JP5000219B2 - Vehicle side sill structure - Google Patents

Description

  The present invention relates to a vehicle side sill structure, and more particularly to a side sill structure of a center pillarless sliding door vehicle.

  The side sill is a pair of left and right frame members disposed below the left and right doors of the vehicle body. Conventionally, such a side sill extends in a box-shaped side sill cross-section by extending a reinforcing beam having a closed cross-sectional shape traversing the side sill cross-section to a range between the cross-member coupling portion and the center pillar intersection. The structure which raises torsional rigidity by providing in (for example, refer patent document 1) was known.

JP-A-8-20363

However, in a sliding door vehicle, a sliding door rail (hereinafter referred to as a lower rail) that supports the lower portion of the sliding door via an arm member protruding from the lower portion of the sliding door is disposed in the side sill section. Furthermore, an opening for connecting the arm member of the slide door to the lower rail is formed along the longitudinal direction of the lower rail in the vehicle body outer surface portion of the side sill. For this reason, there is a problem that it is difficult to increase the torsional rigidity of the side sill in the sliding door vehicle by the above-described conventional side sill structure.
In addition, in order to further improve the ease of getting on and off and the ease of use with a sliding door, it is desired to eliminate the center pillar of the sliding door vehicle, which is equivalent to a vehicle having a side sill and a center pillar without an opening for the lower rail. There is a problem that the body rigidity must be obtained.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and even a center pillarless sliding door vehicle has a side sill having no opening for a sliding door rail and It is an object of the present invention to provide a vehicle side sill structure capable of obtaining body rigidity equivalent to that of a vehicle including a center pillar.

To achieve the above object, according to a first aspect of the present invention, there is provided a side pillar structure for a center pillar-less vehicle in which an opening along a slide door rail that guides a slide door is formed on a side sill disposed below a front and rear door of a vehicle body. , to the side sill, which extends in the longitudinal direction of the opening, and the front and rear and extending between the door and disposed stiffening member is a U-shaped cross section that opens toward the side sill side, the stiffening member is coupled fixed in a state where the upper surface is joined to the inner upper surface of the side sill, the lower surface portion is in the state of being attached to the coupling immobilized the side sill in a state of being bonded to the lower surface of the inner side sill, cross co to form a closed section together with the in the longitudinal direction side sill of an opening by shaped opening is closed by the side sill side, the stiffening member, the side sill length Is extended so as to be perpendicular to the direction, the side end portions of the first and second cross members that are laterally bridged in appropriate spaced condition before and after to be positioned is divided into front door and the rear door is connected, Further, the stiffening member is integrally fixed to the first and second cross members and the floor member by connecting and fixing a floor pan, which is a floor member, to the stiffening member. The vehicle side sills feature

According to the first aspect of the invention, the side sill is provided with the stiffening member extending over the longitudinal direction of the opening for the slide door rail and extending between the front and rear doors. When the stiffening member is attached to the side sill, a closed cross section is formed together with the side sill over the longitudinal direction of the opening of the side sill. Thereby, by providing the stiffening member on the side sill, the torsional rigidity of the side sill provided with the opening is increased, and the rigidity in the longitudinal direction of the side sill is increased. Normally, the center pillar is arranged. The body rigidity between the front and rear doors is reinforced.

Here, wherein the stiffening member is extended so as to be perpendicular to the longitudinal direction of the side sill, the first that have been pre laterally bridged in appropriate spaced condition before and after to be positioned separately on the door side and the rear door side And the side edge part of the 2nd cross member is connected, It is characterized by the above-mentioned.

Further, the closed cross section formed by the stiffening member is connected to a cross member extending in a direction orthogonal to the longitudinal direction of the side sill. As a result , the rigidity of the connecting portion between the side sill and the cross member is increased and the body rigidity in the lateral direction of the side sill is increased. Therefore, even in a center pillarless sliding door vehicle, the side sill and center without a sliding door opening are provided. Body rigidity equivalent to that of a vehicle with pillars can be obtained.
Further, even when an impact load is applied to the side sill at the time of a side collision, the side sill is suppressed from being displaced toward the inside of the vehicle body, and deformation of the vehicle interior at the time of a side collision can be minimized. Furthermore, even if an impact load at the time of a frontal collision is applied to the side sill, it is possible to suppress the side sill from being buckled and deformed in the axial direction, and it is possible to suppress deformation in the vehicle interior at the time of the frontal collision.

To achieve the above object, according to a second invention, in the first invention, a front portion of a rear frame extending rearward is coupled and fixed to a rear portion of the side sill, and the side sill and the rear frame are fixed. The stiffening member is disposed across the surface.

According to the second invention, the rear portion of the rear frame extending rearward is coupled and fixed to the rear portion of the side sill, and the stiffening member is disposed across the side sill and the rear frame. . Thus, in addition to the operational effects of the first or second invention, the stiffening member disposed on the side sill and the rear frame are coupled and fixed. By buckling deformation, the impact load at the time of rear impact can be absorbed efficiently.

In order to achieve the above object, according to a third invention, in the second invention, a side end portion of a fuel tank protection member is assembled and fixed to the stiffening member.

According to the third invention, the side end portion of the fuel tank protection member is assembled and fixed to the stiffening member disposed across the side sill and the rear frame. As a result, in addition to the effects of the third invention, the rear frame is buckled in the axial direction and absorbs the impact load at the time of rear collision in the event of a rear collision, so that it is attached to the stiffening member. Since the fuel tank protection member is hardly deformed and deformation of the portion on which the fuel tank is mounted is suppressed, the fuel tank can be protected from an impact load.

  According to the present invention, the stiffening member extends between the front and rear doors and is fixedly coupled to the side sill over the longitudinal direction of the opening for the sliding door rail, and the cross member orthogonal to the longitudinal direction of the side sill. Side ends are connected. As a result, the torsional rigidity of the side sill is increased and the rigidity of the side sill in the longitudinal direction is increased, thereby reinforcing the side opening between the front and rear doors where the center pillar is disposed. Furthermore, the rigidity of the joint between the side sill and the cross member is increased, and the body rigidity is increased. As a result, even a center pillar-less sliding door vehicle can obtain body rigidity equivalent to that of a vehicle equipped with a side sill and a center pillar without an opening for the sliding door rail.

Hereinafter, an embodiment that is considered to be most suitable for the present invention will be described in detail with reference to the drawings.
1 is a perspective view of a vehicle body body to which the present invention is applied, FIG. 2 is a perspective view of a side sill in the same example, FIG. 3 is a perspective view of a rear gusset in the same example, and FIG. B is a sectional view taken along arrow B, FIG. 5 is a sectional view taken along arrow CC in FIG. 2, FIG. 6 is a sectional view taken along line DD in FIG. 2, and FIG. FIG. 8 is a sectional view taken along the line FF in FIG.

As shown in FIG. 1, the vehicle body 10 has a front door opening and a rear door opening due to a vehicle body structure in which a slide door is used as a rear door and there is no center pillar between the front and rear doors. The side opening 11 is integrally connected. The roof side rail 12 and the side sill 13 that form the side opening 11 are provided with an upper rail 14 and a lower rail 15 as slide door rails that guide a slide door (not shown). 15 creates a locus of the sliding door, and the sliding door opens and closes smoothly.
Since the side sill 13 is equally disposed on both the left and right sides of the vehicle body 10, the side sill 13 disposed on the left side of the vehicle body will be described below.

  As shown in FIG. 4, the side sill 13 includes a side sill outer 13A provided outside the vehicle body and a side sill inner 13B provided inside the vehicle body. The side sill outer 13A and the side sill inner 13B are coupled and fixed by welding in a state where vertical flange portions 13A1 and 13B1 formed on the respective upper portions are joined via upper portions of an upper slide door rail bracket 16 described later. The vertical flange portions 13A2 and 13B2 formed in the above are integrated by being joined and fixed by welding in a state of being joined via a lower portion of a side sill phosphorus hose 17 described later.

  In the side sill outer 13A, since the arm member at the lower part of the slide door is connected to the lower rail 15 in the cross section of the side sill 13, a first opening 13A3 as an opening is formed along the longitudinal direction of the lower rail 15 (FIG. 1). reference). In addition, on the back side of the first opening 13A3, upper and lower slide door rail brackets 16 and 18 having a U-shaped cross section opened toward the first opening 13A3 are disposed.

  The upper part of the upper slide door rail bracket 16 has a vertical shape, and is coupled and fixed by welding while being sandwiched between the flanges 13A1 and 13B1 of the side sill outer 13A and the side sill inner 13B. Further, the lower part of the upper slide door rail bracket 16 and the upper part of the lower slide door rail bracket 18 are connected and fixed by welding in a state of being vertically joined after being extended toward the inner side of the vehicle body. The lower part of the lower slide door rail bracket 18 is horizontally bent toward the first opening 13A3, and is joined and fixed by welding while being joined to the side part of the side sill outer 13A forming the first opening 13A3. Has been. Further, a side sill phosphorus hose 17 is interposed between the side end of the lower slide door rail bracket 18 from the inside of the vehicle body and the lower part of the side sill 13 in an oblique manner.

And the lower rail 15 is arrange | positioned between the opposing surfaces of these upper and lower slide door rail brackets 16 and 18. The lower rail 15 is provided with a roller (loading roller, guide roller) disposed at the tip of an arm member protruding from a slide door (not shown) so as to roll. Further, the lower rail 15 is curved so that the front side thereof is displaced toward the inner side of the vehicle body than the rear side. Accordingly, the upper and lower slide door rail brackets 16 and 18 are also formed such that the front side thereof is directed to the vehicle body inner side than the rear side. For this reason, in order to avoid interference with the upper and lower sliding door rail brackets 16, 18 facing the vehicle body inside, a second opening portion serving as an opening portion opened toward the vehicle body inner side is formed on the side surface portion of the side sill inner 13 </ b> B. 13B3 is formed along the upper and lower sliding door rail brackets 16,18.
When both the left and right rear doors are sliding doors, the first and second openings 13A3 and 13B3 are provided on the side sill (not shown) on the right side of the vehicle body as well as the side sill 13 on the left side of the vehicle body. It is done.

  As shown in FIG. 2, the side sill 13 on the left side of the vehicle body provided with the first and second openings 13A3 and 13B3 extends in the longitudinal direction of the first and second openings 13A3 and 13B3. A cross section that extends between the front and rear doors and forms a closed cross section with the side sill 13 in the longitudinal direction of the first and second openings 13A3 and 13B3 when extending between the front and rear doors. A U-shaped stiffening member (hereinafter referred to as gusset) 21 is provided. Further, the gusset 21 was horizontally mounted as a cross member extending so as to be orthogonal to the longitudinal direction of the side sill 13 and separated from each other on the front door side and the rear door side so as to be separated from each other. First and second cross members (for example, front seat front cross member, front seat rear cross member, cross member A, etc.) 19 and 20 are joined and fixed by welding in a state where side end portions are joined.

Specifically, as shown in FIGS. 2 to 8, the gusset 21 includes a front gusset 21 </ b> A and a rear gusset 21 </ b> B that are formed in two in the front-rear direction and open toward the side sill 13. (However, only the rear gusset 21B is shown in FIG. 3).
The front gusset 21A has a structure close to a state in which the front and rear of the rear gusset 21B are reversed, and therefore, the rear gusset 21B will be described as a representative here.

As shown in FIG. 3, the rear gusset 21 </ b> B is integrally formed with substantially horizontal joint surfaces 22 a, 22 b, 23 a, and 23 b at the tip portions of the substantially horizontal upper surface portion 22 and the lower surface portion 23.
Further, joint surfaces 22c, 22d, and 22e are formed on the upper surface portion 22 of the rear gusset 21B. The upper surface portion 22 is provided with irregularities so that the joint surfaces 22c, 22d, and 22e are raised upward. In addition, bolt holes 22d1 and 22e1 are formed in the joint surfaces 22d and 22e, respectively, and welding nuts 24 and 25 are fixed to the inside thereof. Further, a positioning pin insertion hole 22d2 is provided in the joining surface 22d.

  Further, a joint surface 23 c is integrally formed at the front portion of the lower surface portion 23. The joint surface 23c has a long upper surface, and the rear gusset 21B has a lower surface 23 so that when the front gusset 21A and the rear gusset 21B are joined, the rear gusset 21B supports the front gusset 21A from below. Are formed to be long, and the joint portions are alternately polymerized.

Further, a joining surface 23 d is integrally formed at the rear portion of the lower surface portion 23. A bolt hole 23d1 (shown in FIG. 5) is formed in the joint surface 23d, and a welding nut 26 is fixed to the inside thereof. A joint surface 23e is integrally formed between the joint surfaces 23d and 23c.
Further, similar to the upper surface portion 22, the lower surface portion 23 is provided with irregularities so that the joint surfaces 23c and 23d protrude downward one step.
In addition, joint surfaces 27a, 27b, 27c, 27d, 27e, and 27f are integrally formed on the substantially vertical side surface portion 27 of the rear gusset 21B from the front portion toward the rear portion.

  Then, as shown in FIG. 4, the gusset 21 is fixed by welding in a state where the rear joint surface of the front gusset 21A and the joint surfaces 22a, 22c, 23c, 27a, 27c of the rear gusset 21B are joined. Is formed. Further, the joining surface 22a of the rear gusset 21B is joined and fixed by welding in a state where the joining surface 22a is joined to the upper surface side of the side sill inner 13B, and the joining surface 23a is joined and fixed by welding while being joined to the lower surface side of the side sill inner 13B. 5, the joint surfaces 22b and 23b of the rear gusset 21B are formed on the upper and lower surfaces of the rear frame floor side front 28 as a rear frame extending rearward from the rear portion of the side sill 13, and the joint surfaces 27f ( 3) are joined and fixed by welding in a state of being joined to substantially vertical side surfaces of the rear frame floor side front 28, whereby the gusset 21 is integrated with the side sill 13 and the rear frame floor side front 28. Bonding is fixed.

  Further, the joint surface 27b of the rear gusset 21B is joined and fixed by welding in a state where the joint surface 27b is joined to the left end portion of the front floor pan 29 (shown in FIG. 4), and the joint surface 27d is an extension disposed at the rear portion of the front floor pan 29. Joined and fixed by welding (not shown) while joined to the left end of the front floor pan 30, and joined and fixed by welding while the joining surface 27e is joined to the lower left end of the second cross member 20. (Shown in FIG. 5), the joining surfaces 22d and 22e are joined and fixed by welding in a state where they are joined to the upper left end of the second cross member 20 (shown in FIG. 8), and the joining surface 22b is joined to the rear floor pan 31. In this state, the rear gusset 21B is joined and fixed by welding (shown in FIG. 6), whereby the rear cross member 20 and the floor members 29-3 are fixed. They are integrally connected and fixed to.

  Further, as shown in FIG. 8, the rear end portion of the first row seat rail mounting member 33 having a large plate thickness is provided on the upper surface portion of the rear gusset 21 </ b> B so as to support the rear portion of the first row seat rail 32. In a state where the positioning pin 34 provided at the rear portion of the row seat rail mounting member 33 is inserted into the positioning pin insertion hole 22d2 of the rear gusset 21B, it is fixed by a bolt 35 that passes through the bolt hole 22d1 and is screwed into the welding nut 24. (See FIG. 7) A bolt 38 that has a lower end portion of a seat rail mounting member 37 that supports the front portion of the second row seat rail 36 (shown in FIG. 5) passes through the bolt hole 22e1 and is screwed into the welding nut 25. Thus, together with the upper end of the second cross member 20, it is fastened together with the rear gusset 21B (see FIG. 5).

  Further, as shown in FIG. 5, the joint surface 23 d of the rear gusset 21 </ b> B passes through the bolt hole 23 d 1 with the left end portion of the fuel tank protection member 39 joined, and is screwed into the welding nut 26. It is fixed with a bolt 40.

  Further, each joint surface formed on the upper and lower surface portions of the front gusset 21A formed in the same manner as the rear gusset 21B is joined and fixed by welding in a state of being joined to the right end portion of the side sill inner 13B. Each joint surface formed in the portion is joined and fixed by welding with the first cross member 19 and the left end of the front floor pan 29 being joined. Furthermore, on the upper surface portion of the front gusset 21A, the front end portion of the first row seat rail mounting member 33 that supports the front portion of the first row seat rail 32 penetrates the bolt hole and is screwed into the welding nut. It is firmly attached and fixed by.

The gusset which is configured symmetrically with the gusset 21 and is arranged on the side sill on the right side of the vehicle body is also interposed between the side sill on the right side of the vehicle body and the cross member perpendicular to the longitudinal direction of the side sill on the right side of the vehicle body. It is connected and fixed by welding in the mounted state.
The left and right gussets may be connected by the first and second cross members 19 and 20.

In this way, the gusset 21 extends between the front and rear doors and is fixedly coupled to the side sill 13 over the longitudinal direction so as to include the first and second openings 13A3 and 13B3. A closed cross section is formed by the gusset 21 inside the vehicle body of the side sill 13 and a closed cross section is formed by the gusset inside the vehicle body of the right side sill of the vehicle body, whereby the torsional rigidity of the left and right side sills 13 is increased, The rigidity in the longitudinal direction of the side sill 13 is increased, and the side opening 11 between the front and rear doors is reinforced.
Furthermore, the gusset 21 is bonded and fixed by welding in a state where the side end portions of the first and second cross members 19 and 20 extending so as to be orthogonal to the longitudinal direction of the side sill 13 are joined, The rigidity of the joint between the side sill 13 and the first and second cross members 19 and 20 is increased, and the body rigidity between the left and right side sills 13 is increased. Thereby, even if it is a center pillar-less sliding door vehicle, body rigidity equivalent to the vehicle provided with the side sill and center pillar without the opening part for sliding doors can be acquired now.

Further, by ensuring the torsional rigidity of the side sill 13 and the body rigidity between the left and right side sills 13, the side sill 13 is suppressed from being displaced toward the inside of the vehicle body even when an impact load is applied to the side sill 13 at the time of a side collision. The Thereby, the vehicle interior deformation | transformation at the time of a side collision can be suppressed to the minimum.
Furthermore, even if an impact load at the time of a frontal collision is applied to the side sill 13 and the front floor pan 29, the side sill 13 is prevented from buckling in the axial direction. Thereby, the vehicle interior deformation at the time of a frontal collision can also be suppressed.

  Further, the rear end portion of the gusset 21 coupled and fixed to the side sill 13 and the rear frame floor side front 28 are coupled and fixed, so that the rear frame floor side front 28 is buckled in the axial direction in the event of a rear collision. It is designed to efficiently absorb the impact load at the time of rear-end collision. For this reason, the fuel tank protection member 39 attached to the rear portion of the gusset 21 is not easily deformed, and deformation of the portion on which the fuel tank is mounted can be suppressed, so that the fuel tank can be protected from an impact load. .

1 is a perspective view of a vehicle body body to which the present invention is applied. It is a perspective view of the side sill in the example. It is a perspective view of the gusset rear part in the example. It is a BB arrow directional cross-sectional view in FIG. It is CC sectional view taken on the line in FIG. It is DD sectional view taken on the line in FIG. It is EE arrow sectional drawing in FIG. It is FF arrow sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Body body 11 Side surface opening part 13 Side sill 13A Side sill outer 13A3 1st opening part (opening part)
13B Side sill inner 13B3 Second opening (opening)
15 Lower rail (sliding door rail)
16 Upper slide door rail bracket 18 Lower slide door rail bracket 19 First cross member 20 Second cross member 21 Gusset (stiffening member)
21A Front gusset 21B Rear gusset 28 Rear frame floor side front 29 Front floor pan 30 Extension front floor pan 31 Rear floor pan 33 First row seat rail mounting member (seat rail mounting member)
37 Second row seat rail mounting member (seat rail mounting member)
39 Fuel tank protection member

Claims (3)

In the side sill structure of a center pillar-less vehicle in which an opening along the slide door rail that guides the slide door is formed on the side sill disposed on the lower side of the front and rear doors of the vehicle body,
Said side sill, which extends in the longitudinal direction of the opening, and the front and rear and extending between the door, the toward the side sill side disposed stiffening member is open ended U-shaped cross section,
The stiffening member is
In the state where the upper surface portion is bonded and fixed to the upper surface of the inner side of the side sill and the lower surface portion is bonded and fixed to the lower surface of the inner side of the side sill and attached to the side sill , The closed section is formed with the side sill over the longitudinal direction of the opening by closing the side U-shaped opening of the U-shaped cross section ,
The stiffening member extends in a direction orthogonal to the longitudinal direction of the side sill, and is first and second mounted in a state where they are separated from each other on the front door side and the rear door side so as to be separated from each other. The side end of the cross member is connected , and a floor pan, which is a floor member, is connected and fixed to the stiffening member, so that the stiffening member is connected to the first and second cross members and A side sill structure for a vehicle, wherein the vehicle side sill structure is integrally coupled and fixed to a floor member .   The rear portion of the side sill is fixedly coupled with a front portion of a rear frame extending rearward, and the stiffening member is disposed across the side sill and the rear frame. The side sill structure of the vehicle according to claim 1.   The side sill structure for a vehicle according to claim 2, wherein a side end portion of a fuel tank protection member is assembled and fixed to the stiffening member.

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