WO2023182315A1 - 車両前端部構造 - Google Patents

車両前端部構造 Download PDF

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Publication number
WO2023182315A1
WO2023182315A1 PCT/JP2023/011032 JP2023011032W WO2023182315A1 WO 2023182315 A1 WO2023182315 A1 WO 2023182315A1 JP 2023011032 W JP2023011032 W JP 2023011032W WO 2023182315 A1 WO2023182315 A1 WO 2023182315A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
cover
upper bar
longitudinal direction
wall
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/011032
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
央 大東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP2024510199A priority Critical patent/JP7743920B2/ja
Priority to AU2023240696A priority patent/AU2023240696B2/en
Publication of WO2023182315A1 publication Critical patent/WO2023182315A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52—Radiator or grille guards ; Radiator grilles
    • 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

Definitions

  • the present invention relates to a vehicle front end structure.
  • FIG. 9 A conventional vehicle front end structure is shown in FIG. 9.
  • This vehicle front end structure includes a radiator grille 51 extending in the vehicle width direction, and an upper bar 52 (a part of the radiator support) extending in the vehicle width direction and arranged at a distance from the radiator grille 51 toward the rear of the vehicle. ), and an upper bar cover 53 that covers an opening formed between the radiator grille 51 and the upper bar 52 from above.
  • the upper bar cover 53 is removably fixed to the upper surface of the cover attachment part 54 and the upper surface of the upper bar 52 with clips 55.
  • the cover attachment portion 54 is a plate piece provided to protrude from the upper part of the radiator grille 51 toward the rear of the vehicle.
  • Patent Document 1 also shows a similar vehicle front end structure.
  • the inventor of the present application proposed that the upper part of the radiator grille 51 be bent in order to reduce the bending moment applied to the legs of a pedestrian when a vehicle employing the vehicle front end structure shown in FIGS. 9 and 10 collides with a pedestrian. We focused on the need to improve support rigidity.
  • the upper bar cover 53 is generally made of a material such as resin, and is relatively easily deformed by external force. Therefore, when the radiator grill 51 collides with a pedestrian while the vehicle is running, the upper bar cover 53 deforms due to the force acting on the radiator grill 51 from the pedestrian, and as the upper bar cover 53 deforms, the radiator grill 51 also deforms. There is a risk that the upper portion of the radiator grille 51 may be displaced toward the rear of the vehicle with respect to the lower portion of the radiator grille 51, and the radiator grille 51 may fall toward the rear of the vehicle.
  • the inventor of the present application proposed a method for reducing the bending moment applied to the legs of a pedestrian when the radiator grille 51 collides with a pedestrian while the vehicle is running. We considered improving the support rigidity of the upper part of the grille 51.
  • a reinforcing bracket (in the longitudinal direction of the vehicle) connecting the upper part of the radiator grille 51 and the upper bar 52 is used. It is conceivable that the upper part of the radiator grille 51 is supported not only by the upper bar 52 but also by its reinforcing bracket. This increases the cost and the number of parts.
  • This invention has been made in view of the above-mentioned problems, and its purpose is to prevent the radiator grill from collapsing toward the rear of the vehicle when the radiator grill collides with a pedestrian while the vehicle is running, and to provide a low-cost method.
  • An object of the present invention is to provide a vehicle front end structure.
  • the present invention provides a vehicle front end structure for a vehicle having the following configuration.
  • a radiator grill extending in the vehicle width direction at the front end of the vehicle; an upper bar that extends in the vehicle width direction and is spaced from the radiator grille toward the rear of the vehicle;
  • a vehicle front end structure comprising: an upper bar cover that covers from above an opening formed between the radiator grille and the upper bar;
  • the radiator grill has a cover attachment part that is provided to protrude from the upper part of the radiator grill toward the rear of the vehicle,
  • the upper bar cover is removably fixed to the upper surface of the cover attachment part,
  • a vehicle front end structure, wherein the upper bar cover is integrally formed with a rib that faces an end of the cover mounting portion on the vehicle rear side in the vehicle longitudinal direction.
  • a configuration may be adopted in which the upper bar cover is formed with a groove-shaped reinforcing bead extending in the longitudinal direction of the vehicle.
  • a configuration may be adopted in which the reinforcing bead and the cover attachment portion are located on the same straight line extending in the longitudinal direction of the vehicle.
  • the reinforcing bead may be formed such that a bottom portion of the reinforcing bead has a portion that overlaps with the top surface of the cover mounting portion, and the overlapping portion is fixed to the top surface of the cover mounting portion.
  • a configuration may be adopted in which a raised portion that extends continuously in the longitudinal direction of the vehicle is formed at the center of the bottom of the reinforcing bead in the vehicle width direction.
  • the cover attachment portion includes a rear end wall that faces the rib in the vehicle longitudinal direction, an upper wall that extends from the upper end of the rear end wall forward in the vehicle longitudinal direction and connects to the radiator grille, and a rear end wall that is connected to the radiator grille.
  • a lower wall extending forward in the longitudinal direction of the vehicle from a lower end and connecting to the radiator grill; and a connecting wall vertically connecting one end of the upper wall in the vehicle width direction and one end of the lower wall in the vehicle width direction.
  • the end portion of the cover attachment portion protruding toward the rear of the vehicle from the top of the radiator grille and the rib integrally formed on the upper bar cover face each other in the longitudinal direction of the vehicle. Therefore, when the upper part of the radiator grille is displaced toward the rear of the vehicle, the end of the cover mounting portion on the rear side of the vehicle is received by the rib of the upper bar cover. This prevents the radiator grill from falling toward the rear of the vehicle. Therefore, when the radiator grill collides with a pedestrian while the vehicle is running, it is possible to prevent the radiator grill from collapsing toward the rear of the vehicle and reduce the bending moment applied to the legs of the pedestrian. Further, in order to prevent the radiator grill from collapsing, it is sufficient to simply modify the shape of the upper bar cover without adding any member other than the upper bar cover, resulting in low cost.
  • FIG. 1 A perspective view showing a state in which a bonnet hood (not shown) of a vehicle is opened upward in a vehicle front end structure according to an embodiment of the present invention.
  • FIG. 1 A perspective view showing the state in which the upper bar cover in Figure 1 is removed.
  • FIG. 1 A plan view of the vicinity of the reinforcement bead of the upper bar cover shown in Figure 1, viewed from above.
  • Cross-sectional view along line IV-IV in Figure 3 Cross-sectional view along line V-V in Figure 4
  • Cross-sectional view along line VI-VI in Figure 4 Cross-sectional view along line VII-VII in Figure 4
  • FIG. 1 shows a vehicle front end structure according to an embodiment of the present invention.
  • This vehicle front end structure includes a radiator grille 1 extending in the vehicle width direction, an upper bar 2 (see FIG. 2) extending in the vehicle width direction at a distance from the radiator grille 1 toward the rear of the vehicle, and a radiator grille extending in the vehicle width direction. 1 and an upper bar cover 3 that covers an opening formed between the upper bar 2 and the upper bar 2 from above.
  • a pair of left and right headlamps 4 that illuminate the front of the vehicle are provided on both sides in the vehicle width direction with the radiator grille 1 in between.
  • a front bumper 5 is provided below the radiator grille 1 and extends in the vehicle width direction.
  • the radiator grill 1 is a member in which a plurality of outside air intake ports 6 are formed that penetrate in the longitudinal direction of the vehicle so that outside air can be taken in while the vehicle is running, and is fixed in an upright state at the front end of the vehicle.
  • the radiator grille 1 has a cover mounting portion 7 that is provided to protrude from the top of the radiator grille 1 toward the rear of the vehicle.
  • the cover mounting portion 7 is formed in a cantilever shape, with a front end in the vehicle longitudinal direction being a fixed end fixed to the upper rear surface of the radiator grille 1, and a rear end in the vehicle longitudinal direction being a free end.
  • a plurality of cover attachment parts 7 are provided at intervals in the vehicle width direction of the radiator grille 1.
  • the upper bar 2 is a structural member of the vehicle body, and is made of metal (such as steel). Both ends of the upper bar 2 are fixed to a pair of left and right upper frames (not shown) that are structural members of the vehicle body.
  • the upper bar 2 includes a part of a radiator support that supports the radiator so as to face the radiator grille 1 in the longitudinal direction of the vehicle so that outside air taken in from the radiator grille 1 as the vehicle travels is introduced into a radiator (not shown). It consists of
  • the upper bar cover 3 is removably fixed to the upper surface of the cover mounting portion 7 of the radiator grille 1 and the upper surface of the upper bar 2 with clips 8.
  • a clip insertion hole 9 for attaching a clip 8 (see FIG. 1) is formed in the cover attachment part 7, and a clip insertion hole 9 for attaching the clip 8 is also formed on the upper surface of the upper bar 2.
  • An insertion hole 10 is formed.
  • the clip 8 is a resin fixture for removably fixing vehicle parts such as the upper bar cover 3.
  • the clip 8 includes a hollow shaft with a flange that is inserted into the clip insertion holes 9 and 10, and a pushing member that expands and deforms the diameter of the portion of the hollow shaft that is inserted into the clip insertion holes 9 and 10 by being pushed into the inside of the hollow shaft.
  • This is a well-known system consisting of the following.
  • a plurality of reinforcing beads 11 are formed on the upper bar cover 3 at positions corresponding to the plurality of cover mounting portions 7 (see FIG. 2).
  • the upper bar cover 3 is integrally molded from resin.
  • the reinforcing bead 11 is a groove-shaped molded part that is formed when the upper bar cover 3 is molded and extends in the longitudinal direction of the vehicle.
  • the reinforcing bead 11 is formed so that the upper surface of the upper bar cover 3 is recessed in the shape of a groove, and the lower surface thereof is convex in correspondence with the recess.
  • the reinforcing bead 11 and the cover mounting portion 7 are located on the same straight line extending in the vehicle longitudinal direction (left-right direction in the figure).
  • the width of the reinforcing bead 11 in the vehicle width direction (vertical direction in the figure) is set to be the same as or larger than the width of the cover mounting portion 7 in the vehicle width direction. is contained.
  • the reinforcing bead 11 is formed such that the end of the bottom 12 of the reinforcing bead 11 on the vehicle front side overlaps the top surface of the cover mounting portion 7.
  • a clip insertion hole 13 for mounting the clip 8 is formed at the end of the bottom portion 12 of the reinforcing bead 11 on the vehicle front side. Then, the clip 8 is pushed into the clip insertion hole 13 of the bottom part 12 of the reinforcing bead 11 and the clip insertion hole 9 of the cover mounting part 7, and the clip 8 allows the bottom part 12 of the reinforcing bead 11 to be inserted into the upper surface of the cover mounting part 7. is fixed.
  • a raised portion 14 that extends continuously in the vehicle longitudinal direction is formed at the center of the bottom portion 12 of the reinforcing bead 11 in the vehicle width direction.
  • the raised portion 14 is a bank-shaped molded portion that is continuously raised in the longitudinal direction of the vehicle.
  • the raised portion 14 is formed such that the upper surface of the bottom portion 12 is raised like a bank, and the lower surface of the bottom portion 12 is concave in accordance with the raised portion.
  • the upper bar cover 3 is integrally formed with a rib 15 that faces the vehicle rear end of the cover mounting portion 7 in the vehicle longitudinal direction.
  • the rib 15 is formed into a plate shape that protrudes downward from the lower surface of the bottom portion 12 of the reinforcing bead 11 .
  • the rib 15 includes a plurality of rib body portions 15a formed at intervals in the vehicle width direction, and a rib connection portion 15b that connects the plurality of rib body portions 15a.
  • Each rib main body portion 15a is a plate-shaped portion whose thickness direction is the vehicle width direction and extends in the vehicle longitudinal direction.
  • the rib connecting portion 15b is a plate-shaped portion whose thickness direction is the longitudinal direction of the vehicle and extends in the vehicle width direction.
  • the ends of the plurality of rib main body portions 15a on the vehicle front side are respectively connected to the rib connecting portions 15b.
  • the reinforcing bead 11, the rib main body portion 15a, and the rib connecting portion 15b are seamlessly molded from resin.
  • the cover mounting portion 7 includes a rear end wall 16 that faces the rib 15 in the longitudinal direction of the vehicle, and extends from the upper end of the rear end wall 16 forward in the longitudinal direction of the vehicle to the radiator grille 1.
  • It is a box-shaped structure having a connecting wall 19 (see FIG. 5) that vertically connects one end of the box.
  • the rear end wall 16 vertically connects the end of the upper wall 17 on the vehicle rear side and the end of the lower wall 18 on the vehicle rear side.
  • the cover attachment portion 7 also has an intermediate wall 20 that vertically connects the upper wall 17 and the lower wall 18 between the radiator grille 1 and the rear end wall 16.
  • the rear end wall 16, the upper wall 17, the lower wall 18, the connecting wall 19, and the intermediate wall 20 are seamlessly molded from resin.
  • the vehicle front end structure of this embodiment includes a vehicle rear end portion (rear end wall 16) of a cover mounting portion 7 provided to protrude from the upper part of the radiator grille 1 toward the vehicle rear side.
  • the ribs 15 integrally formed on the upper bar cover 3 are disposed to face each other in the longitudinal direction of the vehicle.
  • the rear end portion is received by the rib 15 of the upper bar cover 3, thereby preventing the radiator grille 1 from falling toward the rear of the vehicle. Therefore, when the radiator grille 1 shown in FIG. 1 collides with a pedestrian while the vehicle is running, the radiator grille 1 is prevented from collapsing toward the rear of the vehicle, and the bending moment applied to the legs of the pedestrian is reduced. I can do it. Further, in order to prevent the radiator grille 1 from falling down, it is only necessary to modify the shape of the upper bar cover 3 without adding any member other than the upper bar cover 3, resulting in low cost.
  • a groove-shaped reinforcing bead 11 extending in the longitudinal direction of the vehicle is formed in the upper bar cover 3, so that the upper bar cover 3 resists external force in the longitudinal direction of the vehicle.
  • the reinforcing bead 11 and the cover mounting portion 7 are located on the same straight line extending in the longitudinal direction of the vehicle, so that the radiator grille 1 is prevented from colliding with a pedestrian.
  • the reinforcing bead 11 of the upper bar cover 3 functions like a tension rod, Deformation of the upper bar cover 3 can be effectively prevented.
  • the reinforcing bead 11 is formed such that the bottom part 12 of the reinforcing bead 11 has a portion that overlaps with the top surface of the cover mounting portion 7, and the overlapping portion is fixed to the upper surface of the cover attachment part 7 with a clip 8, so that when the radiator grille 1 collides with a pedestrian, the force acting on the upper bar cover 3 from the radiator grille 1 is transferred to the reinforcement bead of the upper bar cover 3. 11 can be directly supported, and deformation of the upper bar cover 3 can be effectively prevented.
  • a raised portion 14 that extends continuously in the vehicle longitudinal direction is formed at the center of the bottom portion 12 of the reinforcing bead 11 in the vehicle width direction. It is possible to effectively increase the bending rigidity of the reinforcing bead 11 portion of the upper bar cover 3.
  • this vehicle front end structure includes a rear end wall 16 as a cover mounting portion 7 that faces the rib 15 in the vehicle longitudinal direction, and a an upper wall 17 extending forward in the vehicle longitudinal direction from the lower end of the rear end wall 16, a lower wall 18 extending forward in the vehicle longitudinal direction, and a connecting wall 19 vertically connecting one end of the upper wall 17 and the lower wall 18 in the vehicle width direction. Since the box-shaped structure having the following is adopted, the bending rigidity of the cover mounting portion 7 is high.
  • the upper part of the radiator grille 1 is displaced toward the rear of the vehicle, and the end of the cover mounting portion 7 on the rear side of the vehicle (rear end wall 16) is received by the rib 15 of the upper bar cover 3.
  • the bending deformation that occurs in the cover mounting portion 7 can be suppressed to a small level, and the radiator grille 1 can be effectively prevented from collapsing toward the rear of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
PCT/JP2023/011032 2022-03-22 2023-03-20 車両前端部構造 Ceased WO2023182315A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2024510199A JP7743920B2 (ja) 2022-03-22 2023-03-20 車両前端部構造
AU2023240696A AU2023240696B2 (en) 2022-03-22 2023-03-20 Vehicle front end portion structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-045231 2022-03-22
JP2022045231 2022-03-22

Publications (1)

Publication Number Publication Date
WO2023182315A1 true WO2023182315A1 (ja) 2023-09-28

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ID=88101087

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/011032 Ceased WO2023182315A1 (ja) 2022-03-22 2023-03-20 車両前端部構造

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JP (1) JP7743920B2 (https=)
AU (1) AU2023240696B2 (https=)
WO (1) WO2023182315A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003080958A (ja) * 2001-09-14 2003-03-19 Honda Motor Co Ltd 車両の水冷エンジン用ラジエータ上部取付構造
JP2012153184A (ja) * 2011-01-24 2012-08-16 Toyota Motor Corp エンジン吸気構造
JP2019043419A (ja) * 2017-09-05 2019-03-22 マツダ株式会社 車両の前部車体構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003080958A (ja) * 2001-09-14 2003-03-19 Honda Motor Co Ltd 車両の水冷エンジン用ラジエータ上部取付構造
JP2012153184A (ja) * 2011-01-24 2012-08-16 Toyota Motor Corp エンジン吸気構造
JP2019043419A (ja) * 2017-09-05 2019-03-22 マツダ株式会社 車両の前部車体構造

Also Published As

Publication number Publication date
JP7743920B2 (ja) 2025-09-25
JPWO2023182315A1 (https=) 2023-09-28
AU2023240696A1 (en) 2024-10-10
AU2023240696B2 (en) 2025-10-02

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