JP5639936B2 - Body side structure - Google Patents

Description

  The present invention relates to a vehicle body side structure of an automobile, and more particularly to a structure around a rear end portion of a side sill.

  2. Description of the Related Art In a vehicle body side structure, a side sill that extends in the front-rear direction at the lower part on both sides of a vehicle body is formed by a side sill inner panel and a side sill outer panel that have substantially U-shaped cross sections with openings facing each other. Such a side sill has a cylindrical shape with an open rear end, and a rear inner panel (a quarter inner panel) or a rear outer panel (a quarter panel) in which a wheel house portion for accommodating a rear wheel is formed is attached to the rear portion. . The rear end opening of the side sill communicates with the wheel house part and is closed by an end plate (for example, Patent Document 1). The end plate is joined to the side sill, the rear inner panel, and the rear outer panel to form a part of the wheel house inner portion.

JP 2003-341557 A

  In the vehicle body side structure as described above, after the side sill, the rear inner panel, and the rear outer panel are joined together, the end plate is inserted into the recess defined by the rear inner panel and the rear outer panel from the rear side of the side sill (wheel house side). It is assembled by welding to the fitting, side sill, rear inner panel, rear outer panel and the like. Therefore, the end plate cannot be joined to the rear outer panel in advance to form an assembly. That is, there is a problem that the end plate cannot be sub-assembled to the rear outer panel, and the end plate must be joined independently at the time of assembling the vehicle body, which increases the number of work steps. Further, in order to make a subassembly, it is necessary to divide the end plate, which causes a problem that the coupling efficiency is deteriorated.

  The present invention has been made in view of the above background, and enables the end plate to be sub-assembled, and improves the coupling efficiency of the components of the vehicle body side structure to improve the shock absorption capacity. Let it be an issue.

  In order to solve the above-described problems, the present invention is a vehicle body side structure, and has an approximately U-shaped cross section in which the opening faces outward in the vehicle width direction, and extends in the vehicle longitudinal direction on both sides of the vehicle body. The side sill inner panel (3) has an approximately U-shaped cross section in which the opening faces inward in the vehicle width direction, is extended in the vehicle front-rear direction and is joined so that the side sill inner panel and the openings face each other. A side sill outer panel (4) forming a cylindrical side sill having an open rear end together with the side sill inner panel, a rear frame (18) extending from the rear end upper part of the side sill inner panel to the rear of the vehicle body, and the rear An inner wall portion (26) extending upward from the frame to form the inner surface of the vehicle body side portion, a wheel house recess (29) recessed inward in the vehicle width direction on the inner wall portion, and the wheel housing of the inner wall portion A rear inner panel (25) having a wheel house inner portion (27) including a wheel house inner flange portion (30) projecting outward in the vehicle width direction along the periphery of the recess, and the side sill outer A rear outer panel (31) extending rearward and upward from the rear end to form the outer surface of the side of the vehicle body, and an end plate (13) closing the rear end opening of the side sill, A main body portion (55) extending in the vertical direction and the vehicle width direction, an upper joint piece (57) projecting upward on the vehicle outer side portion of the upper edge of the main body portion, and a vehicle inner edge of the main body portion A vehicle-side joint piece (58) bent and raised rearward along, and a vehicle-side joint piece (59) bent and raised rearward along the vehicle-side outer edge of the main body, A piece is the rear outer panel or the side The vehicle interior joint piece is joined to the rear frame, and the upper joint piece is disposed on the front side of the wheel house inner flange, while the vehicle interior portion ( 56) is arranged on the vehicle outer surface side of the recess of the wheel house. Here, the vehicle exterior surface side of the wheel house recess refers to the surface side facing the rear wheel.

  According to this configuration, the end plate can be assembled to the rear inner panel from the vehicle width direction. Therefore, by joining the end plate to the rear outer panel in advance, the end plate and the rear outer panel can be assembled at the same time when the rear outer panel and the rear inner panel are assembled. Further, since the end plate is hooked to the wheel house inner flange portion and the wheel house recess of the rear inner panel at the upper portion so as not to move back and forth, the integrity of the end plate and the rear inner panel is improved. Thereby, the coupling efficiency of the structural member of a vehicle body side part structure can be improved, and an impact absorption capability can be improved.

  In another aspect of the present invention, a side sill stiffener (6) as a reinforcing material extending in the front-rear direction is interposed between the side sill inner panel and the side sill outer panel. And is joined to the front surface of the main body of the end plate.

  According to this configuration, the side sill stiffener, the rear inner panel and the rear outer panel are joined via the end plate, and the rigidity of the vehicle body side structure is enhanced.

  In another aspect of the present invention, a shock absorbing member (8) formed in a box shape is disposed between the side sill inner panel and the side sill outer panel, and the shock absorbing member is the main body of the end plate. It is characterized by being joined to the front surface of the part.

  According to this configuration, by joining the impact absorbing member to the end plate, the coupling efficiency of the constituent members of the vehicle body side structure can be increased, and the impact absorbing ability can be improved.

  In another aspect of the present invention, a plate member (7) extending in the vertical direction is interposed between the side sill inner panel and the side sill outer panel, and the plate member includes the side sill stiffener and the shock absorbing member. It is joined to the member.

  According to this configuration, by further joining the impact absorbing member to the plate member, the coupling efficiency of the constituent members of the vehicle body side structure can be increased, and the impact absorbing ability can be increased.

  Another aspect of the present invention is characterized in that the end plate is further joined to the side sill inner panel in the vehicle interior joint piece.

  According to this configuration, by joining the end plate to the side sill inner and the rear frame, the coupling efficiency of the structural members of the vehicle body side structure can be increased, and the impact absorption capability can be increased.

  Another aspect of the present invention is characterized in that the end plate is joined to the vehicle outer side surface of the wheel house recess in the vehicle inner side portion of the upper edge of the main body.

  According to this configuration, it is possible to increase the coupling efficiency of the vehicle body side structure and to increase the shock absorption capability.

  According to the above configuration, the end plate can be sub-assembled to the rear outer panel, and the impact absorbing ability of the vehicle body side structure can be enhanced.

An exploded perspective view of the left side of the vehicle body as viewed from the outside of the vehicle An exploded perspective view of the left side of the vehicle body as viewed from the inside of the vehicle An exploded perspective view of the main part of the vehicle body side structure viewed from the outside of the vehicle with the side sill outer panel removed. Perspective view showing end plate An exploded perspective view of the outer panel assembly and the floor side assembly separated from each other and viewed from the rear and below the vehicle body The exploded perspective view which shows the process at the time of assembling an outer panel assembly and a floor side assembly A perspective view of the vehicle body side structure as viewed from the rear and below the vehicle body The perspective view which looked at the principal part of the body side structure from the outside of the vehicle with the side sill outer panel removed A perspective view of the vehicle body side structure as viewed from the rear and below the vehicle body XX sectional view of FIGS. 7 and 8

  Hereinafter, an embodiment to which a vehicle body side part structure of the present invention is applied will be described in detail with reference to the drawings. In the following description, the forward direction of the vehicle body is defined as the front, the left / right direction is determined based on this, and the upper vertical direction is defined as the upper direction. In addition, since the vehicle body described below is generally left-right symmetric, only the left half will be described, and description of the same configuration of the right half will be omitted. Further, each element of the vehicle body 1 described below is formed by press forming a steel plate unless otherwise specified.

  As shown in FIGS. 1 and 2, a vehicle body 1 of a four-door vehicle has a pair of left and right side sills 2 extending in the front-rear direction on both lower side portions. The side sill 2 includes a side sill inner panel 3 that extends in the front-rear direction and constitutes the vehicle interior portion, and a side sill outer panel 4 that constitutes the vehicle exterior portion. In the present embodiment, the rear end portion of the side sill inner panel 3 is configured as a separate member as the side sill extension 5. However, in another embodiment, the side sill inner panel 3 and the side sill extension 5 may be formed as a single member. Good.

  The side sill inner panel 3 and the side sill extension 5 each have a hat shape in which a cross-sectional shape opens toward the vehicle outer side, and flanges are provided at upper and lower edges thereof. The side sill outer panel 4 has a hat shape in which a cross-sectional shape opens toward the inside of the vehicle and has flanges at upper and lower edges. The side sill inner panel 3, the side sill extension 5, and the side sill outer panel 4 form a cylindrical side sill 2 having upper and lower flanges joined together to form a closed cross section and having an opening at the rear end.

  As shown in FIGS. 2 and 3, a side sill stiffener 6 extending between the side sill inner panel 3, the side sill extension 5, and the side sill outer panel 4 in the front-rear direction is interposed. The side sill stiffener 6 has a cross-sectional shape that opens toward the inside of the vehicle and has a hat shape having flanges at the upper and lower edges. The side sill stiffener 6 has upper and lower flanges sandwiched between the upper and lower flanges of the side sill inner panel 3, the side sill extension 5 and the side sill outer panel 4, and the side sill inner panel 3, the side sill extension 5 and the side sill outer panel. The closed cross section formed by 4 is divided into two closed cross sections, and the side sill 2 is reinforced.

  As shown in FIG. 2, a plate-like jackup plate 7 extending in the vertical direction is interposed at the rear ends of the side sill extension 5, the side sill outer panel 4, and the side sill stiffener 6. The jack-up plate 7 extends from the upper edge flange to the lower edge flange of the side sill outer panel 4 and the side sill extension 5. The flange of the upper edge of the side sill stiffener 6 is separated from the flange of the upper edge of the side sill outer panel 4 at the rear end portion and joined to the intermediate portion in the vertical direction of the jackup plate 7.

  The upper end of the jack-up plate 7 is joined to the front end of a shock absorbing member 8 formed in a box shape by bending a steel plate. The rear end of the shock absorbing member 8 and the rear end of the side sill stiffener 6 are respectively formed with flange portions 10 and 11 facing rearward. The flange portions 10 and 11 close the opening of the rear end of the side sill 2. The end plate 13 to be joined is joined. Details of the end plate 13 will be described later.

  The pair of left and right side sill inner panels 3 and side sill extensions 5 are connected to each other by a center floor cross member 15, a middle floor cross member 16 and a front floor 17.

  The front ends of a pair of left and right rear frames 18 are joined to the upper part of the rear end portion of each side sill extension 5. The rear frame 18 includes a kick-up portion 19 that extends from the joint portion of the side sill extension 5 to the vehicle interior and obliquely upward and rearward, and a horizontal portion 20 that extends substantially rearward from the rear end of the kick-up portion 19. Yes. The rear frame 18 includes a U-shaped rear frame lower 21 (see FIG. 5) whose cross section opens upward, and a rear frame upper 22 that closes the upper opening of the rear frame lower 21 to form a closed cross section. Is formed. The pair of left and right rear frames 18 are connected to each other by a rear floor panel 23, a middle floor cross member 16, and a middle seat cross member (not shown) disposed below the rear floor panel 23.

  A rear inner panel 25 is joined to the outer side of the rear frame 18 in the vehicle width direction along the rear frame 18. The rear inner panel 25 extends up and down and front and rear to form a wall portion 26 constituting the rear side wall of the vehicle body 1, a wheel house inner portion 27 provided on the wall portion 26 to accommodate a rear wheel (not shown), and a rear damper (not shown). And a damper mounting seat 28 provided on the wall portion 26 to support the upper end.

  As shown in FIG. 5, the wheel house inner portion 27 of the rear inner panel 25 includes a wheel house recess 29 that is recessed in the wall portion 26 toward the inside of the vehicle, and a vehicle house along the periphery of the wheel house recess 29. And a wheelhouse inner flange 30 which is erected. The wheel house recess 29 is formed in a substantially semicircular shape when viewed from the side of the vehicle body, and the wheel house inner flange 30 is formed in an arc shape.

  As shown in FIGS. 1 and 2, a rear outer panel 31 that forms a rear outer shell of the vehicle body 1 is integrally formed at the rear end of the side sill outer panel 4. In another embodiment, the side sill outer panel 4 and the rear outer panel 31 may be formed as separate members and then joined together. The rear outer panel 31 has a semicircular cutout 32 at a portion corresponding to a wheel house (not shown) of the rear wheel. As shown in FIG. 5, the peripheral edge of the notch 32 is bent inward of the vehicle to form a flange 33. As shown in FIG. 2, the front portion of the cutout portion 32 of the side sill outer panel 4 is curved (bulged) toward the vehicle inner side and faces the front and upper sides of the wheel house inner flange portion 30. A portion 34 is formed. The front side of the wheel house outer flange 34 is a part of the rear entrance 35. The side sill outer panel 4, the rear outer panel 31, the center pillar stiffener 37, the side sill stiffener 6, the jackup plate 7, the shock absorbing member 8, the end plate 13, and the like are combined in advance to constitute an outer panel assembly 38 as a subassembly.

  On the other hand, the side sill inner panel 3, the center floor cross member 15, the middle floor cross member 16, the front floor 17, the rear frame 18, the rear floor panel 23, the middle seat cross member (not shown), the rear inner panel 25, and the like are combined in advance. The floor-side assembly 39 as a subassembly is configured. When the vehicle body is assembled, the outer panel assembly 38 and the floor side assembly 39 are assembled separately, and then both are combined.

  Next, the structure near the rear end of the side sill 2 will be described in detail. As shown in FIG. 3, the front portion of the side sill extension 5 includes a vehicle inner wall portion 41 extending in the vertical direction, a lower wall portion 42 extending horizontally from the lower edge of the vehicle inner wall portion 41 to the vehicle outer side, and the vehicle inner wall wall. The upper wall portion 43 extends horizontally from the upper edge of the portion 41 to the vehicle outer side, and is formed in a U-shaped cross section. A corner ridge 45 bent at a right angle is formed at the boundary between the vehicle interior side wall 41 and the lower wall 42. A flange portion 46 extending downward is formed on the outer edge of the lower wall portion 42, and a flange portion 47 extending upward is formed on the outer edge of the upper wall portion 43.

  The rear portion of the side sill extension 5 is widened so that the width gradually increases inward and upward as the vehicle moves rearward. Further, the rear part of the side sill extension 5 has a shape in which the corner ridge 45 is recessed outward and upward, and is provided with a recess 49 on the inner side and in the lower part. The concave portion 49 is defined by a concave upper wall portion 51 that is continuous with the vehicle interior side wall portion 41 and a concave portion side wall portion 52 that is continuous with the concave portion upper wall portion 51 and is continuous with the lower wall portion 42. The concave upper wall portion 51 is arranged so as to be inclined downward as it goes forward, and its front end is continuous with the lower wall portion 42. A corner ridge 53 that is bent at a right angle is formed at the boundary between the concave upper wall 51 and the vehicle inner wall 41. In order to increase the rigidity of the side sill extension 5, reinforcing beads may be arbitrarily formed on the vehicle interior side wall portion 41 and the concave upper wall portion 51 of the side sill extension 5.

  As shown in FIGS. 3 and 5, the front end portion of the rear frame lower 21 is joined to the rear end portion of the concave upper wall portion 51 and the vehicle interior side wall portion 41 of the side sill extension 5. The upper wall 43 of the rear end portion of the side sill extension 5 is cut off. The part of the upper wall 43 that has been cut off is closed by a rear frame upper 22 that extends forward from the rear frame lower 21. The front end of the rear frame upper 22 is joined to the rear end of the upper wall portion 43 and the vehicle interior side wall portion 41.

  As shown in FIGS. 5 to 8, when the side sill outer panel 4 is joined to the side sill extension 5, the opening formed at the rear end of the side sill 2 is closed by the end plate 13. As shown in FIG. 4, the end plate 13 is made of a steel plate and has a main body portion 55 that extends in the vertical and horizontal directions. The upper edge of the main body 55 has a vehicle inner portion 56 extending substantially horizontally, and the vehicle outer portion protrudes upwardly from the vehicle inner portion 56 to form an upper joint piece 57. The vehicle inner edge (right edge) portion, vehicle outer edge (left edge) portion, and lower edge portion of the main body portion 55 are bent rearward substantially at right angles to the main body portion 55 to be connected to the vehicle inner joint piece 58 and the vehicle outer joint. A piece 59 and a lower joining piece 60 are formed. The front end (rear end) portion of the vehicle outer side joining piece 59 is further bent toward the vehicle inner side to form a vehicle outer side flange portion 61. In the present embodiment, the vehicle inner joint piece 58, the lower joint piece 60, and the vehicle outer joint piece 59 are continuous, but may be separated from each other in other embodiments.

  As shown in FIG. 5, the end plate 13 is assembled to the outer panel assembly 38 in a state where the outer panel assembly 38 and the floor side assembly 39 are separated. In this state, the end plate 13 is welded at a position indicated by a welding point 101 to the flange portion 10 at the rear end of the shock absorbing member 8 and the flange portion 11 at the rear end of the side sill stiffener 6 on the front surface of the main body portion 55. (See FIGS. 3 and 8). Further, the vehicle outer side flange portion 61 of the end plate 13 is welded to the flange portion 33 of the rear outer panel 31 at a position indicated by a welding point 102 (see FIG. 7).

  When the outer panel assembly 38 and the floor side assembly 39 are combined, as shown in FIG. 6, the right half of the end plate 13 is guided rearward of the wheel house inner flange 30 of the rear inner panel 25, It rushes into the wheel house recess 29. On the other hand, the wheel house inner collar portion 30 is guided rearward from the upper joining piece 57 of the end plate 13. As a result, the rear surface of the upper joint piece 57 of the end plate 13 abuts against the front surface of the wheel house inner flange 30, and the vehicle inner portion 56 of the upper edge of the end plate 13 is aligned with the vehicle outer surface (rear wheel side) of the wheel house recess 29. The surface facing the surface). That is, the end plate 13 is hooked (engaged) with respect to the rear inner panel 25 in the front-rear direction, with the positions of the right half and the left half being switched. In addition, the vehicle interior joint piece 58 of the end plate 13 abuts on the vehicle exterior surface of the rear frame lower 21 and the vehicle exterior surface of the recessed side wall portion 52 of the side sill extension 5, and the lower joint piece 60 is the lower wall portion 42 of the side sill extension 5. It abuts on the upper surface.

  In this state, as shown in FIG. 7, the lower end edge of the wheel house inner flange 30 on the vehicle outer side is welded to the rear surface of the upper joining piece 57 of the end plate 13 at the position indicated by the welding point 103. Further, the rear end edge of the vehicle inner joint piece 58 of the end plate 13 is welded to the vehicle outer surface of the rear frame lower 21 at a position indicated by a welding point 104. These welding points 103 and 104 are formed by, for example, MIG welding.

  Further, the end plate 13 is welded to the concave side wall 52 of the side sill extension 5 at the position indicated by the welding point 105 of the vehicle interior joint piece 58, and the lower wall of the side sill extension 5 at the position indicated by the welding point 106. It is welded to the part 42. Further, the end plate 13 is welded to the wheel house recess 29 of the rear inner panel 25 and the rear frame upper 22 at the position indicated by the welding point 107 in the upper vehicle interior portion 56 so as to be overlapped (see FIG. 10). These welding points 105 to 107 are formed by spot welding, for example.

  A bearing hole 63 is formed in the recess side wall portion 52 and the vehicle interior side joining piece 58 of the end plate 13 joined to the recess side wall portion 52 so as to penetrate both members coaxially and in the same shape.

  As shown in FIGS. 7 and 9, a bracket 65 is joined to the vehicle interior side surface of the vehicle interior side wall 41 at the rear portion of the side sill extension 5. The bracket 65 is a press-formed product of a steel plate, has a substantially plate shape, and is joined to the vehicle interior side surface of the vehicle interior side wall portion 41 by welding at an upper portion thereof. The bracket 65 extends so as to cover the right side of the recess 49 downward and rearward from the joint portion with the vehicle interior side wall portion 41. A lower portion of the bracket 65 has a bearing hole 66 that faces the concave side wall portion 52 via a gap and is coaxial with the bearing hole 63. A support shaft 68 is supported by the bearing hole 63 and the bearing hole 66, and a front end of a trailing arm 70 for supporting the rear wheel is supported by the support shaft 68 via a bush (not shown).

  The end plate 13 in the vehicle body side part structure of the present embodiment can be assembled to the rear inner panel 25 and the side sill extension 5 from the vehicle width direction. Therefore, the end plate 13 can be incorporated in the outer panel assembly 38 in advance, and the rear end opening of the side sill 2 can be closed by the end plate 13 when the outer panel assembly 38 and the floor side assembly 39 are joined.

  The end plate 13 is hooked to the wheel house recess 29 and the wheel house inner flange 30 of the rear inner panel 25 so as to be immovable in the front-rear direction by the upper vehicle interior portion 56 and the upper joint piece 57. The joint portion with the inner panel 25 is strong. Further, the end plate 13 is connected to the shock absorbing member 8 and the side sill stiffener 6 to enhance rigidity. With these structures, the coupling efficiency of the vehicle body side structure can be increased, and the shock absorbing ability can be improved.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, the end plate 13 may be sub-assembled in advance on the floor side assembly 39 instead of the outer panel assembly 38.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 2 ... Side sill, 3 ... Side sill inner panel, 4 ... Side sill outer panel, 5 ... Side sill extension, 6 ... Side sill stiffener, 7 ... Jack up plate (plate member), 8 ... Shock absorption member, 10 ... Flange part, DESCRIPTION OF SYMBOLS 11 ... Flange part, 13 ... End plate, 18 ... Rear frame, 21 ... Rear frame lower, 22 ... Rear frame upper, 25 ... Rear inner panel, 26 ... Wall part, 27 ... Wheel house part, 29 ... Wheel house recessed part, DESCRIPTION OF SYMBOLS 30 ... Wheel house inner collar part, 31 ... Rear outer panel, 32 ... Notch part, 33 ... Flange part, 34 ... Wheel house outer collar part, 35 ... Rear entrance / exit, 38 ... Outer panel assembly, 39 ... Floor side assembly, 55 ... Main body, 56 ... Inside part, 57 ... Upper joint piece, 58 ... Inside car joint , 59 ... vehicle-exterior outer support, 60 ... lower joint piece, 61 ... vehicle exterior side flange portion

Claims (6)

A side sill inner panel having an approximately U-shaped cross section with the opening facing outward in the vehicle width direction and extending in the vehicle longitudinal direction on both sides of the vehicle body;
The opening has a substantially U-shaped cross section facing inward in the vehicle width direction, extends in the longitudinal direction of the vehicle body, and is joined so that the opening is opposed to the side sill inner panel. A side sill outer panel that forms an open cylindrical side sill;
A rear frame extending from the upper rear end of the side sill inner panel to the rear of the vehicle body;
An inner wall portion that extends upward from the rear frame to form an inner surface of a vehicle body side portion, a wheel house recess that is recessed inward in the vehicle width direction on the inner wall portion, and a periphery of the wheel house recess of the inner wall portion A rear inner panel including a wheel house inner portion including a wheel house inner collar portion protruding outward in the vehicle width direction along the
A rear outer panel extending rearward and upward from the rear end of the side sill outer to form the outer surface of the vehicle body side part;
An end plate for closing a rear end opening of the side sill,
The end plate includes a main body portion extending in the vertical direction and the vehicle width direction, an upper joint piece projecting upward from a vehicle outer side portion of the upper edge of the main body portion, and a vehicle inner edge of the main body portion. A vehicle-side joint piece bent and raised rearward and a vehicle-side joint piece bent and raised rearward along the vehicle-side edge of the main body, the vehicle-side joint piece being the rear outer panel or the The vehicle is joined to a side sill outer panel, the vehicle interior joint piece is joined to the rear frame, and the upper joint piece is disposed on the front side of the wheel house inner flange, while the vehicle interior portion of the upper edge of the main body is A vehicle body side part structure arranged on the vehicle exterior side of the wheel house recess. Between the side sill inner panel and the side sill outer panel, a side sill stiffener as a reinforcing material extending in the front-rear direction is interposed,
The vehicle body side part structure according to claim 1, wherein the side sill stiffener is joined to a front surface of the main body of the end plate at a rear end. Between the side sill inner panel and the side sill outer panel, a shock absorbing member formed in a box shape is disposed,
The vehicle body side part structure according to claim 2, wherein the shock absorbing member is joined to a front surface of the main body portion of the end plate. A plate member extending in the vertical direction is interposed between the side sill inner panel and the side sill outer panel,
The vehicle body side part structure according to claim 3, wherein the plate member is joined to the side sill stiffener and the shock absorbing member.   The vehicle body side part structure according to any one of claims 1 to 4, wherein the end plate is further joined to the side sill inner panel in the vehicle interior joint piece.   The said end plate is joined to the vehicle outer side surface of the said wheel house recessed part in the vehicle inner side part of the upper edge of the said main-body part, The Claim 1 characterized by the above-mentioned. Car body side structure.

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