JP2021084489A - Vehicle body structure - Google Patents

Abstract

To provide a vehicle body structure capable of reducing low-frequency noise for an occupant in a vehicle interior through damping vibration of a roof panel.SOLUTION: A vehicle body structure 100 comprises a roof panel 104, a frame body 108 which encloses a periphery of the roof panel, and a cross member 114 which is arranged on the roof panel at an interior side in a manner that stretches across the frame body in a vehicle width direction. The cross member has: a first groove 158 and a second groove 160 which are concaved throughout its longitudinal direction; and a first flange 164 and a second flange 166 which are outwardly extended from upper edges 168 and 170 of the first and second grooves. The vehicle body structure also has first sealer materials 146 and 154 which are applied to a plurality of corresponding locations on the first and the second flanges of the cross member, bond the cross members and the roof panel, and has damping force. A vertical distance between the roof panel and the cross member is increased toward a center of the roof panel in the vehicle width direction. Volumes of the plurality of first sealer materials are increased toward the center of the roof panel in the vehicle width direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle body structure.

The roof panel of a vehicle such as an automobile has a thin plate shape and has a size that covers the upper part of the passenger compartment. For this reason, the roof panel easily vibrates, and when a low frequency is formed, it becomes one of the causes of low frequency noise for the occupants in the passenger compartment. Therefore, in general, the vibration of the roof panel is reduced by forming a bead on the roof panel or increasing the structural strength of the roof panel by a reinforcing member such as a cross member located on the passenger compartment side of the roof panel. Measures have been taken.

Patent Document 1 describes a vehicle roof including a pair of left and right roof side rails extending in the front-rear direction of the vehicle, reinforcement extending in the vehicle width direction between the pair of roof side rails, a roof panel, and an adhesive portion. The structure is described. The roof panel is located above the reinforcement and between the pair of roof side rails. Further, the roof panel is provided with concave lines extending in the front-rear direction of the vehicle at two locations arranged side by side when viewed in the vehicle width direction. The adhesive portion is provided at the intersection with the concave line on the upper surface of the reinforcement, and the roof panel and the reinforcement are adhered to each other by using a mastic adhesive.

In Patent Document 1, a concave line extending in the front-rear direction of the vehicle is provided on the roof panel, and an adhesive portion is provided at the intersection of the reinforcement and the concave line to bond the roof panel and the reinforcement to the roof panel. It is said that the generated vibration is efficiently damped.

Japanese Unexamined Patent Publication No. 2012-245988

However, in the vehicle roof structure of Patent Document 1, although the adhesive is arranged at the intersection of the reinforcement and the concave line, the adhesive is only used to fix the roof panel. That is, in Patent Document 1, there is room for improvement regarding damping the vibration of the roof panel.

In view of such a problem, an object of the present invention is to provide a vehicle body structure capable of attenuating the vibration of the roof panel and reducing low-frequency noise for occupants in the vehicle interior.

In order to solve the above problems, a typical configuration of the vehicle body structure according to the present invention is a vehicle body structure provided with a roof panel covering the upper part of the passenger compartment of the vehicle, and the vehicle body structure is a frame body surrounding the outer periphery of the roof panel. And a reinforcing member located on the passenger compartment side of the roof panel and extended to the frame in the vehicle width direction or the vehicle front-rear direction, and the reinforcing members are the first groove and the second groove recessed in the longitudinal direction thereof. It has grooves and first and second flanges that project outward from their upper ends along the first and second grooves, respectively, and the vehicle body structure further includes first and second flanges of the reinforcing member. It is applied to a plurality of corresponding parts of the roof panel and the reinforcing member and the roof panel are adhered to each other to have two first sealer materials having a predetermined damping force. The volume of the plurality of first sealers increases as they approach the center in the width direction or the center in the vehicle front-rear direction, and the volume of the plurality of first sealers increases as they approach the center in the vehicle width direction or the center in the vehicle front-rear direction of the roof panel.

According to the present invention, it is possible to provide a vehicle body structure capable of attenuating the vibration of the roof panel and reducing low-frequency noise for occupants in the vehicle interior.

It is a figure which shows the vehicle body structure which concerns on embodiment of this invention. It is a figure which shows the main part of the vehicle body structure of FIG. It is a figure which shows the AA cross section and the BB cross section of the vehicle body structure of FIG. 1B. It is a figure which shows the CC cross section of the car body structure of FIG. 1 (b), and the car body structure of a comparative example.

A typical configuration of the vehicle body structure according to the embodiment of the present invention is a vehicle body structure including a roof panel covering the upper part of the passenger compartment of the vehicle, and the vehicle body structure further includes a frame body surrounding the outer periphery of the roof panel and a roof. The frame is provided with a reinforcing member located on the passenger compartment side of the panel and extended in the vehicle width direction or the vehicle front-rear direction, and the reinforcing member includes a first groove and a second groove recessed in the longitudinal direction thereof. It has a first flange and a second flange that project outward from their upper ends along the first groove and the second groove, respectively, and the vehicle body structure further comprises a plurality of first and second flanges of the reinforcing member. Two first sealer materials, each of which is applied to the corresponding portion and adheres the reinforcing member and the roof panel and has a predetermined damping force, are provided, and the vertical distance between the roof panel and the reinforcing member is the center in the vehicle width direction of the roof panel. Alternatively, the volume is larger as it approaches the center in the vehicle front-rear direction, and the volume of the plurality of first sealer materials is larger as it approaches the vehicle width direction center or the vehicle front-rear direction center of the roof panel.

Of the vibrations of the roof panel, the main vibration that forms the low frequency that causes low-frequency noise is the drum with the center of the roof panel in the vehicle width direction or the center in the vehicle front-rear direction as the abdomen and the node near the outer edge of the roof panel. It is a vibration of the shape. Therefore, in the present invention, the first sealer material is applied so that the volume of the first sealer material having a damping force increases as the roof panel approaches the center in the vehicle width direction or the center in the vehicle front-rear direction. Therefore, among the vibrations of the roof panel, the vibrations at a predetermined portion corresponding to the abdomen can be more effectively damped. Therefore, it is possible to reduce low-frequency noise for occupants in the vehicle interior.

Further, in the present invention, the closer the roof panel and the reinforcing member are to the center in the vehicle width direction or the center in the vehicle front-rear direction of the roof panel, the larger the stroke direction, that is, the vertical interval, which is the same as the drum-shaped vibration of the roof panel. Therefore, the damping force of the first sealer material can be sufficiently exerted, and the vibration of the roof panel can be damped more effectively.

Further, in the present invention, the first sealer material having a damping force is applied to the first flange and the second flange that project outward from the upper ends of the first groove and the second groove of the reinforcing member, respectively. Therefore, the roof panel can be supported by the first flange and the second flange of the reinforcing member via the first sealer material, and the vibration of the roof panel can be further reduced. Further, since the first groove and the second groove are formed in the longitudinal direction of the reinforcing member, the vertical rigidity of the reinforcing member can be ensured.

The reinforcing member further has a plurality of protrusions each located between the two first sealer members and projecting in the longitudinal direction between the first groove and the second groove, and the vehicle body structure further includes a plurality of protrusions. It is preferable to provide a plurality of predetermined second sealer materials that are applied to the projecting portion and adhere the reinforcing member and the roof panel.

When assembling the vehicle body structure, the roof panel may be deformed up and down due to the cleaning water pressure in the process of cleaning the vehicle body skeleton to remove dust. Therefore, in the present invention, by providing a plurality of projecting portions between the first groove and the second groove of the reinforcing member, the vertical deformation of the roof panel is restricted to about the distance between the projecting portion and the roof panel. .. Therefore, it is possible to reduce the possibility that the first sealer material is crushed and extends in the horizontal direction between the first flange and the second flange and the roof panel, and the roof panel and the reinforcing member can be reliably adhered to each other. Further, since a predetermined second sealer material is applied to the plurality of projecting portions, sufficient adhesion between the roof panel and the reinforcing member can be ensured. The second sealer material does not have to have the same damping force as the first sealer material as long as the roof panel and the reinforcing member can be adhered to each other. Therefore, the manufacturing cost can be reduced.

It is preferable that holes for bleeding air are formed in each of the plurality of protrusions. As a result, when assembling the vehicle body structure, in the process of immersing the vehicle body in the electrodeposition tank, air can be reliably evacuated by holes provided in a plurality of protrusions, so that the base coating can be performed more reliably. it can.

It is preferable that the first flange and the second flange are each formed with two lowering portions that are lowered in the longitudinal direction at a plurality of corresponding portions to which the two first sealer materials are applied.

In this way, since the first sealer material is applied to the lowering portions of the first flange and the second flange, even if the roof panel is deformed up and down during the assembly of the vehicle body structure, the roof panel can be used with the roof panel. It is possible to reduce the possibility that the first sealer material is crushed and extends in the horizontal direction. Further, since the first flange and the second flange are provided with a descending portion that descends in the longitudinal direction, the rigidity can be increased.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the examples are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. To do.

FIG. 1 is a diagram showing a vehicle body structure 100 according to an embodiment of the present invention. FIG. 1A shows a state in which the vehicle 102 to which the vehicle body structure 100 is applied is viewed from diagonally forward. FIG. 1B shows the inside of the vehicle body structure 100. In each of the following figures, the front-rear direction of the vehicle is illustrated by arrows Front and Back, the left and right in the vehicle width direction are illustrated by arrows Left and Right, and the vehicle vertical direction is illustrated by arrows Up and Down, respectively.

The vehicle body structure 100 includes a roof panel 104 shown in FIG. 1 (a). The roof panel 104 is a thin plate-shaped body panel, and has a size that covers the upper part 106 of the passenger compartment of the vehicle 102. The vehicle body structure 100 further includes a frame body 108 shown in FIG. 1 (b) and a plurality of (here, four) cross members 110, 112, 114, and 116 as reinforcing members.

The frame body 108 has a pair of roof rails 118 and 120, a roof front member 122, and a roof end member 124, and these members surround the outer periphery of the roof panel 104. The pair of roof rails 118 and 120 are located on the left and right side ends of the roof panel 104 and extend in the front-rear direction of the vehicle. The roof front member 122 is located on the front end side of the roof panel 104 and extends in the vehicle width direction between the pair of roof rails 118 and 120. The roof end member 124 is located on the rear end side of the roof panel 104 and extends in the vehicle width direction between the pair of roof rails 118 and 120.

The plurality of cross members 110, 112, 114, 116 are located on the vehicle interior 126 side shown in FIG. 1A of the roof panel 104. Further, the cross members 110, 112, 114, 116 are separated from each other in the vehicle front-rear direction at predetermined intervals, and are further spread in the vehicle width direction between the pair of roof rails 118, 120 of the frame body 108.

The vehicle body structure 100 further comprises a plurality of first sealer members 128 as shown by hatching in FIG. 1 (b). The plurality of first sealer materials 128 are sealer materials to which a predetermined damping force is added in addition to an adhesive force, and exhibit a predetermined performance by being cured at the time of heat treatment. The predetermined damping force is, for example, one in which the loss tangent (tan δ) is as high as 0.5 or more at room temperature (20 degrees Celsius) and has a damping effect about twice as much as usual. As shown in FIG. 1B, the plurality of first sealer materials 128 are applied to a plurality of predetermined positions of the plurality of cross members 110, 112, 114, 116, and the plurality of cross members 110, 112, 114, The 116 and the roof panel 104 (see FIG. 3A) are glued together.

In the figure, among the plurality of cross members 110, 112, 114, 116, the first sealer materials 130, 132, 134, 136, 138 applied to a plurality of (six in this case) predetermined locations of the cross members 116. , 140 are typically coded. Further, the first sealer materials 142, 144, 146, 148, 150, 152, 154, and 156, which are applied to a plurality of (8 in this case) predetermined parts of the cross member 114, are also typically coded. ..

FIG. 2 is a diagram showing a main part of the vehicle body structure 100 of FIG. FIG. 3 is a diagram showing an AA cross section and a BB cross section of the vehicle body structure 100 of FIG. 1B.

Here, the thin plate-shaped roof panel 104 easily vibrates, and when a low frequency is formed, it becomes one of the causes of low frequency noise for the occupants in the passenger compartment 126. Of the vibrations of the roof panel 104, the main vibrations that form low frequencies that cause low-frequency noise are centered in the vehicle width direction or the vehicle front-rear direction center of the roof panel 104, and are knotted near the outer edge of the roof panel 104. It is a drum-shaped vibration.

Therefore, in the vehicle body structure 100, the vertical distance between the roof panel 104 and the plurality of cross members 110, 112, 114, 116 is increased as it approaches the center of the roof panel 104 in the vehicle width direction. That is, in the vehicle body structure 100, as typically shown in the AA cross section of FIG. 3A, the vertical distance between the roof panel 104 and the cross member 116 is in the order of the intervals La, Lb, Lc, Ld, and Le. large. Therefore, the closer the roof panel 104 and the plurality of cross members 110, 112, 114, 116 are to the center of the roof panel 104 in the vehicle width direction, the more the distance between the roof panel 104 and the plurality of cross members 110, 112, 114, 116 in the stroke direction, that is, in the vertical direction, which is the same as the drum-shaped vibration of the roof panel 104. Is getting bigger.

Further, according to the vehicle body structure 100, even if the first sealer material 128 applied to the predetermined portion has the same area in the upward view, the distance becomes larger as the roof panel 104 approaches the center in the vehicle width direction. , The volume applied to a predetermined place can be increased. As an example, the volumes of the first sealer materials 130, 132, 134, 136, 138, 140 applied to the six predetermined locations of the cross member 116 are the vehicle widths of the roof panel 104, as shown in FIG. 3A. It gets bigger as it gets closer to the center of the direction. That is, the volume of the first sealer material is larger in the order of 130, 132, 134, 136, 138, 140.

As described above, in the vehicle body structure 100, the roof panel 104 and the plurality of cross members 110, 112, 114, 116 are adhered to each other by the first sealer material 128, and the above-mentioned vertical distance is the center of the roof panel 104 in the vehicle width direction. The closer it gets to, the bigger it gets. Therefore, according to the vehicle body structure 100, the damping force of the plurality of first sealer materials 128 can be sufficiently exerted, and the vibration of the roof panel 104 can be damped more effectively. According to the vehicle body structure 100, among the vibrations of the roof panel 104, the vibration at a predetermined position corresponding to the antinode of the drum-shaped vibration can be more effectively attenuated, and the low frequency with respect to the occupant in the passenger compartment 126 can be attenuated. Noise can be reduced.

Further, as typically shown in the BB cross section of FIG. 3B, the cross member 114 includes a first groove 158 and a second groove 160, a partition wall 162, a first flange 164 and a second flange 166. Has. The first groove 158 and the second groove 160 are recessed portions along the vehicle width direction, which is the longitudinal direction of the cross member 114. The partition wall 162 is located between the first groove 158 and the second groove 160 and partitions the first groove 158 and the second groove 160.

The first flange 164 and the second flange 166 project outward from their upper ends 168 and 170 along the first groove 158 and the second groove 160, respectively. Further, as shown in FIG. 3B, two first sealer materials 146 and 154 are applied to the corresponding portions of the first flange 164 and the second flange 166. Further, two lowering portions 172 and 174 are formed on the first flange 164 and the second flange 166. The two lowering portions 172 and 174 are lowered in the longitudinal direction, that is, in the vehicle width direction at the locations where the two first sealer materials 146 and 154 are applied.

As described above, in the vehicle body structure 100, the first sealer material 128 having a damping force is projected outward from the upper ends 168 and 170 of the first groove 158 and the second groove 160 of the cross member 114, respectively, at the first flange 164 and the first flange. 2 Flange 166 is coated. Therefore, the roof panel 104 can be supported by the first flange 164 and the second flange 166 of the cross member 114 via the first sealer material 128, and the vibration of the roof panel 104 can be further reduced. Further, since the first groove 158 and the second groove 160 are formed over the longitudinal direction of the cross member 114, the vertical rigidity of the cross member 114 can be ensured.

Here, when assembling the vehicle body structure 100, the roof panel 104 may be deformed up and down due to the cleaning water pressure in the step of cleaning the vehicle body skeleton to remove dust. On the other hand, in the vehicle body structure 100, the first sealer material 128 is applied to the lowering portions 172 and 174 of the first flange 164 and the second flange 166. Therefore, in the vehicle body structure 100, even when the roof panel 104 is deformed up and down during assembly, it is possible to reduce the possibility that the first sealer material 124 is crushed and extends in the horizontal direction with the roof panel 104. Further, the rigidity can be increased by providing the lowering portions 172 and 174 on the first flange 164 and the second flange 166.

The cross member 114 further has a plurality of (here, two) protrusions 176 and 178 shown in FIG. The protrusion 176 is formed on the partition wall 162 as shown in FIG. 3B, is located between the two first sealer members 146 and 154, and is longitudinal between the first groove 158 and the second groove 160. It protrudes in the vehicle width direction, which is the direction. Further, the protrusion 178 is coated with a plurality of predetermined second sealer materials 180 for adhering the cross member 114 and the roof panel 104. As shown in FIG. 2, the protrusion 178 is formed on the partition wall 162, is located between the two first sealer members 144 and 152, and has a vehicle width between the first groove 158 and the second groove 160. It protrudes in the direction, and a second sealer material is also applied, although not shown.

As described above, in the vehicle body structure 100, by providing a plurality of protrusions 176 and 178 between the first groove 158 and the second groove 160 of the cross member 114, the roof panel 104 can be vertically deformed by the protrusions 176. The distance between the 178 and the roof panel 104 is regulated. Therefore, it is reduced that the first sealer material 128 is crushed and extends in the horizontal direction between the first flange 164 and the second flange 166 and the roof panel 104, whereby the roof panel 104 and the cross member 114 are adhered to each other. You can do it with certainty.

Further, since the predetermined second sealer material 180 (see FIG. 3B) is applied to the plurality of projecting portions 176 and 178, sufficient adhesion between the roof panel 104 and the cross member 114 can be ensured. The second sealer material 180 does not have to have a damping force equivalent to that of the first sealer material 128 as long as the roof panel 104 and the cross member 114 can be adhered to each other. Therefore, the manufacturing cost can be reduced.

Further, as shown in FIG. 2, holes 182 and 184 for bleeding air are formed in the plurality of protrusions 176 and 178, respectively. Therefore, in the vehicle body structure 100, in the step of immersing the vehicle body in the electrodeposition tank at the time of assembly, air can be reliably evacuated through the holes 182 and 184 provided in the plurality of protrusions 176 and 178. Painting can be performed reliably. Further, the air bleeding holes 182 and 184 are arranged at positions avoiding the second sealer material 180 applied to the protrusions 176 and 178. This makes it possible to prevent the holes 182 and 184 from being blocked by the second sealer material 180.

FIG. 4 is a diagram showing a CC cross section of the vehicle body structure 100 of FIG. 1 (b) and a vehicle body structure 300 of a comparative example. Here, when assembling the vehicle body structure 100, in the step of cleaning the vehicle body skeleton to remove dust, the vehicle body skeleton is cleaned before the applied first sealer material 128 is thermoset. During this cleaning, the thin plate-shaped roof panel 104 is greatly elastically deformed by the water flow. When the elastic deformation of the roof panel 104 is repeated, the first sealer material 128 before thermosetting is stretched and flows between the plurality of cross members 110, 112, 114, 116 and the roof panel 104, and the grounding is achieved. It becomes weak and may not provide sufficient adhesion during thermosetting. Further, if sufficient adhesion cannot be obtained during thermosetting, the thin plate-shaped roof panel 104 tends to vibrate, and if a low frequency is formed, low frequency noise to the occupants in the passenger compartment 126 is generated. It becomes one of the causes.

Therefore, in the vehicle body structure 100, the first sealer material 128 is arranged at an appropriate position in consideration of the shape of the roof panel 104 and the shapes of the plurality of cross members 110, 112, 114, 116 which are reinforcing members. Further, a predetermined third sealer material 186 (see FIG. 4A) is provided.

The third sealer material 186 is filled in a plurality of predetermined positions of the plurality of cross members 110, 112, 114, 116 shown in FIG. 1 (b). Further, the third sealer material 186 does not have to have a damping force equivalent to that of the first sealer material 128 as long as the plurality of cross members 110, 112, 114, 116 and the roof panel 104 can be adhered to each other. As shown in the CC cross section of FIG. 4A, the third cross member 110, 112, 114, 116 is filled in a plurality of (three in this case) predetermined positions of the cross member 114. The sealers 188, 190, and 192 are typically coded.

As shown in FIG. 4A, the roof panel 104 has a plurality of (here, three) recesses 194, 196, 198, and a plurality of (here, two) convex portions 200, 202, and a plurality (here, two). It has four) inclined portions 204, 206, 208, 210. The recesses 194, 196, and 198 are portions that are intermittently recessed along the cross member 114 extending in the vehicle width direction. The convex portions 200 and 202 are portions where the distance to the cross member 114 is longer than that of the plurality of concave portions 194, 196 and 198.

The inclined portions 204 and 210 are inclined portions connecting the concave portions 194 and 198 and the convex portions 200 and 202, respectively. The inclined portions 206 and 208 are inclined portions connecting the concave portion 196 and the convex portions 200 and 202, respectively, and face each other with the concave portion 196 interposed therebetween.

In the following, the positions where the first sealer material 144 and 146 and the third sealer material 190 are arranged will be typically described. The first sealer material 144, 146 and the third sealer material 190 before thermosetting are arranged in a lowering portion 172 provided on the first flange 164 of the cross member 114 (see FIG. 2). At this time, as shown in FIG. 4A, the first sealer material 144 and 146 adheres the lowering portion 172 of the first flange 164 of the cross member 114 and the two inclined portions 206 and 208 of the roof panel 104. Arranged like this. Further, the third sealer material 190 is filled between the two first sealer materials 144 and 146 so as to bond the lowering portion 172 of the first flange 164 of the cross member 114 and the recess 196 of the roof panel 104. Is placed in.

Therefore, in the vehicle body structure 100, even if the roof panel 104 is repeatedly elastically deformed in the vertical direction during assembly, the first sealer material 144 and 146 before thermosetting are provided by the filled third sealer material 190. Flow of the roof panel 104 into the recess 196 is prevented. As a result, the first sealer materials 144 and 146 can maintain their shapes.

Further, since the first sealer material 144, 146 and the third sealer material 190 are all arranged in the lowering portion 172 provided on the first flange 164 of the cross member 114, they flow in the vehicle front-rear direction of the cross member 114. This is also prevented and the shape can be maintained better.

On the other hand, in the vehicle body structure 300 of the comparative example shown in FIG. 4B, the third sealer materials 188, 190 and 192 are not filled. In such a vehicle body structure 300, the first sealer members 142A, 144A, 146A, and 148A cannot maintain their shapes by flowing into the recesses 194, 196, and 198 of the roof panel 104 as shown by the arrows in the drawing. As a result, in the vehicle body structure 300, sufficient adhesion cannot be ensured between the cross member 114 and the inclined portions 204, 206, 208, 210 of the roof panel 104, and the vibration of the roof panel 104 cannot be sufficiently damped. ..

On the other hand, according to the vehicle body structure 100, when the first sealer material 144, 146 and the third sealer material 190 are thermoset, the lowering portion 172 provided on the first flange 164 of the cross member 114 and the roof panel 104 are tilted. Sufficient adhesion can be ensured between the portions 206 and 208 and the recess 196. As a result, the vibration of the roof panel 104 can be attenuated more effectively, and the low frequency noise for the occupant in the passenger compartment 126 can be reduced. The third sealer material 190 filled between the two first sealer materials 144 and 146 does not have to have the same damping force as the first sealer materials 144 and 146, so that the manufacturing cost can be reduced. You can also.

Further, as shown in FIG. 4A, the two first sealer materials 144 and 146 straddle the two lower corner portions 212 and 214. The two lower corner portions 212 and 214 are portions formed by the recess 196 of the roof panel 104 and the two inclined portions 206 and 208. Therefore, in the vehicle body structure 100, the first sealer materials 144 and 146 having a damping force are used as the roof panel at the two lower corner portions 212 and 214 which are the boundaries between the recess 196 of the roof panel 104 and the two inclined portions 206 and 208. Since it supports 104, it becomes easy to exert a damping force.

Further, as shown in FIG. 4A, the two first sealer materials 144 and 146 straddle the two upper corner portions 216 and 218. The two upper corner portions 216 and 218 are portions formed by the convex portions 200 and 202 of the roof panel 104 and the two inclined portions 206 and 208.

Therefore, in the vehicle body structure 100, in addition to the lower corner portions 212 and 214 of the roof panel 104, the upper corner portions 216 and 218 which are the boundaries between the convex portions 200 and 202 and the inclined portions 206 and 208 are formed by the first sealer material 144. 146 can support the roof panel 104. Therefore, in the vehicle body structure 100, the damping force of the first sealer materials 144 and 146 can be more easily exerted.

Further, in the roof panel 104, the lower corner portions 212 and 214 to the upper corner portions 216 and 218 have high rigidity and are greatly deformed by an external load. In the vehicle body structure 100, since the highly rigid portion of the roof panel 104 is supported by the first sealer materials 144 and 146, the cross member 114 and the roof panel 104 can be more firmly bonded to each other.

Further, as shown by the dotted line in FIG. 2, the roof panel 104 is located at a position where the inclined portion 206 overlaps the first sealer material 146, 154 and the protruding portion 176 of the cross member 114 in a top view. Further, the inclined portion 208 of the roof panel 104 is positioned so as to overlap the protruding portions 178 of the first sealer materials 144 and 152 and the cross member 114 in a top view. In this way, the inclined portions 206 and 208 of the roof panel 104 are provided via the plurality of first sealer materials 128 and the second sealer material 180 (see FIG. 3B) applied to the protrusions 176 and 178. It can be reliably adhered to the cross member 114.

Further, as shown in FIG. 2, the lowering portion 172 provided on the first flange 164 of the cross member 114 has a narrow portion 220. This portion 220 is a place where the third sealer material 190 shown in FIG. 4A is arranged, and suppresses the change in the shape of the first sealer material 144 and 146 due to the narrow width, so that the shape can be changed. Can be kept better. Even if the third sealer material 190 is not arranged in this portion 220, the shape change of the first sealer material 144 and 146 can be suppressed due to the narrow width.

In the above embodiment, as shown in FIG. 1B, a plurality of cross members 110, 112, 114, 116 are delivered in the vehicle width direction of the frame body 108, but the present invention is not limited to this, and the vehicle front and rear of the frame body 108 Multiple cross members may be passed in the direction.

In this case, the plurality of cross members project outward from the upper ends of the first groove and the second groove recessed in the longitudinal direction, that is, the vehicle front-rear direction, and the first groove and the second groove, respectively. The first flange and the second flange are formed. Then, two first sealer materials each having a damping force are applied to a plurality of corresponding portions of the first flange and the second flange. In this way, the roof panel 104 can be supported by the first flange and the second flange of the cross member via the first sealer material, and the vibration of the roof panel 104 can be further reduced.

Further, the vertical distance between the roof panel 104 and the cross member is increased as it approaches the center of the roof panel 104 in the vehicle front-rear direction, and the volume of the plurality of first sealers is increased as it approaches the center of the roof panel 104 in the vehicle front-rear direction. Enlarge. As a result, among the vibrations of the roof panel 104, the vibrations at a predetermined portion corresponding to the abdomen can be more effectively attenuated, and the low frequency noise for the occupants in the passenger compartment 126 can be reduced.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

The present invention can be used for a vehicle body structure.

100, 300 ... Body structure, 102 ... Vehicle, 104 ... Roof panel, 106 ... Upper part of cabin, 108 ... Frame, 110, 112, 114, 116 ... Cross member, 118, 120 ... Roof rail, 122 ... Roof front member, 124 ... Roof end member, 126 ... Vehicle interior, 128, 130, 132, 134, 136, 138, 140, 142, 142A, 144, 144A, 146, 146A, 148, 148A, 150, 152, 154, 156 ... 1 Sealer material, 158 ... 1st groove, 160 ... 2nd groove, 162 ... Partition wall, 164 ... 1st flange, 166 ... 2nd flange, 168, 170 ... Upper end, 172, 174 ... Lowering part, 176, 178 ... Protruding part, 180 ... second sealer material, 182, 184 ... hole, 186, 188, 190, 192 ... third sealer material, 194, 196, 198 ... concave part, 200, 202 ... convex part, 204, 206, 208, 210 ... Inclined portion, 212, 214 ... Lower corner portion, 216, 218 ... Upper corner portion, 220 ... Lower corner portion

Claims (4)

In a vehicle body structure with a roof panel covering the upper part of the vehicle interior, the vehicle body structure is further described.
A frame that surrounds the outer circumference of the roof panel and
The frame is provided with a reinforcing member located on the passenger compartment side of the roof panel and extended in the vehicle width direction or the vehicle front-rear direction.
The reinforcing member includes a first groove and a second groove recessed in the longitudinal direction thereof, and a first flange and a second flange extending outward from their upper ends along the first groove and the second groove, respectively. Have and
The body structure is further
A plurality of corresponding portions of the first flange and the second flange of the reinforcing member are coated, and the reinforcing member and the roof panel are adhered to each other to be provided with two first sealer materials having a predetermined damping force.
The vertical distance between the roof panel and the reinforcing member increases as the roof panel approaches the center in the vehicle width direction or the center in the vehicle front-rear direction.
A vehicle body structure characterized in that the volume of the plurality of first sealer materials increases as the roof panel approaches the center in the vehicle width direction or the center in the vehicle front-rear direction. The reinforcing member further has a plurality of protrusions located between the two first sealer members and projecting in the longitudinal direction between the first groove and the second groove.
The vehicle body structure according to claim 1, further comprising a plurality of predetermined second sealer materials that are applied to the plurality of protrusions and adhere the reinforcing member and the roof panel. The vehicle body structure according to claim 2, wherein holes for bleeding air are formed in each of the plurality of protrusions. The first flange and the second flange are formed with two lowering portions each descending in the longitudinal direction at the plurality of corresponding portions to which the two first sealer materials are applied. The vehicle body structure according to any one of claims 1 to 3.

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