JP6145489B2 - Shield - Google Patents

Description

  The present invention relates to a shielding plate and a vehicle structure including the shielding plate.

  2. Description of the Related Art Conventionally, many automobiles are provided with an engine room in which an engine is accommodated at a front portion of a vehicle body. An air box that takes in outside air is disposed below the windshield at the rear of the engine room.

  Normally, the outside air taken into the air box is ventilated by flowing it into the passenger compartment through a vent hole opened in the cowl top cover. At this time, the hot air and odor from the engine compartment enter the passenger compartment. There is a problem of inflow.

  Therefore, it is desired to block the inflow of hot air and odor from the engine room into the vehicle interior while allowing outside air to flow into the vehicle interior.

  For example, when an insulator is attached to the vehicle body panel in order to block the air flow in the space formed by the vehicle body panel, the fender panel, and the fender protector, the insulator attachment means breaks due to the impact force applied to the fender panel. An insulator mounting structure in which a fracture portion is provided has been proposed (for example, see Patent Document 1).

JP 2007-90999 A

  However, in the insulator mounting structure described in Patent Document 1, a breakage portion is provided in the insulator attachment means, and when the automobile collides, the attachment means breaks at the breakage portion, whereby the insulator is detached from the fender panel, The fender panel is deformed to absorb the impact of the collision.

  On the other hand, in the above structure, the fracture portion is provided at a specific portion of the attachment means. However, if the impact at the time of collision is not sufficiently applied to the specific portion, the fracture portion may not break. In such a case, since the insulator is not detached from the fender panel, there is a problem that the fender panel is hardly deformed and it is difficult to absorb the impact.

  Moreover, in the above structure, since the shape of the insulator is different if the vehicle type is different, there is a problem in that it is difficult to improve the production efficiency because the fracture portion must be arranged in a specific part corresponding to each vehicle type.

  Accordingly, an object of the present invention is to bend regardless of a portion to which an external force is applied, to absorb an impact reliably, and to improve the production efficiency regardless of the shape, and the shielding thereof It is providing the vehicle structure provided with a board.

  In order to achieve the above object, the shielding plate of the present invention includes a flat plate member and a stress concentration portion formed over the entire surface of the flat plate member and bent when an external force is applied.

  In this shielding plate, a stress concentration portion that is bent when an external force is applied is formed over the entire surface of the flat plate member. Therefore, even if an external force is applied to any part, the flat plate member can be bent at the stress concentration portion. Moreover, since the stress concentration portion is provided over the entire surface of the flat plate member, an external force can be applied to the stress concentration portion regardless of the shape of the flat plate member.

  As a result, this shielding plate can absorb an impact reliably and can improve production efficiency.

  In the shielding plate according to the present invention, the flat plate member includes a first flat plate, a second flat plate arranged to face the first flat plate, and a plurality of columns provided between the first flat plate and the second flat plate. Preferably, the stress concentration part is a weak part formed between the pillar parts.

  In this shielding plate, the flat plate member is formed of a first flat plate, a second flat plate, and a column portion, and a fragile portion is formed between the column portions.

  Therefore, the strength of the shielding plate can be maintained in the column portion, and the flat plate member can be reliably bent at the fragile portion between the column portions.

  In the shielding plate of the present invention, it is preferable that the fragile portion is formed on the flat plate member along at least one direction.

  In this shielding plate, the fragile portion is formed along at least one direction. Therefore, the flat plate-like member can be reliably bent along one direction at the site where the external force is applied.

  As a result, the shielding plate can absorb the impact at the time of collision more reliably.

  In the shielding plate of the present invention, it is preferable that a plurality of the weak portions are arranged in parallel on the flat plate member at intervals in a direction orthogonal to the direction in which the weak portions are formed.

  In this shielding plate, the plurality of fragile portions are arranged side by side in the direction orthogonal to the direction in which the fragile portions are formed. Therefore, the flat plate-like member can be bent in a direction orthogonal to the direction in which the fragile portion is formed regardless of the portion to which the external force is applied.

  As a result, the shielding plate can absorb the impact at the time of collision more reliably.

  Further, in the shielding plate of the present invention, the fragile portions are formed in the flat plate member along the three directions, respectively, and the plurality of the fragile portions are arranged in parallel at intervals in the directions orthogonal to the three directions. It is preferable to be provided.

  In this shielding plate, a plurality of fragile portions are arranged in parallel at intervals in directions orthogonal to the three directions. Therefore, the flat plate member can be bent in any direction regardless of the portion to which the external force is applied.

  As a result, this shielding plate can absorb the impact at the time of collision more reliably.

  In the shielding plate of the present invention, the vertical compressive strength in the direction in which the fragile portions are arranged side by side is 0.02 to 0.9 times the vertical compressive strength in the direction in which the fragile portions are formed. Is preferred.

  In this shielding plate, the vertical compressive strength in the direction in which the fragile portions are arranged side by side is 0.02 to 0.9 times the vertical compressive strength in the direction in which the fragile portions are formed. That is, the vertical compressive strength in the direction in which the fragile portions are arranged side by side is set lower than the vertical compressive strength in the direction in which the fragile portions are formed. Therefore, the flat member can be easily bent by applying an external force from the direction in which the fragile portions are arranged side by side.

  As a result, this shielding board can absorb more reliably the impact from the direction where a weak part is arranged in parallel.

  Moreover, in the shielding board of this invention, it is suitable to further provide the reinforcement part formed in part on the said flat member.

  In this shielding plate, a desired part can be reinforced by the reinforcing portion. Therefore, the strength of a desired part can be improved.

  In the shielding plate of the present invention, it is preferable that the shielding plate further includes a bent portion that is partially formed on the flat plate-like member, bent when an external force is applied, and different from the stress concentration portion.

  With this shielding plate, a desired portion of the flat plate member can be bent.

  In the shielding plate of the present invention, the bent portion is formed along one direction, and a liquid and / or a solid flow flows when mounted on the structural member and / or in the space of the structural member. When it occurs, it is preferably bendable along said one direction.

  In this shielding plate, when the structural member is formed in a complicated shape, the flat plate member can be bent and reliably disposed on the structural member.

  Alternatively, the liquid and / or solid in the space of the structural member can be passed by bending the flat plate member.

  In the shielding plate of the present invention, the bent portion is formed by hot pressing in the thickness direction of the flat plate member, and one surface and the other surface of the bent portion are inclined with respect to the one direction. It is preferable that a streak is formed, and the streak on one surface of the bent portion and the streak on the other surface of the bent portion intersect when projected in the thickness direction.

  In this shielding plate, the mobility of the bent portion can be enhanced by the streak, and the streaks on one side and the other side of the bent portion intersect when projected in the thickness direction, so the durability of the bent portion Can be increased.

  Moreover, in the shielding board of this invention, it is suitable for the elastic member to be provided in at least one part of the peripheral part of the said flat member.

  In this shielding plate, the elastic member is disposed on the peripheral portion of the flat plate member. Therefore, when the shielding plate is attached to the space of the structural member, the elastic member is deformed according to the shape of the space of the structural member and is in close contact with the structural member.

  As a result, the shielding effect can be enhanced by bringing the shielding plate into close contact with the structural member with a simple configuration.

  In the shielding plate of the present invention, the elastic member is arranged on the opposite side of the flat plate member with respect to the fitting portion and the fitting portion to be fitted to the peripheral portion so as to sandwich the peripheral portion. It is preferable to provide an elastic part.

  In this shielding plate, the elastic member includes a fitting portion that fits with the peripheral portion so as to sandwich the peripheral portion, and an elastic portion that is disposed on the opposite side of the flat plate member with respect to the fitting portion.

  Therefore, the elastic member can be securely fixed to the flat plate member by sandwiching the peripheral edge portion of the flat plate member with the fitting portion, and when the shielding plate is attached to the space of the structural member, the elastic portion is , It can be securely adhered to the structural member.

  In the shielding plate of the present invention, the elastic member includes an elastic layer and a pressure-sensitive adhesive layer formed on a surface of the elastic layer, the elastic member is disposed outside the peripheral edge, and the elastic layer is An overlapping portion that is overlapped by being bonded to each other via the pressure-sensitive adhesive layer, and an adhesive that is continuous from the overlapping portion and is adhered to one surface and the other surface of the peripheral portion to be adhered to the peripheral portion It is suitable to provide a part.

  In this shielding plate, the overlapping portion can be fixed to the flat plate member by the sticking portion, and the overlapping portion can be securely adhered to the structural member to which the shielding plate is attached.

  The shielding plate of the present invention further includes a flexible sheet that is laminated on at least one surface of the flat plate-like member and includes an extending portion that extends outward from a peripheral edge portion of the flat plate-like member. Is preferred.

  With this shielding plate, the flexible extension portion can be reliably attached to the structural member to which the shielding plate is attached.

  On the other hand, by bending the flexible extension part, the shielding plate can be reliably disposed on the structural member having a complicated shape, or by bending the flexible extension part, While the liquid and / or solid in the space of the structural member can be passed, the space of the structural member can be reliably shielded.

  In the shielding plate of the present invention, it is preferable that the shielding plate further includes a fixing member that is attached to the flat plate-like member and can be fixed in the space of the structural member.

  In the shielding plate, a fixing member that can be fixed in the space of the structural member is provided in the flat plate-like member. Therefore, the shielding plate can be installed in the space of the structural member without separately forming the fixing member.

  As a result, the shielding plate can be easily installed in the space of the structural member.

  In addition, the vehicle structure of the present invention is characterized by including the above-described shielding plate.

  Therefore, this vehicle structure can absorb an impact reliably at the time of a collision.

  According to the shielding plate of the present invention, it is possible to absorb the impact reliably and improve the production efficiency.

  Further, according to the vehicle structure of the present invention, it is possible to reliably absorb an impact at the time of a collision.

It is a side view which shows 1st Embodiment of the shielding board of this invention. It is sectional drawing which follows the AA line shown by FIG. It is the principal part perspective view seen from the upper left which shows the vehicle as an example of the vehicle structure provided with the shielding board shown by FIG. FIG. 4 is a left side view of a main part of the vehicle shown in FIG. 3. FIG. 4 is a perspective view of a main part viewed from the upper left side showing a case where an external force is applied to the vehicle shown in FIG. 3. FIG. 6 is an enlarged view of the left shielding plate shown in FIG. 5. It is the perspective view seen from the upper left which shows 2nd Embodiment of this invention. It is a left view which shows 3rd Embodiment of this invention. FIG. 9 is an explanatory view showing a method of attaching the elastic member to the peripheral edge in the fourth embodiment of the present invention, wherein (a) is a step of opening the tip of the fitting portion toward both sides in the thickness direction; (B) shows the process of sticking the front-end | tip of a fitting part to a peripheral part. FIG. 10 is an explanatory view showing a method of attaching an elastic member to a peripheral edge portion in a fifth embodiment of the present invention, wherein (a) shows a pressure-sensitive adhesive layer on the inner surface of the elastic member, and a peripheral edge of a flat member. (B) shows the process which adhere | attaches the width direction edge part of an elastic member on the left side surface and right side surface of a flat member. It is a perspective view which shows 6th Embodiment of this invention. 12 is a cross-sectional view of the first concave portion and the second concave portion of FIG. 11, and is a cross-sectional view taken along the line BB shown in FIG. 11. FIG. 13 is a cross-sectional view of the filling portion of FIG. 11 and is a cross-sectional view taken along the line CC shown in FIG. 14 is a cross-sectional view of the bent portion of FIG. 11, and is a cross-sectional view taken along the line DD shown in FIG. 11. FIG. 15 is a perspective view for explaining bending at the bent portion of FIG. FIG. 16 is a perspective view showing a bent portion according to the seventh embodiment of the present invention. FIG. 17 is a perspective view showing a bent portion according to the eighth embodiment of the present invention. FIG. 18 is a perspective view showing a bent portion according to the ninth embodiment of the present invention. FIG. 19 is a cross-sectional view showing a bent portion according to the tenth embodiment of the present invention. FIG. 20 is a perspective view showing an eleventh embodiment of the present invention. FIG. 21 is an enlarged perspective view showing the flexure of FIG. 22 is an enlarged cross-sectional view of the elastic member of FIG. 20, and is a cross-sectional view taken along the line EE shown in FIG. 20. FIG. 23 is an explanatory view showing a method for attaching the elastic member to the peripheral edge, where (a) is a step of preparing an elastic adhesive sheet, and (b) is to peel off the release film at the center in the width direction. Step (c) is a step of bonding the centers in the width direction to each other, (d) is a step of making the sticking part face the peripheral edge of the flat plate member, and (e) is a step of attaching the sticking portion to the flat plate member. The process of sticking to a peripheral part is shown.

  FIG. 1 is a perspective view showing a first embodiment of the shielding plate of the present invention, and FIG. 2 is a partial cross-sectional view taken along the line AA shown in FIG. In addition, when mentioning a direction regarding the shielding board 1, the direction when it fixes to a perpendicular direction is made into a reference | standard, and, specifically, the direction arrow shown to each figure is made into a reference | standard.

  As shown in FIG. 1, the shielding plate 1 is mounted on the flat plate member 2, the elastic member 3 provided on the peripheral edge of the flat plate member 2 over the entire circumference, and the flat plate member 2, and is a space of the structural member. The clip 4 is provided as a fixing member that can be fixed to.

  As shown in FIG. 2, the flat plate-like member 2 has a cross-sectional ladder shape (cross-sectional harmonica shape) and is opposed to the left side plate 5 and the left side plate 5 as the first flat plate with an interval in the left-right direction (horizontal direction). A right plate 6 as a second flat plate and a plurality of column portions 7 provided between the left plate 5 and the right plate 6 are integrally provided.

  As shown in FIG. 1, the flat plate-like member 2 is formed in a predetermined shape corresponding to the cross-sectional shape of the space of a structural member to be described later. The front side is formed in a substantially pentagonal shape in a side view projecting forward from the upper end portion on the rear side to the center portion in the vertical direction.

  The left side plate 5 and the right side plate 6 are formed in a flat plate shape corresponding to the outer shape of the flat plate member 2.

  A plurality of the column portions 7 are arranged in parallel across the entire surface of the flat plate member 2 with an interval in the front-rear direction (a direction orthogonal to the thickness direction of the flat plate member 2). Each column portion 7 is formed in a straight line so as to incline backward as it goes upward. Moreover, the pillar part 7 is formed in the flat form extended along the left-right direction, as shown in FIG.

  And in the flat member 2, between each pillar part 7 is divided as the weak part 8 (stress concentration part) weaker than the part in which the pillar part 7 is formed.

  That is, the fragile portion 8 is formed along one direction (shown as a fragile portion forming direction F in FIG. 1) between the column portions 7 formed in a straight line. The flat plate member 2 is formed over the entire surface with an interval in a direction perpendicular to the fragile portion forming direction F.

  The flat plate-like member 2 is formed, for example, by synthetic extrusion such as polyethylene, polypropylene, polycarbonate, polyester, polystyrene, acrylic, etc., into a sheet shape having the above-mentioned cross-sectional shape by integral extrusion molding, and then the shape described above. It can be formed by punching. Preferably, it is formed from polypropylene or polycarbonate.

  The flat plate member 2 can be formed, for example, by punching a commercially available plastic cardboard sheet (dumpler sheet) into the shape described above.

The basis weight of the flat plate member 2 is, for example, 200 to 2000 g / m ² , preferably 300 to 1500 g / m ² . If the basis weight of the flat member 2 is less than the above range, there is a problem that the strength of the flat member 2 becomes too low. Moreover, when there are more fabric weights of the flat member 2 than the said range, there exists a malfunction that the flat member 2 becomes difficult to bend.

  The vertical compressive strength in the direction in which the fragile portions of the flat plate member 2 are arranged side by side is, for example, 0.02 to 0.9 times the vertical compressive strength in the fragile portion forming direction F, and preferably 0.05 to 0.00. 5 times. If the vertical compressive strength in the direction in which the fragile portions of the flat plate member 2 are arranged side by side is lower than the above range, it may be difficult to maintain the shape of the flat plate member 2. Moreover, when the vertical compressive strength in the direction where the weak part of the flat member 2 is arranged in parallel is higher than the said range, it may become difficult to bend the flat member 2 along the intended direction.

  The vertical compressive strength (end crush) is obtained in accordance with JIS Z 0403-2 in the above-described direction.

  The left side plate 5 and the right side plate 6 are, for example, arranged to face each other with an interval of 0.8 to 10 mm, preferably 2 to 5 mm, and their thickness is, for example, 0.1 to 1 mm, preferably 0. .2 to 0.6 mm.

  The column part 7 is arranged in parallel at an interval of 0.8 to 10 mm, preferably 2 to 5 mm, for example, and the thickness thereof is, for example, 0.1 to 1 mm, preferably 0.2 to 0.6 mm. It is. When the column part 7 is arrange | positioned at intervals wider than the said space | interval, there exists a malfunction that the intensity | strength of the flat member 2 becomes low too much. Moreover, when the column part 7 is arrange | positioned by the space | interval narrower than the said space | interval, there exists a malfunction that the flat member 2 becomes difficult to bend.

  As shown in FIG. 2, the elastic member 3 includes a fitting portion 9 that fits with the peripheral portion so as to sandwich the peripheral portion of the flat plate member 2, and an opposite side of the flat member 2 with respect to the fitting portion 9. And an elastic portion 10 to be arranged.

  The fitting portion 9 is formed in a substantially U-shaped cross section that opens toward the flat plate member 2 so as to correspond to the peripheral end portion of the flat plate member 2.

  Examples of the fitting portion 9 include pressure-sensitive adhesive sheets, pressure-sensitive adhesive films and rigid molded products formed from synthetic resins such as polyethylene, polypropylene, polyvinyl chloride, polyester, nylon, polyurethane, and epoxy, and ethylene / propylene rubber foams. And an adhesive sheet formed from a synthetic rubber foam such as ethylene / propylene / diene rubber foam. Preferably, the adhesive sheet formed from a synthetic rubber foam is mentioned. More preferably, an adhesive sheet formed from an ethylene / propylene / diene rubber foam is used.

  The elastic part 10 is formed in a substantially rectangular shape in sectional view. The elastic portion 10 is formed of, for example, a synthetic rubber foam such as a polyurethane rubber foam, an ethylene / propylene rubber foam, an ethylene / propylene / diene rubber foam, or preferably an ethylene / propylene / diene rubber foam.

  The elastic member 3 is formed by adhering the elastic portion 10 to the fitting portion 9 with an adhesive or the like.

  The clip 4 is formed of, for example, a hard synthetic resin molded product or the like, and as shown in FIG. The fixed portions 12 are integrally provided, and are arranged one by one below the front side and the rear side of the flat plate-like member 2.

  The sandwiching portion 11 is integrally provided with a bottom portion 13 having a substantially rectangular shape in plan view and two sandwiching pieces 14 extending upward from both left and right end edges of the bottom portion. The length of the bottom 13 in the left-right direction is, for example, 2 to 18 mm, preferably 4 to 12 mm. Moreover, the thickness of the bottom part 13 is 0.5-5 mm, for example, Preferably, it is 1-3 mm, and the thickness of the clamping piece 14 is 0.5-3 mm, for example, Preferably, it is 1-2 mm.

  The fixed portion 12 is formed in a substantially cylindrical shape so as to protrude downward from the lower end surface of the bottom portion 13. Moreover, the radial direction length of the fixing | fixed part 12 is formed shorter than the front-back direction length of the bottom part 13, and the left-right direction length.

  In order to manufacture the shielding plate 1, first, the fitting portion 9 of the elastic member 3 is folded and adhered so as to sandwich the peripheral edge portion of the flat plate member 2 formed in a predetermined shape, and then the clip 4. The flat plate member 2 and the elastic member 3 are sandwiched by the sandwiching pieces 14 until the elastic member 3 comes into contact with the bottom portion 13. In this way, the shielding plate 1 is obtained.

  The shielding plate 1 thus obtained is used for partitioning the space of the structural member. Examples of the structural member include a cowl member of a vehicle.

  Hereinafter, the usage method of the shielding plate 1 shown in FIG. 1 will be described with reference to an example applied to the cowl portion 24 of the vehicle 21 as an example of the vehicle structure.

  FIG. 3 is a perspective view of a main part when a cowl portion of a vehicle as an example of a vehicle structure including the shielding plate shown in FIG. 1 is viewed from the upper left. FIG. 4 is a left side view of an essential part of the vehicle shown in FIG. In FIG. 3, for convenience, the inside of the cowl portion 24 is directly displayed, and the elastic member 3 of the shielding plate 1 is omitted.

  As shown in FIG. 3, the vehicle 21 includes a windshield 22, an engine hood 23, and a cowl portion 24 provided between the windshield 22 and the engine hood 23.

  The cowl portion 24 is disposed along the left-right direction of the vehicle 21 and includes a cowl frame 25 having a structure that is recessed downward. The cowl frame 25 is integrally provided with an engine room side groove portion 25a formed on the front side and a vehicle interior side groove portion 25b that communicates with the rear side of the engine room side groove portion 25a and is formed deeper. A cowl space 26 as an example of a space of a structural member is defined by the side groove portion 25a and the vehicle interior side groove portion 25b. In addition, an outside air introduction port 27 for introducing outside air into the passenger compartment is formed in the rear wall of the passenger compartment side groove 25b. Further, the bottom walls of the engine compartment side groove portion 25a and the vehicle compartment side groove portion 25b are provided with fixing portions at positions corresponding to the clips 4 disposed on the front side and the rear side of the shielding plate 1, respectively, as shown in FIG. An insertion hole 28 is formed.

  And the shielding board 1 is arrange | positioned in the cowl space 26 so that it may be arrange | positioned in the left-right direction both sides of the external air inlet 27, as shown in FIG.

  In order to arrange the shielding plate 1 in the cowl space 26, as shown in FIG. 4, the fixing portion 12 of the front clip 4 is fixed to the fixing portion insertion hole 28 of the engine room side groove portion 25a. The portion 12 is inserted from above into the fixed portion insertion hole 28 of the engine room side groove portion 25b until the lower end surface of the bottom portion 13 comes into contact with the bottom surface of the cowl frame 25, and the elastic member 3 is in close contact with the inner peripheral surface of the cowl frame 25. To fix.

  Thereby, in the cowl space 26, the portion where the outside air introduction port 27 is formed is shielded, and hot air and odor from the engine room can be prevented from flowing into the vehicle interior via the outside air introduction port 27. it can.

  Hereinafter, the operation of the shielding plate 1 when an impact force I as an external force is applied to the vehicle 21 will be described with reference to FIGS. 5 and 6. Note that the direction in which the impact force I is applied (the direction indicated by the arrow in FIG. 1) is, for example, that the vehicle 21 collides head-on and the collided object comes on the engine hood 23 and the cowl portion 24 of the vehicle 21. This is assumed.

  FIG. 5 is a perspective view of the main part as seen from the upper left, showing a case where an external force is applied to the vehicle shown in FIG. 6 is an enlarged view of the left shielding plate shown in FIG.

  As shown in FIG. 5, the shielding plate 1 is bent when an impact force I is applied to the vehicle 21.

  Specifically, first, an impact force I is applied from a direction substantially orthogonal to the weakened portion forming direction F, that is, from a diagonally upper front side (see FIG. 1).

  Then, a stress is generated in the flat plate member 2 according to the impact force I, and the generated stress corresponds to the way the impact force I is applied (the magnitude, direction, applied portion, etc. of the impact force). It concentrates on any part of the member 2.

  Since the fragile portion 8 is formed over the entire surface of the flat plate member 2, as shown in FIG. 6, in the fragile portion 8 where stress is particularly concentrated, either the left side plate 5 or the right side plate 6 is in the left-right direction. By bending, the flat plate member 2 is bent.

  Specifically, the flat plate-like member 2 is bent along the fragile portion forming direction F so that the right side plate 6 between the column portions 7 protrudes leftward at the fragile portion 8 on the front side thereof, The fragile portion 8 on the rear side is bent along the fragile portion forming direction F so that the left side plate 5 between the column portions 7 protrudes rightward, thereby bending at the two fragile portions 8. doing.

  Thereby, when the impact force I is applied, the flat member 2 is bent at the fragile portion 8 corresponding to the impact force I, and the impact force I can be absorbed.

  And according to this shielding board 1, since the weak part 8 bent by the impact force I is formed over the whole surface of the flat member 2, the weak part 8 is applied to any part where the impact force I is applied. The flat plate member 2 can be bent. Moreover, since the fragile portion 8 is provided over the entire surface of the flat plate member 2, the impact force I can be applied to the fragile portion 8 regardless of the shape of the flat plate member 2.

  As a result, the shielding plate 1 can reliably absorb the impact force I and can improve the production efficiency.

  Further, according to the shielding plate 1, the flat plate member 2 is formed of the left side plate 5, the right side plate 6 and the column part 7, and the fragile part 8 is formed between the column parts 7. In the portion 7, the strength of the shielding plate 1 can be maintained, and the flat member 2 can be reliably bent in the fragile portion 8 between the column portions 7.

  In the shielding plate 1, the fragile portion 8 is formed along the fragile portion forming direction F. Therefore, the flat plate-like member 2 can be reliably bent along the fragile portion forming direction F at the site where the impact force I is applied.

  As a result, the shielding plate 1 can absorb the impact force I more reliably.

  In the shielding plate 1, the plurality of weak parts 8 are arranged in parallel in the direction perpendicular to the weak part forming direction F. Therefore, the flat plate-like member 2 can be bent in the direction orthogonal to the fragile portion forming direction F regardless of the portion to which the impact force I is applied.

  As a result, the shielding plate 1 can absorb the impact force I more reliably.

  In the shielding plate 1, the vertical compressive strength in the direction in which the fragile portions 8 are arranged side by side is 0.02 to 0.9 times the vertical compressive strength in the fragile portion forming direction F. That is, the vertical compressive strength in the direction in which the fragile portions 8 are arranged side by side is set lower than the vertical compressive strength in the fragile portion forming direction F. Therefore, for example, when the vehicle 21 collides head-on and the collided object is placed on the engine hood 23 and the cowl portion 24 of the vehicle 21, the impact force from the direction in which the fragile portions 8 are arranged side by side. By adding I, the flat plate member 2 can be easily bent.

  As a result, this shielding board 1 can absorb more reliably the impact force I from the direction where the weak part 8 is arranged in parallel.

  In the shielding plate 1, the elastic member 3 is disposed on the peripheral edge of the flat plate member 2 over the entire circumference. Therefore, when the shielding plate 1 is attached to the cowl space 26, the elastic member 3 is deformed according to the shape of the cowl space 26 and is in close contact with the cowl frame 25.

  As a result, the shielding plate 1 can be brought into close contact with the cowl frame 25 with a simple configuration to improve the shielding effect.

  In this shielding plate 1, the elastic member 3 is arranged on the opposite side of the flat plate member 2 with respect to the fitting portion 9 that fits the peripheral portion so as to sandwich the peripheral portion of the flat plate member 2. The elastic part 10 is provided.

  Therefore, the elastic member 3 can be reliably fixed to the flat plate member 2 by sandwiching the peripheral edge portion of the flat plate member 2 with the fitting portion 9, and when the shielding plate 1 is attached to the cowl space 26. The elastic part 10 can be securely attached to the cowl frame 25.

  The shielding plate 1 is provided with a clip 4 that can be fixed to the cowl space 26 on the flat plate member 2. Therefore, the shielding plate 1 can be installed in the cowl space 26 without separately forming the clip 4.

  As a result, the shielding plate 1 can be easily installed in the cowl space 26.

And since this vehicle 21 is equipped with the shielding board 1, it can absorb the impact force I reliably at the time of a collision.
(Modification)
FIG. 7 is a perspective view showing the second embodiment of the present invention as viewed from the upper left. In FIG. 7, members similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  In the first embodiment described above, the shielding plate 1 includes the clip 4 that can be fixed to the cowl space 26. For example, as shown in FIG. 7, the cowl frame 25 has a front wall and a rear wall. In the case where a member such as the cross-linking plate 32 is provided therebetween, and the columnar first projecting portion 34 is formed on the cross-linking plate 32, the clip 4 may not be provided.

  In that case, specifically, two first protrusions 34 are formed on the bridging plate 32 at intervals in the front-rear direction.

  The shielding plate 31 includes a flat plate member 2 and an elastic member 3. In addition, two through holes 33 are formed in the shielding plate 31 at substantially the center of the flat plate member 2 in an arrangement corresponding to the first protrusions 34.

  The shielding plate 31 is attached, for example, by inserting the first projecting portion 34 toward the left side through the through hole 33 and fixing the first projecting portion 34 to the bridge plate 32 on the right side.

  This shielding board 31 has the same effect as the shielding board 1 of 1st Embodiment. And since the clip 4 is not required in the shielding board 31, production efficiency can be improved further.

  FIG. 8 is a left side view showing the third embodiment of the present invention. In FIG. 8, the same members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

  In the first embodiment described above, the shielding plate 1 includes the straight column portions 7 that are arranged in parallel at intervals. For example, as shown in FIG. 8, the side view is arranged in a staggered manner. A substantially circular column portion 42 may be provided.

  And between each pillar part 42, it is divided as the weak part 43 weaker than the part in which the pillar part 42 is formed.

  That is, the fragile portion 43 includes three fragile portions in the front-rear direction, the direction inclined backward as it goes upward, and the direction inclined forward as it goes upward between the column portions 42 arranged in a staggered manner. It is formed along the forming direction F. Moreover, each weak part formation direction F cross | intersects at an angle of 60 degrees, respectively.

  This shielding board 41 has the same effect as the shielding board 1 of 1st Embodiment. Moreover, in the shielding plate 41, the fragile portions 43 are formed along the three fragile portion forming directions F, and are arranged side by side in a direction orthogonal to the respective fragile portion forming directions F. Therefore, the flat plate member 2 can be bent in any direction regardless of the portion to which the impact force I is applied.

  As a result, the shielding plate 41 can absorb the impact force I even more reliably.

  FIG. 9 is an explanatory diagram showing a method of attaching the elastic member to the peripheral edge in the fourth embodiment of the present invention. In the following drawings, the same members as those in the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  In the description of FIG. 2 described above, the elastic member 3 is formed of separate members of the fitting portion 9 and the elastic portion 10, but for example, as shown in FIG. It can be formed from one member.

  That is, the elastic layer 44 is formed from the foam forming the elastic portion 10 described above, and the elastic portion 10 having a substantially rectangular cross section as a base and the fitting portion 9 having a substantially U-shaped cross section as a free portion. Is formed integrally.

  An adhesive layer 45 made of a known adhesive is laminated on the inner surface of the fitting portion 9.

  And in order to stick this elastic member 3 to the peripheral part of the flat member 2, first, as shown by the broken line arrow of FIG. Open to both sides. Subsequently, as shown in the arrow in FIG. 9A and FIG. 9B, after the fitting portion 9 is inserted into the flat plate member 2, the inner surface of the fitting portion 9 is interposed via the adhesive layer 45. It sticks to the peripheral part of the flat member 2.

  In this method, since the elastic member 3 is integrally formed from one elastic layer 44, the configuration of the elastic member 3 can be simplified.

  FIG. 10 is an explanatory view showing a method of attaching the elastic member to the peripheral edge in the fifth embodiment of the present invention.

  In the above description, the elastic part 10 and the fitting part 9 are formed in a substantially rectangular cross section and a substantially U-shaped cross section, respectively. For example, as shown in FIG. 3 can also be formed in a trapezoidal cross section.

  The elastic member 3 is formed in a substantially trapezoidal shape in cross-section in which the width (length in the thickness direction of the flat plate-like member 2) is gradually narrowed toward the outside (outside of the peripheral edge).

  In order to attach the elastic member 3 to the peripheral portion of the flat plate member 2, first, as shown by the arrow in FIG. 10A, the adhesive layer on the inner surface of the elastic member 3 (opposite surface facing the peripheral portion). 45 is brought into contact with the peripheral edge of the flat plate member 2. As a result, the center in the width direction of the inner surface of the elastic member 3 is bonded to the end surface of the peripheral portion of the flat plate member 2 via the adhesive layer 45.

  Next, as shown in FIG. 10B, both end portions in the width direction of the elastic member 3 are bonded to both the left side surface and the right side surface of the peripheral portion of the flat plate member 2 through the adhesive layer 45. Specifically, as shown by the arrows in FIG. 10B, while pulling both ends in the width direction of the elastic member 3 toward the inside of the flat plate member 2, it is inserted through the adhesive layer 45. Adhere to both sides of the periphery.

  The elastic member 3 is formed into a substantially circular cross section (curved shape that bulges outward) by pulling at both ends in the width direction as described above, and an elastic portion 10 disposed outside the peripheral portion, The fitting parts 9 arranged on both sides of the part are respectively formed.

  Since the elastic member 3 is formed in a substantially circular cross section (curved cross section) after being attached to the peripheral portion, the elastic member 3 is compared with the substantially rectangular elastic member 3 in FIG. The peeling due to the contact with the cowl portion 24 can be effectively prevented. Therefore, the adhesion between the elastic member 3 and the peripheral edge of the flat plate member 2 can be enhanced. As a result, the shielding effect of the shielding plate 1 using the elastic member 3 can be further improved.

  FIG. 11 is a perspective view showing a sixth embodiment of the present invention, FIG. 12 is a cross-sectional view of the recess shown in FIG. 11, and is a cross-sectional view taken along the line BB shown in FIG. 11 is a cross-sectional view of the filling portion in FIG. 11, which is a cross-sectional view along the line CC shown in FIG. 11, and FIG. 14 is a cross-sectional view of the bent portion in FIG. FIG. 15 is a cross-sectional view taken along the line, and FIG. 15 is a perspective view for explaining bending at the bent portion of FIG. Note that the shielding plate 1 shown in FIG. 11 is applied in an appropriate posture corresponding to the shape of the cowl of the vehicle structure. For convenience, the direction arrow shown in FIG. Will be described.

  In FIG. 11, the shielding plate 1 has a cross-section (cross-section in a direction perpendicular to the front-rear direction) ladder shape, is a substantially rectangular flat strip shape extending in the front-rear direction, and the lower end of the front end and the lower end of the rear end are on the lower side The flat plate-like member 2 having the second projecting portions 53 projecting from each other is provided.

  The flat plate-like member 2 includes a first concave portion 16, a second concave portion 19 and a filling portion 17 as reinforcing portions, and a bent portion 18.

  The first recess 16 is partially formed on the flat plate member 2, specifically, provided on the front end surface of the flat plate member 2 and formed so that the left side of the front end edge is compressed in an inclined manner. Yes. Specifically, as shown in FIG. 11 and FIG. 12, the first recess 16 is formed in an inclined shape (triangular cross section) that approaches the right side as the left side moves forward.

  Moreover, the 1st recessed part 16 can be formed by hot-pressing the front-end surface of the flat member 2 from the upper side, for example.

  The second recess 19 is partially formed on the flat plate member 2. Specifically, the second recess 19 is provided at the front end portion of the flat plate member 2, and is arranged behind the first recess 16 with an interval therebetween. It is formed so as to extend along a direction (a direction orthogonal to the fragile portion forming direction F). Moreover, the 2nd recessed part 19 is formed so that the left side part of the flat member 2 may be compressed toward the right side (in the thickness direction middle). Specifically, the second recess 19 is formed to be recessed in a substantially rectangular shape in cross section.

  The 2nd recessed part 19 can be formed by hot-pressing the left side of the flat member 2 from the left side, for example.

  As shown in FIGS. 11 and 13, the filling portion 17 is partially formed on the flat plate member 2. Specifically, the filling portion 17 is arranged on the upper portion of the flat plate member 2, and in the flat plate member 2 in the front-rear direction. Is formed over. The filling portion 17 is formed by filling a space (filling space) defined by a pair of column portions 7 facing each other, the left side plate 5 and the right side plate 6 on which they are installed, with a filler. As a filler which forms the filling part 17, the same thing as the above-mentioned synthetic resin which forms the flat member 2, and / or the above-mentioned synthetic rubber foam is mentioned, for example.

  The filling portion 17 can be formed by injecting the above-described synthetic resin into the above-described filling space from the front end and / or the rear end thereof.

  As shown in FIGS. 11 and 14 (a), the bent portion 18 is partially formed on the flat plate member 2, specifically, provided at the rear end portion of the flat plate member 2, and the fragile portion. It is formed so as to be inclined with respect to the forming direction F. That is, the bent portion 18 is formed in a straight line shape from the rear end surface to the lower end surface in a side view, and is inclined downward toward the front. The bent portion 18 is formed so that the left side portion of the flat plate member 2 (the left side plate 5 and the column portion 7 indicated by a broken line in FIG. 14) is compressed toward the right side (in the thickness direction). Specifically, the bent portion 18 is formed to be recessed in a substantially triangular shape in cross section.

  Thereby, the bending part 18 is formed so that bending is possible along the above-mentioned inclination direction (direction where the bending part 18 extends) so that the arrow of FIG.14 (b) may be referred.

  Moreover, the bending part 18 can be formed by pressing the left side of the flat member 2 from the left side, for example.

  Unlike the fragile portion 8 that bends when the impact force I is applied, the bent portion 18 is formed as a portion that is bent when an external force (stress) is applied by an operator described later.

  In the shielding plate 1, when the impact force I is applied to the front end portion of the flat plate member 2 along the fragile portion forming direction F, the flat plate member 2 attempts to bend, and the first recess 16 and the first The two recesses 19 can reinforce them and their vicinity.

  Therefore, the strength of such a part can be increased.

  As a result, it is possible to absorb the impact force I by bending the flat plate member 2 while maintaining a predetermined shape.

  Even if the stress S along the fragile portion forming direction F is applied to the upper side of the flat plate member 2, the left side plate 5, the right side plate 6, and the column portion 7 adjacent thereto can be reinforced by the filling portion 17.

  Therefore, the strength of such a part can be increased.

  As a result, it is possible to absorb the impact force I by bending the flat plate member 2 while maintaining a predetermined shape.

  Further, when the cowl portion 24 (see FIG. 3) is formed in a complicated shape, as shown in FIG. 14, the operator or the like bends the bent portion 18 to ensure that the shielding plate 1 is secured to the cowl portion. 24.

  Specifically, when there is a narrow space in front of the place where the shielding plate 1 is disposed, the bent portion 18 is bent, and after passing through the narrow space in a state where the flat plate member 2 is folded, the bent portion is again formed. By extending 18, the flat plate-like member 2 is arranged in an open state.

  In the above description, the bent portion 18 is formed to be inclined with respect to the fragile portion forming direction F. For example, as shown by a virtual line in FIG. It can also be formed into a shape.

  Preferably, as shown by the solid line in FIG. 11, the bent portion 18 is formed in an inclined shape with respect to the fragile portion forming direction F.

  When the bent portion 18 is formed perpendicular to the fragile portion forming direction F, as shown in FIG. The end portions 29 facing the bent portion 18 are arranged to face each other in the fragile portion forming direction F. For this reason, the end portions 29 come into contact with each other when the bent portion 18 is bent, so that the movable range of bending of the bent portion 18 may be limited, and the right side plate 6 of the bent portion 18 is pulled by the contact described above. And the right side plate 6 may be damaged.

  On the other hand, when formed so as to be inclined with respect to the fragile portion forming direction F, as shown in FIG. 15, the end portion 29 desired for the bent portion 18 of the erection portion 20 is in a direction G perpendicular to the direction along the bent portion 18. They are not arranged opposite to each other but are arranged in a bowl shape. Therefore, the end portions 29 on both sides of the bending portion 18 are close to each other while preventing the end portions 29 of the erection portion 20 from contacting each other when the bending portion 18 is bent (see FIG. 14B). The bent portion 18 can be flexibly bent, and damage (specifically, cracking, etc.) of the right side plate 6 of the bent portion 18 can be prevented.

  16 is a perspective view showing a bent portion according to a seventh embodiment of the present invention, FIG. 17 is a perspective view showing a bent portion according to an eighth embodiment of the present invention, and FIG. 18 is a view of the ninth embodiment of the present invention. The perspective view which shows a bending part, FIG. 19 is sectional drawing which shows the bending part of 10th Embodiment of this invention.

  In the above description, the bent portion 18 is formed so as to be cut out in a triangular shape in cross section, but the shape is not particularly limited. For example, as shown in FIGS. It can also be formed in a shape (FIGS. 16, 18 and 19) and a substantially W-shaped cross-sectional view (FIG. 17) so as to be recessed.

  In FIG. 16, the bent portion 18 is formed in a straight line extending orthogonally to the fragile portion forming direction F. Further, the width (length in the front-rear direction) of the bent portion 18 is a length that does not cause contact between the end portions 29 of the erection portion 20 when bent, that is, between the left side plate 5 and the right side plate 6 described above. It is set longer than the interval.

  The bent portion 18 is formed along the vertical direction and is formed so as to be bendable along the vertical direction.

  Moreover, the bending part 18 can be formed by hot-pressing the left side part of the flat member 2 from the left side, for example.

  Thereby, the flexible bending of the bending part 18 can be achieved.

  Therefore, when a flow of liquid (specifically, rainwater and / or cleaning liquid, etc.) and / or a solid foreign substance flowing therewith occurs in the cowl space 26 (see FIG. 3) of the cowl portion 24, it is caused by that. The flat plate member 2 can be bent by the pressing force, and the liquid and / or foreign matter flowing in the cowl space 26 (see FIG. 3) in the cowl portion 24 of the vehicle 21 can be passed.

  In FIG. 17, the bent portion 18 is partitioned by two substantially triangular compression portions 50.

  The bent portion 18 can achieve a more flexible bend by the two compressed portions 50. Therefore, the liquid and / or foreign matter flowing through the cowl space 26 (see FIG. 3) in the cowl portion 24 of the vehicle 21 can be more reliably passed.

  In FIG. 18, streaks 30 that are inclined with respect to the vertical direction are formed on the left side surface and the right side surface of the bent portion 18. That is, among the streaks 30, the left streak 51 formed on the left side surface of the bent portion 18 and the right streak 52 formed on the right side surface of the bent portion 18 protrude to the left side and the right side, respectively, and are spaced apart in the vertical direction. A plurality are arranged with a gap therebetween.

  Further, the left streak 51 and the right streak 52 are orthogonal to each other when projected in the left-right direction (thickness direction), more specifically, while the left streak 51 is inclined backward as it goes upward, The right streak 52 is inclined forward as it goes upward.

  The streak 30 is formed by applying heat and pressure simultaneously from the left and right directions by a heat press in the left and right direction, specifically, a heat press machine having two molds corresponding to the left streak 51 and the right streak 52. .

  In the shielding plate 1, the bendability of the bent portion 18 can be enhanced by the streak 30. Therefore, the liquid and / or foreign matter flowing through the cowl space 26 (see FIG. 3) in the cowl portion 24 of the vehicle 21 can be reliably passed.

  At the same time, since the left streak 51 and the right streak 52 of the bent portion 18 are orthogonal when projected in the left-right direction, the mechanical durability of the bent portion 18 can be enhanced.

  In the description of FIG. 18, the bent portion 18 is formed over the entire vertical direction of the flat plate member 2, but can also be formed, for example, in the vertical direction end portion or in the middle of the direction.

  In FIG. 19, the flat plate member 2 is formed with slits 35 for dividing the flat plate member 2 into two, and the first flexible sheet 36 is provided on the left side of the flat plate member 2 on both sides of the slit 35. A bent portion 18 is formed.

  The first flexible sheet 36 is formed from, for example, the above-described synthetic resin, for example, synthetic rubber such as ethylene / propylene rubber, ethylene / propylene / diene rubber, foam, etc., and is made of paper, nonwoven fabric, woven fabric, etc. It is made of fiber.

  In the bent portion 18, the first flexible sheet 36 can achieve flexible bending of the bent portion 18, and the liquid flowing into the cowl space 26 (see FIG. 3) in the cowl portion 24 of the vehicle 21 and / or Or a foreign material can be passed.

  20 is a perspective view showing an eleventh embodiment of the present invention, FIG. 21 is an enlarged perspective view showing a flexible portion of FIG. 20, and FIG. 22 is an enlarged sectional view of the elastic member of FIG. FIG. 23 is a cross-sectional view taken along line E-E shown in FIG. 23, and is an explanatory view showing a method of attaching the elastic member to the peripheral portion.

  In FIG. 20, the shielding plate 1 further includes a second flexible sheet 37 as a flexible sheet.

  The second flexible sheet 37 is laminated on the right side surface of the flat plate member 2, and specifically, is disposed so as to include the second protruding portion 53 of the flat plate member 2 in a side view. .

  That is, the second flexible sheet 37 includes an extending portion 38 that extends outward (forward, backward, and downward) from the peripheral edge of the second protrusion 53 of the flat plate-like member 2.

  The second flexible sheet 37 is formed of, for example, the same material as that for forming the first flexible sheet 36, and is preferably formed of the above-described synthetic rubber.

  The second flexible sheet 37 includes a bent portion 39 and a bellows portion 40.

  As shown by the arrow in FIG. 21, the bending portion 39 is bent toward the left side in the extending direction of the extending portion 38, and the distal end portion of the extending portion 38 is placed on the left side of the peripheral portion of the flat plate member 2. It is formed by adhering to the surface via an adhesive (not shown).

  Further, as shown in FIG. 20, the bellows portion 40 extends forward from the front end portion, and is formed in a cross-sectional bellows shape. Further, the accordion portion 40 is formed with fold lines 54 extending in the front-rear direction at intervals in the up-down direction.

  Further, as shown in FIG. 22, the elastic member 3 includes the elastic layer 44 and the adhesive layer 45 as described above, and includes an overlapping portion 46 and a pasting portion 47 integrally.

  The overlapping portion 46 is disposed on the outer side (upper side) of the peripheral edge portion of the flat plate-like member 2, and is partitioned as a portion that overlaps each other when the elastic layer 44 is bonded to each other through the adhesive layer 45.

  The sticking portion 47 is continuous from the lower end portion of the overlapping portion 46, and is adhered to the left side surface and the right side surface of the peripheral portion of the flat plate member 2 via the adhesive layer 45, whereby the peripheral edge of the flat plate member 2 is obtained. It is divided as a part stuck on the both sides | surfaces of a part.

  And in order to adhere this elastic member 3 to the peripheral part of the flat member 2, first, as shown to Fig.23 (a), the elastic layer 44, the adhesive layer 45 formed in the surface, and its surface The elastic adhesive sheet 55 provided with the release film 57 formed in is prepared.

  In the release film 57, a cut 58 is formed in advance between the center in the width direction and both ends in the width direction.

  Next, as shown in FIG. 23B, the release film 57 at the center in the width direction is peeled off from the adhesive layer 45 along the cut line 58.

  Next, as shown in FIG. 23 (c), the elastic layer 44 at the center in the width direction is bonded via the pressure-sensitive adhesive layer 45 so that they overlap each other. Thereby, the overlap part 46 and the sticking part 47 which continues from it and extends in two directions are formed.

  Next, as shown in FIG. 23 (d), the release film 57 of the sticking portion 47 is peeled off from the pressure-sensitive adhesive layer 45, and the elastic layer 44 of the sticking portion 47 is end-faced at the peripheral edge of the flat plate member 2. To face. Subsequently, as shown in FIG. 23 (e), the elastic layer 44 of the attaching portion 47 is attached to the left side surface and the right side surface of the peripheral portion via the adhesive layer 45.

  In the shielding plate 1, the flexible extending portion 38 can be reliably attached to the cowl portion 24 (see FIG. 3) to which the shielding plate 1 is attached.

  On the other hand, by bending the flexible extension portion 38, the shielding plate 1 can be reliably arranged on the cowl portion 24 having a complicated shape, or the flexible extension portion 38 is left and right. By bending in the direction, the liquid and / or foreign matter described above in the cowl space 26 (see FIG. 3) of the cowl portion 24 can be passed.

  In the shielding plate 1, the overlapping portion 46 can be fixed to the flat plate member 2 by the sticking portion 47, and the overlapping portion 46 can be securely attached to the cowl portion 24.

  Moreover, since the overlap width W (see FIG. 22) of the overlap portion 46 can be set to a constant value, the shielding effect by the overlap portion 46 can be further enhanced.

  Furthermore, in arrangement | positioning with respect to the end surface of the peripheral part of the flat member 2 of the elastic member 3 (refer FIG.23 (d)), the continuous part of the overlap part 46 and the sticking part 47 is opposingly arranged by the center of the end surface of a peripheral part. By doing so, the sticking portion 47 can be easily placed in a balanced manner on the right side surface and the left side surface of the peripheral edge.

  A shielding board is used for space partitions, such as a cowl member of vehicles, for example.

DESCRIPTION OF SYMBOLS 1 Shield plate 2 Flat member 3 Elastic member 4 Clip 5 Left side plate 6 Right side plate 7 Column part 8 Fragile part 9 Fitting part 10 Elastic part 16 1st recessed part 17 Filling part 18 Bending part 19 2nd recessed part 21 Vehicle 24 Cowl part 25 Cowl body 26 Cowl space 30 Line 31 Shield plate 37 Second flexible sheet 38 Extension portion 41 Shield plate 42 Column portion 43 Fragile portion 44 Elastic layer 45 Adhesive layer 46 Overlap portion 47 Adhesion portion 51 Left stripe 52 Right Streak I Impact force F Weak zone formation direction

Claims (1)

A flat member;
A stress concentration portion that is formed over the entire surface of the flat plate-like member and bends when an external force is applied;
The flat plate member includes a first flat plate, a second flat plate arranged opposite to the first flat plate, and a plurality of pillars provided between the first flat plate and the second flat plate,
The stress concentration portion is a fragile portion formed between the pillar portions,
The first flat plate and the second flat plate are arranged with an interval of 0.8 to 10 mm,
The column parts adjacent to each other are arranged in parallel with an interval of 0.8 to 10 mm,
The basis weight of the flat plate member is 200 to 2000 g / m ² ,
Partitioning the space of the structural member extending in a predetermined direction, and used to shield a part of the space of the structural member in the space of the structural member ;
The said structural member is a part of vehicle , The shielding board characterized by the above-mentioned .

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