WO2012073870A1 - フードインナパネル - Google Patents
フードインナパネル Download PDFInfo
- Publication number
- WO2012073870A1 WO2012073870A1 PCT/JP2011/077334 JP2011077334W WO2012073870A1 WO 2012073870 A1 WO2012073870 A1 WO 2012073870A1 JP 2011077334 W JP2011077334 W JP 2011077334W WO 2012073870 A1 WO2012073870 A1 WO 2012073870A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bead
- vehicle
- width direction
- vehicle width
- inner panel
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
Definitions
- the present invention relates to a hood inner panel constituting a hood of an automobile.
- Patent Document 1 describes an inner panel of an automobile hood provided with a plurality of beads extending in the vehicle width direction in order to improve energy absorption performance at the time of a collision.
- an object of the present invention is to provide a hood inner panel that can suppress a decrease in the reaction force of the inner panel as much as possible even when the deformation of the hood of the automobile progresses and obtain sufficient energy absorption performance.
- a hood inner panel includes an inner panel body that constitutes a hood of a vehicle, a front bead that is provided in the inner panel body and extends in the vehicle width direction, a rear bead of the front bead that is provided in the inner panel body. And a rear bead extending along the vehicle width direction. Further, the front bead is curved so that the vehicle width direction center portion is ahead of the vehicle width direction end portion, and the rear bead has a vehicle width direction center portion that is closer to the vehicle width direction end portion than the vehicle width direction end portion. It is curved to be behind.
- FIG. 1A is a plan view of a hood inner panel of an automobile hood according to the first embodiment of the present invention.
- FIG. 1B is a sectional view taken along line AA in FIG. 2 (a) to 2 (c) are operation explanatory views when a collision object collides with the upper surface of the hood of FIG. 1 (b).
- FIG. 2A is a plan view showing the direction in which the collision load is transmitted through the bead.
- FIG. 2B is a cross-sectional view showing the moment generated in the bead at the center in the vehicle width direction corresponding to the BB cross section of FIG. Further, FIG.
- FIG. 2C is a cross-sectional view showing the moment generated in the bead at an end portion in the vehicle width direction corresponding to the CC cross section of FIG.
- FIG. 3 is an explanatory diagram showing the reaction force that changes over time after the collision object collides with the upper surface of the hood.
- the solid line in FIG. 3 corresponds to the present embodiment, and the broken line corresponds to the conventional example in which the bead extending in the vehicle width direction is not curved as in the present embodiment.
- FIG. 4 is an explanatory diagram illustrating a collision load transmission path in a bead at the time of a frontal collision of the vehicle.
- Fig.5 (a) is a top view of the food inner panel of the hood for motor vehicles concerning the 2nd Embodiment of this invention.
- FIG. 5B is a DD cross-sectional view of FIG.
- FIG. 6 is a plan view of a hood inner panel of an automobile hood according to a third embodiment of the present invention.
- the automobile hood 1 includes a hood outer panel 3 positioned on the outer side of the vehicle body and a hood inner panel 5 fixed to the inner surface of the hood outer panel 3 on the inner side of the vehicle body.
- the hood inner panel 5 has an inner panel main body 5a.
- the inner panel main body 5a is provided with a front bead 7 and a rear bead 9 extending in the vehicle width direction.
- the vehicle width direction centers of the front bead 7 and the rear bead 9 substantially coincide with the vehicle width direction center of the hood inner panel 5 (hood 1). 1 corresponds to the vehicle front side, and the vertical direction in FIG. 1A corresponds to the vehicle width direction.
- the front bead 7 and the rear bead 9 are formed as protrusions protruding toward the vehicle inner side opposite to the hood outer panel 3.
- the front bead 7 is located on the vehicle front side of the hood inner panel 5. And the vehicle width direction center part 7a of the front side bead 7 is curving in the form which protrudes toward the vehicle front so that it may become a vehicle front side rather than the edge part 7b of the vehicle width direction both sides. Further, the front bead 7 is formed with a convex portion protruding toward the inside of the vehicle, and this convex portion has a tapered shape whose width becomes narrower toward the tip side, that is, the vehicle width direction side. As shown in FIG. 1B, the base end side width H1 of this convex portion is the width of the front bead 7 in the vehicle front-rear direction. The width H1 of the front bead 7 in the vehicle front-rear direction is set to gradually increase from the vehicle width direction central portion 7a toward the end portions 7b on both sides in the vehicle width direction.
- the rear bead 9 is located on the vehicle rear side of the front bead 7 and protrudes rearward so that the vehicle width direction center portion 9a is on the vehicle rear side with respect to the end portions 9b on both sides in the vehicle width direction. Is curved. Further, the width H2 of the rear bead 9 in the vehicle front-rear direction is also set so as to gradually increase from the vehicle width direction central portion 9a toward the end portions 9b on both sides in the vehicle width direction. As in the case of the front bead 7, the width H ⁇ b> 2 on the base end side of the convex portion is the width of the rear bead 9 in the vehicle front-rear direction.
- the vehicle width direction central portion 7a of the front bead 7 protrudes forward of the vehicle, whereas the vehicle width direction central portion 9a of the rear bead 9 protrudes rearward of the vehicle. ing. That is, the front and rear beads 7 and 9 are bent in opposite directions.
- the distance between the vehicle width direction center portion 7a of the front bead 7 and the vehicle width direction center portion 9a of the rear bead 9 is such that the end portions 7b on both sides of the front bead 7 in the vehicle width direction are rearward. It becomes larger than the space
- the hood 1 having the hood inner panel 5 having such a structure particularly the center part in the vehicle width direction of the front and rear beads 7, 9 formed on the hood inner panel 5.
- the state when the colliding object P collides from the outside will be described.
- the collision load received by the hood inner panel 5 is applied from the vehicle width direction central portions 7a and 9a of the front and rear beads 7 and 9 to the end portions 7b and 9b on both sides in the vehicle width direction. It is gradually transmitted toward.
- the front and rear beads 5 and 9 are curved in opposite directions, as shown in FIG. 2 (b), around the cross section generated in the vehicle width direction central portions 7a and 9a.
- Moments M1 and M2 are in opposite directions.
- the moments M1, M2 of the vehicle width direction center portions 7a, 9a are gradually transmitted toward the vehicle width direction outer side as shown in FIG. To end portions 7b and 9b, and moments M3 and M4 shown in FIG.
- the front bead 7 and the rear bead 9 are set so as to gradually approach each other from the vehicle width direction center portions 7a, 9a toward the end portions 7b, 9b on both sides in the vehicle width direction. .
- the moments M1 and M2 around the cross section shown in FIG. 2B are more likely to cancel each other as they approach the end portions 7b and 9b on both sides in the vehicle width direction, and the deformation in the out-of-plane direction due to the input of the collision load is prevented. It can be kept small.
- the gap between the lower part of the hood 1 and the accommodation in the engine (motor) room can be set narrow. Therefore, the design freedom in the design of the vehicle body and the engine (motor) room can be increased.
- the collision load input at that time is the vehicle width direction as indicated by the arrow F from the vehicle width direction center portion 7 a of the front bead 7. It extends to one end 7b of the. Thereby, distortion becomes easy to generate
- the collision load input in this case extends from the vehicle width direction central portions 7a and 9a of the front and rear beads 7 and 9 to the end portions 7b and 9b on both sides in the vehicle width direction. As a result, distortion occurs in the region between the end portions 7b and 9b on both sides in the vehicle width direction.
- At least one of the front bead 7 and the rear bead 9 has the width in the vehicle front-rear direction of the end portions 7b, 9b on both sides in the vehicle width direction of the vehicle width direction center portions 7a, 9a. It is larger than the width in the vehicle longitudinal direction. From such a configuration, the rigidity of the end portions 7b, 9b on both sides in the vehicle width direction is higher than the rigidity of the center portions 7a, 9a in the vehicle width direction, and the deformation amount at the end portions 7b, 9b on both sides in the vehicle width direction is suppressed. . As a result, deformation of the entire hood 1 can be suppressed.
- the center portions 7a and 9a in the vehicle width direction of the front and rear beads 7 and 9 are intensively rotated by the moment generated in response to the collision load with the vehicle width direction both end portions 7b and 9b as fulcrums.
- Such input load is assumed. And in this embodiment, it becomes possible to disperse
- the front bead 7 is formed such that the width H1 in the vehicle front-rear direction gradually increases from the vehicle width direction central portion 7a toward the end portions 7b on both sides in the vehicle width direction.
- the width H1 of the bead may be substantially equal along the vehicle width direction without changing.
- the width H2 in the vehicle front-rear direction of the rear bead 9 may be substantially equal along the vehicle width direction as in the case of the front bead 7.
- an oval or elliptical intermediate bead 11 extending in the vehicle width direction is provided between the front bead 7 and the rear bead 9 in the first embodiment. It has been.
- the intermediate bead 11 is located at the center of the hood inner panel 5 in the vehicle width direction, and the center of the vehicle width direction is formed to substantially coincide with the center of the front bead 7 and the rear bead 9 in the vehicle width direction. .
- a region for bonding the hood outer panel 3 and the hood inner panel 5 is provided between the intermediate bead 11 and the front and rear beads 7 and 9.
- the curvature radius of the curved portion of the intermediate bead 11 on the front bead 7 side may be the same as or different from the curvature radius of the curved portion of the front bead 7 on the intermediate bead 11 side.
- the curvature radius of the curved portion on the rear bead 9 side of the intermediate bead 11 may be the same as or different from the curvature radius of the curved portion of the rear bead 9 on the intermediate bead 11 side.
- the intermediate bead 11 between the front bead 7 and the rear bead 9
- the rigid body of the entire hood 1 can be increased.
- the intermediate bead 11 causes the front bead 7 and the rear bead 9 to move forward and rearward of the vehicle. Each is deformed to be spread. Thereby, the energy absorption effect in the food
- the curvature radius R2 of the curved portion on the side is reduced (R1> R2).
- the curvature radius of the curved portion of the front bead 7 on the vehicle rear side is R3
- the curvature radius is set so as to satisfy the relationship of R1> R3.
- the curvature radius of the curved portion of the rear bead 9 on the vehicle rear side is R4
- the curvature radius is set so as to satisfy the relationship of R4> R2. That is, the curvature radii of the curved portions of the front bead 7 and the rear bead 9 are set so as to satisfy the relationship of R1> R3 and R4> R2.
- curvature radii R1 to R4 are set so as to satisfy the relationship of R1> R4 and R3> R2.
- the width in the vehicle front-rear direction of the vehicle width direction center portions 7a, 9a of the front and rear beads 7, 9 is the same as in the second embodiment shown in FIG. Rather, the same width of both end portions 7b and 9b in the vehicle width direction can be increased.
- the cross-sectional shape of the both ends 7b, 9b in the vehicle width direction is larger than the central portions 7a, 9a in the vehicle width direction, so that the rigidity of the both ends 7b, 9b in the vehicle width direction can be increased. .
- the intermediate bead 11 may not be provided.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Superstructure Of Vehicle (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
図1に示すように、自動車用フード1は、車体外側に位置するフードアウタパネル3と、このフードアウタパネル3の車体内側の内面に固定されるフードインナパネル5とを備えている。このフードインナパネル5はインナパネル本体5aを有し、さらにインナパネル本体5aには、車幅方向に延びる前側ビード7及び後側ビード9がそれぞれ設けられている。これら前側ビード7及び後側ビード9の車幅方向中心は、フードインナパネル5(フード1)の車幅方向中心とほぼ一致している。なお、図1中の矢印FRで示す方向が車両前方側に相当し、図1(a)中の上下方向が車幅方向に相当する。
次に、本発明の第2の実施形態に係るフードインナパネルについて、図面に基づき詳細に説明する。なお、第1の実施形態と同一の構成には同一符号を付し、重複する説明は省略する。
次に、本発明の第3の実施形態に係るフードインナパネルについて、図面に基づき詳細に説明する。なお、第1及び第2の実施形態と同一の構成には同一符号を付し、重複する説明は省略する。
3 フードアウタパネル
5 フードインナパネル
5a インナパネル本体
7 前側ビード
7a 前側ビードの車幅方向中央部
7b 前側ビードの車幅方向両側の端部
9 後側ビード
9a 後側ビードの車幅方向中央部
9b 後側ビードの車幅方向両側の端部
11 中間ビード
R1 前側ビードの車両前方側における湾曲部分の曲率半径
R2 後側ビードの車両前方側における湾曲部分の曲率半径
R3 前側ビードの車両後方側における湾曲部分の曲率半径
Claims (5)
- 車両のフードを構成するインナパネル本体と、
前記インナパネル本体に設けられ、車幅方向に沿って延びる前側ビードと、
前記インナパネル本体に設けられ、前記前側ビードの車両後方側に位置して車幅方向に沿って延びる後側ビードと、
を備え、
前記前側ビードは、車幅方向中央部が車幅方向端部よりも車両前方となるように湾曲しているとともに、前記後側ビードは、車幅方向中央部が車幅方向端部よりも車両後方となるように湾曲していることを特徴とするフードインナパネル。 - 前記前側ビードと前記後側ビードとの間において、車幅方向に延びる中間ビードを更に設けたことを特徴とする請求項1に記載のフードインナパネル。
- 前記前側ビードと前記後側ビードとの少なくともいずれか一方は、車幅方向端部の車両前後方向の幅が、車幅方向中央部の車両前後方向の幅よりも大きくなっていることを特徴とする請求項1又は2に記載のフードインナパネル。
- 前記前側ビードの車両前方側における湾曲部分の曲率半径R1と、前記後側ビードの車両前方側における湾曲部分の曲率半径R2が、以下の式(1)
R1>R2・・・(1)
を満たすことを特徴とする請求項1乃至3のいずれか1項に記載のフードインナパネル。 - 前記前側ビードの車両前方側における湾曲部分の曲率半径R1と、前記前側ビードの車両後方側における湾曲部分の曲率半径R3が以下の式(2)
R1>R3・・・(2)
を満たすことを特徴とする請求項1乃至4のいずれか1項に記載のフードインナパネル。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012546848A JP5433795B2 (ja) | 2010-12-03 | 2011-11-28 | フードインナパネル |
US13/823,059 US8740291B2 (en) | 2010-12-03 | 2011-11-28 | Hood inner panel |
BR112013013655-3A BR112013013655B1 (pt) | 2010-12-03 | 2011-11-28 | Painel interno de capô |
EP11845779.5A EP2647552B1 (en) | 2010-12-03 | 2011-11-28 | Hood inner panel |
RU2013130218/11A RU2527586C1 (ru) | 2010-12-03 | 2011-11-28 | Внутренняя панель капота |
CN201180046159.1A CN103118924B (zh) | 2010-12-03 | 2011-11-28 | 机罩内板 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010270390 | 2010-12-03 | ||
JP2010-270390 | 2010-12-03 |
Publications (1)
Publication Number | Publication Date |
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WO2012073870A1 true WO2012073870A1 (ja) | 2012-06-07 |
Family
ID=46171802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/077334 WO2012073870A1 (ja) | 2010-12-03 | 2011-11-28 | フードインナパネル |
Country Status (7)
Country | Link |
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US (1) | US8740291B2 (ja) |
EP (1) | EP2647552B1 (ja) |
JP (1) | JP5433795B2 (ja) |
CN (1) | CN103118924B (ja) |
BR (1) | BR112013013655B1 (ja) |
RU (1) | RU2527586C1 (ja) |
WO (1) | WO2012073870A1 (ja) |
Cited By (1)
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WO2014054099A1 (ja) * | 2012-10-01 | 2014-04-10 | 株式会社神戸製鋼所 | 車輌用フードパネル |
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JP6258108B2 (ja) * | 2014-04-09 | 2018-01-10 | 株式会社神戸製鋼所 | 車輌用フード |
EP2937267B1 (en) * | 2014-04-24 | 2017-06-14 | Volvo Car Corporation | Inner panel for a vehicle bonnet |
US9248866B2 (en) * | 2014-06-13 | 2016-02-02 | Toyota Motor Engineering & Manufacturing North America, Inc. | Hood assembly |
US9193390B1 (en) | 2014-08-21 | 2015-11-24 | Kobe Steel, Ltd. | Front cowl member for vehicle |
US9663149B2 (en) * | 2015-03-27 | 2017-05-30 | Ford Global Technologies, Llc | Vehicle hood stiffener |
US9845115B2 (en) * | 2016-02-19 | 2017-12-19 | Ford Global Technologies, Llc | One-piece closure member for a vehicle |
JP6718726B2 (ja) * | 2016-03-31 | 2020-07-08 | 株式会社神戸製鋼所 | 車両用フード |
US9914486B2 (en) * | 2016-07-07 | 2018-03-13 | Ford Global Technologies, Llc | Hood assembly incorporating a fluid reservoir |
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- 2011-11-28 RU RU2013130218/11A patent/RU2527586C1/ru active
- 2011-11-28 US US13/823,059 patent/US8740291B2/en active Active
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Also Published As
Publication number | Publication date |
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EP2647552A1 (en) | 2013-10-09 |
BR112013013655A8 (pt) | 2017-12-05 |
EP2647552A4 (en) | 2014-06-11 |
JPWO2012073870A1 (ja) | 2014-05-19 |
US8740291B2 (en) | 2014-06-03 |
US20130175827A1 (en) | 2013-07-11 |
BR112013013655A2 (pt) | 2016-09-06 |
BR112013013655B1 (pt) | 2021-07-13 |
RU2527586C1 (ru) | 2014-09-10 |
CN103118924A (zh) | 2013-05-22 |
JP5433795B2 (ja) | 2014-03-05 |
CN103118924B (zh) | 2015-06-17 |
EP2647552B1 (en) | 2015-07-15 |
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