IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0023835
(2014-07-24)
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등록번호 |
US-9896138
(2018-02-20)
|
우선권정보 |
NL-2011492 (2013-09-25) |
국제출원번호 |
PCT/EP2014/002025
(2014-07-24)
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국제공개번호 |
WO2015/043692
(2015-04-02)
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발명자
/ 주소 |
- De Bock, Robby
- Dirk Van Dorsser, Wouter
- Jongebreur, Hessel Jacobus
- Van Raemdonck, Gandert Marcel Rita
- Van Raemdonck, Hjalmar Luc Maria
|
출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
18 |
초록
▼
A drag reducing device for reducing aerodynamic drag at a trailing end of a moving bluff body includes a first and a second panel, which are movable connected to each other to move together from a collapsed to an extended configuration. At least one bias element is provided for exerting a spring for
A drag reducing device for reducing aerodynamic drag at a trailing end of a moving bluff body includes a first and a second panel, which are movable connected to each other to move together from a collapsed to an extended configuration. At least one bias element is provided for exerting a spring force to the first panel structure to support the movement of the panels. The bias element includes a bendable spring rod. The spring rod extends along a curvature in a pre-tensioned condition in between the first and second panel from a back region B of the drag reducing device to a front region F of the drag reducing device, such that the spring rod exerts a spring force to the panel structure. The spring rod effectively supports at least one panel, while at the same time maintains a simple and reliable configuration of the drag reducing device.
대표청구항
▼
1. A drag reducing device (1) for reducing aerodynamic drag at a trailing (12) end of a moving bluff body (10), the device (1) comprising: a first panel structure (2) including at least a first and a second panel (36, 28) which are at a lateral region movably connected to each other to move together
1. A drag reducing device (1) for reducing aerodynamic drag at a trailing (12) end of a moving bluff body (10), the device (1) comprising: a first panel structure (2) including at least a first and a second panel (36, 28) which are at a lateral region movably connected to each other to move together from a collapsed configuration wherein the panels (36, 28) are positioned close to the bluff body (10) to an extended configuration wherein the panels (36, 28) are rotated away from the trailing (12) end of the bluff body (10),wherein the first panel (36) is rotatable about a first pivot axis (360) to move the first panel (36) from the collapsed configuration to the extended configuration and wherein the second panel (28) is rotatable about a second pivot axis (280) to move the second panel (28) from the collapsed configuration to the extended configuration, the first pivot axis (360) extending substantially perpendicular to the second pivot axis (280),wherein at least one of the first or second panel (36,28) comprises at least a first and second panel section (36A, 36B) which are pivotally connected to each other about a section pivot axis (164), wherein the section pivot axis (164) originates from a point of intersection of the first pivot axis (280) and the second pivot axis (360) the section pivot axis (164) extending under an inclined angle away (44) from the first or second pivot axis (280,360), respectively, in a plane defined by the first panel (28) or the second panel (36),wherein at least one bias element is provided for exerting a spring force to the first panel structure (2) to support a movement of the panels (28,36) from the collapsed configuration to the extended configuration,wherein the at least one bias element comprises a first elongated bendable spring element (200) which first spring element (200) includes a longitudinal spring rod (210) having a first end (211) and a second end (212), wherein the spring rod (210) extends along a curvature in a pre-tensioned condition in between the first and second panel (28, 36) from a back region B of the drag reducing device to a front region F of the drag reducing device (1), such that the first spring element (210) exerts a spring force to the first or second panel (28, 36). 2. The drag reducing device (1) according to claim 1, wherein the second end (212) of the longitudinal rod (210) is connected at the front region F of a panel section. 3. The drag reducing device (1) according to claim 1, wherein the second end (212) of the longitudinal rod (210) is connected at an end region of the section pivot axis (164) of a sectioned panel (36A, 36B). 4. The drag reducing device (1) according to claim 3, wherein the first end (211) of the longitudinal rod (210) is connected at a region adjacent the pivot axis (280) of a panel neighboring the sectioned panel (36A, 36B). 5. The drag reducing device (1) according to claim 1, wherein the panel structure (2) further comprises a third panel (94), wherein the third panel (94) is rotatable about a third pivot axis (370) to move the third panel (94) from the collapsed configuration to the extended configuration, wherein the first (280), second (360) and third pivot axis (370) together define a C-shape, wherein the third panel (94) is movable connected to the first panel (28) at a lateral region of the third and first panel (28, 94) to move together from the collapsed configuration to the extended configuration, wherein at least one of the first or third panel (28, 94) comprises at least a first and second panel section (94A, 94B) which are pivotally connected to each other about a section pivot axis (165), wherein the section pivot axis (165) originates from a point of intersection of the first and third pivot axis (280, 370) and which section pivot axis (165) extends under an inclined angle away from the respectively first or third pivot axis (280, 370) in a plane defined by the respectively first or third panel (28, 94). 6. The drag reducing device (1) according to claim 5, wherein the at least one bias element comprises a second elongated bendable spring element, which second spring element includes a longitudinal spring rod (220) having a first and second end (221, 222), wherein the longitudinal spring rod (220) extends along a curvature in a pre-tensioned condition in between the first and third panel (28, 94) from a back region B of the drag reducing device to a front region F of the drag reducing device (1). 7. The drag reducing device according (1) to claim 5, wherein the second end of the second longitudinal rod is connected at the front region F of a panel section. 8. The drag reducing device according to claim 5, the second end (222) of the second longitudinal rod (220) is connected at an end region of the section pivot axis of a sectioned panel (94A, 94B). 9. The drag reducing device according to claim 8, wherein the first end (221) of the longitudinal rod (220) is connected at a region adjacent the pivot axis (280) of a panel (28) neighboring the sectioned panel (94). 10. The drag reducing device according to claim 5, wherein the first and second spring element are integrated into a one piece item to form an integrated spring element to exert a spring force on two panels of the panel structure. 11. The drag reducing device (1) according to claim 10, wherein the integrated spring element (200) is connected at an intermediate point at the back region (B) of the first panel (36). 12. The drag reducing device (1) according to claim 1, wherein the spring element (200) comprises a bundle of spring rods. 13. The drag reducing device (1) according to claim 1, wherein the spring element (200) has a longitudinal length with a varying thickness. 14. The drag reducing device (1) according to claim 1, wherein the spring element (200) comprises a reinforced plastic material. 15. The drag reducing device (1) according to claim 1, wherein the sectioned panel (36) of the panel structure (2) further comprises a blocking element to block a rotation of the first panel section (36A) about the section pivot axis (164) with respect to the second panel section (36B). 16. The drag reducing device (1) according to claim 1, wherein the drag reducing device (1) comprises a first and second panel structure (2, 3), wherein the first panel structure (2) is arranged opposite the second panel structure (3). 17. A vehicle having comprising a drag reducing device (1), anda bluff body (10), the bluff body (10) having a trailing end (12) wherein the drag reducing device (1) is connected to the trailing end (12) of the bluff body (10),wherein the drag reducing device (1) includes a first panel structure (2) including at least a first and a second panel (36, 28) which are at a lateral region movably connected to each other to move together from a collapsed configuration wherein the panels (36, 28) are positioned close to the bluff body (10) to an extended configuration wherein the panels (36, 28) are rotated away from the trailing (12) end of the bluff body (10),wherein the first panel (36) is rotatable about a first pivot axis (360) to move the first panel (36) from the collapsed configuration to the extended configuration and wherein the second panel (28) is rotatable about a second pivot axis (280) to move the second panel (28) from the collapsed configuration to the extended configuration, the first pivot axis (360) extending substantially perpendicular to the second pivot axis (280),wherein at least one of the first or second panel (36,28) comprises at least a first and second panel section (36A, 36B) which are pivotally connected to each other about a section pivot axis (164), wherein the section pivot axis (164) originates from a point of intersection of the first pivot axis (280) and the second pivot axis (360) the section pivot axis (164) extending under an inclined angle away (44) from the first or second pivot axis (280,360), respectively, in a plane defined by the first panel (28) or the second panel (36),wherein at least one bias element is provided for exerting a spring force to the first panel structure (2) to support a movement of the panels (28,36) from the collapsed configuration to the extended configuration,wherein the at least one bias element comprises a first elongated bendable spring element (200) which first spring element (200) includes a longitudinal spring rod (210) having a first end (211) and a second end (212), wherein the spring rod (210) extends along a curvature in a pre-tensioned condition in between the first and second panel (28, 36) from a back region B of the drag reducing device to a front region F of the drag reducing device (1), such that the first spring element (210) exerts a spring force to the first or second panel (28, 36). 18. A method for opening and closing a drag reducing device (1) at a trailing end (12) of a bluff body (10), comprising the steps of: providing a drag reducing device (1) including a first panel structure (2) including at least a first and a second panel (36, 28) which are at a lateral region movably connected to each other to move together from a collapsed configuration wherein the panels (36, 28) are positioned close to the bluff body (10) to an extended configuration wherein the panels (36, 28) are rotated away from the trailing (12) end of the bluff body (10),wherein the first panel (36) is rotatable about a first pivot axis (360) to move the first panel (36) from the collapsed configuration to the extended configuration and wherein the second panel (28) is rotatable about a second pivot axis (280) to move the second panel (28) from the collapsed configuration to the extended configuration, the first pivot axis (360) extending substantially perpendicular to the second pivot axis (280),wherein at least one of the first or second panel (36,28) comprises at least a first and second panel section (36A, 36B) which are pivotally connected to each other about a section pivot axis (164), wherein the section pivot axis (164) originates from a point of intersection of the first pivot axis (280) and the second pivot axis (360) the section pivot axis (164) extending under an inclined angle away (44) from the first or second pivot axis (280,360), respectively, in a plane defined by the first panel (28) or the second panel (36),wherein at least one bias element is provided for exerting a spring force to the first panel structure (2) to support a movement of the panels (28,36) from the collapsed configuration to the extended configuration,wherein the at least one bias element comprises a first elongated bendable spring element (200) which first spring element (200) includes a longitudinal spring rod (210) having a first end (211) and a second end (212), wherein the spring rod (210) extends along a curvature in a pre-tensioned condition in between the first and second panel (28, 36) from a back region B of the drag reducing device to a front region F of the drag reducing device (1), such that the first spring element (210) exerts a spring force to the first or second panel (28, 36),wherein the drag reducing device (1) comprises at least one bias element including an elongated bendable spring element (200) which comprises a longitudinal spring rod (210) having a first end (211) and a second end (212); andproviding a spring force by the spring element (200) on at least one panel (28, 36) of a panel structure of the drag reducing device (1) to support a movement of the at least one panel (28,36) from a collapsed configuration to an extended configuration of the drag reducing device (1).
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