System for integrated magnetic retention
A portable information handling system (IHS), including a housing having a main housing portion, a lid housing portion, and a hinge assembly rotatably coupling the main housing portion and the lid housing portion to rotate the lid housing portion through a plurality of angular positions relative to the main housing portion is disclosed. The plurality of positions include a closed position and a tablet position. The portable IHS further includes a lid magnet assembly in the lid housing portion including a point on the lid magnet assembly closest to the hinge assembly in the tablet position at a first position on a y-axis; and a main magnet assembly in the main housing portion including a point on the main magnet assembly closest to the hinge assembly in the tablet position at a second position on a y-axis, wherein the second position is approximately the same as the first position.
1. A portable information handling system comprising: a housing having a main housing portion and a lid housing portion; a hinge assembly rotatably coupling the main housing portion and the lid housing portion to rotate the lid housing portion through a plurality of angular positions relative to the main housing portion, the plurality of positions including: a closed position where the lid housing portion is rotated approximately 0 degrees relative to the main housing portion; and a tablet position where the lid housing portion is rotated approximately 360 degrees relative to the lid housing portion; a lid magnet assembly in the lid housing portion including a point on the lid magnet assembly closest to the hinge assembly in the tablet position that is located at a first position on a y-axis; and a main magnet assembly in the main housing portion including a point on the main magnet assembly closest to the hinge assembly in the tablet position that is located at a second position on a y-axis; wherein the second position is approximately the same as the first position; and wherein: a z-axis is defined to be parallel to the hinge assembly and to run through a rotational axis of the hinge assembly; the y-axis is defined to be perpendicular to the z-axis and parallel to the main housing portion; and an x-axis is defined to be perpendicular to the z-axis and perpendicular to the y-axis; and wherein: the lid magnet assembly in the lid housing portion includes a point on the lid magnet assembly closest to the hinge assembly in the closed position that is located at a third position on a y-axis; and the main magnet assembly in the main housing portion includes a point on the main magnet assembly closest to the hinge assembly in the closed position that is located at a fourth position on a y-axis; wherein the fourth position is different from the third position.
2. The system of claim 1 , wherein the offset between the fourth position and third position is approximately 4.8 mm.
3. The system of claim 1 , wherein:
in the closed position, the main magnet assembly is separated from the lid magnet assembly by a first offset in the x-axis;
in the tablet position, the main magnet assembly is separated from the lid magnet assembly by a second offset in the x-axis; and
the first offset is smaller than the second offset.
4. The system of claim 3 , wherein:
the first offset is approximately 4 mm; and
the second offset is approximately 6 mm.
5. The system of claim 1 , wherein:
the lid magnet assembly is attracted to the main magnet assembly by a closed magnetic coupling force when the lid housing portion is in the closed position;
the lid magnet assembly is attracted to the main magnet assembly by a tablet magnetic coupling force when the lid housing portion is in the tablet position;
the closed magnetic coupling force is approximately the same as the tablet magnetic coupling force.
6. The system of claim 1 wherein:
the lid housing portion includes a display; and
in the closed position, the display is located between the lid magnet assembly and the main magnet assembly.
7. The system of claim 1 wherein:
the main housing portion includes a battery; and
in the tablet position, the battery is located between the lid magnet assembly and the main magnet assembly.
8. The system of claim 1 wherein:
the lid magnet assembly includes one or more neodymium 45 magnets; and
the main magnet assembly includes one or more neodymium 45 magnets.
9. The system of claim 1 , wherein the hinge does not include a detent mechanism.
10. A portable information handling system comprising: a housing having a main housing portion and a lid housing portion; a hinge assembly rotatably coupling the main housing portion and the lid housing portion to rotate the lid housing portion through a plurality of angular positions relative to the main housing portion, the plurality of positions including: a closed position where the lid housing portion is rotated approximately 0 degrees relative to the main housing portion; and a tablet position where the lid housing portion is rotated approximately 360 degrees relative to the lid housing portion; a lid magnet assembly in the lid housing portion; and a main magnet assembly in the main housing portion; wherein, in the closed position, the display is located between the lid magnet assembly and the main magnet assembly; wherein: the lid magnet assembly in the lid housing portion includes a point on the lid magnet assembly closest to the hinge assembly in the tablet position that is located at a first position on a y-axis; and the main magnet assembly in the main housing portion includes a point on the main magnet assembly closest to the hinge assembly in the tablet position that is located at a second position on a y-axis; wherein the second position is approximately the same as the first position; and wherein: a z-axis is defined to be parallel to the hinge assembly and to run through a rotational axis of the hinge assembly; the y-axis is defined to be perpendicular to the z-axis and parallel to the main housing portion; and an x-axis is defined to be perpendicular to the z-axis and perpendicular to the y-axis; and wherein: the lid magnet assembly in the lid housing portion includes a point on the lid magnet assembly closest to the hinge assembly in the closed position that is located at a third position on a y-axis; and the main magnet assembly in the main housing portion includes a point on the main magnet assembly closest to the hinge assembly in the closed position that is located at a fourth position on a y-axis; wherein the fourth position is different from the third position.
11. The system of claim 10 wherein:
the main housing portion includes a battery; and
in the tablet position, the battery is located between the lid magnet assembly and the main magnet assembly.
12. The system of claim 10 , wherein the offset between the fourth position and third position is approximately 4.8 mm.
13. The system of claim 10 , wherein: in the closed position, the main magnet assembly is separated from the lid magnet assembly by a first offset in the x-axis; in the tablet position, the main magnet assembly is separated from the lid magnet assembly by a second offset in the x-axis; and the first offset is smaller than the second offset.
14. The system of claim 13 , wherein:
the first offset is approximately 4 mm; and
the second offset is approximately 6 mm.
15. The system of claim 10 wherein:
the lid magnet assembly is attracted to the main magnet assembly by a closed magnetic coupling force when the lid housing portion is in the closed position;
the lid magnet assembly is attracted to the main magnet assembly by a tablet magnetic coupling force when the lid housing portion is in the tablet position;
the closed magnetic coupling force is approximately the same as the tablet magnetic coupling force.
16. The system of claim 10 , wherein:
in the lid magnet assembly includes one or more neodymium 45 magnets; and
the main magnet assembly includes one or more neodymium 45 magnets.
17. The system of claim 10 , wherein the hinge does not include a detent mechanism.