JP2020083084A - Vehicle cross section hat member - Google Patents

Abstract

To ensure desired coupling strength even when a coupling position is changed to a lower side than that in a conventional one.SOLUTION: A front pillar has: a pair of flange parts of which cross section extends in a vehicle front and rear direction; a pair of leg parts of which cross section extends in a substantially vehicle width direction; and a body part located between the pair of leg parts. The front pillar that is a vehicle cross section hat member opened in the outside in the vehicle width direction includes a front pillar inner upper located in an upper side of a vehicle vertical direction, and a front pillar inner lower located in a lower side of the vehicle vertical direction. The body part has a plurality of joint points in which a lower end of the front pillar inner upper and an upper end of the front pillar inner lower are joined by spot welding, and the plurality of joint points are arranged in a substantially U-shape when viewed from a side surface from the vehicle width direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle cross-section hat member used for vehicles such as automobiles.

For example, Patent Document 1 discloses a vehicle body structure in which a hinge bracket is joined and fixed to the back surface of a lower door hinge mounting portion of a front pillar configured in a box-shaped cross section by a front pillar outer and a front pillar. ..

In Patent Document 1, it is stated that the lower end portion of the front pillar and the front end portion of the side sill can be firmly coupled to each other by such a configuration.

Japanese Utility Model Publication No. 63-123371

By the way, for example, when attaching an engine hood opener to the lower side of the front pillar, the connecting position between the lower end portion of the front pillar upper and the upper end portion of the front pillar lower, which are divided and configured, is set downward in comparison with the conventional one. Need to change.

However, if the connecting position of the lower end of the front pillar upper and the upper end of the front pillar lower is changed downward, for example, when an offset collision load is input to the front part of the vehicle body, the front pillar upper and the front pillar lower are There is a risk that the binding site with will peel off.

The present invention has been made in view of the above points, and even when the connecting position is changed to the lower side as compared with the related art, a vehicle cross-section hat capable of ensuring a desired connecting strength. It is intended to provide a member.

In order to achieve the above-mentioned object, the present invention provides a pair of flange portions whose cross section extends in the vehicle front-rear direction, a pair of leg portions whose cross section extends substantially in the vehicle width direction, and between the pair of leg portions. A vehicle cross-section hat member having a main body portion located therein and opening to the vehicle width direction inner side or the vehicle width direction outer side, wherein the vehicle cross section hat member is an upper portion located on the vehicle vertical direction upper side, and a vehicle At least the main body portion has a plurality of fixing points at which the upper portion and the lower portion are connected, and the plurality of fixing points are side surfaces in the vehicle width direction. It is characterized in that it is arranged in a substantially U-shape when viewed.

According to the present invention, it is possible to obtain a vehicle cross-section hat member capable of ensuring a desired joining strength even when the joining position is changed to the lower side as compared with the conventional case.

1 is a partially cutaway side view showing a vehicle body side portion to which a vehicle cross-section hat member according to an embodiment of the present invention is applied. It is a partial expansion fracture|rupture side view of FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. FIG. 3 is a partially cutaway side view showing a state in which a side sill reinforcement is exposed by removing the front lining lower from the state shown in FIG. 2. FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4. FIG. 5 is a vertical sectional view taken along line VI-VI of FIG. 4. FIG. 6 is a partially enlarged side view showing a plurality of joint points arranged in a substantially U shape at a joint portion between a front pillar upper and a front pillar lower. It is a side view of the front pillar lower where the cross-section hat member for vehicles concerning the 1st comparative example which the present applicant devised was applied. FIG. 8B is a side view corresponding to FIG. 8A and showing the front pillar lower of the vehicle cross-section hat member according to the present embodiment. It is a side view which shows the state in which the offset load F was input with respect to the front linear lower to which the vehicle cross-section hat member concerning the second comparative example devised by the present applicant was applied. FIG. 9B is a side view showing a state in which the offset load F is input in the present embodiment shown in FIG. 8B. FIG. 9B is an explanatory diagram showing a state where the front pillar lower is deformed into an inverted conical shape when the offset load F is input in the second comparative example shown in FIG. 9A. It is explanatory drawing which shows the number of spots of spot welding arrange|positioned in 1st and 2nd comparative example and this embodiment in a fixed width. In the present embodiment, it is a schematic diagram showing a state in which peeling stress is uniformly input to a plurality of joint points arranged in a substantially U shape. It is explanatory drawing which shows the space|interval of a some joint point.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a partially cutaway side view showing a vehicle body side part to which a vehicle cross-section hat member according to an embodiment of the present invention is applied, FIG. 2 is a partially enlarged cutaway side view of FIG. 1, and FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. In each figure, "front and rear" indicates the vehicle front and rear direction, "up and down" indicates the vehicle up and down direction, and "left and right" indicates the left and right direction (vehicle width direction) as viewed from the driver's seat.

As shown in FIG. 1, a vehicle body side portion 10 of a vehicle to which a vehicle cross-section hat member (front pillar lower structure) according to an embodiment of the present invention is applied includes a front pillar 12, a side sill 14, and a center pillar 15. Is configured. Note that FIG. 1 is a diagram of the right side vehicle body side portion 10 as viewed from the vehicle interior, and the left side vehicle body side portion is also arranged symmetrically with the right side vehicle body side portion 10.

The side sill 14 is arranged below the vehicle body side portion 10 so as to extend along the vehicle front-rear direction, and supports a side portion of a floor panel (not shown). The front pillar 12 is arranged at the vehicle front end of the side sill 14 and is arranged so as to stand upright along the vehicle vertical direction.

As shown in FIG. 3, the front pillar 12 has a front pillar liner 16 located on the passenger compartment side and a front pillar outer 18 located on the outer side of the vehicle.

As shown in FIG. 2, the front pillar 16 is divided along the vehicle up-down direction, and the front pillar upper (upper) 20 located on the upper side in the vehicle up-down direction and the lower position on the lower side in the vehicle up-down direction. Front front line lower (lower part) 22 is provided. The front liner lower 22 has a hat shape in cross section (see FIG. 3) and functions as a vehicle cross section hat member that is open outward in the vehicle width direction.

Like the front pillar liner 16, the front pillar outer 18 is divided along the vehicle vertical direction, and the front pillar outer 18 is located above the vehicle vertical direction and the front pillar outer is located below the vehicle vertical direction. It is equipped with Piraa Taroa.

The front pillar lower 22 is composed of a pair of flange portions 24, 24, a pair of leg portions 26, 26, and a main body portion 28. The pair of flange portions 24, 24 are located at a vehicle front end portion and a vehicle rear end portion of the front pilot lower 22 and have a transverse section extending in the vehicle front-rear direction. The pair of leg portions 26, 26 is continuous with each flange portion 24 and has a cross section extending substantially in the vehicle width direction. The main body portion 28 is located between the pair of leg portions 26, 26, and connects one leg portion 26 on the vehicle front side and the other leg portion 26 on the vehicle rear side.

The body portion 28 and each flange portion 24 have a plurality of joining points (fixing points) 30 that integrally join the lower end portion of the front pillar upper 20 and the upper end of the front pillar lower 22. The plurality of joint points 30 are spot-welded by using, for example, a spot welding device (not shown). An opening 32 that opens upward in the vehicle vertical direction is formed at the center of the upper portion of the main body 28. A pair of protrusions 34, 34 are provided on both sides of the opening 32 along the vehicle front-rear direction.

A plurality of joint points 30 are arranged in a substantially U-shape in a side view from the vehicle width direction at a lower vicinity of the opening 32 including the pair of protrusions 34, 34. The plurality of joint points 30 are arranged in a substantially U shape that opens upward in the vehicle vertical direction. Further, the plurality of joint points 30 are located below the upper end 36a of the wheel (right front wheel) 36 when viewed from the side in the vehicle width direction (see FIG. 1). The interval S between the centers of a plurality of adjacent joint points 30 is about 15 mm. In addition, although the case where four joining points 30 are arranged is illustrated in the present embodiment, the number of the plurality of joining points 30 is not limited to this.

As shown in FIG. 2, the flange portion 24 on the vehicle front side is provided with a plurality of joint points 31a along the vehicle vertical direction. Further, on the flange portion 24 on the vehicle rear side, a plurality of joint points 31b are arranged in a substantially arc shape from above the flange portion 24 toward below.

Further, the main body portion 28 has a pair of constricted portions 38, 38 constricted in the vehicle front-rear direction at a joint portion between a lower end portion of the front pilot liner upper 20 and an upper end portion of the front pilot liner lower 22. (Refer to the thick broken line in FIG. 2). The pair of constricted portions 38, 38 are formed by a ridgeline between the main body portion 28 and the leg portion 26, and extend over both the front and upper front liner uppers 20 and 22. ..

The pair of constricted portions 38, 38 are located on the vehicle front side of the body portion 28 and are located on the vehicle rear side of the body portion 28 and one constricted portion 38 constricted toward the vehicle rear side in a substantially arc shape. And the other constricted portion 38 which is curved and constricted toward the vehicle front side.

The constricted portion 38 on the vehicle rear side has a bead portion 40 (see FIG. 3) provided on the leg portion 26 on the vehicle rear side. The bead portion 40 extends along the longitudinal direction of the leg portion 26, and has a fan-shaped cross section in the vehicle vertical direction (see FIG. 3 ). The bead portion 40 is continuously provided not only on the front pillar lower 22 but also on the front pillar upper 20.

A pair of projecting portions 34, 34 is provided at the upper end of the main body portion 28 of the front pillar lower 22 so as to project upward in the vehicle. Two joint points 30 located at the upper ends of the substantially U-shape are arranged on the pair of protrusions 34, 34, respectively.

A side sill reinforcement 42, which will be described later, is arranged between the upper front liner 20 and the lower front liner 22. The lower end portion of the front pillar upper 20 is sandwiched between the front pillar lower 22 and the side sill reinforcement 42. In other words, the plurality of joint points 30 arranged in a substantially U-shape when viewed from the side in the vehicle width direction include the lower end portion of the front pillar upper 20 and the upper end of the front pillar lower 22 and the side sill reinforcement 42. It is configured as a welding point by spot welding of three sheets consisting of and.

As shown in FIG. 5, the side sill 14 includes a side sill inner 44 located on the vehicle compartment side (vehicle width direction inner side), a side sill outer 46 located on the vehicle outer side (vehicle width direction outer side), and a vehicle front side of the side sill 14. It has a side sill inner force 44 and a side sill reinforcement 42 disposed between the side sill inner 44 and a side sill outer 46. A flat plate-shaped jack-up plate 48 (see FIG. 4) is attached to the vehicle front side at the lower end of the side sill 14 (side sill inner 44).

As shown in FIG. 4, the jack-up plate 48 has a substantially rectangular shape when viewed from the side and is made of a metal material having high rigidity and strength. The "jack-up plate 48" is a member in which a jack (not shown) is brought into contact with the jack-up plate 48, and the clearance between the vehicle body and the road surface is adjusted (jack-up) by operating a jack (not shown).

Further, as shown in FIG. 5, the lower portion of the side sill reinforcement 42 is coupled so as to close the opening of the side sill inner 44 having a hat-shaped cross section. At the same time, as shown in FIG. 6, the upper portion of the side sill reinforcement 42 is coupled so as to close the hat-shaped cross-section opening of the front liner 16 (front liner lower 22). The space portion on the side sill inner 44 side closed by the side sill reinforcement 42 and the space portion on the front pillar 16 side are arranged adjacent to each other in the vehicle vertical direction (see FIG. 5 ).

Furthermore, as shown in FIG. 4, a part of the side sill reinforcement 42 is extended to the front pillar side. That is, the upper portion of the side sill reinforcement 42 has the extending portion 50 that bends and extends toward the inside in the vehicle width direction as it goes upward from the intermediate portion in the vehicle vertical direction. The extension end 52, which is the upper end of the extension portion 50, extends to the plurality of joint points 30 arranged in a substantially U shape.

Furthermore, the side sill reinforcement 42 is joined to the side sill 14 (side sill inner 44) at three points including the first to third joining points 54a to 54c. The first joint point 54 a is located at the lower end of the side sill reinforcement 42 and ahead of the jack-up plate 48 in the vehicle. The second joint point 54b is located at the lower end of the side sill reinforcement 42, and is located rearward of the jack-up plate 48 in the vehicle. The third joint point 54c is located between the first joint point 54a and the second joint point 54b in the vehicle front-rear direction, and is located above the jack-up plate 48. When viewed from the side, a triangle 56 is formed by connecting the first to third joining points 54a to 54c.

As shown in FIG. 4, a fragile portion 55a is provided between the first joint point 54a and the vehicle front end portion 48a of the jackup plate 48. Further, another fragile portion 55b is provided between the vehicle rear end portion 48b of the jack-up plate 48 and the second joint point 54b.

The vehicle body side portion 10 to which the vehicle cross-section hat member according to the present embodiment is applied is basically configured as described above, and the operation and effect thereof will be described next.

FIG. 8A is a side view of a front pilot lower according to the first comparative example devised by the applicant of the present invention, and FIG. 8B corresponds to FIG. 8A and relates to the present embodiment. FIG. 9A is a side view of the front pilot liner lower to which the vehicle cross-section hat member is applied. FIG. 9A is a front view of the vehicle front cross-section hat member according to the second comparative example devised by the applicant. FIG. 9B is a side view showing a state in which the offset load F is input, and FIG. 9B is a side view showing a state in which the offset load F is input in the present embodiment shown in FIG. 8B. Further, in the first comparative example shown in FIG. 8A, the joining position between the front pillar upper and the front pillar lower is set to a conventional position higher than that of the present embodiment shown in FIG. 8B. On the other hand, in the second comparative example shown in FIG. 9A, the joining position between the front pillar upper and the front pillar lower is set to the same position as in the present embodiment shown in FIG. 9B. In addition, in the first and second comparative examples, the same reference numerals are given to the same components as the present embodiment.

In the first comparative example shown in FIG. 8A, the lower end portion of the front pillar liner upper 20 and the upper end portion of the front pillar liner lower 22 which form the front pillar liner 16 are linearly arranged along the horizontal direction. It is joined at three spot welding points 33. The second comparative example is also the same as the first comparative example in that it is joined at three spot welding points 33 linearly arranged in the horizontal direction. The front pillar lower 22 and the front pillar upper 20 are each configured to have a hat-shaped cross section.

In the second comparative example shown in FIG. 9A, when the offset load F is input from the vehicle front side, a load parallel to the vehicle front-rear direction with respect to the main body portion 28 of the front pilot lower 22 having a hat-shaped cross section. Works. The load parallel to the vehicle front-rear direction means a load that the front wheel 36 retracts rearward of the vehicle and pushes the front end of the front pillar 12 rearward of the vehicle in an offset collision test (ODB test) mode in an offset collision. .

As a result, in the second comparative example, the front pillar lower 22 has a hat cross-sectional shape that opens toward the outside, so that a load in the vehicle front-rear direction is input and the front pillar lower 22 moves inward and downward. It becomes an inverted conical shape bulging (see FIG. 10). As a result, in the second comparative example, the spot welding point 33 of the front pipeline lower 22 may peel off.

On the other hand, in the present embodiment, a plurality of (four) junction points 30 are arranged in a substantially U shape along the opening 32 of the front pilot lower 22 (see FIG. 7). As a result, in the present embodiment, it is possible to hit many spots in a region of a constant width, and the load input to the front linear lower 22 is distributed to many joining points 30. As shown in FIG. 11, for example, in the first and second comparative examples, three spot welding points 33 can be spotted by spot welding in a constant width, whereas in the present embodiment, the height is three points. Within the range having a width in the direction, four joining points 30 can be spotted by spot welding.

Therefore, in this embodiment, the peeling load which one joint point 30 bears can be reduced as compared with the first and second comparative examples. As a result, in this embodiment, it becomes difficult to separate the lower end portion of the front pilot liner upper 20 and the upper end portion of the front pilot liner lower 22 at the joining portion. Therefore, in the present embodiment, compared with the conventional case, even when the joining position between the lower end portion of the front pilot liner upper 20 and the upper end portion of the front pilot liner lower 22 is changed to the lower side, the desired joining strength ( (Bonding strength) can be secured.

Further, in the present embodiment, the plurality of joint points 30 are arranged so as to open upward in the vehicle vertical direction. As a result, in the present embodiment, the U-shaped arrangement of the plurality of joint points 30 is directed upward (the U-shaped opening is directed upward), so that the distance (deformation amount) before and after deformation in a side view from the vehicle width direction. Is constant, and the peeling stress input to the plurality of bonding points 30 can be made uniform. That is, since the array of the U-shaped spot welding joint points 30 is an array along the deformation of the inverted conical shape, the distance between the before and after the deformation (the amount of deformation) when viewed from the side in the vehicle width direction. ) Becomes substantially constant, and the peeling stress input to each joining point 30 can be made uniform (see the schematic diagram shown in FIG. 12). As a result, in the present embodiment, the peeling can be further suppressed by the spot striking point arrangement along the deformation mode of the hat cross section.

Further, in the present embodiment, the main body portion 28 has a pair of constricted portions 38, 38 that are constricted in the vehicle front-rear direction at the joint portion between the front pillar upper 20 and the front pillar lower 22. .. The main body portion 28 is a portion having a relatively large amount of deformation in the hat cross section when the offset load F is input. In the present embodiment, by forming the constricted portions 38, 38 on both sides of the main body portion 28, the length in the vehicle front-rear direction can be shortened and the amount of reverse conical deformation can be reduced. For example, the dimension A in the vehicle front-rear direction of the main body 28 in the first comparative example shown in FIG. 8A is larger than the dimension B in the vehicle front-rear direction of the main body 28 in the present embodiment shown in FIG. 8B (A >B).

Furthermore, in the present embodiment, the constricted portion 38 has a bead portion 40 (see FIG. 3) provided on the leg portion 26 located at the rear of the vehicle. The bead portion 40 extends along the longitudinal direction of the leg portion 26 and has a fan-shaped (arc-shaped) cross section. As a result, in the present embodiment, the bead portion 40 is arranged close to the plurality of joint points 30 arranged in a substantially U-shape, so that the front liner lower 22 when the offset load is input. Deformation can be suppressed. Further, since the bead portion 40 has a fan-shaped (arc-shaped) cross-sectional shape, for example, the spring constant is increased as compared with the case where the bead portion 40 has a linear cross-sectional shape, and the side sill 14 extends from the vehicle front end toward the vehicle rear. There is an advantage that the bead portion 40 is less likely to be compressed by the collision load input toward the bead portion 40.

Furthermore, in the present embodiment, a pair of projecting portions 34, 34 projecting upward in the vehicle are provided at the upper end of the main body portion 28 of the front pillar lower 22. The joint points 30 located at the upper ends of the substantially U-shapes are arranged on the pair of protrusions 34, 34, respectively.

Generally, as the plurality of joint points 30 are located at a horizontal position passing through the wheel center (WC) and located at a position higher (farther) than the load input point at the vehicle front end of the side sill 14, the joint portions are less likely to peel off. There is. For example, the vertical separation distance from the wheel center to the joining portion of the first comparative example shown in FIG. 8A is higher than the vertical separation distance D from the wheel center to the joining portion of the present embodiment shown in FIG. 9B. It is in the position.

Therefore, in the present embodiment, a pair of projecting portions 34, 34 projecting upward are provided at two positions in the vehicle front-rear direction at the upper end of the main body portion 28 of the front pilot lower 22. Of the four joint points 30 arranged in a substantially U shape with respect to 34, the joint point 30 located at the tip of the substantially U shape is arranged. As a result, in the present embodiment, the two joint points 30 arranged on the pair of protrusions 34, 34 are located at positions higher (farther) than the load input points as compared with the other two joint points 30 (FIG. 7). (See ΔH) shown in FIG. 4), and it becomes more difficult to peel off the bonded portion.

Furthermore, in the present embodiment, the plurality of joint points 30 arranged in a U shape are located below the upper end of the wheel 36 in a side view from the vehicle width direction. Thus, in the present embodiment, by lowering the lower end position of the front liner upper 20 to the lower side of the vehicle, for example, the arrangement position of the hood opener 58 (see FIG. 1) can be changed to the lower position as compared with the conventional one. it can. As a result, in the present embodiment, when operating the hood opener 58, it is possible to preferably avoid interference (contact) of the operator's arm with an instrument panel (not shown) and improve operability. ..

Furthermore, in the present embodiment, the lower end portion of the front pillar upper 20 is sandwiched between the front pillar lower 22 and the side sill reinforcement 42. As a result, in the present embodiment, at the joining portion having the plurality of joining points 30 arranged in a substantially U-shape, the three sheets of the front pillar upper 20, the front pillar lower 22 and the side sill reinforcement 42 are formed. The peel strength can be improved by spot welding the members to firmly bond them.

Furthermore, in the present embodiment, the side sill reinforcement 42 is joined so as to close the opening of the side sill inner 44 having a hat-shaped cross section, and is also joined so as to close the opening of the front pine liner 16 having a hat-shaped cross section. Has been done. Further, the side sill reinforcement 42 has an extending portion 50 that bends and extends toward the inside in the vehicle width direction as it extends downward from the upper end in the vehicle vertical direction. The extension end 52, which is the upper end of the extension portion 50, extends to the plurality of joint points 30 arranged in a substantially U shape.

In the present embodiment, the closed cross section on the side sill inner 44 side and the closed cross section on the front pillar 16 side can be arranged adjacent to each other in the vehicle vertical direction. As a result, in the present embodiment, the rigidity and strength of the portion where the front pillar 12 and the side sill 14 are orthogonal to each other can be improved. Further, in the present embodiment, an extension portion 50 that bends inward in the vehicle width direction is provided on the upper end side of the side sill reinforcement 42, and the extension end 52 of this extension portion 50 is arranged in a substantially U shape. The plurality of joint points 30 are extended. As a result, in the present embodiment, the easily deformable extending portion 50 follows the offset collision test (ODB test) mode in which the front linear lower 22 has an inverted conical shape that bulges inward and downward. Can be deformed.

Furthermore, in the present embodiment, the side sill reinforcement 42 is located at the first joint point 54a located on the front side of the vehicle with respect to the jack-up plate 48 attached to the side sill 14 and on the rear side of the vehicle with respect to the jack-up plate 48. It is joined to the side sill inner 44 at three points including the second joining point 54b and the third joining point 54c located above the jack-up plate 48 in the vehicle.

The jack-up plate 48 itself has high rigidity and strength, and the weight of the vehicle body acts on the jack-up plate 48 at the time of jacking up, so that the periphery thereof may be easily deformed. On the other hand, in the present embodiment, the side sill reinforcement 42 is joined to the side sill inner 44 at the first to third joining points 54a to 54c, whereby the rigidity and strength around the jack-up plate 48 can be improved. .

Furthermore, in the present embodiment, in the plurality of joint points 30 arranged in a substantially U shape, the distance between the centers of the plurality of adjacent joint points 30 is 7 mm to 18 mm (see FIG. 13 ). In the present embodiment, short pitch welding can be achieved by setting the spacing between the plurality of joint points 30 in spot welding to 7 mm to 18 mm. More preferably, by setting the spacing between the joining points 30 to be 15 mm, the joining strength can be improved and the welding quality can be improved. If the distance between the joining points 30 is made closer than 7 mm (the distance between the joining points is less than 7 mm in FIG. 13), there is a risk of discharge to the adjacent joining points 30 and a decrease in the joining strength of the joining portion.

10 Body Side 12 Front Pillar 14 Side Sill 16 Front Pillar 18 Front Pillar Outer 20 Front Pillar Upper (Upper)
22 Front pillar lower (Vehicle cross-section hat member, lower part)
24 Flange portion 26 Leg portion 28 Main body portion 30 Joining point (fixing point)
34 Protrusions 36 Wheels 38 Constriction-shaped parts 40 Beads 42 Side sill reinforcements 44 Side sill inners 46 Side sill outers 48 Jack up plates 50 Extending parts 52 Extending ends 54a First joining points 54b Second joining points 54c Third Junction

Claims (10)

An inner side in the vehicle width direction having a pair of flange portions whose cross section extends in the vehicle front-rear direction, a pair of leg portions whose cross section extends substantially in the vehicle width direction, and a main body portion located between the pair of leg portions. Alternatively, a cross-section hat member for a vehicle that opens to the outside in the vehicle width direction,
The vehicle cross-section hat member includes an upper portion located on the upper side in the vehicle vertical direction and a lower portion located on the lower side in the vehicle vertical direction,
At least the main body portion has a plurality of fixing points at which the upper portion and the lower portion are joined,
The cross-section hat member for a vehicle, wherein the plurality of fixing points are arranged in a substantially U shape when viewed from the side in the vehicle width direction. The vehicle cross-section hat member according to claim 1,
The cross-section hat member for a vehicle, wherein the plurality of fixing points are arranged so as to open upward in the vehicle vertical direction. The cross-sectional hat member for a vehicle according to claim 1 or 2,
The vehicle body cross-section hat member according to claim 1, wherein the main body portion has a constricted portion that is constricted in a vehicle front-rear direction at a position where the upper portion and the lower portion are coupled to each other. The vehicle cross-section hat member according to claim 3,
The constricted portion has a bead portion provided on at least one of the pair of leg portions in the vehicle front-rear direction,
The cross-section hat member for a vehicle, wherein the bead portion extends along the longitudinal direction of the leg portion and has a fan-shaped cross section. The vehicle cross-section hat member according to any one of claims 1 to 4,
At the upper end of the main body portion in the lower portion, a pair of protruding portions that protrude toward the vehicle upward direction are provided,
The cross-section hat member for a vehicle, wherein the fixing points located at the upper ends of the substantially U-shapes are arranged on the pair of protrusions, respectively. The vehicle cross-section hat member according to any one of claims 1 to 5,
The vehicle cross-section hat member is a front pillar,
The cross-section hat member for a vehicle, wherein the plurality of fixing points are located below an upper end of the wheel when viewed from the side in the vehicle width direction. The vehicle cross-section hat member according to claim 6,
The front pillar has a front pillar upper that is the upper portion and a front pillar lower that is the lower portion,
The side sill has a side sill inner on the inner side in the vehicle width direction and a side sill outer on the outer side in the vehicle width direction,
A side sill reinforcement is provided between the side sill inner and the side sill outer at the vehicle front end of the side sill,
A part of the side sill reinforcement is disposed between the front pill liner upper and the front pill liner lower,
A cross-section hat member for a vehicle, wherein a lower end portion of the front pillar upper is sandwiched between the front pillar lower and the side sill reinforcement. The vehicle cross-section hat member according to claim 7,
The side sill reinforcement is coupled so as to close the hat-shaped cross-section opening of the side sill inner, and is also coupled so as to close the hat-shaped cross-section opening of the front pine liner,
The side sill reinforcement has an extension portion that bends and extends inward in the vehicle width direction from the upper end in the vehicle vertical direction toward the lower side,
An extension end that is an upper end of the extension portion extends to the plurality of fixing points arranged in the substantially U shape, and the vehicle cross-section hat member is characterized in that. The vehicle cross-section hat member according to claim 8,
The side sill reinforcement includes a first joint point located on the front side of the vehicle with respect to the jack-up plate attached to the side sill, a second joint point located on the rear side of the vehicle with respect to the jack-up plate, and the jack-up. A vehicle cross-section hat member, characterized in that it is joined to the side sill inner at three points, which are third joining points located above the plate. The vehicle cross-section hat member according to claim 1,
The vehicle cross-section hat member, wherein the center-to-center spacing between the plurality of adhering fixing points is 7 mm to 18 mm.

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