WO2022196183A1 - フレーム車両の車体構造 - Google Patents

フレーム車両の車体構造 Download PDF

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Publication number
WO2022196183A1
WO2022196183A1 PCT/JP2022/004773 JP2022004773W WO2022196183A1 WO 2022196183 A1 WO2022196183 A1 WO 2022196183A1 JP 2022004773 W JP2022004773 W JP 2022004773W WO 2022196183 A1 WO2022196183 A1 WO 2022196183A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
side member
rear side
reinforcement
kick
Prior art date
Application number
PCT/JP2022/004773
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
貴信 鳥谷
駿 内田
陽考 窪田
将貴 浅川
Original Assignee
三菱自動車工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱自動車工業株式会社 filed Critical 三菱自動車工業株式会社
Priority to JP2023506859A priority Critical patent/JP7415239B2/ja
Publication of WO2022196183A1 publication Critical patent/WO2022196183A1/ja

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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
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members

Definitions

  • the present invention relates to the body structure of a frame vehicle.
  • a frame vehicle is a vehicle with a structure in which the chassis frame and the cab body that constitutes the vehicle compartment are separated, and the cab body is mounted on the chassis frame via a vibration isolation (vibration damping) mount.
  • the chassis frame includes a pair of chassis side members extending in the longitudinal direction of the vehicle and spaced apart in the longitudinal direction of the vehicle, and a pair of chassis side members extending in the longitudinal direction of the vehicle at a plurality of locations spaced apart in the longitudinal direction of the vehicle. and a plurality of chassis cross members connecting the
  • the chassis side member includes a front side member arranged in the front part of the vehicle and a rear side member connected to the rear end of the front side member and arranged in the rear part of the vehicle.
  • the rear side member includes a front portion of the rear side member extending in the horizontal direction, a rear kick-up portion having a slope that gradually rises from the rear end of the front portion of the rear side member toward the rear of the vehicle, and a rear end of the rear kick-up portion. a rear side member rear portion extending horizontally rearward from the curved portion. Therefore, since such a frame vehicle has a rear kick-up portion, the height of the rear portion of the rear side member tends to be higher than the position of the bumper beam in the front portion of the vehicle other than the frame vehicle.
  • the intermediate portion of the fuel pipe is placed in one of the pair of rear side members.
  • the space between the rear portion of one of the rear side members and the lower portion of the cab body is arranged so as to extend along the vehicle width direction.
  • one embodiment of the present invention is supported via mounts on a chassis frame having a pair of chassis side members extending in the longitudinal direction of the vehicle and spaced apart in the vehicle width direction.
  • a cab body is provided, and the rear half portion of the vehicle of the chassis side member includes a rear side member front portion extending horizontally in a vehicle front-rear direction middle portion, and a rear side member front portion connected to the rear end of the rear side member front portion and extending toward the rear of the vehicle.
  • a rear kick-up portion that gradually displaces upward and a rear side member rear portion that is connected to the rear end of the rear kick-up portion and extends rearward.
  • a first rear side member rear portion connected to a rear end of the vehicle and gradually displaced downward toward the rear of the vehicle, and a second rear side member rear portion connected to the rear end of the first rear side member and extending rearward of the vehicle.
  • a first bending inducing portion that induces the rear portion of the first rear side member to bend downward with respect to the rear kick-up portion in the event of a rear-end collision at a boundary portion between the rear kick-up portion and the rear portion of the first rear side member;
  • a second bending inducer that induces the rear portion of the second rear side member to bend upward with respect to the rear portion of the first rear side member at a boundary portion between the rear portion of the first rear side member and the rear portion of the second rear side member in the event of a rear-end collision;
  • a portion is provided, and the middle portion of the fuel pipe is arranged behind the vehicle relative to the first bend-inducing portion.
  • the height of the bumper beam at the front of the vehicle is low. Even in the case of a rear-end collision, the collision load input from the other vehicle can be reliably received by the rear portion of the rear side member, which is advantageous in that the collision energy is surely absorbed by the chassis side member.
  • the rear portion of the first rear side member is bent downward from the first bend-inducing portion and the second bending-inducing portion.
  • the rear portion of the second rear side member is bent upward. Therefore, in the event of a rear-end collision, the rear portion of the rear side member is bent at the first bending-inducing portion and the second bending-inducing portion.
  • the collision energy can be efficiently absorbed at the rear part of the member, which is advantageous in improving the collision energy absorption performance.
  • the rear side member is bent in a V-shape projecting downward by the first bending-inducing portion and the second bending-inducing portion, it is advantageous in suppressing damage to the fuel pipe by the rear side member.
  • the entire rear portion of the rear side member does not bend downward, but bends downward into a convex V-shape. It is advantageous in protecting vehicle components and members.
  • FIG. 4 is an explanatory diagram of a rear-end collision test of a vehicle to which the vehicle body structure of the frame vehicle according to the embodiment is applied, (A) showing the state before the collision, and (B) showing the state after the collision;
  • FIG. 4 is a perspective view showing the positional relationship among a rear side member, a fuel tank, and a fuel pipe;
  • (A) is a side view of the rear side member viewed from the vehicle width direction, and
  • (B) is a diagram showing the relationship between the position of the rear side member in the longitudinal direction of the vehicle and the geometrical moment of inertia of the rear side member corresponding to the position.
  • (A) is a cross-sectional view along the line AA in FIG.
  • FIG. 3(A) is a cross-sectional view along the line BB in FIG. 3(A), and (C) is a cross-sectional view along the line CC in FIG. 3(A).
  • (D) is a cross-sectional view taken along line DD of FIG. 3(A).
  • FR indicates the front of the vehicle
  • HL the width direction of the vehicle
  • IN the inner side of the vehicle width direction
  • OUT the outer side of the vehicle width direction.
  • a vehicle to which the present invention is applied is a frame vehicle 10 including a cab body 12 including a cabin and a chassis frame 14 supporting the cab body 12 .
  • the cab body 12 includes a floor panel (not shown) that partitions the lower portion of the passenger compartment, and a floor frame 12A that supports the floor panel.
  • the floor frame 12A includes a pair of floor side members 1202 extending in the vehicle front-rear direction at intervals in the vehicle width direction, and a pair of floor side members 1202 extending in the vehicle width direction at a plurality of locations at intervals in the vehicle front-rear direction. and a plurality of floor cross members (not shown) connecting the members 1202 .
  • the floor side member 1202 includes a floor side member intermediate portion 1202A that extends substantially horizontally in the vehicle front-rear direction at the vehicle front-rear direction intermediate portion, and a floor side member intermediate portion 1202A that extends toward the front of the vehicle while being displaced upward from the vehicle front portion of the floor side member intermediate portion 1202A.
  • the vehicle rear end of the floor side member rear end portion 1202D is positioned in front of the vehicle relative to the vehicle rear end of the chassis side member 16 (rear end 28R of the second rear side member rear portion 28B), which will be described later.
  • the chassis frame 14 supports the floor side member 1202 of the floor frame 12A or a floor cross member (not shown) from below via a vibration damping (vibration damping) mount (not shown). As shown in FIG. 2 , the chassis frame 14 includes a pair of chassis side members 16 and multiple chassis cross members 18 . The pair of chassis side members 16 extend in the vehicle front-rear direction with a gap in the vehicle width direction. As shown in FIG.
  • the chassis side member 16 includes a front side member 20 that is arranged in the vehicle front portion and that constitutes the vehicle front half portion of the chassis side member 16, and a front side member 20 that and a rear side member 22 that is connected to the rear end of the chassis side member 16 and arranged in the rear part of the vehicle to constitute the rear part of the vehicle.
  • the plurality of chassis cross members 18 extend in the vehicle width direction at a plurality of locations spaced apart in the vehicle front-rear direction and connect the pair of chassis side members 16 .
  • the rear end cross member 1802 is positioned furthest to the rear of the vehicle. connecting between.
  • the rear side member 22 includes a rear side member front portion 24, a rear kick-up portion 26, and a rear side member rear portion 28.
  • the rear side member 22 is two members that are joined in the vehicle width direction, and has a rectangular closed cross-sectional structure elongated vertically. It is formed.
  • the rear side member 22 includes a lower surface portion 22A, an upper surface portion 22B, an inner side surface portion 22C, and an outer side surface portion 22D.
  • the lower surface portion 22A is positioned below the rear side member 22 .
  • the upper surface portion 22B faces the lower surface portion 22A and is positioned above the lower surface portion 22A with a space therebetween.
  • the inner side surface portion 22C connects the inner end portions of the upper surface portion 22B and the lower surface portion 22A in the vehicle width direction.
  • the outer side surface portion 22D connects the outer end portions of the upper surface portion 22B and the lower surface portion 22A in the vehicle width direction.
  • the front end of the rear side member front portion 24 is connected to the rear end of the front side member 20 and extends horizontally rearward of the vehicle.
  • the rear kick-up portion 26 is connected to the rear end of the rear side member front portion 24 and gradually displaces upward toward the rear of the vehicle.
  • the rear kickup portion 26 includes a rear kickup front portion 26A and a rear kickup rear portion 26B.
  • the rear kick-up front portion 26A is connected to the rear end of the rear side member front portion 24 and formed with an inclination that gradually displaces upward toward the rear of the vehicle.
  • the rear kick-up front portion 26B is connected to the rear end of the rear kick-up front portion 26A and is formed with an inclination that gradually displaces upward with a smaller gradient (inclination) than the rear kick-up front portion 26A toward the rear of the vehicle.
  • the boundary portion 26C between the rear kick-up front portion 26A and the rear kick-up rear portion 26B is a portion where the degree of inclination changes locally. This portion is likely to deform due to concentration of the collision load input from the rear end 28R of the second rear side member rear portion 28B.
  • the rear side member rear portion 28 is connected to the rear end of the rear kickup portion 26 (rear kickup rear portion 26B) and extends rearward.
  • the rear side member rear portion 28 includes a first rear side member rear portion 28A connected to the rear end of the rear kick-up portion 26 and gradually displaced downward toward the rear of the vehicle, and connected to the rear end of the first rear side member rear portion 28A and extending substantially horizontally. and a second rear side member rear portion 28B extending rearward of the vehicle along. Therefore, the rear end 28R of the second rear side member rear portion 28B is displaced below the front end of the first rear side member rear portion 28A.
  • the rear kick-up rear portion 26B is formed with an inclination that gradually displaces upward toward the rear of the vehicle, and the first rear side member rear portion 28A gradually downward toward the rear of the vehicle. It is formed with a displaceable slope. Therefore, the boundary portion between the rear kick-up rear portion 26B and the first rear side member rear portion 28A is formed by a curved portion that curves upward. In other words, the rear kick-up rear portion 26B and the first rear side member rear portion 28A intersect at an obtuse angle, and the slope of the boundary portion between the rear kick-up rear portion 26B and the first rear side member rear portion 28A changes in the opposite direction. part. Therefore, this boundary portion becomes a front load concentrated portion 30 where the collision load input from the rear end 28R of the rear side member 22 concentrates during a rear-end collision.
  • the first rear side member rear portion 28A is formed with an inclination that gradually displaces downward toward the rear of the vehicle, and the second rear side member rear portion 28B extends substantially horizontally toward the rear of the vehicle. Therefore, the first rear side member rear portion 28A and the second rear side member rear portion 28B intersect at an obtuse angle, and the boundary portion between the first rear side member rear portion 28A and the second rear side member rear portion 28B has a local degree of inclination. It is a part that changes dramatically. Therefore, this boundary portion becomes a rear load concentrated portion 32 where the collision load input from the rear end 28R of the rear side member 22 concentrates during a rear-end collision.
  • an intermediate portion 3802 of the fuel pipe 38 connecting the fuel filler port 34 and the fuel tank 36 is located between the rear side member rear portion 28 of one of the pair of rear side members 22 and the cab body located above it. 12 and one floor side member 1202 (see FIG. 1(A)) that extends along the vehicle width direction.
  • an intermediate portion 3802 of the fuel pipe 38 is arranged above the rear side member rear portion 28 and behind the front portion load concentration portion 30 in the vehicle front-rear direction.
  • the intermediate portion 3802 of the fuel pipe 38 is arranged between the front load concentration portion 30 and the rear load concentration portion 32 when viewed from the vehicle width direction.
  • the rear side member 22 is provided with first, second, third and fourth reinforcements 40, 42, 44 and 46.
  • the first reinforcement 40 is provided extending in the vehicle front-rear direction from the lower portion of the rear side member front portion 24 to the lower portion of the rear kick-up portion 26 . Therefore, the first reinforcement 40 is provided extending in the vehicle front-rear direction so as to straddle the boundary portion 26C between the rear kickup front portion 26A and the rear kickup rear portion 26B.
  • the rear end 40R of the first reinforcement 40 does not reach the front load concentration point 30, but is close to the front load concentration point 30 and forward of the vehicle from the front load concentration point 30.
  • the first reinforcement 40 includes a first reinforcement lower surface portion 4002, a first reinforcement inner side surface portion 4004, and a bent portion 4006 connecting them, and has an L-shaped cross section. is presenting. Specifically, in the rear side member front portion 24 and the rear kick-up portion 26, the bent portion 4006 of the first reinforcement 40 is overlapped and joined to the corner portion where the lower surface portion 22A and the inner side surface portion 22C intersect from the inside thereof. It is The first reinforcement lower surface portion 4002 is overlapped and joined to the lower surface portion 22A near the corner portion from the inner side thereof. The first reinforcement inner side surface portion 4004 is overlapped and joined to the inner side surface portion 22C closer to the corner from the inner side thereof.
  • the second reinforcement 42 is located above the first rear side member rear portion 28A located between the front load concentration point 30 and the rear load concentration point 32. It is provided so as to extend in the longitudinal direction of the vehicle.
  • the front end 42 ⁇ /b>F of the second reinforcement 42 is positioned near the front load concentration point 30 and away from the front load concentration point 30 toward the rear of the vehicle.
  • a rear end 42R of the second reinforcement 42 is positioned near the rear load concentrated portion 32 and away from the rear load concentrated portion 32 in front of the vehicle.
  • the second reinforcement 42 includes a second reinforcement upper surface portion 4202, a second reinforcement inner side surface portion 4204, and a second reinforcement intermediate portion 4206 connecting them. I have.
  • the second reinforcement upper surface portion 4202 is overlapped and joined to the upper surface portion 22B near the corner where the upper surface portion 22B and the inner side surface portion 22C intersect from the inside of the first rear side member rear portion 28A.
  • the second reinforcement inner side surface portion 4204 is overlapped and joined from the inside of the first rear side member rear portion 28A to the inner side surface portion 22C near the corner where the upper surface portion 22B and the inner side surface portion 22C intersect.
  • the second reinforcement intermediate portion 4206 is positioned away from the corner where the upper surface portion 22B and the inner side surface portion 22C intersect.
  • the third reinforcement 44 extends over the upper portion of the rear side member front portion 24, the upper portion of the rear kick-up front portion 26A, and the upper portion of the rear kick-up rear portion 26B. It exists and is provided. Therefore, the third reinforcement 44 is provided extending in the vehicle front-rear direction so as to straddle the boundary portion 26C between the rear kickup front portion 26A and the rear kickup rear portion 26B. A rear end 44 ⁇ /b>R of the third reinforcement 44 is positioned near the front load concentration point 30 and away from the front load concentration point 30 toward the front of the vehicle. As shown in FIG. 4A, the third reinforcement 44 is composed of two reinforcements, an inner third reinforcement 44A and an outer third reinforcement 44B.
  • the inner third reinforcement 44A includes an inner third reinforcement upper surface portion 4402A, an inner side surface portion 4404A of the inner third reinforcement, and a bent portion 4406A connecting them, and has an L-shaped cross section. Specifically, in the rear side member front portion 24 and the rear kick-up portion 26, the bent portion 4406A of the inner third reinforcement 44A is superimposed from the inner side on the corner portion where the upper surface portion 22B and the inner side surface portion 22C intersect. are spliced.
  • the inner third reinforcement upper surface portion 4402A is overlapped and joined to the upper surface portion 22B closer to the corner from the inner side thereof.
  • the inner third reinforcement inner side surface portion 4404A is overlapped and joined to the inner side surface portion 22C closer to the corner from the inner side thereof.
  • the outer third reinforcement 44B includes an outer third reinforcement upper surface portion 4402B, an outer third reinforcement outer side surface portion 4404B, and a bent portion 4406B connecting them, and has an L-shaped cross section. Specifically, in the rear side member front portion 24 and the rear kick-up portion 26, the bent portion 4406B of the outer third reinforcement 44B is superimposed from the outer side on the corner where the upper surface portion 22B and the outer side surface portion 22D intersect. are spliced.
  • the outer third reinforcement upper surface portion 4402B is overlapped and joined to the upper surface portion 22B near the corner from the inner side thereof.
  • the outer third reinforcement outer side surface portion 4404B is overlapped and joined to the outer side surface portion 22D closer to the corner from the inner side thereof.
  • the fourth reinforcement 46 extends in the vehicle longitudinal direction from the lower portion of the rear portion of the rear kick-up portion 26B to the lower portion of the front end of the first rear side member portion 28A. is provided.
  • the front end 46F of the fourth reinforcement 46 is slightly spaced rearward of the vehicle from the rear end 40R of the first reinforcement 40 .
  • a rear end 46R of the fourth reinforcement 46 overlaps the front load concentrated portion 30 when viewed in the vehicle width direction.
  • the fourth reinforcement 46 includes a fourth reinforcement inner side surface portion 4602, a fourth reinforcement outer side surface portion 4604, and a fourth reinforcement lower surface portion 4606. .
  • the fourth reinforcement inner side surface portion 4602 overlaps the inner side surface portion 22C near the corner where the inner side surface portion 22C and the lower surface portion 22A intersect from the outside of the rear kick-up rear portion 26B and the first rear side member rear portion 28A. are joined together.
  • the fourth reinforcement outer side surface portion 4604 overlaps the outer side surface portion 22D near the corner where the outer side surface portion 22D and the lower surface portion 22A intersect from the outside of the rear kick-up rear portion 26B and the first rear side member rear portion 28A. are joined together.
  • the fourth reinforcement lower surface portion 4606 connects the lower end of the fourth reinforcement inner side surface portion 4602 and the lower end of the fourth reinforcement outer side surface portion 4604, and faces the lower surface portion 22A at a location spaced downward from the lower surface portion 22A. It is located.
  • the geometrical moment of inertia of the rear side member 22 in the longitudinal direction of the vehicle is indicated by That is, the rear end 40R of the first reinforcement 40 is located in the lower part of the rear side member 22, near the front load concentration point 30 and away from the front load concentration point 30 in front of the vehicle.
  • a front end 42 ⁇ /b>F of the second reinforcement 42 is located on the upper portion of the rear side member 22 , near the front load concentration point 30 and away from the front load concentration point 30 toward the rear of the vehicle.
  • the rear end 42R of the second reinforcement 42 is located in the upper portion of the rear side member 22, near the rear load concentrated portion 32 and away from the rear load concentrated portion 32 in front of the vehicle.
  • the rear end 44R of the third reinforcement 44 is located in the upper portion of the rear side member 22, near the front load concentration point 30 and away from the front load concentration point 30 to the front of the vehicle.
  • a fourth reinforcement 46 is provided in the lower portion of the rear side member 22 so as to straddle the front load concentrated portion 30 in the vehicle front-rear direction. Therefore, at the front load concentration point 30, the rear kick-up rear portion 26B and the first rear side member rear portion 28A intersect at an obtuse angle, and as shown in FIG.
  • Reference numeral 30 denotes a portion where the moment of inertia of area is locally lowered. Therefore, it is designed to induce the first rear side member rear portion 28A to bend downward from the front portion load concentrated portion 30 with respect to the rear kick-up rear portion 26B in the event of a rear-end collision. Therefore, the front load concentrated portion 30 constitutes a first bending inducing portion 30A that induces downward bending of the first rear side member rear portion 28A from the front load concentrated portion 30 in the event of a rear-end collision.
  • the first reinforcement 40 and the third reinforcement 44 are arranged in the upper portion and the lower portion of the rear side member 22 so as to straddle the boundary portion 26C between the rear kickup front portion 26A and the rear kickup rear portion 26B. It is provided extending in the front-rear direction. Therefore, the boundary portion 26C between the rear kick-up portion 26 and the rear kick-up rear portion 26B, which is likely to be bent and deformed by the collision load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision, is reinforced. Therefore, the collision load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision further induces the first rear side member rear portion 28A to bend downward from the first bending inducing portion 30A.
  • the rear end 42R of the second reinforcement 42 is positioned near the rear load concentration point 32 in the upper portion of the rear side member 22 and away from the rear load concentration point 32 in front of the vehicle, as shown in FIG. 4(D).
  • the rear load concentration point 32 is a point where the first rear side member rear portion 28A and the second rear side member rear portion 28B intersect at an obtuse angle, and as shown in FIG. This is the location where the intensity drops locally.
  • the collision load input from the rear end 28R of the rear side member 22 at the time of a rear-end collision becomes more likely to be concentrated at the rear load concentration point 32, and the second rear side member rear portion 28B is placed at the rear load concentration point 32 with respect to the first rear side member rear portion 28A. It is designed to induce bending upward from the Therefore, the rear load concentrated portion 32 constitutes a second bending inducing portion 32A that induces upward bending of the second rear side member rear portion 28B from the rear load concentrated portion 32 in the event of a rear-end collision.
  • the rear end 28R of the second rear side member rear portion 28B (rear side member 22) is displaced below the front end of the first rear side member rear portion 28A.
  • the collision load input from the opponent vehicle is surely received by the rear part 28 of the rear side member. This is advantageous in that the collision energy can be reliably absorbed by the chassis side member 16 .
  • a truck 50 is used in the rear collision test of the frame vehicle 10, and a collision object (barrier) 50A that collides with the rear portion of the frame vehicle 10 is provided at the front end of the truck 50. is provided.
  • a collision object 50A collides with the rear portion of the frame vehicle 10 from behind.
  • a rear collision test of the frame vehicle 10 is performed.
  • the first rear side member rear portion 28A and the second rear side member rear portion 28B are V-shaped and project downward at two locations, the first bending induction portion 30A and the second bending induction portion 32A, which are spaced apart in the longitudinal direction of the vehicle. bend into. Therefore, since the rear side member rear portion 28 is bent at the first bending-inducing portion 30A and the second bending-inducing portion 32A at the time of a rear-end collision, compared to the case where the rear side-member rear portion 28 as a whole is bent upward or downward at the time of a rear-end collision, The collision load can be efficiently absorbed by the rear side member rear portion 28, which is advantageous in improving the collision energy absorbing performance.
  • first rear side member rear portion 28A is displaced downward from the fuel pipe 38, it is advantageous in suppressing damage to the fuel pipe 38 caused by the rear side member 22.
  • entire rear side member rear portion 28 does not bend downward in the event of a rear-end collision, but bends downward in a convex V-shape, when some vehicle component or member is arranged below the rear half portion of the rear side member rear portion 28 . , which is advantageous in protecting these vehicle components and members.
  • the first reinforcement 40 extending in the vehicle front-rear direction from the lower portion of the rear side member front portion 24 to the lower portion of the rear kick-up portion 26 is provided, and the rear end 40R of the first reinforcement 40 is By being positioned near the first bending induction portion 30A and at a location spaced in front of the vehicle from the first bending induction portion 30A, as shown in FIG. This is advantageous for locally lowering the moment. Therefore, it is advantageous in that the first rear side member rear portion 28A is reliably bent downward from the first bending inducing portion 30A by the collision load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision. This is advantageous in reliably displacing the pipe 38 downward and suppressing damage to the fuel pipe 38 by the rear side member 22 .
  • a second reinforcement 42 extending in the vehicle front-rear direction is provided above the first rear side member rear portion 28A positioned between the first bending induction portion 30A and the second bending induction portion 32A.
  • a front end 42F of the second reinforcement 42 is positioned near the first bending induction portion 30A and spaced rearward of the vehicle from the first bending induction portion 30A. Therefore, as shown in FIG. 3(B), it is advantageous in locally reducing the geometrical moment of inertia in the first bending inducing portion 30A, and the impact load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision is reduced.
  • first bending induction portion 30A It becomes easier to concentrate on the first bending induction portion 30A, which is advantageous for reliably bending the first rear side member rear portion 28A downward from the first bending induction portion 30A.
  • the rear end 42R of the second reinforcement 42 is located near the second bending induction portion 32A and away from the second bending induction portion 32A toward the front of the vehicle, the cross section of the second bending induction portion 32A This is advantageous for locally lowering the next moment.
  • the first rear side member rear portion 28A and the second rear side member rear portion 28B intersect at an obtuse angle at the second bending inducing portion 32A.
  • the second rear side member rear portion 28B is reliably bent upward from the second bending inducing portion 32A by the collision load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision. It is advantageous in suppressing damage.
  • the third reinforcement 44 forms a boundary portion 26C between the rear side member front portion 24, the rear kickup front portion 26A, and the rear kickup rear portion 26B. It extends in the vehicle front-back direction so that it may straddle. Therefore, the third reinforcement 44 reinforces the boundary portion 26C between the rear kick-up front portion 26A and the rear kick-up rear portion 26B, which is likely to be bent and deformed by the collision load input from the rear end 28R of the rear side member 22 in the event of a rear-end collision. This is advantageous in suppressing bending of the boundary portion 26C.
  • the first bending-inducing portion 30A and the second bending-inducing portion 32A it is advantageous for the first bending-inducing portion 30A and the second bending-inducing portion 32A to bend more reliably in the event of a rear-end collision.
  • the rear end 44R of the third reinforcement 44 is positioned near the first bending induction portion 30A and spaced forward of the vehicle from the first bending induction portion 30A. Therefore, it is advantageous in locally reducing the geometrical moment of inertia in the first bending inducing portion 30A, and in the event of a rear-end collision, it is advantageous in ensuring that the first rear side member rear portion 28A bends downward from the first bending inducing portion 30A. Become. Therefore, it is advantageous in suppressing damage to the fuel pipe 38 by the rear side member 22 .
  • the rear end 40R of the first reinforcement 40 is located at a position spaced forward from the first bending inducing portion 30A, and extends from the rear portion of the rear kick-up rear portion 26B to the front end of the first rear side member rear portion 28A.
  • a fourth reinforcement 46 is provided with a gap from the rear end 40R of the first reinforcement 40 .
  • the front end 46F of the fourth reinforcement 46 is slightly spaced rearward of the vehicle from the rear end 40R of the first reinforcement 40, and the rear end 46R of the fourth reinforcement 46 is the first bend-inducing portion when viewed from the vehicle width direction. It overlaps with 30A.
  • first rear side member rear portion 28A is reliably bent downward from the first bending-inducing portion 30A by the collision load input from the rear end 28R of the rear side member 22 during a rear-end collision. It is advantageous in suppressing damage.
  • Frame vehicle 12 Cab body 12A Floor frame 1202 Floor side member 14 Chassis frame 16 Chassis side member 18 Chassis cross member 20 Front side member 22 Rear side member 22A Lower surface 22B Upper surface 22C Inner side 22D Outer side 24 Rear side member front 26 Rear kick-up portion 26A Rear kick-up front portion 26B Rear kick-up rear portion 26C Boundary portion 28 Rear side member rear portion 28A First rear side member rear portion 28B Second rear side member rear portion 28R Rear end 30 Front portion load concentration portion 30A First bending inducing portion 32 Rear load concentration point 32A Second bending induction part 34 Fuel supply port 36 Fuel tank 3802 Intermediate part 40 First reinforcement 4002 First reinforcement lower surface part 4404 First reinforcement inner side surface part 4406 Bending part 40R Rear end 42 Second reinforcement 4202 Second reinforcement upper surface portion 4204 Second reinforcement inner side surface portion 4206 Second reinforcement intermediate portion 42F Front end 42R Rear end 44 Third reinforcement 44A Inner third reinforcement 4402A Inner third reinforcement upper surface portion , 4404A Inner third reinforcement inner side surface

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
PCT/JP2022/004773 2021-03-18 2022-02-07 フレーム車両の車体構造 WO2022196183A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023506859A JP7415239B2 (ja) 2021-03-18 2022-02-07 フレーム車両の車体構造

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021044670 2021-03-18
JP2021-044670 2021-03-18

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WO2022196183A1 true WO2022196183A1 (ja) 2022-09-22

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JPS59133326U (ja) * 1983-02-28 1984-09-06 トヨタ自動車株式会社 自動車の燃料パイプ構造
JPH05104963A (ja) * 1991-10-17 1993-04-27 Nissan Motor Co Ltd 自動車用燃料タンク周り構造
JP2005206041A (ja) * 2004-01-22 2005-08-04 Honda Motor Co Ltd ガス燃料自動車の後部構造
JP2008265705A (ja) * 2007-04-25 2008-11-06 Nissan Motor Co Ltd 車両後部構造
JP2009057031A (ja) * 2007-09-03 2009-03-19 Hyundai Motor Co Ltd 燃料電池車両のシャーシフレーム
JP2016150600A (ja) * 2015-02-16 2016-08-22 三菱自動車工業株式会社 フレーム車両の車体構造
JP2019026237A (ja) * 2017-08-02 2019-02-21 トヨタ自動車株式会社 車両後部構造
JP2019188998A (ja) * 2018-04-24 2019-10-31 マツダ株式会社 車両の燃料配管保護構造
JP2020001535A (ja) * 2018-06-27 2020-01-09 トヨタ自動車株式会社 車両後部構造

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133326U (ja) * 1983-02-28 1984-09-06 トヨタ自動車株式会社 自動車の燃料パイプ構造
JPH05104963A (ja) * 1991-10-17 1993-04-27 Nissan Motor Co Ltd 自動車用燃料タンク周り構造
JP2005206041A (ja) * 2004-01-22 2005-08-04 Honda Motor Co Ltd ガス燃料自動車の後部構造
JP2008265705A (ja) * 2007-04-25 2008-11-06 Nissan Motor Co Ltd 車両後部構造
JP2009057031A (ja) * 2007-09-03 2009-03-19 Hyundai Motor Co Ltd 燃料電池車両のシャーシフレーム
JP2016150600A (ja) * 2015-02-16 2016-08-22 三菱自動車工業株式会社 フレーム車両の車体構造
JP2019026237A (ja) * 2017-08-02 2019-02-21 トヨタ自動車株式会社 車両後部構造
JP2019188998A (ja) * 2018-04-24 2019-10-31 マツダ株式会社 車両の燃料配管保護構造
JP2020001535A (ja) * 2018-06-27 2020-01-09 トヨタ自動車株式会社 車両後部構造

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