초록 ▼

A hinge module is disposed between a first body and a second body. A first bracket is fixed on the first body to fix a shaft. A second bracket is fixed on the second body and passed through by the shaft, so that the second bracket can be rotated relative to the first bracket. An electromagnet is ins

A hinge module is disposed between a first body and a second body. A first bracket is fixed on the first body to fix a shaft. A second bracket is fixed on the second body and passed through by the shaft, so that the second bracket can be rotated relative to the first bracket. An electromagnet is installed on the shaft. A magnetic element is installed on the shaft, and capable of being attracted or repelled with the electromagnet. At least one of the electromagnet and the magnetic element is capable of being moved along the shaft axially but substantially incapable of being rotated with the shaft as an axis. When the electromagnet is activated, at least one of the electromagnet and the magnetic element is axially moved to press the second bracket to increase a torque of a rotation of the second bracket relative to the first bracket.

대표청구항 ▼

1. A hinge module adapted to be disposed between a first body and a second body to facilitate in rotating the second body relative to the first body, and the hinge module comprises: a shaft;a first bracket fixed on the first body and fixedly supporting the shaft;a second bracket fixed on the second

1. A hinge module adapted to be disposed between a first body and a second body to facilitate in rotating the second body relative to the first body, and the hinge module comprises: a shaft;a first bracket fixed on the first body and fixedly supporting the shaft;a second bracket fixed on the second body and rotatably passed through by the shaft, for rotating the second bracket relative to the first bracket;an electromagnet directly or indirectly installed on the shaft; anda magnetic element directly or indirectly installed on the shaft, and attracted to or repelled by the electromagnet under the magnetic force of the electromagnet;wherein at least one of the electromagnet and the magnetic element is movable axially along the shaft but not rotatable with the shaft as an axis, and in response to the force of the electromagnet being activated by electric power, at least one of the electromagnet and the magnetic element is moved axially to a first position and presses the second bracket to increase a rotational friction, and thereby a torsion required for a rotation of the second bracket relative to the first bracket is increased,wherein the second bracket has a bearing to be passed through by the shaft, the bearing includes a first lateral side and a second lateral side opposite to each other, the electromagnet is installed adjacent to the first lateral side and incapable of being moved axially, the magnetic element is installed on the shaft adjacent to the second lateral side and capable of being moved axially, and the electromagnet generates a magnetic attraction force to attract the magnetic element so as to move the magnetic element to the first position to press the second lateral side of the bearing. 2. A hinge module adapted to be disposed between a first body and a second body to facilitate in rotating the second body relative to the first body, and the hinge module comprises: a shaft;a first bracket fixed on the first body and to fixedly supporting the shaft;a second bracket fixed on the second body and rotatably passed through by the shaft, for rotating the second bracket relative to the first bracket;an electromagnet directly or indirectly installed on the shaft; anda magnetic element directly or indirectly installed on the shaft, and attracted to or repelled by the electromagnet under the magnetic force of the electromagnet;wherein at least one of the electromagnet and the magnetic element is movable axially along the shaft but not rotatable with the shaft as an axis, and in response to the force of the electromagnet being activated by electric power, at least one of the electromagnet and the magnetic element is moved axially to a first position and presses the second bracket to increase a rotational friction, and thereby a torsion required for a rotation of the second bracket relative to the first bracket is increased,wherein the second bracket has a bearing rotatably passed through by the shaft, the bearing includes a first lateral side and a second lateral side opposite to each other, the electromagnet is installed adjacent to the first lateral side and incapable of being moved axially, the magnetic element is installed on the shaft and between the electromagnet and the second bracket and capable of being moved axially, and the electromagnet generates a magnetic repulsion force to repel the magnetic element so as to move the magnetic element to the first position to press the first lateral side of the bearing. 3. The hinge module of claim 1, further comprising: a restraint element capable of generating a magnetic attraction force with the magnetic element, which is fixed on the shaft and spaced apart from the bearing by a distance greater than a thickness of the magnetic element, so that the magnetic element is capable of being moved axially between the bearing and the restraint element, and magnetically attached to the restraint element without touching the bearing in case the electromagnet is not working. 4. The hinge module of claim 3, further comprising: a spacer fixed on the shaft and sandwiched between the bearing and the restraint element so the magnetic element is capable being moved axially on the spacer. 5. The hinge module of claim 1, further comprising: a bearing located on the second bracket, and passed through by the shaft; andan elastic piece tube telescoped on the shaft and maintained in pressing at least one side of the bearing, so as to generate a basic torsion of the rotation of second bracket relative to the first bracket. 6. The hinge module of claim 4, wherein the magnetic element has an inner bevel surface, and an outer bevel surface formed on the spacer or the shaft within a range of axial movement of the magnetic element, so that the magnetic element is capable of being moved axially when the magnetic element is restricted from rotating with the shaft as the axis after being installed on the spacer or the shaft. 7. The hinge module of claim 1, further comprising an angle detector adapted to detect an included angle between the second bracket and the first bracket. 8. The hinge module of claim 7, wherein the angle detector includes a variable resistor, and the variable resistor further includes a fixing element and a movable element, the fixing element is directly and indirectly fixed on the shaft, and the movable element is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket, so that the included angle between the second bracket and the first bracket is correspondingly obtained through a variation of resistance values obtained when rotating the movable element relative to the fixing element. 9. The hinge module of claim 7, wherein the angle detector includes a triggering member, and the triggering member further includes a triggering cam and a triggering switch capable of driving the electromagnet, the triggering cam is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket in relative to the shaft, and the triggering switch is fixed on a rotation path of the triggering cam, so that the second bracket is touched and pressed by the triggering cam when rotating the second bracket relative to the first bracket to a preset angle, thereby driving the electromagnet. 10. The hinge module of claim 1, wherein the electromagnet is controlled by a control command, and the control command includes at least one of commands for driving the electromagnet, controlling a current size, or altering a magnetic field direction of the electromagnet. 11. A foldable device, comprising: a first body;a second body; anda hinge module disposed between the first body and the second body to facilitate rotation of the second body relative to the first body, and the hinge module comprises:a shaft;a first bracket fixed on the first body and fixedly supporting the shaft;a second bracket fixed on the second body and rotatably passed through by the shaft, for rotating the second bracket relative to the first bracket;an electromagnet directly or indirectly installed on the shaft; anda magnetic element directly or indirectly installed on the shaft, and attracted or repelled with the electromagnet under the magnetic force of the electromagnet;wherein at least one of the electromagnet and the magnetic element is movable axially along the shaft but not rotatable with the shaft as an axis, and in response to the force of the electromagnet activated by electric power, at least one of the electromagnet and the magnetic element is moved axially to a first position and presses the second bracket to increase a rotational friction, thereby a torsion required for a rotation of the second bracket relative to the first bracket is increased,wherein the second bracket has a bearing to be passed through by the shaft, the bearing includes a first lateral side and a second lateral side opposite to each other, the electromagnet is installed adjacent to the first lateral side and incapable of being moved axially, the magnetic element is installed on the shaft adjacent to the second lateral side and capable of being moved axially; and the electromagnet generates a magnetic attraction force to attract the magnetic element so as to move the magnetic element to the first position to press the second lateral side of the bearing. 12. A foldable device, comprising: a first body;a second body; anda hinge module disposed between the first body and the second body to facilitate rotation of the second body relative to the first body, and the hinge module comprises:a shaft;a first bracket fixed on the first body and fixedly supporting the shaft;a second bracket fixed on the second body and rotatably passed through by the shaft, for rotating the second bracket relative to the first bracket;an electromagnet directly or indirectly installed on the shaft; anda magnetic element directly or indirectly installed on the shaft, and attracted or repelled with the electromagnet under the magnetic force of the electromagnet;wherein at least one of the electromagnet and the magnetic element is movable axially along the shaft but not rotatable with the shaft as an axis, and in response to the force of the electromagnet activated by electric power, at least one of the electromagnet and the magnetic element is moved axially to a first position presses the second bracket to increase a rotational friction, thereby a torsion required for a rotation of the second bracket relative to the first bracket is increased,wherein the second bracket has a bearing to be passed through by the shaft, the bearing includes a first lateral side and a second lateral side opposite to each other, the electromagnet is installed adjacent to the first lateral side and incapable of being moved axially, the magnetic element is installed on the shaft adjacent to the second lateral side and capable of being moved axially; and the electromagnet generates a magnetic repulsion force to repel the magnetic element so as to move the magnetic element to the first position to press the first lateral side of the bearing. 13. The foldable device of claim 11, further comprising: a restraint element capable of generating a magnetic suction force with the magnetic element, which is fixed on the shaft and spaced apart from the bearing with a distance greater than a thickness of the magnetic element, so that the magnetic element is capable of being moved axially between the bearing and the restraint element, and magnetically attached to the restraint element without touching the bearing in case the electromagnet is not working. 14. The foldable device of claim 13, further comprising: a spacer fixed on the shaft and sandwiched between the bearing and the restraint element so the magnetic element is capable being moved axially on the spacer. 15. The foldable device of claim 11, further comprising: a bearing located on the second bracket, and passed through by the shaft; andan elastic piece tube telescoped on the shaft and maintained in pressing at least one side of the bearing, so as to generate a basic torsion of the rotation of second bracket relative to the first bracket. 16. The foldable device of claim 14, wherein the magnetic element has an inner bevel surface, and an outer bevel surface formed on the spacer or the shaft within a range of axial movement of the magnetic element, so that the magnetic element is capable of being moved axially when the magnetic element is restricted from rotating with the shaft as the axis after being installed on the spacer or the shaft. 17. The foldable device of claim 11, further comprising an angle detector adapted to detect an included angle between the second bracket and the first bracket. 18. The foldable device of claim 17, wherein the angle detector includes a variable resistor, and the variable resistor further includes a fixing element and a movable element, the fixing element is directly and indirectly fixed on the shaft, and the movable element is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket, so that the included angle between the second bracket and the first bracket is correspondingly obtained through a variation of resistance values obtained when rotating the movable element relative to the fixing element. 19. The foldable device of claim 17, wherein the angle detector includes a triggering member, and the triggering member further includes a triggering cam and a triggering switch capable of driving the electromagnet, the triggering cam is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket in relative to the shaft, and the triggering switch is fixed on a rotation path of the triggering cam, so that the second bracket is touched and pressed by the triggering cam when rotating the second bracket relative to the first bracket to a preset angle, thereby driving the electromagnet. 20. The foldable device of claim 11, wherein the electromagnet is controlled by a control command, and the control command includes at least one of commands for driving the electromagnet, controlling a current size, or altering a magnetic field direction of the electromagnet. 21. The foldable device of claim 11, wherein the first body is a host base of a notebook computer, and the second body is a display of the notebook computer. 22. The hinge module of claim 2, further comprising: a bearing located on the second bracket, and passed through by the shaft; andan elastic piece tube telescoped on the shaft and maintained in pressing at least one side of the bearing, so as to generate a basic torsion of the rotation of second bracket relative to the first bracket. 23. The hinge module of claim 2, further comprising an angle detector adapted to detect an included angle between the second bracket and the first bracket. 24. The hinge module of claim 23, wherein the angle detector includes a variable resistor, and the variable resistor further includes a fixing element and a movable element, the fixing element is directly and indirectly fixed on the shaft, and the movable element is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket, so that the included angle between the second bracket and the first bracket is correspondingly obtained through a variation of resistance values obtained when rotating the movable element relative to the fixing element. 25. The hinge module of claim 23, wherein the angle detector includes a triggering member, and the triggering member further includes a triggering cam and a triggering switch capable of driving the electromagnet, the triggering cam is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket in relative to the shaft, and the triggering switch is fixed on a rotation path of the triggering cam, so that the second bracket is touched and pressed by the triggering cam when rotating the second bracket relative to the first bracket to a preset angle, thereby driving the electromagnet. 26. The hinge module of claim 2, wherein the electromagnet is controlled by a control command, and the control command includes at least one of commands for driving the electromagnet, controlling a current size, or altering a magnetic field direction of the electromagnet. 27. The foldable device of claim 12, further comprising: a bearing located on the second bracket, and passed through by the shaft; andan elastic piece tube telescoped on the shaft and maintained in pressing at least one side of the bearing, so as to generate a basic torsion of the rotation of second bracket relative to the first bracket. 28. The foldable device of claim 12, further comprising an angle detector adapted to detect an included angle between the second bracket and the first bracket. 29. The foldable device of claim 28, wherein the angle detector includes a variable resistor, and the variable resistor further includes a fixing element and a movable element, the fixing element is directly and indirectly fixed on the shaft, and the movable element is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket, so that the included angle between the second bracket and the first bracket is correspondingly obtained through a variation of resistance values obtained when rotating the movable element relative to the fixing element. 30. The foldable device of claim 28, wherein the angle detector includes a triggering member, and the triggering member further includes a triggering cam and a triggering switch capable of driving the electromagnet, the triggering cam is directly or indirectly fixed on the second bracket so as to be rotated synchronously with the second bracket in relative to the shaft, and the triggering switch is fixed on a rotation path of the triggering cam, so that the second bracket is touched and pressed by the triggering cam when rotating the second bracket relative to the first bracket to a preset angle, thereby driving the electromagnet. 31. The foldable device of claim 12, wherein the electromagnet is controlled by a control command, and the control command includes at least one of commands for driving the electromagnet, controlling a current size, or altering a magnetic field direction of the electromagnet. 32. The foldable device of claim 12, wherein the first body is a host base of a notebook computer, and the second body is a display of the notebook computer.