It overlaps with the up...

AI Technical Summary

Problems solved by technology

However, since the first hinge and the second hinge are respectively composed of a fixed part, a hinge shaft, a rotating part, a movable part, a coil spring, a ball, and an engaging recess, there are problems of a large number of parts, a complex structure, and an increase in cost.

[0007] In addition, in the biaxial hinge device described in Patent Document 2, the first frame body and the second frame body are rotatably connected by the first hinge and the second hinge, but there is no description of making the second frame body relative to The detailed structure that the rotation of the first frame body is performed in a certain rotation sequence when opening and closing, for example, although it is proposed that the rotation action is carried out in a certain rotation sequence, the first frame body and the second frame body are respectively provided. However, in addition to the biaxial hinge device, the scheme of the engaging part requires a structure for providing the engaging part on the first frame body and the second frame body, and a device for manufacturing the structure, and there is a structure complex and costly problems

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