JP2013091373A5 - - Google Patents

Description

Body structure

  The present invention relates to a vehicle body structure including a reinforcing member that is bridged between members constituting a vehicle body and welded thereto.

  In a vehicle, it is necessary to ensure sufficient vehicle body strength to ensure steering stability and collision safety. In particular, since the vehicle body structure in the vicinity of the tire is easily subjected to loads such as a load from the road surface and a collision load, it is desired to secure a higher vehicle body strength. For this reason, various ideas have been conventionally made to improve the strength of the vehicle body near the tire. As an example, in Patent Document 1, a rear wheel house that is a body body in the vicinity of a tire and a rear pillar that is a skeleton member of the vehicle body are also referred to as a coupling member (hereinafter referred to as a reinforcement member). The rear structure of the vehicle to be connected is disclosed.

JP 2007-112386 A

  As in Patent Document 1, when a reinforcing member is stretched between members constituting a vehicle body (hereinafter referred to as a vehicle body constituting member in the present application) such as a rear wheel house and a rear pillar, and they are welded, generally, The other members are already welded to the vehicle body constituent members. In other words, the reinforcing member is stretched between the components already welded with other members and welded to them. For this reason, in the reinforcing member, priority is given to securing the work area when welding it to the vehicle body component first, and as a result, the necessary reinforcing strength cannot be sufficiently satisfied only by devising the shape. was there.

  In addition, many members are arranged around the reinforcing member such as a vehicle body constituting member and a member already welded thereto. In order to secure an installation space in such a peripheral layout, the reinforcing member may be provided with unevenness by partially inflating in the vehicle width direction. Such a concavo-convex shape is a so-called waste shape, which has a purpose of securing an arrangement space, and has little effect of improving the vehicle body strength, which is the original purpose of the reinforcing member.

  Furthermore, when the concavo-convex shape is formed by inflating the reinforcing member in the vehicle width direction, the cargo space is thereby narrowed, which may affect the occupant's usability. In addition, if the shape of the reinforcing member becomes complicated due to unevenness, it is difficult to obtain a sufficient welded area (welded area) with the vehicle body component member, and when a large load is applied to the welded part due to unexpected external force during traveling There was a risk that the weld would peel off.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a vehicle body structure capable of performing a welding operation satisfactorily while ensuring a sufficient reinforcing effect without causing a complicated shape. .

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 comprising a reinforcing member is stretched between the vehicle body component member constituting the vehicle body is welded to, the The vehicle body structure further includes a back pillar that forms a skeleton at the rear of the vehicle body, and a rear wheel house near the rear wheel of the vehicle body, and the back pillar includes a pillar outer that forms a vehicle outer surface and a pillar inner that forms a vehicle inner surface. The reinforcing member is spanned between the pillar outer of the back pillar and the pillar inner and the rear wheel house to connect them, and the pillar outer is welded to one of the front and back surfaces of the reinforcing member, and the pillar inner is connected to the other. It is welded.

The reinforcing member includes a flat surface that is linearly disposed between the vehicle body constituent members, a first bent portion that bends from the long back pillar side of the flat surface , and further extends from the first bent portion and is inclined with respect to the flat surface . and a to have inclined surfaces, may one pillar outer panel or pillar inner are welded to the inclined surface.

The reinforcing member includes a second bend that is bent from an end portion of the inclined surface extends further from the second bend, further comprising an extension surface which is substantially parallel to the flat surface, the pillar outer panel or the other extended surface of the pillar inner panel It is good to be welded to.

The cross-sectional shape of the reinforcing member in the short direction is a hat shape with a flat surface as the top surface, and the reinforcing member has a flange corresponding to the hat-shaped brim portion substantially on the flat surface that is the hat-shaped top surface. Preferably, one of the pillar outer and the pillar inner is welded to the flange, and the other is welded to at least one or both of the inclined surface and the extended surface.

  The reinforcing member may be welded to the center of the pillar outer in the short direction.

  By making the welding location a surface like the inclined surface or the extended surface of the above configuration, a sufficient welding area can be obtained, and high welding strength can be ensured. In addition, because the welded part is a surface and the vehicle body structural member and the reinforcing member are in contact with each other, the load applied through the reinforcing member, such as the load from below applied from the road surface and the load at the time of collision from the rear, is configured in the vehicle body. The member can be received by the surface. In other words, since the load can be released to the vehicle body constituent member on the surface, a high reinforcing effect can be obtained, and the impact strength and the vehicle body structural strength (running longitudinal stability) can be improved. Furthermore, since the load applied through the reinforcing member is received by the surface of the vehicle body component member, not only the linear load but also the strength against the load in the rotational direction, that is, the torsion, can be increased, thereby further improving the reinforcing effect. It is possible. In particular, since the extension surface is welded to the vehicle body structural member in a state of extending in parallel to the flat surface, it is possible to suitably prevent welding peeling due to a torsional load received by the reinforcing member.

  Further, according to the above configuration, since the first bent portion and the second bent portion are provided, the inclined surface is inclined with respect to the flat surface, the extended surface is substantially parallel to the flat surface, and the angle of these surfaces is Different. The extension surface further extends from the second bent portion provided at the end portion of the inclined surface, that is, the extension surface is disposed ahead of the inclined surface in the longitudinal direction of the reinforcing member. Are in different positions in the longitudinal direction. In this way, by making the positions and inclinations of the inclined surface and the extended surface different, it is possible to sufficiently secure a welding work space (assembly area) when welding the members to them, thereby improving workability. Can be made.

The cross-sectional shape in the short direction of the reinforcing member is a hat shape having a flat surface as a top surface . As a result, it is possible to increase the rigidity of the reinforcing member, particularly in the vicinity of the flat surface, thereby improving the reinforcing strength. Moreover, since it is a simple shape called a hat shape, installation is easy even in the peripheral layout, and problems due to the complicated shape do not occur.

In the reinforcing member, the flange corresponding to the hat-shaped brim portion is substantially parallel to the flat surface which is the top surface of the hat shape, and the extension surface extends from the inclined surface in the longitudinal direction of the top surface. Includes extended areas . According to this configuration, in the hat-shaped reinforcing member, the inclined surface is located in the hat portion (head), and the extended surface is located in the flange portion (head portion) of the hat. Therefore, the extended surface and the inclined surface have different positions in the lateral direction in addition to the above-described angle and longitudinal position. Thereby, the further adjustment of a welding position is attained and the welding compatibility (easiness of welding) of a reinforcement member improves.

The vehicle body structure further includes a back pillar constituting a skeleton at the rear of the vehicle body and a rear wheel house in the vicinity of the rear wheel of the vehicle body, and the reinforcing member is spanned between the back pillar and the rear wheel house and welded thereto. . As described above, since it is desired to secure higher vehicle body strength in the vicinity of the rear wheel (rear tire) provided at the rear portion of the vehicle body, the present invention can be suitably used.

The above-described back pillar has a pillar outer that constitutes a surface on the outside of the vehicle and a pillar inner that constitutes a surface on the inside of the vehicle. The pillar outer is welded to one of the inclined surface and the extension surface, and the pillar inner is welded to the other. that. According to such a configuration, the load applied to the rear wheel house is transmitted to the back pillar at two locations of the inclined surface and the extended surface in the reinforcement. Thereby, since the load is distributed in the back pillar, it is possible to suppress welding peeling and deformation due to the concentration of the load, and it is possible to further improve the reinforcing effect.

In order to solve the above-described problems, a typical structure of a vehicle body structure according to the present invention is a vehicle body structure including a reinforcement member that is spanned between vehicle body components constituting the vehicle body and welded to the vehicle body structure. The member includes a flat surface linearly arranged between the vehicle body constituent members, a first bent portion bent from one longitudinal end of the flat surface, a vehicle further extending from the first bent portion, and a vehicle different from the longitudinal direction of the flat surface. An inclined surface inclined in the width direction or the vehicle height direction, a second bent portion bent from an end portion of the inclined surface, an extended surface further extending from the second bent portion and substantially parallel to the longitudinal direction of the flat surface And welding with different vehicle body components on the inclined surface and the extended surface. Even with this configuration, the same effect as described above can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle body structure which can perform a welding operation favorably can be provided, without incurring complication of a shape and ensuring sufficient reinforcement effect.

It is a figure which illustrates the vehicle body structure concerning a 1st embodiment. It is the elements on larger scale of FIG. FIG. 3 is a cross-sectional view of FIG. 2. It is a figure which shows the detail of the reinforcement of FIG. It is a figure which illustrates the vehicle body structure concerning 2nd Embodiment. It is detail drawing of the vehicle body structure of 2nd Embodiment.

  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.

(First embodiment)
FIG. 1 is a diagram illustrating a vehicle body structure according to the first embodiment. FIG. 1A is an external perspective view of a rear part of the vehicle body, and FIG. 1B is a rear vehicle body structure shown in FIG. 1 is a perspective view of a state in which a side body outer 104 and a pillar outer 122 are removed from 100. FIG. FIG. 2 is a partially enlarged view of FIG. In order to facilitate understanding, FIG. 2 illustrates the pillar outer 122 by a two-dot chain line, and shows a state in which the pillar inner 124 and the reinforcement 130 located behind the pillar outer 122 are transmitted.

  As shown in FIG. 1, in the present embodiment, a case where the present invention is applied to a vehicle body structure above a rear tire 102 (illustrated by a broken line), that is, a vehicle body rear structure 100 will be described as an example. However, the present invention is not limited to this, and the present invention can also be applied to a vehicle body structure including a reinforcing member that spans between other vehicle body structural members (sheet metal members).

In the vehicle body rear structure 100 shown in FIGS. 1 and 2, a wheel house 110 is provided inside the side body outer 104, which is an exterior member, and is disposed above and supports the rear tire 102.

3 is a cross-sectional view of FIG. 2, FIG. 3 (a) is a cross-sectional view taken along line AA of FIG. 2 (a), and FIG. 3 (b) is a cross-sectional view taken along line BB of FIG. is there. In FIG. 3, the side body outer 104 not shown in FIG. 2A is indicated by a one-dot chain line. As shown in FIG. 3, the wheel house 110 includes a wheel house outer 112 and a wheel house inner 114 that constitute the vehicle outer side and the vehicle inner side, respectively. A back pillar 120 that bears the skeleton of the vehicle body rear structure 100 is provided behind the wheel house 110. As shown in FIG. 3, the back pillar 120 includes a pillar outer 122 and a pillar inner 124 that configure the vehicle outer side and the vehicle inner side, respectively.

In the vehicle body rear structure 100, when the distance between the wheel house 110 and the back pillar 120 is long, the vehicle body strength tends to be insufficient. For this reason, the wheel house 110 and the back pillar 120 may behave differently during traveling, leading to a reduction in steering stability. Therefore, in order to improve the strength of the vehicle body rear structure 100, a reinforcement 130 is provided as a reinforcing member that is bridged between the wheel house 110, which is a member constituting the vehicle body, and the back pillar 120 and is welded thereto. It is done.

As shown in FIG. 3, the reinforcement 130 is joined at one end near the back pillar 120 by welding, and at the other end near the wheel house 110 by welding. Specifically, the wheel house 110 is welded near the other end of the reinforcement 130 after the wheel house inner 114 and the wheel house outer 112 are welded. Thereafter, the back pillar 120 to which the pillar outer 122 and the pillar inner 124 have already been welded on the rear side of the vehicle body and the one end portion of the reinforcement 130 are welded.

As described above, the wheel house 110 and the back pillar 120 are in a state in which the members constituting them are already welded to each other, and other vehicle body structural members may be further welded to them. For this reason, what is required of the reinforcement 130 is not only the effect of improving the vehicle body strength, that is, the reinforcing effect, but it is not only that. That is, it is also required to secure a welding work area in which the welding work can be satisfactorily performed even in a situation where vehicle body structural members such as the wheel house 110 and the back pillar 120 are already arranged. In order to meet such a demand, the vehicle body rear structure 100 according to the present embodiment is characterized by the shape of the reinforcement 130.

  4 is a diagram showing details of the reinforcement 130 of FIG. 2, FIG. 4A is a front perspective view of the reinforcement 130, and FIG. 4B is a rear perspective view of the reinforcement 130. FIG. 4C is a cross-sectional view taken along the line C-C in FIG. The reinforcement 130 shown in FIG. 4 (a) has a hat-shaped main body 132 having a cross section in the short side direction protruding outward from the vehicle body as shown in FIG. 4 (c).

As for the main body 132, the flat surface 132a linearly arrange | positioned between vehicle body structural members (between the wheel house 110 and the back pillar 120 in this embodiment) is a hat-shaped top surface. The main body 132 has a side surface 132b continuous from the edge in the short direction of the flat surface 132a, and a flange 132c substantially parallel to the flat surface 132a that is a hat-shaped top surface is continuous from the side surface 132b. .

  By making the main body 132 of the reinforcement 130 into a hat shape as described above, the rigidity of the reinforcement 130 and thus the reinforcing strength can be obtained without providing a useless uneven shape as in the prior art, that is, without complicating the shape. Can be improved. In particular, unlike the present embodiment, since the hat shape protrudes toward the outside of the vehicle body, the cargo space is not narrowed, so that the occupant's usability is not hindered. In addition, since the reinforcement 130 has a simple shape as described above, it is possible to improve the formability when the part shape is processed.

  The reinforcement 130 is further extended from the first bent portion 134 toward the inner side of the vehicle body from one longitudinal end of the flat surface 132a of the hat-shaped main body 132, and further extended from the first bent portion 134. It has an inclined surface 136 that is inclined in a vehicle width direction or a vehicle height direction (in the present embodiment, inside the vehicle body) different from the direction. A second bent portion 137 that is bent therefrom is formed at the end of the inclined surface 136, and an extended surface 138a that is substantially parallel to the longitudinal direction of the flat surface 132a further extends from the second bent portion 137. Yes.

  In the reinforcement 130 according to the present embodiment, the hat-shaped main body 132 is provided with the flange 132c substantially parallel to the flat surface 132a as described above, and the flange 132c is formed on the flat surface 132a (hat-shaped top surface). ) Has an extended surface 138b which is a region extending to the tip of the inclined surface 136 in the longitudinal direction. That is, in this embodiment, the extended surface 138 is comprised by the extended surfaces 138a and 138b.

In addition, in the main body 132 of the reinforcement 130, a rising portion 133 is erected from a side edge on the side where the inclined surface 136 and the extension surface 138 are not provided. In the longitudinal direction of the reinforcement 130, in the vicinity of the end portion on the side to which the wheel house 110 is welded (the other end portion), as shown in FIG. 3, the wheel house 110 is attached to the rising portion 133. It is welded from the back side (the vehicle interior).

  On the other hand, in the vicinity of the end portion on the side to which the back pillar 120 is welded (in the vicinity of one end portion), the reinforcement 130 that is a reinforcing member has different vehicle body components on the inclined surface 136 and the extended surface 138 (this embodiment). , Welding with the pillar outer 122 and the pillar inner 124) is performed. Specifically, first, the pillar inner 124 is welded to the extended surface 138 from the back side (in the vehicle interior) of the reinforcement 130 (see FIG. 3B). At this time, in this embodiment, the pillar inner 124 is welded to the extension surface 138b provided on the extension of the flange 132c among the extension surfaces 138a and 138b constituting the extension surface 138 as described above. Thereafter, the pillar outer 122 is welded to the inclined surface 136 from the front side of the reinforcement 130 (outside the passenger compartment) (see FIG. 3A).

  That is, in the welding of the vehicle body constituent member to the reinforcement 130 of the present embodiment, the welding is performed on the inclined surface 136 after the welding is performed on the extended surface 138 (strictly, the extended surface 138b). Thereby, since the inclined surface 136 is positioned by the welding performed on the extended surface 138 previously performed, the welding operation on the inclined surface 136 can be performed satisfactorily and easily. However, such a configuration is merely an example, and it is naturally possible to perform welding on the extended surface 138 after welding on the inclined surface 136. In this case, workability at the time of welding on the extended surface 138 is also possible. Can be improved.

  Since the first bent portion 134 and the second bent portion 137 are provided as described above, the inclined surface 136 is inclined with respect to the flat surface 132a of the main body 132, whereas the extended surface 138 is the main body. Since they are substantially parallel to the flat surface 132a of 132, they are not parallel to each other. Further, in the longitudinal direction of the reinforcement 130, the extended surface 138 is provided ahead of the inclined surface 136 (near the end), so that they are in different positions in the longitudinal direction. Furthermore, since the extended surface 138 is located on the inner side of the vehicle body with respect to the inclined surface 136, they are in different positions in the vehicle width direction.

  By making the angle and position of the inclined surface 136 and the extended surface 138 different as described above, the extended surface 138 does not interfere with a jig (not shown) such as a welding gun used when welding the inclined surface 136, The reverse is also true. Therefore, for example, when the pillar outer 122 is welded to the inclined surface 136 of the reinforcement 130 after the pillar inner 124 is welded, the extension surface 138 does not get in the way, and a sufficient work space (assembly area) for welding is ensured. Can be performed efficiently.

  In particular, in the present embodiment, since the reinforcement 130 has a hat shape, the inclined surface 136 is located in the hat portion (head), and the extended surface 138b is located in the flange portion (head portion) of the hat. For this reason, the extended surface 138b and the inclined surface 136 have different positions in the lateral direction in addition to the above-described angle and longitudinal position. Thereby, the welding position can be further adjusted, and the weldability of the reinforcement 130 can be improved.

  Further, according to the reinforcement 130 of the present embodiment, the pillar outer 122 and the pillar inner 124 are welded on the inclined surface 136 and the extended surface 138, that is, the welded portion is a surface, so that a sufficient welding area can be obtained. Therefore, since the welding strength between the back pillar 120 and the reinforcement 130 can be improved, it is possible to suitably prevent welding peeling.

Furthermore, as described above, if the welding location is a surface, the vehicle body structural member (the back pillar 120 in the present embodiment) and the reinforcement 130 are in contact with each other. For this reason, when a load such as a load from below applied from a road surface (not shown) or a load at the time of a collision from the rear is applied to the wheel house 110, the back pillar 120 passes the load through the reinforcement 130. Thus, a high reinforcing effect is obtained, and as a result, it is possible to improve the impact strength and the vehicle body structural strength (running stability).

In particular, in the present embodiment, in the reinforcement 130, the load applied via the wheel house 110 is transmitted to the back pillar 120 at two locations of the inclined surface 136 and the extension surface 138 (extension surface 138b). As described above, since there are two receiving positions, irregular loads and intensive loads applied to the vehicle body rear structure 100 can be suitably distributed, and the reinforcing effect can be further enhanced.

  In addition, since the welded portion between the back pillar 120 and the reinforcement 130 is a surface, not only a linear load but also a strength against a load in the rotational direction, that is, a twist can be increased. Specifically, when the back pillar and reinforcement are welded at one point as in the past, a reinforcing effect can be obtained against the load acting in the longitudinal direction of the reinforcement, The reinforcing effect is insufficient for a load in a direction in which the force is peeled off from the back pillar, that is, a twisted load.

On the other hand, as shown in FIG. 2, the welded portion is a surface as in the present embodiment, so that the welded portion between the wheel house 110 and the reinforcement 130, that is, the rising portion 133 (see FIG. 4) is the center. Even if a rotating twisted load (shown by arrows 192a and 192b) is applied to the reinforcement 130, the back pillar 120 and the reinforcement 130 are not easily separated from each other, and a high reinforcing effect can be obtained. In particular, the extension surface 138 of the present embodiment is welded to the vehicle body structural member (pillar inner 124) in a state of extending in parallel to the flat surface 132a, so that the weld 130 is peeled off due to the torsional load received by the reinforcement 130. Is preferably prevented.

  As described above, the reinforcement 130 has the pillar outer 122 disposed outside the vehicle body and the pillar inner 124 disposed inside the vehicle body (see FIG. 3). As a result, a load in the direction in which the inclined surface 136, which is a welded portion with the pillar outer 122, is to be peeled from the reinforcement 130 (a load toward the inside of the vehicle body, illustrated by an arrow 194 in FIG. 3A). Even if this is applied, the reinforcement 130 is welded to the pillar inner 124 on the extended surface 138, so that the reinforcement 130 is supported by the reinforcement 130 and the movement inward of the vehicle body is suppressed. On the other hand, a load is applied to the reinforcement 130 in a direction in which the extended surface 138, which is a welded portion with the pillar inner 124, is to be peeled (a load toward the outside of the vehicle body, illustrated by an arrow 196 in FIG. 3B). However, since the reinforcement 130 is welded to the pillar outer 122 on the inclined surface 136, the reinforcement 130 is supported by the reinforcement 130 and the movement outward of the vehicle body is suppressed.

  In other words, according to the configuration of the present embodiment, even if one of the inclined surface 136 and the extension surface 138 that are welded portions in the reinforcement 130 is subjected to a load for peeling it, the load moves in the peeling direction. Can be suppressed by the other welding location, so that the joint strength and thus the reinforcement strength can be improved. By improving the reinforcing strength in this way, it is possible to reduce the number of welding points as compared with the conventional case and contribute to shortening the working time.

  As described above, according to the vehicle body structure (vehicle body rear structure 100) according to the first embodiment, it is possible to sufficiently secure welding work areas when members are welded to the respective structures, and work efficiency can be improved. . In addition, since the welded portion is a surface such as the inclined surface 136 and the extended surface 138, a sufficient welding area can be obtained, so that a high welding strength can be secured, and it is applied through the reinforcing member (reinforcement 130). Since the vehicle body constituent member (back pillar 120) can receive the load by the surface, a high reinforcing effect can be obtained particularly against the load (twist) in the rotation direction. Therefore, it is possible to perform the welding work satisfactorily while ensuring a sufficient reinforcing effect without causing a complicated shape.

  The inclined surface 136 is preferably along the inclination of the region welded to the inclined surface 136 in the pillar outer 122. As a result, the welding strength between the pillar outer 122 and the reinforcement 130 can be improved, the load transmission efficiency can be increased, and a higher reinforcing effect can be obtained. Preferably, the extension surface 138 is also along the slope of the region welded to the extension surface 138 in the pillar inner 124. As a result, the above-described advantages can be obtained also at the welded portion between the pillar inner 124 and the reinforcement 130, and the reinforcement effect can be further improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 5 is a diagram illustrating a vehicle body structure (hereinafter referred to as a vehicle body rear structure 200) according to the second embodiment. FIG. 5A is a side view of the vehicle body structure of the second embodiment at a position corresponding to FIG. 2, and FIG. 5B is a rear view of FIG. FIG. 6 is a detailed view of the vehicle body structure of the second embodiment. FIG. 6A is a perspective view of a reinforcement 230 that is a reinforcing member of the second embodiment, and FIG. 6B is a sectional view taken along the line DD in FIG. 5A. These are EE sectional views of Drawing 6 (b). In the vehicle body rear structure 200 according to the second embodiment, components having the same functions and configurations as those described in the vehicle body rear structure 100 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted. .

In the vehicle body rear structure 100 of the first embodiment, the reinforcement 130 has a hat shape, but such a configuration is only an example, and the present invention is not limited thereto. As another shape of the reinforcement that is the reinforcing member, a shape that linearly connects the wheel house 110 that is the vehicle body component and the back pillar 120 like the vehicle body rear structure 200 of the second embodiment shown in FIG. That is, the reinforcement 230 may be a linear member.

As shown in FIG. 6B, the reinforcement 230 also has a flat surface 232a that is linearly disposed between the vehicle body constituent members (between the wheel house 110 and the back pillar 120). A first bent portion 234 that is bent therefrom is provided at one end of the longitudinal direction. From the first bent portion 234, an inclined surface 236 that is inclined in a vehicle width direction or a vehicle height direction different from the longitudinal direction of the flat surface 232a further extends, and bends to an end portion of the inclined surface 236 therefrom. A second bent portion 237 is provided. An extended surface 238 that extends substantially parallel to the longitudinal direction of the flat surface 232a further extends from the second bent portion 237.

In reinforcement 230, flange 240 is erected from the end of flat surface 232a that does not have first bent portion 234. In the longitudinal direction of the reinforcements 130, the end portion of the side having the flange 240, as shown in FIG. 6 (a), such a flange 240, the wheel house 110 is the rear side (auto reinforcements 230 Welded from inside.

  On the other hand, in the vicinity of the end portion on the side to which the back pillar 120 is welded, first, the pillar inner 124 is welded to the extension surface 238 from the back surface side (the vehicle interior side) of the reinforcement 130. Thereafter, the pillar outer 122 is welded to the inclined surface 236 from the front side of the reinforcement 130 (outside the passenger compartment). Also in the present embodiment, the reinforcement 230 includes the first bent portion 234 and the second bent portion 237, and thus the inclined surface 236 and the extended surface 238 have different angles and positions. For this reason, also in the vehicle body rear part structure 200, a work space (assembly area) for welding can be sufficiently secured as described above, and work efficiency during welding can be improved.

  In the vehicle body rear structure 200, the pillar outer 122 and the pillar inner 124 are welded to the reinforcement 230 by the inclined surface 236 and the extension surface 238, so that the welding portion becomes a surface. Therefore, as described above, it is possible to improve the welding strength between the back pillar 120 and the reinforcement 230, and thus the reinforcing effect, and it is possible to increase the impact strength and the vehicle body configuration strength (running stability).

  Furthermore, in the present embodiment, the reinforcement 230 is provided with a side surface 232 b at the edge in the longitudinal direction of the region other than the extended surface 238 and the flange 240. Thereby, since the cross section of the reinforcement 230 becomes a U-shape as shown in FIG. 6C, it is possible to obtain high rigidity even if the reinforcement 230 is a linear member. However, such a shape is merely an example, and other shapes are not excluded. The reinforcement 230 may be a plate-like member not provided with the side surface 232b, or may be configured to have a flange (not shown) that is further erected from the side surface 232b so that the cross section has a hat shape. is there.

  As described above, in both the reinforcement 130 of the first embodiment and the reinforcement 230 of the second embodiment, the extension surfaces 138 and 238 are directed away from the flat surfaces 132a and 232a. It extends. However, the present invention is not necessarily limited to this, and the extension surfaces 138 and 238 may extend in a direction of turning back toward the flat surfaces 132a and 232a. Further, in the reinforcement 130 of the first embodiment, the hat shape of the main body 132 has a cross section in the short direction protruding outward from the vehicle body, but this is not limited to this, and the hat shape of the main body 132 is short. The cross section in the hand direction may protrude toward the inside of the vehicle body.

  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 including a reinforcing member that is stretched between members constituting a vehicle body and welded thereto.

DESCRIPTION OF SYMBOLS 100 ... Car body rear structure, 102 ... Rear tire, 104 ... Side body outer, 110 ... Wheel house , 112 ... Wheel house outer, 114 ... Wheel house inner, 120 ... Back pillar, 122 ... Pillar outer, 124 ... Pillar inner, 130 ... Rinforce , 132 ... main body, 132a ... flat surface, 132b ... side surface, 132c ... flange, 133 ... rising portion, 134 ... first bent portion, 136 ... inclined surface, 137 ... second bent portion, 138 / 138a / 138b ... extended Surface, 192a, 192b, 194, 196 ... Arrow, 200 ... Rear body structure, 230 ... Reinforcement, 232a ... Flat surface, 232b ... Side surface, 234 ... First bent portion, 236 ... Inclined surface, 237 ... Second bent Part, 238 ... extended surface, 240 ... flange

Claims (5)

A vehicle body structure comprising a reinforcing member that is bridged between the vehicle body constituting members constituting the vehicle body and welded thereto,
The vehicle body structure further includes a back pillar constituting a skeleton at the rear of the vehicle body, and a rear wheel house near the rear wheel of the vehicle body,
The back pillar has a pillar outer that constitutes a vehicle outer surface and a pillar inner that constitutes a vehicle inner surface,
The reinforcing member is spanned between the pillar outer and pillar inner of the back pillar and the rear wheel house to connect them,
A vehicle body structure characterized in that the pillar outer is welded to one of a front surface and a back surface of the reinforcing member, and the pillar inner is welded to the other. The reinforcing member is
A flat surface arranged linearly between the vehicle body components;
A first bent portion bent from the back pillar side of the length of the flat surface;
And an inclined surface that extends further inclined with respect to the flat surface from said first bent portion,
The vehicle body structure according to claim 1, wherein one of the pillar outer and the pillar inner is welded to the inclined surface. The reinforcing member is
A second bent portion bent from an end of the inclined surface;
Further extending from the second bend, further comprising an extension surface which is substantially parallel to said flat surface,
The vehicle body structure according to claim 2, wherein the other of the pillar outer and the pillar inner is welded to the extension surface. The cross-sectional shape in the short direction of the reinforcing member is a hat shape with the flat surface as the top surface,
In the reinforcing member, a flange corresponding to the hat-shaped brim portion is substantially parallel to a flat surface that is the top surface of the hat-shape.
The one of the pillar outer and the pillar inner is welded to the flange, and the other is welded to at least one or both of the inclined surface and the extended surface . Body structure.   The vehicle body structure according to any one of claims 1 to 4, wherein the reinforcing member is welded to a center of the pillar outer in a short direction.