Some embodiments are directed to a luggage assembly, and frame, wherein the luggage assembly includes a luggage item and a wheel assembly. The wheel assembly includes at least one front wheel, and rear wheels which are all moveable between a folded and an unfolded position. The folded positions of t
Some embodiments are directed to a luggage assembly, and frame, wherein the luggage assembly includes a luggage item and a wheel assembly. The wheel assembly includes at least one front wheel, and rear wheels which are all moveable between a folded and an unfolded position. The folded positions of the wheels are within the luggage assembly. The unfolded position of the rear wheels is behind the luggage assembly and the unfolded position of the front wheel is below the luggage assembly. When the wheels are in the unfolded position and the luggage assembly is arranged on the wheels on the ground, the luggage item is tilted and a projected point of gravity of the luggage item is in between the wheels. The disclosed luggage assembly is suitable for being pushed and being pulled, is very stable and provides a stable road behavior.
대표청구항▼
1. A luggage assembly that is movable along a ground surface, comprising: a luggage item;a wheel assembly, the wheel assembly including front wheels, and rear wheels, the front wheels including a first front wheel, and a second front wheel, the rear wheels including a first rear wheel, and a second
1. A luggage assembly that is movable along a ground surface, comprising: a luggage item;a wheel assembly, the wheel assembly including front wheels, and rear wheels, the front wheels including a first front wheel, and a second front wheel, the rear wheels including a first rear wheel, and a second rear wheel, the front and rear wheels being moveable between a folded position and an unfolded position;a bottom flank that defines a surface facing, in use, the ground surface when the luggage assembly is placed on the ground surface with the front and rear wheels in an unfolded position, the bottom flank having a push direction edge, and an opposite pull direction edge, the push direction edge facing in a forward direction when, in use, the luggage assembly is pushed by a user;a rear side that defines a surface coupled to the bottom flank at the pull direction edge,a front side that defines a surface coupled to the bottom flank at the push edge,wherein: the folded position of the front and rear wheels is within the luggage assembly,the unfolded position of the front wheels is completely at a side of the bottom flank that faces away from the luggage item, and is positioned closer to the push direction edge than to the pull direction edge,the unfolded position of the rear wheels is completely at a side of the rear side that is facing away from the luggage item, andwhen the luggage assembly touches the ground surface with the front and rear wheels in the unfolded position, the luggage item, when seen from aside, has a tilted position with respect to a line perpendicular to the ground surface in which the rear side tilts towards the ground surface, and has a projected center of the luggage item which, when seen from aside, is in between the rear wheels, and the front wheels, the projected center of the luggage item being defined as a perpendicular projection of a center of the luggage item on the ground surface,wherein the front wheels are arranged to rotate around a front rotational axis from the unfolded to the folded position, and from the folded position to the unfolded position, the front rotational axis is parallel to an intersectional line of the front side, and the bottom flank, the front rotational axis is inside the luggage assembly within a distance of ten centimeters from the intersectional line of the front side, and the bottom flank,wherein the wheel assembly includes a front wheel support for providing support to the front wheels, the front wheel support further including an arm coupled to an axis coinciding with the front rotational axis, wherein: when the front wheels are in the folded position, the arm extends from the axis in a direction towards the rear side, andthe front wheels are in between the front side, and the rear side,wherein the front wheel support is rotatable around the axis when the luggage item is arranged in a further tilted position, the rotating of the front wheel support moves each of the front wheels along a trajectory from the unfolded position towards another position below the bottom flank to the folded position, or from the folded position below the bottom flank towards the unfolded position, wherein in the further tilted position the luggage item is more tilted than in the tilted position of the luggage item, and the rear side is closed to the ground surface than in the tilted position. 2. The luggage assembly according to claim 1, wherein: the unfolded position of the front wheels is also completely at a side of the front side that faces away from the luggage item. 3. The luggage assembly according to claim 1, wherein: when the front and rear wheels in the unfolded position, and when looking to the luggage assembly from aside: an x-dimension is defined in a direction from a first line defined by a point where the front wheels touch the ground surface towards a second line parallel to the first line; andthe second line is defined by points where the rear wheels touch the ground surface, wherein a position on the first line has an x-coordinate of 0 and a position on the second line has the x-coordinate 1, andwhen the front and rear wheels are in the unfolded position, the projected center of the luggage item has the x-coordinate in a range from 0.2 to 0.9. 4. The luggage assembly according to claim 1, wherein: when the luggage assembly touches the ground surface with the front and rear wheels in the unfolded position, a tilting angle of the luggage item in the tilted position is within a range from 10 degrees to 35 degrees, the tilting angle is defined between a surface of the luggage item which at least partially coincides with the rear side of the luggage assembly, and a line perpendicular to the ground surface. 5. The luggage assembly according to claim 2, wherein: the front side and the rear side of the luggage assembly are separated from each other by flanks, the flanks include the bottom flank, a top flank, a first side flank, and a second side flank, the top flank being opposite the bottom flank, and the first side flank being opposite the second side flank,the first rear wheel is arranged to rotate around a first side rotational axis from the unfolded to the folded position, and from the folded position to the unfolded position, the first side rotational axis is parallel to, and within a distance of ten centimeters from an intersectional line of the rear side, and the first side flank, the second rear wheel is arranged to rotate around a second side rotational axis from the unfolded to the folded position, and from the folded position to the unfolded position, the second side rotational axis is parallel to and within a distance of ten centimeters from an intersectional line of the rear side, and the second side flank. 6. The luggage assembly according to claim 5, wherein: when the luggage assembly includes the top flank, the luggage assembly further includes a handle assembled to the rear side of the luggage assembly, the handle is moveable between a folded position and an unfolded position, the folded position of the handle is within the luggage assembly, and the unfolded position is a position at a specific side of the top flank that faces away from the luggage item. 7. The luggage assembly according to claim 6, wherein the wheel assembly comprises: a first rear rotator for rotating the first rear wheel around the first side rotational axis and a second rear rotator for rotating the second rear wheel around the second side rotational axis, each one of said rear rotators comprises a helix element for transforming a linear movement into a rotational movement, said helix elements comprise a helix shaped recess for receiving a pin that is coupled to the handle and that is only able to move into a linear direction. 8. The luggage assembly according to claim 1, wherein: the wheel assembly includes a pedal, and a piston assembly, the piston assembly includes a moveable piston, and a resilient element for pressing the moveable piston towards an extended position, the pedal is coupled to the piston assembly for compressing the resilient element in response to an operation of the pedal by a user, the piston assembly configured for storing energy in the resilient element for rotating the first and second front wheel when the luggage item is in the further tilted position. 9. The luggage assembly according to claim 8, wherein: the wheel assembly further includes an U-recessed element, and the piston assembly comprises a switching element, the U-recessed element is arranged rotatable around and axis, and is coupled to the front wheels for rotating the front wheels around the front rotational axis when the U-recessed element rotates, the U-recessed element comprises a recess which comprises a first edge, and a second edge at opposite sides of an opening of the recess, the recess is arranged for receiving a portion of the switching element, the switching element is coupled to the moveable piston, wherein the U-recessed element and the switching element are positioned with respect to each other such that, when energy is stored in the resilient element of the piston assembly, the moveable piston pushes the switching element towards the U-recessed element thereby obtaining contact between the switching element and first edge, or the second edge of the U-recessed element such that the U-recessed element receives a force in a first direction or in a second direction for obtaining a movement of the front wheels from the folded position to said unfolded position, or from the unfolded position to the folded position, when the luggage item is arranged in the further tilted position. 10. The luggage assembly according to claim 1, wherein the luggage item comprises a suitcase. 11. The luggage assembly according to claim 1, further comprising: a handle being assembled to the rear side of the luggage assembly, and, when the wheels are in the unfolded position and the luggage assembly touches the ground surface with the wheels, the luggage assembly is suitable for being pushed and pulled by a user, and, when at least the rear wheels are in the unfolded position, the luggage assembly is suitable for being pulled by the user. 12. The luggage assembly according to claim 1, further comprising: a frame for carrying the luggage item,the frame comprising the wheel assembly, andthe luggage item being releasably attached to the frame. 13. A frame that is movable along a ground surface, wherein the frame is for use with a luggage assembly and carrying a luggage item, the luggage assembly including a bottom flank, a front side and a rear side, the frame comprising: a wheel assembly that includes front wheels, and rear wheels, the front wheels including a first front wheel, and a second front wheel, the rear wheels including a first rear wheel, and a second rear wheel, the front and rear wheels being moveable between a folded position and an unfolded position; wherein: the bottom flank defines a surface facing, in use, the ground surface when the luggage assembly is placed on the ground surface with the wheels in the unfolded position, the bottom flank having a push direction edge, and an opposite pull direction edge, the push direction edge facing in a forward direction when, in use, the luggage assembly is pushed by a user; andthe rear side defines a surface coupled to the bottom flank at the pull direction edge, such that: the folded position of the wheels is within the luggage assembly,the unfolded position of the front wheels are completely at a side of the bottom flank that faces away from the luggage item, and is positioned closer to the push direction edge than to the pull direction edge,the unfolded position of the rear wheels is completely at a side of the rear side that is facing away from the luggage item, andwhen the luggage assembly touches the ground surface with the wheels in the unfolded position and, the luggage item has a tilted position with respect to a line perpendicular to the ground surface in which the rear side tilts towards the ground surface and has a projected center of the luggage item is in between the rear wheels, and the front wheels, the projected center of the luggage item is a perpendicular projection of a center of the luggage item on the ground surface,wherein the front wheels are arranged to rotate around a front rotational axis from the unfolded to the folded position, and from the folded position to the unfolded position, the front rotational axis is parallel to an intersectional line of the front side, and the bottom flank, the front rotational axis is inside the luggage assembly within a distance of ten centimeters from the intersectional line of the front side, and the bottom flank,wherein the wheel assembly includes a front wheel support for providing support to the front wheels, the front wheel support further including an arm coupled to an axis coinciding with the front rotational axis, wherein: when the front wheels are in the folded position, the arm extends from the axis in a direction towards the rear side, andthe front wheels are in between the front side, and the rear side,wherein the front wheel support is rotatable around the axis when the luggage item is arranged in a further tilted position, the rotating of the front wheel support moves each of the front wheels along a trajectory from the unfolded position towards another position below the bottom flank to the folded position, or from the folded position below the bottom flank towards the unfolded position, wherein in the further tilted position the luggage item is more tilted than in the tilted position of the luggage item, and the rear side is closed to the ground surface than in the tilted position.
Nykoluk, Cory O.; Nordstrom, Mark B.; O'Shea, Jr., James Edward, Method of and device for extending and retracting the wheels of a piece of towable baggage.
Hollingsworth W. Dale, Modular luggage system including a wheeled flight bag and an externally demountable, releasably attachable computer carrying case.
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