WO2011118107A1 - 車体側部構造 - Google Patents
車体側部構造 Download PDFInfo
- Publication number
- WO2011118107A1 WO2011118107A1 PCT/JP2010/073391 JP2010073391W WO2011118107A1 WO 2011118107 A1 WO2011118107 A1 WO 2011118107A1 JP 2010073391 W JP2010073391 W JP 2010073391W WO 2011118107 A1 WO2011118107 A1 WO 2011118107A1
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- WO
- WIPO (PCT)
- Prior art keywords
- vehicle body
- front pillar
- reinforcing member
- side sill
- joined
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/02—Side panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/02—Side panels
- B62D25/025—Side sills thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2081—Jack receiving devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/007—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of special steel or specially treated steel, e.g. stainless steel or locally surface hardened steel
Definitions
- the present invention relates to a vehicle body side portion structure including a side panel outer that covers a vehicle body side portion from the outside.
- the vehicle body side structure includes a side panel outer and a side panel inner in which at least one door opening is formed.
- the side panel outer and the side panel inner are joined to form a closed cross section.
- the side panel outer is divided in the vehicle front-rear direction at a rear portion of the door opening.
- the plate thickness t 0.6 to 0.75 mm).
- SPC is a cold rolled steel sheet.
- SPC590 is a cold rolled steel plate (high strength steel plate) having a tensile strength of 590 MPa or more.
- SPC 270 is a cold-rolled steel plate (ordinary steel plate) having a tensile strength of 270 MPa or more.
- a steel plate having a tensile strength of 340 MPa or more is a high-tensile steel plate, and steel plates other than the high-tensile steel plate are ordinary steel plates.
- the front portion of the side panel outer is made of a high-tensile steel plate, thereby eliminating the reinforcement (reinforcing material) and reducing the weight of the vehicle body side structure (for example, Patent Document 1). reference.).
- the vehicle body side part structure disclosed in Patent Document 1 uses a high-tensile steel plate at the front part of the side panel outer.
- High-tensile steel sheets have properties that are harder and more brittle as the tensile strength increases. Therefore, in the vehicle body side part structure of Patent Document 1, in press molding, for example, the corner radius of the parting part with the door upper edge below the side wall of the roof rail, the corner part of the side wall of the upper roof molding groove, etc. There is a risk that cracks may occur in the small arc portion.
- the side sill portion protrudes outward so that the outer surface of the side panel outer and the fender panel are continuous. Accordingly, a step is generated on the outer surface of the bent portion between the front pillar lower and the side sill.
- the front pillar lower is bent rearward because it deforms above the upper member located in front of the front pillar lower when the front wheel is pushed up when the vehicle is running. For this reason, stress concentrates on the step portion on the outer side surface of the bent portion, and the front pillar lower bends inward or outward.
- Patent Document 2 discloses a vehicle body side structure including a side sill joined to form a closed cross-section with a side sill outer and a side sill inner.
- the jack-up point of the side sill is provided with a reinforcing member (jack up stiffener) that prevents the side sill inner from being deformed.
- a reinforcing member jack up stiffener
- the reinforcing member is provided in the side sill. Therefore, even if the deformation of the side sill inner can be prevented, the reinforcing member does not contribute to the strength and rigidity of the bent portion connecting the side sill and the front pillar lower.
- JP 2001-334957 A Japanese Patent No. 4328728
- this invention can carry out the press molding of an acute ridgeline to the part required on external appearance, and can ensure the high intensity
- an object of the present invention is to provide a vehicle body side structure in which the deformation of the front pillar lower portion and the side sill portion is suppressed and the rigidity of the vehicle body is improved.
- an object of the present invention is to provide a vehicle body side part structure that can contribute to an improvement in strength and rigidity of a bent portion and can suppress the bending portion from being repeatedly deformed.
- the invention according to claim 1 is a vehicle body side portion structure including a side panel outer that covers a vehicle body side portion from the outside, wherein the side panel outer includes a front pillar lower portion formed of a high-strength steel plate and a normal steel plate.
- a front pillar upper portion formed and a reinforcing member disposed along the front pillar upper portion, and an upper end of the front pillar lower portion is coupled to a lower end of the front pillar upper portion,
- the front end is a vehicle body side structure that is coupled to the inner surface of the upper end of the front pillar lower portion.
- the said reinforcement member has the extension part extended below substantially perpendicularly from the front-end lower part, and the said extension part is joined to the upper end of the said front pillar lower part.
- the vehicle body side part structure further includes an upper member having a closed cross-sectional shape extending in the vehicle front-rear direction and joined to the front part of the front pillar lower part and the front end of the reinforcing member.
- the upper member has a shape in which the width in the vertical direction gradually increases toward the rear, and the upper member joining portion that joins the front portion of the front pillar lower portion and the front end of the reinforcing member is the outermost portion of the upper member.
- An extension line formed at a large end and extending in the front-rear direction of the vehicle body along the joint portion between the front pillar lower portion and the reinforcing member passes through substantially the center of the upper member joint portion.
- the front pillar lower portion formed of a high-tensile steel plate is formed integrally with a side sill portion extending from the lower portion of the front pillar lower portion toward the rear of the vehicle body via a bent portion.
- each of the front pillar lower portion, the bent portion, and the side sill portion has a side wall, and the side wall is formed of a flat surface without unevenness.
- the upper member has a reinforcing structure toward the front pillar lower portion.
- the reinforcing member is joined to a side wall and a front wall of the front pillar lower portion.
- the invention according to claim 8 is a vehicle body side part structure provided with a side panel outer covering the vehicle body side part from the outside, wherein the roof rail part and the rear panel part of the side panel outer are upper frame parts of ordinary steel plates,
- the front pillar lower portion and the side sill portion of the side panel outer are used as the lower frame portion of the high-tensile steel plate, and both ends of each frame portion are joined to form a side panel outer frame portion, the front pillar lower portion and the side sill portion,
- the bent portion located between the front pillar lower portion and the side sill portion is formed to have a flat outer surface, and the side sill portion is covered with a separate side sill garnish, and the outer surface of the side sill garnish and the outer surface of the fender panel
- It is a vehicle body side structure in which and are continuous.
- the side panel outer frame part includes a center pillar part formed by hot stamping, and the door opening is formed before and after the center pillar part.
- the center pillar portion has an upper end and a lower end, the upper end is attached to the inside of the side panel outer frame portion, and the lower end is attached to the outside of the side panel outer frame portion.
- the roof rail portion of the side panel outer frame portion includes a reinforcing member that is provided in the roof rail portion and reinforces the roof rail portion, and the upper end of the center pillar portion is It is attached to the outer surface of the reinforcing member, and the lower end of the center pillar portion is attached to the side surface of the side sill portion.
- the said 1st blank material of the 1st thickness normal steel plate is used for the said side panel outer frame part in the said upper frame part, This 1st blank material is press-molded, A second blank of a high-tensile steel plate having a second thickness is used for the front pillar lower portion of the lower frame portion, and a third blank of a high-tensile steel plate having a third thickness is used for the side sill portion of the lower frame portion.
- a blank material is used, these 2nd and 3rd blank materials are joined, a composite blank material is formed, and this composite blank material is press-molded.
- a vehicle body side structure in which an inner side member provided on a vehicle body side portion is covered with a side panel outer from the outside, and a closed cross section is formed by the inner side member and the side panel outer.
- the panel outer includes a side sill portion extending in the longitudinal direction of the vehicle body, a front pillar lower portion formed integrally with the side sill portion via a bent portion, and extending in the height direction of the vehicle body, the front pillar lower portion, and the side sill.
- the reinforcing member is formed in one corner portion having a substantially rectangular shape and joined to the inner flange, another corner portion facing the one corner portion, and the other corner portion.
- the reinforcing member causes the outer joint portion to be offset inward in the vehicle width from the inner joint portion, and protrudes toward the side panel outer side, from the inner joint portion.
- the outer joint portion has a ridge line formed at the center in the radial direction, and a reinforcing bead is formed across the ridge line.
- the reinforcing member is a jack-up base for hitting a jack when lifting the vehicle body.
- the reinforcing member has a cross-section changing portion that reinforces the bent portion.
- the said inner joining part is only in the center part of the circular arc of the said bending part. It is formed.
- the vehicle body side part structure is provided with a side panel outer covering the side part of the vehicle body from the outside.
- the side panel outer includes a front pillar lower portion formed of a high-strength steel plate, a front pillar upper portion formed of a normal steel plate, and a reinforcing member disposed along the front pillar upper portion. That is, the front pillar upper portion can be easily formed by using a normal steel plate for the front pillar upper portion that requires press forming of an acute ridge line in relation to the lath of the door or the front in terms of appearance.
- the upper end of the front pillar lower part is coupled to the back surface of the lower end of the front pillar upper part, and the front end of the reinforcing member is coupled to the rear surface of the upper end of the front pillar lower part. It can be extended to a position where there is no upper influence, and can be reinforced with a high-strength member to the rear end (desired portion) of the upper member to which the front collision load is input. Thereby, high intensity
- the reinforcing member is formed with an extending portion extending substantially perpendicularly to the lower portion of the front end, and the extending portion is joined to the upper end of the front pillar lower portion. Can be connected even at low heights. Thereby, the freedom degree of design of a side panel outer can be expanded.
- an upper member having a closed cross section extending in the vehicle longitudinal direction is joined to the front portion of the front pillar lower portion and the front end of the reinforcing member.
- the upper member has a diverging shape toward the rear, and an upper member joining portion is formed at the end of the diverging shape to join the front portion of the front pillar lower portion and the front end of the reinforcing member.
- the extension line that extends to the front and rear of the vehicle body along the joint part passes through the approximate center of the upper member joint part, so that the front impact load is almost evenly distributed to the reinforcing member of the front pillar upper part and the high-strength front pillar lower part. Can be dispersed.
- the front pillar lower portion formed of the high-tensile steel plate is formed integrally with the side sill portion extending from the lower portion of the front pillar lower portion to the rear of the vehicle body via the bent portion, the front pillar lower portion Thus, the load can be continuously transmitted to the side sill portion through the bent portion.
- the outer surfaces of the front pillar lower portion, the bent portion, and the side sill portion are configured as flat surfaces having no irregularities, bending at the bent portion can be suppressed.
- the upper member since the upper member has a reinforcing structure toward the front pillar lower portion, it is possible to transmit a large amount of front impact load to the front pillar lower portion. Thereby, weight reduction of a front pillar upper part can be achieved.
- the roof rail portion and the rear panel portion of the side panel outer are the upper frame portion of the normal steel plate
- the front pillar lower portion and the side sill portion of the side panel outer are the lower frame portion of the high-tensile steel plate
- the side panel outer frame part is formed by joining both ends of the part.
- the bent part of the front pillar lower part and the side sill part flattens the outer surface from the front pillar lower part to the side sill part, the side sill part is covered with a separate side sill garnish, and the outer surface of the side sill garnish and the outer surface of the fender panel Continue.
- the roof rail portion uses a plain steel plate with good press formability, cracks during press forming of the roof rail portion can be suppressed, and the front pillar lower portion and the side sill portion are integrally formed of a high-strength steel plate.
- the vehicle body rigidity can be improved.
- the front pillar lower portion and the side sill portion have their outer surfaces flattened from the front pillar lower portion to the side sill portion, deformation of the front pillar lower portion can be suppressed, and vehicle body rigidity can be improved.
- the front pillar lower part and side sill part where stress is concentrated due to the front wheel being pushed up during running, etc., have been smoothed on the outer side from the front pillar lower part to the side sill part.
- the deformation of the front pillar lower portion and the side sill portion can be suppressed to contribute to the improvement of the vehicle body rigidity.
- a center pillar portion formed by hot stamping is attached to the side panel outer frame portion, and a door opening is formed in the front and rear. Since the center pillar portion formed by hot stamping has high rigidity and strength, the vehicle body strength can be further improved.
- the center pillar portion formed by hot stamping is attached to the upper part from the inside of the side panel outer frame part, and the lower part is attached from the outside of the side panel outer frame part. That is, the lower part of the center pillar part can extend the ridge line in the side sill part without interruption from the rear end to the front end, so that it is possible to improve the collision performance of the front collision, rear collision and side collision. Since the upper part of the center pillar part can be coupled to the roof arch, for example, the load acting on the center pillar part can be directly transmitted from the center pillar part to the roof arch. Thereby, the improvement of a side collision performance can be aimed at. Moreover, it becomes possible to eliminate members, such as a reinforcement bracket.
- the reinforcement member which reinforces a roof rail part is provided in the roof rail part of a side panel outer frame part, the upper part of a center pillar part is faced to the outer surface of a reinforcement member, and the lower part of a center pillar part is a side sill part. Therefore, it is possible to make it difficult for rainwater or the like to enter from the outside both at the upper part of the center pillar part and at the lower part of the center pillar part.
- the 1st blank material of the 1st thickness normal steel plate is used for the upper frame part of a side panel outer frame part, This 1st blank material is press-molded, and a lower frame part A second blank material of a high-strength steel plate having a second thickness is used for the front pillar lower portion of the steel plate, and a third blank material of a high-strength steel plate having a third thickness is used for the side sill portion of the lower frame portion.
- These 2nd and 3rd blank materials are joined, a composite blank material is formed, and this composite blank material is press-molded. Since the lower frame part formed with the 2nd and 3rd blank materials can be concealed with a door or a side sill garnish, the joining line of blank materials is hidden in a door or a side sill garnish, and is not conspicuous.
- a closed cross section is formed with an inner side member and a side panel outer.
- a side sill portion that extends in the longitudinal direction of the vehicle body on the side panel outer, a front pillar lower portion that is integrally formed with the side sill portion via a bent portion and extends in the height direction of the vehicle body, and these
- An inner flange and an outer flange that are continuously formed on the front pillar lower portion, the side sill portion, and the bent portion, and are joined to the inner side member; and a substantially rectangular reinforcing member that is disposed in the bent portion and in the closed cross section; Is provided.
- the reinforcing member is formed in one corner portion having a substantially rectangular shape, and is joined to an inner joint portion joined to the inner flange, another corner portion facing one corner portion, and two sides sandwiching the other corner portion.
- An outer joint portion formed to be joined to the outer flange, and the outer joint portion joined to the outer flange around the inner joint portion joined to the inner flange is formed in a substantially radial manner.
- a reinforcing member made of a plate material can be passed through the entire cross section. Thereby, it is possible to contribute to the strength and rigidity of the bent portion, and it is possible to suppress the breathing deformation that the cross section of the bent portion undergoes repeated deformation. As a result, the vehicle body rigidity can be improved, and the steering stability of the vehicle can be improved.
- the reinforcing member is placed along the side panel outer and the inner side member in the entire cross section of the bent portion. Can be made.
- the reinforcement member is projected toward the outer side of the side panel, and a ridge line is formed from the inner joint portion toward the substantially radial center of the outer joint portion, and the reinforcement bead is formed across the ridge line. Can be suppressed.
- the reinforcing member is a jack-up base to which the jack is applied when the vehicle body is lifted, the entire bent portion with the cross-sectional reinforcement can be used as a jack-up point for lifting the vehicle body. As a result, sufficient rigidity and strength can be ensured at the jack-up point.
- the reinforcing member since the reinforcing member has a cross-section changing portion that reinforces the bent portion, it is possible to ensure strength and rigidity of the reinforcing member.
- the outer joint portion is formed over the vertical portion, the bent portion, and the horizontal portion of the bent portion, and the inner joint portion is formed only in the central portion of the arc of the bent portion. That is, the outside of the bent portion can be reinforced with emphasis, and efficient reinforcement of the bent portion can be realized.
- FIG. 5 is a cross-sectional view of the upper member shown in FIG. 4. It is the figure which showed a part of side panel outer shown by FIG. It is the figure which showed the joining state of the stiffener shown by FIG.
- FIG. 12 is a cross-sectional view of the upper member shown in FIG. 11.
- FIG. 10 is an exploded perspective view showing a vehicle body side structure according to a third embodiment.
- FIG. 14 is a perspective view of the side panel outer shown in FIG. 13.
- FIG. 15 is a perspective view of the center pillar shown in FIG. 14. It is sectional drawing of the vehicle body side part structure shown by FIG. It is the figure which showed the junction part of the center pillar shown by FIG. It is the figure which showed the assembly
- FIG. 15 is a diagram illustrating an overlapping state that is a joint portion of the side panel outer illustrated in FIG. 14. It is the figure which showed the load transmission path
- FIG. 10 is an exploded perspective view showing a vehicle body side structure according to a fourth embodiment. It is a perspective view of the front pillar lower part and side sill part which were shown by FIG. It is the perspective view which showed the joining state of the center pillar part and side sill part which were shown by FIG.
- FIG. 24 is a cross-sectional view taken along line 24-24 of FIG. It is a perspective view of the roof rail part shown by FIG.
- FIG. 26 is a cross-sectional view taken along line 26-26 in FIG. 25.
- FIG. 10 is a side view of a vehicle body side part structure according to a fifth embodiment.
- FIG. 10 is a perspective view showing a side panel outer employed in a vehicle body side part structure according to a fifth embodiment.
- FIG. 35 is an exploded perspective view of the side panel outer shown in FIG. 34.
- FIG. 10 is a perspective view of a reinforcing member employed in a vehicle body side structure according to a fifth embodiment. It is the perspective view which showed the welding location of the reinforcement member shown by FIG.
- FIG. 34 is a cross-sectional view taken along line 38-38 of FIG.
- FIG. 34 is a cross-sectional view taken along line 39-39 in FIG.
- FIG. 40 is a cross-sectional view taken along line 40-40 in FIG. 33.
- FIG. 44 is a cross-sectional view taken along line 41-41 of FIG. It is the figure which showed the deformation
- FIG. 10 is a diagram for examining a vehicle body side portion structure according to a fifth embodiment.
- the vehicle body side structure 10 includes a side panel 11 that forms the side of the vehicle body.
- the side panel 11 includes a side panel outer 14 and a side panel inner 19.
- the side panel outer 14 and the side panel inner 19 are joined to form a closed cross section.
- the upper member 20 is provided at the front end of the side panel outer 14.
- the side panel inner 19 includes a side sill inner 21, a front pillar inner 27 (including a front pillar lower inner 22), a center pillar inner 25, and a rear pillar inner 26.
- the side panel outer 14 includes a side sill portion 33 that covers the side sill inner 21 from the outside of the vehicle body, a front pillar lower portion 31 that covers the front pillar lower inner 22 from the outside of the vehicle body, and a center pillar that covers the center pillar inner 25 from the outside of the vehicle body.
- the rear pillar portion 36 and the rear fender panel 39 constitute a rear panel portion 34.
- the stiffener 38 is a reinforcing member.
- upper and lower front door hinges 175 and 176 are attached to the side wall 53 of the front pillar lower portion 31.
- the side sill portion 33 extends linearly in the longitudinal direction of the vehicle body.
- the front pillar lower portion 31 is raised substantially vertically from the front end of the side sill portion 33.
- the front pillar lower portion 31 and the side sill portion 33 are integrally formed via the bent portion 32. That is, the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 are integrally formed of the same material and constitute an L-shaped lower frame portion 41. Further, the side walls 53, 63, 73 of the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 are flat surfaces without unevenness.
- the center pillar part 35 extends substantially vertically from the middle of the side sill part 33 in an I-shape.
- the roof rail portion 37 and the rear panel portion 34 are integrally formed of the same material and constitute the upper frame portion 42.
- the stiffener 38 is formed along the roof rail portion 37. That is, the reinforcing member 38 is disposed along the front pillar upper portion (front half portion) 37a.
- the side panel outer 14 is formed by joining the center pillar portion 35 to the lower frame portion 41 and the upper frame portion 42 formed separately.
- the lower frame portion 41 and the upper frame portion 42 form a side panel outer frame portion 96.
- the side sill 16 includes a side sill inner 21 and a side sill portion 33 of the side panel outer 14. A closed cross section is formed by combining the side sill inner 21 and the side sill portion 33.
- the side sill 16 is provided with a side sill garnish 15 (FIG. 13) that covers the side sill portion 33.
- the front pillar 18 includes a front pillar lower 17 raised from the side sill 16 and a front pillar inclined portion 18a extending from the upper portion of the front pillar lower 17 toward the rear of the vehicle body so as to incline upward.
- the front pillar inclined portion 18 a includes an inclined portion 28 of the front pillar inner 27 and a front pillar upper portion (front half portion) 37 a of the roof rail portion 37.
- the front pillar lower 17 includes a front pillar lower portion 31 of the side panel outer 14 and a front pillar lower inner 22.
- the front pillar lower inner 22 and the front pillar lower portion 31 are combined to form a closed cross section.
- the roof rail 45 includes a roof rail inner 29, a roof rail portion 37, and a stiffener 38.
- the stiffener 38 is provided inside the roof rail portion.
- the roof rail inner 29 and the roof rail portion 37 form a closed cross section, and the stiffener 38 and the roof rail inner 29 form a closed cross section.
- the upper part of the center pillar inner 25 is joined to the inside of the roof rail inner 29.
- a triangular window 174 is formed in the roof rail portion 37.
- a steering hanger mounting portion 177 for attaching a steering hanger (not shown) is formed below the triangular window 174.
- the reinforcing member (stiffener) 38 is formed with an extending portion 171 extending substantially vertically downward at the lower portion of the front end 38a.
- the extension part 171 is joined to the inner side surface of the upper end 31 a of the front pillar lower part 31.
- the rear end of the stiffener 38 extends along the roof rail portion 37 and is connected to the upper end 35 a of the center pillar portion 35 and the upper end of the rear pillar portion 36.
- the center pillar 47 includes a center pillar inner 25 and a center pillar portion 35.
- the upper end 35 a of the center pillar portion 35 is joined to the stiffener 38 in the roof rail portion 37, and the lower end 35 b is joined to the side sill portion 33.
- the center pillar portion 35, the roof rail portion 37, the front pillar lower portion 31, the side sill portion 33, and the rear pillar portion 36 form front and rear door openings (not shown).
- the upper member 20 includes an upper frame 172 located on the outer side and a cowl side panel 173 provided on the lower inner side of the upper frame 172, and is shown in FIGS.
- the vehicle body extends in the longitudinal direction.
- the upper frame 172 and the cowl side panel 173 form a closed cross section.
- the upper frame 172 has a horizontal side 172a and a vertical side 172b.
- the cowl side panel 173 has a horizontal side 173a and a vertical side 172b.
- the upper member 20 is joined to the front portion 54 of the front pillar lower portion 31 and the front end 38 a of the reinforcing member 38.
- the upper member 20 has a divergent shape toward the rear, and an upper member joint in which the front portion 54 of the front pillar lower portion 31 and the front end 38 a of the stiffener 38 are joined to the end portion of the divergent shape.
- a portion 178 is formed.
- An extension line L1 extending in the longitudinal direction of the vehicle body along the joint portion 181 between the front pillar lower portion 31 and the stiffener 38 passes through substantially the center of the upper member joint portion 178.
- An L-shaped lower frame portion 41 in which the side sill portion 33 and the front pillar lower portion 31 are integrally formed is a high-strength steel plate such as Japanese Industrial Standard (JIS) -SPC 980 (hereinafter simply referred to as SPC 980).
- JIS Japanese Industrial Standard
- SPC 980 Japanese Industrial Standard
- a high-strength lower frame portion (lower structure) 41 in which the front pillar lower portion 31 and the side sill portion 33 are integrated is provided in the side panel outer 14 of the vehicle body side structure 10, as shown in FIG. 2, a high-strength lower frame portion (lower structure) 41 in which the front pillar lower portion 31 and the side sill portion 33 are integrated is provided.
- the front pillar lower portion 31 formed of a high-tensile steel plate is integrally formed with a side sill portion 33 that extends from the lower portion of the front pillar lower portion 31 toward the rear of the vehicle body via the bent portion 32.
- the front pillar lower portion 31 of the front pillar lower 17 shown in FIG. 6 is formed of a cold-rolled steel plate of a high strength steel plate such as SPC980.
- the front pillar inner 22 is also formed of a cold-rolled steel plate made of a high-tensile steel plate such as SPC980.
- SPC980 refers to a cold rolled steel sheet having a tensile strength exceeding 980 MPa.
- SPC590 refers to a cold rolled steel sheet having a tensile strength of 590 MPa or higher
- SPC270 refers to a cold rolled steel sheet having a tensile strength of 270 MPa or higher.
- a cold-rolled steel plate having a tensile strength of 590 MPa or more is referred to as a high-tensile steel plate
- a cold-rolled steel plate having a tensile strength of 270 MPa or more is referred to as a normal steel plate relative to the high-tensile steel plate.
- High tensile steel sheets have high tensile strength as described above. That is, the strength of the product can be increased by using a high-tensile steel plate. By using this for the side panel outer, it is possible to reduce the weight of the product and reduce the cost by omitting the conventionally used stiffener or reducing the thickness of the material. When the reinforcement (stiffener) is provided inside the side panel outer, the weight of the vehicle body is increased.
- high-strength steel sheets are inferior to ordinary steel sheets in terms of material extensibility. For this reason, the appearance part of the hoof rail part of the side panel outer as seen by a person has a part where bending is set small, such as a boundary part with a design and a door, and a high-strength steel plate cannot be used. Mainly, high-strength steel plates were used for reinforcement inside the side panel outer.
- the center pillar portion 35 is hot stamped with a cold rolled steel plate (hot stamp material) having a tensile strength of 590 to 1180 MPa.
- Hot stamping is a method in which a steel plate can be easily deformed by heating to a high temperature, and the steel plate can be rapidly cooled at the same time as the steel plate is formed by a mold to obtain higher strength than before forming. That is, it is possible to increase the tensile strength to about 1500 MPa by rapidly cooling the steel plate heated to a high temperature.
- the stiffener 38 is formed of a cold-rolled steel sheet having a tensile strength exceeding 980 MPa.
- a galvanized steel plate (JAC980YL) of JFS A 3011 (generally referred to as, for example, JAC980YL.
- JAC980YL is a high-tensile steel galvanized steel sheet and has a tensile strength of 980 MPa or more. That is, the stiffener 38 has an extending portion 171 that extends downward from the front end 38a.
- the extension portion 171 is joined to the upper end 31a of the high-strength front pillar lower portion 31 formed of a cold-rolled steel plate of high-tensile steel such as SPC980.
- the roof rail portion 37 and the rear panel portion 34 are integrally formed of a cold-rolled steel plate having a tensile strength of 270 MPa that is easy to press-mold.
- a galvanized steel sheet (JAC270E) is used.
- the JAC270E material is a normal galvanized steel plate, has a tensile strength of 270 MPa or more, and is a material with good workability with a low yield point. That is, the front pillar upper portion 37a is formed of a normal steel plate.
- the roof rail inner 29 shown in FIG. 5 is formed of a cold-rolled steel plate of a high-strength steel plate such as SPC980.
- the roof rail inner 29 is formed of a cold-rolled steel plate having a tensile strength exceeding 980 MPa, and a closed cross section is formed with the stiffener 38.
- the upper frame 172 and the cowl side panel 173 of the upper member 2 are formed of a cold-rolled steel plate such as a high-strength steel plate such as SPC980.
- the roof rail portion 37 and the rear panel portion 34 integrally formed of cold-rolled steel sheets having a tensile strength exceeding 270 MPa (hereinafter simply referred to as 270 materials), and a tensile strength exceeding 980 MPa.
- 270 materials a tensile strength exceeding 270 MPa
- 980 material a cold-rolled steel plate
- the 980 material is attached to the back side of the 270 material by the arrow c1. So that they overlap each other.
- 980 materials can be overlapped to a desired range regardless of the division position of 270 materials.
- the stiffener 38 has a high-strength steel member having a high-strength steel plate formed of a cold-rolled steel plate such as SPC980. Since it is joined to the upper end 31a of the front pillar lower portion 31, a high-strength and high-rigidity vehicle body side portion structure can be realized from the upper frame portion 42 to the lower frame portion 41, and the upper frame portion as indicated by an arrow f1. 42 and the lower frame portion 41 can be loaded with each other.
- the front collision load acting from the front of the vehicle body is indicated by the arrow g1 via the horizontal side 172a and the vertical side 172b of the upper frame 172 (see FIG. 7). In this way, it is transmitted to the reinforcing member 38. Further, the front impact load acting from the front of the vehicle body is transmitted through the vertical side 172b of the upper frame 172 and the horizontal side 173a of the cowl side panel 173 as shown by the arrow g2 in the lower frame portion 41 (the front pillar lower portion 31 and the side sill portion 33). ). At this time, in the extending portion 171 of the reinforcing member 38, the front collision loads transmitted as indicated by the arrows g1 and g2 are load-passed to each other as indicated by the arrow g3.
- the reinforcing member (stiffener) 38 disposed in the front pillar upper portion (front half portion) 37a is joined (coupled) to the upper end 31a of the front pillar lower portion 31 of the high-strength portion disposed in the lower part of the vehicle body.
- the upper member joint portion 178 of the upper member 20 is overlapped (wrapped) on the extension portion 171 of the reinforcing member 38 with increased strength and the front surface 54 of the front pillar lower portion 31 with increased strength. Since the wrap portion 182 is formed, the front collision load acting from the front of the vehicle body is transmitted to the reinforcing member 38 as indicated by the arrow g1, and the front pillar lower portion 31 and the side sill portion as indicated by the arrow g2 as described above. 33 is distributed and transmitted. Therefore, load transmission is smoothly transmitted (load path) to the upper frame portion 42 and the lower frame portion 41. As a result, it is possible to prevent the front pillar lower portion 31 and the side sill portion 33 from being bent at the bent portion 32.
- the vehicle body side structure 10 includes a side panel outer 14 that covers the side of the vehicle body from the outside.
- the side panel outer 14 includes a front pillar lower portion 31 formed of a high-strength steel plate, a front pillar upper portion 37a formed of a normal steel plate, and a reinforcing member 38 disposed along the front pillar upper portion 37a.
- the front pillar upper portion 37a is formed by using a normal steel plate for the front pillar upper portion 37a that requires press forming of sharp ridgelines 183a to 183c (see FIG. 5) in relation to the door and the windshield. Molding can be performed easily.
- the upper end 31a of the front pillar lower portion 31 is coupled to the back surface of the lower end (extension portion) 37c of the front pillar upper portion 37a, and the front end 38a of the reinforcing member 38 is coupled to the rear surface of the upper end 31a of the front pillar lower portion 31.
- the lower end position of the normal steel plate (the lower end 37c of the front pillar upper portion 37a) is extended to a position that does not affect the appearance, and the high strength member is integrated to the rear end (the desired portion) of the upper member 20 to which the front impact load is input. It is possible to pass. Thereby, high intensity
- the reinforcing member 38 is formed with an extending portion 171 that extends substantially vertically below the front end 38 a, and the extending portion 171 is joined to the upper end 31 a of the front pillar lower portion 31.
- the front pillar lower portion 31 can be connected even at a low position. Thereby, the freedom degree of design of the side panel outer 14 can be expanded.
- the upper member 20 having a closed cross section extending in the vehicle longitudinal direction is joined to the front portion 54 of the front pillar lower portion 31 and the front end 38 a of the reinforcing member 38.
- the upper member 20 has a divergent shape toward the rear, and an upper member joint portion 178 for joining the front portion 54 of the front pillar lower portion 31 and the front end 38a of the reinforcing member 38 is formed at the end portion of the divergent shape.
- the extension line L1 extending to the front and rear of the vehicle body along the joint portion 181 between the portion 31 and the reinforcing member 38 passes through substantially the center of the upper member joint portion 178, the reinforcing member 38 of the front pillar upper portion 37a and the high strength
- the front collision load can be distributed almost evenly to the front pillar lower portion 31 of the front pillar lower portion 31.
- the front pillar lower portion 31 formed of a high-strength steel plate is integrally formed with the side sill portion 33 extending from the lower portion of the front pillar lower portion 31 to the rear of the vehicle body via the bent portion 32.
- a load can be continuously transmitted from the pillar lower portion 31 to the side sill portion 33 through the bent portion 32.
- the side walls 53, 63, 73 of the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 are configured with flat surfaces without irregularities, and therefore, bending at the bent portion 32 is suppressed. Can do.
- the reinforcing member 38 is joined to the side wall 53 and the front wall 54 of the front pillar lower portion 31, a large amount of front impact load can be transmitted to the front pillar upper portion 37a. As a result, the weight of the front pillar lower portion 31 can be reduced.
- a reinforcing member 191 is attached between the upper member 20 and the front pillar lower portion 31.
- the upper member 20 and the reinforcing member (reinforcing structure) 191 form a closed cross section. That is, the vehicle body side structure 190 has a reinforcing structure 191 on the upper member 20 toward the front pillar lower portion 31.
- the upper member 20 has a reinforcing structure toward the front pillar lower portion 31, a large amount of front collision load can be transmitted to the front pillar lower portion 31. Thereby, the weight reduction of the front pillar upper part 37a can be achieved.
- the reinforcing member 38 of the vehicle body side structure 10 according to the present invention may be a hollow material such as a pipe in addition to a member that forms a closed cross section with the roof rail inner. Further, the reinforcing structure 191 of the vehicle body side structure 190 according to the present invention may have a reinforcing shape (such as a bead) integrally formed with the upper member 20.
- the stiffener 38 has a front portion 38 a joined to the upper end 31 a of the front pillar lower portion 31 and a rear portion (rear intermediate portion) 38 b joined to the upper end 35 a of the center pillar portion 35.
- the upper end 35 a of the center pillar portion 35 is joined to the outer surface 38 c (see FIG. 20A) of the stiffener 38 in the roof rail portion 37, and the lower end 35 b is connected to the side sill portion 33. It is joined.
- the center pillar portion 35, the roof rail portion 37, the front pillar lower portion 31, the side sill portion 33, and the rear pillar portion 36 form front and rear door openings 44A and 44B (see FIG. 18).
- the door hinge surface 48 formed on the side surface (vehicle width surface) 35e of the center pillar portion 35 is made flat and continuous with the vehicle width outer surface (side wall) 73 of the side sill portion 33 (see FIG. 17A).
- the roof rail portion 37 has an extension portion 37c extending toward the center pillar portion (center pillar outer) 35 side.
- the extension 37c is placed on the lower surface side of the upper end 35a of the center pillar 35 so that the lower end of the extension 37c is hidden by a door (not shown).
- the center pillar part 35 is inserted into the extension part 37 c of the roof rail part 37.
- the upper end 35 a of the center pillar portion 35 is joined to the outer surface 38 c of the stiffener 38.
- a sealer (not shown) is applied to a joint portion between the center pillar portion 35 and the extension portion 37c.
- the center pillar part 35 is covered with a side sill part 33 having a hat-shaped cross section.
- the ridge lines 35 c and 35 d of the center pillar part 35 having a cross-sectional hat shape are continuous with the ridge line 78 of the side sill part 33.
- the roof rail 45 includes a roof rail inner 29, a roof rail portion 37, and a stiffener 38.
- the stiffener 38 is provided inside the roof rail portion 37.
- the stiffener 38 and the roof rail inner 29 form a closed cross section (rail side closed cross section) 49.
- the upper part of the center pillar inner 25 is joined to the inside of the roof rail inner 29.
- the center pillar portion 35 is connected to a roof arch 84 that extends from the upper portion of the center pillar inner 25 in the vehicle width direction via a stiffener 38 and a center pillar inner 25.
- An upper portion of the roof arch 84 is covered with a roof panel 85.
- a plurality of roof arches may be arranged at the front and rear of the vehicle body at the height of the closed section 49.
- the center pillar portion 35 is hot stamped with a cold rolled steel plate (hot stamp material) having a tensile strength of 590 to 1180 MPa.
- the hot stamping method is a method that makes it easier to deform by heating the steel plate to a high temperature, and at the same time forming the steel plate with a mold and quenching rapidly to obtain higher strength than before forming. It is. That is, it is possible to increase the tensile strength to about 1500 MPa by rapidly cooling a steel plate heated to a high temperature.
- the center pillar part 35 may be formed by partially press-forming cold-rolled steel sheets having different tensile strengths of 590 to 1180 MPa and then connecting them.
- center pillar inner 25 may also be hot stamped with a cold-rolled steel plate of high strength steel plate, and the center pillar 47 may be formed with the center pillar portion 35 and the center pillar inner 25.
- the center pillar portion 35 is hot stamped with a cold rolled steel plate having a tensile strength of 590 to 1180 MPa, so that a large forming load is not required at the time of pressing, and cracks and the like can be prevented from occurring in the center pillar portion 35. , Can maintain the stability of quality.
- center pillar part 35 a cold rolled steel sheet having a tensile strength of 590 to 1180 MPa is partially used, and a tailored blank material in which different materials are joined in advance is used. Can be used.
- the center pillar portion 35 and the center pillar inner 25 form a closed section 99 that does not incorporate a center pillar stiffener.
- the stiffener 38 is formed of a cold-rolled steel sheet having a tensile strength exceeding 980 MPa.
- a galvanized steel plate (JAC980YL) is used.
- JAC980YL is a high-tensile steel galvanized steel sheet and has a tensile strength of 980 MPa or more.
- the roof rail portion 37 and the rear panel portion 34 are integrally formed of a cold-rolled steel plate having a tensile strength of 270 MPa that is easy to press-mold.
- a galvanized steel sheet (JAC270E) is used.
- the JAC270E material is a normal galvanized steel plate, has a tensile strength of 270 MPa or more, and is a material with good workability with a low yield point.
- the roof rail portion 37, the rear pillar portion 36, and the rear fender panel 39 of the side panel outer 14 are made of JAC270E material
- the front pillar lower portion 31 and the side sill portion 33 are made of JAC980YL high strength steel plate (high tensile steel plate).
- the center pillar portion 35 is formed of a high-tensile steel plate (hot stamp material) of 1000 MPa or more, and the upper end 35a of the center pillar portion 35 is formed on the outer surface 38c of the stiffener 38 of the high-tensile steel plate (high-tensile material) (FIG. )), And the lower end 35b is joined to the side sill portion 33 of a high-tensile steel plate (high-tensile material) to form the vehicle body side structure 10 (side panel outer 14).
- the roof rail portion 37 uses a JAC270E material having good formability. Thereby, as shown in FIG.20 (b), the press molding crack of the part with a small bending radius of the corner
- the front pillar lower portion 31 and the side sill portion 33 are integrally formed of a high-tensile steel plate (high-tensile material) made of JAC980YL. Thereby, the vehicle body rigidity is improved and the side collision strength is improved.
- the center pillar portion 35 was molded with a hot stamp material of 1180 MPa or more for weight reduction. This facilitates molding and increases the strength of the center pillar portion 35.
- the upper end 35a of the center pillar part 35 is joined to the outer surface 38c of the stiffener 38 of the high-tensile steel plate (high-tensile material), and the lower end 35b is joined to the side sill part 33 of the high-tensile steel plate (high-tensile material).
- the frame portion 97 (FIG. 18) in which the front door opening 44A (FIG. 18) is formed is used as a high-strength frame, and the vehicle body rigidity is improved and the side impact load support strength is increased.
- the side panel outer 14 is joined to the upper frame portion 42 to which the lower frame portion 41 formed separately is joined to the center pillar portion 35.
- the center pillar portion 35 is welded to the roof rail portion 37 and the side sill portion 33, the upper end 35a of the center pillar portion 35 is set to the inside of the extension portion 37c of the upper frame portion 42, and the lower end 35b is set to the outer surface 72 of the lower frame portion 41. , Welded.
- FIG. 17 (b) is an enlarged view of part a in FIG. 17 (a).
- the extended portion 37c of the roof rail portion 37 of a normal steel plate is placed on the surface side of the upper end 35a of the center pillar portion 35 of the high strength member (FIG. 18). It can be combined with a stiffener 38 which is a strength part inside the roof rail portion 37 (see FIG. 20).
- FIG. 17 (c) is an enlarged view of part b of FIG. 17 (a).
- the center pillar portion 35 of the high strength member is placed on the side sill portion 33 of the high strength member, so that the side sill portion 33 does not need to open the outer surface 72, and the side sill portion 33 is not bent. It eliminates the danger and works effectively against front and side collisions.
- the side panel outer 14 includes an upper frame portion 42 in which a roof rail portion 37, a rear pillar portion 36, and a rear fender panel 39 are integrally formed by press forming of a normal steel plate, and a side sill portion 33 from the front pillar lower portion 31.
- a high-tensile stiffener 38 is coupled to the inside of the roof rail portion 37 to form a high-strength frame portion 97 around the front door opening 44A.
- the upper end 35a of the center pillar portion 35 is joined (bonded) to a stiffener 38 formed of a high strength steel plate in the roof rail portion 37 as indicated by an arrow a1, and the lower end 35b is connected to a side sill portion 33 formed of a high strength steel plate. Join (bond) as in a2.
- a stiffener 38 formed of a high-strength steel plate and a front pillar lower portion 31 formed of a high-strength steel plate are joined as indicated by an arrow a3.
- the frame part 97 (consisting of the stiffener 38, the front pillar lower 17, the side sill 16, and the center pillar 47. See FIG. 14) forming the front door opening 44A can be a high-strength frame.
- the vehicle body rigidity can be improved and the side impact load support strength can be increased.
- a roof rail portion 37 and a rear panel portion 34 integrally formed of a cold rolled steel plate (270 material) exceeding a tensile strength of 270 MPa.
- 980 material is arranged on the inner surface of the 270 material as indicated by arrows c1 and c2. This makes it possible to integrally stack 980 materials up to a portion where strength is required, regardless of the division position of 270 materials.
- the side impact load acts on the center pillar portion (center pillar outer) 35 as indicated by an arrow d1.
- the load inputted to the center pillar portion 35 at the time of a side collision is inputted to the stiffener 38 as shown by an arrow d2.
- the load input to the stiffener 38 is distributed to the roof arch 84 through the roof rail inner 29 and the center pillar inner 25 as indicated by an arrow d3.
- the roof rail part 37 is a normal steel plate (270 material)
- angular part 87 by press molding can be made small.
- the clearance gap between the roof rail part 37 and the front door 98A or the rear door 98B (FIG. 16) can be narrowed, and the external appearance of a vehicle can be improved.
- a reinforcing member 38 that reinforces the roof rail portion 37 is provided in the roof rail portion 37 of the side panel outer frame portion 96 (FIG. 18), and an upper portion (upper end) 35 a of the center pillar portion 35 is a reinforcing member 38. Since the lower portion (lower end) 35b of the center pillar portion 35 is flush with the outer surface (vehicle width outer surface) 72 of the side sill portion 33, the upper portion 35a of the center pillar portion 35 is also aligned with the outer surface 38c of the center pillar portion 35. Also in the lower part 35b, it can be set as the structure where rain water etc. do not enter from the outside easily.
- the vehicle body side part structure 130 includes a side panel outer 131 and a side sill garnish 132.
- the side panel outer 131 is joined to a side panel inner member such as the side sill inner 133 or the center pillar inner 134 so as to form a closed cross section.
- the side panel outer 131 includes a side sill portion 143 that covers the side sill inner 133 from the outside of the vehicle body, a front pillar lower portion 141 that is provided in front of the side sill portion 143, and a center pillar portion 145 that covers the center pillar inner 134 from the outside of the vehicle body.
- a rear pillar portion 146 that forms the rear side of the vehicle body
- a rear fender panel 149 that is formed behind the rear pillar portion 146 and covers the rear portion of the vehicle body
- a roof rail portion 147 that forms the upper portion of the vehicle body, and the roof rail portion 147 is reinforced from the inside.
- the rear pillar portion 146 and the rear fender panel 149 constitute a rear panel portion 144.
- the side sill portion 143 extends linearly in the vehicle body longitudinal direction.
- the front pillar lower portion 141 is raised substantially vertically from the front end of the side sill portion 143.
- the side sill portion 143 and the front pillar lower portion 141 are integrally formed via the bent portion 142.
- the front pillar lower portion 141, the bent portion 142, and the side sill portion 143 are joined in advance with different materials and press-molded to form the lower frame portion 151.
- roof rail part 147 and the rear panel part 144 are integrally formed of the same material and constitute the upper frame part 152.
- the stiffener 148 is formed along the roof rail portion 147.
- the outer surfaces of the side walls 141 a, 142 a, 143 a are formed flat from the front pillar lower portion 141 to the side sill portion 143. Further, the side sill portion 143 is covered with a separate side sill garnish 132.
- the outer surface 132a of the side sill garnish 132 and the outer surface 136a of the fender panel (front fender panel) 136 shown in FIG. 24 are continuous.
- the front pillar lower portion 141, the side sill portion 143, and the bent portion 142 are configured with the outer surfaces of the side walls 141a, 142a, 143a at the same vehicle width position.
- the bent portion 142 of the front pillar lower portion 141 and the side sill portion 143 where stress is concentrated due to the front wheel being pushed up during traveling the front pillar lower portion 141 to the side sill portion 143 Since the side walls 141a, 142a, and 143a are flattened so as not to form a step, there is no crease, and out-of-plane deformation can be suppressed and rigidity is improved.
- a flat appearance surface is constituted by a fender panel (front fender panel) 136 and a resin side sill garnish 132 which is a separate part. Since the exterior surface is formed by the resin side sill garnish 132 as a separate part, the outwardly protruding shape of the side sill portion 143 is eliminated, so that the side pillar 143 and the front pillar lower portion 141 including the bent portion 142 can be easily flattened. Can be configured.
- the side sill 137 includes a side sill portion 143 of the side panel outer 131 and a side sill inner 133 having a closed cross section formed by the side sill portion 143.
- the center pillar 138 includes a center pillar portion 145 of the side panel outer 131 (FIG. 21) and a center pillar inner 134 having a closed cross section formed by the center pillar portion 145.
- the center pillar portion 145 is a member that extends substantially vertically from the middle of the side sill portion 143 in an I-shape (see FIG. 21).
- An upper portion 145a of the center pillar portion 145 is directly connected to a roof arch 155 extending in the vehicle width direction.
- a lower portion 145 b of the center pillar portion 145 is directly joined to the side sill portion 143.
- the roof arch 155 is covered with a roof panel 156.
- black circles indicate weld locations.
- the side panel outer frame portion 166 is formed by joining both ends of the lower frame portion 151 and the upper frame portion 152 (including the reinforcing member 148).
- the side panel outer 131 is formed by joining a center pillar portion 145 to a side panel outer frame portion 166 formed from a lower frame portion 151 and an upper frame portion 152.
- the upper frame portion 152 is a cold-rolled steel plate (ordinary steel plate) having a tensile strength exceeding 270 MPa, which is easy to press-mold, and has the same thickness.
- the first blank material 161 of the normal steel plate having the first thickness is used, and the first blank material 161 is press-molded.
- the lower frame 151 has a front pillar lower portion 141 (including the bent portion 142) (FIG. 21) and a second high-tensile steel plate (tensile strength).
- 980 MPa) of the second blank material 162 is used, and the third blank material 163 of a high-tensile steel plate having a third thickness (tensile strength of 980 MPa) is used for the side sill portion 143 (FIG. 21).
- These 2nd and 3rd blank materials 162 and 163 are joined, the composite blank material (tailored blank material) 164 is formed, and this composite blank material 164 is press-molded.
- the third thickness is thicker than the second thickness.
- the center pillar 145 is hot stamped with a cold rolled steel plate (hot stamp material) having a tensile strength of 590 to 1180 MPa.
- the center pillar portion 145 formed by hot stamping has an upper portion 145a attached from the inside of the side panel outer frame portion 166 and a lower portion 145b attached from the outside of the side panel outer frame portion 166. It is done.
- the lower portion 145b of the center pillar portion 145 contacts and joins the side sill portion 143, so that the ridge line 143b in the side sill portion 143 extends without interruption from the rear end to the front end.
- the center pillar portion 145 formed by hot stamping is attached to the side panel outer frame portion 166, and the door openings 168A and 168B are formed on the front and rear sides.
- the side sill portion 253 includes the side sill inner 255.
- a closed section cannot be constructed. Therefore, a separate partition wall (bulk head) 256 is required, and it is difficult to form a closed cross section in the side sill 251.
- the center pillar portion 145 is attached to the side panel outer frame portion 166. Therefore, in the side sill 137 and the center pillar 138, the side sill 137 can easily form a closed cross section. Further, the lower portion 145 b of the center pillar portion 145 is directed downward with respect to the side sill portion 143, and the lower portion 145 b of the center pillar portion 145 is covered with the side sill garnish 132. Accordingly, it is possible to effectively prevent rainwater entering as indicated by the arrow e1.
- the side panel outer 262 is integrally formed of a cold-rolled steel plate having a low tensile strength in order to form an external appearance surface. Further, since the outer surface 263a of the side sill portion 263 is continuous with the outer surface 264a of the fender panel (front fender panel) 264, the side sill portion 263 projects outward. Accordingly, a step 266 is generated between the front pillar lower portion 265 and the side sill portion 263.
- the upper member (not shown) located in front of the front pillar lower portion 265 is deformed upward by pushing up the front wheel during traveling, etc., the front pillar lower portion 265 is bent rearward, and the front pillar lower portion 265 and the side sill portion 263 are deformed. Stress concentrates on the step 266, and a load that breaks inward or outward acts on the front pillar lower portion 265 (deforms out of plane).
- the front pillar lower portion 141 and the side sill portion 143 are side walls 141a, 142a,
- the outer surface (outer surface) of 143a is configured at the same vehicle width position.
- a front pillar low stiffener 271 and a side sill reinforcement 272 are configured as separate parts and connected in a state where the outer surface is bent. Each is vulnerable. Moreover, since it is comprised by two parts, when load is input, local deformation
- a step 274 is formed because the position of the side wall surface 271a of the front pillar lower stiffener 271 and the side wall surface 272a of the side sill reinforcement 272 are different in the vehicle width direction.
- a high-tensile steel plate (tensile strength of 980 MPa) is used, and the outer surface 141a of the front pillar lower portion 141 and the outer surface of the side sill portion 143 are used. Since 143a is formed flat, there is no crease and the out-of-plane deformation can be suppressed, leading to improved rigidity. As a result, it is possible to improve the vehicle body static rigidity such as the bending rigidity, and to improve the vehicle body dynamic rigidity in a dynamic state by pushing up the front wheel during traveling.
- the mating surface 169 of the center pillar portion 145 and the side panel outer frame portion 166 is directed toward the lower side of the vehicle body, so that rainwater entering as shown by the arrow f1 is effectively prevented. Can be prevented.
- the center pillar portion 145 has a structure that effectively prevents rainwater even in the lower portion 145b.
- the center pillar portion 145 is hot stamped with a cold rolled steel plate (hot stamp material) having a tensile strength of 590 to 1180 MPa, as described above. Since the upper part 145a of the high-strength center pillar part 145 is directly joined to the roof arch 155 without a thin plate, when the side pillar occurs in the center pillar part 145, the center pillar part 145 is indicated by an arrow g1. Therefore, the load can be efficiently transmitted to the roof arch 155.
- a cold rolled steel plate hot stamp material
- the vehicle body side structure 130 of the fourth embodiment includes a side panel outer 131 that covers the side of the vehicle body from the outside, as shown in FIGS.
- the roof rail portion 147 and the rear panel portion 144 of the side panel outer 131 are used as an upper frame portion 152 of a normal steel plate, and the front pillar lower portion 141 and the side sill portion 143 of the side panel outer 131 are used as a lower frame portion 151 of a high-tensile steel plate.
- the side panel outer frame part 166 is formed by joining both ends of the parts 151 and 152.
- a bent portion 142 of the front pillar lower portion 141 and the side sill portion 143 flattens the outer surfaces 141a, 142a, 143a from the front pillar lower portion 141 to the side sill portion 143, and the side sill portion 143 is covered with a separate side sill garnish 132. Then, the outer surface 132a of the side sill garnish 132 and the outer surface 136a of the fender panel (front fender panel) 136 are made continuous.
- the roof rail portion 147 is made of a normal steel plate having good press formability, cracks during the press forming of the roof rail portion 147 can be suppressed, and the front pillar lower portion 141 and the side sill portion 143 are integrated with a high-tensile steel plate. Therefore, the vehicle body rigidity can be improved.
- front pillar lower portion 141 and the side sill portion 143 have the outer surfaces 141a, 142a, 143a flattened from the front pillar lower portion 141 to the side sill portion 143, deformation of the front pillar lower portion 141 can be suppressed. , Body rigidity can be improved.
- the front pillar lower portion 141 and the side sill portion 143 in which stress is concentrated due to the front wheel being pushed up during traveling, and the outer surfaces 141a, 142a, 143a are flattened from the front pillar lower portion 141 to the side sill portion 143.
- There is no cause of breakage in the pillar lower portion 141 and the side sill portion 143 and the deformation of the front pillar lower portion 141 and the side sill portion 143 can be suppressed, thereby contributing to the improvement of the vehicle body rigidity.
- the center pillar portion 145 formed by hot stamping is attached to the side panel outer frame portion 166, and door openings 168A and 168B are formed in the front and rear. Since the center pillar portion 145 formed by hot stamping has high rigidity and strength, the vehicle body strength can be further improved.
- the center pillar part 145 formed by hot stamping has an upper part 145a attached from the inside of the side panel outer frame part 166, and a lower end 145b attached from the outside of the side panel outer frame part 166. That is, the lower end 145b of the center pillar portion 145 can extend the ridge line 143b of the side sill portion 143 without interruption from the rear end to the front end, so that it is possible to improve the collision performance of the front collision, the rear collision, and the side collision.
- the upper end 145a of the center pillar part 145 can be coupled to the roof arch 155, for example, the load acting on the center pillar part 145 can be directly transmitted from the center pillar part 145 to the roof arch 155. Thereby, the improvement of a side collision performance can be aimed at. Moreover, it becomes possible to eliminate members, such as a reinforcement bracket.
- a first blank material 161 of a normal steel plate having a first thickness is used for the upper frame part 152, and the first blank material 161 is press-molded.
- the second blank material 162 of the high-strength steel plate having the second thickness is used for the front pillar lower portion 141 of the lower frame portion 151, and the high-strength steel plate having the third thickness is used for the side sill portion 143 of the lower frame portion 151.
- the third blank material 163 is used, the second and third blank materials 162 and 163 are joined to form a composite blank material 164, and the composite blank material 164 is press-molded.
- the joining line 165 between the blank materials 162 and 163 is a door or Hidden behind the side silgarnish 132 and inconspicuous.
- the center pillar 35 is hot stamped with a cold-rolled steel plate having a tensile strength of 590 to 1180 MPa as shown in FIG. 15.
- the present invention is not limited to this. This also does not prevent other parts from being hot stamped from a cold-rolled steel sheet having a tensile strength of 590 to 1180 MPa.
- the vehicle body side part structure 10 uses a cold-rolled steel plate having a tensile strength of 980 MPa for the stiffener 38 of the roof rail portion 37, but is not limited to this. However, this does not preclude the use of a cold-rolled steel sheet having a tensile strength exceeding 980 MPa.
- the center pillar portion 35 is connected to a roof arch 84 extending in the vehicle width direction from the upper portion of the center pillar inner 25 with a closed section 49 interposed therebetween.
- a plurality of them may be provided.
- the plurality of roof arches are joined to the closed cross-section 49 in the front-rear direction, so that the side impact load can be distributed to the plurality of roof arches via the closed cross-section.
- the reinforcing member may be a hollow material such as a pipe in addition to a member that forms a closed cross section with the roof rail inner.
- the vehicle body includes a dashboard lower 23 that partitions the engine room 13 and the vehicle compartment 12, an outrigger 24 that connects the side sill 16 side and the floor frame side (not shown),
- the side sill inner 21 extending in the front-rear direction
- the front pillar inner 27 extending in the height direction of the vehicle body
- the roof rail inner 29 extending in the front-rear direction of the vehicle body at the upper part of the vehicle body
- the rear side of the vehicle body The rear pillar inner 26, the side sill inner 21, the front pillar inner 27, the roof rail inner 29, and the rear pillar inner 26 are covered from the outside of the vehicle body, and the side sill portion 33 of the side panel outer 14 is covered from the outside.
- the side panel 11 includes a side panel outer 14 and a side panel inner 19.
- the side panel outer 14 includes a side sill portion 33 that covers the side sill inner 21 from the outside of the vehicle body, a front pillar lower portion 31 that covers the front pillar lower inner 22 from the outside of the vehicle body, and a center pillar that covers the center pillar inner 25 from the outside of the vehicle body.
- stiffener 38 is a side sill portion 33 that covers the side sill inner 21 from the outside of the vehicle body, a front pillar lower portion 31 that covers the front pillar lower inner 22 from the outside of the vehicle body, and a center pillar that covers the center pillar inner 25 from the outside of the vehicle body.
- the side sill portion 33 extends linearly in the longitudinal direction of the vehicle body.
- the front pillar lower portion 31 is raised substantially vertically from the front end of the side sill portion 33.
- the side sill portion 33 and the front pillar lower portion 31 are integrally formed via the bent portion 32. That is, the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 constitute an L-shaped member (lower frame portion) 41.
- the bent portion 32 is provided with a substantially rectangular reinforcing member 46 that is disposed within the closed section of the bent portion 32 and increases the rigidity and strength of the bent portion 32.
- the reinforcing member 46 serves as a jack-up base to which a jack (not shown) is applied when the vehicle body is lifted.
- the dashboard lower 23, the outrigger 24, the side sill inner 21, the front pillar inner 27 (including the front pillar lower inner 22), the roof rail inner 29, and the rear pillar inner 26 are side panel inner (inner side) provided on the side of the vehicle body. Member) 19.
- the bent portion 32 includes a vertical portion 117 connected to the front pillar lower portion 31, a bent portion 118 serving as a central portion, and a horizontal portion 119 connected to the side sill portion 33.
- the center pillar portion 35 is a member extending in an I shape substantially perpendicularly from the middle of the side sill portion 33.
- the roof rail portion 37 and the rear pillar portion 36 are a composite member 42 that is integrally formed of the same material.
- the roof rail stiffener 38 is formed along the roof rail portion 37.
- the side panel outer 14 is formed by joining the L-shaped member 41, the composite member 42, the center pillar portion 35, and the roof rail stiffener 38 that are formed separately.
- the L-shaped member 41 in which the side sill portion 33 and the front pillar lower portion 31 are integrally formed is formed of a cold-rolled steel plate of a high-tensile steel plate such as SPC980.
- the front pillar 18 includes a front pillar inner 27, a front pillar lower portion 31, and a front portion of the roof rail portion 37.
- the front pillar inner 27 includes a front pillar lower inner 22 and an inclined portion 28.
- the front pillar lower 17 includes a front pillar lower inner 22 and a front pillar lower portion 31.
- the side sill 16 includes a side sill inner 21 and a side sill portion 33.
- the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 are formed in a hat cross-sectional shape. That is, the hat cross-sectional shape (the front pillar lower portion 31, the bent portion 32, and the side sill portion 33) is formed on the inner side of the vehicle body and along the door opening 44, and the inner flange 51, 61, 71.
- the reinforcing member 46 includes an inner joint portion 101 connected to the inner flange 61 of the bent portion 32, an outer joint portion 102 connected to the outer flange 65 of the bent portion 32, and A ridgeline (bending portion) 103 formed in the central portion of the arc of the inner joint portion 101 to the outer joint portion 102, a first cross bead 104 and a second cross bead 105 formed so as to cross the ridge line 103, First to third vertical beads 106 to 108 extending upward from a lower position of the joint portion 102.
- the ridgeline (bending portion) 103, the first cross bead 104, the second cross bead 105, and the first to third vertical beads 106 to 108 correspond to a cross-section changing portion that reinforces the bent portion 32.
- the reinforcing member 46 includes an inner joint portion 101 formed in one corner portion 111 having a substantially rectangular shape and joined to the inner flange 61, another corner portion 112 facing the one corner portion 111, and another corner portion 112.
- An outer joint portion 102 formed on two sides 113 and 114 sandwiched between the outer flanges 65 and joined to the outer flange 65.
- the outer joint portion 102 joined to the outer flange 65 (FIG. 33) around the inner joint portion 101 joined to the inner flange 61 is formed in a substantially radial shape.
- the inner joint portion 101 is formed only at the central portion of the arc of the bent portion 118 of the bent portion 32.
- the outer joint portion 102 is formed across the vertical portion 117, the bent portion 118, and the horizontal portion 119 of the bent portion 32.
- the inner joint portion 101 is welded only to the center portion of the arc of the inner flange 61 at the bent portion 118 at the welding points 121a and 121b.
- the outer joint portion 102 is welded to the outer flange 65 (FIG. 33) in the vertical portion 117, the bent portion 118, and the horizontal portion 119 at the welding points 122a to 122h.
- the reinforcing member 46 is welded to the inner flange 61 and the outer flange 65, with the welding points 122a to 122h being arranged substantially radially about the welding points 121a and 121b. That is, the reinforcing member 46 made of a substantially rectangular plate material can be disposed inside the bent portion 32 having a U-shaped cross section, and the cross-sectional deformation of the bent portion 32 can be suppressed.
- the reinforcing member 46 is disposed on the entire bent portion 32 immediately above. Therefore, a predetermined strength can be secured at the bent portion 32.
- FIG. 38 to 41 show cross-sectional shapes when the bent portion 32 is radially cut around one point of the inner flange 61 of the bent portion 32.
- FIG. 38 As shown in FIG. 38, at the upper portion 32a of the bent portion 32, the inner joint portion 101 of the reinforcing member 46 is joined to the inner flange 61, and the outer joint portion 102 of the reinforcing member 46 is joined to the outer flange 65 to reinforce.
- the side sill inner 21 is joined from the intermediate portion 109 to the outer joint portion 102 of the member 46, the inner flange 22a of the front pillar lower inner 22 is joined to the inner joint portion 101 of the reinforcing member 46, and the front pillar lower is joined to the side sill inner 21.
- the outer flange 22 b of the inner 22 is joined, and the dashboard lower 23 is joined to the outer flange 22 b of the front pillar lower inner 22.
- the inner joint portion 101 of the reinforcing member 46 is joined to the inner flange 61, and the outer joint portion 102 of the reinforcing member 46 is joined to the outer flange 65.
- the inner flange 21 a of the side sill inner 21 is joined to the vicinity of the inner joint portion 101 of the reinforcing member 46, the outrigger 24 is joined to the outer joint portion 102 of the reinforcing member 46, and the dashboard lower 23 is joined to the side sill inner 21.
- the inner joint portion 101 of the reinforcing member 46 is joined to the inner flange 61, and the outer joint portion 102 of the reinforcing member 46 is joined to the outer flange 65.
- the inner flange 21 a of the side sill inner 21 is joined to the vicinity of the inner joint portion 101 of the reinforcing member 46, the outrigger 24 is joined to the outer joint portion 102 of the reinforcing member 46, and the dashboard lower 23 is joined to the side sill inner 21.
- the inner joint portion 101 of the reinforcing member 46 is joined to the inner flange 61, and the outer joint portion 102 of the reinforcing member 46 is joined to the outer flange 65 to reinforce.
- the side sill inner 21 is joined from the vicinity of the inner joint portion 101 of the member 46 to the outer joint portion 102, the inner flange 21 a of the side sill inner 21 is joined to the vicinity of the inner joint portion 101 of the reinforcing member 46, and the outer joint of the reinforcing member 46 is joined.
- the outer flange 21 b of the side sill inner 21 is joined to the portion 102, and the dashboard lower 23 is joined to the side sill inner 21.
- the vehicle body side structure 10 includes the side panel outer 14 formed with the front pillar lower portion 31, the bent portion 32, and the side sill portion 33 shown in FIG. A substantially rectangular reinforcing member 46 disposed in the bent portion 32 and within the closed cross section; an inner member 19 (see FIG. 34) such as the dashboard lower 23, the outrigger 24, the side sill inner 21, and the front pillar inner 27; Consists of Further, the rigidity and strength of the bent portion 32 are improved by passing the reinforcing member 46 to all the portions of the bent portion 32.
- the position in the vehicle width direction is different between the inner flange 61 in the A portion and the outer flange 65 in the B portion. That is, the outer joint portion 102 and the inner joint portion 101 of the reinforcing member 46 are usually offset inward in the vehicle width, and it is often difficult to pass the gap linearly between the reinforcing member 46 and the reinforcing member. 46 bends. For this reason, the ridgeline 103 enters the reinforcing member (jack-up base) 46, and the shape easily deforms.
- the reinforcing member 46 can be disposed in the entire cross section of the bent portion 32, and the vehicle body rigidity can be further improved.
- the outer joint 102 is formed radially on the substantially rectangular reinforcing member 46 around the inner joint 101, the inner joint 101 is joined to the inner flange 61, and the outer joint 102.
- the outer flange 65 is welded radially.
- the reinforcing member 46 is arranged in the entire cross section of the bent portion 32, and the cross section deformation of the bent portion 32 is suppressed.
- a substantially rectangular reinforcing member 46 whose cross section is reinforced by the first to third vertical beads 106 to 108 is arranged immediately above the bent portion 32, and the strength of the jack-up portion is increased. It can be secured.
- the reinforcing member 46 shown in FIGS. 38 to 41 is arranged in the entire cross section of the bent portion 32, thereby preventing the (breathing) deformation of the cross section.
- the vehicle body side structure 220 includes a reinforcing member (not shown) on the front end inside 224a and the outer flange 225 of the side wall 224 on the side sill portion (horizontal portion) 223 side in the bent portion 222.
- Jack up base) 226 is joined, and the extension 227 of the reinforcing member 226 is joined to the outer flange 225 on the front pillar lower part (vertical part) 221 side.
- the structure in which the reinforcing member 226 is joined to the front end inside 224 a and the outer flange 225 of the bent portion 222, and the extension portion 227 of the reinforcing member 226 is joined to the outer flange 225 of the bent portion 222 is within the cross section of the bent portion 222. Since the reinforcing member 226 is not disposed throughout, the deformation of the cross section of the bent portion 222 is large.
- the reinforcement member 46 is arranged in the entire cross section of the bent portion 32, which leads to suppression of breathing deformation in the cross section of the bent portion 32.
- the reinforcing member 46 is a jack-up base, and by forming the first to third vertical beads 106 to 108 for suppressing deformation of the reinforcing member 46, the effect of suppressing cross-sectional deformation can be further enhanced.
- the inner side member 19 provided on the vehicle body side portion is covered with the side panel outer 14 from the outside, and the inner side member 19 and the side panel outer are covered.
- a closed cross-sectional structure is formed at 14.
- a side sill portion 33 extended in the longitudinal direction of the vehicle body on the side panel outer 14 and a front pillar lower portion formed integrally with the side sill portion 33 via a bent portion 32 and extended in the height direction of the vehicle body.
- inner flanges 51, 61, 71 and outer flanges 55, 65, 75 that are continuously formed in the front pillar lower portion 31, the side sill portion 33, and the bent portion 32 and are joined to the inner side member 19,
- a substantially rectangular reinforcing member 46 disposed in the bent portion 32 and within the closed cross section.
- the reinforcing member 46 is formed in one corner portion 111 having a substantially rectangular shape and is joined to the inner flange 61, another corner portion 112 facing the one corner portion 111, and another corner portion 112.
- An outer joint portion 102 formed on two sides 113 and 114 sandwiching the outer flange 65 and joined to the outer flange 65, and an outer joint joined to the outer flange 65 around the inner joint portion 101 joined to the inner flange 61. Since the joint portions are formed in a substantially radial shape, the reinforcing member 46 can be disposed in the entire cross section of the bent portion 32.
- the rigidity of the vehicle body can be improved and the stability of the vehicle (steering stability) can be improved.
- the outer joint portion 102 of the reinforcing member 46 is offset inward of the vehicle width with respect to the inner joint portion 101, so that the reinforcing member 46 is placed on the side panel outer 14 and the entire cross section of the bent portion 32. It can be along the inner side member 19.
- a ridge line 103 is formed on the reinforcing member 46 so as to protrude toward the side panel outer 14, and is formed from the inner joint portion 101 toward the substantially radial center of the outer joint portion 102, and the reinforcing beads 104 and 105 straddle the outer flange 65. Since it was formed, deformation of the reinforcing member 46 can be suppressed. By arranging the reinforcing member 46 in the entire cross section of the bent portion 32, the rigidity of the vehicle body can be further improved.
- the reinforcing member 46 is a jack-up base to which a jack (not shown) is applied when the vehicle body is lifted, the entire bent portion 32 reinforced in cross section is used as a jack-up point for lifting the vehicle body. be able to. As a result, sufficient rigidity and strength can be ensured at the jack-up point.
- the reinforcing member 46 includes cross-section changing portions (ridge line 103, first cross bead 104, second cross bead 105, and first to third vertical beads 106 to 108) that reinforce the bent portion 32. Therefore, strength and rigidity can be secured in the reinforcing member 46.
- the outer joint portion 102 is formed across the vertical portion 117, the bent portion 118, and the horizontal portion 119 of the bent portion 32, and the inner joint portion 101 is formed at the center of the arc of the bent portion 118. Only formed. As a result, the outside of the bent portion 32 can be reinforced with emphasis, and efficient reinforcement of the bent portion 32 can be realized.
- the first and second cross beads 104 and 105 and the first to third vertical beads 106 to 108 are separately formed.
- the cross beads and the vertical beads may be formed continuously.
- the vehicle body side structure according to the present invention is suitable for use in a passenger car having a vehicle body side structure including a side panel outer that covers the vehicle body side from the outside.
- SYMBOLS 10 Car body side part structure, 11 ... Side panel, 14 ... Side panel outer, 19 ... Side panel inner, 20 ... Upper member, 21 ... Side sill inner, 31 ... Front pillar lower part, 31a ... Upper end, 32 ... Bending part, 33 ... side sill part, 35 ... center pillar part, 35a ... upper part (upper end), 35b ... lower part (lower end), 37 ... roof rail part, 37a ... front pillar upper part, 37c ... lower end, 38 ... reinforcing member (stiffener), 38a ... Front end, 38c ... outer surface, 46 ... reinforcing member, 51, 61, 71 ...
- fender panel front fender panel
- 136a outer surface, 141 ... front pillar lower portion, 141a, 142a, 143a ... outer surface, 142 ... bent portion, 143 ... side sill portion, 143b ... ridge line, 145 ... Center pillar portion, 145a ... upper portion, 145b ... lower portion, 151 ... lower frame portion, 152 ... upper frame portion, 161, 162, 163 ... first to third blank materials, 164 ... composite blank material, 166 ... side panel outer Frame part, 171 ... extension part, 178 ... upper member joint part, 181 ... joint part,
Abstract
Description
フロントピラーロア部とサイドシル部との屈曲部が、フロントピラーロア部からサイドシル部に亘り外側面を平坦化し、サイドシル部を別体のサイドシルガーニッシュにより被覆し、サイドシルガーニッシュの外面とフェンダパネルの外面とを連続させる。
すなわち、ルーフレール部をプレス成形性のよい普通鋼板を使用するので、ルーフレール部のプレス成形時の亀裂を抑制することができるとともに、フロントピラーロア部及びサイドシル部を高張力鋼板で一体に形成するので、車体剛性を向上することができる。
また、フロントピラーロア部とサイドシル部は、フロントピラーロア部からサイドシル部に亘り外側面を平坦化したので、フロントピラーロア部の変形を抑制することができ、車体剛性を向上できる。
特に、走行時の前輪の突き上げ等により応力の集中するフロントピラーロア部とサイドシル部を、フロントピラーロア部からサイドシル部に亘り外側面を平滑化したので、フロントピラーロア部とサイドシル部とに折れのキッカケとなる要因がなくなり、フロントピラーロア部とサイドシル部との変形を抑制して車体剛性の向上に寄与することができる。
第2及び第3のブランク材で形成される下部枠部は、ドアやサイドシルガーニッシュで隠すことができるので、ブランク材同士の接合線がドアやサイドシルガーニッシュに隠れて目立たない。
補強部材に、略矩形状の一つのコーナ部に形成され、内フランジに接合される内接合部と、一つのコーナ部に対向する他のコーナ部及び該他のコーナ部を挟む二つの辺に形成され、外フランジに接合される外接合部と、を備え、内フランジへ接合される内接合部を中心として外フランジへ接合される外接合部が略放射状に形成されたので、屈曲部の断面内全体に板材からなる補強部材を通すことができる。これにより、屈曲部の強度及び剛性に寄与することができ、屈曲部の断面が繰り返し変形を受ける息継ぎ変形を抑えることができる。この結果、車体剛性を向上させることができ、車両の操縦安定性の向上を図ることができる。
サイドシル部33及びフロントピラーロア部31が一体的に形成されるL字状の下部枠部41は、日本工業規格(JIS)-SPC 980(以下、単にSPC980と表記する。)等の高張力鋼板の冷間圧延鋼板で形成される。すなわち、車体側部構造10のサイドパネルアウタ14では、図2に示されているように、フロントピラーロア部31とサイドシル部33とを一体化した高強度の下部枠部(下部構造)41を有する。また、高張力鋼板で形成されるフロントピラーロア部31は、フロントピラーロア部31の下部から屈曲部32を介して車体後方に向けて延びたサイドシル部33と一体に形成されている。
サイドパネルアウタ14に、高張力鋼板で形成したフロントピラーロア部31と、普通鋼板で形成したフロントピラーアッパ部37aと、このフロントピラーアッパ部37aに沿って配置した補強部材38と、を備えた。すなわち、外観上、ドアやフロントガラスとの関係で鋭角の稜線183a~183c(図5参照)のプレス成形が要求されるフロントピラーアッパ部37aに、普通鋼板を用いることでフロントピラーアッパ部37aの成形を容易におこなうことができる。
アッパメンバ20が、後方へ向けて末広がり形状を呈し、末広がり形状の端部に、フロントピラーロア部31の前部54及び補強部材38の前端38aを接合するアッパメンバ接合部178が形成され、フロントピラーロア部31と補強部材38との接合部181に沿って車体前後方に延ばした延長線L1がアッパメンバ接合部178の略中央を通るようにしたので、フロントピラーアッパ部37aの補強部材38と高強度のフロントピラーロア部31へ前突荷重をほぼ均等に分散することができる。
また、本発明に係る車体側部構造190の補強構造191は、アッパメンバ20に一体的に形成される補強形状(ビード等)であってもよい。
なお、閉断面49の高さにて複数のルーフアーチが車体前後に配置されるものであってもよい。
センタピラー部35は、引張強度の異なる引張強度590~1180MPaの冷間圧延鋼板を部分的にプレス成形し、その後に接続するものであってもよい。
センタピラー部35は、センタピラーインナ25とともにセンタピラースチフナを内蔵しない閉断面99を形成している。
フロントピラーロア部31及びサイドシル部33をJAC980YL材の高張力鋼板(ハイテン材)により一体に形成した。これにより、車体剛性が向上するとともに、側突強度を向上する。
サイドパネルアウタ131は、図24に示されるように、サイドシルインナ133やセンタピラーインナ134などのサイドパネルインナ部材と閉断面をなすように接合される。
サイドシル部143及びフロントピラーロア部141は、屈曲部142を介して一体的に形成される。なお、フロントピラーロア部141、屈曲部142及びサイドシル部143は、後述するように、異なる材料が予め接合され、プレス成形されて下部枠部151が形成される。
別部品の樹脂製サイドシルガーニッシュ132により外観面を形成するため、サイドシル部143の外方への突出形状をなくすので、サイドシル部143と屈曲部142を含むフロントピラーロア部141との平坦化を容易に構成することができる。
サイドパネルアウタ131は、下部枠部151及び上部枠部152から形成されたサイドパネルアウタ枠部166に、センタピラー部145が接合されて形成される。
また、サイドシル部143に対してセンタピラー部145の下部145bを下方に指向させ、センタピラー部145の下部145bをサイドシルガーニッシュ132で覆う構造である。従って、矢印e1の如く侵入する雨水を効果的に防ぐことができる。
サイドパネルアウタ131のルーフレール部147及びリヤパネル部144を普通鋼板の上部枠部152とし、サイドパネルアウタ131のフロントピラーロア部141及びサイドシル部143を高張力鋼板の下部枠部151とし、それぞれの枠部151,152の両端を結合してサイドパネルアウタ枠部166を形成する。
車体側部構造10では、閉断面49に複数のルーフアーチを前後に接合するので、側突荷重を、閉断面を介し複数のルーフアーチへと分散させることができる。
また、補強部材は、ルーフレールインナと閉断面を形成するものの他、パイプ等の中空材でもよい。
サイドシル部33及びフロントピラーロア部31は、屈曲部32を介して一体的に形成される。すなわち、フロントピラーロア部31、屈曲部32及びサイドシル部33は、L字部材(下部枠部)41を構成する。
また、ダッシュボードロア23、アウトリガー24、サイドシルインナ21、フロントピラーインナ27(フロントピラーロアインナ22を含む)、ルーフレールインナ29、リヤピラーインナ26は、車体の側部に設けられるサイドパネルインナ(インナ側部材)19に相当する。
サイドシル部33及びフロントピラーロア部31が一体的に形成されるL字部材41は、SPC980等、高張力鋼板の冷間圧延鋼板で形成される。
また、サイドシル16は、サイドシルインナ21とサイドシル部33とで構成される。
Claims (17)
- 車体側部を外方から覆うサイドパネルアウタを備えた車体側部構造において、
前記サイドパネルアウタは、高張力鋼板で形成されたフロントピラーロア部と、普通鋼板で形成されたフロントピラーアッパ部と、このフロントピラーアッパ部に沿って配置した補強部材と、を備え、
前記フロントピラーロア部の上端は、前記フロントピラーアッパ部の下端へ結合され、
前記補強部材の前端は、前記フロントピラーロア部の上端の内側面へ結合されている、ことを特徴とする車体側部構造。 - 前記補強部材は、前端下部から略垂直に下方に延びた延出部を有しており、前記延出部は、前記フロントピラーロア部の上端に接合された、ことを特徴とする請求項1記載の車体側部構造。
- 前記車体側部構造は、前記フロントピラーロア部の前部及び前記補強部材の前端に接合された、車体前後方向に延びた閉断面形状のアッパメンバを更に備えており、
前記アッパメンバは、後方へ向けて上下方向の幅が徐々に大きくなる形状をしており、
前記フロントピラーロア部の前部及び前記補強部材の前端を接合するアッパメンバ接合部は、前記アッパメンバの最大幅の端部に形成され、
前記フロントピラーロア部と前記補強部材との接合部に沿って車体前後方に延びる延長線が前記アッパメンバ接合部の略中央を通る、ことを特徴とする請求項1に記載の車体側部構造。 - 高張力鋼板で形成された前記フロントピラーロア部は、該フロントピラーロア部の下部から屈曲部を介して車体後方に向けて延びたサイドシル部と一体に形成されている、ことを特徴とする請求項1に記載の車体側部構造。
- 前記フロントピラーロア部、前記屈曲部及び前記サイドシル部は、それぞれ側壁を有し、前記側壁は、凹凸のない平坦面で構成されている、ことを特徴とする請求項4記載の車体側部構造。
- 前記アッパメンバは、前記フロントピラーロア部へ向けて補強構造を有する、ことを特徴とする請求項3に記載の車体側部構造。
- 前記補強部材は、前記フロントピラーロア部の側壁及び前壁に接合されている、ことを特徴とする請求項1に記載の車体側部構造。
- 車体側部を外方から覆うサイドパネルアウタを備えた車体側部構造であって、
前記サイドパネルアウタのルーフレール部及びリヤパネル部を普通鋼板の上部枠部とし、前記サイドパネルアウタのフロントピラーロア部及びサイドシル部を高張力鋼板の下部枠部とし、それぞれの枠部の両端を結合してサイドパネルアウタ枠部を形成し、
前記フロントピラーロア部と前記サイドシル部との間に位置する屈曲部は、前記フロントピラーロア部から前記サイドシル部に亘り外面が平坦に形成され、前記サイドシル部を別体のサイドシルガーニッシュにより被覆し、該サイドシルガーニッシュの外面とフェンダパネルの外面とが連続している、ことを特徴とする車体側部構造。 - 前記サイドパネルアウタ枠部は、ホットスタンプ成形されたセンタピラー部を備えており、ドア開口は、前記センタピラー部の前後に形成されている、ことを特徴とする請求項8に記載の車体側部構造。
- 前記センタピラー部は、上端および下端を有し、前記上端は前記サイドパネルアウタ枠部の内側に取付けられ、前記下端は前記サイドパネルアウタ枠部の外側に取付けられる、ことを特徴とする請求項9に記載の車体側部構造。
- 前記サイドパネルアウタ枠部の前記ルーフレール部は、前記ルーフレール部内に設けられて該ルーフレール部を補強する補強部材を備えており、
前記センタピラー部の前記上端は、前記補強部材の外面に取り付けられ、
前記センタピラー部の前記下端は、前記サイドシル部の側面に取り付けられている、ことを特徴とする請求項10に記載の車体側部構造。 - 前記サイドパネルアウタ枠部は、前記上部枠部に第1の厚さの普通鋼板の第1のブランク材が用いられ、この第1のブランク材はプレス成形され、
前記下部枠部のフロントピラーロア部に第2の厚さの高張力鋼板の第2のブランク材が用いられ、前記下部枠部のサイドシル部に第3の厚さの高張力鋼板の第3のブランク材が用いられ、これらの第2及び第3のブランク材が接合されて複合ブランク材が形成され、この複合ブランク材がプレス成形される、ことを特徴とする請求項8に記載の車体側部構造。 - 車体側部に設けられるインナ側部材を外方からサイドパネルアウタで覆い、前記インナ側部材及びサイドパネルアウタで閉断面が形成される車体側部構造において、
前記サイドパネルアウタは、車体前後方向に延びたサイドシル部と、前記サイドシル部に屈曲部を介して一体的に形成され、車体の高さ方向に延びたフロントピラーロア部と、前記フロントピラーロア部、サイドシル部及び屈曲部に連続的に形成され、前記インナ側部材に接合される内フランジ及び外フランジと、前記屈曲部に且つ前記閉断面内に配置される略矩形状の補強部材と、を備え、
前記補強部材は、略矩形状の一つのコーナ部に形成され前記内フランジに接合される内接合部と、前記一つのコーナ部に対向する他のコーナ部及び該他のコーナ部を挟む二つの辺に形成され、前記外フランジに接合される外接合部と、を備え、
前記内フランジへ接合される前記内接合部を中心として前記外フランジへ接合される前記外接合部が略放射状に形成されていることを特徴とする車体側部構造。 - 前記補強部材は、前記外接合部を、前記内接合部よりも車幅内方にオフセットさせるとともに、前記サイドパネルアウタ側に向けて突出させ、前記内接合部から前記外接合部の略放射状に向かう中央に形成された稜線を有し、
前記稜線を跨いで補強ビードが形成されていることを特徴とする請求項13に記載の車体側部構造。 - 前記補強部材は、車体を持ち上げるときにジャッキを当てるジャッキアップベースであることを特徴とする請求項13に記載の車体側部構造。
- 前記補強部材は、前記屈曲部を補強する断面変化部を有することを特徴とする請求項13に記載の車体側部構造。
- 前記外接合部は、前記屈曲部の垂直部、曲がり部及び水平部に亘り形成されるとともに、前記内接合部は、前記曲がり部の円弧の中央部分にのみに形成されることを特徴とする請求項13に記載の車体側部構造。
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EP10848499.9A EP2535242B1 (en) | 2010-03-23 | 2010-12-24 | Structure for side section of vehicle body |
JP2012506780A JP5422734B2 (ja) | 2010-03-23 | 2010-12-24 | 車体側部構造 |
CN201080062502.7A CN102741110B (zh) | 2010-03-23 | 2010-12-24 | 车身侧部构造 |
US13/576,231 US8740290B2 (en) | 2010-03-23 | 2010-12-24 | Structure for side section of vehicle body |
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JP2010-083545 | 2010-03-31 | ||
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EP (1) | EP2535242B1 (ja) |
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JP2022531463A (ja) * | 2019-05-07 | 2022-07-06 | アルセロールミタル | 自動車用サイドシル部品 |
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Also Published As
Publication number | Publication date |
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CN102741110B (zh) | 2015-04-08 |
CN102741110A (zh) | 2012-10-17 |
EP2535242B1 (en) | 2014-09-17 |
JPWO2011118107A1 (ja) | 2013-07-04 |
EP2535242A4 (en) | 2013-10-30 |
JP5422734B2 (ja) | 2014-02-19 |
US8740290B2 (en) | 2014-06-03 |
US20120299334A1 (en) | 2012-11-29 |
EP2535242A1 (en) | 2012-12-19 |
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