WO2015029550A1 - Structure de montage de suspension arrière pour véhicule - Google Patents

Structure de montage de suspension arrière pour véhicule Download PDF

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Publication number
WO2015029550A1
WO2015029550A1 PCT/JP2014/065921 JP2014065921W WO2015029550A1 WO 2015029550 A1 WO2015029550 A1 WO 2015029550A1 JP 2014065921 W JP2014065921 W JP 2014065921W WO 2015029550 A1 WO2015029550 A1 WO 2015029550A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
portions
suspension
vehicle body
connecting portions
Prior art date
Application number
PCT/JP2014/065921
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English (en)
Japanese (ja)
Inventor
隼太 鈴木
Original Assignee
本田技研工業株式会社
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Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2015534046A priority Critical patent/JP6074510B2/ja
Publication of WO2015029550A1 publication Critical patent/WO2015029550A1/fr

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051—Trailing arm twist beam axles
    • B60G21/052—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/20—Semi-rigid axle suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms

Definitions

  • the present invention relates to an improved technique for a vehicle rear suspension mounting structure.
  • left and right rear frames extending in the longitudinal direction of the vehicle body are provided at the rear of the vehicle body.
  • a vertical plate-like rear end panel is provided between the rear ends of the left and right rear frames.
  • the left and right rear frames are provided with left and right rear wheel houses positioned in front of the rear end panel.
  • the left and right rear wheel houses and the left and right rear frames are connected by a reinforcing rod extending in the vehicle width direction.
  • a central portion of the reinforcing rod in the vehicle width direction is attached to the rear end panel.
  • An object of the present invention is to provide a technique capable of enhancing the rigidity of a vehicle body including a rear suspension mounting portion.
  • a vehicle rear suspension mounting structure for mounting a rear suspension for suspending left and right rear wheels to a vehicle body, left and right for connecting the rear suspension provided on the vehicle body.
  • Suspension connecting portions, and reinforcing rods extending in the vehicle width direction and having both ends attached to the left and right suspension connecting portions, and a center portion in the vehicle width direction of the reinforcing rods are attached to the vehicle body.
  • a vehicle rear suspension mounting structure is provided.
  • the central portion in the vehicle width direction of the reinforcing rod is attached to a cross member extending in the vehicle width direction in the vehicle body.
  • the rear suspension includes left and right trailing arms in which the left and right rear wheels are incorporated in a rear end portion, and the left and right suspensions are connected to each other by the reinforcing rods.
  • the front ends of the left and right trailing arms in the rear suspension are connected to the connecting portion so as to be able to swing up and down.
  • the rear suspension is a torsion beam suspension in which the left and right trailing arms are connected to each other by a torsion beam.
  • the left and right suspension coupling portions include left and right outer coupling portions positioned on the outer side in the vehicle width direction with the front end portions of the left and right trailing arms interposed therebetween, and the vehicle width.
  • the left and right inner connecting portions are located on the inner side in the direction, and both end portions of the reinforcing rod are attached to the left and right inner connecting portions in the left and right suspension connecting portions.
  • both ends of the reinforcing rod are attached to lower ends of the left and right inner connecting portions.
  • the middle part of the left and right inner connecting parts together with the left and right outer connecting parts, supports the front end parts of the left and right trailing arms so as to swing up and down.
  • the intermediate portion of the left and right inner connecting portions sandwiches the front end portions of the left and right trailing arms by the left and right inner connecting portions and the left and right outer connecting portions.
  • it is inclined inward in the vehicle width direction with respect to the left and right outer connecting portions so as to be substantially parallel to the left and right outer connecting portions.
  • the inner surfaces in the vehicle width direction of the upper end portions of the left and right inner connecting portions are joined to the vehicle body by left and right reinforcing members.
  • the vehicle body includes a reinforcing member side cross member that is positioned in the vicinity of the left and right reinforcing members and extends in the vehicle width direction, and the left and right reinforcing members are the vehicle body. Of these, the reinforcing member side cross member is joined.
  • the left and right outer connecting portions and the left and right inner connecting portions are connected by a reinforcing stay.
  • the left and right suspension connecting portions for connecting the rear suspension are provided on the vehicle body.
  • the left and right suspension connecting portions are connected to each other by a reinforcing rod extending in the vehicle width direction.
  • the central portion of the reinforcing rod in the vehicle width direction is attached to the vehicle body.
  • the left and right suspension coupling portions are reinforced by the reinforcing rods, thereby increasing rigidity (particularly bending rigidity and torsional rigidity).
  • the road surface reaction force transmitted from the road surface to the left and right rear wheels while the vehicle is traveling is transmitted to the left and right suspension connecting portions via the rear suspension.
  • the left and right suspension coupling parts and the vicinity of the left and right suspension coupling parts in the vehicle body are reinforced by reinforcing rods, so that torsion and vibration can be suppressed even if a strong road surface reaction force is applied. Can do. Therefore, the driving performance of the vehicle can be improved. In this way, the rigidity of the entire vehicle body including the rear suspension mounting portion can be increased.
  • both end portions of the reinforcing rod are attached to the left and right suspension connecting portions, and the center portion of the reinforcing rod in the vehicle width direction is attached to the vehicle body.
  • the road surface reaction force is input from the road surface to the left and right rear wheels while the vehicle is running, for example, when turning, the left road surface reaction force or the right road surface reaction force is input to the left and right wheels.
  • a force that pushes the reinforcing rod in the axial direction and a pulling force act on the reinforcing rod.
  • the force that pushes the vehicle body upward and the force that pulls the vehicle body downward in the central portion. can be offset. Therefore, the input of the road surface reaction force (load) from the reinforcing rod to the vehicle body can be minimized.
  • the vehicle body can be sufficiently used for the load input from the wheel without special reinforcement in the vicinity of the reinforcing rod and the mounting portion of the vehicle body. High strength can be ensured.
  • the center part in the vehicle width direction of the reinforcing rod connecting the left and right suspension connecting parts is attached to a cross member which is a strength member of the vehicle body. For this reason, the road surface reaction force transmitted from the left and right suspension connecting portions to the reinforcing rod can be distributed to the cross member. Therefore, the left and right suspension coupling portions can further suppress torsion and vibration even when receiving a strong road surface reaction force.
  • the rear suspension is a so-called trailing arm type suspension including left and right trailing arms in which left and right rear wheels are incorporated in a rear end portion.
  • the swing center of the trailing arm is offset forward from the axle of the rear wheel.
  • Such a trailing arm type suspension tends to be more disadvantageous than the link type suspension in increasing the torsional rigidity of the left and right suspension connecting portions due to the road surface reaction force and the effect of suppressing vehicle body vibration.
  • the front end portions of the left and right trailing arms are connected to the left and right suspension connecting portions connected to each other by the reinforcing rods so as to be swingable up and down.
  • the trailing arm type suspension it is possible to effectively increase the torsional rigidity of the left and right suspension coupling portions and to effectively suppress vehicle body vibration. Therefore, the driving performance of the vehicle can be improved.
  • the rigidity of the entire vehicle body is also increased.
  • the left and right trailing arms are connected by the torsion beam. That is, the rear suspension is a so-called torsion beam suspension.
  • the torsion beam suspension tends to displace the left and right trailing arms in opposite directions.
  • external forces interlocked with each other act on the left and right suspension coupling portions.
  • the front end portions of the left and right trailing arms are connected to the left and right suspension connecting portions connected to each other by the reinforcing rods so as to be swingable up and down.
  • the trailing arm type suspension it is possible to effectively increase the torsional rigidity of the left and right suspension coupling portions and to effectively suppress vehicle body vibration. Therefore, the driving performance of the vehicle can be improved.
  • the rigidity of the entire vehicle body is also increased.
  • the left and right suspension coupling portions are respectively composed of left and right outer coupling portions and left and right inner coupling portions with the front end portions of the left and right trailing arms interposed therebetween. Both ends of the reinforcing rod are attached to the left and right inner connecting portions of the left and right suspension connecting portions.
  • the front end portions of the left and right trailing arms are connected to the left and right inner connecting portions connected to each other by the reinforcing rods so as to be able to swing up and down. For this reason, in the trailing arm type suspension, it is possible to effectively increase the torsional rigidity of the left and right suspension coupling portions and to effectively suppress vehicle body vibration.
  • the upper ends of the left and right inner connecting portions are joined to the vehicle body.
  • the lower end portions of the left and right inner connecting portions are sufficiently supported by the vehicle body by the reinforcing rod.
  • the middle part of the left and right inner connecting parts that are sufficiently supported by the upper and lower end parts, together with the left and right outer connecting parts are supported so that they can swing up and down across the front end parts of the left and right trailing arms. is doing.
  • the road surface reaction force acting on the middle part of the left and right inner connecting parts from the front end part of the left and right trailing arms is reliably and sufficiently received by the upper end part and the lower end part and distributed to other parts of the vehicle body. And can be fully absorbed.
  • the intermediate portion of the left and right inner connecting portions is located in the vehicle width direction with respect to the left and right outer connecting portions. It is leaning towards.
  • the upper ends of the left and right inner connecting portions are joined to the vehicle body.
  • the lower end portions of the left and right inner connecting portions are open relative to the left and right outer connecting portions than the intermediate portion.
  • the reinforcing rods may not be assembled to the lower ends of the left and right inner connecting portions. Therefore, the front end portions of the left and right trailing arms can be assembled easily and accurately between the left and right inner connecting portions and the left and right outer connecting portions.
  • the intermediate portion of the left and right inner connecting portions is substantially parallel to the left and right outer connecting portions.
  • the inner surfaces in the vehicle width direction of the upper ends of the left and right inner connecting portions are joined to the vehicle body by the left and right reinforcing members.
  • the left and right inner connecting portions have lower end portions attached to the vehicle body by reinforcing rods and upper end portions joined to the vehicle body by left and right reinforcing members, so that the intermediate portion has high rigidity. For this reason, the left and right suspension coupling portions can sufficiently support the road surface reaction force received from the front end portions of the left and right trailing arms.
  • the left and right reinforcing members are joined to the reinforcing member side cross member that is positioned in the vicinity of the left and right reinforcing members and extends in the vehicle width direction.
  • the reinforcing member-side cross member is a kind of strength member of the vehicle body.
  • the upper ends of the left and right inner connecting portions are sufficiently fixed to the reinforcing member side cross member by the left and right reinforcing members.
  • the lower end portions of the left and right inner connecting portions are sufficiently fixed to the vehicle body by the reinforcing rod. Therefore, sufficient rigidity of the left and right reinforcing members can be ensured.
  • the rigidity of the entire left and right suspension connecting portions is increased, so that even when a strong road surface reaction force is applied, torsion and vibration can be further suppressed.
  • the left and right outer connecting portions and the left and right inner connecting portions are connected by the reinforcing stay.
  • the rigidity of the entire left and right suspension coupling portions is increased.
  • the left and right outer coupling portions and the left and right inner coupling portions can further suppress the occurrence of twisting and vibration with each other. .
  • FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.
  • FIG. 4 is a perspective view of the left suspension coupling portion shown in FIG. 3 as viewed from the left side.
  • FIG. 6 is a perspective view of the left suspension coupling portion shown in FIG. 5 as viewed from the vehicle width center side.
  • FIG. 7 is a perspective view of a configuration in which an inner coupling portion is removed from the left suspension coupling portion shown in FIG. 6.
  • FIG. 2 is a perspective view of a configuration in which left and right inner connecting portions shown in FIG. 1 are connected by a reinforcing stay. It is the figure which expanded the structure which connected the reinforcement stay shown by FIG. 8 to the 1st cross member.
  • FIG. 5 is an explanatory diagram showing a procedure for inserting the front end portion of the left trailing arm from below into the left suspension connecting portion shown in FIG. 4. It is explanatory drawing which shows the procedure which fastens the front-end part of a left trailing arm to a left suspension connection part shown by FIG. 10 with a support volt
  • FIG. 13 is an explanatory diagram illustrating a state in which a front end portion of a left trailing arm and a reinforcing rod are assembled to the left suspension coupling portion illustrated in FIG. 12.
  • a vehicle body 11 of a vehicle 10 such as a passenger car is formed of a monocoque body and is substantially left and right with respect to a vehicle width center line CL that extends in the vehicle longitudinal direction through the center of the vehicle 10 in the vehicle width direction. It is formed symmetrically.
  • the vehicle body 11 includes left and right side sills 21, 21, left and right rear side frames 22, 22, a first cross member 23, a second cross member 24, and a floor panel 25 at the lower part of the rear half.
  • the left and right side sills 21 and 21 are located in the front-rear direction center of the vehicle body 11 and on both sides in the vehicle width direction, and extend in the vehicle body front-rear direction.
  • the left and right rear side frames 22, 22 extend further rearward after curving from the rear ends of the left and right side sills 21, 21 toward the vehicle width center side. That is, the left and right rear side frames 22 and 22 are positioned on both sides in the vehicle width direction of the rear portion of the vehicle body 11 and extend in the vehicle body longitudinal direction.
  • the first cross member 23 extends in the vehicle width direction and connects the front end portions of the left and right rear side frames 22, 22.
  • the first cross member 23 is formed in a substantially hat-shaped cross section with the top opened when viewed from the vehicle width direction.
  • the second cross member 24 is a member extending in the vehicle width direction, and includes a structure that connects the rear end portions of the left and right side sills 21 and 21. Further, the second cross member 24 includes a member that extends in the vehicle width direction in order to increase the strength of the floor panel 25, a so-called floor panel ridge line portion.
  • the “floor panel ridge line portion” is formed in a cross section bent in the vehicle body up-down direction or the front-rear direction, thereby having a ridge line at each bent corner. The ridge line portion is highly rigid, and the strength of the floor panel 25 can be increased.
  • the floor panel 25 is continuously stretched (provided) between the left and right side sills 21 and 21 and between the left and right rear side frames 22 and 22, and is supported by the first and second cross members 23 and 24. Forming the lower surface of the chamber;
  • a rear suspension 30 for a vehicle for suspending left and right rear wheels 42 and 42 is attached to the rear portion of the vehicle body 11.
  • the rear suspension 30 comprises a torsion beam suspension comprising left and right trailing arms 31 and 31 extending in the vehicle longitudinal direction and a torsion beam 32 extending in the vehicle width direction and connecting the left and right trailing arms 31 and 31. It is combined in a substantially H shape when viewed from the bottom.
  • the front end portions 33 of the left and right trailing arms 31 are connected to the vehicle body 11 so as to be able to swing up and down.
  • the front end 33 of the left trailing arm 31 includes a substantially horizontal inner cylinder 34, an outer cylinder 35 surrounding the inner cylinder 34, the inner cylinder 34, and the outer cylinder 35.
  • a swing base end portion (supported portion) composed of an elastic body 36 such as a rubber connecting the two. Since the front end 33 of the right trailing arm 31 has the same configuration as the front end 33 of the left trailing arm 31, the description thereof is omitted.
  • left and right rear wheels 42, 42 are incorporated in the rear end portions 41, 41 of the left and right trailing arms 31, 31. That is, the rear end portions 41 and 41 are swing front end portions for attaching the left and right rear wheels 42 and 42 rotatably.
  • Left and right spring receiving portions 43 and 43 and left and right damper connecting portions 44 and 44 are formed at intermediate portions of the left and right trailing arms 31 and 31, respectively.
  • the buffer structure of the left trailing arm 31 is as follows. That is, as shown in FIG. 2, the left spring receiving portion 43 receives the lower end portion of the buffering left spring 45.
  • the left damper connecting portion 44 is connected to the lower end portion of the left damper 46 for buffering.
  • the upper end portion of the left spring 45 and the upper end portion of the left damper 46 are supported by the upper portion of the vehicle body 11 (see FIG. 1). Since the buffer structure of the right trailing arm 31 is the same as the buffer structure of the left trailing arm 31, description thereof is omitted.
  • the vehicle body 11 includes left and right suspension connection portions 50 and 50 for connecting the rear suspension 30. That is, the front end portions 33 and 33 of the left and right trailing arms 31 and 31 are connected to the left and right suspension connecting portions 50 and 50 provided on the vehicle body 11 so as to be able to swing up and down.
  • the left and right suspension connecting portions 50 and 50 are arranged so that the left and right outer connecting portions 51 and 51 located on the outer side in the vehicle width direction sandwich the front end portions 33 and 33 of the left and right trailing arms 31 and 31, respectively. It consists of left and right inner connecting portions 61, 61 located inside in the direction.
  • the left suspension connecting portion 50 will be described in detail. Since the right suspension coupling portion 50 has the same configuration as the left suspension coupling portion 50, the description thereof is omitted.
  • a left extension 26 extends from the left side to the vehicle width direction outside at the front end of the left rear side frame 22.
  • the left outer connecting portion 51 is a vertical plate-like member extending downward from the outer end of the left extending portion 26 in the vehicle width direction, and the plate surface is generally oriented in the vehicle width direction. When viewed from below (see FIG. 1), the left outer connecting portion 51 is inclined inward in the vehicle width direction toward the rear of the vehicle body 11.
  • the left inner connecting portion 61 is a vertical plate-like member, and the plate surface faces the inner surface of the left outer connecting portion 51.
  • An upper end portion 62 of the left inner connecting portion 61 is joined to the vehicle body 11. That is, in the front end portion of the left rear side frame 22, the vehicle width direction inner surface 22a is overlapped and joined from the vehicle width center side.
  • the left outer connecting portion 51 and the left inner connecting portion 61 are connected by a left reinforcing stay 70.
  • the left reinforcing stay 70 is a bent product of a plate material, and is elongated in the vehicle width direction.
  • the left reinforcing stay 70 is formed with side flanges 71 and 72 at both ends in the vehicle width direction and an upper flange 73 at the upper end.
  • the side flanges 71 and 72 are joined to the upper end portion 52 of the left outer connecting portion 51 and the upper end portion 62 of the left inner connecting portion 61, respectively.
  • the upper flange 73 is joined to the lower surface of the left extension 26.
  • the inner surface 62a in the vehicle width direction of the upper end portion 62 of the left inner connecting portion 61 is joined to the vehicle body 11 by the left reinforcing member 80.
  • the second cross member 24 is located in the vicinity of the left reinforcing member 80.
  • the left reinforcing member 80 is joined to the second cross member 24 in the vehicle body 11. More specifically, the left reinforcing member 80 is a plate-shaped bent product, and is formed between the inner surface 62a in the vehicle width direction of the upper end 62 of the left inner connecting portion 61 and the rear surface of the second cross member 24. Located at the corner and joined to both. As a result, the upper end portion 62 of the left inner connecting portion 61 can be reinforced by the left reinforcing member 80.
  • the second cross member 24 is referred to as “reinforcing member side cross member 24” as appropriate.
  • the intermediate portions 53, 63 that is, the substantially intermediate portion in the height direction in the left outer connecting portion 51 and the left inner connecting portion 61, are the left trailing arm 31.
  • This is a support portion for supporting the front end portion 33 (swing base end portion 33).
  • the intermediate portions 53 and 63 are supported by sandwiching the front end portion 33 of the trailing arm 31, and are thus parallel to each other with the front end portion 33 being sandwiched.
  • penetrating support holes 54 and 64 are formed in each of the intermediate portions 53 and 63.
  • the front end portion 33 of the left trailing arm 31 is connected to each of the left outer connecting portion 51 and the left inner connecting portion 61 by a supporting bolt 37 and a nut 38 through the inner cylinder 34 and supporting holes 54 and 64. Supported by the intermediate portions 53 and 63. That is, the intermediate portion 63 of the left inner connecting portion 61 is supported so as to be able to swing up and down with the left outer connecting portion 51 sandwiching the front end portion 33 of the left trailing arm 31.
  • the vehicle body 11 includes one reinforcing rod 90.
  • the reinforcing rod 90 is an elongated member extending in the vehicle width direction, and is constituted by a pipe, for example. Both end portions 91 and 91 of the reinforcing rod 90 are attached to lower end portions 65 and 65 of the left and right inner connecting portions 61 and 61 among the left and right suspension connecting portions 50 and 50. As a result, the left and right suspension connecting portions 50 and 50 are connected to each other by the reinforcing rod 90.
  • connection configuration of the reinforcing rod 90 to the left suspension connection portion 50 will be described in detail. Since the connection configuration of the reinforcing rod 90 with respect to the right suspension connection portion 50 is the same as the left connection configuration, the description thereof is omitted.
  • the lower end 65 of the left inner connecting portion 61 is composed of a lower end flange formed by being edge-folded inward in the vehicle width direction.
  • the left end portion 91 of the reinforcing rod 90 is formed in a flat shape, is superimposed on the lower end flange 65 (lower end portion 65) from below, and is attached by a bolt 92.
  • the left inner connecting portion 61 has the upper end portion 62 fixed to the vehicle body 11 and the lower end portion 65 supported by the reinforcing rod 90.
  • the first cross member 23 is located behind the left and right suspension coupling portions 50, 50.
  • a central flange 94 extends rearward from the vehicle width direction central portion 93 of the reinforcing rod 90.
  • the central flange 94 overlaps the first cross member 23 from below and is attached by bolts 95.
  • the vehicle width direction central portion 93 of the reinforcing rod 90 is attached to the first cross member 23.
  • the attachment position for attaching the vehicle width direction central portion 93 to the first cross member 23 with respect to the connection position for connecting the both end portions 91, 91 to the left and right suspension connection portions 50, 50. Is located behind the vehicle body and above the vehicle body.
  • the overall shape of the reinforcing rod 90 is generally V-shaped with both sides open from the vehicle width direction central portion 93 toward the front lower side of the vehicle body 11.
  • left and right suspension coupling portions 50, 50 for coupling the rear suspension 30 are provided on the vehicle body 11.
  • the left and right suspension connection portions 50 are connected to each other by a reinforcing rod 90 extending in the vehicle width direction.
  • the vehicle width direction center portion 93 of the reinforcing rod 90 is attached to the vehicle body 11.
  • the left and right suspension connecting portions 50 and 50 are reinforced by the reinforcing rod 90, so that rigidity (particularly bending rigidity and torsional rigidity) is increased.
  • the road surface reaction force transmitted from the road surface to the left and right rear wheels 42, 42 is transmitted to the left and right suspension connecting portions 50, 50 via the rear suspension 30.
  • the left and right suspension coupling portions 50 and 50 and the vicinity of the left and right suspension coupling portions 50 and 50 in the vehicle body 11 are reinforced by the reinforcing rod 90, even if a strong road surface reaction force is received. , Torsion and vibration can be suppressed. Therefore, the driving performance of the vehicle 10 can be improved. In this way, the rigidity of the entire vehicle body 11 including the rear suspension mounting portion can be increased.
  • the left road surface reaction force or the right road surface reaction force is When input is made to the left and right wheels 42, 42, a force that pushes the reinforcing rod 90 in the axial direction and a pulling force act on the reinforcing rod 90.
  • the vehicle width direction central portion 93 of the reinforcing rod 90 is attached to the vehicle body 11, whereby the force that pushes the vehicle body 11 upward and the vehicle body 11 downward in the central portion 93.
  • the pulling force can be offset.
  • the input of the road surface reaction force (load) from the reinforcing rod 90 to the vehicle body 11 can be minimized.
  • the load input to the vehicle body 11 can be reduced. Therefore, the load from the wheels 42 and 42 can be input without special reinforcement in the vicinity of the reinforcing rod 90 and the attachment portion of the vehicle body 11.
  • sufficient strength of the vehicle body 11 can be ensured.
  • a vehicle width direction central portion 93 of the reinforcing rod 90 that connects the left and right suspension connecting portions 50, 50 is attached to the first cross member 23 that is a strength member of the vehicle body 11. Yes. Therefore, the road surface reaction force transmitted from the left and right suspension coupling portions 50, 50 to the reinforcing rod 90 can be distributed to the first cross member 23. Accordingly, the left and right suspension coupling portions 50, 50 can further suppress torsion and vibration even when receiving a strong road surface reaction force.
  • the rear suspension 30 includes a so-called trailing arm type suspension including left and right trailing arms 31, 31 in which left and right rear wheels 42, 42 are incorporated in rear end portions 41, 41. It is.
  • the swing center of the trailing arms 31, 31 (the center of the front end portions 33, 33) is offset forward from the axle of the rear wheels 42, 42.
  • Such a trailing arm type suspension 30 is likely to be more disadvantageous than a link type suspension in increasing the torsional rigidity of the left and right suspension coupling portions 50 and 50 due to the road surface reaction force and enhancing the effect of suppressing vehicle body vibration.
  • the front end portions 33 of the left and right trailing arms 31, 31 are connected to the left and right suspension connecting portions 50, 50 connected to each other by the reinforcing rod 90 so as to be swingable up and down.
  • the torsional rigidity of the left and right suspension coupling portions 50, 50 can be effectively increased, and the vehicle body vibration can be effectively suppressed. Therefore, the driving performance of the vehicle 10 can be improved.
  • the rigidity of the entire vehicle body 11 is also increased.
  • the left and right trailing arms 31 are connected to each other by a torsion beam 32. That is, the rear suspension 30 is a so-called torsion beam suspension.
  • the torsion beam suspension 30 tends to be displaced in a direction in which the left and right trailing arms 31 and 31 are opposite to each other. As a result, external forces interlocked with each other act on the left and right suspension coupling portions 50 and 50.
  • the front end portions 33 of the left and right trailing arms 31, 31 are connected to the left and right suspension connecting portions 50, 50 connected to each other by the reinforcing rod 90 so as to be swingable up and down.
  • the torsional rigidity of the left and right suspension coupling portions 50, 50 can be effectively increased, and the vehicle body vibration can be effectively suppressed. Therefore, the driving performance of the vehicle 10 can be improved.
  • the rigidity of the entire vehicle body 11 is also increased.
  • the left and right suspension coupling portions 50, 50 sandwich the front end portions 33, 33 of the left and right trailing arms 31, 31 and the left and right inner coupling portions 61, 61 respectively. It consists of outer connecting parts 51, 51. Both end portions 91, 91 of the reinforcing rod 90 are attached to the left and right inner connecting portions 61, 61 among the left and right suspension connecting portions 50, 50. That is, the front end portions 33 and 33 of the left and right trailing arms 31 and 31 are connected to the left and right inner connecting portions 61 and 61 connected to each other by the reinforcing rod 90 so as to be able to swing up and down. For this reason, in the trailing arm type suspension 30, the torsional rigidity of the left and right suspension coupling portions 50, 50 can be effectively increased, and the vehicle body vibration can be effectively suppressed.
  • the upper end 62 of the left inner connecting portion 61 is joined to the vehicle body 11.
  • the lower end portion 65 of the left inner connecting portion 61 is sufficiently supported by the vehicle body 11 by the reinforcing rod 90.
  • the intermediate portion 63 of the left inner connecting portion 61 that sufficiently supports the upper end portion 62 and the lower end portion 65 together with the left outer connecting portion 51 is the front end portion 33 of the left trailing arm 31. It is supported so that it can swing up and down. For this reason, the road surface reaction force that has acted on the intermediate portion 63 of the left inner connecting portion 61 from the front end portion 33 of the left trailing arm 31 is reliably and sufficiently received by the upper end portion 62 and the lower end portion 65. 11 can be dispersed and sufficiently absorbed in other parts. This also applies to the right inner connecting portion 61, and a description thereof will be omitted.
  • the inner surface 62 a in the vehicle width direction of the upper end 62 of the left inner connecting portion 61 is joined to the vehicle body 11 by the left reinforcing member 80.
  • the lower end portion 65 is attached to the vehicle body 11 by the reinforcing rod 90, and the upper end portion 62 is joined to the vehicle body 11 by the left reinforcing member 80, so that the rigidity of the intermediate portion 63 is high.
  • the left suspension coupling portion 50 can sufficiently support the road surface reaction force received from the front end portion 33 of the left trailing arm 31. This also applies to the right inner connecting portion 61, and a description thereof will be omitted.
  • the left reinforcing member 80 is positioned in the vicinity of the left reinforcing member 80 and extends in the vehicle width direction. It is joined to the cross member 24).
  • the reinforcing member-side cross member 24 is a kind of strength member of the vehicle body 11.
  • the upper end portion 62 of the left inner connecting portion 61 is sufficiently fixed to the reinforcing member side cross member 24 by the left reinforcing member 80.
  • the lower end portion 65 of the left inner connecting portion 61 is sufficiently fixed to the vehicle body by the reinforcing rod 90. Therefore, the rigidity of the left reinforcing member 80 can be sufficiently ensured.
  • the left outer connecting portion 51 and the left inner connecting portion 61 are connected by a reinforcing stay 70.
  • the rigidity of the entire left suspension coupling portion 50 is increased.
  • the left outer coupling portion 51 and the left and right inner coupling portions 61 further suppress the occurrence of twisting and vibration. be able to.
  • the intermediate portion 63 of the left inner connecting portion 61 sandwiches the front end portion 33 of the left trailing arm 31 between the left outer connecting portion 51 and the left inner connecting portion 61.
  • the left outer connecting portion 51 is inclined inward in the vehicle width direction so as to be substantially parallel to the left outer connecting portion 51.
  • the assembling direction of the left front end portion 33 with respect to the left suspension connecting portion 50 is the upward direction from the lower side of the vehicle body 11. For this reason, the left inner connecting portion 61 is inclined with respect to the left outer connecting portion 51 in a direction in which the lower end portion 65 is separated from the upper end portion 62.
  • a parallel surface Fs parallel to the inner surface 53a of the intermediate portion 53 of the left outer connecting portion 51 is taken as a reference surface.
  • the intermediate portion 63 of the left inner connecting portion 61 is inclined in a direction away from the reference plane Fs (inner side in the vehicle width direction) from the upper end toward the lower side of the vehicle body. That is, the intermediate portion 63 is inclined by the inclination angle ⁇ with respect to the reference surface Fs (parallel surface Fs).
  • the inclination angle ⁇ is set in a range of 1 ° to 3 °, for example.
  • the left front end portion 33 is inserted into the left suspension connecting portion 50 from below and aligned.
  • the support bolt 37 is passed through the support holes 54 and 64 and the inner cylinder 34 and tightened with a nut 38 as shown in FIG.
  • the front end portion 33 of the left trailing arm 31 is sandwiched between the left outer connecting portion 51 and the left inner connecting portion 61.
  • the intermediate portion 63 of the left inner connecting portion 61 is substantially parallel to the left outer connecting portion 51.
  • the left end 91 of the reinforcing rod 90 is attached to the lower end 65 (lower end flange 65) of the left inner connecting portion 61 with a bolt 92.
  • the result is shown in FIG.
  • the flange 94 of the center portion 93 in the vehicle width direction of the reinforcing rod 90 is attached to the first cross member 23 with bolts 95. This completes the operation of assembling the front end portion 33 of the left trailing arm 31 and the reinforcing rod 90 with respect to the left suspension connecting portion 50.
  • the intermediate portion 63 of the left inner connection portion 61 has a vehicle width relative to the left outer connection portion 51. Tilt inward. An upper end portion 62 of the left inner connecting portion 61 is joined to the vehicle body 11. As a result, the lower end portion 65 of the left inner connecting portion 61 is opener than the intermediate portion 63 with respect to the left outer connecting portion 51. At this time, the reinforcing rod 90 may not be assembled to the lower end portion 65 of the left inner connecting portion 61. For this reason, the front end portion 33 of the left trailing arm 31 can be easily and accurately assembled between the left outer connecting portion 51 and the left inner connecting portion 61.
  • the intermediate portion 63 of the left inner connecting portion 61 is used as the left outer connecting portion 51. It can be made substantially parallel to.
  • the reinforcing rod 90 is assembled to the lower end portion 65 of the left inner connecting portion 61 so that the lower end portion 65 of the left inner connecting portion 61 can be sufficiently supported on the vehicle body by the reinforcing rod 90. it can. As a result, the rigidity of the left suspension coupling portion 50 can be ensured. This also applies to the right inner connecting portion 61, and a description thereof will be omitted.
  • the ease of assembling the front end portions 33, 33 of the left and right trailing arms 31, 31 with respect to the left and right suspension connecting portions 50, 50 and the rigidity of the left and right suspension connecting portions 50, 50 are improved. It is possible to satisfy both of these requirements.
  • the vehicle rear suspension mounting structure of the present invention is suitable for use in the vehicle body 11 of a vehicle 10 such as a passenger car.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne une structure de montage de suspension arrière pour un véhicule, qui est utilisée pour monter une suspension arrière (30) sur le châssis de véhicule (11), la suspension arrière (30) portant les roues arrière gauche et droite (42, 42). Le châssis de véhicule comprend : des sections de raccordement de suspension gauche et droite (50, 50) auxquelles est reliée la suspension arrière (30) ; et une tige de renforcement (90) s'étendant dans la direction de largeur du véhicule. Les extrémités opposées (91, 91) de la tige de renforcement sont montées sur les sections de raccordement de suspension gauche et droite. La section centrale (93) de la tige de renforcement dans la direction de largeur du véhicule est montée sur un élément transversal (23) du châssis de véhicule, l'élément transversal (23) s'étendant dans la direction de largeur du véhicule.
PCT/JP2014/065921 2013-08-30 2014-06-16 Structure de montage de suspension arrière pour véhicule WO2015029550A1 (fr)

Priority Applications (1)

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JP2015534046A JP6074510B2 (ja) 2013-08-30 2014-06-16 車両用リヤサスペンション取付構造の組付方法

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JP2013178923 2013-08-30

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016181530A1 (fr) * 2015-05-13 2016-11-17 本田技研工業株式会社 Structure de fixation de suspension arrière de véhicule
JP2019073209A (ja) * 2017-10-18 2019-05-16 ダイハツ工業株式会社 リヤサスペンションの補強構造
JP2021008250A (ja) * 2019-07-03 2021-01-28 本田技研工業株式会社 車両用リアトレーリングアーム支持構造
US11247525B2 (en) * 2019-01-09 2022-02-15 Hyundai Motor Company Trailing arm mounting bracket for vehicle
US20220305871A1 (en) * 2021-03-25 2022-09-29 Hyundai Motor Company Vehicle Body Frame Using Component Integration Type Rear Lower
CN115320711A (zh) * 2022-08-22 2022-11-11 开沃新能源汽车集团股份有限公司 一种纯电动线控底盘

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS6015005U (ja) * 1983-07-11 1985-02-01 三菱自動車工業株式会社 リヤサスペンシヨンの取付構造
JPH07164845A (ja) * 1993-12-14 1995-06-27 Nissan Motor Co Ltd リヤサスペンションのリンク取付部構造
JPH11301511A (ja) * 1998-04-15 1999-11-02 Daihatsu Motor Co Ltd サスペンション部材支持装置
JP2002362427A (ja) * 2001-06-05 2002-12-18 Honda Motor Co Ltd 後部車体構造
JP2008247139A (ja) * 2007-03-29 2008-10-16 Daihatsu Motor Co Ltd 自動車の車体後部構造
JP2010013057A (ja) * 2008-07-07 2010-01-21 Honda Motor Co Ltd 車体後部構造
JP2012041010A (ja) * 2010-08-23 2012-03-01 Mazda Motor Corp 電気自動車の車両後部構造

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015005U (ja) * 1983-07-11 1985-02-01 三菱自動車工業株式会社 リヤサスペンシヨンの取付構造
JPH07164845A (ja) * 1993-12-14 1995-06-27 Nissan Motor Co Ltd リヤサスペンションのリンク取付部構造
JPH11301511A (ja) * 1998-04-15 1999-11-02 Daihatsu Motor Co Ltd サスペンション部材支持装置
JP2002362427A (ja) * 2001-06-05 2002-12-18 Honda Motor Co Ltd 後部車体構造
JP2008247139A (ja) * 2007-03-29 2008-10-16 Daihatsu Motor Co Ltd 自動車の車体後部構造
JP2010013057A (ja) * 2008-07-07 2010-01-21 Honda Motor Co Ltd 車体後部構造
JP2012041010A (ja) * 2010-08-23 2012-03-01 Mazda Motor Corp 電気自動車の車両後部構造

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016181530A1 (fr) * 2015-05-13 2016-11-17 本田技研工業株式会社 Structure de fixation de suspension arrière de véhicule
JP2019073209A (ja) * 2017-10-18 2019-05-16 ダイハツ工業株式会社 リヤサスペンションの補強構造
US11247525B2 (en) * 2019-01-09 2022-02-15 Hyundai Motor Company Trailing arm mounting bracket for vehicle
JP2021008250A (ja) * 2019-07-03 2021-01-28 本田技研工業株式会社 車両用リアトレーリングアーム支持構造
US20220305871A1 (en) * 2021-03-25 2022-09-29 Hyundai Motor Company Vehicle Body Frame Using Component Integration Type Rear Lower
US11634002B2 (en) * 2021-03-25 2023-04-25 Hyundai Motor Company Vehicle body frame using component integration type rear lower
CN115320711A (zh) * 2022-08-22 2022-11-11 开沃新能源汽车集团股份有限公司 一种纯电动线控底盘

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