WO2016031337A1 - 自動車車体および自動車車体の製造方法 - Google Patents
自動車車体および自動車車体の製造方法 Download PDFInfo
- Publication number
- WO2016031337A1 WO2016031337A1 PCT/JP2015/066322 JP2015066322W WO2016031337A1 WO 2016031337 A1 WO2016031337 A1 WO 2016031337A1 JP 2015066322 W JP2015066322 W JP 2015066322W WO 2016031337 A1 WO2016031337 A1 WO 2016031337A1
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- WIPO (PCT)
- Prior art keywords
- width direction
- wall
- joint
- vehicle width
- vehicle body
- 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
- B62D25/04—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
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts
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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
- B62D25/06—Fixed roofs
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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
- B62D25/08—Front or rear portions
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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
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/026—Connections by glue bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/06—Connections between superstructure or understructure sub-units readily releasable
- B62D27/065—Connections between superstructure or understructure sub-units readily releasable using screwthread
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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
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
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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
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
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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
- B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
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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
- B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
- B62D29/043—Superstructures
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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
- B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
- B62D29/048—Connections therefor, e.g. joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
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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
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0208—Alloys
Definitions
- a lower skeleton formed in a bathtub shape with CFRP includes a vehicle body floor, a front wall rising from a front end of the vehicle body floor, a rear wall rising from a rear end of the vehicle body floor, and a vehicle on the vehicle floor.
- a pair of side members connected to the upper surface of both sides in the width direction, and the upper skeleton connected to the lower skeleton is formed in an inverted U shape with CFRP, and the lower end is metal on the upper surface of the side member
- the present invention relates to an automobile body including a roll bar coupled through a joint, and a method for manufacturing the automobile body.
- One side of the connecting member formed in an L shape with a metal material such as aluminum is fixed to the upper surface of the rocker (side sill) at the outer end in the vehicle width direction of the FRP floor with a bolt, and the other side is fixed to the center pillar made of FRP. It is fitted inside and fixed with bolts, and the other side of the connecting member and the lower surface of the rocker are connected with a tension member made of an elastic member such as rubber, and between the tension member and the outer end of the rocker in the vehicle width direction.
- An automobile body sandwiching an energy absorbing member is known from Patent Document 1 below.
- the tension member made of an elastic member hardly contributes to the coupling strength between the rocker and the center pillar, and the rocker and the center pillar are connected only by a substantially L-shaped connecting member. Therefore, there is a problem that the strength of the connecting portion is insufficient. Moreover, when attaching / detaching the center pillar to / from the rocker, it is necessary to attach / detach both the connecting member and the tension member, so that there is a problem that workability is lowered. Furthermore, since the rocker and the floor are integrally formed, even if the rocker has a larger cross section than the floor and the vehicle body strength is to be increased, the continuous fiber of FRP is easily bent and broken between the floor and the rocker.
- the present invention has been made in view of the above-mentioned circumstances, and among the CFRP lower skeleton, the floor and the side member (rocker) are configured as separate members, and while improving the productivity while preventing the continuous fibers from being bent,
- the upper skeleton and the lower skeleton can be separated to improve the assembling of the rigging parts and the like, and the lower end of the CFRP roll bar is firmly and easily attached to the upper surface of the side member via a metal joint.
- a lower skeleton formed in a bathtub shape by CFRP includes a vehicle body floor, a front wall rising from a front end of the vehicle body floor, and a rear wall standing from a rear end of the vehicle body floor. And a pair of side members connected to the upper surfaces of both sides in the vehicle width direction of the vehicle body floor, and the upper skeleton connected to the lower skeleton is formed in an inverted U shape by CFRP.
- An automobile body including a roll bar having a lower end coupled to an upper surface of the side member via a metal joint, the metal joint being fixed to the side member and supporting the lower end of the roll bar And a lower joint fixed to the vehicle body floor, and the upper joint includes an upper wall, an inner wall in the vehicle width direction, and an upper wall that respectively fit to an upper surface, an inner surface, and an outer surface of the side member.
- An outer wall in the width direction, and the lower joint includes a lower wall and an outer wall in the vehicle width direction that are respectively joined to a lower surface and an outer surface of the vehicle body floor, and the outer wall in the vehicle width direction of the upper joint and the vehicle in the lower joint
- a vehicle body having a first feature is characterized in that the outer wall in the width direction is fastened with a first bolt and the inner wall in the vehicle width direction of the upper joint is fastened to the inner surface of the side member with a second bolt.
- the upper joint is further divided into the inside and outside in the vehicle width direction, and the second joint is supported so as to sandwich the lower end of the roll bar from inside and outside in the vehicle width direction.
- a featured car body is proposed.
- an automobile body having a third feature that the metal joint is made of a casting and includes a reinforcing rib extending in the vertical direction. .
- the roll bar includes an inner CFRP laminated plate constituting an inner surface and a lower surface in the vehicle width direction, and an outer surface and an upper surface in the vehicle width direction.
- a vehicle body having a fourth feature is proposed in which the outer CFRP laminated plate to be formed is connected by a plurality of metal plates to form a hollow closed cross section.
- an energy absorbing member is provided above the metal joint on the outer surface in the vehicle width direction of the roll bar.
- a car body is proposed.
- the vehicle body floor, the front wall, and the rear wall have a sandwich structure in which a core is sandwiched between an outer skin and an inner skin.
- the side member connected to the vehicle body floor, the front wall, and the rear wall is integrally formed with a side sill, a front pillar lower, and a rear pillar, and is formed in a U shape in a side view.
- the pair of left and right bent side portions of the roll bar bent in an inverted U shape has a longitudinal direction of a pair of left and right roof side rails made of an aluminum alloy hollow member.
- the upper frame is configured by connecting the intermediate portions, bolting the front end of the roof side rail to the upper end of the front pillar lower, and bolting the rear end of the roof side rail to the upper end of the rear pillar.
- the roll bar is fitted into a recess formed in the roof side rail, and the fixing member fixed to the roof side rail is interposed between the recess and the recess.
- An automobile body having an eighth feature of sandwiching the roll bar is proposed. .
- a front metal joint provided at a front end of the roof side rail is fastened to an upper end of the front pillar lower by a front bolt and a rear bolt
- a vehicle body according to a ninth feature is proposed in which a distance between the front bolt and the rear bolt is larger than a front-rear width of an upper end of the front pillar lower.
- a rear metal joint provided at a rear end of the roof side rail is fastened to an upper end of the rear pillar by a front bolt and a rear bolt
- a vehicle body according to a tenth feature is proposed in which the distance between the front bolt and the rear bolt is larger than the width in the front-rear direction of the upper end of the rear pillar.
- a step of bonding the side member to the vehicle body floor, the front wall and the rear wall; a step of removing the bolt connection to separate the upper skeleton and the lower skeleton; and the separated upper skeleton and the lower portion An automobile body manufacturing method according to an eleventh feature is proposed, which includes a step of assembling parts to the skeleton, and a step of rejoining the upper skeleton and the lower skeleton after the parts have been assembled by the bolt connection. .
- the dash panel lower 17 of the embodiment corresponds to the front wall of the present invention
- the rear partition 18 of the embodiment corresponds to the rear wall of the present invention
- the upper outer joint 51 of the embodiment corresponds to the upper wall of the present invention.
- the lower vehicle width direction outer wall 51c of the embodiment corresponds to the vehicle width direction outer wall of the present invention
- the upper inner joint 52 of the embodiment corresponds to the upper joint of the present invention.
- the vehicle width direction inner wall 52c corresponds to the vehicle width direction inner wall of the present invention.
- the metal joint for connecting the lower end of the upper skeleton roll bar formed in an inverted U shape with CFRP to the upper surface of the side member of the lower skeleton made of CFRP is It is divided into an upper joint that is fixed to the member and supports the lower end of the roll bar, and a lower joint that is fixed to the vehicle body floor.
- the upper joint includes an upper wall, an inner wall in the vehicle width direction, and an outer wall in the vehicle width direction that are respectively fitted to the upper surface, inner surface, and outer surface of the side member, and the lower joint is joined to the lower surface and outer surface of the vehicle body floor, respectively.
- the lower wall and the outer wall in the vehicle width direction are provided, so that the outer wall in the vehicle width direction of the upper joint and the outer wall in the vehicle width direction of the lower joint are fastened with the first bolts, and the inner wall in the vehicle width direction of the upper joint is By fastening to the side surface with the second bolt, not only can the roll bar be firmly coupled to the vehicle body floor and the side member, but the roll bar can be easily attached to and detached from the side member.
- the body floor and the side member be formed separately to obtain a high-strength CFRP vehicle body structure in which the side member has a large cross-section, but also the side portion can be secured by fastening the upper joint and the lower joint. Positioning between the member and the vehicle body floor is facilitated, and the work space for attaching the outfitting parts to the upper skeleton and the lower skeleton can be secured by releasing the fastening between the upper joint and the lower joint, thereby increasing the productivity.
- the upper joint is further divided into the vehicle width direction inside and outside and supports the lower end of the roll bar so as to be sandwiched from the inside and outside of the vehicle width direction. Even if there is a variation in thickness, the variation can be absorbed by adjusting the interval between the divided upper joints.
- the metal joint is made of a casting and includes reinforcing ribs extending in the vertical direction, so that the strength of the metal joint can be increased.
- the roll bar includes a plurality of metal plates, the inner CFRP laminate constituting the vehicle width direction inner surface and the lower surface, and the outer CFRP laminate constituting the vehicle width direction outer surface and the upper surface. Are connected to each other to form a hollow closed cross section, so that when the impact load of side collision is input, the carbon fibers of the inner CFRP laminate and the outer CFRP laminate support the tensile load and the compressive load, respectively, and the roll bar is bent. While increasing rigidity, the metal plate can be ductile and plastically deformed to absorb collision energy.
- the energy absorbing member is provided above the metal joint on the outer surface in the vehicle width direction of the roll bar, so that the energy absorbing member is crushed when a collision load of side collision is input.
- the collision energy can be absorbed early.
- the vehicle body floor, the front wall, and the rear wall have a sandwich structure in which a core is sandwiched between the outer skin and the inner skin, and are connected to the vehicle body floor, the front wall, and the rear wall.
- the side member is integrated with a side sill, front pillar lower, and rear pillar, and is formed in a U-shape in side view, ensuring the maximum length of CFRP carbon continuous fiber and a lightweight, high-strength lower part. A skeleton can be obtained.
- the pair of left and right roof side rails made of an aluminum alloy hollow member is connected to the pair of left and right bent portions of the roll bar bent in an inverted U shape.
- the upper skeleton is constructed by bolting the front end of the roof side rail to the upper end of the front pillar lower, and bolting the rear end of the roof side rail to the upper end of the rear pillar.
- the skeleton can be easily attached to and detached from the lower skeleton, thereby improving productivity.
- the roll bar is fitted into the recess formed in the roof side rail, and the roll bar is sandwiched between the fixing member fixed to the roof side rail and the recess.
- the rigidity of the upper skeleton can be increased by bringing the axis of the bar close to the axis of the roof side rail.
- the front metal joint provided at the front end of the roof side rail is fastened to the upper end of the front pillar lower by the front bolt and the rear bolt, and the distance between the front bolt and the rear bolt is Is larger than the front-rear width of the upper end of the front pillar lower, so that the bending moment applied to the roof side rail can be firmly supported by the front metal joint, and the bending rigidity of the roof side rail can be increased.
- the rear metal joint provided at the rear end of the roof side rail is fastened to the upper end of the rear pillar by the front bolt and the rear bolt, and the distance between the front bolt and the rear bolt is the rear pillar. Since the bending moment applied to the roof side rail is firmly supported by the rear metal joint, the bending rigidity of the roof side rail can be increased.
- the upper skeleton and the side member are bolted to form a subcomponent, the side member is bonded to the vehicle body floor, the front wall and the rear wall, and the bolt coupling is removed.
- the upper skeleton and lower skeleton are separated, the parts are assembled to the separated upper skeleton and lower skeleton, and the upper skeleton and lower skeleton that have been assembled are re-coupled by bolting.
- the skeleton does not get in the way, and when the parts are attached to the lower skeleton, the upper skeleton does not get in the way so that productivity is improved and the upper and lower skeletons can be easily connected and separated by bolt connection. it can.
- FIG. 1 is a perspective view of an automobile body viewed obliquely from the front.
- FIG. 2 is a view in the direction of the arrow 2 in FIG.
- FIG. 3 is an enlarged view of part 3 of FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.
- FIG. 5 is a view taken in the direction of arrow 5 in FIG. 6 is an enlarged view of a portion 6 in FIG. 7 is a cross-sectional view taken along line 7A-7A and line 7B-7B in FIG.
- FIG. 8 is an enlarged view of part 8 of FIG. 9 is a cross-sectional view taken along line 9A-9A and 9B-9B in FIG.
- FIG. 10 is an explanatory view of the assembly process of the automobile body.
- the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are defined with reference to an occupant seated in the driver's seat.
- a vehicle body frame mainly made of CFRP CFRP (carbon fiber reinforced resin) has a vehicle body floor 11 and left and right sides extending in the front-rear direction along the left and right side portions of the vehicle body floor 11.
- a pair of left and right rods made of aluminum alloy pipe material extending to the upper ends of the left and right rear pillars 14 and 14 via the upper ends of 15 And a full side rails 16, 16.
- the left and right roof side rails 16, 16 are connected by a front roof arch 28 and a middle roof arch 29.
- the upper ends of the left and right center pillars 15 and 15 and both ends of the middle roof arch 29 in the vehicle width direction are continuously integrated to form an inverted U-shaped roll bar 34 in a front view.
- the roof side rail 16 is divided into a front member 16a and a rear member 16b with a roll bar 34 as a boundary, and a front half of the front member 16a constitutes a front pillar upper.
- the left and right roof side rails 16, 16, the roll bar 34, and the front roof arch 28 that are integrated constitute an upper skeleton 73.
- a flat dash panel lower 17 is joined to the front end of the vehicle body floor 11 and the front surfaces of the left and right front pillar lowers 13, 13, and a flat plate rear portion is connected to the rear end of the vehicle body floor 11 and the rear surfaces of the left and right rear pillars 14, 14.
- the partition wall 18 is joined, and the rear pershell 19 extends horizontally from the rear end of the rear partition wall 18.
- the integrated vehicle body floor 11, dash panel lower 17, rear partition 18, and left and right side members 27, 27 constitute a lower skeleton 74.
- a pair of left and right aluminum alloy casting mounts 20 and 20 are fixed to the front end of the vehicle body floor 11, and the rear ends of the pair of left and right aluminum alloy casting front side frames 21 and 21 are fixed to the front ends of the mounting bases 20 and 20, respectively. Is fixed.
- a pair of left and right rear side frames 22, 22 extend rearward from the rear end of the lower wall of the vehicle body floor 11, and the rear pillars 14, 14 and the rear side frames 22, 22 are joined by a pair of left and right rear wheel house inners 23, 23. .
- the vehicle body floor 11 is composed of an inverted U-shaped floor tunnel portion 11 a extending in the front-rear direction in the vehicle width direction center portion, and a pair of left and right continuations on both sides of the floor tunnel portion 11 a in the vehicle width direction.
- Floor portions 11b and 11b are composed of The floor portion 11b including the floor portion lower wall 25a of the outer skin 25 and the floor portion upper wall 26a of the inner skin 26 is thicker in the vertical direction at both ends in the vehicle width direction than the center portion in the vehicle width direction.
- a pair of upper and lower energy absorbing members 30, 30 are arranged in the thickened portion.
- the energy absorbing members 30 and 30 are made of a corrugated member made of PA (polyamide) or nylon excellent in shock absorbing performance.
- a support wall 31 is fixed to the inside of the energy absorbing members 30 and 30 in the vehicle width direction by adhesion, and the energy absorbing members 30 and 30 are fitted into fitting grooves 31a formed on the outer surface of the support wall 31 in the vehicle width direction. Are joined by bonding.
- the upper surfaces of the energy absorbing members 30 and 30 are bonded to the lower surface of the inner skin 26 by bonding, and the lower surfaces of the energy absorbing members 30 and 30 are bonded to the upper surface of the outer skin 25 by bonding.
- a load distribution frame 32 made of CFRP (or made of aluminum alloy) extending in the front-rear direction is disposed on the inner side in the vehicle width direction of the support wall 31 and at the portion where the thickness of the floor portion 11b changes.
- the upper surface and the lower surface of the load distribution frame 32 are bonded to the lower surface of the inner skin 26 and the upper surface of the outer skin 25, respectively, and the outer surface in the vehicle width direction is bonded to the inner surface in the vehicle width direction of the support wall 31.
- a corrugated core 33 is disposed inside the floor portion 11b on the inner side in the vehicle width direction of the load distribution frame 32, and the upper surface and the lower surface thereof are bonded to the lower surface of the inner skin 26 and the upper surface of the outer skin 25, respectively.
- the side member 27 including the side sill 12, the front pillar lower 13, and the rear pillar 14 includes an outer surface 46, an upper surface 47, a lower surface 48, and an inner side surface 49.
- a plurality of partition plates 36 are arranged at predetermined intervals in the front-rear direction.
- the lower surface 48 of the side sill 12 is placed on the upper surface of the inner skin 26 and bonded thereto by bonding at the outer end in the vehicle width direction of the vehicle body floor 11, that is, at the upper part of the energy absorbing members 30 and 30.
- the lower end of the roll bar 34 (the lower end of the center pillar 15) is disposed at the intermediate portion in the front-rear direction of the side sill 12 of the side member 27 via a metal joint 50 made of cast aluminum alloy. Is supported.
- the metal joint 50 includes an upper outer joint 51, an upper inner joint 52 and a lower joint 53.
- the upper outer joint 51 includes an upper vehicle width direction outer wall 51a that contacts the outer surface of the center pillar 15 in the vehicle width direction, an upper wall 51b that is connected to the lower end of the upper vehicle width direction outer wall 51a and contacts the upper surface 47 of the side sill 12.
- a lower vehicle width direction outer wall 51c connected to the outer end of the upper wall 51b in the vehicle width direction and abutting against the outer surface 46 of the side sill 12, a flange portion 51d extending outward in the vehicle width direction from the lower end of the lower vehicle width direction outer wall 51c;
- a plurality of reinforcing ribs 51e which connect the upper vehicle width direction outer wall 51a, the upper wall 51b, and the lower vehicle width direction outer wall 51c.
- the upper inner joint 52 is connected to the upper vehicle width direction inner wall 52a that contacts the inner surface of the center pillar 15 in the vehicle width direction and the lower end of the upper vehicle width direction inner wall 52a and contacts the upper surface of the upper wall 51b of the upper outer joint 51.
- An upper wall 52b and a lower vehicle width direction inner wall 52c connected to the lower end of the upper vehicle width direction inner wall 52a and contacting the inner side surface 49 of the side sill 12 are provided.
- the lower joint 53 includes a lower wall 53a that contacts the lower surface of the floor portion 11b, a vehicle width direction outer wall 53b that extends upward from the vehicle width direction outer end of the lower wall 53a, and a vehicle width direction outer side from the upper end of the vehicle width direction outer wall 53b. And a plurality of reinforcing ribs 53d connecting the outer wall 53b in the vehicle width direction and the flange portion 53c.
- the upper outer joint 51 and the upper inner joint 52 bond the upper walls 51b, 52b to each other, and bond the upper vehicle width direction outer wall 51a of the upper outer joint 51 to the vehicle width direction outer surface of the center pillar 15,
- the inner wall 52a in the upper vehicle width direction of the joint 52 is bonded to the inner surface in the vehicle width direction of the center pillar 15 so as to be integrally fixed to the center pillar 15.
- the lower joint 53 is integrally fixed to the floor portion 11b by bonding the lower wall 53a and the vehicle width direction outer wall 53b to the lower surface of the floor portion 11b and the vehicle width direction outer surface, respectively.
- the flange portion 51d of the upper outer joint 51 and the flange portion 53c of the lower joint 53 are fastened together by the first bolts 54 and nuts 55, and the lower vehicle width direction inner wall 52c of the upper inner joint 52 is connected to the second bolt.
- 56 and nuts 57 are fastened to the inner surface 49 of the side sill 12 so that the lower end of the center pillar 15 is detachably coupled to the side sill 12.
- the roll bar 34 connects the inner CFRP laminate 58 constituting the inner and lower surfaces in the vehicle width direction, the outer CFRP laminate 59 constituting the outer and upper surfaces in the vehicle width direction, and the inner and outer CFRP laminates 58 and 59.
- four metal plates 60 made of an aluminum alloy.
- the metal plate 60 includes joint flanges 60b and 60b formed by bending both ends in the vehicle width direction of the main body 60a orthogonal to the inner and outer CFRP laminated plates 58 and 59, and the joint flanges 60b of the four metal plates 60.
- a bead 60c extending in the vertical direction is formed on the main body 60a of the metal plate 60.
- the energy absorbing member 61 formed of an aluminum alloy in a honeycomb shape is bonded to the outer surface in the vehicle width direction at the lower part of the center pillar 15 of the roll bar 34.
- the axis of the honeycomb of the energy absorbing member 61 faces the vehicle width direction, and the energy absorbing member 61 is crushed by the collision load of the side collision and absorbs the collision energy.
- a rectangular recess 16c is formed on the inner surface in the vehicle width direction of the rear end portion of the front member 16a of the roof side rail 16, and the roll bar 34 fitted into the recess 16c It is sandwiched and fixed between fixing members 37 fastened to the member 16a by bolts 35.
- the axial line of the roll bar 34 and the axial line of the roof side rail 16 can be brought close to each other to increase the coupling strength between them.
- a front metal joint 62 made of an aluminum alloy casting is welded to the front end of the front member 16a of the roof side rail 16, and the front metal joint 62 is connected to the dash panel lower. 17, which is fastened by a front bolt 65 to an aluminum alloy casting metal joint 64 provided on the upper surface of the upper member 63 extending forward from the front surface of the upper member 63 and is fixed to the upper surface 47 of the front pillar lower 13.
- a front bolt 65 to an aluminum alloy casting metal joint 64 provided on the upper surface of the upper member 63 extending forward from the front surface of the upper member 63 and is fixed to the upper surface 47 of the front pillar lower 13.
- rear bolts 67, 67 are fastened to the metal joint 66 by rear bolts 67, 67.
- the distance L2 between the front and rear bolts 65 and 67 for fastening the front metal joint 62 to the front and rear width L1 of the upper end of the front pillar lower 13 is set to be large. It arrange
- a rear metal joint 68 made of an aluminum alloy casting is welded to the rear end of the rear member 16 b of the roof side rail 16, and the rear metal joint 68 is connected to the upper end of the rear pillar 14. Fastened to the upper wall of the rear extension 14 a by a front bolt 69, a rear bolt 70, and nuts 71 and 72.
- the front-rear distance L4 between the front and rear bolts 69, 70 that fasten the rear metal joint 68 is set larger than the front-rear width L3 of the upper end of the rear pillar 14.
- 50 is divided into an upper outer joint 51 and an upper inner joint 52 that are fixed to the side sill 12 and support the lower end of the roll bar 34, and a lower joint 53 that is fixed to the vehicle body floor 11.
- the upper outer joint 51 and the upper inner joint 52 are in contact with the outer surface 46, the upper surface 47 and the inner surface 49 of the side sill 12 from above, and the lower joint 53 is in contact with the lower surface of the vehicle body floor 11 and the outer surface in the vehicle width direction.
- the flange 51d of the lower vehicle width direction outer wall 51c of the outer joint 51 and the flange portion 53c of the vehicle width direction outer wall 53b of the lower joint 53 are fastened by the first bolts 54, and the inner wall of the upper inner joint 52 in the lower vehicle width direction. 52c is fastened to the inner surface 49 of the side sill 12 with the second bolts 56, so that the roll bar 34 can be firmly coupled to the side sill 12, and the roll bar 34 can be easily attached to and detached from the side sill 12. Can do. .
- the upper outer joint 51 and the upper inner joint 52 are divided inward and outward in the vehicle width direction and supported so as to sandwich the lower end of the roll bar 34 from inside and outside in the vehicle width direction. Even if there is a variation, the variation can be absorbed by adjusting the distance between the divided upper outer joint 51 and upper inner joint 52 in the vehicle width direction.
- the upper outer joint 51, the upper inner joint 52, and the lower joint 53 are made of an aluminum alloy casting, and the upper outer joint 51 and the lower joint 53 are provided with reinforcing ribs 51e, 53d, etc. extending in the vertical direction. The strength of the joint 50 can be increased.
- the bending strength of the center pillar 15 can be further increased by joining both the CFRP laminated plates 58 and 59 of the center pillar 15 with the metal plates 60 that are strong against out-of-plane deformation. It is possible to achieve both weight reduction and strength.
- the cross section of the center pillar 15 is a rectangular shape that is long in the front-rear direction, and the four metal plates 60 are juxtaposed in the front-rear direction, so that The size can be reduced to prevent deformation, and the number of metal plates 60 can be increased to further increase the strength of the center pillar 15.
- the metal plate 60 has a U-shaped cross section having a pair of joining flanges 60b and 60b joined to both CFRP laminated plates 58 and 59 at the inner and outer ends in the vehicle width direction.
- the two CFRP laminated plates 58 and 59 and the metal plate 60 can be firmly joined.
- the metal plate 60 is equipped with the bead 60c extended in an up-down direction, the out-of-plane deformation
- the energy absorbing member 61 is provided at the upper position of the metal joint 50 on the outer surface in the vehicle width direction of the roll bar 34, the energy absorbing member 61 is crushed and absorbs the collision energy at an early stage when the collision load of the side collision is input. be able to.
- the vehicle body floor 11, the dash panel lower 17 and the rear partition 18 have a sandwich structure in which the core 33 is sandwiched between the outer skin 25 and the inner skin 26 (see FIG. 4).
- the vehicle body floor 11, the dash panel lower 17 and the rear partition Since the side member 27 connected to 18 is integrally formed with the side sill 12, the front pillar lower 13 and the rear pillar 14 and formed in a U shape in a side view (see FIGS. 1 and 2), the carbon continuous CFRP is provided.
- a lightweight and high-strength lower skeleton 74 can be obtained by maximizing the fiber length.
- the upper skeleton 73 in which the roll bar 34 and the pair of left and right roof side rails 16 and 16 are integrated is detachably fastened to the side sill 12 at the lower end of the roll bar 34 by first bolts 54 and second bolts 56 ( 4), the front end of the roof side rail 16 is detachably fastened to the upper end of the front pillar lower 13 by a front bolt 65 and a rear bolt 67 (see FIG. 6), and the rear end of the roof side rail 16 is the rear pillar 14. Since the front bolt 69 and the rear bolt 70 are detachably fastened to the upper end (see FIG. 8), the upper skeleton 73 can be easily attached to and detached from the lower skeleton 74, and productivity is improved (FIG. 10 ( D)).
- the distance L2 between the front bolt 65 and the rear bolt 67 is the front. Since it is larger than the longitudinal width L1 of the upper end of the pillar lower 13 (see FIG. 6), the bending moment applied to the roof side rail 16 is firmly supported by the front metal joint 62, and the bending rigidity of the roof side rail 16 is increased. Can do.
- the distance L4 between the front bolt 69 and the rear bolt 70 is the rear pillar. 14
- the bending moment applied to the roof side rail 16 is firmly supported by the rear metal joint 68, and the bending rigidity of the roof side rail 16 can be increased.
- a pair of left and right roof side rails 16 and 16, a roll bar 34 and a front roof arch 28 are integrally joined to assemble an upper skeleton 73, and a pair of left and right side members 27 and 27 are joined to the upper skeleton 73 to form subcomponents. 75 is assembled (see FIG. 10A).
- the upper frame 73 includes front metal joints 62 and 62 at the front ends of the roof side rails 16 and 16, metal joints 50 and 50 at the left and right lower ends of the roll bar 34, and rear metal joints 68 at the rear ends of the roof side rails 16 and 16.
- the side members 27 and 27 are bolted together.
- the skeleton 74 includes a vehicle body floor 11, a dash panel lower 17, a rear partition 18, and side members 27 and 27.
- the fastening of the upper outer joint 51 and the upper inner joint 52 and the lower joint 53 facilitates the positioning of the side members 27 and 27 and the vehicle body floor 11.
- the lower skeleton 74 does not get in the way when the parts are assembled to the upper skeleton 73, and the upper skeleton is attached when the parts are attached to the lower skeleton 74. Since 73 does not get in the way, not only the productivity is improved, but also the upper skeleton 73 and the lower skeleton 74 can be easily connected and separated by bolt connection.
- the upper joint is divided into the upper outer joint 51 and the upper inner joint 52 in the embodiment, they can be integrated.
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Abstract
Description
12 サイドシル
13 フロントピラーロア
14 リヤピラー
16 ルーフサイドレール
16c 凹部
17 ダッシュパネルロア(前壁)
18 後部隔壁(後壁)
25 アウタースキン
26 インナースキン
27 側部部材
33 コア
34 ロールバー
37 固定部材
46 外側面
47 上面
49 内側面
50 金属ジョイント
51 上部外側ジョイント(上部ジョイント)
51b 上壁
51c 下部車幅方向外壁(車幅方向外壁)
51e 補強リブ
52 上部内側ジョイント(上部ジョイント)
52b 上壁
52c 下部車幅方向内壁(車幅方向内壁)
53 下部ジョイント
53a 下壁
53b 車幅方向外壁
53d 補強リブ
54 第1ボルト
56 第2ボルト
58 内側CFRP積層板
59 外側CFRP積層板
60 金属板
61 エネルギー吸収部材
62 前部金属ジョイント
65 前部ボルト
67 後部ボルト
68 後部金属ジョイント
69 前部ボルト
70 後部ボルト
73 上部骨格
74 下部骨格
75 サブコンポーネント
Claims (11)
- CFRPでバスタブ状に形成された下部骨格(74)は、車体フロア(11)と、前記車体フロア(11)の前端から起立する前壁(17)と、前記車体フロア(11)の後端から起立する後壁(18)と、前記車体フロア(11)の車幅方向両側部の上面に接続された一対の側部部材(27)とを備え、前記下部骨格(74)に接続される上部骨格(73)は、CFRPで逆U字状に形成されて下端が前記側部部材(27)の上面に金属ジョイント(50)を介して結合されるロールバー(34)を備える自動車車体であって、
前記金属ジョイント(50)は、前記側部部材(27)に固定されて前記ロールバー(34)の下端を支持する上部ジョイント(51,52)と、前記車体フロア(11)に固定される下部ジョイント(53)とに分割され、
前記上部ジョイント(51,52)は、前記側部部材(27)の上面(47)、内側面(49)および外側面(46)にそれぞれ嵌合する上壁(51b,52b)、車幅方向内壁(52c)および車幅方向外壁(51c)を備え、前記下部ジョイント(53)は、前記車体フロア(11)の下面および車幅方向外面にそれぞれ接合される下壁(53a)および車幅方向外壁(53b)を備え、前記上部ジョイント(51,52)の前記車幅方向外壁(51c)と前記下部ジョイント(53)の前記車幅方向外壁(53b)とを第1ボルト(54)で締結するとともに、前記上部ジョイント(51,52)の前記車幅方向内壁(52c)を前記側部部材(27)の前記内側面(49)に第2ボルト(56)で締結することを特徴とする自動車車体。 - 前記上部ジョイント(51,52)は更に車幅方向内外に分割され、前記ロールバー(34)の下端を車幅方向内外から挟むように支持することを特徴とする、請求項1に記載の自動車車体。
- 前記金属ジョイント(50)は鋳物製であって上下方向に延びる補強リブ(51e,53d)を備えることを特徴とする、請求項1または請求項2に記載の自動車車体。
- 前記ロールバー(34)は、車幅方向内面および下面を構成する内側CFRP積層板(58)と、車幅方向外面および上面を構成する外側CFRP積層板(59)とを複数の金属板(60)で接続して中空閉断面に構成されることを特徴とする、請求項1~請求項3の何れか1項に記載の自動車車体。
- 前記ロールバー(34)の車幅方向外面における前記金属ジョイント(50)の上方位置にエネルギー吸収部材(61)を備えることを特徴とする、請求項1~請求項4の何れか1項に記載の自動車車体。
- 前記車体フロア(11)、前記前壁(17)および前記後壁(18)は、アウタースキン(25)およびインナースキン(26)間にコア(33)を挟んだサンドイッチ構造であり、前記車体フロア(11)、前記前壁(17)および前記後壁(18)に接続される前記側部部材(27)は、サイドシル(12)、フロントピラーロア(13)およびリヤピラー(14)を一体に備えて側面視でU字状に形成されることを特徴とする、請求項1~請求項5の何れか1項に記載の自動車車体。
- 逆U字状に屈曲する前記ロールバー(34)の左右一対の屈曲部に、アルミニウム合金の中空部材よりなる左右一対のルーフサイドレール(16)の前後方向中間部をそれぞれ接続し、前記ルーフサイドレール(16)の前端を前記フロントピラーロア(13)の上端にボルト結合し、前記ルーフサイドレール(16)の後端を前記リヤピラー(14)の上端にボルト結合することで前記上部骨格(73)を構成したことを特徴とする、請求項6に記載の自動車車体。
- 前記ルーフサイドレール(16)に形成した凹部(16c)に前記ロールバー(34)を嵌合し、前記ルーフサイドレール(16)に固定される固定部材(37)と前記凹部(16c)との間に前記ロールバー(34)を挟持したことを特徴とする、請求項7に記載の自動車車体。
- 前記ルーフサイドレール(16)の前端に設けた前部金属ジョイント(62)は前記フロントピラーロア(13)の上端に前部ボルト(65)および後部ボルト(67)で締結され、前記前部ボルト(65)および前記後部ボルト(67)間の距離は前記フロントピラーロア(13)の上端の前後方向幅よりも大きいことを特徴とする、請求項7または請求項8に記載の自動車車体。
- 前記ルーフサイドレール(16)の後端に設けた後部金属ジョイント(68)は前記リヤピラー(14)の上端に前部ボルト(69)および後部ボルト(70)で締結され、前記前部ボルト(69)および前記後部ボルト(70)間の距離は前記リヤピラー(14)の上端の前後方向幅よりも大きいことを特徴とする、請求項7または請求項8に記載の自動車車体。
- 請求項1~請求項10の何れか1項に記載の自動車車体の製造方法であって、
前記上部骨格(73)および前記側部部材(27)をボルト結合してサブコンポーネント(75)を構成する工程と、前記サブコンポーネント(75)の前記側部部材(27)を前記車体フロア(11)に接着する工程と、前記ボルト結合を外して前記上部骨格(73)を分離する工程と、分離した前記上部骨格(73)と前記側部部材(27)を含む前記下部骨格(74)とにそれぞれ部品を組み付ける工程と、部品を組み付け終えた前記上部骨格(73)と前記側部部材(27)を含む前記下部骨格(74)とを再度ボルト結合する工程とを含むことを特徴とする自動車車体の製造方法。
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