JP2012101697A - Cowl top cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cowl top cover which can sufficiently support the load of a bonnet hood and a load applied to the cowl top cover when a hand is put thereon and can prevent the impact absorbing performance of the cowl top cover at a time when an impact load is applied thereto from being abruptly lowered during the deformation of the cowl top cover and then an excessive reaction force due to bottoming from occurring thereon.SOLUTION: A vertical wall 5 the vertical center part of which is bent rearward is formed between a hood contact part 3 supporting the bonnet hood and a bottom wall 4 attached to a vehicle body panel. A plurality of reinforcement ribs 6 are disposed on the front surface side of the vertical wall 5 in the vehicle lateral direction. The vertical center part of each reinforcement rib 6 is bent in the vehicle lateral direction to form a rib bent part 6a. The load of the bonnet hood and the load applied to the cowl top cover when a hand is put thereon can be sufficiently supported by the vertical wall 5 and the plurality of reinforcement ribs 6. When an impact load is applied to the cowl top cover from above, the impact load can be absorbed by the deformation of the vertical wall 5 and the deformation of the reinforcement ribs 6.

Description

  The present invention relates to a cowl top cover having an impact absorbing structure in an automobile that is excellent in pedestrian protection performance. In addition, regarding the front-rear direction, the up-down direction, and the vehicle width direction used in the present invention, the front-rear direction is a direction when facing the forward direction of the vehicle from the rear of the vehicle with reference to the forward direction in which the vehicle goes straight. In the vertical direction, the vertical direction is the vertical direction with respect to the vehicle, and in the vehicle width direction, the horizontal direction when the vehicle is viewed from the front is the vehicle width direction.

  When an obstacle or the like rides on the bonnet when an obstacle or the like collides when the vehicle travels, the bonnet bends downward due to an impact from the collision object. At this time, if a highly rigid vehicle-mounted component or the like is disposed below the bonnet, the collision object strongly collides with the vehicle-mounted component or the like while bending the bonnet. In order to prevent this, it is demanded that a cowl panel or a cowl top cover be provided with an impact absorbing structure that can relieve an impact force from a collision object.

  As a cowl top cover having an impact absorbing structure, a vehicle deck garnish structure described in Patent Document 1 has been proposed. FIG. 9 shows a cross-sectional view of a deck garnish (corresponding to a cowl top cover in the present invention) as viewed from the vehicle width direction as a conventional example of the vehicle body structure described in Patent Document 1 in the present invention.

  As shown in FIG. 9, the deck garnish 30 disposed between the windshield 38 and the front hood 40 is composed of a deck garnish upper 31 and a deck garnish lower 32 that extend in the vehicle width direction. . The front end side of the deck garnish upper 31 extends to the lower side of the front hood 40 and is coupled to a deck garnish lower 32 that is configured separately, and supports the front hood 40 from below. The deck garnish lower 32 is arranged below the rear end 40a of the front hood 40 and sandwiched between the deck garnish upper 31 and the cowl top inner 39.

The deck garnish lower 32 includes an upper wall portion 33 located on the deck garnish upper 31 side, a lower wall portion 34 located on the cowl top inner 39 side below the upper wall portion 33, and an upper wall portion 33 and a lower wall portion 34. And a side wall portion 35 having a vertical wall shape. When the deck garnish lower 32 is viewed from the side in the vehicle width direction, that is, the cross-sectional shape in the vehicle front-rear direction is formed in a substantially U shape that opens to the front of the vehicle body.
A rib 36 is erected between the upper wall portion 33 and the lower wall portion 34 of the deck garnish lower 32. The rib 36 is formed in a flat plate shape, and is disposed obliquely with respect to the vertical direction between the upper wall portion 33 and the lower wall portion 34. Further, a notch 37 is formed at a substantially central portion in the vertical direction on the front end surface of the rib 36. That is, the apex portion 37a of the notch 37 is configured as a fragile portion with respect to an impact from above.

  When an impact load P is applied to the deck garnish lower 32 from above, the connecting portion X with the upper wall portion 33, the lower wall portion 34, and the side wall portion 35 is deformed or destroyed and falls down, or the notch portion 37 The vicinity of the apex portion 37a is destroyed or deformed. When the ribs 36 absorb the impact load P, the ribs 36 are deformed such as falling down.

In addition, the impact load P acts on the rib 36 and simultaneously acts on the central portion 35a of the side wall portion 35 to break or deform the central portion 35a. The impact load P is also absorbed when the central portion 35a is broken or deformed. Thus, the upper wall portion 33, the lower wall portion 34
The energy absorbing portion of the deck garnish 30 is configured by the deformation of the side wall portion 35 and the rib 36.

JP 2008-30632 A

  In the invention described in Patent Document 1, since the deck garnish 30 is configured with an energy absorbing portion, the deck garnish upper 31 and the deck garnish upper 31 configured separately from the deck garnish upper 31 are included. It is the structure using.

Therefore, in order to manufacture the deck garnish 30, a mold for molding the deck garnish upper 31 and a mold for molding the deck garnish lower 32 are required. In addition, an assembly process is required for assembling the deck garnish lower 32 and the deck garnish upper 31, which are configured separately.
For this reason, when manufacturing the deck garnish 30, an increase in manufacturing price and an increase in work time occur.

  Further, the rib 36 is formed with a notch 37, and the apex portion 37a of the notch 37 is configured as a fragile portion against the impact load P from above. For this reason, it is difficult to give the rib 36 sufficient strength against an impact load from above. In addition, it is difficult to give the ribs 36 sufficient strength to sufficiently support the load of the front hood 40 and the load when the hand is put on the deck garnish 30 in a normal state.

  Furthermore, when the impact load P acts on the deck garnish 30 via the front hood 40 from above, the connection part X with the upper wall part 33, the lower wall part 34, and the side wall part 35 is destroyed and falls down, The vicinity of the apex portion 37a of the notch 37 is destroyed. In such a state, the deck garnish 30 cannot fully support the impact load P. In particular, the rib 36 is divided into two parts with the notch 37 as a boundary, and the rib 36 cannot support the downward deformation of the deck garnish 30.

  In other words, in the deck garnish 30 of Patent Document 1, the impact load acting on the front hood 40 until the connecting portion X is broken and falls or the vicinity of the apex portion 37a of the notch portion 37 is broken. It is configured to absorb P. However, after the connecting portion X is destroyed and falls down or the vicinity of the apex portion 37a of the notch 37 is destroyed, the impact load P acting on the front hood 40 is supported and absorbed by the deck garnish 30. As a result, the shock absorbing performance of the deck garnish 30 is drastically reduced. The deck garnish 30 generates an excessive reaction force due to bottoming.

  In the present invention, these conventional problems are solved, and the load of the bonnet hood and the load when the hand is put on the cowl top cover can be sufficiently supported, and an impact force is applied on the hood. The shock absorption performance of the cowl top cover at the time suddenly declines from the middle, and after that, the generation of excessive reaction force due to bottoming is prevented, and the cowl that can reduce the impact smoothly by securing the shock absorption stroke The issue is to provide a top cover.

The object of the present invention can be achieved by the inventions described in claims 1 to 5.
That is, in the present invention, a connecting portion connected to the lower end portion of the windshield is disposed at one end portion, disposed below the hood hood, a hood contacting portion that contacts the hood hood is disposed at the other end portion, and In the cowl top cover that covers between the windshield and the hood hood in the vehicle width direction,
The cowl top cover extends downward from the hood contact portion, protrudes along the vehicle width direction, and extends from the lower end of the vertical wall toward the front of the vehicle. A bottom wall attached to the vehicle body panel and at least a reinforcing rib connecting between the bottom wall and the vertical wall, and the vertical wall has a bent portion formed along the vehicle width direction. The bent portion is configured in a shape that is likely to be deformed around the bent portion with respect to an impact force from the vertical direction of the vehicle,
The reinforcing ribs have rib bending portions protruding in the vehicle width direction and formed in the vehicle front-rear direction, and a plurality of the ribs are arranged along the vehicle width direction. It is configured in a shape that tends to cause deformation around each rib bending portion with respect to the impact force from the vertical direction of the vehicle, and is based on the bent portion of the vertical wall when the impact force from the vertical direction of the vehicle acts The main feature is that it is transformed into a shape.

  In the cowl top cover according to the present invention, the bent portion is formed in a shape in which an intermediate portion in the vertical direction of the vertical wall protrudes toward the rear side of the vehicle, and the reinforcing ribs are formed on the vehicle of the vertical wall. It is arranged on the front side and is connected between the bottom wall, the vertical wall, and the hood contact portion, and the bent portions for the ribs are formed at intermediate portions in the vertical direction of the reinforcing ribs, The main characteristic is that the bending line of the bending portion for rib and the bending line of the bending portion intersect each other.

  Furthermore, in the cowl top cover according to the present invention, the vertical wall is configured as an inclined surface inclined toward the vehicle rear side from the hood contact portion toward the bottom wall, and the bent portion includes the bottom wall and the The reinforcing ribs are formed on the vehicle front side of the vertical wall by connecting the bottom wall and the vertical wall, and the rib bending portions are formed on the boundary with the vertical wall. The main feature is that the angle formed between the bottom wall and the vertical wall is divided into two equal parts.

Furthermore, the cowl top cover according to the present invention is mainly characterized in that a thin portion is formed in the bent portion.
In addition, the cowl top cover according to the present invention is characterized in that the bent portion and the bent portions for each rib are each configured as a refracting portion.

  The reinforcing rib in the present invention is not configured in a shape in which a notch is formed as in Patent Document 1. For this reason, the load of the hood hood and the load when the hand is put on the cowl top cover can be sufficiently supported by each reinforcing rib. In addition, the reinforcing rib has a rib bending portion that protrudes in the vehicle width direction and is formed in the vehicle front-rear direction.

  When an impact load acts on the cowl top cover via the hood from above, the impact load is sufficiently reduced by the deformation of the vertical wall centering on the bent portion and the deformation of the reinforcing rib centering on the rib bent portion. Can be absorbed and absorbed.

Moreover, when the impact force from above the vehicle acts, the rib bending portion is deformed into a shape based on the bending portion of the vertical wall, so that the bending point can be shared between the vertical wall and the reinforcing rib. The stress acting on the cowl top cover can be dispersed. In this way, the rigidity of the cowl top cover can be improved.

  Also, with the downward deformation of the hood hood to which the impact load is applied, the rib bent portion is deformed to the shape with the bent portion of the vertical wall as the base point, so the reinforcing rib does not stretch and the vertical wall Can be deformed around the bent portion. The cowl top cover can be deformed so as to be folded in an orderly manner without being stretched.

  Thus, since the cowl top cover can be smoothly deformed, it is possible to secure an impact absorbing stroke and to suppress generation of excessive reaction force due to bottoming. In addition, as the deformation of the vertical wall and the reinforcing rib progresses, the load is applied to the base of the reinforcing rib sequentially, so that the reaction force peak due to the cowl top cover does not occur and the reaction caused by the cowl top cover does not occur. The increase in power can be suppressed.

  Further, when the reaction force adjustment by the cowl top cover is necessary for the performance of pedestrian protection, it is possible to cope by adjusting the plate thickness of the reinforcing rib. Furthermore, since a plurality of reinforcing ribs are arranged in the vehicle width direction, when the reinforcing ribs arranged near the portion where the impact load is applied are deformed, the reinforcing ribs adjacent to the deformed reinforcing ribs gradually Will be transformed. Then, the plurality of reinforcing ribs start to be deformed sequentially, and the portion of the vertical wall in the region where the reinforcing ribs have started to be deformed is also deformed around the bent portion. Can be absorbed smoothly by the cowl top cover.

  When configured as in the invention of claim 2 of the present application, the bent line of the bent portion and the bent line of the bent portion for the rib are configured so as to intersect each other. By arranging the bending lines so as to cross each other, when the vertical wall is deformed, the reinforcing rib is pulled in the deformation direction of the vertical wall along with the deformation of the vertical wall. Will occur. Due to this twisting force, the reinforcing rib is deformed around the bent portion of the rib while causing a twisting phenomenon at least at the connecting portion between the bottom wall and the hood contact portion, that is, at the base portion of the reinforcing rib. Will occur.

  The impact load P can be absorbed from above also by the twisting phenomenon generated at the base portion of the reinforcing rib. That is, as the reinforcing rib, it is possible to absorb impact energy due to deformation around the rib bending portion and impact energy due to a twisting phenomenon. Further, in the vertical wall, it is possible to absorb impact energy due to deformation centering on the bent portion and impact energy due to torsional force acting on the reinforcing rib.

  In this way, in addition to absorbing the impact energy associated with the deformation of the bent portion of the vertical wall and the rib bent portion of the reinforcing rib, the impact energy associated with the twisting force can be absorbed. The shock absorbing performance can be maintained for a long time.

  Further, the bent portion of the vertical wall is formed in a shape in which the vertical middle portion of the vertical wall protrudes toward the rear side of the vehicle, so the bent portion is provided between the cowl top cover and the passenger compartment. The vertical wall can be deformed without being brought into contact with other members. By comprising in this way, the deformation | transformation stroke of a vertical wall is securable.

  When configured as in the invention of claim 3 of the present application, the vertical wall can be deformed around the bent portion without the reinforcing ribs being stretched. The cowl top cover can be deformed so as to be folded in an orderly manner without being stretched.

When the thin portion is formed as in the invention of claim 4, it is easy to adjust the deformation strength of the cowl top cover by adjusting the thickness of the thin portion.
When the bent portion and the rib bent portion are each configured as a refracting portion as in the invention of claim 5, the refracting direction of the vertical wall and the reinforcing rib can be set in a predetermined direction in advance.

It is the perspective view of a cowl top cover, and the expansion perspective view of the principal part. Example 1 It is II-II sectional drawing of FIG.1 (b). Example 1 It is the front view which shows the front view of a cowl top cover, and the enlarged view of the principal part. Example 1 It is an image sectional view when an impact load is applied. Example 1 It is an image front view from the front view when an impact load is applied. Example 1 It is a perspective view concerning another cowl top cover. (Example 2) It is VII-VII sectional drawing of FIG. (Example 2) It is a front view which shows the front view concerning another cowl top cover. (Example 2) It is sectional drawing of the deck garnish seen from the vehicle width direction. (Conventional example)

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. As the configuration of the cowl top cover of the present invention, in addition to the shape and arrangement described below, if the shape and arrangement can solve the problems of the present invention, the shape and arrangement are the same as those of the present invention. It can be used as a cowl top cover. For this reason, this invention is not limited to the Example demonstrated below, A various change is possible.

  The cowl top cover 1 has a configuration as shown in FIGS. 1A and 1B. As shown in FIG. 2, a connection portion connected to the lower end portion 13a of the windshield 13 is provided on one end side. Have two. The connecting portion 2 holds the lower end portion 13a of the windshield 13. Further, a hood contact portion 3 that contacts the lower surface of the hood inner 12a of the hood hood 12 is provided on the other end side.

  As shown in FIG. 2, a seal member 9 with which the hood inner 12a is pressed is provided on the upper surface of the hood contact portion 3. The seal member 9 prevents rainwater and the like from entering a front compartment (not shown) disposed below the hood hood 12.

  As shown in FIGS. 1A and 3, the cowl top cover 1 is formed with a warper mounting portion 7 that houses a drive shaft portion of a wiper arm (not shown), and the hood contact portion 3 has An air intake 8 for taking in outside air is formed in the air box. 1 (a) and 3 (a) show a view in which only one air intake 8 is formed. However, the cowl top cover 1 on the left side in FIG. An air intake 8 is formed.

  As shown in FIGS. 1 to 3, the vertical wall 5 is configured to extend downward from the hood contact portion 3 and project along the vehicle width direction. As shown in FIG. 2, the bottom wall 4 extends from the lower end of the vertical wall 5 toward the front of the vehicle, and the bottom wall 4 is attached to the vehicle body panel 11. As shown in FIGS. 1 to 3, a reinforcing rib 6 connecting the bottom wall 4, the vertical wall 5, and the hood contact portion 3 is provided along the vehicle width direction on the front side of the vertical wall 5. A plurality are formed.

  The main body portion from the connecting portion 2 to the bottom wall 4 and the reinforcing rib 6 in the cowl top cover 1 are manufactured by integral molding using a relatively rigid resin material (for example, ABS resin, modified PPO resin, etc.). The reinforcing rib 6 is configured to be connected to the upper surface of the bottom wall 4, the front-side surface of the vertical wall 5, and the lower surface of the hood contact portion 3.

  As shown in FIG. 2, the vertical wall 5 has an intermediate part of the vertical wall 5 protruding toward the air introduction part 10 on the rear side of the vehicle, and the side view from the vehicle width direction is refracted into a square shape. It is configured in shape. The air introduction unit 10 is a region where air taken in from the air intake 8 formed in the cowl top cover 1 is supplied, and the air taken into the air introduction unit 10 is supplied to a compartment or the like.

  Further, since the bent portion 5a of the vertical wall 5 is configured to protrude toward the air introduction portion 10, the vertical wall 5 starts to be deformed by an impact load from above, and the deformation further proceeds. However, the bending portion 5a does not come into contact with another member and the deformation does not stop, and a sufficient deformation stroke can be ensured when the vertical wall 5 is deformed.

  Further, in order to form the bent portion 5a refracted into a square shape of the vertical wall 5 as the thin portion 5b, the vehicle front side of the bent portion 5a is formed as a concave portion. The bent portion 5a is formed along the vehicle width direction of the vehicle.

The plate-shaped reinforcing rib 6 is configured with a plate thickness that is thinner than the plate thickness of the above-described main body portion of the cowl top cover 1, and has a plate thickness substantially equal to the plate thickness of the thin portion 5b of the bent portion 5a. Can be configured. As will be described later, when the reaction force adjustment by the cowl top cover 1 is necessary for the performance of pedestrian protection, the plate thickness of the reinforcing rib 6 and the plate thickness of the thin portion 5b are appropriately adjusted. Correspondence becomes possible.
The plate thickness of the reinforcing rib 6 and the plate thickness of the thin portion 5b are not necessarily configured to be substantially the same plate thickness, and may be configured as appropriate plate thicknesses having different plate thicknesses. it can.

  As shown in FIGS. 1 and 3, the reinforcing rib 6 is formed in a shape in which an intermediate portion of the reinforcing rib 6 protrudes in the vehicle width direction and the front view seen from the vehicle front side is refracted into a square shape. Yes. The bending line of the rib bending portion 6a refracted into a square shape and the bending line of the bending portion 5a are configured to intersect each other.

  In the illustrated example, the plurality of reinforcing ribs 6 are configured such that rib bent portions 6a refracted in a square shape are arranged symmetrically with respect to the center portion of the cowl top cover 1 in the vehicle width direction. . However, the refraction direction of the rib bending portion 6a is not limited to the illustrated example. For example, the rib bending portion 6a of each set of reinforcing ribs 6 adjacent in the vehicle width direction is in the vehicle width direction. They may be arranged so as to be opposite to each other, or may be other appropriate arrangement configurations. Even in this case, it is necessary to arrange the rib bending portions 6a of the reinforcing rib 6 deformed by the impact load from above so as not to contact each other.

  As shown in FIG. 3, standing portions 6 c are formed on both ends of the reinforcing rib 6. By forming standing portions 6c at both ends of the reinforcing rib 6, the reinforcing rib 6 is attached to the cowl top cover 1 in a state substantially orthogonal to the upper surface of the bottom wall 4 and the lower surface of the hood contact portion 3. It can be integrally formed with the main body portion of the. As a result, the connection strength between the base portions 6b at both ends of the reinforcing rib 6 and the upper surface of the bottom wall 4 and the lower surface of the hood contact portion 3 can be increased.

Next, an example in which an impact load W from the impact load body 20 is applied to the hood 12 from above is described with reference to FIGS. 4 and 5. Hereinafter, the case where the impact load W from above is applied to the bonnet hood 12 will be described. However, even if the impact load W is directly applied to the cowl top cover 1, the deformation described below will be described. The cowl top cover 1 performs the same deformation as that described above, and can exert an impact absorbing action against the impact load W.

As shown in FIGS. 4 and 5, when an impact load W from above is applied to the hood 12, the hood contact portion 3 of the cowl top cover 1 is deformed by the deformation of the hood 12 and the deformation of the seal member 9. A downward deformation occurs.
That is, since the bottom wall 4 of the cowl top cover 1 is attached to the vehicle body panel 11, the vertical wall 5 is deformed so as to be folded around the bent portion 5a. Then, the bent portion 5a is deformed toward the air introduction portion 10 with the bent portion 5a as the center so that the hood contact portion 3 and the bottom wall 4 are close to each other.

  With the deformation of the vertical wall 5, the reinforcing rib 6 is also deformed so as to be folded around the rib bending portion 6a. At this time, as the vertical wall 5 is deformed, the connecting portion between the reinforcing rib 6 and the vertical wall 5 is pulled in the deformation direction of the vertical wall 5. Further, a twisting force accompanying the deformation of the vertical wall 5 is generated in the reinforcing rib 6. By this twisting force, the reinforcing rib 6 causes the twisting phenomenon at the connecting portion between the bottom wall 4 and the hood contact portion 3, i.e., the base portion 6b of the reinforcing rib 6, while the rib bending portion 6a. Deformation centering on will also occur.

  As described above, the deformation of the vertical wall 5 and the deformation of the reinforcing rib 6 can absorb the impact energy due to the impact load W applied to the bonnet hood 12 from above. Moreover, as the deformation of the reinforcing rib 6, in addition to the deformation that is simply folded, deformation due to twisting force also occurs, so the energy absorption performance by the reinforcing rib 6 is higher than the energy absorption performance by only the folding deformation. be able to.

  Further, when the impact load W is applied, the rib bent portion 6a is deformed into a shape with the bent portion 5a of the vertical wall 5 as a base point, so the bent point of the vertical wall 5 and the bent point of the reinforcing rib 6 are The wall 5 and the reinforcing rib 6 can be shared, and the stress acting on the cowl top cover 1 can be distributed between the vertical wall 5 and the reinforcing rib 6. Due to such a configuration, the rigidity of the cowl top cover 1 can be improved.

  As described above, as the hood hood 12 to which the impact load W is applied is deformed downward, the rib bent portion 6a of the reinforcing rib 6 is deformed into a shape based on the bent portion 5a of the vertical wall 5. Therefore, the vertical wall 5 can be deformed around the bent portion 5a without the reinforcing rib 6 being stretched. The cowl top cover 1 is not stretched and can be deformed so that it can be folded in an orderly manner.

  Thus, since the cowl top cover 1 can be smoothly deformed, it is possible to ensure a shock absorbing stroke and to suppress generation of an excessive reaction force due to bottoming. In addition, as the deformation of the vertical wall 5 and the reinforcing rib 6 progresses, the load acts on the base portion 6b of the reinforcing rib 6 in sequence, so that the reaction force peak due to the cowl top cover 1 does not occur. A sudden increase in reaction force due to the cowl top cover 1 can be suppressed.

Also, if the reaction force adjustment by the cowl top cover 1 is necessary for the performance of pedestrian protection, it can be handled by adjusting the thickness of the reinforcing rib 6 and the thickness of the bent portion 5a of the vertical wall 5 become. Furthermore, since a plurality of reinforcing ribs 6 are arranged in the vehicle width direction, if the reinforcing ribs 6 arranged near the portion where the impact load W is applied are deformed, the reinforcement adjacent to the deformed reinforcing ribs 6 is provided. The rib 6 is also gradually deformed. Then, the plurality of reinforcing ribs 6 will start to deform sequentially, and the part of the vertical wall 5 in the region where the reinforcing ribs 6 have started to deform will also be deformed around the bent portion 5a. Therefore, the impact load W can be absorbed smoothly by the cowl top cover 1.

  In the first embodiment, the configuration in which the bent portion 5a is formed at the center in the vertical direction of the vertical wall 5 and the reinforcing rib 6 is connected to the hood contact portion 3, the vertical wall 5, and the bottom wall 4 has been described. In the second embodiment, as shown in FIGS. 6 to 8, the vertical wall 15 is configured as an inclined surface that is inclined downward from the hood contact portion 3 to the vertical wall 5 toward the rear side, and the bent portion 15 a is formed as the vertical wall 15. The reinforcing rib 16 is configured to connect the vertical wall 15 and the bottom wall 4 on the bent portion 15a side.

  As shown in FIG. 6, the rib bent portion 16a formed on the reinforcing rib 16 protrudes in the vehicle width direction and is formed in a direction that bisects the angle formed by the vertical wall 15 and the bottom wall 4. ing. Other configurations are the same as those in the first embodiment. Therefore, in the description regarding the second embodiment, the description of the members is omitted by using the member names and the member codes used in the description of the first embodiment regarding the same configuration as the first embodiment.

  The rib bending portions 16a of the reinforcing ribs 16 arranged in the vehicle width direction are formed in a direction that bisects the angle formed by the vertical wall 15 and the bottom wall 4, so that an impact from above is applied. When the vertical wall 15 is folded around the bent portion 15a when a load is applied, no twisting force acts on the reinforcing rib 16 as in the first embodiment, and the same as when the vertical wall 15 is folded. Will be folded.

  That is, the folding operation of the vertical wall 15 and the reinforcing rib 16 is performed smoothly. Therefore, in order to enhance the shock absorbing performance of the cowl top cover 1 as in the first embodiment, the plate thickness and the reinforcing rib 16 in the thin wall portion 15b of the bent portion 15 are compared with those in the first embodiment. Each plate thickness can be made slightly thicker.

As shown in FIG. 8 (a), the plurality of reinforcing ribs 16 are symmetrically arranged with rib bending portions 16a refracted in a square shape with the center portion of the cowl top cover 1 in the vehicle width direction as a boundary. It has a configuration. However, as described in the first embodiment, the refraction direction of the rib bending portion 16a is not limited to the illustrated example. For example, the rib bending in each pair of reinforcing ribs 16 adjacent to each other in the vehicle width direction. The portions 16a may be arranged so as to be opposite to each other in the vehicle width direction, or other appropriate arrangement configurations may be adopted.
Even in this case, it is necessary to dispose the rib bending portions 16a of the reinforcing rib 16 deformed by the impact load from above so as not to contact each other.

  As shown in FIG. 4, when an impact load W from above is applied to the hood hood 12 (not shown), for example, as shown in FIG. 8 (b), the vertical wall 15 and the hood contact portion 3 The angle formed between them and the angle formed between the vertical wall 15 and the bottom wall 4 are narrowed, and the reinforcing rib 16 is refracted so as to be folded around the rib bending portion 16a. The impact load W can be absorbed by the deformation of the vertical wall 15 and the deformation of the reinforcing rib 16.

  The cowl top cover 1 according to the present invention has been described above by taking the above embodiment as an example. However, the present invention is not limited to the above embodiment, and various other embodiments are adopted without departing from the gist of the present invention. can do.

For example, in the description of each of the embodiments described above, the bent portions 5a and 15a and the rib bent portions 6a and 16a have been described with respect to the refracted shape. However, the present invention provides the bent portions 5a and 15a and the rib bent portion. The shape is not limited to the shape in which 6a and 16a are refracted, and includes shapes in which the bent portions 5a and 15a and the bent portions 6a and 16a for ribs are curved. Even if the bent portions 5a and 15a and the rib bent portions 6a and 16a are curved, the cowl top cover 1 can sufficiently exhibit an impact absorbing function.

  The technical idea of the present invention can be applied to those that absorb and mitigate impact by deformation.

   DESCRIPTION OF SYMBOLS 1 ... Cowl top cover, 4 ... Bottom wall, 5 ... Vertical wall, 5a ... Bending part, 6 ... Reinforcement rib, 6a ... Bending part for rib, 12 ... Bonnet Hood, 15 ... Vertical wall, 15a ... Bent part, 15c ... Thin wall part, 16 ... Reinforcing rib, 16a ... Bending part for rib, 20 ... Collision load body, 30 ... -Deck garnish, 31 ... Deck garnish upper, 32 ... Deck garnish lower, 36 ... Ribs, 38 ... Front windshield, 40 ... Front hood, P, W ... Impact load, X: Connection part.

Claims (5)

A connecting portion connected to the lower end portion of the windshield is disposed at one end portion, disposed below the bonnet hood, and a hood contact portion that contacts the bonnet hood is disposed at the other end portion, and the windshield and the bonnet In the cowl top cover that covers the space between the hood across the width of the vehicle,
The cowl top cover extends downward from the hood contact portion, protrudes along the vehicle width direction, and extends from the lower end of the vertical wall toward the front of the vehicle. A bottom wall attached to the vehicle body panel, and a reinforcing rib connecting at least the bottom wall and the vertical wall,
The vertical wall has a bent portion formed along the vehicle width direction, and the bent portion is configured to be easily deformed around the bent portion with respect to an impact force from the vertical direction of the vehicle. And
The reinforcing ribs have rib bending portions protruding in the vehicle width direction and formed in the vehicle front-rear direction, and a plurality of the reinforcing ribs are disposed along the vehicle width direction,
Each of the bent portions for ribs is formed in a shape that easily deforms around the bent portion for each rib with respect to an impact force from the vertical direction of the vehicle, and when the impact force from the vertical direction of the vehicle is applied, A cowl top cover characterized by being deformed into a shape based on a bent portion of a vertical wall. The bent portion is formed in a shape in which an intermediate portion in the vertical direction of the vertical wall protrudes toward the rear side of the vehicle,
Each of the reinforcing ribs is disposed on the vehicle front side of the vertical wall, and connects between the bottom wall, the vertical wall, and the hood contact portion,
Each of the rib bending portions is formed at an intermediate portion in the vertical direction of each of the reinforcing ribs, and the bending line of the rib bending portion and the bending line of the bending portion intersect each other. The cowl top cover according to Item 1. The vertical wall is configured as an inclined surface inclined toward the vehicle rear side from the hood contact portion toward the bottom wall,
The bent portion is formed at a boundary portion between the bottom wall and the vertical wall,
Each of the reinforcing ribs is disposed on the vehicle front side of the vertical wall by connecting the bottom wall and the vertical wall.
2. The cowl top cover according to claim 1, wherein each of the bent portions for ribs is formed in a direction that bisects an angle formed by the bottom wall and the vertical wall.   The cowl top cover according to any one of claims 1 to 3, wherein the bent portion is formed with a thin portion.   The cowl top cover according to any one of claims 1 to 4, wherein the bent portion and the bent portion for each rib are each configured as a refracting portion.