CN114302843B - Vehicle body side structure and partition member - Google Patents

Abstract

The vehicle body side portion structure of the present invention is characterized by comprising: a side sill (1) extending in the front-rear direction of the vehicle body; a center pillar outer member (7) extending upward from the side sill (1); a center pillar inner member (6) that is disposed on the inner side in the vehicle width direction of the center pillar outer member (7); and a partition member (3) disposed in a hollow portion formed by the center pillar outer member (7) and the center pillar inner member (6) and extending in the vehicle body front-rear direction, wherein the partition member (3) is configured by a plurality of partition portions (a horizontal portion (9), an outer inclined portion (11)) connected by a resin hinge (a hinge portion (H2)), and is provided with a restriction mechanism (an angle restricting rib (19)) for restricting the bending angle of the resin hinge.

Description

Vehicle body side structure and partition member

Technical Field

The present invention relates to a vehicle body side portion structure and a partition member.

Background

Conventionally, there is known a vehicle body side portion structure in which a hollow portion of a center pillar joined to a side sill is filled with a foamable resin in order to improve sound insulation performance of a vehicle body (for example, refer to patent document 1). In this vehicle body side structure, the partition member is disposed in the hollow portion at the lower end of the center pillar so as to face the upper surface of the side sill, and the foamable resin is filled between the upper surface of the side sill and the partition member (filling chamber).

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2019-14326

Disclosure of Invention

In the conventional vehicle body side portion structure (for example, refer to patent document 1), the partition member is partially foldable so as to facilitate the operation in the narrow hollow portion of the center pillar. Specifically, the partition member inserted into the center pillar from the predetermined opening in a folded state is unfolded again, thereby partitioning the hollow portion of the center pillar to form a filling chamber of foamable resin.

However, such a partition member may not sufficiently recover the shape before folding when unfolded, and a gap may be formed between the partition member and the inner wall surface of the center pillar. Further, if such a gap is formed, the foamable resin may leak out of the filling chamber through the gap.

The invention provides a partition member capable of more reliably preventing foamable resin from leaking from a preset filling chamber, and a vehicle body side part structure provided with the partition member.

The vehicle body side portion structure according to the present invention for solving the above-described problems is characterized by comprising: a side sill extending in a front-rear direction of a vehicle body; a center pillar outer member extending upward from the side sill; a center pillar inner member disposed on an inner side of the center pillar outer member in a vehicle width direction; and a partition member disposed in a hollow portion formed by the center pillar outer and the center pillar inner and extending in a vehicle body front-rear direction, the partition member being configured by a plurality of partition portions connected by a resin hinge, and including a restriction mechanism for a bending angle of the resin hinge.

The partition member according to the present invention for solving the above-described problems is a partition member for partitioning a filling chamber of foamable resin in a hollow portion of a center pillar, and is characterized by comprising a plurality of partition portions connected by a resin hinge, and a restriction mechanism for restricting a bending angle of the resin hinge.

Effects of the invention

According to the vehicle body side portion structure and the partition member of the present invention, the foamable resin can be more reliably prevented from leaking out of the filling chamber set in advance.

Drawings

Fig. 1 is a partially enlarged perspective view of a vehicle body side portion structure according to an embodiment of the present invention.

Fig. 2 is a sectional view of fig. 1 at II-II.

Fig. 3 is a sectional view of fig. 1 at III-III.

Fig. 4A is an overall perspective view of a partition member according to an embodiment of the present invention.

Fig. 4B is a partial cross-sectional view of IVb-IVb of fig. 4A.

Fig. 5A is a front view of the partition member in fig. 1 as seen from the outside of the vehicle body.

Fig. 5B is a top view of the partition member in fig. 1.

Fig. 5C is a bottom view of the partition member in fig. 1.

Fig. 5D is a side view of the partition member in fig. 1 as seen from the front side of the vehicle body.

Fig. 5E is a side view of the partition member in fig. 1 as seen from the rear side of the vehicle body.

Fig. 6 is a partially enlarged perspective view showing a state in which the center pillar outer member and the partition member are removed in fig. 1.

Fig. 7A is a process explanatory diagram of a method for manufacturing a vehicle body side portion structure according to the present embodiment.

Fig. 7B is a process explanatory diagram of a method for manufacturing a vehicle body side portion structure according to the present embodiment.

Fig. 7C is a process explanatory diagram of a method for manufacturing a vehicle body side portion structure according to the present embodiment.

Fig. 7D is a process explanatory diagram of a method for manufacturing the vehicle body side portion structure of the present embodiment.

Fig. 8A is a perspective view showing a foaming position of a filler in a filling chamber of the vehicle body side portion structure of the present embodiment.

Fig. 8B is a perspective view showing a foaming position of a filler in a filling chamber of a vehicle body side portion structure as a reference example.

Detailed Description

Next, a vehicle body side structure according to an embodiment (this embodiment) for carrying out the present invention will be described in detail with reference to the drawings. The arrow direction of the drawing referred to in the vertical direction coincides with the vertical direction of the vehicle body. The directions of the arrows shown in the drawings are aligned with the inner and outer sides of the vehicle body in the vehicle width direction.

The partition member constituting the vehicle body side portion structure of the present embodiment can be folded and unfolded when the partition member is disposed in the hollow portion of the center pillar to form the filling chamber of the foamable resin. The partition member is mainly characterized by a limiting mechanism for limiting the bending angle during folding.

Hereinafter, this vehicle body side structure will be described by taking as an example a vehicle body side structure in which a hollow portion of a center pillar is partitioned by a partition member to form a filling chamber of foamable resin. Incidentally, the filling structure of the foamable resin in the center pillar functions to prevent transmission of road noise generated during running of the automobile and wind noise of the vehicle body constituent members to the occupant.

The vehicle body side portion structure of the present embodiment is applied to both the left and right sides of the vehicle body.

Hereinafter, only a structure of a vehicle body side portion disposed on a left side portion of a vehicle body will be described, and a structure of a vehicle body side portion disposed on a right side portion of a vehicle body, which is symmetrical with the structure of a vehicle body side portion on the left side portion across a center line in a vehicle width direction, will be omitted.

Fig. 1 is a partially enlarged perspective view of a vehicle body side portion structure C of the present embodiment.

In fig. 1, the center pillar outer 7 is shown by a phantom line (two-dot chain line) for convenience of drawing in the hollow portion 8 of the center pillar 2.

As shown in fig. 1, the vehicle body side structure C includes a side sill 1, a center pillar 2, and a partition member 3.

< Side sill >

As shown in fig. 1, the side sill 1 is disposed on a side portion of a vehicle body so as to extend in the front-rear direction.

The side sill 1 includes a side sill inner 4 disposed on the inner side in the vehicle width direction and a side sill outer 5 disposed on the outer side in the vehicle width direction.

The side sill inner 4 has a cap shape that is open to the outside in the vehicle width direction in a cross-sectional view intersecting the vehicle body front-rear direction. The side sill outer 5 has a cap shape that is open inward in the vehicle width direction when viewed in cross section intersecting the vehicle body front-rear direction.

The flanges of the side sill inner 4 and the side sill outer 5, which correspond to the hat-shaped edge portions of each other, are joined to each other by spot welding or the like. Thereby, the bulging portions corresponding to the hat-shaped top portions of each other are integrated with each other, and the side sill 1 forms a closed cross section.

The center pillar inner 6, which is described later and constitutes the center pillar 2, is disposed between the flange of the side sill inner 4 and the flange of the side sill outer 5, and is joined to the flanges of the side sill inner 4 and the side sill outer 5 so as to overlap each other in three pieces.

The upper surface 5a of the side sill outer 5 is slightly inclined so as to be displaced downward from the center pillar inner 6 side toward the vehicle width direction outer side.

On the upper surface 5a, a circular hole 30a and a long hole 30b (see fig. 6) serving as mounting holes for the partition member 3 are formed as described later.

Although not shown, a plurality of reinforcing members having a substantially L-shape in cross section are disposed inside the side sill 1.

These reinforcement members are disposed so as to extend in the vehicle body front-rear direction at upper corners and lower corners of the hat-shaped top portion of the side sill inner 4. The reinforcement members are disposed so as to extend in the vehicle body front-rear direction at upper corners and lower corners of the hat-shaped top portion of the side sill outer 5.

< Center column >)

The center pillar 2 (see fig. 1) is a hollow pillar that extends in the vertical direction on the vehicle body side portion.

As shown in fig. 1, the lower portion of the center pillar 2 is joined to the side sill 1. Although not shown, the upper portion of the center pillar 2 is joined to the roof rail.

The center pillar 2 in the present embodiment is slightly inclined so as to gradually shift rearward of the vehicle body from the lower portion side toward the upper portion.

The center pillar 2 includes a center pillar inner member 6 disposed on the inner side in the vehicle width direction and a center pillar outer member 7 disposed on the outer side in the vehicle width direction.

(Inner column part)

As described above, the center pillar inner 6 is formed of a substantially plate body extending upward from the lower side between the flange of the side sill inner 4 and the flange of the side sill outer 5.

The center pillar inner 6 forms a general outer shape of the center pillar 2 in a side view from the inside in the vehicle width direction. That is, the lower portion of the center pillar inner 6 is formed to have a wide width on the side sill 1 side, and gradually narrows the width in the vehicle body front-rear direction as it goes upward. Specifically, both edges in the vehicle body front-rear direction at the lower portion of the center pillar inner member 6 draw a gentle curve so as to be concave downward.

Further, since the center pillar 2 in the present embodiment is slightly inclined rearward as described above, the curve formed on the front side in the vehicle body front-rear direction is formed so as to draw a circular arc that is gentler than the curve formed on the rear side.

The center pillar inner 6 has a substantially rectangular opening 14 at a substantially center in the vehicle body front-rear direction at a lower portion thereof.

The opening 14 that communicates the inside and outside of the hollow portion 8 of the center pillar 2 on the inner side in the vehicle width direction serves as an arrangement opening of the partition member 3 to the hollow portion 8 of the center pillar 2 as will be described later in detail. The opening 14 in the present embodiment also serves as a placement opening for placing the outer half of the seatbelt retractor (not shown) in the vehicle width direction at the hollow portion 8 of the center pillar 2.

A filling hole 15 of foamable resin, which will be described later, is formed in the lower portion of the center pillar inner member 6. The filling hole 15 communicates with a filling chamber 17, which will be described later, formed between the partition member 3 and the upper surface 5a of the side sill outer 5.

The filling hole 15 is constituted by a pair of filling holes 15a and 15 b. These filling holes 15a, 15b are arranged so as to sandwich the lower portion of the opening 14 in the vehicle body front-rear direction.

Specifically, the filling hole 15a is formed below a1 st inclined portion 12a of the partition member 3 described later. The filling hole 15b is formed below a2 nd inclined portion 12b of the partition member 3 described later.

The filling holes 15a and 15b face the wall portion 10 of the partition member 3 described later. The wall 10 corresponds to what is called "injection guide rib" in the claims.

(Center post outer member)

Next, the center pillar outer 7 (see fig. 1) will be described.

Fig. 2 is a sectional view of fig. 1 at II-II. Fig. 3 is a sectional view of fig. 1 at III-III. In fig. 2 and 3, the same reference numerals are given to the same components as those in fig. 1, and detailed description thereof is omitted.

As shown in fig. 2, the center pillar outer 7 has a cap shape that is open inward in the vehicle width direction when viewed in cross section intersecting the up-down direction.

The two flanges of the center pillar outer 7 corresponding to the cap-shaped edge portions are joined to the two edges of the center pillar inner 6 in the vehicle body front-rear direction by spot welding or the like.

As a result, as shown in fig. 1, the center pillar outer 7 is formed to have a wide width on the side sill 1 side in accordance with the shape of the center pillar inner 6, and gradually narrows the width in the vehicle body front-rear direction as it goes upward.

As shown in fig. 2, the hollow portion 8 is formed between the inner column member 6 and the bulge portion corresponding to the top of the hat shape in the outer column member 7.

In addition, a case is shown in which the hollow portion 8 shown in fig. 2 is formed above the partition member 3 described later, and reference numeral 14 is an opening portion of the center pillar inner member 6.

The hollow portion 8 in the present embodiment has a cross-sectional shape shown in fig. 2 intersecting the vertical direction, and has a shape of a substantially isosceles trapezoid in which an upper bottom shorter than a lower bottom is located on the outer side in the vehicle width direction.

In fig. 2, reference numeral 16 denotes a clip for attaching a spacer (not shown) to the inner wall surface of the center pillar outer 7. The clip 16 is arranged at a position corresponding to the recess 23 of the partition member 3 in the up-down direction as described later.

In fig. 2, the description of the reinforcing material disposed on the inner wall surface of the center pillar outer 7 is omitted for convenience of drawing.

As shown in fig. 1, both side surfaces of the center pillar outer 7 in the vehicle body front-rear direction are gradually extended (gradually extended, day at foot so) from above to below. The lower portions of the side sill outer 7 extend along the upper surface 5a of the side sill outer 5.

The lower portions of the both side surfaces of the center pillar outer 7 are joined to the upper surface 5a of the side sill outer 5 by spot welding or the like.

As shown in fig. 3, the outer surface 21 of the center pillar outer 7 in the vehicle width direction is inclined so as to shift outward in the vehicle width direction as going from above to below.

The lower end portion 21a of the outer surface 21 extends so as to overlap with the outer surface 22 of the side sill outer 5 in the vehicle width direction.

The overlapped portion of the lower end portion 21a of the center pillar outer 7 is joined to the outer side surface 22 of the side sill outer 5 by spot welding or the like.

In fig. 3, reference numeral 4 denotes a side sill inner, and reference numeral 14 denotes an opening of the center pillar inner 6. Reference numeral 16 denotes the above-described clip for attaching the spacer, and reference numeral 3 denotes a partition member to be described next. In fig. 3, for convenience of drawing, the description of the reinforcing material disposed on the inner wall surface of the center pillar outer 7 is omitted.

< Partition Member >)

Next, the partition member 3 (see fig. 1) will be described.

Fig. 4A is an overall perspective view of a partition member according to an embodiment of the present invention, and fig. 4B is a partial cross-sectional view of IVb-IVb of fig. 4A. Fig. 5A is a front view of the partition member 3 in fig. 1 viewed from the outside of the vehicle body, fig. 5B is a top view of the partition member 3 in fig. 1, fig. 5C is a bottom view of the partition member 3 in fig. 1, fig. 5D is a side view of the partition member 3 in fig. 1 viewed from the front side of the vehicle body, and fig. 5E is a side view of the partition member 3 in fig. 1 viewed from the rear side of the vehicle body.

As shown in fig. 4A, the partition member 3 has a horizontal portion 9, an inclined portion 12, and an outer inclined portion 11. These horizontal portion 9, inclined portion 12 and outer inclined portion 11 constitute what is called a "partition portion" in the claims.

As shown in fig. 4A and 4B, the partition member 3 is configured to include a hinge portion H1 having a folded-in-half structure, a hinge portion H2 of the outer inclined portion 11, an angle restricting rib 19 of the hinge portion H2, a recess 18, a wall portion 10, and the like, which will be described later. The hinge portion H2 corresponds to a so-called "resin hinge" in the claims. The angle restricting rib 19 corresponds to a so-called "bending angle restricting mechanism" in the claims, and the wall portion 10 corresponds to a so-called "injection guiding rib" in the claims.

Incidentally, the partition member 3 in the present embodiment contemplates an integrally molded product formed of synthetic resin.

(Horizontal part)

As shown in fig. 5A to 5C, the horizontal portion 9 is formed by joining a 1 st half 9a and a2 nd half 9b aligned in the vehicle body front-rear direction via a hinge portion H1. Further, in fig. 4A, the hinge H1 is indicated by a hidden line (broken line).

As shown in fig. 5A to 5C, the hinge portion H1 is formed to be thinner than a general portion of the horizontal portion 9. The hinge portion H1 partially joins the 1 st half 9a and the 2 nd half 9b to each other at a substantially center in the vehicle width direction (inner-outer direction) of the horizontal portion 9.

The horizontal portion 9 has a folded structure 20 (see fig. 7B) that is folded in half so that the 1 st half 9a and the 2 nd half 9B face each other by the hinge portion H1.

The 1 st half 9a in the present embodiment is disposed on the front side in the vehicle body front-rear direction. As shown in fig. 5B and 5C, the planar shape of the 1 st half 9a is a substantially rectangular trapezoid having a sloping side 9a1 at the front end in the vehicle body front-rear direction.

The 2 nd half 9b in the present embodiment is disposed on the rear side in the vehicle body front-rear direction. The planar shape of the 2 nd half 9b is a substantially rectangular trapezoid having a sloping side 9b1 at the rear end in the vehicle body front-rear direction.

That is, as shown in fig. 5B and 5C, the planar shape of the horizontal portion 9 formed by joining the 1 st half 9a and the 2 nd half 9B is a substantially trapezoidal shape having an upper bottom having a short side on the inner side in the vehicle width direction and a lower bottom having a long side extending parallel to the upper bottom on the outer side in the vehicle width direction.

In the present embodiment, the inclined edge 9a1 of the 1 st half 9a is longer than the inclined edge 9b1 of the 2 nd half 9 b.

(Inclined portion)

Next, the inclined portion 12 (see fig. 4A) will be described.

As shown in fig. 5A, the inclined portion 12 is constituted by a1 st inclined portion 12a disposed on the front side in the vehicle body front-rear direction of the 1 st half 9a and a2 nd inclined portion 12b disposed on the rear side in the vehicle body front-rear direction of the 2 nd half 9 b.

The 1 st inclined portion 12a has a substantially triangular shape in a plan view shown in fig. 5B. The 1 st inclined portion 12a is connected to the hypotenuse 9a1 of the 1 st half 9a at its base. In addition, the 1 st inclined portion 12a extends in the substantially vehicle body front-rear direction along the 1 st side 26a of the substantially triangular shape and extends in the substantially vehicle width direction (the inner-outer direction) along the 2 nd side 26B of the substantially triangular shape in a plan view shown in fig. 5B.

The 1 st inclined portion 12a is inclined so as to gradually shift upward toward the front side in the vehicle body front-rear direction in the front view shown in fig. 5A.

As shown in fig. 5A and 5B, the 1 st inclined portion 12a is slightly curved so as to protrude upward.

Thus, as shown in fig. 1, the 1 st side 26a of the 1 st inclined portion 12a is disposed along the inner wall surface of the center pillar inner member 6. As shown in fig. 1, the 2 nd side 26b of the 1 st inclined portion 12a is disposed along the inner wall surface of the front side portion of the center pillar outer 7 in the vehicle body front-rear direction.

The 2 nd inclined portion 12B has a substantially triangular shape in a plan view shown in fig. 5B. The bottom side of the substantially triangular shape of the 2 nd inclined portion 12b is connected to the hypotenuse 9b1 of the 2 nd half 9 b. In addition, the 2 nd inclined portion 12B extends in the substantially vehicle body front-rear direction along the 1 st side 27a of the substantially triangular shape, and the 2 nd side 27B of the substantially triangular shape extends in the substantially vehicle width direction (the inner-outer direction) in a plan view shown in fig. 5B.

The 2 nd inclined portion 12b is inclined so as to gradually shift upward toward the rear side in the vehicle body front-rear direction in the front view shown in fig. 5A.

As shown in fig. 5A and 5B, the 2 nd inclined portion 12B is slightly curved so as to protrude upward.

Thus, the 1 st side 27a of the 2 nd inclined portion 12b is disposed along the inner wall surface of the column inner member 6 (see fig. 1). The 2 nd side 27b of the 2 nd inclined portion 12b is disposed along the inner wall surface of the vehicle body front-rear direction rear side portion of the center pillar outer 7 (see fig. 1).

Incidentally, as shown in fig. 5A, the height of the 2 nd inclined portion 12b is set so as to be higher upward than the 1 st inclined portion 12 a.

As shown in fig. 4A, a bent portion 13 is formed at an upper portion of the inclined portion 12. The bent portion 13a of the 1 st inclined portion 12a is inclined so as to change its angle to the front side with respect to the 1 st inclined portion 12 a. The bent portion 13b of the 2 nd inclined portion 12b is inclined so as to change its angle rearward with respect to the 2 nd inclined portion 12 b.

Thus, when the partition member 3 is disposed in the hollow portion of the center pillar 2 shown in fig. 1, the bent portion 13 of the inclined portion 12 is disposed so as to follow the inner wall surface of the center pillar 2.

(Outer inclined portion)

Next, the outer inclined portion 11 (see fig. 4A) will be described.

As shown in fig. 5B and 5C, the outer inclined portion 11 is constituted by a1 st outer inclined portion 11a arranged on the 1 st half 9a side and a 2 nd outer inclined portion 11B arranged on the 2 nd half 9B side.

The 1 st outer inclined portion 11a and the 2 nd outer inclined portion 11b are each formed of an elongated plate body formed to extend long along the outer end edges of the 1 st half 9a and the 2 nd half 9b in the vehicle width direction.

The 1 st outer inclined portion 11a and the 2 nd outer inclined portion 11b are attached to the 1 st half 9a and the 2 nd half 9 via separate hinge portions H2, H2 (resin hinges), respectively.

As shown in fig. 5D and 5E, these hinge portions H2, H2 are formed to be thinner than the general portions of the 1 st outer inclined portion 11a and the 2 nd outer inclined portion 11 b.

The 1 st outer inclined portion 11a and the 2 nd outer inclined portion 11b are rotatable about the hinge portion H2 at the outer end edges of the 1 st half 9a and the 2 nd half 9b in the vehicle width direction, respectively. That is, the 1 st outer inclined portion 11a and the 2 nd outer inclined portion 11b are respectively foldable by being vertically displaceable with respect to the 1 st half 9a and the 2 nd half 9b on the outer side in the vehicle width direction.

(Angle limiting rib)

Next, the angle restricting rib 19 (see fig. 4B) will be described.

As shown in fig. 4B, the angle restricting rib 19 as a restricting mechanism for the bending angle is arranged so as to be close to a hinge portion H2 (resin hinge) connecting the horizontal portion 9 (partition portion) and the outer inclined portion 11 (partition portion).

The angle restricting rib 19 is constituted by an angle restricting rib 19a formed at an end edge of the horizontal portion 9 on the side connected by the hinge portion H2 (resin hinge), and an angle restricting rib 19b formed at an end edge of the outer inclined portion 11 on the side connected by the hinge portion H2 (resin hinge).

The angle restricting ribs 19a and 19b extend downward from the end edges of the horizontal portion 9 and the outer inclined portion 11, respectively, and face each other.

That is, the angle restricting ribs 19a, 19b are respectively erected so as to face the outer inclined portion 11 in the direction D in which the outer inclined portion 11 is bent with respect to the horizontal portion 9, as will be described later, on the side of the angle formed by the outer inclined portion 11 and the horizontal portion 9.

Thus, as shown in fig. 4A, the angle restricting ribs 19 are arranged along the bending line FL of the outer inclined portion 11.

As shown in fig. 4B, when the outer inclined portion 11 is bent in the bending direction D with respect to the horizontal portion 9, the angle restricting rib 19B indicated by a virtual line (two-dot chain line) abuts against the angle restricting rib 19a, thereby restricting the bending angle of the outer inclined portion 11.

(Concave portion)

Next, the recess 18 (see fig. 4B) will be described.

As shown in fig. 5A, the recess 18 is constituted by a1 st recess 18a arranged on the 1 st half 9a side and a 2 nd recess 18b arranged on the 2 nd half 9b side.

The 1 st concave portion 18a and the 2 nd concave portion 18b are each formed so as to protrude downward from the 1 st half 9a and the 2 nd half 9b, respectively.

As shown in fig. 5B, the 1 st concave portion 18a is disposed substantially at the center of the 1 st half 9a in the vehicle body front-rear direction. As shown in fig. 5B, the 2 nd recess 18B is disposed at a position close to the oblique side 9B1 of the 2 nd half 9B.

As shown in fig. 5A, the 1 st recess 18a and the 2 nd recess 18b have base portions 28a, 28b and engaging portions 29a, 29b, respectively. Note that, in the following description, the base 28a and the base 28b are not distinguished, and are simply referred to as the base 28.

The base 28 has a substantially circular truncated cone shape that reduces in diameter away from the lower surface of the 1 st half 9a and the lower surface of the 2 nd half 9 b.

As shown in fig. 5A to 5C, these base portions 28 are formed by partially recessing each plate constituting the 1 st half 9a and the 2 nd half 9b downward. That is, these bases 28 are formed of bottomed cylinders which are open at the upper side and closed at the lower side. Incidentally, in fig. 3, the axis of the base portion 28 denoted by the reference numeral Ax extends in a manner orthogonal to the upper surface 5a of the side sill outer 5.

When the engagement portions 29a and 29b (see fig. 5A) described later are engaged with the upper surface 5A (see fig. 1) of the side sill outer 5, the base portion 28 (see fig. 5A) functions as a spacer that separates the upper surface 5A from the horizontal portion 9 at a predetermined interval, as shown in fig. 3.

As shown in fig. 5A and 5C, the engagement portions 29a and 29b are disposed on the lower end surfaces of the base portions 28a and 28b, respectively.

The engagement portions 29a and 29b are configured to be engaged with a circular hole 30a (see fig. 6) and a long hole 30b (see fig. 6), which will be described later, respectively. The engaging portions 29a and 29b in the present embodiment are assumed to be projections having barbs that engage with the peripheral edge of the back side hole portion when fitted into the circular hole 30a and the long hole 30b, respectively, but are not limited thereto.

Next, the circular hole 30a (see fig. 6) and the long hole 30b (see fig. 6) engaged by the engaging portions 29a and 29b (see fig. 5A) will be described.

Fig. 6 is a partially enlarged perspective view showing a case where the center pillar outer member 7 and the partition member 3 are removed in fig. 1.

As shown in fig. 6, a circular hole 30a and a long hole 30b are formed in the upper surface 5A of the side sill outer 5 so as to correspond to the engagement portions 29a, 29b (see fig. 5A) of the partition member 3 when the partition member 3 (see fig. 1) is disposed on the upper surface 5A. These circular holes 30a and long holes 30b penetrate the plate material forming the side sill outer 5.

As shown in fig. 1, the circular hole 30a (see fig. 6) engaged with the engagement portion 29a (see fig. 5A) serves as a main reference when the partition member 3 is positioned relative to the upper surface 5A of the side sill outer 5.

As shown in fig. 6, the long hole 30b is formed long in the vehicle body front-rear direction. The long hole 30b serves as a sub-reference for positioning the partition member 3 with respect to the upper surface 5a of the side sill outer 5.

That is, as will be described later, when the engaging portion 29a (see fig. 5A) is engaged with the circular hole 30a (see fig. 6) and then the engaging portion 29b (see fig. 5A) is engaged with the long hole 30b (see fig. 6), the long hole 30b absorbs a slight deviation in the front-rear direction of the engaging portion 29b and engages with the engaging portion 29 b.

(Wall portion)

Next, the wall portion 10 (see fig. 4A) serving as the injection guide rib will be described.

As shown in fig. 1, the wall portion 10 in the present embodiment faces the filling hole 15 (hole portion) in the hollow portion 8 of the center pillar 2.

As will be described later, the wall portion 10 functions as a guide plate that guides the flow of a filler (foamable resin) to be described later downward when the filler is injected into the hollow portion 8 of the center pillar 2 through the filler hole 15.

As shown in fig. 4A, such a wall portion 10 is formed of a plate body having a substantially triangular shape. As shown in fig. 1, the wall 10 in the present embodiment is formed at both the 1 st inclined portion 12a and the 2 nd inclined portion 12 b.

When such a partition member 3 is disposed on the inclined upper surface 5a of the side sill outer 5 as shown in fig. 3, the plate surface of the horizontal portion 9 is substantially horizontal by the base portion 28 having the axis Ax orthogonal to the upper surface 5a.

The outer inclined portion 11 rotatably attached to the horizontal portion 9 about the hinge portion H2 is restrained from being displaced upward by the contact of the outer edge portion in the vehicle width direction thereof with the inner wall surface of the inclined center pillar outer 7.

In the vehicle body side structure C in which such a partition member 3 is disposed in the hollow portion 8 of the center pillar 2, as shown in fig. 1, the hollow portion 8 of the center pillar 2 is partitioned by the partition member 3 in the up-down direction.

The hollow portion 8 of the center pillar 2 forms a filling chamber 17 of foamable resin between the partition member 3 and the upper surface 5a of the side sill outer 5. The packing chamber 17 communicates with the outside of the center pillar 2 via the packing holes 15a and 15 b.

The wall portion 10 of the partition member 3 is opposed to the filling hole 15 (hole portion).

Method for manufacturing vehicle body side structure

Hereinafter, a method for manufacturing the vehicle body side structure C of the present embodiment will be described while mainly describing a method for attaching the partition member 3 to the hollow portion 8 of the center pillar 2.

Fig. 7A is an explanatory view of the 1 st step in the method of manufacturing the vehicle body side portion structure C in which the outer inclined portion 11 of the partition member 3 is folded.

Fig. 7B is an explanatory view of the 2 nd step in the method of manufacturing the vehicle body side portion structure C in which the horizontal portion 9 of the partition member 3 is folded in half.

Fig. 7C is an explanatory view of the 3 rd step in the method of manufacturing the vehicle body side portion structure C in which the partition member 3 is inserted into the hollow portion 8 of the center pillar 2.

Fig. 7D is an explanatory view of the 4 th step in the method of manufacturing the vehicle body side structure C in which the partition member 3 is attached to the upper surface 5a of the side sill outer 5 by being deployed in the hollow portion 8 of the center pillar 2.

In step 1 of the manufacturing method, as shown in fig. 7A, the outer inclined portion 11 of the partition member 3 is displaced downward and folded.

At this time, the bending angle of the outer inclined portion 11 is limited by the angle limiting rib 19.

In fig. 7A, reference numeral 18b denotes a2 nd concave portion, and reference numeral 12b denotes a2 nd inclined portion.

Next, in step2 of the manufacturing method, as shown in fig. 7B, the horizontal portion 9 of the partition member 3 is folded in half around the hinge portion H1. Thus, the 1 st half 9a of the horizontal portion 9 is opposed to the 2 nd half 9b.

In fig. 7B, reference numeral 12a denotes a 1 st inclined portion, and reference numeral 12B denotes a2 nd inclined portion. Reference numeral 18a is a 1 st concave portion, and reference numeral 18b is a2 nd concave portion.

Next, in step 3 of the manufacturing method, as shown in fig. 7C, the folded-in partition member 3 is disposed from the vehicle interior side (the back side of the paper surface in fig. 7C) above the side sill outer 5 via the opening 14 of the center pillar inner 6. That is, the partition member 3 is inserted into the hollow portion 8 of the center pillar 2.

Then, the engaging portion 29a of the 1 st concave portion 18a is brought close to the circular hole 30a. At this time, the folded front outer inclined portion 11a (see fig. 5B) is unfolded so as to gradually approach the inner wall surface of the center pillar 2.

In fig. 7C, reference numeral 5a is the upper surface of the side sill outer 5. In addition, reference numeral 30b is a long hole into which the engagement portion 29b of the 2 nd recess portion 18b is to be engaged.

The outer inclined portion 11a is brought into contact with the inner wall surface of the center pillar 2 below the clip 16 as shown in fig. 3 while avoiding interference with the front clip 16 (see fig. 2) by the concave portion 23 (see fig. 2).

Next, in step 4 of the manufacturing method, as shown in fig. 7D, the 1 st half 9a of the horizontal portion 9 is disposed so as to extend along the upper surface 5a of the side sill outer 5. At the same time, half 2, 9b, is unfolded relative to half 1, 9 a.

At this time, the folded rear outer inclined portion 11B (see fig. 5B) is unfolded so as to gradually approach the inner wall surface of the center pillar 2.

The outer inclined portion 11b is brought into contact with the inner wall surface of the center pillar 2 below the clip 16 as shown in fig. 3 while avoiding interference with the clip 16 (see fig. 2) on the rear side by the concave portion 23 (see fig. 2).

After the 1 st half 9a and the 2 nd half 9b are aligned in the vehicle body front-rear direction by such deployment, first, the engaging portion 29a of the 1 st concave portion 18a is inserted into the circular hole 30a as the main reference and engaged.

Next, when the engaging portion 29b of the 2 nd concave portion 18b is inserted into the long hole 30b, the position of the engaging portion 29b may be slightly deviated in the vehicle body front-rear direction according to the extent of the expansion of the 1 st half 9a and the 2 nd half 9 b.

In contrast, the long hole 30b is formed long in the vehicle body front-rear direction.

Thereby, the long hole 30b absorbs a slight deviation in the front-rear direction of the engagement portion 29b and engages with the engagement portion 29 b.

When the engagement portions 29a and 29b are engaged with the circular hole 30a and the long hole 30b, respectively, the base 28a of the 1 st concave portion 18a and the base 28b of the 2 nd concave portion 18b are spaced apart from the upper surface 5a of the side sill outer 5 so that the plate surfaces of the horizontal portions 9 (the 1 st half 9a and the 2 nd half 9 b) become horizontal.

As a result, the filling chamber 17 (see fig. 1) of the foamable resin is formed between the partition member 3 and the upper surface 5a of the side sill outer 5.

Next, a filling process of filling the foamable resin into the filling chamber 17 (see fig. 1) will be described.

Fig. 8A is a perspective view showing the position of the foaming source Fp of the filler filled into the filling chamber 17 of the vehicle body side portion structure C of the present embodiment. Fig. 8B is a perspective view showing the position of the foaming source Fp of the filler filled into the filling chamber 17 of the vehicle body side structure Co as a reference example.

The vehicle body side structure C of the present embodiment has the wall portion 10 in the partition member 3, and the vehicle body side structure Co as a reference example does not have the wall portion 10 in the partition member 3a, and differs from the former in this point.

In this filling step, an uncured foamable resin (liquid) is injected from the filling hole 15 into the filling chamber 17, and the foamable resin is foamed and then cured, whereby the filling chamber 17 is filled with the foamable resin after curing.

The foamable resin after curing in the present embodiment is assumed to be a rigid polyurethane foam, but the present invention is not limited to this, and other curable foamable resins may be used.

The rigid polyurethane foam in this embodiment is formed by foaming and then curing a polyurethane foam stock solution.

Examples of the polyurethane foam stock solution include a solution obtained by mixing an isocyanate solution and a solution obtained by premixing a polyether polyol with a foaming agent such as cyclopentane and water, and premixing with an auxiliary agent such as a catalyst and an antifoaming agent.

As shown in fig. 8B, in the vehicle body side portion structure Co having no wall portion 10, when the uncured foamable resin R is injected into the filling chamber 17 from the filling hole 15, the foamable resin R in a liquid state is accumulated on the upper surface 5a of the side sill outer 5 at a position on the outer side in the vehicle width direction. In particular, this tendency becomes remarkable in the upper surface 5a having a downward gradient toward the outside.

After that, the foamable resin R starts a crosslinking reaction to foam, and the foam gradually fills the filling chamber 17. Then, as the crosslinking reaction proceeds, the foamable resin R is cured.

At this time, the basic foaming source Fp of the foamable resin R is located outside in the vehicle width direction where the uncured foamable resin R is accumulated in the initial stage.

In contrast, in the vehicle body side portion structure C of the present embodiment, as shown in fig. 8A, when the uncured foamable resin R is injected into the filling chamber 17 from the filling hole 15, the uncured foamable resin R collides with the wall portion 10 functioning as a guide plate. Thereafter, the foamable resin R changes the flow direction to the lower direction by the wall portion 10.

When the uncured foamable resin R reaches the upper surface 5a of the side sill outer 5, foaming immediately starts. That is, in the vehicle body side portion structure C of the present embodiment, unlike the reference example, the upper surface 5a of the side sill outer 5 located below the wall portion 10 forms the foaming source Fp.

< Effect >

Next, the operational effects of the vehicle body side portion structure C of the present embodiment will be described.

The partition member 3 of the present embodiment has a plurality of partition portions, i.e., a horizontal portion 9 and an outward inclined portion 11, connected by a hinge portion H2 (resin hinge). The partition member 3 further includes a regulating mechanism (angle regulating rib 19) for regulating the bending angle of the outer inclined portion 11 with respect to the horizontal portion 9.

According to the present embodiment, when the partition member 3 is deployed in the hollow portion of the center pillar 2, the shape before bending is restored more reliably. In this way, in the present embodiment, the formation of the gap between the inner wall surface of the center pillar 2 and the partition member 3 is suppressed as much as possible, and the foamable resin can be effectively prevented from leaking out of the filling chamber 17.

The above-described bending angle limiting mechanism is constituted by a pair of angle limiting ribs 19a, 19 b.

The partition member 3 having such angle restricting ribs 19a, 19b restricts the bending angle of the outer inclined portion 11 with respect to the horizontal portion 9 by the free ends of the angle restricting ribs 19a, 19b coming into contact with each other, and therefore, the bending angle can be controlled more reliably, and can be manufactured easily by a general resin molding method or the like.

Further, since the angle restricting ribs 19a and 19b can be adjusted in rigidity by changing the thickness, the degree of freedom in designing the partition member 3 increases. The angle restricting ribs 19a and 19b protrude toward the filling chamber 17, but are of a simple structure formed of a plate body, and do not significantly hinder the flow of foamable resin in the filling chamber 17.

The 1 st half 9a and the 2 nd half 9b of the partition member 3 of the present embodiment, which are joined via the hinge portion H1, are fixed to the upper surface 5a of the side sill 1 via the recess 18.

According to the partition member 3, since the 1 st half 9a and the 2 nd half 9b are fixed to the upper surface 5a of the side sill 1 after the 1 st half 9a and the 2 nd half 9b are folded in half in the hollow portion of the center pillar 2, the partition member 3 can be restored to the shape before folding more reliably. In this way, in the present embodiment, the formation of the gap between the inner wall surface of the center pillar 2 and the partition member 3 is suppressed as much as possible, and the foamable resin can be effectively prevented from leaking out of the filling chamber 17.

The partition member 3 of the present embodiment has a hinge portion H2 (resin hinge) for joining the outer inclined portion 11 to the outer side of the horizontal portion 9 in the vehicle width direction, and angle restricting ribs 19a and 19b are formed so as to restrict the bending angle of the hinge portion H2.

According to the partition member 3, the formation of the gap can be prevented more reliably at a position far from the mouth portion 14 outward in the vehicle width direction, that is, at a position where it is difficult for the operator to confirm the presence or absence of the gap with the inner wall surface of the center pillar 2. Thereby, the partition member 3 can more reliably prevent leakage of the foamable resin from the filling chamber 17.

The partition member 3 of the present embodiment has a wall portion 10 (injection guide rib).

According to the partition member 3, since the flow of the injected foamable resin is guided downward by the wall portion 10, the foamable resin can be supplied to a position separated from the contact portion between the inner wall surface of the center pillar 2 and the partition member 3.

This can more reliably prevent the foamable resin from leaking out of the filling chamber 17.

The partition member 3 of the present embodiment has a bent portion 13 above the inclined portion 12.

Such a partition member 3 is arranged such that the bent portion 13 extends along the inner wall surface of the center pillar 2 above the inclined portion 12, whereby the bent portion 13 stably receives the pressing force of the foamable resin that foams from below toward above the filling chamber 17. This can more reliably prevent the foamable resin from leaking out of the filling chamber 17.

Further, since the foamable resin can be more reliably prevented from leaking out above the filling chamber 17, the component disposed above the partition member 3 does not interfere with the foamable resin, and the reliability of the component can be improved.

The partition member 3 of the present embodiment has engaging portions 29a and 29b that engage with the upper surface 5a of the side sill 1 at the lower portion of the recess 18.

According to the partition member 3, it is possible to stably and easily fix the side sill 1.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments and can be implemented in various forms.

In the above embodiment, only the angle restricting rib 19 (restricting means) for restricting the bending angle around the hinge H2 is provided, but a structure may be employed in which restricting means for restricting the bending angle around the hinge H1 is provided.

In the above embodiment, the pair of the angle restricting ribs 19a and 19b is used to form the restricting mechanism, but the restricting mechanism is not limited to the rib shape, and may be another shape such as a block. The restricting mechanism is not limited to a pair of restricting mechanisms provided so long as the restricting mechanism restricts the bending angle of the partition portions joined by the hinge portions, and may be provided to any of the partition portions.

Description of the reference numerals

1. Side sill

2. Center pillar

3. Partition member

4. Side sill inner

5. Side sill outer

5A upper surface of the side sill outer

6. Inner part of middle column

7. Outer part of center pillar

8. Hollow part of center pillar

9. Substrate board

9A 1 st half

9B 2 nd half

10. Wall (injection guiding rib)

11. Outer inclined part

11A 1 st outer inclined portion

11B No. 2 outer inclined portion

12. Inclined part

12A 1 st incline portion

12B No. 2 oblique portion

14. Opening of inner member of center pillar

15. Filling hole of foaming resin

15A 1 st filling hole

15B No. 2 filling hole

17. Filling chamber for foamable resin

18. Recess portion

18A 1 st recess

18B No. 2 recess

19. Angle limiting rib (bending angle limiting mechanism)

20. Folding structure

29A engaging portion

29B engagement portion

C-body side structure

H1 Hinge part with double-folded structure

H2 Hinge part (resin hinge).

Claims (7)

1. A vehicle body side portion structure, characterized in that,

The device is provided with:

a side sill extending in a front-rear direction of a vehicle body;

A center pillar outer member extending upward from the side sill;

A center pillar inner member disposed on an inner side of the center pillar outer member in a vehicle width direction; and

A partition member disposed in a hollow portion formed by the center pillar outer and the center pillar inner and extending in a vehicle body front-rear direction,

The partition member is composed of a plurality of partition portions connected by a resin hinge, and includes a restriction mechanism for restricting the bending angle of the resin hinge,

The partition portion is formed by a pair of horizontal portions arranged in the vehicle body front-rear direction via a hinge portion, and an outer inclined portion that closes a gap with an inner wall of the center pillar outer is connected to an outer side of the horizontal portion in the vehicle width direction by the resin hinge, and the restricting mechanism is disposed between the horizontal portion and the outer inclined portion.

2. The vehicle body side structure according to claim 1, wherein,

The restricting mechanism is a pair of ribs which are respectively erected on the end edges of the separating part on the side connected by the resin hinge to face each other in a manner of facing the included angle side in the bending direction.

3. The vehicle body side structure according to claim 1, wherein,

A cylindrical recess formed by partially downwardly recessing each of the partition portions is fixed in contact with the upper surface of the side sill.

4. The vehicle body side structure according to claim 3, wherein,

The front-rear width of the outer member of the center pillar gradually spreads as it goes downward,

An inclined portion that closes a gap between a front side inner wall surface and a rear side inner wall surface of the gradually expanding center pillar is integrally formed in front of and behind the horizontal portion so as to be continuous with the horizontal portion, and injection guide ribs that guide a flow of the injected foamable resin downward are formed in the front and rear inclined portions, respectively.

5. The vehicle body side structure according to claim 4, wherein,

The inclined portion has a bent portion along an inner wall surface of the center pillar at an upper portion thereof.

6. The vehicle body side structure according to claim 3, wherein,

The partition member is formed of resin, and has an engagement portion that engages with an upper surface of the side sill at a lower portion of the recess.

7. A partition member for partitioning a filling chamber of foamable resin in a hollow portion of a center pillar, characterized in that,

The device is provided with:

A plurality of partitions connected by resin hinges; and

A limiting mechanism for the bending angle of the resin hinge,

The partition portion is formed by a pair of horizontal portions arranged in the vehicle body front-rear direction via a hinge portion, an outer inclined portion that closes a gap with an inner wall of a center pillar outer is connected to an outer side of the horizontal portion in the vehicle width direction by the resin hinge, and the restricting mechanism is disposed between the horizontal portion and the outer inclined portion.