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Roll-down cargo door arrangements for vehicles (патент US № 8201871)

Официальная публикация
патента US № 8201871

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Классы МПК:B60J5/06 ..скользящие, складные 
B60J5/08 ...диафрагменного типа 
B60J5/12 ..скользящие; складные 
B60J5/14 ...диафрагменного типа 
Автор(ы):Rydberg, James D. (Huntington, NY, US)
Приоритеты:
подача заявки
21.04.2011
публикация патента
19.06.2012

РЕФЕРАТ (Abstract)

The disclosure includes a cargo vehicle. The cargo vehicle includes a cargo compartment, which in turn is defined by a floor, a plurality of adjoining walls extending upwardly from the floor, and a ceiling attached to an upper end of the plurality of adjoining walls, wherein the walls, floor and ceiling cooperate to form the cargo compartment and a first vertical opening having a width defined by first and second sides for accessing the interior of the cargo compartment. The vehicle further includes a first segmented retractable door proximate the first vertical opening of the cargo compartment. The first door is displaceable from a first vertically-oriented closed position in which the door covers the first vertical opening to a second open position in which the door is substantially disposed below the first vertical opening.

ФОРМУЛА ИЗОБРЕТЕНИЯ (CLAIMS)

What is claimed is:

1. A cargo vehicle, comprising: a) a cargo compartment, the cargo compartment including: i) a floor; ii) a plurality of adjoining walls extending upwardly from the floor; and iii) a ceiling attached to an upper end of the plurality of adjoining walls, wherein the walls, floor and ceiling cooperate to form the cargo compartment and a first vertical opening having a width defined by first and second sides for accessing the interior of the cargo compartment; b) a first segmented retractable door proximate the first vertical opening of the cargo compartment; the first door being displaceable from a first vertically-oriented closed position in which the door covers the first vertical opening, to a second open position in which the door is substantially disposed below the first vertical opening; c) a first track adapted and configured to receive a first side of the first segmented door, the first track having a first vertically oriented segment disposed along the first side of the first vertical opening; d) a second track adapted and configured to receive a second side of the first segmented door, the second track having a first vertically oriented segment disposed along the second side of the first vertical opening, wherein the first segmented door is downwardly displaceable along the first and second tracks from the first position to the second position; and e) a spring mechanism in operable communication with the first segmented retractable door, wherein at least one spring in the spring mechanism is loaded when the first segmented retractable door is opened, and further wherein energy from loading the at least one spring can be released by closing the first segmented retractable door.

2. The cargo vehicle of claim 1, wherein the first segmented retractable door is adapted and configured to fold in an accordion-like fashion through an opening defined by the floor of the cargo compartment.

3. The cargo vehicle of claim 2, wherein an uppermost segment of the first segmented retractable door is adapted and configured to form a cover that covers the opening defined by the floor of the cargo compartment.

4. The cargo vehicle of claim 2, wherein the lower end of the first segmented retractable door is fixedly attached to the cargo vehicle.

5. The cargo vehicle of claim 1, further comprising a latch for holding the first segmented retractable door in an open position, wherein the latch can be released to permit the first segmented retractable door to close with the assistance of energy loaded into the at least one spring.

6. The cargo vehicle of claim 5, wherein the latch automatically actuates when the first segmented retractable door is opened to maintain the first segmented retractable door in an open condition.

7. The cargo vehicle of claim 6, wherein the latch is released by pressing downwardly on the first segmented retractable door.

8. The cargo vehicle of claim 6, wherein: a) the at least one spring is a compressive spring that is compressed when it is loaded; b) a first end of the compressive spring is in operable contact with a portion of the first segmented retractable door; and c) a second end of the compressive spring is in contact with a support attached to the cargo vehicle, such that the compressive spring is compressed between the portion of the first segmented retractable door and the support when the first segmented retractable door is opened, and wherein the compressive spring provides a spring force to assist in closing the first segmented retractable door.

9. The cargo vehicle of claim 6, wherein: a) the at least one spring is a tension spring that is elongated when it is loaded; b) a first end of the tension spring is in operable contact with a portion of the first segmented retractable door; and c) a second end of the tension spring is in contact with a support attached to the cargo vehicle, such that the tension spring is elongated and tensioned when the first segmented retractable door is opened, and wherein the tension spring provides a spring force to assist in closing the first segmented retractable door.

10. The cargo vehicle of claim 6, wherein: a) the at least one spring is a torsion spring defining a spring axis through its center, the torsion spring being reduced from a first diameter to second diameter with respect to the spring axis when it is loaded; b) the first track further includes a second substantially horizontally oriented segment connected to the first vertically oriented segment disposed along and below the floor of the cargo compartment and a third curved segment connected to the second segment, wherein the third segment is also disposed below the floor of the cargo compartment; c) the second track further includes a second substantially horizontally oriented segment connected to the first vertically oriented segment disposed along and below the floor of the cargo compartment and a third curved segment connected to the second segment, wherein the third segment is also disposed below the floor of the cargo compartment; and d) the cargo vehicle further includes a rotating drum disposed below the floor of the cargo compartment adapted to rotate about a horizontal drum axis substantially defined by a center of radius of curvature of the third curved segment of the first track and the third curved segment of the second track, wherein the first segmented retractable door is adapted and configured to roll into a cylindrical shape around the rotating drum, and further wherein the axis of the torsion spring is substantially coincident with the drum axis, and further wherein the torsion spring is loaded when the first segmented retractable door is wound about the drum, and the torsion spring is unloaded when the first segmented retractable door is unwound from the drum, such that the torsion spring facilitates closure of the first segmented retractable door.

11. The cargo vehicle of claim 1, wherein: a) the first track further includes a second substantially horizontally oriented segment connected to the first vertical segment disposed along and below the floor of the cargo compartment; and b) the second track further includes a second substantially horizontally oriented segment connected to the first vertical segment disposed along and below the floor of the cargo compartment, wherein the first segmented retractable door is downwardly displaceable along the first and second tracks from the first position to the second position.

12. The cargo vehicle of claim 1, wherein the cargo compartment defines a second vertical opening having a width defined by first and second sides for accessing the interior of the cargo compartment, and wherein the cargo vehicle further includes: a) a second segmented retractable door proximate the second vertical opening of the cargo compartment; the second segmented retractable door being displaceable from a first vertically-oriented closed position in which the second segmented retractable door covers the second vertical opening to a second open position in which the second segmented retractable door is substantially disposed below the second vertical opening; c) a third track adapted and configured to receive a first side of the second segmented retractable door, the third track having a first vertically oriented segment disposed along the first side of the second vertical opening; and d) a fourth track adapted and configured to receive a second side of the second segmented retractable door, the fourth track having a first vertically oriented segment disposed along the second side of the second vertical opening, wherein the second segmented retractable door is downwardly displaceable along the third and fourth tracks from the first position to the second position.

13. A cargo vehicle, comprising: a) a cargo compartment, the cargo compartment including: i) a floor; ii) a plurality of adjoining walls extending upwardly from the floor; and iii) a ceiling attached to an upper end of the plurality of adjoining walls, wherein the walls, floor and ceiling cooperate to form the cargo compartment and a first vertical opening having a width defined by first and second sides for accessing the interior of the cargo compartment; b) a first segmented retractable door proximate the first vertical opening of the cargo compartment; the first door being displaceable from a first vertically-oriented closed position in which the door covers the first vertical opening, to a second open position in which the door is substantially disposed below the first vertical opening; c) a first track adapted and configured to receive a first side of the first segmented door, the first track having a first vertically oriented segment disposed along the first side of the first vertical opening; and d) a second track adapted and configured to receive a second side of the first segmented door, the second track having a first vertically oriented segment disposed along the second side of the first vertical opening, wherein the first segmented door is downwardly displaceable along the first and second tracks from the first position to the second position, wherein the cargo compartment defines a second vertical opening having a width defined by first and second sides for accessing the interior of the cargo compartment, and the cargo vehicle further includes: e) a second segmented retractable door proximate the second vertical opening of the cargo compartment; the second segmented retractable door being displaceable from a first vertically-oriented closed position in which the second segmented retractable door covers the second vertical opening to a second open position in which the second segmented retractable door is substantially disposed below the second vertical opening; f) a third track adapted and configured to receive a first side of the second segmented retractable door, the third track having a first vertically oriented segment disposed along the first side of the second vertical opening; and g) a fourth track adapted and configured to receive a second side of the second segmented retractable door, the fourth track having a first vertically oriented segment disposed along the second side of the second vertical opening, wherein the second segmented retractable door is downwardly displaceable along the third and fourth tracks from the first position to the second position, wherein the first track, second track, third track and fourth track each further comprise horizontal portions extending under the cargo vehicle at different depths below the floor of the cargo compartment such that the first segmented retractable door and second segmented retractable door can slide past each other along the bottom of the cargo compartment.

14. The cargo vehicle of claim 13, wherein the first vertical opening and the second vertical opening are located on opposite sides of the cargo compartment.

15. The cargo vehicle of claim 14, wherein the cargo vehicle includes a plurality of pairs of opposing downwardly retractable doors, wherein each door retracts downwardly below the floor of the cargo compartment.

16. The cargo vehicle of claim 14, wherein the cargo compartment defines a third vertical opening at the back of the cargo compartment having a width defined by first and second sides for accessing the interior of the cargo compartment, and wherein the cargo vehicle further includes: a) a third segmented retractable door proximate the third vertical opening of the cargo compartment; the third segmented retractable door being displaceable from a first vertically-oriented closed position in which the second segmented retractable door covers the third vertical opening to a second open position in which the third segmented retractable door is substantially disposed below the third vertical opening; c) a fifth track adapted and configured to receive a first side of the third segmented retractable door, the fifth track having a first vertically oriented segment disposed along the first side of the third vertical opening; and d) a sixth track adapted and configured to receive a second side of the third segmented retractable door, the sixth track having a first vertically oriented segment disposed along the second side of the third vertical opening, wherein the second segmented retractable door is downwardly displaceable along the fifth and sixth tracks from the first position to the second position.

17. The cargo vehicle of claim 16, wherein the first track, second track, third track, fourth track, fifth track and sixth track each further comprise horizontal portions extending under the cargo vehicle at different depths below the floor of the cargo compartment such that the first segmented retractable door, second segmented retractable door and third segmented retractable door can slide past each other along the bottom of the cargo compartment.

18. The cargo vehicle of claim 16, wherein the first segmented retractable door, second segmented retractable door and third segmented retractable door are adapted and configured to fold in an accordion-like fashion through first, second and third openings defined by the floor of the cargo compartment.

19. A cargo vehicle, comprising: a) a cargo compartment, the cargo compartment including: i) a floor; ii) a plurality of adjoining walls extending upwardly from the floor; and iii) a ceiling attached to an upper end of the plurality of adjoining walls, wherein the walls, floor and ceiling cooperate to form the cargo compartment and first and second vertical openings, each of the first and second vertical openings having a width defined by first and second sides for accessing the interior of the cargo compartment b) first and second segmented retractable doors proximate the first and second vertical openings of the cargo compartment the first and second retractable doors being displaceable from a first vertically-oriented closed position in which the doors cover the first and second vertical openings, to a second open position in which the doors are substantially disposed below the first and second vertical openings; c) a first track adapted and configured to receive a first side of the first segmented door, the first track having a first vertically oriented segment disposed along the first side of the first vertical opening; d) a second track adapted and configured to receive a second side of the first segmented door, the second track having a first vertically oriented segment disposed along the second side of the first vertical opening, wherein the first segmented door is downwardly displaceable along the first and second tracks from the first position to the second position; e) a third track adapted and configured to receive a first side of the second segmented door, the third track having a first vertically oriented segment disposed along the first side of the second vertical opening; f) a fourth track adapted and configured to receive a second side of the second segmented door, the fourth track having a first vertically oriented segment disposed along the second side of the second vertical opening, wherein the second segmented door is downwardly displaceable along the third and fourth tracks from the first position to the second position, wherein the first and second segmented doors are adapted and configured to slide past each other below the cargo vehicle.


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