JP4967540B2 - Vehicle cowl structure - Google Patents

Description

  The present invention relates to a cowl structure for a vehicle.

  Conventionally, in a cowl structure of an automobile, a shielding wall (partition wall) is provided at the center of the cowl box with a box-shaped cross section in the vehicle width direction. What was divided into the direction other side is known (for example, refer to patent documents 1).

In this cowl structure, an outside air introduction duct of an air conditioner is provided on one side of the partition wall in the vehicle width direction, and hot air discharged from the engine room is introduced on the other side of the partition wall in the vehicle width direction. This prevents hot air discharged from the engine room from entering the outside air introduction duct of the air conditioner.
JP-A-8-127365

  By the way, when an impact force acts on the cowl box from above, the impact force can be absorbed by deforming the upper wall of the cowl box. However, in the cowl structure configured as described above, since the partition wall is provided in the center portion in the vehicle width direction of the cowl box, the partition wall is not provided with a large resistance against deformation of the upper wall. It needs to be weakened. On the other hand, it is necessary to ensure the rigidity of the partition wall in a normal use state, and the design of the partition wall becomes complicated.

  An object of the present invention is to obtain a vehicle cowl structure that can easily design a partition wall in consideration of the above facts.

Cowl structure for a vehicle according to the invention of claim 1 includes a cowl main body provided along the vehicle width direction on the lower side of the windscreen, provided on the upper side of the cowl main body, and Kaururoa said cowl body has An upper wall that forms a cowl space therebetween, and is attached to the cowl body or the upper wall by a breaking pin or an adhesive, and partitions the cowl space into one side in the vehicle width direction and the other side in the vehicle width direction ; The lower end is arranged offset with respect to the vertical direction of the vehicle, and when the impact force of a predetermined value or more is applied to the upper wall, the breaker pin breaks or the adhesive part peels off to attach the attachment And a partition wall that is released from the state and rotates around the lower end portion so as to fall along the cowl lower .

In the vehicle cowl structure according to claim 1, the cowl space formed between the cowl main body and the upper wall is separated from one side in the vehicle width direction by a partition wall attached between the cowl main body and the upper wall. It is partitioned off from the other side in the vehicle width direction. When the partition wall is subjected to an impact force greater than or equal to a predetermined value, the partition wall is released from the attached state and falls down, so that the top wall can be deformed regardless of the partition wall. Accordingly, there is no need to moderately weaken the partition wall, thereby facilitating the design of the partition wall.
Moreover, in this cowl structure, since the upper end and the lower end are offset with respect to the vertical direction of the vehicle, when an impact force acts on the upper end of the partition wall, the lower end ( Rotation force around the fulcrum when falling down acts. For this reason, the partition wall can be easily brought down by the rotational force.

  A cowl structure for a vehicle according to a second aspect of the present invention is the cowl structure for a vehicle according to the first aspect, wherein the partition wall is attached obliquely with respect to the vertical direction of the vehicle. .

  In the cowl structure for a vehicle according to claim 2, since the partition wall is attached in advance obliquely with respect to the vertical direction of the vehicle, when an impact force of a predetermined value or more acts on the upper wall, the partition wall Can be easily defeated.

Cowl structure of a vehicle according to the invention described in claim 3 is the cowl structure according to claim 1 or claim 2, wherein the partition wall has the overall and the vehicle overall upper and lower ends It is characterized by being offset in the vehicle width direction with respect to the vertical direction.

  As described above, in the vehicle cowl structure according to claim 1 of the present invention, the design of the partition wall can be easily set.

  In the cowl structure for a vehicle according to claim 2 of the present invention, the partition wall can be easily brought down.

  In the cowl structure for a vehicle according to claim 3 of the present invention, the partition wall can be easily brought down.

<First Embodiment>
FIG. 1 is a perspective view of a partial configuration of an automobile 12 (vehicle) configured by applying the cowl structure of a vehicle according to the first embodiment of the present invention. In the figure, the arrow FR indicates the vehicle front direction, the arrow UP indicates the vehicle upward direction, and the arrow W indicates the vehicle width direction.

  The automobile 12 according to the first embodiment has a cowl body 18 provided between the windshield 14 and the engine hood 16. The cowl body 18 is disposed below the windshield 14 along the vehicle width direction.

  As shown in FIG. 2, the cowl main body 18 has a cowl lower 18 </ b> A, and the cowl lower 18 </ b> A is connected to an upper end portion of a dash panel (not shown) that partitions the engine room and the vehicle compartment of the automobile 12. ing. The lower end of the cowl inner 18B is connected to the vehicle rear side end of the cowl lower 18A, and the cowl inner 18B is erected upward. The lower end of the cowl outer 18C is connected to the upper end of the cowl inner 18B, and the lower end of the windshield 14 is connected to the upper end of the cowl outer 18C. The cowl lower 18A and the cowl outer 18C are extended toward the vehicle front side with respect to the cowl inner 18B, and the cowl lower 18A protrudes toward the vehicle front side from the cowl outer 18C.

  On the upper side of the cowl body 18, a cowl louver 20 as an upper wall is provided along the vehicle width direction. The cowl louver 20 has a vehicle front side end connected to the vehicle front side end of the cowl lower 18 </ b> A, and a vehicle rear side end connected to the lower end of the windshield 14.

  A cowl space 22 extending along the vehicle width direction is formed between the cowl body 18 and the cowl louver 20, and a plate-like partition wall 24 is provided in the cowl space 22. The partition wall 24 is formed in an irregular shape corresponding to the cross-sectional shape of the cowl space 22, and is attached to the center portion in the vehicle width direction of the cowl body 18. Therefore, the cowl space 22 is separated by a partition wall 24 on one side in the vehicle width direction (driver seat side in the first embodiment, left side in FIG. 2) and on the other side in the vehicle width direction (main In the first embodiment, it is partitioned into the other side cowl space 22B on the passenger seat side and the right side in FIG.

  The one-side cowl space 22A communicates with the engine room, and hot air discharged from the engine room is introduced into the one-side cowl space 22A. The hot air introduced into the one-side cowl space 22A is discharged toward the windshield 14 through a hot-air discharge hole 26 formed on one side of the cowl louver 20 in the vehicle width direction.

  An outside air introduction port 28 is provided on the other side of the cowl louver 20 in the vehicle width direction, and outside air is introduced into the other side cowl space 22B. The outside air introduced into the other cowl space 22B enters a duct (not shown) through an outside air introduction hole 30 formed in the cowl body 18 and is sent to an air conditioner (not shown) mounted on the automobile 12. Yes.

  Here, in the first embodiment, the partition wall 24 described above is inclined with respect to the cowl body 18 while being inclined with respect to the vertical direction (vertical direction) of the automobile 12, as shown in FIG. It is attached so that it can be removed. For this reason, the partition wall 24 is arranged such that the upper end portion and the lower end portion are offset in the vehicle width direction with respect to the vertical direction of the automobile 12. Further, the upper end portion of the partition wall 24 is in contact with the lower surface of the cowl louver 20. For this reason, for example, an object 32 (see FIG. 4; FIG. 4 omits the illustration of the cowl louver 20) collides with the cowl louver 20 (see arrow A in FIG. 4), and the cowl louver 20 has an impact force of a predetermined value or more. When acting, an impact force directed downward is applied to the upper end portion of the partition wall 24, and a rotational force having the lower end portion as a fulcrum is applied to the partition wall 24. In this case, the partition wall 24 is released from the attached state with respect to the cowl body 18 by the impact force (rotational force), and falls down as shown in FIG. 4 (see arrow B in FIG. 4).

  As a method for attaching the partition wall 24 to the cowl body 18, for example, a breaking pin provided on the partition wall 24 is inserted into a hole formed in the cowl body 18, thereby supporting the partition wall 24 in the inclined state. It is good also as a structure. In this case, the attachment state with respect to the cowl main body 18 of the partition wall 24 is cancelled | released by a fracture | rupture pin being fractured | ruptured by the said impact force. Moreover, it is good also as a structure which supports the partition wall 24 in the said inclination state by adhere | attaching the partition wall 24 and the cowl main body 18 partially. In this case, the attachment state of the partition wall 24 with respect to the cowl body 18 is released by peeling off the adhesive portion by the impact force.

  In addition, a flange is provided on the outer peripheral portion of the partition wall 24, and this flange is attached to the cowl louver 20 at an upper portion and a lower portion in a state where the partition wall 24 is obliquely attached to the cowl body 18. The lower wall and the upper surface of the cowl lower 18 </ b> A are set in parallel with each other, and the cowl space 22 is airtightly partitioned by the partition wall 24.

  Next, the operation of the first embodiment will be described.

  In the first embodiment, a cowl space 22 formed between the cowl main body 18 and the cowl louver 20 is divided into a first cowl space 22A and a second cowl space 22B by a partition wall 24 attached to the cowl main body 18. It is partitioned. Therefore, the hot air introduced into the one side cowl space 22A is prevented from entering the outside air introduction hole 30 provided on the other side cowl space 22B side.

  Moreover, the partition wall 24 is attached to the cowl body 18 in an inclined state with respect to the automobile 12, and is attached to the cowl body 18 when an impact force of a predetermined value or more acts on the cowl louver 20 from above. The state is released and it falls. Therefore, since the cowl louver 20 can be deformed regardless of the partition wall 24, the cowl louver 20 is appropriately deformed to absorb shock while sufficiently securing the rigidity of the partition wall 24 in a normal use state. Can do.

  As described above, in the first embodiment, when the impact force is applied to the cowl louver 20, the partition wall 24 is not deformed but the partition wall 24 itself is tilted. Therefore, it is not necessary to achieve both a moderate weakening of the partition wall 24 and securing of rigidity in a normal use state, thereby making it easy to design and manufacture the partition wall 24.

  Further, in the case of the configuration in which the partition wall 24 is deformed, there is a difference in the impact absorption efficiency of the cowl louver 20 between the part where the partition wall 24 is provided and the other parts. In the first embodiment, It can suppress that a difference arises in the impact absorption efficiency of the cowl louver 20 by the difference in the site | part to which an impact force acts.

  Moreover, in the first embodiment, since the partition wall 24 is not weakened by changing the shape, the method of attaching the partition wall 24 to the cowl body 18 is changed. Is possible.

  In the first embodiment, the partition wall 24 is attached to the cowl body 18 and the attached state to the cowl body 18 is released when an impact force is applied. It is good also as a structure attached to the cowl louver 20 and cancel | released the attachment state with respect to the cowl louver 20 at the time of the effect | action of an impact force. This also applies to other embodiments of the present invention described below.

  In the first embodiment, when the impact force is applied to the cowl louver 20, the partition wall 24 is configured to be tilted without any deformation. However, the present invention is not limited thereto, and when the partition wall 24 is tilted, It is good also as a structure which a part of partition wall 24 deform | transforms. This also applies to other embodiments of the present invention described below.

Next, another embodiment of the present invention will be described. In addition, about the structure and operation | movement fundamentally similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided, and the description is abbreviate | omitted.
<Second Embodiment>
FIG. 5 is a front view showing a partial configuration of a vehicle cowl structure according to the second embodiment of the present invention. This embodiment has basically the same configuration as that of the first embodiment, but the configuration of the partition wall 40 is different from that of the partition wall 24 according to the first embodiment. The partition wall 40 partitions the cowl space 22 into the one side cowl space 22A and the other side cowl space 22B, similarly to the partition wall 24 according to the first embodiment. However, the partition wall 40 has a bent portion at the middle in the vertical direction and is bent in a “square shape”. The upper side is substantially parallel to the vertical direction of the vehicle, and the lower side is perpendicular to the vertical direction of the vehicle. It is attached to the cowl body 18 so as to be able to fall off in a state of being inclined obliquely. For this reason, the partition wall 40 is arranged such that the upper end portion and the lower end portion are offset in the vehicle width direction with respect to the vertical direction of the automobile 12.

The upper end portion of the partition wall 40 is in contact with the lower surface of a cowl louver (not shown), and the object 32 collides with the cowl louver from above (see arrow C in FIG. 5), and an impact force of a predetermined value or more acts on the cowl louver. Then, an impact force directed downward is applied to the upper end portion of the partition wall 40, and a rotational force having the lower end portion as a fulcrum is applied to the partition wall 40. In this case, the partition wall 40 is released from the attached state with respect to the cowl body 18 by the impact force (rotational force) and falls down in the direction of arrow D in FIG. Therefore, this embodiment also has basically the same operational effects as the first embodiment.
<Third Embodiment>
FIG. 6 is a front view showing a partial configuration of a vehicle cowl structure according to a third embodiment of the present invention. This embodiment has basically the same configuration as that of the first embodiment, but the configuration of the partition wall 50 is different from that of the partition wall 24 according to the first embodiment. The partition wall 50 partitions the cowl space 22 into the one side cowl space 22A and the other side cowl space 22B, similarly to the partition wall 24 according to the first embodiment. However, the partition wall 50 is provided with two bent portions in the middle portion in the vertical direction, is bent in a crank shape, and is attached to the cowl body 18 so as to be detached. For this reason, the partition wall 50 is arranged such that the upper end portion and the lower end portion are offset in the vehicle width direction with respect to the vertical direction of the automobile 12.

  Further, the upper end portion of the partition wall 50 is in contact with the lower surface of a cowl louver (not shown), and the object 32 collides with the cowl louver from above (see arrow E in FIG. 6), and an impact force of a predetermined value or more acts on the cowl louver. Then, an impact force directed downward is applied to the upper end portion of the partition wall 50, and a rotational force having the lower end portion as a fulcrum is applied to the partition wall 50. In this case, the partition wall 50 is released from the attached state with respect to the cowl body 18 by the impact force (rotational force) and falls down in the direction of arrow F in FIG. Therefore, this embodiment also has basically the same operational effects as the first embodiment.

1 is a perspective view illustrating a partial configuration of an automobile configured by applying a cowl structure of a vehicle according to a first embodiment of the present invention. 1 is an exploded perspective view showing a cowl structure of a vehicle according to a first embodiment of the present invention. 1 is a front view showing a partial configuration of a cowl structure for a vehicle according to a first embodiment of the present invention. It is a front view showing the partial composition of the cowl structure of vehicles concerning a 1st embodiment of the present invention, and showing the state where the partition wall fell. It is a front view which shows the partial structure of the cowl structure of the vehicle which concerns on the 2nd Embodiment of this invention. It is a front view which shows the partial structure of the cowl structure of the vehicle which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

12 Car (vehicle)
14 windshield 18 cowl body 20 cowl louver (upper wall)
22 cowl space 24 partition wall 40 partition wall 50 partition wall

Claims (3)

A cowl body provided along the vehicle width direction on the lower side of the windshield,
An upper wall that is provided on the upper side of the cowl body and forms a cowl space with the cowl lower of the cowl body;
The cowl body is attached to the cowl body or the upper wall by a breaking pin or bonded, partitions the cowl space into one side in the vehicle width direction and the other side in the vehicle width direction, and an upper end and a lower end with respect to the vertical direction of the vehicle When the impact force greater than or equal to a predetermined value is applied to the upper wall, the mounting state is released when the breaking pin breaks or the adhesive part peels off, and the lower end is supported as a whole. A partition wall that rotates as shown in FIG .
A cowl structure of a vehicle having   The vehicle cowl structure according to claim 1, wherein the partition wall is attached obliquely with respect to a vertical direction of the vehicle. 3. The vehicle according to claim 1, wherein the partition wall is disposed such that an entire upper end portion and an entire lower end portion are offset in a vehicle width direction with respect to a vertical direction of the vehicle. Cowl structure.

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