JP2008195361A - Roof construction of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively reduce vibrations of a roof panel while minimizing increase of manufacturing costs or a vehicle body weight to a necessary minimum limit. <P>SOLUTION: This roof structure of an automobile comprises reinforcements 18 extending in a vehicle width direction along a bottom face of a roof panel 3, fixed to a pair of right and left roof side rails 1, 1 on both ends, and contacting the roof panel 3 via a damping material 29 on a top face. An enlarged part 25 projecting forward and backward of the vehicle beyond right and left side parts 27, 27 is provided at an intermediate part 23 of the reinforcement 18 in the vehicle width direction, and the damping material 29 is provided at the intermediate part 23 of the reinforcement 18 including the enlarged part 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automobile roof structure having a pair of left and right roof side rails extending in the front-rear direction of a vehicle body, and a roof panel installed so as to cover between the roof side rails.

Conventionally, as shown in Patent Document 1 below, in a roof structure of an automobile in which a pair of left and right roof side rails is covered with a roof panel, both extend in the vehicle width direction between the pair of roof side rails. And a vibration damping material made of urethane cushion material or the like is provided on the upper surface of the roof reinforcement, and the roof reinforcement is connected to the roof reinforcement through the vibration damping material. By supporting the panel, the vibration energy transmitted from the roof side rail or the like to the roof panel is attenuated to reduce the vibration of the roof panel.
JP 2006-36134 A

  By the way, in the configuration as described above, in order to more effectively reduce the vibration of the roof panel, the width of the roof reinforcement is increased as much as possible, and the damping material is arranged in a wider area secured on the upper surface thereof. It is desirable to arrange. However, if the front and rear width of the roof reinforcement is increased unnecessarily, the weight of the vehicle body becomes heavier than necessary and the manufacturing cost increases.

  The present invention has been made in view of the above circumstances, and is a roof structure for an automobile that can effectively reduce the vibration of the roof panel while minimizing the increase in manufacturing cost and vehicle weight. The purpose is to provide.

  In order to solve the above problems, the present invention is a roof structure of an automobile having a pair of left and right roof side rails extending in the front-rear direction of the vehicle body, and a roof panel installed so as to cover between the roof side rails. A roof reinforcement that extends in the vehicle width direction along the lower surface of the roof panel, both ends thereof are fixed to the pair of roof side rails, and the upper surface is in contact with the roof panel via a damping material. The roof reinforcement has an enlarged portion formed at the middle in the vehicle width direction so as to protrude forward or rearward of the vehicle from the left and right side portions, and the roof rain including the enlarged portion. The damping material is provided in an intermediate portion of the force (claim 1).

  According to the present invention, an enlarged portion that protrudes forward or rearward of the vehicle is provided at the intermediate portion of the roof reinforcement, and the intermediate region of the roof panel that is likely to have large amplitude during vibration (that is, from the roof side rail of the lower surface of the roof panel) The vibration energy transmitted to the roof panel is supported by the intermediate portion whose width in the front-and-rear direction is relatively increased by the presence of the enlarged portion via a damping material. Can be effectively damped to effectively reduce the vibration of the roof panel.

  Moreover, by providing the enlarged portion as described above only at the intermediate portion of the roof reinforcement, the front and rear widths of the left and right side portions are suppressed to a relatively small size within a range necessary for reinforcing the roof portion. Therefore, it is possible to effectively suppress an increase in the manufacturing cost and the weight of the vehicle body due to an unnecessarily large front-rear width of the roof reinforcement.

  A front roof header that connects the front end portions of the roof side rail is provided in front of the roof reinforcement, and the roof reinforcement is connected to the upper end of the center pillar of the pair of left and right roof side rails. And a second reinforcement disposed between the first reinforcement and the front roof header, and the enlarged portion. Is preferably provided in the second reinforcement (claim 2).

  As described above, the second reinforcement is disposed between the front roof header located at the front end of the roof portion and the first reinforcement located at the center in the front-rear direction of the roof portion. When the above-mentioned enlarged portion is provided in the reinforcement of the roof, the front portion of the roof panel, which tends to receive larger vibration energy than other parts because it is close to the drive system of the engine or the like, is enlarged. Since it can be supported by the intermediate portion of the second reinforcement whose area is enlarged due to the presence of the portion, there is an advantage that vibration of the roof panel can be reduced more efficiently while suppressing an increase in the weight of the vehicle body and the like. is there.

  In this case, the second reinforcement is disposed at a substantially center position in the front-rear direction between the first reinforcement and the front roof header, and the enlarged portion is more than the left and right side portions. It is preferably formed so as to protrude on both the front and rear sides of the vehicle.

  In this way, a relatively large area can be secured in the middle portion of the second reinforcement without increasing the amount of individual protrusion in the front-rear direction of each enlarged portion so much. Since the roof panel is supported in a well-balanced manner in the front-rear direction by the portion, there is an advantage that the vibration of the roof panel can be effectively reduced while sufficiently securing the support rigidity of each enlarged portion.

  The second reinforcement is disposed at a position offset from the center in the front-rear direction between the first reinforcement and the front roof header to the vehicle rear side, and the enlarged portion is arranged on the left and right sides thereof. It is also preferable that it is formed so as to protrude only toward the front side of the vehicle relative to the portion (claim 4).

  In this way, while supporting the central part of the roof part which is likely to be deformed with emphasis on reinforcement, the support area of the roof panel by the intermediate part of the second roof reinforcement is appropriately secured, and the roof panel There is an advantage that vibration can be effectively reduced.

  In the roof reinforcement, it is preferable that a recessed portion recessed downward is provided at least in an enlarged portion so as to extend in the vehicle width direction.

  In this way, it is possible to easily and effectively improve the bending rigidity of the enlarged portion with respect to the axis extending in the vehicle width direction, and the enlarged portion supports the roof panel with high rigidity, and the vibration is more effective. There is an advantage that it can be reduced.

  The recessed portion is preferably provided in a region excluding at least a side end portion in the vehicle width direction of the enlarged portion.

  In this way, even when the amount of protrusion in the front-rear direction of the enlarged portion is relatively large, there is an advantage that sufficient bending rigidity can be secured with respect to the axis extending in the front-rear direction of the enlarged portion.

  As described above, according to the automobile roof structure of the present invention, it is possible to effectively reduce the vibration of the roof panel while minimizing the increase in manufacturing cost and vehicle weight.

(Embodiment 1)
Hereinafter, a roof structure of an automobile according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view showing a basic skeleton of a vehicle body adopting the above-described roof structure, FIG. 2 is a bottom view of the roof portion of the vehicle body as viewed from below (from the vehicle interior side), and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

  As shown in FIG. 1, a pair of roof side rails 1, 1 extending in the front-rear direction of the vehicle body are installed on the left and right side portions of the roof portion, and an area between the roof side rails 1, 1 is The roof panel 3 is made of a steel plate panel or the like. The front end portion, the rear end portion, and the center portion in the front-rear direction between the roof side rails 1 are connected to the upper end portions of the front pillar 5, the rear pillar 6, and the center pillar 7 extending in the vertical direction. Further, the lower ends of the pillars 5 to 7 are directly or indirectly connected to the side sill 11 constituting the lower side of the vehicle body. In the figure, reference numeral 9 denotes a front side frame, and the front side frame 9 is installed so as to extend in the front-rear direction on the left and right sides of the engine room.

  As shown in FIG. 2, a front roof header 13 and a rear roof header extending between the pair of roof side rails 1 and 1 in the vehicle width direction along the lower surfaces of the front edge portion and the rear edge portion of the roof panel 3. 15 and a roof reinforcement 20 including first to third reinforcements 17 to 19 extending in the vehicle width direction along the lower surface of the roof panel 3 is installed between these two members. ing.

  The front roof header 13, the rear roof header 15, and the first to third reinforcements 17 to 19 are joined to the front and rear direction parts of the roof side rails 1 and 1 by spot welding or the like ( The roof side rails 1 and 1 are connected to each other by being fixed. That is, the front end portions of the roof side rails 1 and 1 are connected to each other by the front roof header 13, and the rear end portions of the roof side rails 1 and 1 are connected to each other by the rear roof header 15. Three places in the front-rear direction of the roof side rails 1, 1 located between 13 and 15 are connected to each other by first to third reinforcements 17 to 19.

  The first reinforcement 17 of the roof reinforcement 20 is disposed near the center in the front-rear direction on the lower surface of the roof panel 3, so that the center pillar 7 of the pair of roof side rails 1, 1 is arranged. It is comprised so that the site | parts to which an upper end is connected may be connected. A second reinforcement 18 is disposed between the first reinforcement 17 and the front roof header 13, and the first reinforcement 17 and the rear roof header 15 are connected to each other. A third reinforcement 19 is disposed therebetween, and the first to third reinforcements 17 to 19 arranged side by side in the front-rear direction effectively cause the roof portion to extend over substantially the entire front-rear direction. It is designed to be reinforced.

  Of the roof reinforcement 20, the first reinforcement 17 located substantially at the center of the roof portion is formed to extend in the vehicle width direction with a uniform large front-rear width. It is comprised as a reinforcement member with the highest intensity | strength. As a result, the center part of the roof part that is most likely to be deformed is sufficiently reinforced because the distance in the front-rear direction from the roof headers 13 and 15 is large, so that, for example, the cabin is more deformed during a side collision of the vehicle. It is designed to be effectively suppressed. That is, even when a large lateral impact load is input to the roof portion through the center pillar 7 or the like at the time of a side collision of the vehicle, the impact load is efficiently transmitted to each part of the vehicle body via the first reinforcement 17 having high rigidity. As a result, the cabin is effectively prevented from being deformed so as to be crushed in the vehicle width direction, and the safety of passengers in the cabin is sufficiently ensured.

  On the other hand, the second and third reinforcements 18 and 19 before and after the first reinforcement 17 are arranged complementarily between the roof headers 13 and 15 and the first reinforcement 17. By providing and reinforcing the area in between, it plays the role of further improving the above-mentioned side collision resistance. However, since the second and third reinforcements 18 and 19 do not require as much reinforcing ability as the first reinforcement 17, the front and rear widths of the reinforcements 18 and 19 are the same as those of the first reinforcement 17 and 19. A value smaller than the reinforcement 17 is set.

  Among such second and third reinforcements 18 and 19, the second reinforcement 18 located on the front side has a front-rear width of the intermediate portion 23 in the vehicle width direction, and the left and right side portions. 27, 27 so as to be larger than 27. That is, the second reinforcement 18 has a pair of front and rear enlarged portions 25 formed at the intermediate portion 23 in the vehicle width direction so as to protrude forward and rearward of the vehicle from the left and right side portions 27 and 27. 25, and the width of the intermediate portion 23 is formed to be larger than the left and right side portions 27, 27 by the enlarged portion 25.

  The second reinforcement 18 is disposed at a substantially central position in the front-rear direction between the first reinforcement 17 and the front roof header 13. Specifically, the second reinforcement 18 is arranged such that a center line A extending in the vehicle width direction is located at substantially equal intervals from the first reinforcement 17 and the front roof header 13. It is installed.

  As shown in FIGS. 2 and 3, the roof headers 13 and 15 and the reinforcements 17 to 19 have a plurality of elastic bodies such as urethane and synthetic rubber or a plurality of elastic adhesives on the upper surfaces thereof. The vibration damping material 29 is provided, and the front and rear direction parts of the roof panel 3 are supported by the roof headers 13 and 15 and the reinforcements 17 to 19 through the vibration damping material 29. In FIG. 3, the rear end portion of the roof portion where the rear roof header 15 is installed is omitted, but the structure is the same as the installation portion of the front roof header 13 on the opposite side. In FIG. 3, reference numeral 30 denotes a windshield.

  The vibration damping material 29 is fixed to the upper surfaces of the roof headers 13 and 15 and the reinforcements 17 to 19 in a state of contacting the lower surface of the roof panel 3. The vibration damping material 29 configured in this way plays a role of reducing vibration transmitted to the roof panel 3. That is, the roof panel 3 receives vibrations generated in a drive system such as an engine and a mission, and various vibrations input from a suspension or the like during traveling. This is transmitted from the members such as pillars 5 to 7 through the left and right roof side rails 1, but each portion of the roof panel 3 is supported via the damping material 29 made of an elastic body or the like. The vibration energy transmitted to 3 is efficiently absorbed and attenuated by the damping material 29.

  The vibration damping material 29 is installed on the top surfaces of the roof headers 13 and 15 and the reinforcements 17 to 19 so as to be arranged at substantially equal intervals in the vehicle width direction. Of these, focusing on the damping material 29 provided on the upper surface of the second reinforcement 18, most of the damping material 29 on the reinforcement 18 is an intermediate portion including the enlarged portion 25. 23 is provided on the upper surface. Specifically, on the upper surface of the intermediate portion 23, the vibration damping material 29 includes an end edge portion of the front and rear enlarged portions 25, 25, and two places therebetween (near the base end portion of each enlarged portion 25). It is installed so as to line up in the vehicle width direction at four locations in the front-rear direction.

  As shown in FIGS. 2 to 4, the second reinforcement 18 is provided with a recessed portion 31 recessed downward along a center line A extending in the vehicle width direction. In addition, recessed portions 33 that extend in the vehicle width direction are also provided in the enlarged portions 25 and 25 before and after the second reinforcement 18. Then, due to the presence of these recessed portions 31 and 33, the section modulus related to the axis extending in the vehicle width direction of the second reinforcement 18 (that is, the section coefficient of the section orthogonal to the vehicle width direction shown in FIGS. 3 and 4). To increase the bending rigidity of the reinforcement 18 in the vehicle width direction, that is, the rigidity against a load or the like that displaces the intermediate portion 23 in the vehicle width direction in the vertical direction with respect to the left and right side portions 27. It has become. In particular, the middle portion 23 of the second reinforcement 18 has a wider front-rear width than the left and right side portions 27 and three recessed portions 33, 31, 33 extending in the vehicle width direction. Therefore, the rigidity is high. Further, the four portions between the concave portions 33, 31, and 33 and the front and rear portions protrude relatively upward, and the vibration damping material 29 is provided on the upper surface of the protruding portion.

  On the other hand, the first and third reinforcements 17 and 19 are also provided with one or a plurality of recessed portions 35 and 37 extending in the vehicle width direction, respectively, and projecting upward in front of and behind the recessed portions 35 and 37. The damping material 29 is provided at each of the locations (front and rear edges of the reinforcements 17 and 19).

  In the roof structure of an automobile having the pair of left and right roof side rails 1 extending in the front-rear direction of the vehicle body and the roof panel 3 installed so as to cover the space between the pair of roof side rails 1 as described above. The roof reinforcement 20 includes first to third reinforcements 17 to 19 that extend in the vehicle width direction along the lower surface of the roof panel 3 and whose upper surface contacts the roof panel 3 via the vibration damping material 29. And an enlarged portion 25 formed so as to protrude forward and rearward from the left and right side portions 27 and 27 at the intermediate portion 23 in the vehicle width direction of the second reinforcement 18 among them. According to the configuration of the first embodiment, the damping material 29 is provided in the intermediate portion 23 of the reinforcement 18 including the enlarged portion 25. While keeping to a minimum increase in manufacturing cost and body weight, can be advantageously effectively reduce the vibration of the roof panel 3.

  That is, by providing the enlarged portion 25 as described above to relatively increase the front-rear width of the intermediate portion 23 of the second reinforcement 18, and providing the vibration damping material 29 on the upper surface of the intermediate portion 23, vibration The intermediate portion of the reinforcement 18 in which the intermediate region of the roof panel 3 whose amplitude at the time is likely to be large (that is, the region of the lower surface of the roof panel 3 that is separated from the roof side rail 1 in the vehicle width direction) has a relatively large area. 23, the vibration energy transmitted to the roof panel 3 can be efficiently attenuated, and the vibration of the roof panel 3 can be effectively reduced.

  In addition, since the enlarged portion 25 as described above is provided only in the intermediate portion 23 of the reinforcement 18, the front and rear widths of the left and right side portions 27 are relatively small within a range necessary for reinforcing the roof portion. Therefore, it is possible to effectively suppress an increase in manufacturing cost and weight of the vehicle body due to an unnecessarily large front-rear width of the reinforcement 18.

  In particular, as in the first embodiment, the second rain is formed between the front roof header 13 located at the front end of the roof portion and the first reinforcement 17 located in the front-rear direction center of the roof portion. When a force 18 is provided and the enlarged portion 25 is provided in the second reinforcement 18, a larger vibration energy is input compared to other parts because it is close to a drive system such as an engine. Since the front portion of the roof panel 3 that tends to be supported by the intermediate portion 23 having a large area including the enlarged portion 25 can be supported, the roof panel 3 can be more efficiently controlled while suppressing an increase in vehicle body weight and the like. There is an advantage that vibration can be reduced.

  Further, as in the first embodiment, the second reinforcement 18 is disposed at the center position in the front-rear direction between the first reinforcement 17 and the front roof header 13. In the case where the enlarged portions 25, 25 are provided so as to protrude to both the front and rear sides of the left and right side portions 27, the amount of individual protrusion in the front-rear direction of the enlarged portions 25, 25 is made so large. Even if not, a relatively large area is secured in the intermediate portion 23 of the second reinforcement 18, and the roof panel 3 is supported in a balanced manner in the front-rear direction by the large-area intermediate portion 23. There is an advantage that the vibration of the roof panel 3 can be effectively reduced while sufficiently securing the support rigidity of the enlarged portions 25 and 25.

  Moreover, in the said 1st Embodiment, by installing the recessed part (31, 35, etc.) recessed in the downward direction in the 1st-3rd reinforcement 17-19 in the state extended in a vehicle width direction. Since the section modulus of the reinforcements 17 to 19 with respect to the axis extending in the vehicle width direction is increased, the bending rigidity of each of the reinforcements 17 to 19 in the vehicle width direction, that is, the intermediate portion 23 in the vehicle width direction is increased. There is an advantage that the roof portion can be more efficiently reinforced by effectively improving the rigidity against a load or the like that is displaced in the vertical direction with respect to the left and right side portions 27.

  In particular, in the first embodiment, since the recessed portion 33 is also provided in the enlarged portion 25 of the second reinforcement 18, the rigidity of the intermediate portion 23 of the reinforcement 18 that supports the intermediate region of the roof panel 3 is increased. There is an advantage that the vibration of the roof panel 3 can be further reduced by improving it more effectively.

(Embodiment 2)
5 to 8 show a second embodiment of the present invention. FIG. 5 is a bottom view of the roof portion as viewed from below (from the vehicle interior side), and FIG. 6 is a line VI-VI in FIG. 7 is a sectional view taken along line VII-VII in FIG. 5, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. In these drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 5, in the roof structure of an automobile according to the second embodiment, among the reinforcing roof reinforcements 20 provided between the pair of left and right roof side rails 1, the second reinforcement 18 is provided. The front roof header 13 and the first reinforcement 17 are disposed at a position offset to the rear side by a predetermined distance from the center in the front-rear direction. That is, the second reinforcement 18 is such that the center line B extending in the vehicle width direction (the center line B of the portion excluding the enlarged portion 45) is located closer to the first reinforcement 17 in the front-rear direction. It is arranged.

  The intermediate portion 43 in the vehicle width direction of the second reinforcement 18 is provided with an enlarged portion 45 that protrudes forward from the left and right side portions 47, 47. That is, the second reinforcement 18 in the second embodiment is different from the case of the first embodiment (that is, the configuration in which the enlarged portions 25, 25 are provided on both front and rear sides of the second reinforcement 18). The enlarged portion 45 is provided only on the vehicle front side. In the second embodiment, the enlarged portion is provided so that the intermediate portion 43 of the second reinforcement 18 has substantially the same area as the intermediate portion 23 of the first embodiment. The forward protrusion amount of 45 is set to be slightly larger than the protrusion amounts of the enlarged portions 25 and 25 in the first embodiment.

  As shown in FIGS. 5 to 7, on the upper surface of the second reinforcement 18, as in the first embodiment, a damping material 29 for suppressing vibration of the roof panel 3 is provided in the vehicle width. They are installed so that they are lined up at approximately equal intervals in the direction. Most of the damping material 29 on the reinforcement 18 is provided on the upper surface of the intermediate portion 43 including the enlarged portion 45. Specifically, on the upper surface of the intermediate portion 43, the damping material 29 includes a front end portion and a base end portion of the enlarged portion 45, and an end portion opposite to the enlarged portion 45 (rear end portion of the intermediate portion 43). Are arranged so as to be lined up in the vehicle width direction at three locations in the front-rear direction.

  Further, in the second reinforcement 18, two recessed portions 51, 51 recessed downward are extended in the vehicle width direction across the left and right side portions 47 and the intermediate portion 43 therebetween. The recessed portion 53 that extends in the vehicle width direction is also installed in the enlarged portion 45 of the second reinforcement 18. And the said damping material 29 is suitably provided in the location formed so that it may protrude relatively upwards between these recessed parts 51,51,53, and its front and back.

  As shown in FIGS. 5 and 8, the recessed portion 53 of the enlarged portion 45 is formed in a region excluding both ends of the enlarged portion 45 in the vehicle width direction. That is, both end portions in the vehicle width direction of the enlarged portion 45 are flange portions 55 connected at the same height as the front edge portion and the rear edge portion of the recessed portion 53 (one step higher portion where the damping material 29 is provided), The recessed portion 53 is formed in a predetermined range in the vehicle width direction excluding the flange portion 55.

  As described above, in the second embodiment, the second reinforcement 18 is disposed at a position offset from the center in the front-rear direction between the front roof header 13 and the first reinforcement 17 to the vehicle rear side. As a result, the second reinforcement 18 is positioned closer to the center of the roof portion, so that the distance from the front roof header 13 is large, so that the roof portion that is most susceptible to deformation is formed. The center portion can be reinforced with emphasis and the rigidity of the roof portion can be improved more effectively.

  Moreover, in this case, since the enlarged portion 45 is provided in the intermediate portion 43 of the second reinforcement 18 so as to protrude only to the front side of the vehicle from the left and right side portions 47, as described above. While the front and rear positions of the second reinforcement 18 are offset to enhance the reinforcing effect of the roof portion, the support region of the roof panel 3 by the intermediate portion 43 is defined as the front roof header 13 and the first reinforcement 17. There is an advantage that the vibration of the front portion of the roof panel 3 supported by the intermediate portion 43 can be effectively reduced.

  Moreover, in the said 2nd Embodiment, by providing the recessed part 53 in the area | region except the vehicle width direction both ends (flange part 55) of the expansion part 45, the section coefficient regarding the axis line extended in the front-back direction of the said expansion part 45 ( That is, since the section modulus of the cross section perpendicular to the longitudinal direction of the vehicle body as shown in FIG. 8 is increased, the bending rigidity in the longitudinal direction of the enlarged portion 45 can be effectively improved. That is, by increasing the section modulus of the enlarged portion 45 as described above, even when a load in the vertical direction as indicated by the arrow C in FIG. Thus, it is possible to easily and effectively suppress the enlarged portion 45 from being deformed so as to be largely bent with its base end portion as a fulcrum.

  Such a configuration is particularly effective when the amount of protrusion of the enlarged portion 45 is relatively large as in the second embodiment. That is, when the protruding amount of the enlarged portion 45 is large, the above-described deformation of the enlarged portion 45 is likely to occur. However, the configuration in which the section coefficient of the enlarged portion 45 is increased by restricting the installation range of the recessed portion 53. According to this, even if the protruding amount of the enlarged portion 45 is large, its rigidity is sufficiently ensured. Therefore, the enlarged portion 45 has an advantage that the roof panel 3 is supported with high rigidity and the vibration can be effectively reduced. is there.

  The first and second embodiments described above are examples of the embodiment of the present invention, and the specific configuration thereof can be changed as appropriate without departing from the spirit of the present invention. For example, in each of the above embodiments, the enlarged portion 25 (45) is provided only in the intermediate portion 23 (43) of the second reinforcement 18, but the same enlarged portion is replaced with other reinforcements (17 and 19). It is also possible to provide it.

It is a figure for demonstrating 1st Embodiment of the roof structure of the motor vehicle concerning this invention, and is a perspective view which shows the basic skeleton of the vehicle body by which the said roof structure was employ | adopted. It is the bottom view which looked at the roof part in the 1st embodiment from the vehicle interior side. It is sectional drawing along the III-III line of FIG. It is sectional drawing along the IV-IV line of FIG. It is a figure for demonstrating 2nd Embodiment of the roof structure of the motor vehicle concerning this invention, and is the bottom view which looked at the roof part from the vehicle interior side. It is sectional drawing along the VI-VI line of FIG. It is sectional drawing along the VII-VII line of FIG. It is sectional drawing along the VIII-VIII line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roof side rail 3 Roof panel 7 Center pillar 13 Front roof header 17 1st reinforcement 18 2nd reinforcement 20 Roof reinforcement 23,43 Middle part 25,45 Enlarged part 27,47 Side part 33 , 53 Recessed part

Claims (6)

A roof structure of an automobile having a pair of left and right roof side rails extending in the front-rear direction of the vehicle body and a roof panel installed so as to cover between the roof side rails,
A roof reinforcement that extends in the vehicle width direction along the lower surface of the roof panel, both ends thereof are fixed to the pair of roof side rails, and the upper surface is in contact with the roof panel via a damping material. ,
The roof reinforcement includes an enlarged portion formed at a middle portion in the vehicle width direction so as to protrude forward or backward of the vehicle from the left and right side portions, and the roof reinforcement including the enlarged portion. A roof structure for an automobile, wherein the vibration damping material is provided in an intermediate part of the vehicle. The automobile roof structure according to claim 1,
In front of the roof reinforcement, a front roof header for connecting the front end portions of the roof side rail is provided,
The roof reinforcement includes a first reinforcement for connecting the upper ends of the center pillars of the pair of left and right roof side rails to each other, and the first reinforcement and the front roof header. A second reinforcement disposed between and
The automobile roof structure, wherein the enlarged portion is provided in the second reinforcement. The roof structure of an automobile according to claim 2,
The second reinforcement is disposed at a substantially central position in the front-rear direction between the first reinforcement and the front roof header, and the enlarged portion is located on the front side of the vehicle from the left and right side portions. A roof structure for an automobile, wherein the roof structure is formed so as to protrude on both sides of the rear. The roof structure of an automobile according to claim 2,
The second reinforcement is disposed at a position offset from the center in the front-rear direction between the first reinforcement and the front roof header to the vehicle rear side, and the enlarged portion is arranged on the left and right sides thereof. A roof structure for an automobile, characterized in that the roof structure protrudes only toward the front side of the vehicle with respect to the portion. In the roof structure of the automobile according to any one of claims 1 to 4,
A roof structure for an automobile, wherein a recessed portion recessed downward is installed in at least the enlarged portion of the roof reinforcement so as to extend in a vehicle width direction. The roof structure of an automobile according to claim 5,
A roof structure for an automobile, wherein the recessed portion is provided in a region excluding at least a side end portion in the vehicle width direction of the enlarged portion.

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