JP2013159118A - Vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components, for preventing a roof inner from being drooped in welding with a vehicle body structure member and for suppressing the bending of a front window and the chattering marks and backlash of a rearview mirror.SOLUTION: A vehicle body structure comprises a roof inner 120 and a reinforcing bracket 130. The roof inner 120 includes a sloping surface 122 and an extension surface 124. The sloping surface 122 has inclination corresponding to that of a roof panel in a side view and the extension surface 124 extends, continuously from the sloping surface 122, in a direction on its top face side. The reinforcing bracket 130 includes a first plane part 132 and a second plane part 134 which are welded to the extension surface 124 and sloping surface 122 of the roof inner 120, respectively. The roof inner 120 and the reinforcing bracket 130 are welded while being abutted to each other by elastically deforming the reinforcing bracket in such a manner that an angle R1 formed from the first plane part 132 and second plane part 134 of the reinforcing bracket 130 before mounting to the roof inner 120 becomes closer to an angle R2 formed from the sloping surface 122 and the extension surface 124.

Description

  The present invention relates to a vehicle body structure in the vicinity of an end in a vehicle front-rear direction of a roof panel that constitutes a top surface of a vehicle body.

  A roof inner (also referred to as a roof member or inner panel) extending in the vehicle width direction is provided as a reinforcing member inside a vehicle roof panel (also referred to as a roof outer). Thereby, the structural strength against impact load from the side of the vehicle can be improved. The roof inner also has a role of attaching and supporting interior members and interior components in the vehicle interior. For example, in Patent Document 1, a room mirror, which is an interior member, is supported by a front header panel (roof inner) disposed in the vicinity of an end portion of a roof panel on the vehicle front side via a substrate and a stay attached thereto.

  The roof inner is disposed in the vicinity of an end of the roof panel on the vehicle front side or the vehicle rear side (hereinafter referred to as an end in the vehicle front-rear direction) and between the ends of the roof panel in the vehicle front-rear direction. Both of these roof inners are joined to the vehicle body structural member at the outer side in the vehicle width direction. On the other hand, on the inner side in the vehicle width direction of the roof inner, the end portion (end edge) in the vehicle front-rear direction is joined to the roof panel. At this time, a roof inner (hereinafter referred to as a roof inner in the vicinity of the end portion) disposed near the end portion of the roof panel in the vehicle front-rear direction and a roof inner (hereinafter referred to as an end portion) disposed between the end portions of the roof panel in the vehicle front-rear direction. The method of joining to the roof panel may be different from that of the roof inner part.

  Specifically, when the roof inner between the end portions is joined to the roof panel by welding, the weld mark is visible from the outside of the roof panel, and the appearance is impaired. For this reason, the roof inner between the end portions is bonded (joined) to the roof panel by applying an adhesive such as a mastic sealer to both ends (both ends edges) in the vehicle front-rear direction on the inner side in the vehicle width direction. Even in the roof inner in the vicinity of the end, the inner end (end edge) in the vehicle front-rear direction becomes visible from the outside when welding marks are generated, so that it is adhered to the roof panel by applying a mastic sealer or the like as described above. Is done. On the other hand, the outer edge (edge) of the roof inner in the vehicle front-rear direction in the vicinity of the edge is covered with a roof panel by another member (for example, a front window, a rear window, etc.). Hard to see from outside. Accordingly, the outer end (edge) of the roof inner near the end in the vehicle front-rear direction is joined to the roof panel by welding.

JP 2005-035364 A

  When the roof inner is assembled, first, an end portion (edge) in the vehicle front-rear direction of the roof inner is joined to the roof panel on the inner side in the vehicle width direction. As described above, in the roof inner in the vicinity of the end portion, one end edge is joined to the roof panel by welding, and the other end edge is joined to the roof panel by mastic sealer. Then, the roof panel to which the roof inner is joined is turned over so that the roof inner is located below the roof panel, and both ends of the roof inner in the vehicle width direction are joined to the vehicle body structural member (for example, a pillar panel) by welding.

  However, since the roof inner is a sheet metal member having a length in the vehicle width direction, the roof inner is heavy. For this reason, in the roof inner in the vicinity of the end portion, when the roof panel is turned over during welding with the vehicle body structural member, the other end edge (the end edge on the side where the mastic sealer is applied) hangs down, and one end edge ( There is a case where a state where the roof panel is supported only by the edge of the welded side, that is, a so-called cantilever state. In such a state, the position of the roof inner is displaced, and this position displacement causes the sealer applied to one edge to flow down, causing a sealer failure.

  As another problem, in the vehicle body structure in the vicinity of the end of the roof panel on the vehicle front side, measures are taken to suppress the bending of the front window and the chatter and backlash of the rearview mirror. Specifically, a front window is disposed in front of the roof panel, and a sound generated when the front window is bent becomes noise in the vehicle interior, which adversely affects the quietness in the vehicle interior. Therefore, a mass damper may be set on the surface of the roof inner disposed near the end of the roof panel on the vehicle front side. As a result, the mass damper becomes a weight and a load is applied to the upper portion of the front window, so that the bending of the front window is suppressed.

  Further, as described above, the roof inner disposed in the vicinity of the end portion of the roof panel on the vehicle front side may support the rearview mirror. In order to prevent this rearview mirror from vibrating during travel (battery) and rattling when an occupant moves the rearview mirror, a rearview mirror reinforcement is attached to such a roof inner, The support is reinforced. In Patent Document 1, an elastic body for preventing chatter is disposed between the front header panel (roof inner) and the stay portion of the mirror.

  By providing the mass damper and the rearview mirror reinforcement as described above, the bending of the front window and the chatter and backlash of the rearview mirror are suppressed, but in such a configuration, each member and therefore it is attached. This increases the number of parts. The same applies to the configuration of Patent Document 1. For this reason, a configuration capable of reducing the number of parts while obtaining the same effect is demanded.

  In view of such a problem, the present invention reduces the number of parts for preventing drooping of the roof inner at the time of welding to the vehicle body structural member and suppressing the bending of the front window and the chattering and rattling of the rearview mirror. The purpose of this is to provide a vehicle body structure that can be used.

  In order to solve the above problems, a representative configuration of a vehicle body structure according to the present invention is a vehicle body structure in the vicinity of an end portion in the vehicle front-rear direction of a roof panel that constitutes the top surface of the vehicle body, and the vehicle interior side of the roof panel. A roof inner including an inclined surface extending in the vehicle width direction and having an inclination corresponding to the inclination of the roof panel in a side view, and an extended surface extending continuously from the inclined surface toward the upper surface side of the inclined surface; The reinforcing bracket is higher in rigidity than the roof inner and welded to the inner side of the roof inner. The reinforcing bracket is welded to the extended surface and the inclined surface of the roof inner and is continuous at the lower end portion. An angle R1 formed between the first flat surface portion and the second flat surface portion of the reinforcing bracket before being attached to the roof inner in a side view including the flat surface portion is an inclined surface and an extended surface of the roof inner There smaller than the angle R2, Rufuin'na a reinforcing bracket, characterized in that the corners R1 is welded in a state of being contact with each other by elastically deforming the reinforcement bracket so as to approach the corner R2.

  According to the above configuration, since the reinforcing bracket is welded to the roof inner in an elastically deformed state, they are in a state of strong interference (hereinafter referred to as strong interference). The roof inner is biased upward when the reinforcing bracket in the elastically deformed state, that is, in a state where a load is applied, returns to an unloaded state (the shape before elastic deformation). As a result, the roof inner is pushed upward, and the drooping of the roof inner is suppressed.

  In particular, by applying the present invention to a roof inner disposed near the end of the roof panel on the vehicle front side, the reinforcing bracket can function as a mass damper that prevents the front window from being bent. As a result, it is not necessary to separately provide a mass damper, so that a mass damper and thus a fixture for fixing the mass damper are not necessary, and the number of parts can be reduced.

  The inclined surface of the roof inner and the second flat surface portion of the reinforcing bracket may be welded closer to the lower end portion than a position that is half the length of the second flat surface portion in a side view. As a result, the inclined surface and the second plane portion are welded in the vicinity of a portion where the lower end portions of the first plane portion and the second plane portion are continuous (hereinafter referred to as a continuous portion). For this reason, it becomes possible to raise the force (repulsion effect) which a reinforcement bracket urges | biases a roof inner upwards compared with the case where a welding location is separated from the continuous part of a 1st plane part and a 2nd plane part. .

  The continuous portion of the first flat portion and the second flat portion of the reinforcing bracket may have a larger curvature than the continuous portion of the first flat portion and the second flat portion of the roof inner. Thereby, concentration of the residual stress to the continuous part of the first plane part and the second plane part can be suppressed.

  The plate thickness of the reinforcing bracket is preferably thicker than the plate thickness of the roof inner. As a result, the rigidity of the reinforcing bracket can be improved, and as a result, the force (repulsive effect) of the reinforcing bracket urging the roof inner upward can be further increased. Moreover, the weight of the reinforcing bracket becomes heavy due to the thick plate thickness. Thereby, a reinforcement bracket can be functioned as a weight, and the function as a mass damper mentioned above can be improved further.

  The roof inner is disposed in the vicinity of the end of the roof panel in front of the vehicle and supports a rearview mirror disposed in the vehicle interior, and the reinforcing bracket is preferably disposed in a region of the roof inner where the rearview mirror is supported. According to this configuration, the reinforcing bracket can be further used as a room mirror reinforcement attached to the roof inner in order to prevent chatter and rattling. As a result, it is not necessary to separately provide a room mirror reinforcement, so that the number of parts can be further reduced.

  According to the present invention, the vehicle body structure capable of preventing the drooping of the roof inner during welding with the vehicle body structural member and reducing the number of parts for suppressing the bending of the front window and the chattering and rattling of the rearview mirror. Can be provided.

It is a figure explaining the vehicle body structure concerning this embodiment. It is an enlarged view of FIG. FIG. 3 is a cross-sectional view of FIG. 2.

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

  FIG. 1 is a diagram for explaining a vehicle body structure 100 according to the present embodiment, FIG. 1A is an external perspective view of the vehicle body structure 100 of the present embodiment, and FIG. It is the figure which observed the vehicle body structure 100 of a) from the compartment side. For ease of understanding, FIG. 1B shows a state in which the roof lining 110 and the reinforcing bracket 130 (see FIG. 3A) are not shown.

  As shown in FIG. 1A, in the vehicle body structure 100 of the present embodiment, a roof panel 102 that constitutes the top surface of a vehicle body (the whole is not shown) is arranged at the upper portion, and in front of the roof panel 102. A front window 104 is arranged. As shown in FIG. 1B, in the vehicle body structure 100, a roof inner 120 is disposed in the vicinity of the end portion on the vehicle front side on the vehicle inner side of the roof panel 102.

  The roof inner 120 is a member that extends in the vehicle width direction on the inner side of the roof panel 102 and improves the structural strength against an impact load from the side of the vehicle. The roof inner 120 is joined to the other ends of pillar panels 108a and 108b (vehicle body structural members) whose one ends are joined to the side body panels 106a and 106b at both ends on the outer side in the vehicle width direction.

  That is, in the present embodiment, as the vehicle body structure 100 in the vicinity of the end portion of the roof panel 102 in the vehicle front-rear direction, a vehicle body structure (vehicle body front structure) in the vicinity of the end portion of the roof panel 102 on the vehicle front side is illustrated. . However, this is only an example, and the present invention is also applicable to a vehicle body structure (vehicle body rear structure) on the vehicle rear side of the roof panel 102. Further, the vehicle body structural member to which the both ends of the roof inner 120 in the vehicle width direction are joined does not necessarily have to be the pillar panels 108a and 108b, may be directly joined to the side body panels 106a and 106b, or other parts. It may be joined to the vehicle body structural member.

  2 is an enlarged view of FIG. 1, FIG. 2 (a) is a view of the vicinity of the rearview mirror 112 of the vehicle body structure of FIG. 1 (a), and FIG. 2 (b) is a view of FIG. FIG. 2A is a view in which the roof lining 110 in FIG. 2A is not shown, and FIG. 2C is a view in which the room mirror 112 in FIG. 2B is not shown. As shown in FIG. 2 (a), in the vehicle body structure 100 of the present embodiment, a roof lining 110, which is a molded ceiling, is arranged further inside (inside the vehicle) of a roof inner 120 arranged inside the roof panel 102. Yes. In the vicinity of the center of the roof lining 110 in the vehicle width direction, a room mirror 112, which is an interior part arranged in the vehicle interior, is arranged.

  As shown in FIG. 2 (b), the rear mirror 112 is located on the outer side of the roof lining 110 of FIG. 2 (a) (the vehicle inner side), as shown in FIG. 2 (b). It is supported by. In the roof inner 120, a reinforcing bracket 130, which is a feature of the vehicle body structure 100 of the present embodiment, is disposed in a region that supports the rearview mirror 112.

  3 is a cross-sectional view of FIG. 2, FIG. 3 (a) is a cross-sectional view of AA of FIG. 2 (b), and FIG. 3 (b) is a cross-sectional view of the reinforcing bracket before elastic deformation. FIG.3 (c) is sectional drawing at the time of welding to the roof inner of a reinforcement bracket. In order to facilitate understanding, in FIG. 3C, the position of the reinforcing bracket 130 after elastic deformation is illustrated by a broken line.

  As shown in FIG. 3A, in the present embodiment, the roof inner 120 has an inclined surface 122 having an inclination corresponding to the inclination of the roof panel 102 in a side view, and the inclined surface 122 continuously from the inclined surface 122. And an extension surface 124 extending in the direction of the upper surface side. The roof inner 120 is joined to the pillar panels 108a and 108b on the outer side in the vehicle width direction as described above (see FIG. 1B).

  On the other hand, the roof inner 120 is joined to the roof panel 102 on the inner side in the vehicle width direction. Specifically, as shown in FIG. 3A, in the roof inner 120, an edge 120a (region B surrounded by a broken line in FIG. 1B) which is an end portion on the outer side (front side) in the vehicle front-rear direction. Are joined to the roof panel 102 by welding. This is because the front window 104 covers the end edge 120a, so that it is difficult to visually recognize the weld mark from the outside. On the other hand, in the roof inner 120, an edge 120b (region C surrounded by a two-dot chain line in FIG. 1B) that is an inner (rear side) end in the vehicle front-rear direction is a mastic sealer (not shown). ) Is applied to the roof panel 102. This is because when the end edge 120b of the roof inner 120 and the roof panel 102 are welded, the weld mark is visually recognized from the outside, resulting in poor appearance.

  Here, when assembling the roof inner 120, first, as described above, the edge 120a and the edge 120b in the vehicle front-rear direction are joined to the roof panel 102 by welding or bonding, respectively, in the vehicle width direction. The outer ends are welded to the pillar panels 108a and 108b. At the time of welding with the pillar panels 108a and 108b, the roof panel 102 to which the roof inner 120 is joined is turned over so that the roof inner 120 is positioned below the roof panel 102 as shown in FIG. In some cases, the edge 120b on the bonded side hangs down due to the weight of the roof inner 120, and only the edge 120a on the welded side is supported by the roof panel 102 (cantilever state). Then, the positional deviation of the roof inner 120 occurs, and the sealer applied to the end edge 120b flows down to cause a sealer defect.

  Therefore, in order to solve the problem that the above-described edge 120b hangs down, and consequently, the problems associated therewith, the reinforcing bracket 130 is attached to the inner side of the roof inner 120 in this embodiment. The reinforcing bracket 130 has higher rigidity than the roof inner 120, and has a first flat surface portion 132 and a second flat surface portion 134 that are continuous at the lower end in a side view, as shown in FIG. Of the two surfaces of the reinforcing bracket 130, the first flat surface portion 132 is welded to the extended surface 124 of the roof inner 120, and the second flat surface portion 134 is welded to the inclined surface 122 of the roof inner 120.

  FIG. 3B shows a single reinforcing bracket 130 before being attached to the roof inner 120, that is, a reinforcing bracket 130 before elastic deformation. As shown in FIG. 3B, in the reinforcing bracket 130 before being attached to the roof inner 120, the first flat surface portion 132 and the second flat surface portion 134 form an angle R1 in a side view. This angle R1 is smaller than an angle R2 (see FIG. 3C) formed by the inclined surface 122 and the extended surface 124 in a side view of the roof inner 120.

  When attaching the reinforcing bracket 130 to the roof inner 120, as shown in FIG. 3C, the second flat surface portion 134 of the single reinforcing bracket 130 is pushed downward from the position indicated by the solid line, thereby The reinforcing bracket 130 is elastically deformed so that R1 approaches the corner R2. Thereby, the 2nd plane part 134 of the reinforcement bracket 130 moves to the position shown with a broken line, and the extended surface 124, the 1st plane part 132, and the inclined surfaces 122 and 134 will be in the contact state. In this state, the roof inner 120 and the reinforcing bracket 130 are welded in the order of the welding point D and the welding point E. Thereby, the reinforcement bracket 130 is attached to the roof inner 120 as shown in FIG.

  As described above, the reinforcing bracket 130 is welded to the roof inner 120 in an elastically deformed state, whereby the reinforcing bracket 130 in an elastically denatured state, that is, a loaded state, is in an unloaded state (shape before elastic deformation). The reinforcing bracket 130 strongly interferes with the roof inner 120 due to the force of returning to the position, and the roof inner 120 is urged upward. As a result, the roof inner 120 is pushed upward, and the sag of the end edge 120b of the roof inner 120 is suppressed. Therefore, it is possible to prevent the occurrence of a sealer failure due to the displacement of the roof inner 120 due to the drooping, and consequently the flow of the sealer. Further, since the rigidity of the roof inner 120 is improved by the reinforcing bracket 130, the reinforcing effect by the roof inner 120 can also be improved.

  In particular, in the present embodiment, the reinforcing bracket 130 is welded to the roof inner 120 disposed in the vicinity of the end portion of the roof panel 102 on the vehicle front side. Thereby, the reinforcing bracket 130 can function as a mass damper that prevents the front window 104 joined to the roof inner 120 from being bent. Therefore, since it is not necessary to separately provide a mass damper in the vehicle body structure 100 of the present embodiment, a mass damper and thus a fixture used for fixing the mass damper are not necessary, and the number of parts can be reduced.

  The plate thickness of the reinforcing bracket 130 is preferably thicker than the plate thickness of the roof inner 120. As is clear from FIG. 2C, the reinforcing bracket 130 is a member having a width (lateral width) narrower than that of the roof inner 120. In order to urge the wide roof inner 120 upward with the narrow reinforcing bracket 130 as described above, it is desired to improve the rigidity of the reinforcing bracket 130.

  Therefore, by making the plate thickness of the reinforcing bracket 130 thicker than the plate thickness of the roof inner 120 as described above, the rigidity of the reinforcing bracket 130 is improved, and higher rigidity than that of the roof inner 120 can be obtained. Therefore, the force (repulsive effect) for urging the roof inner 120 upward can be further increased, and as a result, the sag of the edge 120b of the roof inner 120 can be more suitably suppressed. Moreover, the thick plate thickness of the reinforcing bracket 130 means that its own weight becomes heavy. Thereby, the reinforcement bracket 130 can be utilized as a weight, and the function as the mass damper described above can be further enhanced.

  In the present embodiment, the inclined surface 122 of the roof inner 120 and the second flat surface portion 134 of the reinforcing bracket 130 are half the length L (see FIG. 3C) of the second flat surface portion 134 in a side view. Welding is performed on the lower end side of the position. In other words, among the above-mentioned welding point D (welding point between the extension surface 124 and the first plane portion 132) and welding point E (welding point between the inclined surfaces 122 and 134), the welding point E is the second plane. It is located on the lower end side (continuous part 136 side) from the position that is half the length L of the part 134.

  With the above configuration, the inclined surface 122 and the second flat surface portion 134 are welded at a portion where the lower end portions of the first flat surface portion 132 and the second flat surface portion 134 are continuous, that is, in the vicinity of the continuous portion 136. Become. Therefore, the reinforcing bracket 130 attaches the roof inner 120 to the upper side as compared with the case where welding is performed above a position that is half the length L of the second flat surface portion 134 (when the welding location is separated from the continuous portion 136). It is possible to increase the power (resilience effect).

  Further, in the present embodiment, as described above, the reinforcing bracket 130 is welded to the region that supports the rearview mirror 112 in the roof inner 120 disposed in the vicinity of the end of the roof panel 102 on the vehicle front side (FIG. 2 ( b)). Accordingly, the reinforcing bracket 130 can also function as a room mirror reinforcement attached to the roof inner 120 in order to prevent chattering and rattling of the room mirror 112. Therefore, since it is not necessary to separately provide the rearview mirror reinforcement in the vehicle body structure 100 of the present embodiment, the rearview mirror reinforcement and, in addition, a fixture used for fixing the rearview mirror reinforcement are not required, and the number of parts can be further reduced.

  Note that the reinforcing bracket 130 described above has a portion where the lower ends of the first flat surface portion 132 and the second flat surface portion 134 are continuous as shown in FIG. The curvature may be larger than the continuous portion of the first plane portion 132 and the second plane portion 134. Thereby, the concentration (stress concentration) of the residual stress generated in the reinforcing bracket 130 on the continuous portion 136 by being welded to the roof inner 120 in an elastically deformed state can be suppressed.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used for a vehicle body structure in the vicinity of an end portion in the vehicle front-rear direction of a roof panel that forms the top surface of the vehicle body.

DESCRIPTION OF SYMBOLS 100 ... Car body structure, 102 ... Roof panel, 104 ... Front window, 106a ... Side body panel, 106b ... Side body panel, 108a ... Pillar panel, 108b ... Pillar panel, 110 ... Lou-flying, 112 ... Room mirror, 120 ... Roof inner 120a ... an edge, 120b ... an edge, 122 ... an inclined surface, 124 ... an extended surface, 130 ... a reinforcing bracket, 132 ... a first plane part, 134 ... a second plane part

Claims (5)

A vehicle body structure in the vicinity of an end portion in the vehicle front-rear direction of the roof panel constituting the top surface of the vehicle body,
An inclined surface extending in the vehicle width direction on the vehicle inner side of the roof panel and having an inclination corresponding to the inclination of the roof panel in a side view, and continuously from the inclined surface toward the upper surface side of the inclined surface A roof inner including an extended surface;
A rigidity bracket that is higher in rigidity than the roof inner and is welded to the inner side of the roof inner; and
The reinforcing bracket includes a first flat surface portion and a second flat surface portion which are welded to the extended surface and the inclined surface of the roof inner and are continuous at the lower end,
In a side view, an angle R1 formed by the first flat surface portion and the second flat surface portion of the reinforcing bracket before being attached to the roof inner is smaller than an angle R2 formed by the inclined surface and the extended surface of the roof inner,
The vehicle body structure, wherein the roof inner and the reinforcing bracket are welded in a state in which the reinforcing bracket is brought into contact with each other by elastically deforming the reinforcing bracket so that the corner R1 approaches the corner R2.   The inclined surface of the roof inner and the second flat surface portion of the reinforcing bracket are welded on the lower end side from a position that is half the length of the second flat surface portion in a side view. Item 1. The vehicle body structure according to Item 1.   The continuous portion of the first flat portion and the second flat portion of the reinforcing bracket has a larger curvature than the continuous portion of the first flat portion and the second flat portion of the roof inner. Car body structure.   4. The vehicle body structure according to claim 1, wherein a thickness of the reinforcing bracket is thicker than a thickness of the roof inner. 5. The roof inner is disposed in the vicinity of an end portion of the roof panel in front of the vehicle, and supports a rearview mirror disposed in a vehicle interior.
The vehicle body structure according to any one of claims 1 to 4, wherein the reinforcing bracket is disposed in a region of the roof inner that supports the room mirror.

Images