JP4962171B2 - Body panel structure - Google Patents

Description

  The present invention relates to a vehicle body panel structure in which a plurality of slits penetrating in a plate thickness direction such as a cowl louver are arranged in parallel.

A technique is known in which a slit for introducing outside air is formed in a cowl cover that covers the air box from above (see, for example, Patent Document 1).
JP 2003-1446047 A

  However, in the conventional techniques as described above, there is a concern that foreign matters such as dead leaves may enter from the slit. In the case where a transverse rib that crosses a plurality of slits is provided to prevent the intrusion of foreign matter, there is a concern that the impact resistance may be lowered, which causes the transverse rib to be damaged at low temperatures.

  In view of the above fact, an object of the present invention is to obtain a vehicle body panel structure that can relieve stress concentration on a specific portion of a lateral rib.

The vehicle body panel structure according to the invention of claim 1 is elongated in a crossing direction between a slit forming portion in which a plurality of slits penetrating in the plate thickness direction are arranged in parallel and a parallel direction of the plurality of slits, It is arranged so as to cross at least a plurality of the slits including the slits located at the end portions in the parallel direction, and at least a part of the part located between the slits and the part exposed from the slits to other parts A portion including a lateral rib having a deformation promoting portion that is easily deformed, and a portion exposed from the slit located at the end in the parallel direction in the lateral rib, as the deformation promoting portion or a part of the deformation promoting portion And a curved portion having a lower bending rigidity than other portions of the lateral rib .

  In the vehicle body panel structure according to the first aspect, since the horizontal rib is formed so as to cross the slit, it is possible to prevent foreign matter from entering the vehicle body via the slit. A deformation promoting portion is formed on at least a part of the portion located between the slits in the lateral rib or exposed from the slit (partitioned across the slit), so that an external force acts on the vehicle body panel. In this case, the lateral rib is deformed in the deformation promoting portion (stress (strain energy) is dispersed throughout the lateral rib), and the stress to other portions can be relaxed.

Therefore, in the vehicle body panel structure, the end of the lateral rib where stress is easily concentrated by an external force, that is, the end corresponding to the end of the slit forming portion (the edge of the slit located at the end in the parallel direction) in the lateral rib. The acting stress is suppressed (relaxed).
Further, in this vehicle body panel structure, the lateral rib that has received the external force is greatly deformed at the curved portion, so that the stress acting on the end portion, that is, the specific portion is more effectively relieved.

  Thus, in the vehicle body panel structure according to the first aspect, the stress concentration on the specific portion of the lateral rib can be alleviated. In addition, the part located between the slits in the horizontal rib may be partially or entirely configured in the plate thickness direction by the part between the slits in the slit forming part (the uncut part).

The vehicle body panel structure according to a second aspect of the present invention is the vehicle body panel structure according to the first aspect, wherein the bending portion is configured as a part of the deformation promoting portion, and the deformation promoting portion other than the bending portion is It forms in each of the part located between these slits in the said horizontal rib, or each of the part exposed from these slits in the said horizontal rib.

  In the vehicle body panel structure according to claim 2, since the deformation promoting portion is provided according to the number of slits traversed by the lateral rib (for example, by the number of slits), stress ( (Strain energy) is dispersed, and stress concentration on a specific portion of the lateral rib is effectively relieved.

The vehicle body panel structure according to a third aspect of the present invention is the vehicle body panel structure according to the first or second aspect, wherein the bending portion is configured as a part of the deformation promoting portion, and the deformation other than the bending portion is performed. A plurality of promoting portions are provided and arranged at the same pitch as the plurality of slits crossed by the transverse rib.

  In the vehicle body panel structure according to the third aspect, the plurality of slits in the portion where the lateral ribs cross in the slit forming portion are arranged in parallel at a substantially equal pitch. Since a plurality of deformation promoting portions corresponding to the number of slits traversed by the lateral ribs are provided at the same pitch as the slits, stress (strain energy) is approximately equal in each longitudinal portion of the lateral ribs subjected to external force. The stress concentration on the specific part of the lateral rib is effectively relieved.

The vehicle body panel structure according to a fourth aspect of the present invention is the vehicle body panel structure according to any one of the first to third aspects, wherein the bending portion is configured as a part of the deformation promoting portion, The deformation promoting part other than the part is formed as a notch part in which a part in the plate thickness direction of the slit forming part in the transverse rib is notched.

  In the vehicle body panel structure according to claim 4, since the notch part in which a part of the thickness direction of the lateral rib is notched is the deformation promoting part, the strain energy is effectively dispersed along with the deformation of the lateral rib by an external force, The stress concentration on the specific part of the lateral rib is effectively relieved. Further, the outer shape of the lateral rib is not increased.

  The vehicle body panel structure according to a fifth aspect of the present invention is the vehicle body panel structure according to any one of the first to fourth aspects, wherein the lateral rib is within a thickness range of the slit forming portion, or It is arranged so as to cross at least two slits adjacent to each other in the parallel direction in a state protruding from the slit forming portion to one side in the plate thickness direction.

  In the vehicle body panel structure according to the fifth aspect, the lateral rib can be formed without protruding on the other side in the plate thickness direction of the vehicle body panel, and the design can be ensured.

On the other hand, a vehicle body panel structure different from the vehicle body panel according to the above claims can be considered. The vehicle body panel structure has a slit forming portion in which a plurality of slits penetrating in the plate thickness direction are arranged in parallel, and is elongated in a direction intersecting the parallel direction of the plurality of slits. A portion including at least a plurality of the slits including the slit located at the end portion in the parallel direction and including a portion exposed from the slit located at the end portion in the parallel direction is more than the other portion. A transverse rib having a curved portion with low bending rigidity is integrally formed.

The vehicle body panel structure of this, since the transverse ribs are formed across the slit, it is prevented that foreign matter through the slit enters the inside of the vehicle body. Since the portion including the end exposed from the slit located at the end in the parallel direction in the lateral rib is a curved portion, the curved portion is greatly deformed (strain energy) when an external force is applied to the vehicle body panel. ). Therefore, in the vehicle body panel structure, the end of the lateral rib where stress is easily concentrated by an external force, that is, the end corresponding to the end of the slit forming portion (the edge of the slit located at the end in the parallel direction) in the lateral rib. The acting stress is suppressed (relaxed).

The car body panel structure of this, it is possible to alleviate the stress concentration on a specific portion of the transverse ribs.

  As described above, the vehicle body panel structure according to the present invention has an excellent effect that stress concentration on a specific portion of the lateral rib can be relaxed.

In the following description, the first to fifth embodiments are read as the first to fifth reference examples, and the sixth and seventh embodiments are read as the first and second embodiments.
A cowl louver 10 to which a vehicle body panel structure according to a first embodiment of the present invention is applied will be described with reference to FIGS. 1 to 5. In the figure, the arrow FR indicates the front direction of the vehicle body, the arrow UP indicates the upward direction of the vehicle body, the arrow IN indicates the vehicle width direction inside, and the arrow OUT indicates the vehicle width direction outside.

  FIG. 5 shows a side cross-sectional view of a cowl portion 12 of an automobile A to which the cowl louver 10 is applied, and FIG. 4 shows a part of the cowl louver 10 constituting the cowl portion 12 in a plan view. Has been. As shown in FIG. 5, the cowl portion 12 is disposed at an upper rear end portion of the engine room E of the automobile A, and a lower end portion 14 </ b> A in the vertical direction of the vehicle body is mainly joined to an upper end portion of a dash panel (not shown). A cowl box 18 that opens upward in the vehicle body vertical direction is formed by a cowl inner 14 and a cowl front 16 in which a rear end 16A in the vehicle body front-rear direction is joined to the lower end of the cowl inner 14.

  A cowl outer 20 is joined to the upper end 14B of the cowl inner 14 in the vertical direction of the vehicle body, and a portion near the front lower end 22A of the windshield glass 22 is fixed to the cowl outer 20 by bonding or the like. A rear end portion 10A of the cowl louver 10 that covers the cowl box 18 from above is fixed to the front lower end portion 22A of the windshield glass 22. The front end portion 10B of the cowl louver 10 in the longitudinal direction of the vehicle body supports a rear end portion 26A of an engine hood 26 that covers the engine room E from above so as to be openable and closable via a seal rubber 24.

  As described above, the cowl box 18 covered from above by the cowl louver 10 functions as an air box for taking in outside air to be introduced into the vehicle interior via an air conditioner or the like, and the water such as rainwater that has entered in the vehicle width direction. A function including a drainage function of guiding and discharging to a drainage section (not shown) provided at the end is performed.

  For this reason, as shown in FIG. 4, the cowl louver 10 is provided with a slit 28 that communicates the inside and outside of the cowl box 18. More specifically, as shown in FIG. 2 and FIG. 3 in which the formation region of the slit 28 is partially enlarged, the slit 28 is elongated along the longitudinal direction of the vehicle body, and the cowl louver 10 is moved in the plate thickness direction. A plurality are provided in parallel through the vehicle width direction.

  In the following description, the cowl louver 10 has a plurality of slits 28 formed in a substantially rectangular region that is long in the vehicle width direction as a slit forming portion 10C, and both side portions in the vehicle width direction with respect to the slit forming portion 10C as general portions 10D. A portion between the slits 28 in the slit forming portion 10C is referred to as an inter-slit portion 10E. Further, when the slits 28 located at both ends in the longitudinal direction of the slit forming portion 10C are distinguished from other slits 28, they are referred to as end slits 28A.

  The cowl louver 10 is provided with a lateral rib 30 that divides (divides) the slit 28 in the longitudinal direction of the vehicle body in a plan view on the cowl box 18 side of the slit forming portion 10C, that is, the lower side in the vehicle body vertical direction. Specifically, as shown in FIG. 2, FIG. 3, FIG. 1 (A), and FIG. 1 (B), the lateral rib 30 is elongated in the vehicle width direction, and each slit 28 of the slit forming portion 10C is formed. It spans between the general portions 10D on both sides of the slit forming portion 10C so as to straddle.

  Therefore, the lateral rib 30 has both longitudinal end portions 30A projecting downward from the lower surface of the general portion 10D, and from the lower surface of the slit closing portion 30B exposed from the slit 28 and the lower surface of the inter-slit portion 10E between the both end portions 30A. The structure is such that the inter-slit protrusions 30C protruding downward are alternately arranged in the longitudinal direction. In this embodiment, the projecting height of the lateral rib 30 from the slit-to-slit portion 10E is approximately equal to or slightly larger than the plate thickness of the slit forming portion 10C (general portion 10D).

  In this embodiment, as shown in FIG. 1A, the upper surface of each slit closing portion 30B in each lateral rib 30 is slightly smaller than the lower surfaces of the general portion 10D and the slit forming portion 10C (inter-slit portion 10E). It is configured to be located on the upper side and below the upper surfaces of the general portion 10D and the slit forming portion 10C. Further, as shown in FIGS. 1A and 1B, the general portion 10D and the boundary portion 30D between the slit-to-slit portion 10E and the slit closing portion 30B are formed in a round shape so as to be smoothly continuous. Yes. In this embodiment, as shown in FIGS. 2 and 3, a plurality (three) of lateral ribs 30 are arranged in parallel in the longitudinal direction of the vehicle body.

  Further, in the cowl louver 10, each lateral rib 30 is provided with a notch 32 as a deformation promoting portion (stress concentration portion, fragile portion). In this embodiment, the notch 32 is formed in a shape having a substantially U-shaped (V-shaped) edge that opens downward in the vehicle body vertical direction in each of the inter-slit protrusions 30C. The rib 30 is formed over the entire width along the longitudinal direction of the vehicle body. That is, in the cowl louver 10, it can be understood that the same number of notches 32 as the inter-slit protrusions 30 </ b> C (inter-slit portions 10 </ b> E) between the slits 28 are formed at substantially the same pitch as the slits 28.

  The plurality of cutout portions 32 reduce the overall bending rigidity (ensure flexibility in the bending direction) of the lateral rib 30 (slit forming portion 10 </ b> C) as compared with a configuration without the cutout portions 32. In addition, each notch part 32 in this embodiment may be grasped | ascertained as a deformation | transformation promotion part in this invention, respectively, and the whole several notch part 32 may be grasped | ascertained as one deformation | transformation promotion part.

  The cowl louver 10 described above is integrally formed as a synthetic resin molded product. That is, the cowl louver 10 is integrally formed by resin molding with each part including a general part 10D, a slit forming part 10C (inter-slit part 10E), and a lateral rib 30 having a notch 32.

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

  In the cowl louver 10 having the above-described configuration, air is introduced into the cowl box 18 from the slit 28, and this air is introduced into the vehicle interior as outside air or air-conditioning air as needed via an air conditioner or the like.

  Further, in the cowl louver 10, foreign matters such as dead leaves are prevented from entering the cowl box 18 through the slit 28. Thereby, in the cowl part 12 to which the cowl louver 10 is applied, it is possible to prevent foreign matter such as dead leaves from accumulating on the bottom of the cowl box 18 and hindering drainage from the cowl box 18.

  Here, in the cowl louver 10, since the notch 32 is provided in the lateral rib 30, when an external force is applied, a portion that substantially matches the vehicle width direction end of the slit forming portion 10 </ b> C in the lateral rib 30, that is, the longitudinal Concentration of stress is suppressed at a boundary portion 30E (see FIG. 1A) between the direction end portion 30A and the slit closing portion 30B (a portion exposed from the end slit 28A). Thereby, in the cowl louver 10, for example, the occurrence of cracks in the vicinity of the boundary portion 30E of the lateral rib 30 due to an external force at a low temperature is suppressed or prevented.

  To supplement this point, the resin material constituting the cowl louver 10 is less flexible at low temperatures and easily cracks in the stress concentration portion. Therefore, in the comparative example in which the lateral ribs 30 having no notches 32 are provided, For example, if an impact load is applied in order to remove ice adhering (frozen) to the slit forming portion 10C, there is a concern that stress concentrates on the boundary portion 30E to cause cracking.

  On the other hand, in the cowl louver 10, since the notch 32 is set in the lateral rib 30, when the external force acts on the slit forming part 10C, the slit forming part 10C as a whole starts from the notch 32 which is a deformation promoting part. Is deformed (strain energy can be borne by deformation of the entire slit forming portion 10C starting from the notch 32). From another viewpoint, in the cowl louver 10, the flexibility of the lateral rib 30 is ensured by the notch 32. That is, in the present cowl louver 10, when an external force is applied, the stress acting on the boundary portion 30E between the longitudinal end portions 30A and the slit closing portion 30B of the lateral rib 30 is relieved. When an impact load is input to the portion 10C, the entire slit forming portion 10C is deformed starting from the notch 32, so that the impact load acting on the boundary portion 30E of the lateral rib 30 is absorbed, and the boundary portion 30E is cracked. Is effectively suppressed or prevented.

  As described above, in the cowl louver 10 according to the first embodiment, the stress concentration on the boundary portion 30E between the longitudinal end portion 30A (general portion 10D) and the slit closing portion 30B (slit forming portion 10C) of the lateral rib 30. The cracks of the lateral ribs 30 are effectively suppressed or prevented. That is, in the cowl louver 10, the impact resistance at a low temperature is remarkably improved as compared with the configuration having no notch 32.

  In particular, in the cowl louver 10, the notch portions 32 are formed in each of the inter-slit protrusions 30 </ b> C (portions covered by the inter-slit portions 10 </ b> E) of the lateral rib 30. Since they are arranged at substantially equal pitches, when external force is applied, the strain energy is dispersed in each notch 32 and the stress acting on the boundary 30E can be further relaxed.

  Further, in the cowl louver 10, the notch 32 that opens at the lower end of the lateral rib 30 is formed and the deformation promoting portion is provided. Therefore, the stress acting on the boundary portion 30 </ b> E is effective with a simple and easy resin molding structure. Can be relaxed. Further, in the cowl louver 10 provided with the notches 32, the deformation promoting portions can be formed within the range of the dimensions of the horizontal ribs 30, and the horizontal ribs 30 are not enlarged in order to facilitate deformation. For this reason, the space in the cowl box 18 is effectively used, and the material yield of the cowl louver 10 is improved.

  Further, since the lateral rib 30 is configured to project mainly on the lower surface side (the cowl box 18 side) of the slit forming portion 10C in the vertical direction of the vehicle body in the cowl louver 10, in other words, it projects on the upper surface side of the slit forming portion 10C. Since the structure does not occur, it is possible to provide the lateral ribs 30 that are difficult to crack at low temperatures while ensuring the design properties, and to suppress the entry of foreign matter such as dead leaves into the cowl box 18.

  Next, another embodiment of the present invention will be described. Note that parts or portions that are basically the same as those in the first embodiment or the above-described configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and the description thereof is omitted. May be omitted.

(Second Embodiment)
FIG. 6 shows a cowl louver 40 to which a vehicle body panel structure according to the second embodiment of the present invention is applied, in a cross-sectional view corresponding to FIG. In the following description and FIG. 6, a substantially rectangular region elongated in the vehicle width direction in which a plurality of slits 28 in the cowl louver 40 are formed is defined as a slit forming portion 40C, and both side portions in the vehicle width direction with respect to the slit forming portion 40C. A portion between the slits 28 in the general portion 40D and the slit forming portion 40C is defined as an inter-slit portion 40E.

  As shown in FIG. 6, the cowl louver 40 includes a notch portion 42 formed in each slit closing portion 30 </ b> B in place of the notch portion 32 formed in the inter-slit protrusion 30 </ b> C of the lateral rib 30. This is different from the cowl louver 10 according to the first embodiment.

  The notch portion 42 is formed as a V-shaped notch portion having a substantially V-shaped edge opening downward in the vehicle body vertical direction in each of the slit closing portions 30B, and the vehicle body longitudinal direction in the lateral rib 30 Is formed over the entire width along the line. That is, in the cowl louver 40, it can be understood that the slit closing portions 30B, that is, the same number of the cutout portions 32 as the slits 28 are formed at substantially the same pitch as the slits 28.

  The plurality of cutout portions 42 reduce the overall bending rigidity of the lateral rib 30 (slit forming portion 40 </ b> C) compared to a configuration without the cutout portions 42 (ensures flexibility in the bending direction). In addition, each notch part 42 in this embodiment may be grasped | ascertained as a deformation | transformation promotion part in this invention, respectively, and the whole several notch part 42 may be grasped | ascertained as one deformation | transformation promotion part. The other configuration of the cowl louver 40 is the same as the corresponding configuration of the cowl louver 10 including a portion not shown.

  Therefore, also by the cowl louver 40 according to the second embodiment, the same effect can be obtained by the same action as 10 according to the first embodiment. That is, in the cowl louver 40 according to the second embodiment, stress concentration on the boundary portion 30E between the longitudinal end portion 30A (general portion 40D) and the slit closing portion 30B (slit forming portion 40C) of the lateral rib 30 is alleviated. The cracks of the lateral ribs 30 can be effectively suppressed or prevented.

  In the second embodiment, the example in which the cutout portion 42 is formed in the horizontal rib 30 instead of the cutout portion 32 is shown. However, the cutout portions 32 and 42 may be formed in the horizontal rib 30, respectively. good.

(Third embodiment)
FIG. 7 shows a cowl louver 50 to which a vehicle body panel structure according to a third embodiment of the present invention is applied, in a cross-sectional view corresponding to FIG. In the following description and FIG. 7, a substantially rectangular region elongated in the vehicle width direction in which a plurality of slits 28 in the cowl louver 50 are formed is defined as a slit forming portion 50C, and both side portions in the vehicle width direction with respect to the slit forming portion 50C. A portion between the slits 28 in the general portion 50D and the slit forming portion 50C is defined as an inter-slit portion 50E.

  As shown in FIG. 7, the cowl louver 50 is provided with a horizontal rib 52 in place of the horizontal rib 30 in that the protruding height from the lower surface of the slit portion 50E in the slit forming portion 50C is smaller than that of the horizontal rib 30. This is different from the cowl louver 10 according to the first embodiment. For this reason, the lateral rib 52 has a lower rigidity (weakened) than the lateral rib 30 due to its dimensional shape.

  Further, in the cowl louver 50, the notch 32 is formed in each of the inter-slit protrusions 52A protruding from the inter-slit parts 50E of the slit forming part 50C in the lateral rib 52. In this embodiment, since the height of the lateral rib 52 along the vertical direction of the vehicle body is low, the notch 32 is formed to reach 50E of the slit forming part 50C.

  Although description with reference numerals is omitted, the boundary portion between the slit closing portion 52B exposed from the slit 28 in the lateral rib 52 and the slit-to-slit portion 50E has the same round shape as the boundary portion 30D of the cowl louver 10. ing. The other configuration of the cowl louver 50 is the same as the corresponding configuration of the cowl louver 10 including a portion not shown.

  Therefore, also by the cowl louver 50 according to the third embodiment, the same effect can be obtained by the same action as 10 according to the first embodiment. That is, in the cowl louver 50 according to the third embodiment, stress concentration on the boundary portion 52D between the slit closing portion 52B (slit forming portion 50C) and the longitudinal end portion 52C (general portion 50D) in the lateral rib 52 is alleviated. The cracks of the lateral ribs 52 can be effectively suppressed or prevented.

  In the third embodiment, the example in which the notch 32 is formed in each of the protrusions 52A between the slits of the horizontal rib 52 is shown. However, the slit closing portion that closes a part of the slit 28 in the horizontal rib 52 is shown. Notches 42 may be formed in each of 52B, and notches 32 and 42 may be formed in each of the inter-slit protrusion 52A and the slit closing portion 52B of the lateral rib 52, respectively.

(Fourth embodiment)
FIG. 8 shows a cowl louver 60 to which a vehicle body panel structure according to a fourth embodiment of the present invention is applied, in a cross-sectional view corresponding to FIG. In the following description and FIG. 8, the cowl louver 60 has a plurality of slits 28 formed in a substantially rectangular region extending in the vehicle width direction as a slit forming portion 60C, and both side portions in the vehicle width direction with respect to the slit forming portion 60C. A portion between the slits 28 in the general portion 60D and the slit forming portion 60C is defined as an inter-slit portion 60E.

  As shown in FIG. 8, instead of the lateral ribs 30 and 52, the lower surface of the cowl louver 60 is substantially flush with the lower surfaces of the slit forming portion 60C (inter-slit portion 60E) and the general portion 60D (slit formation). It differs from the cowl louvers 10 and 50 according to the first embodiment in that it includes lateral ribs 62 (not provided to protrude from the portion 60C and provided within the thickness range of the inter-slit portion 60E).

  That is, each of the lateral ribs 62 is configured such that the slit closing portions 62A that close a part of the corresponding slits 28 are connected via the inter-slit portions 60E that partition the slits 28 in the slit forming portion 60C. Can be grasped. In other words, it can be understood that the lateral rib 62 is configured to include the slit-to-slit portion 60E (the lower portion in the vehicle body vertical direction).

  The lateral rib 62 has a lower rigidity (weakened) than the lateral rib 30 (lateral rib 52) due to its dimensional shape. Further, in the cowl louver 60, a notch portion 42 is formed in each of the slit closing portions 62A for closing a part of the slit 28 in the lateral rib 62. Although the description with reference numerals is omitted, the boundary portion between the slit closing portion 62A of the lateral rib 62 and the slit-to-slit portion 60E has a rounded shape similar to that of the boundary portion 30D of the cowl louver 10. The other structure of the cowl louver 60 is the same as the corresponding structure of the cowl louver 10 including a portion not shown.

  Therefore, also by the cowl louver 60 according to the fourth embodiment, the same effect can be obtained by the same action as 10 according to the first embodiment. That is, in the cowl louver 60 according to the fourth embodiment, the stress applied to the boundary 62B between the slit closing part 62A (slit forming part 60C) for closing the end slit 28A in the lateral rib 62 and the general part 60D of the cowl louver 60. Concentration can be relaxed, and cracking of the lateral rib 62 is effectively suppressed or prevented.

  In the fourth embodiment, the example in which the notch 42 is formed in each of the slit closing portions 62A of the horizontal rib 62 is shown. However, the slit ribs 62A adjacent in the vehicle width direction are connected to each other to connect the horizontal rib. The cutout portion 32 may be formed in the slit-to-slit portion 60 </ b> E that forms a part of 62. In this case, the notch 32 may be formed in a part of the front-rear direction of the vehicle body in the inter-slit portion 60E, or may be formed over the entire length.

(Fifth embodiment)
9 shows a cowl louver 65 to which a vehicle body panel structure according to a fifth embodiment of the present invention is applied, in a cross-sectional view corresponding to FIG. In the following description and FIG. 9, a substantially rectangular region elongated in the vehicle width direction in which a plurality of slits 28 in the cowl louver 65 are formed is a slit forming portion 65 </ b> C, and both side portions in the vehicle width direction with respect to the slit forming portion 65 </ b> C are shown. A portion between the slits 28 in the general portion 65D and the slit forming portion 65C is defined as an inter-slit portion 65E.

  As shown in FIG. 9, instead of the lateral ribs 30 and 62, the lower surface of the cowl louver 65 is located above the lower surfaces of the slit forming portion 65C (inter-slit portion 65E) and the general portion 65D in the vertical direction of the vehicle body. It differs from the cowl louvers 10 and 50 according to the first and fourth embodiments in that it includes a lateral rib 66 (provided within the thickness range of the inter-slit portion 65E).

  That is, each of the horizontal ribs 66 is configured such that the slit closing portions 66A for closing a part of the corresponding slits 28 are connected via the inter-slit portions 65E that partition the slits 28 in the slit forming portion 65C. Can be grasped. In other words, it can be understood that the lateral rib 66 is configured to include an inter-slit portion 65E (an intermediate portion in the vehicle body vertical direction).

  The lateral rib 66 has a lower rigidity (weakened) than the lateral rib 30 (lateral rib 52) due to its dimensional shape. Further, in the cowl louver 65, a notch portion 42 is formed in each of the slit closing portions 66A for closing a part of the slit 28 in the lateral rib 66, and the notch portion 32 is formed in an inter-slit portion 65E constituting the lateral rib 66. Is formed. Although description with reference numerals is omitted, the boundary portion between the slit closing portion 66A of the lateral rib 66 and the inter-slit portion 65E has a rounded shape similar to the boundary portion 30D of the cowl louver 10. Other configurations of the cowl louver 65 are the same as the corresponding configurations of the cowl louver 10 including a portion not shown.

  Therefore, also by the cowl louver 65 according to the fifth embodiment, the same effect can be obtained by the same action as 10 according to the first embodiment. That is, in the cowl louver 65 according to the fifth embodiment, the stress applied to the boundary portion 66B between the slit closing portion 66A (slit forming portion 65C) for closing the end slit 28A in the lateral rib 66 and the general portion 65D of the cowl louver 65. Concentration can be relaxed, and cracking of the lateral rib 66 is effectively suppressed or prevented.

  In the fifth embodiment, the example in which the notch portion 42 is formed in each slit closing portion 66A of the lateral rib 66 and the notch portion 32 is formed in each slit forming portion 65C is shown. Only one of the part 32 and the notch part 42 may be provided.

(Sixth embodiment)
FIG. 10 shows a cross-sectional view corresponding to FIG. 1 (A) of a cowl louver 70 to which a vehicle body panel structure according to a sixth embodiment of the present invention is applied. In the following description and FIG. 10, the cowl louver 70 has a plurality of slits 28 formed in a substantially rectangular region elongated in the vehicle width direction as a slit forming portion 70C, and both side portions in the vehicle width direction with respect to the slit forming portion 70C. A portion between the slits 28 in the general portion 70D and the slit forming portion 70C is defined as an inter-slit portion 70E.

  As shown in FIG. 10, the cowl louver 70 has a curved slit closing portion 72 as a deformation promoting portion or a bending portion in the present invention, instead of the slit closing portion 30B for closing a part of the end slit 28A in the longitudinal direction of the vehicle body. The cowl louver 10 according to the first embodiment is different from the cowl louver 10 according to the first embodiment in that the lateral rib 30 is formed.

  The curved slit closing portion 72 has a substantially U shape that opens upward in the vehicle body vertical direction, and has one opening end connected to the longitudinal end portion 30A so as to straddle the end slit 28A. The other opening end is connected to the inter-slit protrusion 30C adjacent to the end slit 28A. Therefore, in the cowl louver 70, the boundary portion 30E between the longitudinal end portion 30A and the curved slit closing portion 72 is a portion that substantially coincides with the end portion of the lateral rib 30 in the vehicle width direction of the slit forming portion 70C.

  In the cowl louver 70 described above, the curved slit closing portion 72 is formed, so that bending of the lateral rib 30 (bending in the direction of arrow B shown in FIG. 10) is promoted when an external force is applied to the slit forming portion 70C. It is like that. In the cowl louver 70, the notched portions 32 are not formed in the inter-slit projecting portions 30C of the lateral rib 30, and the notched portions 42 are not formed in the slit closing portions 30B.

  Moreover, although illustration is abbreviate | omitted, a pair of curved slit closing part 72 is formed corresponding to the both ends (a pair of edge part slit 28A) of 70 C of slit formation parts. The other configuration of the cowl louver 70 is the same as the corresponding configuration of the cowl louver 10 including a portion not shown.

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

  In the cowl louver 70 having the above-described configuration, air is introduced into the cowl box 18 from the slit 28, and this air is introduced into the vehicle interior as outside air or air-conditioning air as needed via an air conditioner or the like. Further, the cowl louver 70 prevents foreign matter such as dead leaves from entering the cowl box 18 through the slit 28. As a result, in the cowl portion 12 to which the cowl louver 70 is applied, it is possible to prevent foreign matter such as dead leaves from accumulating on the bottom of the cowl box 18 and hindering drainage from the cowl box 18.

  Here, in the cowl louver 70, since the curved slit closing portion 72 is provided on the lateral rib 30, when external force is applied, a portion that substantially coincides with the vehicle width direction end portion of the slit forming portion 70C in the lateral rib 30, That is, stress is suppressed from concentrating on the boundary portion 30E between the end portion 30A in the longitudinal direction and the curved slit closing portion 72. Thereby, for example, the occurrence of cracks in the vicinity of the boundary portion 30E of the lateral rib 30 due to an external force at a low temperature is suppressed or prevented.

  Complementing this point, the resin material constituting the cowl louver 70 is less flexible at low temperatures and easily cracks in the stress concentration portion. Therefore, in the comparative example in which the lateral rib 30 having no curved slit closing portion 72 is provided. For example, if an impact load is applied in order to remove ice attached to (freeze) the slit forming portion 70C, there is a concern that stress concentrates on the boundary portion 30E to cause cracking.

  On the other hand, in the cowl louver 70, since the curved slit closing portion 72 is set on the lateral rib 30, when an external force acts on the slit forming portion 70C, the deformation of the curved slit closing portion 72, which is a deformation promoting portion, Strain energy can be stored. That is, in this cowl louver 70, when an external force is applied, the stress acting on the boundary 30E between the end 30A in the longitudinal direction of the lateral rib 30 and the curved slit closing part 72 is relieved. When an impact load is input to the forming portion 70C, the impact load acting on the boundary portion 30E of the lateral rib 30 is absorbed by being deformed by the curved slit closing portion 72, and the boundary portion 30E of the lateral rib 30 is cracked. Occurrence is effectively suppressed or prevented.

  As described above, in the cowl louver 70 according to the sixth embodiment, the stress concentration on the boundary portion 30E between the longitudinal end portion 30A (general portion 70D) and the slit closing portion 30B (slit forming portion 70C) of the lateral rib 30 is achieved. The cracks of the lateral ribs 30 are effectively suppressed or prevented. That is, in the cowl louver 70, the impact resistance at a low temperature is remarkably improved as compared with the configuration in which the curved slit closing portion 72 is not provided.

(Seventh embodiment)
FIG. 11 shows a cowl louver 80 to which a vehicle body panel structure according to a seventh embodiment of the present invention is applied, in a cross-sectional view corresponding to FIG. In the following description and FIG. 11, the cowl louver 80 has a plurality of slits 28 formed in a substantially rectangular region that is long in the vehicle width direction as slit forming portions 80C, and both side portions in the vehicle width direction with respect to the slit forming portions 80C. A portion between the slits 28 in the general portion 80D and the slit forming portion 80C is defined as an inter-slit portion 80E.

  As shown in FIG. 11, the cowl louver 80 is different from the cowl louver 70 according to the sixth embodiment in that a notch 42 is formed in each slit closing part 30 </ b> B in the lateral rib 30. The other structure of the cowl louver 80 is the same as the corresponding structure of the cowl louver 70 (the cowl louver 10) including a portion not shown.

  In the cowl louver 80, basically the same effect can be obtained by the same action as the cowl louver 10 and the cowl louver 70. That is, in the cowl louver 80, the stress acting on the boundary portion 30E is further relaxed by the stress relaxation effect on the boundary portion 30E by the notch portion 42 and the stress relaxation effect on the boundary portion 30E by the curved slit closing portion 72 ( Stress concentration is further suppressed), and the impact resistance of the lateral rib 30 at a low temperature is further improved.

  In the seventh embodiment, an example in which each cutout portion 42 and the curved slit closing portion 72 are formed on the lateral rib 30 is shown. However, the present invention is not limited to this, and for example, the curved slit closing portion. In the structure having 72, instead of or in addition to the notch portion 42, the notch portion 32 may be formed in each inter-slit protrusion 30C, and for example, a slit forming portion such as the cowl louvers 50 and 60. The protrusion height downward from 70C may be made small or zero.

  Moreover, in the said 1st-5th and 7th embodiment, the some notch parts 32 and 42 are each slit 28 or the slit part 10E, 40E, 50E, 60E, in each horizontal rib 30, 52, 62, 66, respectively. Although the example provided for every 65E was shown, for example, a single notch 32 or 42 may be formed in each lateral rib 30, 52, 62, 66, and the slit 28 or the inter-slit portion 10E may be formed. , 40E, 50E, 60E, 65E may be formed at every predetermined number (for example, every other one).

  Further, in each of the above-described embodiments, the example in which the three lateral ribs 30, 52, and 62 are provided in parallel in the vehicle body front-rear direction has been shown, but the present invention is not limited to this. One or four or more horizontal ribs 30 or the like may be provided.

  Furthermore, in the above-described embodiment (FIGS. 2, 4 and the like), an example in which the front and rear end positions of the slits 28 in the longitudinal direction of the vehicle body are matched is shown, but the present invention is not limited to this. As shown in FIG. 12, a plurality of slits 28 (a part of the slits 28 including the end slit 28A in FIG. 12) are arranged in the longitudinal direction of the vehicle body in accordance with the slit forming portion 10C (cowl louver 10) formed in an arc shape in plan view. You may make it arrange | position, offsetting. In this case, for example, the lateral ribs 30, 52, 62 may be configured to be curved in plan view according to the slit forming portion 10C or the like.

  Further, in the above-described embodiment (FIGS. 2, 4 and the like) and modifications, an example in which a plurality of slits 28 are arranged in parallel in the vehicle width direction is shown, but the present invention is not limited to this, and for example, FIG. As shown, a configuration in which at least a part of the plurality of slits 28 are arranged radially, in other words, the plurality of slits 28 are formed in the general portions 10D, 40D, 50D, 60D, 65D, 70D, and 80D (rear edge portions). It is good also as a structure paralleled in the bending direction. That is, the plurality of slits 28 in the present invention are not limited to a configuration (a configuration in which the slits 28 are arranged in parallel) arranged in a straight line direction such as a vehicle width direction, but a circumferential direction, a predetermined bending direction, or the like. Can be arranged in parallel in the curve direction. More specifically, the slit 28 in the present invention is crossed by a linear or curved lateral rib 30 or the like when viewed from the thickness direction of the cowl louver 10 or the like to be formed (in the above-described embodiments in plan view). It is only necessary to be arranged so that both edges in the short direction are bridged in the direction intersecting the longitudinal direction.

  Furthermore, in the above embodiment, an example in which each slit 28 has the same size and shape has been shown. However, the present invention is not limited to this, and some or all of the plurality of slits 28 arranged in parallel have different dimensions (for example, It is good also as a structure which has the length along the vehicle body front-back direction.

  In the above embodiment, the vehicle body panel structure of the present invention is applied to the cowl louvers 10, 40, 50, 60, 70, 80. However, the present invention is not limited to this example. Needless to say, the present invention can be applied to various types of vehicle body panels formed with slits for air intake such as fender panels.

It is a figure which expands and shows the principal part of the cowl louver which concerns on the 1st Embodiment of this invention, Comprising: (A) is sectional drawing along the 1A-1A line of FIG. 2, (B) is 1B- of FIG. It is sectional drawing along line 1B. It is a top view which partially enlarges and shows the slit formation part in the cowl louver which concerns on the 1st Embodiment of this invention. It is a perspective view which expands and partially shows the slit formation part in the cowl louver which concerns on the 1st Embodiment of this invention. It is a top view which shows typically the slit formation part in the cowl louver which concerns on the 1st Embodiment of this invention. It is side sectional drawing of the cowl part to which the cowl louver which concerns on the 1st Embodiment of this invention was applied. It is sectional drawing corresponding to FIG. 1 (A) which expands and shows the principal part of the cowl louver which concerns on the 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 (A) which expands and shows the principal part of the cowl louver which concerns on the 3rd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 (A) which expands and shows the principal part of the cowl louver which concerns on the 4th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 (A) which expands and shows the principal part of the cowl louver which concerns on the 5th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 (A) which expands and shows the principal part of the cowl louver which concerns on the 6th Embodiment of this invention. It is sectional drawing corresponding to FIG. 10 which expands and shows the principal part of the cowl louver which concerns on the modification of the 7th Embodiment of this invention. It is a top view which shows typically the slit formation part in the cowl louver which concerns on the modification of each embodiment of this invention. It is a top view which shows typically the slit formation part in the cowl louver which concerns on another modification of each embodiment of this invention.

Explanation of symbols

10 Cowl louver (body panel structure)
10C Slit forming part 28 Slit 30 Horizontal rib 32 Notch part (deformation promoting part)
40/50/60/65/70/80 Cowl louver (body panel structure)
40C / 50C / 60C / 65C / 70C / 80C Slit forming part 42 Notch part (deformation promoting part)
52, 62, 66 Horizontal rib 72 Curved slit closing part (deformation promoting part, curved part)

Claims (5)

A slit forming portion in which a plurality of slits penetrating in the plate thickness direction are arranged in parallel;
A portion that is long in a direction intersecting with a parallel direction of the plurality of slits and that is disposed so as to cross the plurality of slits including the slit that is located at least at an end portion in the parallel direction, and located between the slits. And a lateral rib having a deformation promoting portion that is easily deformed with respect to the other part in at least a part of the part exposed from the slit,
A portion including a portion exposed from the slit located at the end in the parallel direction in the lateral rib is configured as the deformation promoting portion or as a part of the deformation promoting portion, and more than other portions in the lateral rib. A curved portion having low bending rigidity;
Body panel structure that is integrally formed. The bending portion is configured as a part of the deformation promoting portion,
The deformation promoting portion other than the curved portion is formed in each of the portions located between the plurality of slits in the transverse rib or in each portion exposed from the plurality of slits in the transverse rib. 1. The vehicle body panel structure according to 1. The bending portion is configured as a part of the deformation promoting portion,
The vehicle body panel structure according to claim 1 or 2, wherein a plurality of the deformation promoting portions other than the curved portion are provided and arranged at an equal pitch with the plurality of slits traversed by the lateral rib. The bending portion is configured as a part of the deformation promoting portion,
The deformation promoting portion other than the curved portion is formed as a notched portion formed by notching a part of the slit forming portion in the plate thickness direction of the lateral rib. Car body panel structure.   The transverse rib crosses at least two slits adjacent to each other in the parallel direction within a range of the thickness of the slit forming portion or in a state of protruding from the slit forming portion to one side in the plate thickness direction. The vehicle body panel structure according to any one of claims 1 to 4, wherein the vehicle body panel structure is disposed.

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