JP6084503B2 - Vehicle lower body structure - Google Patents

Description

  The present invention relates to a vehicle body lower side structure in which a guide rail that guides a door to move forward and backward is supported on a rocker side that constitutes a lower edge of a side wall of a vehicle body.

  Conventionally, the vehicle body lower side structure of the vehicle is disclosed in Patent Document 1 below. According to this publication, the vehicle body lower side structure of the vehicle constitutes a lower end edge portion of the side wall of the vehicle body, extends in the front-rear direction of the vehicle body, and has a rocker whose longitudinal cross section is a hollow closed cross section, A reinforcing panel that extends in the front-rear direction of the vehicle body in the rocker and reinforces the rocker, a wheel house formed at the lower end of the side wall so as to be adjacent to the rear end of the rocker, and formed on the outer surface of the rocker A rocker opening and a guide provided in the rocker and supported by the rocker and opening toward the rocker opening, and guiding the door to move forward and backward along the outer side surface of the side wall. A box-like support that supports the rail, and a stopper that is supported by a rear end portion of the box-like support and prevents the door from moving backward beyond a predetermined position.

  And if the said door is moved ahead, the door opening formed in the said side wall will be closed. On the other hand, if the door is moved backward, the door opening is opened, and if the door is further moved backward and blocked by the stopper, the door opening is fully opened. Yes.

JP 2006-35929 A

  By the way, as described above, the guide rail is for guiding the movement of the door forward and backward, and the stopper is for stopping the door at the predetermined position. And if such door movement guidance and stop can be made more stable in terms of strength, it is considered that the opening and closing operation of this door will be achieved with a higher degree of accuracy. This is preferable.

  However, in the above-described conventional technology, the box-shaped support body that supports the guide rail and the stopper and the reinforcement panel that reinforces the rocker are provided apart from each other in the rocker, and the box-shaped support is directly formed by the reinforcement panel. Support reinforcement is not considered. For this reason, it is difficult to say that the above-mentioned conventional technology is sufficiently considered for improving the support rigidity of the guide rail and the stopper with respect to the rocker via the box-shaped support, and there is room for improvement in this respect. It is left.

  Therefore, it is conceivable to provide a reinforcing material for connecting the box-shaped support to the reinforcing panel and reinforcing the box-shaped support, thereby improving the support rigidity of the guide rail and the stopper with respect to the rocker. However, if this is simply done, the number of parts on the lower side of the vehicle body increases, resulting in a decrease in productivity and an increase in production cost.

  The present invention has been made paying attention to the circumstances as described above, and an object of the present invention is a guide rail that is supported on the rocker side of the lower part of the vehicle body and guides the door to move forward and backward. In the case where the stopper for preventing the movement of the door is provided, the opening and closing operation of the door can be accurately achieved, and even in this case, the productivity of the lower side of the vehicle body is maintained well. Therefore, the production cost can be reduced.

According to the first aspect of the present invention, a rocker 10 that constitutes the lower end edge of the side wall 9 of the vehicle body 2 and extends in the front-rear direction of the vehicle body 2 and has a longitudinal cross section of a hollow closed cross section, and a vehicle body within the rocker 10 2, a reinforcing panel 11 that reinforces the rocker 10, a wheel house 12 formed at the lower end of the side wall 9 so as to be adjacent to the rear end of the rocker 10, and the outer surface of the rocker 10 A rocker opening 35 formed in the rocker 10, provided in the rocker 10, supported by the rocker 10, opened toward the rocker opening 35, and moved forward and backward along the outer surface of the side wall 9. A box-like support body 37 that supports the guide rail 32 that guides the door 30 and a rear end portion of the box-like support body 37 to prevent the door 30 from moving backward beyond a predetermined position. With stopper 48 And the vehicle body lower side structure of the vehicle,
The front side of the reinforcing panel 11 is formed so that each section in the longitudinal direction has a lateral hat shape that opens toward the rocker opening 35, while the rear end of the reinforcing panel 11 is formed on the wheel house 12. The box-shaped support body 37 is coupled to the bottom plate 53 on the front side of the reinforcing panel 11, and the vicinity of the stopper 48 at the rear end of the box-shaped support body 37 is connected to the reinforcing panel 11. The vehicle body lower side structure is characterized in that a retainer 57 to be supported at the rear end of the vehicle is provided.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, a rocker having a lower end edge portion of the side wall of the vehicle body and extending in the front-rear direction of the vehicle body, the longitudinal section thereof being a hollow closed section, and extending in the front-rear direction of the vehicle body in the rocker A reinforcing panel for reinforcing the rocker, a wheel house formed at the lower end of the side wall adjacent to the rear end of the rocker, a rocker opening formed on the outer surface of the rocker, and the rocker A box-shaped support body that is provided and supported by the rocker, opens toward the rocker opening, and supports a guide rail that guides the door to move forward and backward along the outer side surface of the side wall; In the vehicle body lower side structure provided with a stopper that is supported at the rear end of the box-shaped support and prevents the door from moving backward beyond a predetermined position,
The front side of the reinforcing panel is formed so that each section in the longitudinal direction has a lateral hat shape that opens toward the rocker opening side, while the rear end of the reinforcing panel is coupled to the wheel house. The retainer for connecting the box-like support to the bottom plate on the front side of the reinforcement panel and supporting the vicinity of the stopper at the rear end of the box-like support on the rear end of the reinforcement panel is provided. The following effects occur.

  That is, first, since the cross section of the front side of the reinforcing panel is a hat shape, the rigidity of the front side of the reinforcing panel can be further improved as compared with a simple flat plate shape. it can. Moreover, since the rear end portion of the reinforcing panel is coupled to the wheel house formed at the lower end portion of the side wall of the vehicle body, the rigidity of the reinforcing panel can be improved over the entire length. Furthermore, on the front side of the reinforcing panel having a hat-shaped cross section as described above, the bottom plate constituting the midway portion in the width direction can have higher rigidity. Since the box-shaped support is coupled to the bottom plate on the front side of the reinforcing panel as described above, the guide rail supported by the box-shaped support includes the box-shaped support and the reinforcing panel. And firmly supported by the rocker.

  Moreover, as described above, since the retainer for supporting the vicinity of the stopper at the rear end portion of the box-shaped support body at the rear end portion of the reinforcing panel is provided, the retainer is supported by the rear end portion of the box-shaped support body. The stopper is firmly supported by the rocker and the wheel house via the rear end portion of the box-shaped support, the retainer, and the rear end portion of the reinforcing panel.

  Accordingly, since the support rigidity of the guide rail and the stopper with respect to the rocker is improved, the movement of the door in the front and rear directions by the guide rail and the movement prevention of the door to the predetermined position by the stopper are stable in strength. Made in the state. As a result, the opening / closing operation of the door can be achieved with high accuracy, which is preferable in the operation of the door.

  Second, when a traveling vehicle collides with a certain object ahead (front collision), the impact force of the reinforcing panel having improved rigidity as described above is added to the rocker. A box-like support body that is directly coupled to the front side and the front side of the reinforcing panel and supported by the rear end of the reinforcing panel via the retainer, and the rear end of the reinforcing panel are coupled. Supported by the wheel house. Therefore, the deformation of the vehicle body due to the impact force at the time of the front collision is effectively suppressed.

  Third, when an object collides (side impacts) from the outside with respect to the box-like support body of the vehicle, the impact force is applied to the wheel via the retainer and the rear end of the reinforcing panel. Supported by the house. Therefore, the deformation of the vehicle body due to the impact force at the time of the side collision is also effectively suppressed.

  And fourthly, the above-mentioned first to third effects are particularly devised for the shape of the reinforcing panel and the connecting position of the box-like support to the reinforcing panel, or for the rear end of the reinforcing panel. This can be achieved by coupling to a wheel house, and it is unnecessary to provide a separate large reinforcing material. Therefore, even when the various effects can be achieved, the productivity of the lower side of the vehicle body can be maintained satisfactorily and the production cost can be reduced.

It is an II sectional view expanded sectional view of the FIG. It is a side surface partial broken view of a vehicle body rear part. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1. It is a partial simplified perspective view of what was shown in FIG.

  The vehicle body lower side structure of the vehicle according to the present invention is provided with a guide rail that is supported by the rocker side of the vehicle body lower side portion and guides the door to move forward and backward, and a stopper that prevents the door from moving. The door opening / closing operation can be achieved with high accuracy, and even in this case, the productivity of the lower side of the vehicle body is maintained well, and the production cost can be reduced. In order to realize the above-described object, a mode for carrying out the present invention is as follows.

  That is, the vehicle body lower side structure constitutes a lower end edge portion of the side wall of the vehicle body, extends in the front-rear direction of the vehicle body, and has a rocker whose longitudinal cross section is a hollow closed cross section, and the vehicle body within the rocker. A reinforcing panel that extends in the front-rear direction and reinforces the rocker; a wheel house formed at the lower end of the side wall adjacent to the rear end of the rocker; and a rocker opening formed on the outer surface of the rocker; A box shape that is provided in the rocker and supported by the rocker, opens toward the rocker opening, and supports a guide rail that guides the door to move forward and backward along the outer side surface of the side wall. A support and a stopper that is supported by the rear end of the box-like support and prevents the door from moving backward beyond a predetermined position.

  The front side of the reinforcing panel is formed such that each section in the longitudinal direction has a lateral hat shape that opens toward the rocker opening side. Meanwhile, the rear end portion of the reinforcing panel is coupled to the wheel house. The box-shaped support is coupled to the bottom plate on the front side of the reinforcing panel. A retainer is provided for supporting the vicinity of the stopper at the rear end of the box-shaped support on the rear end of the reinforcing panel.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1.

  The vehicle 1 includes a vehicle body 2 made of sheet metal and a wheel 4 suspended from the vehicle body 2 by a suspension 3. The vehicle body 2 is supported on the traveling surface 5 by the suspension 3 and the wheel 4.

  The interior of the vehicle body 2 is a vehicle compartment 8, and the vehicle body 2 includes a side wall 9 that forms a side surface of the vehicle compartment 8, a rocker 10 that is formed at the lower edge of the side wall 9 and extends in the front-rear direction of the vehicle body 2, The wheel 10 extends in the front-rear direction of the vehicle body 2 in the rocker 10 and is formed at the lower end portion of the side wall 9 so as to be adjacent to the rear side of the rear end portion of the rocker 10 and the wheel. 4 and a wheel house 12 formed so as to cover 4 from above.

  The rocker 10 has outer and inner panels 16 and 17 that extend long in the front-rear direction of the vehicle body 2 and face each other in the width direction of the vehicle body 2. The upper edge of the reinforcing panel 11 is sandwiched between the upper ends of the outer and inner panels 16 and 17 and joined to each other by spot welding S1. Further, the lower end edge portion of the reinforcing panel 11 is sandwiched between the lower end edge portions of the outer and inner panels 16 and 17 and coupled to each other by spot welding S2. A space is formed between the outer and inner panels 16 and 17. As a result, the rocker 10 has a hollow closed cross section in the longitudinal direction and is reinforced by the reinforcing panel 11 to have high rigidity, and constitutes a skeleton member of the vehicle body 2.

  The wheel house 12 has an outer and inner panels 21 and 22 whose outer side constitutes a wrinkle outside the vehicle body 2. The outer and inner panels 16 and 17 at the rear end portion of the rocker 10 and the outer and inner panels 21 and 22 at the front end portion of the wheel house 12 are coupled to each other, and the rocker 10 and the wheel house 12 reinforce each other. It is supposed to fit. In this case, the wheel house 12 has an upwardly convex arc shape in a side view of the vehicle body 2 (FIG. 2), and each longitudinal section of the wheel house 12 has a U shape. Thereby, the wheel house 12 is a high-rigidity member in the vehicle body 2 as a whole. Further, the rear end edge portion of the reinforcing panel 11 is sandwiched between the opposing edge portions of the outer and inner panels 21 and 22 of the wheel house 12 facing each other, and coupled to each other by spot welding S3.

  The vehicle body 2 includes a rear side member 25 having a rear end portion of the rocker 10 extending rearward from the rear. The front end portion of the rear side member 25 is coupled to the upper portion of the inner side surface of the rocker 10 in the width direction of the vehicle body 2. The rear side member 25 has an inverted hat shape in the cross section of each part in the longitudinal direction, has high rigidity, and constitutes a skeleton member of the vehicle body 2.

  Floor panels 26 are installed between the rockers 10 at the left and right sides of the vehicle body 2 and between the front ends of the rear side members 25. Further, after extending upward from the rear end portion side of the floor panel 26, the seat riser 27 is formed extending rearward. The floor panel 26 and the seat riser 27 form the lower surface of the passenger compartment 8. The rear end portion of the floor panel 26 and the seat riser 27 are coupled to each other, and the combined bodies 26 and 27 extend in the width direction of the vehicle body 2 and each portion in the longitudinal direction has a hollow closed cross section and has high rigidity. doing. The combined bodies 26, 27 constitute a skeleton member of the vehicle body 2 by firmly connecting the rockers 10 on the left and right sides of the vehicle body 2 to each other.

  A sheet 28 is provided above the combined bodies 26 and 27 so as to straddle the combined bodies 26 and 27. Although not shown in detail, the front end portion of the seat 28 is supported by the rear end portion of the floor panel 26 in the vicinity of the front of the combined bodies 26 and 27 reinforced by the combined bodies 26 and 27. The rear end of the seat 28 is supported by a portion of the seat riser 27 in the vicinity of the rear of the joined bodies 26 and 27 reinforced by the joined bodies 26 and 27.

  A door opening 29 is formed in the rear portion of the side wall 9 of the vehicle body 2 on the side of the rear seat 28, and a door 30 is provided to close the door opening 29 so that the door opening 29 can be opened and closed from the outside of the vehicle body 2. In this case, the rocker 10 constitutes a lower opening edge of the door opening 29. Upper, lower, and midway guide rails 31 to 33 that extend long in the front-rear direction of the vehicle body 2 are supported on the rear outer surface of the side wall 9 of the vehicle body 2. By these upper, lower, and midway guide rails 31 to 33, the door 30 is guided to move forward and rearward of the vehicle body 2 along the outer surface of the side wall 9. In this case, the door 30 closes the door opening 29 by moving forward and inward of the vehicle body 2 (solid line in FIGS. 1 to 3), and opens the door opening 29 by moving backward in the opposite direction. (The chain line in FIGS. 1 and 2).

  In the above case, the lower guide rail 32 is supported on the rocker 10 side. Specifically, a rocker opening 35 extending in the longitudinal direction of the rocker 10 is formed in the outer panel 16 that forms the outer surface of the rocker 10. Further, a box-like support body 37 provided in the rocker 10 and supported by the rocker 10 via a support panel 36 and opening toward the rocker opening 35 is provided.

  The box-shaped support 37 extends in the longitudinal direction of the rocker 10 and faces the upper and lower surfaces 38 and 39 apart from each other in the vertical direction. A bottom plate 40 for joining the respective edge portions of the dog, and a rear plate 41 for joining the rear edge portions of the plates 38 to 40 to close the rear end opening of the box-shaped support body 37. ing. As a result, the box-shaped support body 37 is formed into a U-shape in which each cross section in the longitudinal direction opens toward the rocker opening 35 and is made of a highly rigid material. The rear face plate 41 is inclined so as to go outward as it goes rearward of the vehicle body 2. The opening edge of the box-shaped support 37 is joined to the opening edge of the rocker opening 35 by spot welding S4.

  Another support panel 42 that supports the box-shaped support body 37 with respect to the upper end portion of the rocker 10 is provided at least at the same position as the seat riser 27 in the longitudinal direction of the vehicle body 2. The upper edge of the other support panel 42 is sandwiched between the upper edges of the outer and inner panels 16 and 17 of the rocker 10 and joined by the spot welding S1. The edge portion is coupled to the upper surface of the upper surface plate 38 of the box-shaped support 37. As a result, the other support panel 42 connects the upper end of the rocker 10 and the box-shaped support 37 to each other and reinforces these 10 and 37. The other support panel 42 may not be provided.

  The lower guide rail 32 is supported on the lower surface of the upper plate 38 of the box-shaped support 37. A guide roller 43 that is fitted into the lower guide rail 32 and is movable forward and backward only along the lower guide rail 32 is provided, and a support arm that supports the lower end portion of the door 30 on the guide roller 43. 44 is provided. Although not shown, the upper end portion of the door 30 and the midway portion in the vertical direction are supported on the midway guide rails 31 and 33 by the same configuration as this.

  An elastic stopper 48 is supported by a fastener 47 on a rear plate 41 which is a rear end portion of the box-shaped support 37. The stopper 48 prevents the door 30 from moving backward beyond a predetermined position when the door opening 29 is fully opened, as shown by a one-dot chain line in FIGS.

  The front side of the reinforcing panel 11 constitutes an upper portion and a lower surface plate 51, 52, and the upper and lower surface plates 51, 52 are located on the inner side of the vehicle body 2 below the upper and lower edge portions. And the outward flanges 54 respectively formed on the upper and lower edge portions of the upper and lower surface plates 51 and 52 on the outer side of the vehicle body 2. Thereby, the front side of the reinforcing panel 11 is formed to have a lateral hat shape in which each cross section in the longitudinal direction opens toward the rocker opening 35 side.

  The bottom plate 40 of the box-shaped support 37 is brought into surface contact with the bottom plate 53 on the front side of the reinforcing panel 11 and joined by spot welding S5.

  A retainer 57 is provided for supporting the vicinity of the stopper 48 in the rear plate 41, which is the rear end portion of the box-shaped support body 37, on the rear end portion of the reinforcing panel 11. The retainer 57 is integrally extended from the pedestal portion 58 and the pedestal portion 58 fastened by the fastener 47 to the vicinity of the stopper 48 on the rear surface plate 41, and each extending end portion of the retainer 57 A plurality of (two) leg portions 59 coupled to the rear end portion of the reinforcing panel 11 by spot welding S6 are provided.

  The suspension 3 is disposed at the same position as the rear end portions of the reinforcing panel 11 and the box-shaped support body 37 in the front-rear direction of the vehicle body 2, and the outer surface of the inner panel 17 of the rocker 10 and the front end portion of the rear side member 25. A suspension bracket 62 that is coupled to each other across the lower surface of the vehicle, a suspension arm 63 that extends forward and rearward of the vehicle body 2 behind the suspension bracket 62 and supports the wheel 4 at the rear end thereof, and the suspension A pivot shaft 64 that pivots the front end of the arm 63 to the suspension bracket 62 via an elastic material is provided.

  According to the above configuration, first, since the cross section of the front side of the reinforcing panel 11 has a hat shape, the front side of the reinforcing panel 11 has rigidity compared to a simple flat plate shape. Can be improved more. Further, since the rear end portion of the reinforcing panel 11 is coupled to the wheel house 12 formed at the lower end portion of the side wall 9 of the vehicle body 2, the reinforcing panel 11 can improve its rigidity in the entire longitudinal direction. Furthermore, on the front side of the reinforcing panel 11 having a hat-shaped cross section as described above, the bottom plate 53 constituting the midway portion in the width direction can have higher rigidity. Since the box-shaped support body 37 is coupled to the bottom plate 53 on the front side of the reinforcing panel 11 as described above, the lower guide rail 32 supported by the box-shaped support body 37 has the box shape. The rocker 10 is firmly supported by the support 37 and the reinforcing panel 11.

  Moreover, as described above, the retainer 57 for supporting the vicinity of the stopper 48 at the rear end of the box-shaped support 37 on the rear end of the reinforcing panel 11 is provided. The stopper 48 supported by the portion is firmly supported to the rocker 10 and the wheel house 12 via the rear end portion of the box-shaped support body 37, the retainer 57, and the rear end portion of the reinforcing panel 11.

  Therefore, since the support rigidity of the lower guide rail 32 and the stopper 48 with respect to the rocker 10 is improved, the lower guide rail 32 moves the door 30 forward and backward, and the stopper 48 moves the door 30 to a predetermined position. The movement prevention is performed in a stable state. As a result, the opening / closing operation of the door 30 can be achieved with high accuracy, which is preferable in the operation of the door 30.

  Second, when the traveling vehicle 1 collides with a certain object ahead (front collision), the impact force is not only the rocker 10 but also the reinforcement whose rigidity is improved as described above. A box-like support 37 that is directly coupled to the front side of the panel 11 and the front side of the reinforcing panel 11 and supported by the rear end of the reinforcing panel 11 via the retainer 57; and the reinforcing panel 11 Is supported by a wheel house 12 to which the rear ends of the two are joined. Therefore, the deformation of the vehicle body 2 due to the impact force at the time of the front collision is effectively suppressed.

  Thirdly, when an object collides (side impacts) from the outside with respect to the box-shaped support body 37 of the vehicle 1, the impact force is a rocker reinforced by the other support panel 42. 10, supported by a combination 26, 27 of the floor panel 26 and seat riser 27, supported by the wheel house 12 via the retainer 57 and the rear end of the reinforcing panel 11, and further, the rocker 10 It is supported by the suspension bracket 62 via Therefore, deformation of the vehicle body 2 due to the impact force at the time of the side collision is also effectively suppressed.

  And fourthly, the first to third effects described above are devised in particular for the shape of the reinforcing panel 11 and the connecting position of the box-shaped support 37 to the reinforcing panel 11, or for the reinforcing panel 11. This is achieved by connecting the rear end to the wheel house 12, and it is unnecessary to provide a separate large reinforcing material. Therefore, even when the various effects can be achieved, the productivity of the lower side of the vehicle body 2 can be maintained well, and the production cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Suspension 4 Wheel 8 Car compartment 9 Side wall 10 Rocker 11 Reinforcement panel 12 Wheel house 29 Door opening 30 Door 32 Lower guide rail (guide rail)
35 Rocker opening 37 Box-shaped support 48 Stopper 51 Top plate 52 Bottom plate 53 Bottom plate 54 Outward flange 57 Retainer 58 Pedestal portion 59 Leg portion 62 Suspension bracket 63 Suspension arm 64 Pivot shaft S1 to S6 Spot welding

Claims (1)

A rocker that forms the lower end edge of the side wall of the vehicle body and extends in the front-rear direction of the vehicle body, the longitudinal section of which is a hollow closed cross section, and the reinforcement that extends in the front-rear direction of the vehicle body in this rocker and reinforces this rocker A panel, a wheel house formed at the lower end of the side wall adjacent to the rear end of the rocker, a rocker opening formed on the outer surface of the rocker, and provided in the rocker and supported by the rocker A box-shaped support that supports the guide rail that opens toward the rocker opening and guides the door to move forward and backward along the outer side surface of the side wall; and In the vehicle body lower side structure of the vehicle, which is supported by the end portion and includes a stopper that prevents the door from moving backward beyond a predetermined position.
The front side of the reinforcing panel is formed so that each section in the longitudinal direction has a lateral hat shape that opens toward the rocker opening side, while the rear end of the reinforcing panel is coupled to the wheel house. The retainer for connecting the box-like support to the bottom plate on the front side of the reinforcement panel and supporting the vicinity of the stopper at the rear end of the box-like support on the rear end of the reinforcement panel is provided. A vehicle body lower side structure characterized by that.

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