JP5803685B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure.

  2. Description of the Related Art Conventionally, a vehicle body structure in which a gusset is attached across a roof reinforcement, a rail inner panel of a roof side rail, and a pillar inner panel of a center pillar is known (see, for example, Patent Document 1). This gusset improves the rigidity of the vehicle body against a load input from the outside in the vehicle width direction, such as during a side collision.

JP-A-9-76938

  However, in such a vehicle body structure, further improvement in rigidity is desired with respect to a load input from the outside in the vehicle width direction, and there is still room for improvement in means for improving the rigidity.

  Therefore, in view of the above circumstances, an object of the present invention is to obtain a vehicle body structure capable of improving the rigidity of a vehicle body against a load input from the outside in the vehicle width direction.

In order to achieve the above object, the vehicle body structure according to claim 1 of the present invention is the same as the roof reinforcement arranged along the vehicle width direction on the lower surface side of the roof panel and at the same position in the vehicle longitudinal direction. while extending in the vertical direction of the vehicle body, and a pillar inner panel first bead portion to be convex toward the vehicle compartment side is formed in the upper along the extending direction, it heavy part in the first bead portion A second bead portion that is combined and continuous with the first bead portion is formed in a convex shape toward the passenger compartment side, an outer end portion in the vehicle width direction is fixed to the pillar inner panel, and an inner end portion in the vehicle width direction is possess a fixed to the roof reinforcement gussets, and the roof reinforcement, the third convex bead portion to the vehicle interior side continuous with a part thereof superposed second bead portion to the second bead portion Shape It has been is characterized in Rukoto.

According to the invention described in claim 1, together with the first bead portion to be convex toward the vehicle compartment side at the top of the pillar inner panel is formed, a gusset, a part is fitted it heavy to the first bead portion The second bead portion continuous with the first bead portion is formed in a convex shape toward the passenger compartment . The roof reinforcement is partially overlapped with the second bead portion, and a third bead portion continuous with the second bead portion is formed in a convex shape toward the passenger compartment. Therefore, the rigidity through the gusset from the pillar inner panel to the roof reinforcement can be improved. Therefore, the rigidity of the vehicle body can be improved with respect to the load input from the outside in the vehicle width direction.

The vehicle body structure according to claim 2 is the vehicle body structure according to claim 1, wherein the ridge line of the first bead part, the ridge line of the second bead part, and the ridge line of the third bead part are continuous. It is characterized in that it is.

According to invention of Claim 2, the ridgeline of the 1st bead part, the ridgeline of the 2nd bead part, and the ridgeline of the 3rd bead part are continuing . Therefore, the rigidity through the gusset from the pillar inner panel to the roof reinforcement can be further improved. Therefore, the rigidity of the vehicle body can be further improved with respect to the load input from the outside in the vehicle width direction.

  As described above, according to the present invention, the rigidity of the vehicle body can be improved with respect to the load input from the outside in the vehicle width direction.

It is a side view which shows the frame structure of the vehicle provided with the vehicle body structure which concerns on this embodiment. It is a perspective view which shows the gusset which connects a pillar inner panel and roof reinforcement. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 3 is a cross-sectional view taken along line B-B in FIG. 2. It is sectional drawing seen from the vehicle body front-back direction which shows the vehicle body structure before a side collision. It is sectional drawing seen from the vehicle body front-back direction which shows the vehicle body structure after a side collision.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, an arrow UP appropriately shown in each drawing is an upward direction of the vehicle body, an arrow FR is a forward direction of the vehicle body, and an arrow OUT is an outer side of the vehicle width direction. Further, in the following description, when using front / rear, up / down, and left / right directions unless otherwise specified, front / rear in the front / rear direction of the vehicle body, up / down in the up / down direction of the vehicle body, and left / right in the left / right direction of the vehicle body (vehicle width direction).

  As shown in FIGS. 1, 2, and 5, a roof portion 12 of a vehicle such as an automobile is provided with a roof panel 14 that constitutes a roof of a passenger compartment. A pair of left and right roof side rails 20 that are highly rigid vehicle body skeleton members extending in the longitudinal direction of the vehicle body are provided on both sides of the roof panel 14 in the vehicle width direction.

  As shown in FIG. 5, each roof side rail 20 includes a rail inner panel 22 disposed on the inner side in the vehicle width direction, a rail outer panel 24 disposed on the outer side in the vehicle width direction, a rail inner panel 22, and a rail outer panel 24. Rail reinforcement 26 arranged between the two. The rail inner panel 22 and the rail reinforcement 26 are joined to each other at the upper end side and the lower end side to form a closed cross-sectional structure.

  A joint portion on the lower end side of the rail inner panel 22 and the rail reinforcement 26 protrudes in a flange shape toward the lower side of the vehicle body, and the rail inner panel 22 including the joint portion is erected on the vehicle body side portion. An upper end portion 32 </ b> A of the pillar inner panel 32 constituting the inner surface side of the center pillar 30 is joined.

  The center pillar 30 is a highly rigid vehicle body skeleton member extending in the vertical direction of the vehicle body. On the outer surface in the vehicle width direction of the rail reinforcement 26, an upper end portion 34A of the pillar outer panel 34 constituting the outer surface side of the center pillar 30 is provided. It is joined. That is, the center pillar 30 is constituted by a pillar inner panel 32 and a pillar outer panel 34 in a closed cross-sectional structure.

  A joint portion on the upper end side of the rail inner panel 22 and the rail reinforcement 26 protrudes in a flange shape toward the inner side in the vehicle width direction, and the joint portion has an outer end portion 14A in the vehicle width direction on the roof panel 14. And the outer end 24A in the vehicle width direction of the rail outer panel 24 are overlapped and joined.

  Note that the vehicle width direction outer end portion 14A of the roof panel 14 and the vehicle outer width direction inner end portion 24A of the rail outer panel 24 are each bent and formed in a stepped shape toward the lower side. Therefore, a groove portion 28 having the joint portion as a bottom wall is formed at both ends in the vehicle width direction of the roof portion 12 along the longitudinal direction of the vehicle body (see FIGS. 5 and 6).

  The rail outer panel 24 is integrally formed as a part of the side member outer panel 16 and covers the pillar outer panel 34 from the outside. Further, the rail reinforcement 26 functions as a center pillar reinforcement that reinforces the center pillar 30.

  On the upper part of the pillar inner panel 32 of the center pillar 30, a convex portion 36 as a first bead portion is formed so as to have a sectional uneven shape shown in FIG. 4. Specifically, as shown in FIG. 2, the pillar inner panel 32 has convex portions 36 </ b> A and 36 </ b> B that are convex in cross-section toward the passenger compartment side at the center and both ends in the vehicle longitudinal direction. It is formed along the extending direction (vertical direction). Thereby, the rigidity of the pillar inner panel 32 is improved.

  The protrusion 36A formed at the center of the pillar inner panel 32 in the longitudinal direction of the vehicle body is formed shorter than the protrusion 36B formed at both ends of the pillar inner panel 32 in the longitudinal direction of the vehicle body. Specifically, the convex portion 36B is formed over substantially the entire longitudinal direction (vertical direction) of the pillar inner panel 32, but the convex portion 36A is an attachment hole for attaching a shoulder anchor of a seat belt (not shown). Only the position including 33 is formed.

  On the other hand, between the left and right roof side rails 20 (at the same position as the center pillar 30 in the longitudinal direction of the vehicle body) at the portion where the upper end portion 32A of the pillar inner panel 32 is joined, a roof reinforcement 40 as a vehicle body frame member is provided. It is arranged along the vehicle width direction. And in this roof reinforcement 40, the convex part 46 as a 3rd bead part is formed so that it may become the cross-sectional uneven | corrugated shape shown in FIG.

  Specifically, a convex portion 45 having a convex cross-section toward the upper side of the vehicle body is formed at the center portion of the roof reinforcement 40 in the longitudinal direction of the vehicle body along the extending direction (vehicle width direction) of the roof reinforcement 40. As a result, two protrusions 46 having a convex cross section toward the passenger compartment side are provided on both ends of the roof reinforcement 40 in the longitudinal direction of the vehicle body, and the extending direction of the roof reinforcement 40 (vehicle width direction). It is formed along. As a result, the rigidity of the roof reinforcement 40 is improved.

  In addition, flange portions 44 projecting toward the vehicle body front side and vehicle body rear side are integrally formed at both ends of the roof reinforcement 40 in the vehicle longitudinal direction, and mastic (adhesive) is formed on each flange portion 44. It is set up. With this mastic (adhesive), the roof reinforcement 40 is joined to the lower surface (back surface) of the roof panel 14.

  Further, a gusset 50 as a highly rigid load transmission member is fixed between the lower surface of the roof reinforcement 40 and the inner surface of the pillar inner panel 32 (rail inner panel 22) by fastening. That is, the gusset 50 is arranged along the extending direction of the center pillar 30 and the roof reinforcement 40 so that the load input to the center pillar 30 at the time of a side collision can be transmitted to the roof reinforcement 40. Yes.

  And the vehicle width direction inner side edge part of this gusset 50 is formed in the uneven | corrugated shape of a cross section along the external shape of the roof reinforcement 40. As shown in FIG. That is, the gusset 50 has convex portions 56 as second bead portions extending in the vehicle body front direction both ends so that the cross-sectional uneven shape shown in FIG. ).

  Specifically, a convex portion 55 having a convex cross-section toward the upper side of the vehicle body is formed along the extending direction (vehicle width direction) of the gusset 50 at the vehicle longitudinal direction central portion of the gusset 50. As a result, two convex portions 56 having a convex cross section toward the passenger compartment side are formed on both ends of the gusset 50 in the longitudinal direction of the vehicle body along the extending direction (vehicle width direction) of the gusset 50. It has become.

  A plurality (for example, two) of bolt insertion holes 52 (see FIG. 3) are formed at the vehicle width direction inner side end portion of the gusset 50 at the same position in the vehicle width direction and aligned in the vehicle longitudinal direction. A plurality of (for example, two) bolt insertion holes 42 (see FIG. 3) are formed at the vehicle width direction outer side end portion of the roof reinforcement 40 at the same position in the vehicle width direction and aligned in the longitudinal direction of the vehicle body. A weld nut 48 is provided coaxially with the bolt insertion hole 42 on the upper surface of the roof reinforcement 40.

  Accordingly, the bolt insertion hole 52 of the gusset 50 is communicated with the bolt insertion hole 42 of the roof reinforcement 40, and the bolt 18 (see FIGS. 2 and 3) is inserted from the vehicle compartment side and screwed into the weld nut 48. The vehicle width direction inner side end portion of the gusset 50 is fastened and fixed to the lower surface of the roof reinforcement 40.

  That is, a part of the convex part 56 (the convex part 55) of the gusset 50 (an inner end part in the vehicle width direction) is a part of the convex part 46 (the convex part 45) of the roof reinforcement 40 (an outer end part in the vehicle width direction). And are fastened and fixed in a state of being overlapped from below (a state of being matched with no gap). Thereby, the convex part 56 of the gusset 50 and the convex part 46 of the roof reinforcement 40 are the structure connected continuously in the state which mutually overlapped the part.

  On the other hand, the outer end portion in the vehicle width direction of the gusset 50 is formed in an uneven shape in cross section along the outer shape of the pillar inner panel 32. That is, the convex portion 56 of the gusset 50 is formed as a wide one without forming the convex portion 55 at the outer end portion in the vehicle width direction so as to have a cross-sectional uneven shape shown in FIG. Both ends of the gusset 50 in the longitudinal direction of the vehicle body are flange portions 58 that are bent so as to be convex toward the passenger compartment.

  Further, only one bolt insertion hole 54 (see FIG. 4) is formed at the center of the outer end portion of the gusset 50 in the vehicle width direction, and the pillar inner panel 32 corresponding to the outer end portion of the gusset 50 in the vehicle width direction is formed. Only one bolt insertion hole 38 (see FIG. 4) is formed at a predetermined position. A weld nut 48 is provided coaxially with the bolt insertion hole 38 on the outer surface of the pillar inner panel 32.

  Therefore, the bolt insertion hole 54 of the gusset 50 is communicated with the bolt insertion hole 38 of the pillar inner panel 32, and the bolt 18 (see FIGS. 2 and 4) is inserted from the vehicle compartment side and screwed into the weld nut 48. The outer end of the gusset 50 in the vehicle width direction is fastened and fixed to the inner surface of the pillar inner panel 32.

  That is, a part of the convex part 56 of the gusset 50 (the outer end in the vehicle width direction) is superimposed on a part of the convex part 36 (the convex part 36A) of the pillar inner panel 32 from the bottom. It is fastened and fixed in a closed state (a state in which it is matched with no gap). As a result, the convex portion 56 of the gusset 50 and the convex portion 36A of the pillar inner panel 32 are continuously connected in a state where a part thereof is overlapped with each other, and the flange portion 58 of the gusset 50 and the convex portion of the pillar inner panel 32 are connected. The part 36 </ b> B is configured to be continuously connected in a state in which a part thereof is overlapped with each other.

  As described above, in the vehicle body structure 10 according to the present embodiment, the protrusions 36 (the protrusions 36A) of the pillar inner panel 32, the protrusions 56 of the gusset 50, and the protrusions 46 of the roof reinforcement 40 are partially formed. Since it can connect continuously in the piled-up state, the rigidity of the vehicle body from the pillar inner panel 32 to the roof reinforcement 40 via the gusset 50 is improved.

  Next, the operation of the vehicle body structure 10 including the roof reinforcement 40 (convex portion 46), the gusset 50 (convex portion 56), and the pillar inner panel 32 (convex portion 36) configured as described above will be described.

  As shown in FIG. 6, when a side collision occurs in the vehicle due to the barrier W or the like, a load is input from the side member outer panel 16 to the pillar outer panel 34 of the center pillar 30 from the outside in the vehicle width direction. Then, a load is input to the rail reinforcement 26 from the upper end portion 34A of the pillar outer panel 34, and a load is input to the pillar inner panel 32 through the rail inner panel 22 from the joint portion on the lower end side of the rail reinforcement 26. .

  Here, convex portions 36A and 36B are formed at the vehicle longitudinal direction center portion and both end portions on the upper portion of the pillar inner panel 32, respectively, and the rigidity of the pillar inner panel 32 is improved. Therefore, even if the joint portion on the lower end side of the rail reinforcement 26 and the rail inner panel 22 is pressed against the pillar inner panel 32 by the load, the pillar inner panel 32 can receive the load.

  That is, as a result, plastic deformation (collapse) of the rail reinforcement 26 toward the inner side in the vehicle width direction can be promoted, and impact energy due to the load can be absorbed by the plastic deformation. Thus, in the vehicle body structure 10 according to the present embodiment, the energy absorption characteristics by the rail reinforcement 26 having the highest strength and rigidity can be maximized.

  Moreover, the convex part 36 (convex part 36A) formed in this pillar inner panel 32 overlaps the convex part 56 formed in the gusset 50, and is continued in the extending direction. Further, the convex portion 56 of the gusset 50 is overlapped with the convex portion 46 formed on the roof reinforcement 40 and is continued in the extending direction.

  Therefore, the load can be transmitted from the pillar inner panel 32 to the gusset 50, and further, can be transmitted from the gusset 50 to the roof reinforcement 40. That is, by this, impact energy due to the load can be absorbed by the gusset 50 and the roof reinforcement 40.

  In addition, by forming the convex portions 56 and the convex portions 46 and improving the rigidity of the gusset 50 and the roof reinforcement 40, the gusset 50 has a fastening point (bolt 18) with the roof reinforcement 40. As a fulcrum, a rotational component (bending deformation) toward the inside in the vehicle width direction can be generated. Therefore, the impact energy due to the load can be released (absorbed) by converting it into its rotational component.

  In other words, according to the vehicle body structure 10 according to the present embodiment, the rigidity of the vehicle body can be improved with respect to the load input from the vehicle width direction outer side at the time of a side collision of the vehicle, by the action as described above. 30 can be prevented from being separated (separated) from the roof reinforcement 40. Therefore, at the time of a side collision of the vehicle, the deformation of the center pillar 30 toward the passenger compartment can be suppressed, and the reduction of the passenger compartment space can be suppressed (the passenger compartment space can be secured). ).

  The vehicle body structure 10 according to the present embodiment has been described with reference to the drawings. However, the vehicle body structure 10 according to the present embodiment is not limited to the illustrated one, and does not depart from the gist of the present invention. The design can be changed as appropriate. For example, the vehicle body structure 10 according to the present embodiment may be applied to other pillars such as forming a convex portion 36 as a first bead portion on a pillar inner panel of a rear pillar (not shown).

  Further, at least the pillar inner panel 32 may be provided with the convex portion 36 as the first bead portion, and the gusset 50 may be provided with the convex portion 56 as the second bead portion. The convex part 46 as a bead part does not need to be formed. However, it is preferable that the roof reinforcement 40 is also provided with the convex portion 46 as the third bead portion because the rigidity of the vehicle body at the time of a side collision can be further improved.

DESCRIPTION OF SYMBOLS 10 Car body structure 14 Roof panel 20 Roof side rail 30 Center pillar 32 Pillar inner panel 36 Convex part (1st bead part)
40 Roof reinforcement 46 Convex part (third bead part)
50 Gusset 56 Convex part (second bead part)

Claims (2)

The roof reinforcement arranged along the vehicle width direction on the lower surface side of the roof panel extends in the vertical direction of the vehicle body at the same position in the vehicle longitudinal direction, and is convex toward the vehicle compartment side along the extending direction. a pillar inner panel first bead portion comprising formed thereon;
Together with the second bead portion continuous with the part being combined I heavy first bead portion to the first bead portion is formed in a convex shape toward the vehicle compartment side, the vehicle width direction outer side end to the pillar inner panel A gusset that is fixed and whose inner end in the vehicle width direction is fixed to the roof reinforcement;
I have a,
Wherein the roof reinforcement, the vehicle body structure in which the third bead portion continuous with a part thereof superposed second bead portion to the second bead portion, characterized that you have been formed in a convex shape toward the vehicle compartment side. 2. The vehicle body structure according to claim 1, wherein a ridge line of the first bead part, a ridge line of the second bead part, and a ridge line of the third bead part are continuous .

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