JP2007055376A - Hood structure for coping with collision - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood structure for coping with a collision capable of promptly and stably operating at emergency by dividing a hood and decreasing the inertia mass of each piece. <P>SOLUTION: The hood 10 is divided into a plurality of pieces, and these divided hoods 10F, 10R are lifted by a lifting mechanism 20. Therefore, the inertia mass of each divided hood 10F, 10R is decreased, so that the divided hoods 10F, 10R can be promptly lifted to a predetermined position. Furthermore, the divided hoods 10F. 10R can be stably lifted by suppressing a hunting phenomenon. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a collision-compatible hood structure that alleviates an impact when a collision object interferes with the hood.

Conventionally, when a vehicle collides with a pedestrian, the hood is flipped up, and the distance between the hood and the vehicle body side structure existing below the hood is increased so that the pedestrian interferes with the hood. A collision hood structure has been proposed in which the amount of deformation of the hood is increased to enhance the impact absorption effect on pedestrians (see, for example, Patent Document 1).
JP 2004-131037 A (page 5, FIG. 2)

  However, in such a conventional collision-compatible hood structure, the entire hood is integrally formed, and since the integrated hood is lifted as a whole, the inertial mass of the hood is increased.

  For this reason, it takes a long time to lift the hood to a predetermined collision response position at the time of a collision, and there is a possibility that the response in an emergency will be delayed. Also, once lifted, the hood causes a hunting phenomenon due to a large inertial mass and flutters.

  Therefore, the present invention provides a collision-compatible hood structure that can be quickly and stably operated in an emergency by dividing the hood into a plurality of parts to reduce the respective inertial masses.

  The present invention relates to a collision-compatible hood structure including a hood that covers an upper side of a front compartment provided in a front portion of a vehicle, and a lifting mechanism that lifts the hood in the event of a vehicle collision. The most important feature is that at least one of the above is lifted through a lifting mechanism.

  According to the present invention, since the hood is divided into a plurality of pieces, each of the divided hoods can reduce its inertial mass, and the divided hood having the reduced inertial mass is lifted by the lifting mechanism. While being able to lift quickly to a predetermined position, the division | segmentation hood can be lifted stably, suppressing a hunting phenomenon.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 4 show an embodiment of a collision hood structure according to the present invention, FIG. 1 is a cross-sectional side view showing a mounting state of the hood, FIG. 2 is a cross-sectional side view showing an operating state of the hood, and FIG. FIG. 4 is a perspective view showing an operating state of the lifting mechanism.

  The collision hood structure of the present embodiment is applied to a hood 10 that covers the upper side of a front compartment 2 such as an engine room provided at the front of an automobile 1 as shown in FIG. Is provided with a lifting mechanism 20.

  In the front compartment 2, front side members 3 extend in the vehicle front-rear direction on both the left and right sides, and when the front compartment 2 is an engine room, the front side member 3 has an engine E serving as a vehicle body side structure. Is mounted directly or via a subframe or the like. In the figure, 4 is a strut tower.

  Here, in the present embodiment, the hood 10 is divided into a plurality of parts, and the divided hoods 10F and 10R are lifted through the lifting mechanism 20, respectively.

  The divided hoods 10F and 10R are constituted by a front divided hood 10F and a rear divided hood 10R which are divided into two in the front-rear direction.

  That is, the front and rear divided hoods 10F and 10R are formed by dividing the front and rear divided hoods 10F and 10R into two in the front-rear direction from a substantially central portion in the front-rear direction. A double structure is formed by the panel 10in.

  The front / rear split hoods 10F and 10R are configured to spring up the vehicle rear portions 10Fr and 10Rr with the vehicle front portions 10Ff and 10Rf as fulcrums.

  That is, the front split hood 10F is pivotally attached to the radiator core support 5 via the front hinge 11 at the front left and right sides, and the rear split hood 10R has the front left and right sides at the left and right sides. A pair of rear hinges 12 are pivotally attached to a hood ridge member 2FM extending in the front-rear direction on the vehicle body side, for example, on the left and right sides of the upper end of the front compartment 2.

  In the present embodiment, a lifting mechanism 20 is provided for each of the front and rear split hoods 10F and 10R, and the rear portions 10Fr and 10Rr of the front and rear split hoods 10F and 10R are flipped upward as shown in FIG. Each lifting mechanism 20 is operated by a common actuator 28.

  That is, the front lifting mechanism 20F of the front split hood 10F includes a first link 22 having an intermediate portion pivotally supported on the vehicle body side via a pin 21 as shown in FIG. The upper end portion 22a of the front link hood 10F is connected to a guide bracket 23 attached to the inner surface (inner panel 10in) of the vehicle rear portion 10Fr so as to be movable back and forth, and the lower end portion 22b of the first link 22 is further connected to the pin 21. It protrudes downward, and the first link 22 is greatly inclined backward and downward in the vehicle as it goes to the lower end 22b.

  On the other hand, the rear lifting mechanism 20R of the rear split hood 10R has substantially the same configuration as the front lifting mechanism 20F, and includes a second link 25 that pivotally supports an intermediate portion on the vehicle body side via a pin 24. The upper end 25a of the second link 25 is connected to a guide bracket 26 attached to the inner surface (inner panel 10in) of the rear vehicle hood 10F of the rear divided hood 10F so as to be movable back and forth, and the lower end 25b of the second link 25 is The second link 25 protrudes further downward than the pin 24, and is greatly inclined forward and downward as the vehicle goes to the lower end 25b.

  The actuator 28 includes a cylinder 28 that is positioned between the first and second links 22 and 25 and is fixed to the vehicle body side, for example, the hood ridge member 2FM. As shown in FIGS. An operating rod 28a protrudes and descends downward from 28, and a pressing portion 28b is provided at the tip (lower end) of the operating rod 28a.

  The lower end 22 b of the first link 22 and the lower end 25 b of the second link 25 are intersected, and the pressing portion 28 b of the actuator 28 is brought into contact with the upper side of the intersecting portion 27.

  The actuator 28 shortens the operating rod 28a when the front / rear split hoods 10F, 10R are in the normal state (closed state) shown in FIGS. 1 and 3, and the first and second links 22, 25 are respectively horizontal. When the operating rod 28a is protruded in this state, the first and second links 22 and 25 are moved downward by pushing down the intersection 27 as shown in FIGS. It pivots in the direction of rising around the pins 21 and 24.

  Then, as shown in FIG. 2, the upper end portion 22a of the first link 22 moves rearward along the guide bracket 23, and the vehicle rear portion 10Fr of the front split hood 10F is flipped upward around the front hinge 11, The upper end portion 25a of the second link 25 moves forward along the guide bracket 26, and flips the vehicle rear portion 10Rr of the rear split hood 10R upward about the rear hinge 12.

  By the way, the lifting mechanism 20 is configured by arranging a pair of first and second links 22 and 25 and an actuator 28 so as to be symmetrical on both the left and right sides of the front compartment 2. The rear divided hoods 10F and 10R are arranged outside the collision area effective for absorbing the impact.

  In other words, the central portions of the divided hoods 10F and 10R are effective regions for shock absorption, and in the present embodiment, the central portions are removed and arranged on the left and right side portions of the divided hoods 10F and 10R.

  According to the collision-compatible hood structure of the present embodiment with the above configuration, the hood 10 is divided into a plurality of parts and is configured by the front divided hood 10F and the rear divided hood 10R. Therefore, the inertial mass of each divided hood 10F, 10R is reduced. can do.

  Therefore, since the divided hoods 10F and 10R having the reduced inertial mass can be lifted (bounced up) by the lifting mechanism 20, each of the divided hoods 10F and 10R can be quickly lifted up to a predetermined position and hunting is performed. The divided hoods 10F and 10R can be lifted stably while suppressing the phenomenon.

  Further, since the divided hoods 10F and 10R can change the strength and rigidity of the divided hoods 10F and 10R according to the magnitude of the impact force at the time of the collision which varies depending on the approach direction and the approach distance of the collision object, the divided hoods 10F and 10R. Therefore, it is not necessary to increase the strength unnecessarily, and as a result, the weight of the vehicle can be reduced and the increase in cost can be suppressed.

  Further, in the present embodiment, in addition to the above-described effects, the divided hoods 10F and 10R are configured by a front divided hood 10F and a rear divided hood 10R that are divided into two in the front-rear direction. It becomes a direction, a collision target object can be made to interfere reliably in any one of those front and back division | segmentation hoods 10F and 10R, and the effect of this invention can be enjoyed efficiently.

  Furthermore, since the front and rear split hoods 10F and 10R jump up the vehicle rear portions 10Fr and 10Rr with the respective vehicle front portions 10Ff and 10Rf as fulcrums, the respective split hoods 10F and 10R are made to collide with each other at the time of collision. Can be inclined in a direction opposite to the direction of entering the hood 10, so that the collision object can be captured by any one of the divided hoods 10 </ b> F and 10 </ b> R.

  Further, since the vehicle rear portions 10Fr, 10Rr of the front / rear split hoods 10F, 10R are flipped up in this way, the front hinge 11 of the front split hood 10F and the vehicle rear portion of the rear split hood 10R as shown by a two-dot chain line in FIG. The vehicle rear portion 10Fr of the front divided hood 10F can be jumped up by a predetermined height h from the imaginary line L connecting 10Rr.

  That is, the imaginary line L corresponds to the conventional flip-up hood position, and the front split hood 11 can be flipped up by the predetermined height h as compared with the conventional hood position. Since the distance between the front split hood 11 and the vehicle body side structure such as the engine E positioned below the front split hood 11 can be increased, the amount of deformation of the front split hood 11 can be increased to absorb the impact on the collision object. Can be further increased.

  Further, since the lifting mechanism 20 is provided on each of the front and rear split hoods 10F and 10R, and the respective lifting mechanisms 20 are operated by a common actuator 28, the front and rear split hoods 10F and 10R can be easily connected to each other at the time of a collision. According to the configuration, the actuators can be flipped up synchronously, and a single actuator 28 can be used for the plurality of lifting mechanisms 20, so that weight reduction and cost reduction can be achieved.

  Furthermore, since the lifting mechanism 20 is disposed outside the collision area effective for the impact absorption of the front and rear divided hoods 10F and 10R, the shock absorption area of each divided hood 10F and 10R can be set wide.

  By the way, although this invention was demonstrated taking the example for the said embodiment, various other embodiment can be employ | adopted in the range which does not deviate from the summary of this invention, without being restricted to this embodiment, for example, food | hood 10 The division direction and the number of divisions can be arbitrarily set according to need, and the division hood is not limited to the method of raising the rear part of the vehicle, but the method of lifting the whole division hood or the method of raising the front part of the vehicle Further, it may be lifted by other methods.

The cross-sectional side view which shows the attachment state of the hood in one Embodiment of this invention. The cross-sectional side view which shows the operating state of the hood in one Embodiment of this invention. The perspective view which shows the lifting mechanism in one Embodiment of this invention. The perspective view which shows the operation state of the lifting mechanism in one Embodiment of this invention.

Explanation of symbols

10 Hood 10F Front split hood 10R Rear split hood 20 Lifting mechanism 28 Actuator

Claims (5)

In a collision-compatible hood structure comprising: a hood that covers an upper side of a front compartment provided at the front of the vehicle; and a lifting mechanism that lifts the hood in the event of a vehicle collision,
A collision-compatible hood structure, wherein the hood is divided into a plurality of parts and at least one of the divided hoods is lifted through a lifting mechanism.   The collision-compatible hood structure according to claim 1, wherein the divided hood includes a front divided hood and a rear divided hood that are divided into two in the front-rear direction.   The collision-compatible hood structure according to claim 2, wherein the front divided hood and the rear divided hood have their rear parts flipped up with the front part of each vehicle as a fulcrum.   The collision hood structure according to any one of claims 1 to 3, wherein each of the divided hoods is provided with a lifting mechanism, and each lifting mechanism is operated by a common actuator. The collision-compatible hood structure according to any one of claims 1 to 4, wherein the lifting mechanism is disposed outside a collision area effective for absorbing the shock of the divided hood.

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