Positioning hinge having a cam block
First Claim
1. A positioning hinge for pivoting between a main unit and an LCD display of a portable computer or an electronic dictionary, the hinge comprising:
- a pivotal member having a mounting end for mounting the hinge to the main unit, and a rotary shaft having a pivotal axis;
a substantially disk-shaped cam block being eccentrically and non-rotatably provided around the rotary shaft of the pivotal member;
a pivotal base having a mounting end for mounting the hinge to the LCD display, and a support through which the rotary shaft passes;
the pivotal base being provided with a resilient friction member resiliently urging against the cam block, wherein the pivotal base is rotatable between a first position and a second position about the pivotal member; and
a torsion spring being biasedly provided around the rotary shaft in relation to the pivotal member, wherein the torsion spring is under torsion state when the pivotal base is at the first position, and under relaxed state when the pivotal base is at the second position.
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Accused Products
Abstract
Disclosed is a positioning hinge for use in a portable computer or an electronic dictionary having a main unit and an LCD display, the hinge comprising a pivotal member for mounting the hinge to the main unit; a substantially disk-shaped cam block non-rotatably provided around the pivotal member; a pivotal base rotatably for mounting the hinge to the LCD display. By biasing against the cam block, this invention allows the LCD display of a portable computer to pivot with respect to the main unit so as to adjust the orientation of the LCD display e. This invention can be simply assembled, includes a low number of components, and is of a relatively compact size.
84 Citations
35 Claims
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1. A positioning hinge for pivoting between a main unit and an LCD display of a portable computer or an electronic dictionary, the hinge comprising:
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a pivotal member having a mounting end for mounting the hinge to the main unit, and a rotary shaft having a pivotal axis; a substantially disk-shaped cam block being eccentrically and non-rotatably provided around the rotary shaft of the pivotal member; a pivotal base having a mounting end for mounting the hinge to the LCD display, and a support through which the rotary shaft passes;
the pivotal base being provided with a resilient friction member resiliently urging against the cam block, wherein the pivotal base is rotatable between a first position and a second position about the pivotal member; anda torsion spring being biasedly provided around the rotary shaft in relation to the pivotal member, wherein the torsion spring is under torsion state when the pivotal base is at the first position, and under relaxed state when the pivotal base is at the second position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A positioning hinge for pivoting between a main unit and an LCD display of a portable computer or an electronic dictionary, the hinge comprising:
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a pivotal member having a mounting end for mounting the hinge to the main unit, and a rotary shaft formed with a pivotal axis; a substantially disk-shaped cam block having a peripheral wall and, being eccentrically provided around the rotary shaft of the pivotal member; a pivotal base having a mounting end for mounting the hinge to the LCD display;
a support being formed with a substantially circular opening for rotatably receiving the rotary shaft of the pivotal member; and
a medial portion being formed with an ear projecting towards the cam block, wherein the pivotal base is rotatable between a first position and a second position about the pivotal axis of the pivotal member;a resilient friction member having a mounting end for mounting the resilient friction member on the ear, and a resilient end for resiliently urging against the peripheral wall of the cam block; a non-rotatable washer being formed with an oblate opening having a top flatten edge and a bottom flatten edge for non-rotatably providing the non-rotatable washer on the rotary shaft of the pivotal member; and a torsion spring being biasedly provided around the rotary shaft of the pivotal member in relation to the pivotal member, the torsion spring having a first end for mounting on the non-rotatable washer, and a second end for mounting on the pivotal base; wherein the torsion spring is under torsion state when the pivotal base is at the first position, and under relaxed state when the pivotal base is at the second position. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A positioning hinge for pivoting between a main unit and an LCD display of a portable computer or an electronic dictionary, the hinge comprising:
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a pivotal member having a pivotal axis, a mounting end for mounting the hinge to the main unit;
a non-threaded portion; and
a threaded portion, wherein the non-threaded portion is located between the mounting end and the threaded portion;a substantially disk-shaped cam block having a center and a peripheral wall; the cam block being formed with an eccentric semi-circular opening having a center for non-rotatably mounting the cam block on the non-threaded portion of the pivotal member; a pivotal base having a mounting end for mounting the hinge to the LCD display;
a support being formed with a substantially circular opening for rotably receiving the non-threaded portion of the pivotal member; and
a medial portion being formed with an ear projecting towards the cam block, wherein the pivotal base is rotatable between a first position and a second position about the pivotal axis of the pivotal member;a resilient friction member having a mounting end for mounting the resilient friction member on the ear, and a resilient end for resiliently urging against the peripheral wall of the cam block; a non-rotatable washer being formed with an oblate opening having a top flatten edge and a bottom flatten edge for non-rotatably receiving the threaded portion of the pivotal member; and a torsion spring being biasedly provided around the threaded-portion of the pivotal member and between the pivotal base and the non-rotatable washer, the torsion spring having a first end for mounting on the non-rotatable washer, and a second end for mounting on the pivotal base; wherein the torsion spring is under torsion state when the pivotal base is at the first position, and under relaxed state when the pivotal base is at the second position. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A positioning hinge for pivoting between a main unit and an LCD display of a portable computer or an electronic dictionary, the hinge comprising:
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a pivotal member having a mounting end for mounting the pivotal member to the main unit, and a rotary shaft having a pivotal axis; a pivotal base having a mounting end for mounting the pivotal base to the LCD display, and a first support that is substantially perpendicular to the rotary shaft of the pivotal member and is formed with a pivotal opening through which the rotary shaft passes; a torsion spring provided around the rotary shaft and having a first end and a second end that respectively urge against and connect to the pivotal member and pivotal base to provide torsion force for relative rotation between the pivotal member and the pivotal base; a cam block substantially in a disk shape and having a cam-configured surface and is formed with a through hole, through which the rotary shaft of the pivotal member non-rotatably passes; resilient friction member including a mounting end that is secured to the pivotal base and a friction end that biases against the cam-configured surface so as to maintain frictional, sliding movement with the cam block; wherein the pivotal member, pivotal base, torsion spring, cam block, and resilient friction member are secured to the rotary shaft from a free end of the rotary shaft. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification