JP6112666B2 - Auto body structure - Google Patents

Description

  The present invention provides an automobile body having an upper frame in which an A-pillar upper and a roof side rail are integrally continuous, and a plurality of support brackets for supporting the roof panel and the side outer panel provided on the inner surface in the vehicle width direction of the roof side rail. Concerning structure.

  Patent Document 1 below discloses a resin-made upper vehicle body having a hollow closed cross section formed by joining an inner panel and an outer panel, and a reinforcing frame made of steel pipe disposed therein and the upper vehicle body are joined by a rivet. Is known.

  Further, a vehicle body of an automobile is configured by connecting an inner panel and an outer panel to have a hollow closed cross section, and a steel pipe disposed inside the vehicle body and the vehicle body are connected via a separate bracket, as disclosed in Patent Document 2 below. It is.

Japanese Unexamined Patent Publication No. 01-103586 JP 2002-87322 A

  By the way, the thing described in the above-mentioned patent document 1 has a problem that the vehicle body rigidity depends only on the reinforcing frame made of steel pipe, so that the cross section of the steel pipe cannot be reduced, and the weight of the vehicle body increases accordingly.

  Moreover, since the thing described in the said patent document 2 connects a vehicle body and a steel pipe via a separate bracket, not only does the weight of the vehicle body increase by the amount of the bracket, but the separate bracket also includes the vehicle body and the steel pipe. Since the inner panel and the outer panel do not contribute to the improvement of the rigidity of the vehicle body, there is a problem that it is necessary to increase the cross section of the steel pipe in order to ensure the necessary rigidity.

  The present invention has been made in view of the above circumstances, and an object thereof is to join a roof panel and a side outer panel to a roof side rail lightly and firmly.

In order to achieve the above object, according to the first aspect of the present invention, the A-pillar upper and the roof side rail include an upper frame in which the roof side rail is integrated, and a roof panel and A vehicle body structure provided with a plurality of support brackets for supporting a side outer panel, wherein the support bracket is arranged in parallel with an axis of the roof side rail and supports the roof panel and the side outer panel. And a leg portion disposed in a direction orthogonal to the axis of the roof side rail and connected to the roof side rail and the support portion, the roof side rail has a circular cross section, and the support bracket is rectangular. The triangle-shaped leg portion obtained by bending the longitudinal end portion of the support portion having a shape, and the triangle Each side body structure of a motor vehicle, characterized in that it is formed in a circular arc shape connected to the upper outer peripheral surface of the roof side rail is proposed.

According to the invention described in claim 2 , in addition to the configuration of claim 1 , the support bracket includes one support part and one leg part, and is formed in an L shape. Alternatively, a vehicle body structure for an automobile is proposed, which includes a single supporting portion and a pair of front and rear legs and is formed in a U shape .

  According to the configuration of the first aspect, the plurality of support brackets provided on the inner surface in the vehicle width direction of the roof side rail and supporting the roof panel and the side outer panel are arranged in parallel with the axis of the roof side rail, A support bracket that supports the side outer panel and a leg portion that is arranged in a direction orthogonal to the axis of the roof side rail and that connects to the roof side rail and the support portion. The roof panel and the side outer panel can be firmly supported, and the support strength of the roof panel and the side outer panel is required by arranging any number of support brackets at any position on the roof side rail. It can be arbitrarily adjusted accordingly.

Moreover, since the roof side rail has a circular cross section, it can be manufactured at a very low cost while being lightweight and high in strength. In addition, the support bracket includes a triangular leg portion obtained by bending the longitudinal end portion of the rectangular support portion, and one side of the triangle is formed in an arc shape and is connected to the upper outer peripheral surface of the roof side rail. The support bracket can be firmly fixed to the roof side rail while minimizing the protruding amount of the bracket toward the vehicle compartment.

According to the second aspect of the present invention, the support bracket is formed in an L shape including one support portion and one leg portion, or includes one support portion and a pair of front and rear legs. Since it is formed in a U shape, the strength of the support bracket can be arbitrarily set according to the required strength .

The partial side view of the vehicle body side part frame of a motor vehicle. (First embodiment) FIG. 2 is a two-direction enlarged arrow view of FIG. 1. (First embodiment) FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1. (First embodiment) FIG. 4 is a four-direction enlarged arrow view of FIG. 2. (First embodiment) FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. (First embodiment) The figure corresponding to FIG. (Second to fourth embodiments) The figure corresponding to FIG. (Fifth embodiment)

First embodiment

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the present specification, the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are defined with reference to an occupant seated in the driver's seat.

  As shown in FIG. 1, a vehicle body side frame 11 of a five-door vehicle includes an upper frame 14 made of a steel pipe having a circular cross section, in which a roof side rail 12 and an A pillar upper rear portion 13 are integrated. The upper frame 14 is configured by bending a straight steel pipe into a predetermined shape by three-dimensional bending. Connected to the front end of the A-pillar upper rear portion 13 is an A-pillar upper front portion 15 that is formed by welding a pressed steel plate to form a hollow closed cross section. The A-pillar upper rear portion 13 and the A-pillar upper front portion 15 are connected to A. A pillar upper 16 is configured.

  The upper end of the A pillar lower 17 formed in a Y shape is connected to the A pillar upper front portion 15, and the upper ends of the B pillar 19 and the C pillar 20 are connected to the middle portion of the roof side rail 12 in the front-rear direction. The upper end of the D pillar 21 is connected to the rear end.

  As shown in FIGS. 1 and 2, a side outer panel 22 having a front door opening and a rear door opening is fixed to the outer surface of the vehicle body side frame 11 in the vehicle width direction. The front end of the left and right roof side rails 12, 12 is connected by a front roof arch 23 extending in the vehicle width direction, and is connected to the upper ends of the left and right B pillars 19, 19. The middle roof arch 24 connects the rear ends of the left and right roof side rails 12, 12 connected to the upper ends of the left and right D pillars 21, 21. The outer periphery of the roof panel 26 is supported by the front roof arch 23, the rear roof arch 25, and the left and right roof side rails 12, 12.

  As shown in FIGS. 2 to 4, the roof side rail 12 is provided with a plurality of support brackets 27 that are spaced apart at a predetermined interval in the front-rear direction. The support brackets 27 are provided in the vehicle width direction of the roof panel 26. The outer end portion and the upper end portion of the side outer panel 22 are overlapped and welded W1.

  The support bracket 27 made of one steel plate has a rectangular support portion 27a and a pair of triangular legs 27b and 27b obtained by bending the front and rear edges of the support portion 27a facing each other at right angles. The leg portions 27b and 27b are formed so that one side of the triangle is formed in an arc shape and is joined to the upper surface of the roof side rail 12 in the vehicle width direction by welding W2. In a state where the support bracket 27 is welded W2 to the roof side rail 12, the support portion 27a is disposed in parallel with the axis of the roof side rail 12, and the pair of triangular legs 27b and 27b are connected to the axis of the roof side rail 12. It arrange | positions so that it may orthogonally cross.

  The side outer panel 22 arranged so as to cover the roof side rail 12 from the outside in the vehicle width direction has a step portion 22a with its upper end bent downward, and a joint flange with the lower end of the step portion 22a bent inward in the vehicle width direction. 22b and a joining flange 22c whose lower end is bent downward. The roof panel 26 includes a stepped portion 26a whose outer end portion in the vehicle width direction is bent downward, and a joint flange 26b where the lower end of the step portion 26a is bent outward in the vehicle width direction. Then, the upper joint flange 22b of the side outer panel 22 and the joint flange 26b of the roof panel 26 are overlapped on the support portion 27a of the support bracket 27 from above and welded W1, and the lower joint flange 22c of the side outer panel 22 is welded. By welding W4 the upper end of the stay 28 with the lower end welded W3 to the lower surface of the roof side rail 12, the side outer panel 22 and the roof panel 26 are supported by the roof side rail 12.

  As shown in FIGS. 1 and 5, a support bracket 30 having the same structure as the support bracket 27 is provided to support the vehicle width direction end of the windshield 29 on the A pillar upper rear portion 13. It is joined to the front surface in the direction by welding W5. A front joint flange 22b connected to the step 22a of the side outer panel 22 is superimposed on the support portion 30a of the support bracket 30 and welded W6, and a rear end is welded to the rear joint flange 22c of the side outer panel 22. The side outer panel 22 is supported by the A pillar upper rear portion 13 by welding W4 to the rear surface of the A pillar upper rear portion 13 at the front end of the stay 28 that has been W3. Then, the windshield 29 is bonded G to the front surface of the support portion 30 a of the support bracket 30 via the joint flange 22 b of the side outer panel 22.

  Next, the operation of the first embodiment of the present invention having the above configuration will be described.

  The upper frame 14 in which the roof side rail 12 and the A pillar upper rear portion 13 of the vehicle body side frame 11 are integrated is a three-dimensional bending process of a steel pipe having a circular cross section. Therefore, the cross sectional area of the steel pipe is reduced to reduce the weight. The required strength of the upper frame 14 can be ensured while being planned, and the steel pipe having an inexpensive circular cross section is used as the material, so that it can be manufactured at low cost.

  The support bracket 27 provided on the inner surface in the vehicle width direction of the roof side rail 12 and supporting the outer end in the vehicle width direction of the roof panel 26 and the upper end of the side outer panel 22 has a structure in which one steel plate is bent in a U-shape. A support portion 27a arranged parallel to the axis of the roof side rail 12 to support the roof panel 26 and the side outer panel 22, and a support portion 27a arranged in a direction perpendicular to the axis of the roof side rail 12 to support the roof side rail 12. Since the pair of leg portions 27b and 27b connected to the portion 27a are provided, the roof panel 26 and the side outer panel 22 can be firmly supported by using the support bracket 27 which is easy to manufacture and is small and light. By arranging an arbitrary number of support brackets 27 at arbitrary positions on the rail 12, It can be arbitrarily adjusted as required support strength of Fupaneru 26 and the side outer panel 22.

  The support bracket 27 includes a pair of triangular leg portions 27b and 27b formed by bending the front and rear end portions of the rectangular support portion 27a, and one side of the triangle is formed in an arc shape so that the upper outer periphery of the roof side rail 12 is formed. Since it is welded W2 to the surface, the amount of protrusion of the support bracket 27 to the passenger compartment side is minimized as compared with the case where it is connected to the inner peripheral surface in the vehicle width direction, and the arrangement of parts such as curtain airbags is arranged. Space can be secured, and the length of the weld W2 with the roof side rail 12 can be sufficiently secured and firmly fixed without increasing the size of the leg portions 27b, 27b of the support bracket 27.

  Further, since the support brackets 30 for supporting the side outer panel 22 and the windshield 29 on the rear portion 13 of the A pillar upper have the same structure as the support brackets 27 described above, the same operational effects can be exhibited.

Second to fourth embodiments

  Next, second to fourth embodiments of the present invention will be described with reference to FIG.

  The support bracket 27 of the first embodiment described above has a pair of leg portions 27b and 27b at both ends of the support portion 27a and is formed in a U-shape. The second support bracket 27 shown in FIG. The support bracket 27 of the embodiment is formed in an L shape with only one leg portion 27b at one end of the support portion 27a.

  The support bracket 27 of the second embodiment has a slightly lower strength than the support bracket 27 of the second embodiment, but can be reduced in weight accordingly. Therefore, if the support bracket 27 of the first embodiment and the support bracket 27 of the second embodiment are properly used according to the required strength, both strength and weight reduction can be achieved.

  The support bracket 27 of the third embodiment shown in FIG. 6B includes a pair of component mounting portions 27c and 27c in which the lower ends of the pair of leg portions 27b and 27b are respectively bent outward in the front-rear direction. Weld nuts 31, 31 are provided on the upper surfaces of the attachment portions 27c, 27c.

  According to the present embodiment, the support bracket 27 can be more firmly fixed to the roof side rail 12 by welding W2 the leg portions 27b and 27b and the component mounting portions 27c and 27c to the roof side rail 12. In addition, it is possible to easily and firmly fix parts such as a curtain airbag and a grab rail by simply screwing bolts into the weld nuts 31 and 31 of the existing support bracket 27 without adding a special bracket. .

  In the third embodiment shown in FIG. 6B, the weld nuts 31 are provided on the pair of component mounting portions 27c and 27c, respectively, but the weld nut 31 is provided only on one of the component mounting portions 27c. May be provided.

  The support bracket 27 of the fourth embodiment shown in FIG. 6C is obtained by omitting one leg portion 27b and one component mounting portion 27c from the support bracket 27 of the third embodiment. By properly using the support bracket 27 of the third embodiment and the support bracket 27 of the fourth embodiment as needed, both strength and weight reduction can be achieved.

  In the third and fourth embodiments, even if a stat bolt is provided instead of the weld nut 31 or only a component mounting hole is provided, the same effect can be achieved.

Fifth embodiment

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  The roof side rails 12 of the first to fourth embodiments described above are configured by steel pipes having a circular cross section, whereas the roof side rails 12 of the fifth embodiment are configured by aluminum pipes having a non-circular cross section. . Such a roof side rail 12 can be manufactured as an extruded material. The joint flange 22b of the side outer panel 22 is extended inward in the vehicle width direction from the weld W1 part with the joint flange 26b of the roof panel 26, and the extension part is overlapped with the support part 27a of the support bracket 27 and welded W7.

  The roof side rail 12 includes first to third flat surfaces 12a to 12c, and the first flat surface 12a is parallel to the inner surface of the side outer panel 22 so that the cross section is enlarged to increase the strength. be able to. Further, when the leg portion 27b of the support bracket 27 is welded W2 to the second flat surface 12b, the weld W2 portion becomes a straight line, so that the manufacture of the support bracket 27 becomes easier, and the third flat surface 12c. It is possible to easily and firmly fix components such as curtain airbags and grab rails.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, in the embodiment, the upper frame 14 is bent by three-dimensional bending, but it may be bent by three-dimensional hot bending or hydroforming.

  The present invention is not limited to the five-door vehicle of the embodiment, and can be applied to various types of vehicles such as a four-door vehicle and a two-door vehicle.

  Further, the upper frame of the present invention is not limited to the steel pipe of the embodiment, and may be made of aluminum pipe or FRP pipe, so that the degree of freedom in selecting the material of the upper frame is improved.

12 the roof side rail 14 upper frame 16 A-pillar upper 22 side outer panel 26 roof panel 27 the support bracket 27a supporting portion 27b legs

Claims (2)

An A-pillar upper (16) and a roof side rail (12) are provided with an upper frame (14) that is integrally continuous. A roof panel (26) and a side outer panel (22) A vehicle body structure provided with a plurality of support brackets (27) for supporting
The support bracket (27) is disposed in parallel to the axis of the roof side rail (12) and supports the roof panel (26) and the side outer panel (22). comprising legs which are arranged in a direction perpendicular to the axis connecting to the roof side rail (12) and said support portion (27a) of the rail (12) and (27b), said roof side rail (12) is circular cross section The support bracket (27) includes a triangular leg portion (27b) obtained by bending a longitudinal end portion of the rectangular support portion (27a), and one side of the triangle is formed in an arc shape. The vehicle body structure is connected to the upper outer peripheral surface of the roof side rail (12) . Before Symbol support bracket (27), one of said support portion (27a) and one of said legs comprises a (27b) is formed in an L-shape, or one of said support portion (27a) and the front and rear The vehicle body structure according to claim 1, wherein the vehicle body structure is provided in a U shape with a pair of the leg portions (27 b) .

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