CN114302843A - Vehicle body side structure and partition member - Google Patents

Abstract

The vehicle body side 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 (7) that extends upward from the side sill (1); a center pillar inner (6) that is disposed on the vehicle width direction inner side of the center pillar outer (7); and a partition member (3) that is disposed in a hollow portion formed by the center pillar outer (7) and the center pillar inner (6) and extends in the front-rear direction of the vehicle body, wherein the partition member (3) is configured from a plurality of partition portions (a horizontal portion (9) and an outer inclined portion (11)) that are connected by a resin hinge (a hinge portion (H2)), and is provided with a 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 invention relates to a vehicle body side structure and a partition member.

Background

Conventionally, a vehicle body side portion structure is known 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, see patent document 1). In this vehicle body side portion 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).

Documents of the prior art

Patent document

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

Disclosure of Invention

In addition, in the conventional vehicle body side portion structure (for example, see patent document 1), the partition member is partially foldable to facilitate handling in the narrow hollow portion of the center pillar. Specifically, the partition member inserted into the center pillar from the predetermined opening in the folded state is expanded again to partition the hollow portion of the center pillar, thereby forming a filling chamber of the foamable resin.

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

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

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

The partition member of the present invention for solving the above problems is a partition member for partitioning a filling chamber of a 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 structure and the partition member of the present invention, leakage of the foamable resin from the predetermined filling chamber can be more reliably prevented.

Drawings

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

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

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

Fig. 4A is an overall perspective view of the partition member according to the 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 viewed from the outside of the vehicle body.

Fig. 5B is a plan 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 viewed from the front side of the vehicle body.

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

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

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

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

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

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

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

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

Detailed Description

Next, a vehicle body side structure for implementing an embodiment (present embodiment) of the present invention will be described in detail with reference to the drawings as appropriate. The directions of the vertical, front, and rear arrows in the drawings referred to correspond to the vertical, front, and rear directions of the vehicle body. The directions of the arrows inside and outside the drawing correspond to the inside and outside of the vehicle body in the vehicle width direction.

The partition member constituting the vehicle body side 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 having a mechanism for restricting a folding angle at the time of folding.

Hereinafter, the vehicle body side structure will be described by taking as an example a vehicle body side structure in which a filling chamber of a foamable resin is formed by partitioning a hollow portion of a center pillar by a partition member. Incidentally, the filling structure of the foamable resin in the center pillar functions to prevent road noise generated during traveling of the automobile and wind noise of vehicle body components from being transmitted 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.

However, only the structure of the vehicle-side portion disposed on the left side portion of the vehicle body will be described below, and the description of the structure of the vehicle-side portion disposed on the right side portion of the vehicle body, which is symmetrical with the structure of the vehicle-side portion on the left side portion across the center line in the 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, for convenience of drawing the hollow portion 8 of the center pillar 2, the center pillar outer 7 is shown by a phantom line (two-dot chain line).

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

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

The side sill inner 4 has a hat shape that opens outward in the vehicle width direction when viewed in a cross section that intersects the vehicle body front-rear direction. The side sill outer 5 has a hat shape that is open to the inside in the vehicle width direction when viewed in a cross section that intersects the vehicle body front-rear direction.

The flanges of the side sill inner 4 and the side sill outer 5 corresponding to the hat-shaped edge portions thereof are joined to each other by spot welding or the like. Thereby, the bulging portions corresponding to the respective hat-shaped roof portions are integrated with each other, and the side sill 1 is formed into a closed cross section.

The center pillar inner 6 constituting the center pillar 2, which will be described later, 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 flanges of the side sill outer 5 so as to be superposed in three.

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 outside in the vehicle width direction.

As described later, a circular hole 30a and an elongated hole 30b (see fig. 6) which are mounting holes for the partition member 3 are formed in the upper surface 5 a.

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

These reinforcing members are disposed so as to extend in the vehicle body longitudinal direction at the upper corner portion and the lower corner portion of the hat-shaped roof portion of the side sill inner 4. The reinforcing members are disposed so as to extend in the vehicle body longitudinal direction at the upper corner portion and the lower corner portion of the hat-shaped roof portion of the side sill outer 5.

< center pillar >

The center pillar 2 (see fig. 1) is a hollow column extending in the vertical direction at the side of the vehicle body.

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 side toward the upper side.

Such a center pillar 2 includes a center pillar inner 6 disposed on the inside in the vehicle width direction and a center pillar outer 7 disposed on the outside in the vehicle width direction.

(inner part of center post)

As described above, the center pillar inner 6 is formed of a substantially plate body extending upward from the lower side sandwiched 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 substantial outer shape of the center pillar 2 in a side view seen 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 of the side sill 1 and extends so as to gradually narrow the width in the vehicle body longitudinal direction as it goes upward. Specifically, both edge portions in the vehicle body longitudinal direction at the lower portion of the center pillar inner 6 draw gentle curves so as to be recessed downward.

Further, the center pillar 2 in the present embodiment is formed so that the curve formed on the front side in the vehicle body longitudinal direction draws a more gentle arc than the curve formed on the rear side because it is slightly inclined toward the rear side as described above.

Further, a substantially rectangular opening 14 is provided in a lower portion of the center pillar inner 6 substantially at the center in the vehicle body longitudinal direction.

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

Further, a filling hole 15 for foamable resin described later is formed in the lower portion of the center pillar inner 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 and 15b are disposed across the lower portion of the opening 14 in the vehicle body longitudinal direction.

Specifically, the filling hole 15a is formed below the 1 st inclined portion 12a of the partition member 3 described later. The filling hole 15b is formed below the 2 nd inclined portion 12b of the partition member 3 described later.

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

(center pillar outer member)

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

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

As shown in fig. 2, the center pillar outer 7 has a hat shape that is open to the inside in the vehicle width direction in a cross-sectional view that intersects the vertical direction.

Both flanges of the center pillar outer 7 corresponding to the hat-shaped edge portions are joined to both edges of the center pillar inner 6 in the vehicle body longitudinal direction by spot welding or the like.

Thus, 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 extends so as to gradually narrow the width in the vehicle body longitudinal direction as it goes upward.

In the center pillar outer 7, as shown in fig. 2, the hollow portion 8 is formed between the bulging portion corresponding to the top of the hat shape and the center pillar inner 6.

Note that, the hollow portion 8 shown in fig. 2 is formed above the partition member 3 described later, and reference numeral 14 denotes an opening portion of the center pillar inner 6.

The shape of the hollow portion 8 in the present embodiment is a substantially isosceles trapezoid shape having an upper base shorter than a lower base and located outside in the vehicle width direction in the cross-sectional shape shown in fig. 2 intersecting the vertical direction.

In fig. 2, reference numeral 16 denotes a clip in which a spacer (not shown) is attached to an inner wall surface of the center pillar outer 7. The clip 16 is disposed at a position corresponding to the recess 23 of the partition member 3 in the vertical direction as described later.

In fig. 2, for convenience of drawing, the reinforcement disposed on the inner wall surface of the center pillar outer 7 is not shown.

As shown in fig. 1, the side surfaces of the center pillar outer 7 in the vehicle body longitudinal direction gradually expand (gradually expand) from the upper side toward the lower side (a japanese tail Wide "" り). The lower portion of the side surfaces of the center pillar outer 7 extends along the upper surface 5a of the side sill outer 5.

The lower portion of the side surfaces of the center pillar outer 7 is 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 side surface 21 of the center pillar outer 7 in the vehicle width direction is inclined so as to be displaced outward in the vehicle width direction from above downward.

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

The overlapping portion of the lower end portion 21a of the center pillar outer 7 is joined to the outer 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 portion of the center pillar inner 6. Reference numeral 16 denotes the above-described spacer mounting clip, and reference numeral 3 denotes a partition member to be described next. In fig. 3, for convenience of drawing, the reinforcement disposed on the inner wall surface of the center pillar outer 7 is not shown.

< separation part >

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 sectional view of IVb-IVb of fig. 4A. Fig. 5A is a front view of the partition member 3 in fig. 1 as viewed from the outside of the vehicle body, fig. 5B is a plan 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 as viewed from the front side of the vehicle body, and fig. 5E is a side view of the partition member 3 in fig. 1 as 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 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 double-folded structure, a hinge portion H2 of the outer inclined portion 11, an angle restricting rib 19 of the hinge portion H2, a recessed portion 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 regulating rib 19 corresponds to a so-called "bending angle regulating means" in the claims, and the wall portion 10 corresponds to a so-called "injection guide rib" in the claims.

Incidentally, the partition member 3 in the present embodiment is conceived of an integrally molded article formed of a synthetic resin.

(horizontal part)

As shown in fig. 5A to 5C, the horizontal portion 9 is formed by joining the 1 st half body 9a and the 2 nd half body 9b arranged in the vehicle body longitudinal direction via a hinge portion H1. 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 the general portion of the horizontal portion 9. The hinge portion H1 partially joins the 1 st half body 9a and the 2 nd half body 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 structure having a double-folded structure 20 (see fig. 7B) in which the 1 st half body 9a and the 2 nd half body 9B are folded in two so as to face each other by the hinge portion H1.

The 1 st half body 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 body 9a is a substantially rectangular trapezoid having an oblique side 9a1 at the front end in the vehicle body longitudinal direction.

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

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

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

(inclined part)

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

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

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

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

As shown in fig. 5A and 5B, the 1 st inclined part 12a is slightly curved so as to be convex 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 6. As shown in fig. 1, the 2 nd side 26b of the 1 st inclined portion 12a is disposed so as to be along the inner wall surface of the side portion on the front side in the vehicle body longitudinal direction of the center pillar outer 7.

The 2 nd inclined portion 12B has a substantially triangular shape in a plan view shown in fig. 5B. The base of the substantially triangular shape of the 2 nd inclined portion 12b is connected to the oblique side 9b1 of the 2 nd half cell 9 b. In addition, in the 2 nd inclined portion 12B, the 1 st side 27a of the substantially triangular shape extends in the substantially vehicle body front-rear direction 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.

Such a 2 nd inclined portion 12b is inclined so as to be gradually displaced upward toward the rear side in the vehicle body longitudinal 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 be convex upward.

Thus, the 1 st side 27a of the 2 nd inclined portion 12b is disposed along the inner wall surface of the center pillar inner 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 side portion on the rear side in the vehicle body longitudinal direction 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 to increase upward with respect to 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 an angle toward the front side with respect to the 1 st inclined portion 12 a. In addition, the bent portion 13b of the 2 nd inclined portion 12b is inclined so as to change the angle to the rear side 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 along the inner wall surface of the center pillar 2.

(outer inclined part)

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

As shown in fig. 5B and 5C, the outer inclined portion 11 includes a1 st outer inclined portion 11a disposed on the 1 st half body 9a side and a 2 nd outer inclined portion 11B disposed on the 2 nd half body 9B side.

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

The 1 st and 2 nd externally inclined portions 11a and 11b are respectively attached to the 1 st and 2 nd half bodies 9a and 9 via independent hinge portions H2 and H2 (resin hinges).

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

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

(Angle restriction rib)

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

As shown in fig. 4B, the angle restricting rib 19 as a restricting mechanism of the bending angle is disposed 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 composed of an angle restricting rib 19a formed at an end edge of the horizontal portion 9 on the side connected to 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 to 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 and 19b are erected toward the included angle side between the horizontal portion 9 and 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.

Thereby, as shown in fig. 4A, the angle restricting ribs 19 are aligned along the broken 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 an imaginary line (two-dot chain line) abuts against the angle restricting rib 19a, thereby restricting the bending angle of the outer inclined portion 11.

(depressed portion)

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

As shown in fig. 5A, the recessed portion 18 includes a1 st recessed portion 18a disposed on the 1 st half cell 9a side and a 2 nd recessed portion 18b disposed on the 2 nd half cell 9b side.

The 1 st recessed portion 18a and the 2 nd recessed portion 18b are formed to protrude downward from the 1 st half body 9a and the 2 nd half body 9b, respectively.

As shown in fig. 5B, the 1 st recessed portion 18a is disposed substantially at the center of the 1 st half body 9a in the vehicle body longitudinal direction. As shown in fig. 5B, the 2 nd recessed portion 18B is disposed near the oblique side 9B1 of the 2 nd half body 9B.

As shown in fig. 5A, the 1 st and 2 nd recessed portions 18a, 18b have base portions 28a, 28b and engaging portions 29a, 29b, respectively. In the following description, the base 28a and the base 28b are simply referred to as the base 28 when they are not distinguished from each other.

The base portion 28 has a substantially circular truncated cone shape whose diameter decreases with increasing distance from the lower surface of the 1 st half body 9a and the lower surface of the 2 nd half body 9 b.

As shown in fig. 5A to 5C, the base portions 28 are formed by partially recessing the plate bodies constituting the 1 st half cell 9a and the 2 nd half cell 9b downward. That is, the base portions 28 are formed of a bottomed cylindrical body having an open upper side and a closed lower side. Incidentally, in fig. 3, the axis of the base portion 28 indicated by the reference numeral Ax extends orthogonally to the upper surface 5a of the side sill outer 5.

When the engagement portions 29a and 29b (see fig. 5A) are engaged with the upper surface 5A (see fig. 1) of the side sill outer 5 as described later, the base portion 28 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 engaging portions 29a and 29b are configured to be snap-fitted into a circular hole 30a (see fig. 6) and a long hole 30b (see fig. 6), which will be described later. The engaging portions 29a and 29b in the present embodiment are assumed to have a projection having a barb which hooks the periphery of the hole portion on the back side when the engaging portions are fitted into the circular hole 30a and the elongated hole 30b, respectively, but the present invention is not limited to this.

Next, the circular hole 30a (see fig. 6) and the elongated hole 30b (see fig. 6) with which the engagement portions 29a and 29b (see fig. 5A) are engaged will be described.

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

As shown in fig. 6, a circular hole 30a and an elongated hole 30b are formed in the upper surface 5A of the side sill outer 5 so as to correspond to the engagement portions 29a and 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 the elongated holes 30b penetrate the plate material forming the side sill outer 5.

As shown in fig. 1, the circular hole 30a (see fig. 6) with which the engagement portion 29a (see fig. 5A) is engaged serves as a main reference when positioning the partition member 3 with respect 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 elongated 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 described later, when the engagement portion 29a (see fig. 5A) is engaged with the circular hole 30a (see fig. 6) and then the engagement portion 29b (see fig. 5A) is engaged with the long hole 30b (see fig. 6), the long hole 30b absorbs a slight shift in the front-rear direction of the engagement portion 29b and engages with the engagement portion 29 b.

(wall part)

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

As shown in fig. 1, the wall 10 in the present embodiment faces the filling hole 15 (hole) 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 a flow of a filler (foamable resin) described later downward when the filler is injected into the hollow portion 8 of the center pillar 2 through the filling hole 15.

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

When the partition member 3 as described above 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 5 a.

The outer inclined portion 11 attached to the horizontal portion 9 so as to be rotatable about the hinge portion H2 is restricted from moving upward by the outer edge portion in the vehicle width direction coming into contact with the inner wall surface of the inclined center pillar outer 7.

In the vehicle body side structure C in which the 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 in the vertical direction by the partition member 3.

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

The wall 10 of the partition member 3 faces the filling hole 15 (hole portion).

< method for manufacturing side structure of vehicle body >

Hereinafter, a method for manufacturing the vehicle body side portion structure C according to the present embodiment will be described while mainly illustrating 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 by folding the outer inclined portion 11 of the partition member 3.

Fig. 7B is an explanatory diagram 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 two.

Fig. 7C is an explanatory diagram of the 3 rd step in the method for 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 diagram of the 4 th step in the method for manufacturing the vehicle body side portion structure C in which the partition member 3 is expanded in the hollow portion 8 of the center pillar 2 and attached to the upper surface 5a of the side sill outer 5.

In the first step of this 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 is a 2 nd recessed portion, and reference numeral 12b is a 2 nd inclined portion.

Next, in the 2 nd step of this manufacturing method, as shown in fig. 7B, the horizontal portion 9 of the partition member 3 is folded in two about the hinge portion H1. Thereby, the 1 st half body 9a and the 2 nd half body 9b of the horizontal portion 9 face each other.

In fig. 7B, reference numeral 12a denotes a1 st inclined portion, and reference numeral 12B denotes a 2 nd inclined portion. Reference numeral 18a is a1 st recess, and reference numeral 18b is a 2 nd recess.

Next, in the 3 rd step of this manufacturing method, as shown in fig. 7C, the partition member 3 folded in two is disposed above the side sill outer 5 from the vehicle interior side (the back side of the paper plane in fig. 7C) via the opening portion 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.

Thereafter, the engaging portion 29a of the 1 st recessed portion 18a is brought close to the circular hole 30 a. 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 an upper surface of the side sill outer 5. Further, reference numeral 30b denotes a long hole with which the engagement portion 29b of the 2 nd recessed portion 18b is engaged.

The outer inclined portion 11a abuts against 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 front side by the recess 23 (see fig. 2).

Next, in the 4 th step of this manufacturing method, as shown in fig. 7D, the 1 st half body 9a of the horizontal portion 9 is disposed so as to be along the upper surface 5a of the side sill outer 5. At the same time, the 2 nd half body 9b is unfolded relative to the 1 st half body 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 abuts against 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 recess 23 (see fig. 2).

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

When the engaging portion 29b of the 2 nd recessed portion 18b is inserted into the elongated hole 30b, the position of the engaging portion 29b may be slightly displaced in the vehicle longitudinal direction depending on the degree of expansion of the 1 st half body 9a and the 2 nd half body 9 b.

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

Thus, the long hole 30b absorbs slight displacement of the engaging portion 29b in the front-rear direction and engages with the engaging portion 29 b.

When the engaging portions 29a and 29b are engaged with the circular hole 30a and the elongated hole 30b, respectively, the base portion 28a of the 1 st recessed portion 18a and the base portion 28b of the 2 nd recessed 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 body 9a and the 2 nd half body 9b) are horizontal.

Thereby, a 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 as described above.

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

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

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

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

The foamable resin after curing in the present embodiment is assumed to be a rigid polyurethane foam, but is not limited thereto, and may be another curable foamable resin.

The rigid polyurethane foam of the present embodiment is formed by foaming a polyurethane foam stock solution and then curing the foam.

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

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 and injected from the filling hole 15 into the filling chamber 17, the liquid foamable resin R 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.

Thereafter, the foamable resin R starts a crosslinking reaction to foam, and the foam gradually fills the filling chamber 17. 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 on the vehicle width direction outer side 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 hits the wall portion 10 functioning as the guide plate. Then, the foamable resin R changes the flow direction downward by the wall portion 10.

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

< action 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 connected by a hinge portion H2 (resin hinge), that is, a horizontal portion 9 and an outer inclined portion 11. 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 expanded in the hollow portion of the center pillar 2, the shape is restored more reliably before bending. Thus, 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 leakage of the foamable resin from the filling chamber 17 can be effectively prevented.

The bending angle regulating means is constituted by a pair of angle regulating ribs 19a and 19 b.

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

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

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

According to the partition member 3, after the 1 st half cell 9a and the 2 nd half cell 9b folded in two are expanded in the hollow portion of the center pillar 2, the 1 st half cell 9a and the 2 nd half cell 9b are fixed to the upper surface 5a of the side sill 1, and therefore, the shape of the partition member 3 before bending can be restored more reliably. Thus, 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 leakage of the foamable resin from the filling chamber 17 can be effectively prevented.

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

According to such a partition member 3, the formation of the gap can be more reliably prevented at a position away from the opening 14 toward the outside in the vehicle width direction, that is, at a position where the presence or absence of the gap with the inner wall surface of the center pillar 2 is difficult to be confirmed by an operator. This enables the partition member 3 to more reliably prevent the 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 of the partition member 3 from the inner wall surface of the center pillar 2.

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.

The partition member 3 is arranged such that the bent portion 13 is along the inner wall surface of the center pillar 2 above the inclined portion 12, and thus the bent portion 13 stably receives the pressing force of the foamable resin that foams upward from below 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 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 recessed portion 18.

According to such a partition member 3, it is possible to stably and easily fix it to 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 regulating rib 19 (regulating means) for regulating the bending angle around the hinge H2 is provided, but a regulating means for regulating the bending angle around the hinge H1 may be provided.

In the above embodiment, the restricting means is constituted by the pair of angle restricting ribs 19a, 19b, but the restricting means is not limited to the rib shape, and may be another shape such as a block. The restricting mechanism is not limited to a structure in which a pair of the partition portions are provided, and may be a structure in which any one of the partition portions is provided, as long as the restricting mechanism can restrict the bending angle between the partition portions joined by the hinge portion.

Description of the reference numerals

1 lower longitudinal beam

2 center post

3 separating element

4 inner part of lower longitudinal beam

5 side sill outer member

5a Upper surface of side sill outer

6 center pillar inner part

7 center pillar outer

Hollow part of 8 center pillar

9 base plate

9a half No. 1

9b half 2

10 wall part (injection guide rib)

11 outer inclined part

11a 1 st outer inclined part

11b 2 nd outer inclined part

12 inclined part

12a 1 st inclined part

12b 2 nd inclined part

14 opening part of pillar inner part

15 filling hole of foamable resin

15a 1 st fill hole

15b 2 nd filling hole

17 filling chamber for foamable resin

18 recess

18a 1 st recess

18b 2 nd recess

19 Angle restriction rib (bending angle restriction mechanism)

20 double-fold structure

29a engaging part

29b engaging part

C vehicle body side structure

H1 hinge part with double-fold structure

H2 hinge section (resin hinge).

Claims (8)

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

the disclosed device is provided with:

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

a center pillar outer extending upward from the side sill;

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

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

the partition member is composed of a plurality of partitions connected by resin hinges, and includes a mechanism for restricting a bending angle of the resin hinges.

2. The vehicle body side construction according to claim 1,

the restricting means is a pair of ribs that are vertically opposed to each other so as to face a corner side in a bending direction at end edges of the partition portion that are connected by the resin hinge.

3. The vehicle body side construction according to claim 1,

the partition portions are arranged in a pair via hinge portions in the vehicle body front-rear direction to form a horizontal portion, and a cylindrical recessed portion formed by partially recessing each partition portion downward is fixed in contact with the upper surface of the side sill.

4. The vehicle body side construction according to claim 3,

a partition portion constituting an outer inclined portion that closes a gap with an inner wall of the center pillar outer is connected to the outer side of the horizontal portion in the vehicle width direction by the resin hinge, and the regulating mechanism is disposed between the horizontal portion and the outer inclined portion.

5. The vehicle body side construction according to claim 3,

the front-rear width of the center pillar outer gradually expands downward,

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

6. The vehicle body side construction according to claim 5,

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

7. The vehicle body side construction according to claim 3,

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

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

the disclosed device is provided with:

a plurality of partitions connected by resin hinges; and

and a mechanism for restricting a bending angle of the resin hinge.

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