JP2020142632A - Vehicle roof structure - Google Patents

Abstract

To provide a vehicle roof structure which can maintain side collision performance of a vehicle without providing a roof reinforcement.SOLUTION: A vehicle roof structure includes: a roof panel 7 which covers an opening 6 formed by a pair of roof side rails 3, a front header 4, and a rear header 5; and an annular frame 8 which is joined to a peripheral edge of the roof panel 7 and supports the roof panel 7. The annular frame 8 has rigidity higher than the roof panel 7 and is coupled to the pair of roof side rails 3, the front header 4, and the rear header 5. The roof panel 7 comprises: an outer panel 71 fixed to an upper surface of the annular frame 8; and an inner panel 72 fixed to a lower surface of the annular frame 8.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle roof structure.

Conventionally, in order to withstand a large load on the roof when another vehicle collides with the side of the vehicle (that is, a side collision), a roof rain bridged between a pair of roof side rails is provided as a roof reinforcing material. Has been done.

In recent years, there has been a demand for a roof structure reinforced by means other than roof rain due to various demands such as making the roof panel transparent and improving the design of the roof by eliminating the roof rain. Therefore, as a structure without roof rain, for example, a roof structure described in Patent Document 1 has been proposed.

As shown in FIGS. 5 to 6, the roof structure described in Patent Document 1 includes a hollow frame-shaped frame 51 on the outer periphery of the roof of the vehicle body. The hollow frame-shaped frame 51 is a frame body having a hollow rectangular cross section, and is mounted on the upper ends of the front header 52, the rear header 53, and the pair of roof side rails 54 at the upper end of the vehicle body. It is welded to 54 mag. The hollow frame-shaped frame 51 reinforces the roof instead of the roof rain.

Utility Model Registration No. 3194846

However, in the vehicle roof structure of Patent Document 1, since the hollow frame-shaped frame 51 is welded vertically to the roof side rail 54, it is hollow when a large load is applied to the roof side rail 54 at the time of a vehicle side collision. A large shearing force acts on the welded portion with the frame-shaped frame 51 to destroy the welded portion, and the load may not be transmitted to the hollow frame-shaped frame 51. In this case, it becomes difficult to maintain the lateral collision performance of the vehicle.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle roof structure capable of maintaining the side collision performance of a vehicle without providing a roof rain.

In order to solve the above problems, the vehicle roof structure of the present invention is a roof structure constituting the vehicle roof, which is arranged apart from each other in the width direction of the vehicle body, and the skeletons of the side portions of the roof are respectively arranged. The pair of roof side rails, the front header and the rear header, which are arranged apart from each other in the front-rear direction of the vehicle body and form the skeletons of the front end portion and the rear end portion of the roof, and the pair of roof side rails. A roof panel covering the front header and the opening formed by the rear header, and an annular frame joined to the periphery of the roof panel to support the roof panel are provided, and the annular frame is higher than the roof panel. It has rigidity and is coupled to the pair of roof side rails, the front header, and the rear header, and the roof panel is fixed to the outer panel fixed to the upper surface of the annular frame and the lower surface of the annular frame. It is characterized by being composed of an inner panel.

In such a configuration, the roof panel is a double panel composed of an outer panel and an inner panel, and is fixed to both sides of the annular frame in the vertical direction, which has higher rigidity than the roof panel, so that the annular frame is twisted. As well as being less likely to be deformed, these outer panels and inner panels are less likely to bend. Therefore, the in-plane force (that is, the force acting in the in-plane direction of the panel) is efficiently transmitted from the annular frame to both the outer panel and the inner panel, and it becomes possible to efficiently receive the load of other collisions including the side collision. , It is possible to improve the side collision performance of the vehicle. Therefore, it is possible to maintain the side collision performance of the vehicle without providing a bridged roof rain between the pair of roof side rails.

In the roof structure of the vehicle, the annular frame has a panel joint extending along the peripheral surface of the roof panel and joined to the peripheral edge, and a vertical plate extending from the panel joint in the vertical direction of the vehicle body. It is preferable to have a cross-sectional shape including a portion.

With this configuration, the annular frame has a cross-sectional shape including a panel joint extending along the peripheral surface of the roof panel and a vertical plate portion extending in the vertical direction, so that the annular frame has an annular shape that is resistant to twisting and bending. You get a frame.

In the roof structure of the vehicle, the annular frame preferably has a hollow closed cross-sectional shape formed by the pair of the panel joints and the pair of vertical plates.

With such a configuration, the rigidity of the annular frame can be further increased, and the weight of the annular frame can be reduced.

In the roof structure of the vehicle, the annular frame is preferably formed of a fiber reinforced resin.

Since the annular frame is made of fiber reinforced resin, it is lighter and has higher rigidity than a steel frame.

In the roof structure of the vehicle, it is preferred that the annular frame is located inside the opening and is coupled to the pair of roof side rails, the front header and the rear header.

In such a configuration, the annular rail is coupled to the pair of roof side rails, front header and rear header while being disposed inside the opening formed by the pair of roof side rails, front header and rear header. As a result, the load received by the roof side rail at the time of a vehicle side collision can be reliably transmitted to the annular frame inside the opening, and the load can be withstood by the highly rigid annular frame and roof panel. Therefore, it is possible to reliably maintain the side collision performance of the vehicle.

In the roof structure of the vehicle, it is preferable that the roof side rail has a flange portion protruding inside the opening, and the annular frame includes a fastening portion to be fastened to the flange portion.

With such a configuration, the load applied to the roof side rail at the time of a vehicle side collision can be reliably transmitted to the annular frame via the flange portion and the fastening portion.

In the roof structure of the vehicle, the upper end of the annular frame is located at substantially the same height as the upper end of the roof side rail, and the lower end of the annular frame is located below the flange portion. Is preferable.

With this configuration, in a configuration in which the fastening portion of the annular frame is fastened to the flange portion on the roof side rail side, the upper end of the annular frame is located at substantially the same height as the upper end of the roof side rail, and the lower end of the annular frame is flanged. By arranging the annular frame so as to be located below the portion, it is possible to secure the height of the annular frame and improve the rigidity of the annular frame.

In the roof structure of the vehicle, it is preferable that a connecting member for connecting the roof side rail and the annular frame is further provided at a position below the flange portion.

With such a configuration, the roof side rail is connected to the annular frame by both the flange portion and the connecting member. As a result, the load received by the roof side rail at the time of vehicle side collision can be efficiently transmitted to both the outer panel and the inner panel of the annular frame and the roof panel via the two routes of the flange portion and the connecting member. ..

In the roof structure of the vehicle, the roof panel has a fastening portion that extends to the fastening portion and is fastened to the fastening portion, and the side edge portion and the fastening portion are the flange portion of the roof side rail. It is preferable to be fastened to.

With this configuration, both the side edge portion of the roof panel and the fastening portion of the annular frame are fastened to the flange portion of the roof side rail, so that the load received by the roof side rail in the event of a vehicle collision is passed through the main body portion of the annular frame. It is possible to transmit the load directly to the roof side rail without using it, and it is possible to reliably distribute and receive the load to both the annular frame and the roof panel.

In the roof structure of the vehicle, the outer panel and the entire upper surface of the annular frame and the inner panel and the entire lower surface of the annular frame are fastened with an adhesive. preferable.

With such a configuration, by adhering both the outer panel and the inner panel to the entire upper surface and the lower surface of the annular frame, the load can be transmitted from the entire upper surface and the lower surface of the annular frame to the outer panel and the inner panel. As a result, it becomes possible to efficiently receive the load on the entire annular frame, outer panel, and inner panel, and the rigidity of the vehicle body is improved.

In the roof structure of the vehicle, the roof panel preferably has translucency.

With this configuration, in this configuration, there is no roof rain that bridges between the pair of roof side rails, so that the degree of freedom of light transmission is increased.

According to the roof structure of the vehicle of the present invention, the side collision performance of the vehicle can be maintained without providing the roof rain.

It is an exploded perspective view of the roof structure of the vehicle which concerns on embodiment of this invention. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a sectional view taken along line III-III of FIG. It is an exploded perspective view which shows the structure of the reinforcing fiber sheet which comprises the annular sheet part of FIGS. It is a perspective view which shows the roof structure of the conventional vehicle. FIG. 5 is a cross-sectional view showing a state in which the hollow frame-shaped frame of FIG. 5 is welded to the upper surface of the roof side rail.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the vehicle roof structure according to the present embodiment is a structure constituting the vehicle roof 2, and is a pair of roof side rails 3 arranged apart from each other in the width direction Y of the vehicle body 1. A front header 4 and a rear header 5 arranged apart from each other in the front-rear direction X of the vehicle body 1 and a panel unit 30 are provided. The pair of roof side rails 3, the front header 4, and the rear header 5 form a rectangular opening 6 of the roof 2, and the opening 6 is closed by the panel unit 30.

The pair of roof side rails 3 are arranged apart from each other in the width direction Y of the vehicle body 1, and extend in the front-rear direction X of the vehicle body 1 so as to form the skeletons of the side portions of the roof 2. Each of the roof side rails 3 on both sides has a flange portion 15 (see FIG. 2) protruding inward of the opening 6.

The front header 4 and the rear header 5 are arranged apart from each other in the front-rear direction X of the vehicle body 1, and extend in the width direction Y of the vehicle body 1 so as to form the skeletons of the front end portion and the rear end portion of the roof 2, respectively. Each of the front header 4 and the rear header 5 also has a flange portion 15 (see FIG. 3) protruding inward of the opening 6.

The panel unit 30 includes a roof panel 7 and an annular frame 8.

The roof panel 7 has a configuration capable of covering the opening 6 formed by the pair of roof side rails 3, the front header 4, and the rear header 5.

Specifically, in the roof panel 7 of the present embodiment, the outer panel 71 exposed to the outside of the vehicle body 1 and the inner panel 72 located inside the vehicle body 1 are separated from each other in the vertical direction Z with the annular frame 8 interposed therebetween. It is composed of double panels arranged.

In the present embodiment, a double panel having an outer panel 71 and an inner panel 72 has been described as an example of the roof panel 7, but the present invention is not limited to this, and one roof panel is used. , The outer panel 71 may be the only one.

The outer panel 71 and the inner panel 72 constituting the roof panel 7 are transparent or translucent synthetic resin materials having high rigidity (specifically, high bending rigidity and torsional rigidity, etc.), for example, transparent reinforced with glass fiber. It is made of transparent FRP made of synthetic resin, etc., and has translucency. Further, the outer panel 71 and the inner panel 72 may be covered with films for dimming and heat shielding, respectively, on the inner surface facing the inside of the vehicle body 1. Further, the inner panel 72 may be subjected to a special treatment such that a desired color or pattern emerges due to the transmitted light.

As shown in FIGS. 1 to 3, the annular frame 8 has a structure that can be joined to the peripheral edge of the roof panel 7 to support the roof panel 7.

The annular frame 8 is made of a material having higher rigidity than the roof panel 7 (specifically, high flexural rigidity and torsional rigidity, etc.) (for example, a fiber reinforced resin such as a synthetic resin (CFRP) reinforced with carbon fiber). It is a manufactured annular frame (specifically, a frame having a substantially rectangular shape as shown in FIG. 1).

The annular frame 8 is arranged inside the opening 6 of the vehicle body 1 of FIG. As shown in FIGS. 2 to 3, the annular frame 8 is adjacent to the pair of roof side rails 3 in the width direction Y via the fastening portion 13 and the flange portion 15 such as the roof side rail 3 on the mating side, which will be described later. It is connected to the front header 4 and the rear header 5 adjacent to each other in the front-rear direction X.

As shown in FIGS. 2 to 3, the annular frame 8 specifically includes a main body portion 9 and a fastening portion 13 integrally coupled to the main body portion 9.

The main body 9 extends inward toward the inside of the opening 6 of the roof 2 (that is, in the width direction Y or the front-rear direction X), and extends along the peripheral surfaces of the outer panel 71 and the inner panel 72 of the roof panel 7. It has a hollow closed cross-sectional shape formed by a pair of upper and lower panel joints 10 joined to each peripheral edge and a pair of vertical plate portions 11 extending from the panel joint 10 in the vertical direction Z of the vehicle body 1.

The outer panel 71 is fixed to the panel joint 10 forming the upper surface of the annular frame 8, and the inner panel 72 is fixed to the panel joint 10 forming the lower surface of the annular frame 8.

Specifically, the pair of panel joints 10 of the main body 9 of the annular frame 8 are arranged apart from each other in the vertical direction Z, and are firmly adhered to the outer panel 71 and the inner panel 72 by the high-rigidity adhesive 26. ..

The fastening portion 13 projects from the outer peripheral surface of the main body portion 9 toward the flange portion 15. The fastening portion 13 is fastened to each of the pair of roof side rails 3, the front header 4, and the rear header 5 via the flange portion 15 projecting inward of the opening 6. The fastening portion 13 is adhered to the upper surface of each flange portion 15 extending from the roof side rail 3 or the like with a high-rigidity adhesive 26 similar to the above.

In the present embodiment, as shown in FIG. 2, the upper end 16 of the annular frame 8 is located at substantially the same height as the upper end 3a of the roof side rail 3. Further, the lower end 17 of the annular frame 8 is located below the flange portion 15. As a result, the annular frame 8 can secure the height and the rigidity of the annular frame 8.

Further, in the present embodiment, the side edge portion 71a of the outer panel 71 of the roof panel 7 extends to the fastening portion 13 and is overlapped and fastened on the upper surface of the fastening portion 13, and the side edge portion 71a and the fastening portion 13 are roofed. It is overlapped and fastened on the upper surface of the flange portion 15 of the side rail 3. The side edge portion 71a and the fastening portion 13 and the fastening portion 13 and the flange portion 15 are respectively bonded by the above-mentioned high-rigidity adhesive 26. As a result, the load received by the roof side rail 3 at the time of a vehicle collision can be transmitted to the annular frame 8 and the roof panel 7 (specifically, the outer panel 71) via the flange portion 15.

Further, the side edge portion 71a, the fastening portion 13, and the fastening portion 13 may be collectively fastened with bolts, rivets, or the like in combination with the above-mentioned bonding with the high-rigidity adhesive 26.

Further, in the present embodiment, as shown in FIG. 2, the outer panel 71 of the roof panel 7 is joined to the panel joint 10 of the main body 9 of the annular frame 8 and the side edge portion 71a of the outer panel 71. A space 20 having a closed cross section is formed by the roof panel 7 and the annular frame 8 between the portion 19 and the portion 19 which is fastened to the fastening portion 13. By forming a portion surrounding the space 20 having a closed cross section by the outer panel 71 and the annular frame 8, it is possible to reinforce the periphery of the fastening portion 13.

The space 20 having a closed cross section may be formed by the inner panel 72 and the annular frame 8.

Further, in the present embodiment, either the portion below the flange portion 15 of the roof side rail 3 shown in FIGS. 1 to 2 or the portion of the B pillar 21 connected below the roof side rail 3 is As shown in FIG. 2, a connecting member called a gusset 22 is connected to the inside of the vehicle body 1 by welding or the like. In FIG. 2, the gusset 22 is connected to the B-pillar 21 and indirectly connected to the roof side rail 3 via the B-pillar 21. The upper end of the gusset 22 is mechanically coupled by bolts 23 together with the inner panel 72 of the annular frame 8 and roof panel 7. In this structure, the roof side rail 3 is connected to the annular frame 8 by both the flange portion 15 and the gusset 22. As a result, the load received by the roof side rail 3 and the B pillar 21 at the time of a vehicle side collision is applied to both the inner panel 72 of the outer panel 71 of the annular frame 8 and the roof panel 7 via the two routes of the flange portion 15 and the gusset 22. It is possible to efficiently transmit to.

As the nut screwed into the bolt 23, a caulking nut or the like that is caulked and fixed to the annular frame 8 or the like may be used.

As shown in FIG. 3, the flange portion 15 of the front header 4 and the fastening portion 13 of the annular frame 8 are mechanically fastened by using bolts 25. As the bolt 25, for example, a caulking bolt or the like that is crimped and fixed to the fastening portion 13 may be used. The bolt 25 penetrates the flange portion 15 and projects downward. A nut is fastened to the bolt 25 from below the flange portion 15.

Further, as shown in FIG. 3, the front end (left side in FIG. 3) of the outer panel 71 extends above the front header 4 and is adhered to the upper surface of the front header 4 by the adhesive 27. As the adhesive 27, a normal adhesive that exhibits a sealing property that can prevent rainwater or the like from entering from the outside may be used in the gap between the outer panel 71 and the front header 4.

In the present embodiment, the main body 9 of the annular frame 8 has a hollow closed cross-sectional shape, for example, a hollow rectangular cross-sectional shape as shown in FIGS. 2 to 4.

The main body 9 having a hollow closed cross-sectional shape is made of a material containing a synthetic resin such as CFRP. The main body 9 includes an annular sheet portion 12 made of an annularly bent fiber reinforced resin sheet.

The annular sheet portion 12 is formed by bending the laminated sheet 40 shown in FIG. 5 in an annular shape.

The laminated sheet 40 is an embodiment of the fiber-reinforced resin sheet of the present invention, and is composed of a laminated body of a single-layer sheet 41 made of CFRP or the like.

As shown in FIG. 5, each single-layer sheet 41 constituting the laminated sheet 40 is made of CFRP, and a plurality of reinforcing fibers (carbon fibers in CFRP) 42 made of long fibers extending in parallel with each other are made of synthetic resin 43. It is manufactured by being impregnated with and covered with the synthetic resin 43.

The laminated sheet 40 is configured by laminating a plurality of single-layer sheets 41 by changing the orientation of the single-layer sheets 41 so that the reinforcing fibers 42 of each single-layer sheet 41 extend in different directions. As a result, the laminated sheet 40 can form one fiber-reinforced resin sheet including the reinforcing fibers 42 extending in different directions from each other.

The fiber-reinforced resin sheet of the present invention is an intermediate of a plurality of reinforcing fibers 42 arranged in advance so as to extend in different directions instead of the laminated sheet 40 (for example, the reinforcing fibers are woven in a lattice pattern). Etc.) may be impregnated with synthetic resin.

(Characteristics of this embodiment)
(1)
In the vehicle roof structure of the present embodiment, the roof panel 7 is a double panel composed of an outer panel 71 and an inner panel 72, and has both sides in the vertical direction of the annular frame 8 having higher rigidity than the roof panel 7. In the present embodiment, by being fixed to the panel joints 10) on the upper and lower surfaces, the annular frame 8 is less likely to be twisted and deformed, and the outer panel 71 and the inner panel 72 are less likely to bend. Therefore, the in-plane force (that is, the force acting in the in-plane direction of the panel) is efficiently transmitted from the annular frame 8 to both the outer panel 71 and the inner panel 72, and the load of other collisions including the side collision can be efficiently received. It becomes possible and it is possible to improve the side collision performance of the vehicle. Therefore, it is possible to maintain the side collision performance of the vehicle without providing a bridged roof rain between the pair of roof side rails 3.

(2)
In the vehicle roof structure of the present embodiment, the annular frame 8 extends along the peripheral surface of the roof panel 7 and is joined to the peripheral edge of the panel joint portion 10 and the vertical direction of the vehicle body 1 from the panel joint portion 10. It has a main body portion 9 having a cross-sectional shape including a vertical plate portion 11 extending to Z.

In the above configuration, the main body 9 of the annular frame 8 has a cross-sectional shape including a panel joint 10 extending along the peripheral surface of the roof panel 7 and a vertical plate 11 extending in the vertical direction Z. An annular frame 8 having a cross-sectional shape that is resistant to twisting and bending can be obtained.

(3)
In the vehicle roof structure of the present embodiment, since the main body 9 of the annular frame 8 has a hollow closed cross-sectional shape, the rigidity (flexural rigidity, torsional rigidity, etc.) of the annular frame 8 can be further increased. The weight of the annular frame 8 can be reduced.

(4)
In the vehicle roof structure of the present embodiment, the annular frame 8 is arranged inside the opening 6 formed by the pair of roof side rails 3, the front header 4, and the rear header 5, and the pair of roof side rails. It is connected to 3 adjacent to the width direction Y of the vehicle body 1 and is connected to the front header 4 and the rear header 5 adjacent to the front-rear direction X of the vehicle body 1. As a result, the load received by the roof side rail 3 at the time of a vehicle side collision can be reliably transmitted to the annular frame 8 inside the opening 6, and the load can be withstood by the highly rigid annular frame 8 and the roof panel 7. .. Therefore, it is possible to reliably maintain the side collision performance of the vehicle.

(5)
In the vehicle roof structure of the present embodiment, the roof side rail 3 has a flange portion 15 projecting inside the opening 6. The fastening portion 13 is fastened to the flange portion 15. With such a configuration, the load applied to the roof side rail 3 at the time of a vehicle side collision can be reliably transmitted to the annular frame 8 via the flange portion 15 and the fastening portion 13.

Further, the fastening portion 13 of the present embodiment is fastened to each of the pair of roof side rails 3, the front header 4, and the rear header 5. Therefore, in the event of a vehicle collision, the load can be reliably transmitted from the pair of roof side rails 3, the front header 4, and the rear header 5 to the annular frame 8 via the fastening portion 13, and the highly rigid annular frame 8 and roof panel 7 more reliably transmit the load. It can withstand the load at the time of a vehicle collision.

(6)
In the vehicle roof structure of the present embodiment, the upper end 16 of the annular frame 8 is located at substantially the same height as the upper end 3a of the roof side rail 3. The lower end 17 of the annular frame 8 is located below the flange portion 15.

In the above configuration, in the configuration in which the fastening portion 13 of the annular frame 8 is fastened to the flange portion 15 on the roof side rail 3 side, the upper end 16 of the annular frame 8 is substantially the same height as the upper end 3a of the roof side rail 3. By arranging the annular frame 8 so that the lower end 17 of the annular frame 8 is located below the flange portion 15 as well as being positioned, the height of the annular frame 8 can be secured, and the rigidity of the annular frame 8 ( It is possible to improve torsional rigidity and flexural rigidity).

(7)
The vehicle roof structure of the present embodiment includes a gusset 22 as a connecting member for connecting the roof side rail 3 and the annular frame 8 at a position below the flange portion 15.

With such a configuration, the roof side rail 3 is connected to the annular frame 8 by both the flange portion 15 and the gusset 22. As a result, the load received by the roof side rail 3 at the time of vehicle side collision is efficiently transmitted to both the outer panel 71 and the inner panel 72 of the annular frame 8 and the roof panel 7 via the two routes of the flange portion 15 and the gusset 22. It is possible to do.

(8)
In the vehicle roof structure of the present embodiment, the roof panel 7 (specifically, the outer panel 71) has a side edge portion 71a extending to the fastening portion 13 and fastened to the fastening portion 13, and the side edge portion 71a. And the fastening portion 13 is fastened to the flange portion 15 of the roof side rail 3.

In the above configuration, both the side edge portion 71a of the roof panel 7 and the fastening portion 13 of the annular frame 8 are fastened to the flange portion 15 of the roof side rail 3, so that the load received by the roof side rail 3 in the event of a vehicle collision is applied. The roof side rail 3 can be directly transmitted without passing through the main body 9 of the annular frame 8, and the load can be reliably distributed and received by both the annular frame 8 and the roof panel 7.

(9)
In the vehicle roof structure of the present embodiment, between the outer panel 71 and the entire surface of the panel joint 10 on the upper surface side of the annular frame 8, and between the inner panel 72 and the entire surface of the panel joint 10 on the lower surface side of the annular frame 8. Each is fastened via a high-rigidity adhesive 26.

With this configuration, by adhering both the outer panel 71 and the inner panel 72 to the entire upper and lower surfaces of the annular frame 8, the load can be transmitted from the entire upper and lower surfaces of the annular frame 8 to the outer panel 71 and the inner panel 72. Become. As a result, it becomes possible to efficiently receive the load on the entire annular frame 8, the outer panel 71, and the inner panel 72, and the rigidity of the vehicle body 1 is improved.

In addition, in combination with the above-mentioned high-rigidity adhesive 26, the outer panel 71 and the annular frame 8 and the inner panel 72 and the annular frame 8 may be further mechanically fastened with bolts or the like. .. In that case, the load transmission to the outer panel 71 and the inner panel 72 is further improved, and the rigidity of the vehicle body 1 is further improved.

(10)
In the vehicle roof structure of the present embodiment, the roof panel 7 has translucency. With this configuration, in this configuration, there is no roof rain that bridges between the pair of roof side rails 3, so that the degree of freedom of light transmission is increased.

(11)
In the vehicle roof structure of the present embodiment, since the annular frame 8 is made of a fiber reinforced resin such as CFRP, it is lighter and has higher rigidity than a steel frame.

Further, the main body 9 of the annular frame 8 of the present embodiment includes a laminated sheet 40 bent in an annular shape. The laminated sheet 40 includes a plurality of reinforcing fibers 42 made of long fibers and a synthetic resin covering the plurality of reinforcing fibers 42, and at least a part of the plurality of reinforcing fibers 42 extends in different directions. In this configuration, the laminated sheet 40 constituting the annular sheet portion 12 includes a plurality of reinforcing fibers 42 made of long fibers extending in different directions, and these reinforcing fibers 42 may receive loads from different directions. As it becomes possible, the annular frame 8 can withstand collisions in all directions including side collisions.

(12)
In the vehicle roof structure of the present embodiment, a portion 18 in which the roof panel 7 is joined to the panel joint portion 10 of the main body portion 9 in the annular frame 8 and a portion 19 in which the side edge portion 71a is fastened to the fastening portion 13 A space 20 having a closed cross section is formed between the roof panel 7 and the annular frame 8.

In the above configuration, there is a roof between the portion 18 where the roof panel 7 is joined to the panel joint portion 10 of the main body portion 9 of the annular frame 8 and the portion 19 where the side edge portion 71a is fastened to the fastening portion 13. A space 20 having a closed cross section is formed by the panel 7 and the annular frame 8. By reinforcing the periphery of the fastening portion 13 by the portion surrounding the space 20 having a closed cross section, it is possible to improve the rigidity (torsional rigidity, bending rigidity, etc.) around the fastening portion 13. Further, by having the space 20 having this closed cross section, it is possible to absorb the assembly error between the annular frame 8 and the roof panel 7 joined to the flange portion 15 of the roof side rail 3. ..

For example, even if the layer of the highly elastic adhesive 26 slightly protrudes from the predetermined range in the joint portions 18 and 19, the protrusion is absorbed in the space 20 so that problems such as poor assembly are less likely to occur.

1 Body 2 Roof 3 Roof side rail 3a Upper end 4 Front header 5 Rear header 6 Opening 7 Roof panel 8 Circular frame 9 Main body 10 Panel joint 11 Vertical plate 12 Circular seat 13 Fastening 14 Butt 15 Flange 16 Circular Upper end of frame 17 Lower end of annular frame 20 Space with closed cross section 26 High-rigidity adhesive 27 Adhesive 40 Laminated sheet (fiber reinforced resin sheet)
41 Single-layer sheet 42 Reinforcing fiber 43 Synthetic resin 71 Outer panel 71a Side edge 72 Inner panel

Claims (11)

It is a roof structure that constitutes the roof of a vehicle.
A pair of roof side rails, which are arranged apart from each other in the width direction of the vehicle body and constitute the skeleton of the side portion of the roof,
The front header and the rear header, which are arranged apart from each other in the front-rear direction of the vehicle body and constitute the skeletons of the front end portion and the rear end portion of the roof, respectively.
A roof panel covering the pair of roof side rails, the front header, and the opening formed by the rear header.
Provided with an annular frame joined to the periphery of the roof panel to support the roof panel.
The annular frame has a higher rigidity than the roof panel and is coupled to the pair of roof side rails, the front header, and the rear header.
The roof panel is a vehicle roof structure composed of an outer panel fixed to the upper surface of the annular frame and an inner panel fixed to the lower surface of the annular frame. The annular frame has a cross-sectional shape including a panel joint portion extending along a peripheral surface of the roof panel and joined to the peripheral edge, and a vertical plate portion extending in the vertical direction of the vehicle body from the panel joint portion. The vehicle roof structure according to claim 1. The vehicle roof structure according to claim 2, wherein the annular frame has a hollow closed cross-sectional shape formed by a pair of the panel joints and the pair of vertical plates. The vehicle roof structure according to any one of claims 1 to 3, wherein the annular frame is made of a fiber reinforced resin. The annular frame is disposed inside the opening and is coupled to the pair of roof side rails, the front header and the rear header.
The vehicle roof structure according to any one of claims 1 to 4. The roof side rail has a flange portion that protrudes inside the opening.
The annular frame includes a fastening portion that is fastened to the flange portion.
The vehicle roof structure according to claim 5. The upper end of the annular frame is located at substantially the same height as the upper end of the roof side rail.
The vehicle roof structure according to claim 6, wherein the lower end of the annular frame is located below the flange portion. A connecting member for connecting the roof side rail and the annular frame at a position below the flange portion is further provided.
The vehicle roof structure according to claim 6 or 7. The roof panel has a side edge portion that extends to the fastening portion and is fastened to the fastening portion.
The side edge portion and the fastening portion are fastened to the flange portion of the roof side rail.
The vehicle roof structure according to any one of claims 6 to 8. Any one of claims 1 to 9, wherein the outer panel and the entire upper surface of the annular frame and the inner panel and the entire lower surface of the annular frame are fastened with an adhesive, respectively. The roof structure of the vehicle described in. The vehicle roof structure according to any one of claims 1 to 10, wherein the roof panel has translucency.