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A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a spindle with a non-circular cross-section and the relative movement resulting from the movable components disposed on the spindle, such t

A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a spindle with a non-circular cross-section and the relative movement resulting from the movable components disposed on the spindle, such that one of the body portions of the portable electrical device automatically tilts in an angle after the body portions slides with each other. The user could further adjust the angle to meet various use conditions.

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1. A multi-staged hinge assembly, comprising: a spindle having a first portion and a second portion;an elastic device being disposed on the first portion and adapted to provide an axial thrust towards the second portion;a first movable component comprising a first inner periphery to define a first a

1. A multi-staged hinge assembly, comprising: a spindle having a first portion and a second portion;an elastic device being disposed on the first portion and adapted to provide an axial thrust towards the second portion;a first movable component comprising a first inner periphery to define a first axial hole for the first movable component to be penetrated through the second portion of the spindle;a second movable component comprising a second inner periphery to define a second axial hole for the second movable component to be penetrated through the second portion of the spindle, in which the second movable component is adjacent to the first movable component and opposite to the elastic device; anda third movable component comprising a third axial hole for the third movable component to be penetrated through the second portion of the spindle and to be connected with an end of the second movable component, in which the end is opposite to the other end of the second movable component abutting against the first movable component; wherein the spindle has a non-circular cross-section, in which the first inner periphery has a shape corresponding to the non-circular cross-section, the second inner periphery is circular, and the third axial hole has a cross-section which is circular, therefore, the first movable component is adapted to travel in a non-rotating displacement toward a direction away from the first portion when the first movable component is subjected to the axial thrust, while the second movable component is adapted to travel in a non-displacing rotation in response to an action resulting from the first movable component, the third movable component is capable of traveling in the non-displacing rotation along with the second movable component. 2. The multi-staged hinge assembly as claimed in claim 1, wherein the first movable component has a first cam structure formed at an end of the first movable component, in which the end is opposite to the other end of the first movable component in contact with the elastic device. 3. The multi-staged hinge assembly as claimed in claim 2, wherein the second movable component comprises a second cam structure abutting against the first cam structure, and is capable of traveling in a relative motion with respect to the first cam structure. 4. The multi-staged hinge assembly as claimed in claim 3, wherein the first cam structure has a first inclined surface and the second cam structure has a second inclined surface, in which the first inclined surface operatively associates with the second inclined surface to drive the second movable component to travel in the non-displacing rotation from a first position to a second position when the first movable component travels in the non-rotating displacement. 5. The multi-staged hinge assembly as claimed in claim 4, wherein the first inclined surface comprises a first engagement end, and the second inclined surface comprises a second engagement end corresponding to the first engagement end to constrain the second movable component at the second position. 6. The multi-staged hinge assembly as claimed in claim 5, wherein the second movable component and the third movable component are respectively formed with a male structure and a female structure for operatively associating with each other. 7. The multi-staged hinge assembly as claimed in claim 6, wherein the male structure is a protrusion and the female structure comprises at least two recesses which are continuously disposed, the protrusion being adapted to couple to each of the recesses for the third movable component to rotate with respect to the second movable component. 8. The multi-staged hinge assembly as claimed in claim 7, wherein the third movable component further comprises a dome portion disposed between the recesses for the protrusion to slide thereon. 9. The multi-staged hinge assembly as claimed in claim 5, wherein each of the second movable component and the third movable component is formed with a contact surface to provide a static friction therebetween. 10. The multi-staged hinge assembly as claimed in claim 5, further comprising a stopper disposed onto the first portion of the spindle and opposite to the first movable component, wherein the elastic device is a spring encircling onto the first portion of the spindle, and the elastic device comprises two opposite ends abutting against the stopper and the first movable component respectively. 11. The multi-staged hinge assembly as claimed in claim 7, wherein the third movable component further comprises a flat portion disposed between the recesses for the protrusion to be positioned thereon by virtue of a static friction therebetween. 12. A portable electrical device, comprising: a first body portion;a second body portion;a sliding module connecting to the first body portion and the second body portion, the first body portion having a surface, the second body portion being capable of sliding on the first body portion along the surface thereof; anda multi-staged hinge assembly, comprising: a spindle having a first portion and a second portion;an elastic device being disposed on the first portion and adapted to provide an axial thrust towards the second portion;a first movable component comprising a first inner periphery to define a first axial hole for the first movable component to be penetrated through the second portion of the spindle;a second movable component comprising a second inner periphery to define a second axial hole for the second movable component to be penetrated through the second portion of the spindle, in which the second movable component is adjacent to the first movable component and opposite to the elastic device; anda third movable component comprising a third axial hole for the spindle to penetrate therethrough to dispose onto the second portion and to connected with an end of the second movable component, in which the end is opposite to the other end of the second movable component abutting against the first movable component; wherein the spindle has a non-circular cross-section, in which the first inner periphery has a shape corresponding to the non-circular cross-section, the second inner periphery is circular, and the third axial hole has a cross-section which is circular, therefore, the first movable component is adapted to travel in a non-rotating displacement toward a direction away from the first portion when the first movable component is subjected to the axial thrust, while the second movable component is adapted to travel in a non-displacing rotation in response to an action resulting from the first movable component, the third movable component is capable of traveling in the non-displacing rotation along with the second movable component;wherein the multi-staged hinge assembly connects to the first body portion and the second body portion so that the second body portion is capable of moving in the non-displacing rotation after sliding with respect to the first body portion. 13. The portable electrical device as claimed in claim 12, wherein the first movable component comprises a first cam structure formed at an end of the first movable component, in which the end is opposite to the other end of the first movable component in contact with the elastic device. 14. The portable electrical device as claimed in claim 13, wherein the second movable component comprises a second cam structure abutting against the first cam structure, and is capable of traveling in a relative motion with respect to the first cam structure. 15. The portable electrical device as claimed in claim 14, wherein the first cam structure comprises at least one first inclined surface and the second cam structure comprises at least one second inclined surface, in which the first inclined surface operatively associates with the second inclined surface to drive the second movable component to travel in the non-displacing rotation from a first position to a second position when the first movable component travels in the non-rotating displacement. 16. The portable electrical device as claimed in claim 15, wherein the first inclined surface comprises at least one first engagement end, and the second inclined surface comprises at least one second engagement end corresponding to the first engagement end to constrain the second movable component at the second position. 17. The portable electrical device as claimed in claim 16, wherein the second movable component and the third movable component are respectively formed with at least one male structure and at least one female structure for operatively associating with each other. 18. The portable electrical device as claimed in claim 17, wherein the male structure is a protrusion and the female structure comprises at least two recesses which are continuously disposed, the protrusion being adapted to couple to each of the recesses for the third movable component to rotate with respect to the second movable component. 19. The portable electrical device as claimed in claim 18, wherein the second body portion connects to the third movable component so that the second body portion rotates along with the non-displacing rotation of the third movable component after the second body portion slides with respect to the first body portion. 20. The portable electrical device as claimed in claim 18, wherein the third movable component further comprises a dome portion disposed between the recesses for the protrusion to slide thereon. 21. The portable electrical device as claimed in claim 18, wherein the third movable component further comprises a flat portion disposed between the recesses for the protrusion to be positioned thereon by virtue of a static friction therebetween. 22. The portable electrical device as claimed in claim 12, wherein the second body portion further comprises a display and the first body portion further comprise a keyboard assembly disposed on the surface thereof. 23. The portable electrical device as claimed in claim 16, wherein each of the second movable component and the third movable component is formed with a contact surface to provide a static friction therebetween. 24. The portable electrical device as claimed in claim 16, further comprising a stopper disposed onto the first portion of the spindle and opposite to the first movable component, wherein the elastic device is a spring encircling onto the first portion of the spindle, and the elastic device comprises two opposite ends abutting against the stopper and the first movable component respectively.