WO2024014481A1 - Structure arrière de véhicule - Google Patents

Structure arrière de véhicule Download PDF

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Publication number
WO2024014481A1
WO2024014481A1 PCT/JP2023/025742 JP2023025742W WO2024014481A1 WO 2024014481 A1 WO2024014481 A1 WO 2024014481A1 JP 2023025742 W JP2023025742 W JP 2023025742W WO 2024014481 A1 WO2024014481 A1 WO 2024014481A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
width direction
spare tire
vehicle width
cross member
Prior art date
Application number
PCT/JP2023/025742
Other languages
English (en)
Japanese (ja)
Inventor
友幸 大江
健夫 水口
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
Publication of WO2024014481A1 publication Critical patent/WO2024014481A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D43/00—Spare wheel stowing, holding, or mounting arrangements
    • B62D43/02—Spare wheel stowing, holding, or mounting arrangements external to the vehicle body
    • B62D43/04—Spare wheel stowing, holding, or mounting arrangements external to the vehicle body attached beneath the vehicle body

Definitions

  • the present invention relates to a rear structure of a vehicle that is equipped with a spare tire at the rear lower part.
  • Patent Document 1 discloses a vehicle in which a cross member extending in the vehicle width direction between left and right side members is equipped with a traction device such as a chain, and a spare tire is supported so as to be suspended from the lower part of the cross member. .
  • a relatively large drive device is arranged near the axle of the rear wheels.
  • the vertical position of the spare tire may be set higher behind the rear wheels. In this way, when the vehicle-mounted equipment located in front of the spare tire is located below the spare tire located at the rear of the vehicle, the spare tire may be damaged by the structure in the event of a rear collision, as in Patent Document 1. In some cases, it may be difficult to release the material downward.
  • the present invention was made to solve such problems, and an object of the present invention is to provide a rear structure for a vehicle that suppresses damage to vehicle-mounted equipment due to movement of a spare tire in the event of a rear collision.
  • the vehicle rear structure of the present invention connects a pair of side members arranged at intervals in the vehicle width direction and extending in the vehicle longitudinal direction, and a rear part of the pair of side members.
  • a cross member extending in the vehicle width direction, a vehicle-mounted device disposed in front of the cross member, and a spare tire supported by the cross member behind the vehicle-mounted device, the vehicle-mounted device , located on one side in the vehicle width direction with respect to the center of the spare tire, the cross member is provided with a mounting hole for mounting the spare tire, and the mounting hole extends toward the front of the vehicle in the vehicle width direction. It is characterized by being a long hole that extends obliquely to the other side in the direction.
  • the mounting hole extends at an inclination toward the other side in the vehicle width direction such that the inclination with respect to the longitudinal direction of the vehicle becomes larger toward the front of the vehicle.
  • the mounting holes are provided in a pair at intervals in the vehicle width direction,
  • the attachment hole located on one side in the vehicle width direction extends obliquely toward the other side in the vehicle width direction, and preferably extends further forward of the vehicle than the attachment hole located on the other side in the vehicle width direction.
  • the cross member is provided with a reinforcement extending in the vehicle width direction, and the reinforcement is preferably inclined forward and toward the other side in the vehicle width direction at a location located in front of the mounting hole. .
  • a protector is provided between the vehicle-mounted equipment and the spare tire, and a rear surface of the protector is preferably inclined toward the front and the other side in the vehicle width direction.
  • the protector restricts the spare tire from moving further forward to avoid collision with the equipment mounted on the vehicle. I can do it.
  • the spare tire contacts the protector and is pushed further forward, the spare tire can be moved to the other side in the vehicle width direction along the inclined rear surface of the protector. Thereby, it is possible to further improve the ability to avoid collisions with vehicle-mounted equipment located on one side in the vehicle width direction.
  • the vehicle is an electric vehicle
  • the vehicle-mounted equipment is a rear wheel drive unit including a travel motor.
  • the spare tire is pushed forward during a rear collision of the electric vehicle, it is possible to suppress the collision with the rear wheel drive unit.
  • the vehicle rear structure of the present invention it is possible to protect the vehicle-mounted equipment by avoiding collision of the spare tire with the vehicle-mounted equipment in the event of a rear-end collision of the vehicle.
  • FIG. 1 is a top view showing a rear structure of a vehicle according to an embodiment of the present invention.
  • FIG. 1 is a side view showing a rear structure of a vehicle according to a first embodiment of the present invention.
  • FIG. 2 is a top view showing the fixing part structure of the spare tire carrier according to the first embodiment.
  • FIG. 2 is a top view showing an example of the shape of a bolt hole for fixing the spare tire carrier according to the first embodiment. It is a top view which shows the fixed part structure of the spare tire carrier based on 2nd Embodiment of this invention.
  • FIG. 1 is a top view showing the rear structure of a vehicle 1 according to an embodiment of the present invention.
  • FIG. 1 shows various frames of a vehicle, a rear wheel drive unit 2 (equipment mounted on the vehicle), and a spare tire 3.
  • FIG. 2 is a side view showing the rear structure of the vehicle 1 according to the first embodiment of the present invention.
  • a vehicle 1 employing the rear structure of the present invention is, for example, a pickup truck, and its rear wheels are suspended by a De Dion type suspension device 4.
  • the vehicle 1 includes a pair of left and right side members 5a and 5b that extend in the vehicle longitudinal direction and are spaced apart in the vehicle width direction.
  • the De Dion suspension device 4 has a structure in which left and right support portions 7a and 7b, which rotatably support a rear wheel drive shaft 6, are connected by a De Dion tube 8.
  • the left and right support parts 7a and 7b are suspended from the left and right side members 5a and 5b by leaf springs 9a and 9b, respectively.
  • both end portions of the dodion tube 8 in the vehicle width direction are connected to left and right side members 5a, 5b by dampers 10a, 10b, respectively.
  • the vehicle 1 is an electric vehicle whose rear wheels are driven by an electric motor.
  • One rear wheel drive motor 2a travel motor
  • a transmission 2b transmission 2b
  • a differential 2c differential 2c
  • a high voltage component 2d such as a transformer
  • the differential 2c is arranged approximately at the center in the vehicle width direction between the left and right rear wheels.
  • the transmission 2b is arranged adjacent to the front side of the vehicle of the differential 2c
  • the motor 2a is arranged on the left side of the transmission 2b in the vehicle width direction
  • the high voltage component 2d is arranged above the motor 2a. . Therefore, the rear wheel drive unit 2 is arranged offset to the left side in the vehicle width direction from the center position in the vehicle width direction of the vehicle.
  • the deion tube 8 is arranged at the rear of the rear wheel drive unit 2. Further, a spare tire 3 is arranged behind the deion tube 8.
  • a bumper reinforcement 15 is fixed to the rear end portions of the pair of left and right side members 5a, 5b. The bumper reinforcement 15 extends in the vehicle width direction and supports a rear bumper (not shown) of the vehicle 1.
  • the vehicle 1 also includes a plurality of cross members extending in the vehicle width direction and connecting the left and right side members 5a and 5b.
  • a first cross member 20 As cross members at the rear of the vehicle, a first cross member 20, a second cross member 21, and a third cross member 22 are provided in order from the rear side of the vehicle toward the front.
  • the first cross member 20 includes a spare tire carrier 25 that supports the spare tire 3 approximately at the center in the vehicle width direction.
  • the spare tire 3 is arranged so that one side of the spare tire 3 is in contact with the lower surface of the first cross member 20, and the spare tire 3 is arranged so that the axis of the spare tire 3 extends in the vertical direction. That is, as shown in FIG. 2, the spare tire 3 is arranged so that the center line CLta in the width direction extends substantially in the longitudinal direction of the vehicle.
  • the second cross member 21 supports the rear central portion of the rear wheel drive unit 2 in the vehicle width direction via the arm Prm.
  • the second cross member 21 is provided with a stopper 30 (protector) extending downward from the second cross member 21 .
  • the stopper 30 is located in front of the spare tire 3 and behind the rear wheel drive unit 2, has a width of several tens of centimeters in the vehicle width direction, and is positioned so as to overlap the center of the spare tire 3 in the vehicle width direction. It is located in
  • the third cross member 22 supports the upper front side of the rear wheel drive unit 2 via a mount.
  • the positional relationship among the rear wheel drive unit 2, spare tire 3, bumper reinforcement 15, and stopper 30 will be explained using FIG. 2.
  • the bumper reinforcement 15 is located behind the spare tire 3, and is disposed below the center line CLta passing through the center of the vertical width at least on the rear end surface 3a of the spare tire 3, and is located at the rear end surface of the spare tire 3 in the front-rear direction. Overlaps with 3a.
  • the stopper 30 extends downward from the second cross member 21 to near the center line CLta passing through the center position of the vertical width on the front end surface 3b of the spare tire 3, and extends downward from the second cross member 21 to the vicinity of the center line CLta passing through the center position of the vertical width on the front end surface 3b of the spare tire 3 in the front and rear direction. overlaps with Further, the rear surface 30a of the stopper 30 is substantially parallel to the front end surface 3b of the spare tire 3 in the vertical direction.
  • the rear wheel drive unit 2 is located below the center line CLta of the spare tire 3. Furthermore, as shown in FIG. 1, the center line CLtb of the spare tire 3 in the vehicle width direction is wider than the center of the rear wheel drive unit 2 in the vehicle width direction (in this embodiment, the arm Prm, which is the rear mounting position). It is located on the right side (the other side in the vehicle width direction).
  • FIG. 3 is a top view showing the fixing part structure of the spare tire carrier 25 according to the first embodiment.
  • FIG. 4 is a top view showing examples of shapes of bolt holes 45 for fixing the spare tire carrier 25 according to the first embodiment, and shows three patterns (a), (b), and (c).
  • the spare tire carrier 25 is fixed to the first cross member 20 by two fixing bolts 46 spaced apart in the vehicle width direction.
  • the spare tire carrier 25 has a rectangular box shape, for example, and is arranged such that its upper surface abuts the lower surface of the upper wall 20b of the first cross member 20 and is suspended from the first cross member 20 by a fixing bolt 46. There is.
  • the upper wall 20b of the first cross member 20 is provided with two bolt holes 45a and 45b (attachment holes) spaced apart in the vehicle width direction and through which the fixing bolts 46 are passed.
  • the right bolt hole 45a located on the right side in the vehicle width direction is an elongated hole extending toward the front of the vehicle from the normal mounting position of the spare tire carrier 25.
  • the left bolt hole 45b located on the left side in the vehicle width direction is located toward the front of the vehicle from the normal mounting position of the spare tire carrier 25. It is a long hole that extends to the right in the vehicle width direction.
  • the left bolt hole 45b extends further forward of the vehicle than the right bolt hole 45a.
  • the left bolt hole 45b is extended from the normal mounting position of the spare tire carrier 25 to the front of the vehicle by, for example, several centimeters, and the left bolt hole 45b is inclined to the right in the vehicle width direction from the front end toward the front of the vehicle. It may also be formed to extend.
  • the left bolt hole 45b may be formed in an arc shape that bends to the right in the vehicle width direction from the normal mounting position of the spare tire carrier 25 toward the front of the vehicle.
  • the right bolt hole 45a may be configured to be inclined to the right in the vehicle width direction toward the front of the vehicle, as shown in FIG. good. Further, when the left bolt hole 45b is formed in an arc shape, the right bolt hole 45a may be formed in an arc shape that bends toward the front of the vehicle and to the right in the vehicle width direction, similarly to FIG. 4(c). Further, the right bolt hole 45a does not have to be a long hole. That is, of the two bolt holes 45a and 45b, at least the left bolt hole 45b on the side opposite to the rear wheel drive unit 2 is inclined toward the front of the vehicle and extends toward the side opposite to the rear wheel drive unit 2 in the vehicle width direction.
  • the spare tire carrier 25 may be fixed to the rear end portion of the left bolt hole 45b by using an elongated hole.
  • the spare tire 3 is pushed forward by the other vehicle or the bumper reinforcement force 15 at the time of a rear collision.
  • the spare tire carrier 25 that supports the spare tire 3 is fixed to the first cross member 20 by two fixing bolts 46, and a bolt hole 45a provided in the first cross member 20 through which the fixing bolts 46 are passed.
  • the left bolt hole 45b on the left side in the vehicle width direction is an elongated hole that extends toward the front of the vehicle and extends to the right in the vehicle width direction, so the spare tire 3 moves toward the front of the vehicle.
  • the inclined left bolt hole 45b serves as a guide to move the vehicle to the right in the width direction.
  • the left fixing bolt 46 can move forward more easily than the right fixing bolt 46, and the spare tire 3 can be moved to the right side in the vehicle width direction. promote the movement of people. Thereby, even if the spare tire 3 moves forward at the time of a rear collision of the vehicle, it can move to the right side in the vehicle width direction of the rear wheel drive unit 2 and avoid a collision with the rear wheel drive unit 2.
  • the rear wheel drive unit 2 Since the rear wheel drive unit 2 is arranged offset to the left side of the center of the spare tire 3 in the vehicle width direction, even if the spare tire 3 moves significantly forward, the rear wheel drive unit 2 The spare tire 3 moves to the space on the right side in the width direction, and collision with the rear wheel drive unit 2 is avoided.
  • the spare tire 3 that has moved forward comes into contact with the rear surface 30a of the stopper 30, and further forward movement is restricted.
  • the spare tire 3 attempts to move further forward, it moves to the right in the vehicle width direction along the inclined rear surface 30a of the stopper 30. Thereby, collision of the spare tire 3 with the rear wheel drive unit 2 can be avoided.
  • FIG. 5 is a top view showing the fixing part structure of the spare tire carrier 25 according to the second embodiment of the present invention.
  • a first cross member 20 that supports a spare tire carrier 25 is provided with a structure extending in the vehicle width direction and reinforcing the first cross member 20.
  • a plate-shaped reinforcement 50 is provided that joins the upper wall 20b and the lower wall 20a of the first cross member 20.
  • the reinforcement 50 has a reinforcement rear part 50a, a reinforcement slope part 50b, and a reinforcement front part 50c.
  • the reinforcement rear portion 50a is configured to extend in the vehicle width direction at a position behind the left bolt hole 45b and on the left side in the vehicle width direction.
  • the reinforcement inclined portion 50b is configured to be inclined to the right in the vehicle width direction toward the front of the vehicle from the right end in the vehicle width direction of the reinforcement rear portion 50a, and to extend forward from the left bolt hole 45b and to the right side in the vehicle width direction. has been done.
  • the reinforcement front portion 50c is configured to extend rightward in the vehicle width direction from the front end of the reinforcement inclined portion 50b.
  • the bolt holes 45a and 45b for fixing the spare tire carrier 25 are elongated holes as in the first embodiment. At this time, it is preferable that the left bolt hole 45b be formed to extend obliquely along the reinforcement inclined portion 50b.
  • the fixing bolt 46 or a part of the spare tire carrier 25 connected to the fixing bolt 46 is used as a reinforcement.
  • the spare tire 3 comes into contact with the inclined part 50b and moves along the reinforcement inclined part 50b and the inclination of the left bolt hole 45b, along with the fixing bolt 46 and the spare tire carrier 25, toward the front of the vehicle and to the right in the vehicle width direction.
  • the second embodiment may also be provided with the same stopper 30 as in the first embodiment.
  • the present invention is not limited to the above embodiments.
  • the shapes of various parts such as the stopper 30 may be changed as appropriate.
  • Vehicle 2 Rear wheel drive unit (vehicle mounted equipment) 3 Spare tire 5a, 5b Side member 20 First cross member (cross member) 30 Stopper (protector) 45a, 45b Bolt holes (mounting holes) 46 Fixing bolt 50 Reinforcement

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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)

Abstract

La présente invention concerne une structure arrière de véhicule comprenant : une paire d'éléments latéraux droit et gauche (5a) et (5b) d'un véhicule ; un premier élément transversal (20) s'étendant dans la direction de la largeur du véhicule de façon à raccorder les parties arrière de la paire d'éléments latéraux (5a) et (5b) ; une unité d'entraînement de roue arrière (2) disposée à l'avant du premier élément transversal (20) ; et un pneu de secours (3) supporté par le premier élément transversal (20) à l'arrière de l'unité d'entraînement de roue arrière (2), l'unité d'entraînement de roue arrière (2) étant positionnée sur le côté gauche dans la direction de la largeur du véhicule par rapport au centre du pneu de secours (3), le premier élément transversal étant pourvu de trous de boulon (45a) et (45b) pour fixer un support de pneu de secours (25) qui sont séparés dans la direction de la largeur du véhicule, et le trou de boulon gauche (45b) sur le côté gauche du véhicule étant un trou long qui est incliné vers l'autre côté dans la direction de la largeur du véhicule vers l'avant du véhicule.
PCT/JP2023/025742 2022-07-14 2023-07-12 Structure arrière de véhicule WO2024014481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022112862 2022-07-14
JP2022-112862 2022-07-14

Publications (1)

Publication Number Publication Date
WO2024014481A1 true WO2024014481A1 (fr) 2024-01-18

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PCT/JP2023/025742 WO2024014481A1 (fr) 2022-07-14 2023-07-12 Structure arrière de véhicule

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008143370A (ja) * 2006-12-11 2008-06-26 Nissan Motor Co Ltd 車両のスペアタイヤハンガー
JP2012140055A (ja) * 2010-12-28 2012-07-26 Suzuki Motor Corp 電動車両のモータマウント構造
JP2017141719A (ja) * 2016-02-09 2017-08-17 三菱自動車工業株式会社 車両のキャニスタおよび大気連通配管の配置構造
JP2018043655A (ja) * 2016-09-15 2018-03-22 三菱自動車工業株式会社 スペアタイヤ脱落防止装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008143370A (ja) * 2006-12-11 2008-06-26 Nissan Motor Co Ltd 車両のスペアタイヤハンガー
JP2012140055A (ja) * 2010-12-28 2012-07-26 Suzuki Motor Corp 電動車両のモータマウント構造
JP2017141719A (ja) * 2016-02-09 2017-08-17 三菱自動車工業株式会社 車両のキャニスタおよび大気連通配管の配置構造
JP2018043655A (ja) * 2016-09-15 2018-03-22 三菱自動車工業株式会社 スペアタイヤ脱落防止装置

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