WO2016120993A1 - Structure de support d'ensemble moteur - Google Patents

Structure de support d'ensemble moteur Download PDF

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Publication number
WO2016120993A1
WO2016120993A1 PCT/JP2015/052178 JP2015052178W WO2016120993A1 WO 2016120993 A1 WO2016120993 A1 WO 2016120993A1 JP 2015052178 W JP2015052178 W JP 2015052178W WO 2016120993 A1 WO2016120993 A1 WO 2016120993A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
power unit
bracket
torque rod
width direction
Prior art date
Application number
PCT/JP2015/052178
Other languages
English (en)
Japanese (ja)
Inventor
幸宏 濱田
達三 富田
Original Assignee
日産自動車株式会社
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 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to PCT/JP2015/052178 priority Critical patent/WO2016120993A1/fr
Publication of WO2016120993A1 publication Critical patent/WO2016120993A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • 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 power unit support structure provided with a torque rod that suppresses vibration of a power unit.
  • Patent Document 1 As a support structure of a power unit provided with a torque rod, what was indicated in patent documents 1 is known.
  • a bracket for connecting the torque rod and the vehicle body is mounted on the vehicle front side of the strut housing. For this reason, when the power unit receives an impact load from the front of the vehicle and moves backward, the torque rod is stretched, which may hinder the movement of the power unit to the rear of the vehicle.
  • moment generating means is provided at the vehicle body side connecting portion of the torque rod.
  • the moment generating means has a function of bending or breaking the torque rod when the power unit receives an impact load from the front of the vehicle and retreats.
  • an inclined surface is provided at the vehicle body side connection portion of the torque rod, and correspondingly, an insulator interposed between the vehicle body side connection portion of the torque rod and the vehicle body side support shaft is deformed. Component costs are rising.
  • the connector for connecting the torque rod and the vehicle body has plate-like upper and lower portions having surfaces facing each other in the vehicle vertical direction, and the upper part and the lower part in the vehicle width direction are strut housings of the vehicle body It is coupled to the inside of the vehicle width direction.
  • the connector when the vehicle receives an excessive impact load from the front and the power unit retracts, and the impact load is transmitted to the connector through the torque rod, the connector can be easily formed into the plate-like upper and lower portions. To absorb shocks. Since the upper part and the lower part in the vehicle width direction of the connector are connected to the vehicle width direction inward of the strut housing, the torque rod is coupled between the power unit and the vehicle body together with the deformation of the connector in the upper part and the lower part. Stiffening is suppressed and movement of the power unit to the rear of the vehicle is permitted. Since the connector has a simple configuration in which the plate-like upper and lower portions are simply provided, an increase in part cost is suppressed.
  • FIG. 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of a bracket for connecting the torque rod used in the vehicle body structure of FIG. 1 to the vehicle body side, in which (a) shows the upper bracket and the lower bracket combined, (b) shows the upper bracket and the lower The bracket and the disassembled state are shown.
  • FIG. 3 is a plan view showing the vehicle body structure around the torque rod.
  • FIG. 4 is a cross-sectional view taken along line AA of FIG.
  • FIG. 5 is a cross-sectional view taken along the line BB in FIG.
  • FIG. 6 is a front view from the front of the vehicle body showing an example in which a left-right difference is generated in the structure of the dash upper front by the brake master back mounted on the vehicle body structure of FIG.
  • FIG. 1 shows a frame structure of a front portion of a vehicle body provided with a power unit support structure according to an embodiment of the present invention.
  • the arrow FR is at the front of the vehicle body
  • the arrow UPR is at the upper side of the vehicle.
  • Side members 1 and 3 are extended forward and rearward of the vehicle body on both sides in the vehicle width direction of the vehicle body.
  • a suspension member 5 for supporting a suspension or the like (not shown) is provided below the side members 1 and 3.
  • a power unit 11 integrated with the left and right side members 1 and 3 by connecting the engine 7 and the transmission 9 is supported via the left and right mount members 13 and 15.
  • the dash panel 21 includes a dash lower 21L whose lower end is coupled to a floor panel (not shown) and a dash upper 21U whose lower end is coupled to the upper end of the dash lower 21L.
  • the dash lower 21L is inclined along an inclination toward the lower rear of the rear of the side members 1 and 3.
  • a dash upper front 23 as a reinforcing member extending in the vehicle width direction is coupled to the upper engine compartment 17 side of the dash upper 21U.
  • the dash upper front 23 forms a closed cross section with the dash upper 21U, and both ends in the vehicle width direction are respectively coupled to the left and right strut housings 25 and 27 to suppress the collapse of the strut housings 25 and 27.
  • Strut housings 25 and 27 support upper ends of dampers or struts, which are suspension components (not shown), and are integrally provided on the inside of the hood ridge panels 29 and 31.
  • Side members 1 and 3 are coupled to lower portions of the hood ridge panels 29 and 31.
  • the power unit 11 is connected to the rear portion of the suspension member 5 of the vehicle body via the lower torque rod 33 at the lower portion on the vehicle rear side. Further, the power unit 11 is coupled to a strut housing 27 and a dash upper front 23 of the vehicle body via an upper torque rod 35 as a torque rod at an upper portion on the engine 7 side on the right side in the vehicle width direction.
  • the lower torque rod 33 and the upper torque rod 35 suppress the vibration of the power unit 11 when the engine is operating or traveling.
  • the upper torque rod 35 includes a rod portion 35R extending in the longitudinal direction of the vehicle, a power unit side connecting portion 35P on the front side of the vehicle, and a vehicle side connecting portion 35B on the rear side of the vehicle.
  • the power unit side connection portion 35P includes a cylindrical portion having an axis in the vehicle width direction, and is fastened and fixed to the power unit 11 by a bolt (not shown) inserted into the cylindrical portion.
  • An insulator 37 serving as an elastic member is provided between the cylindrical portion and the bolt.
  • the bracket used as the connection member which connects the power unit side connection part 35P and the power unit 11 is abbreviate
  • the vehicle body side connection part 35B is connected with the vehicle body via the bracket 39 as a connection tool.
  • the bracket 39 is entirely formed of a plate-like member, and as shown in FIG. 2, includes an upper bracket 39U and a lower bracket 39L.
  • Upper bracket 39U has a substantially rectangular upper surface 39Ua which is long in the longitudinal direction of the vehicle when viewed from the vertical direction of the vehicle, a side surface 39Ub bent downward from an outer edge of the upper surface 39Ua in the vehicle width direction, and a vehicle of upper surface 39Ua And a rear surface 39Uc bent downward from the rear side edge.
  • the vehicle rear side edge portion of the side surface portion 39Ub and the vehicle width direction outer edge portion of the rear surface portion 39Uc are bent in a continuous state.
  • the bending angle between the side surface portion 39Ub and the rear surface portion 39Uc is an obtuse angle slightly larger than 90 degrees.
  • the vertical length of the rear surface portion 39Uc is shorter than the vertical length of the side surface portion 39Ub.
  • a concave portion 39Ud that is concave upward is formed in the bent portion between the rear surface portion 39Uc and the side surface portion 39Ub, and the vertical length of the bent portion is the back surface portion 39Uc It is shorter than the vertical length of the
  • the upper surface portion 39Ua is provided on the front side of the vehicle with a circular embossed portion 39Ua1 projecting downward corresponding to a position at which the vehicle body side connection portion 35B of the upper torque rod 35 is attached.
  • a bolt insertion hole 39Ua2 for inserting a bolt 41 shown in FIG. 4 is formed at the center of the embossed portion 39Ua1.
  • the stepped portion 39Ua3 is formed so as to be positioned below the portion located rearward of the embossed portion 39Ua1.
  • a flange 39Ua4 that is bent upward is provided at an edge on the vehicle front side and the inner side in the vehicle width direction of the upper surface 39Ua.
  • the upper surface 39Ua of the portion having the flange 39Ua4 is gently curved between the front side of the vehicle and the inner side in the vehicle width direction.
  • the lower bracket 39L has a lower surface 39La substantially equal in length to the upper surface 39Ua of the upper bracket 39U, a side surface 39Lb bent upward from an outer edge of the lower surface 39La in the vehicle width direction, and an upper surface And a rear surface 39Lc bent upward from a vehicle rear side edge of 39Ua.
  • the portion between the vehicle rear side edge of the side surface portion 39Lb and the outer edge of the rear surface portion 39Lc in the vehicle width direction is bent in a continuous state.
  • the bending angle between the side surface portion 39Lb and the rear surface portion 39Lc is an obtuse angle slightly larger than 90 degrees.
  • the vertical length of the rear surface portion 39Lc is longer than the vertical length of the side surface portion 39Lb.
  • a recessed portion 39Ld which is recessed downward is formed in the bent portion between the rear surface portion 39Lc and the side surface portion 39Lb, and the vertical length of the bent portion is shorter than the vertical length of the side surface portion 39Lb .
  • the side surface 39Lb of the lower bracket 39L is located inside the side 39Ub of the upper bracket 39U, and the rear surface 39Lc of the lower bracket 39L is located inside the rear surface 39Uc of the upper bracket 39U.
  • the curved portion of the corner in the vehicle width direction outside of the upper portion of the rear surface portion 39Lc is substantially aligned with the recess 39Ud of the upper bracket 39U.
  • the vehicle front-rear direction length of the side surface portion 39Ub of the upper bracket 39U is shorter than the vehicle front-rear direction length of the side surface portion 39Lb of the lower bracket 39L. Therefore, the edge on the vehicle rear side of the side surface portion 39Ub of the upper bracket 39U is located on the vehicle front side relative to the recess 39Ld of the lower bracket 39L.
  • the lower surface portion 39La of the lower bracket 39L includes a circular embossed portion 39La1 corresponding to the embossed portion 39Ua1 of the upper bracket 39U.
  • the embossed portion 39La1 protrudes upward, and a bolt insertion hole 39La2 for inserting a bolt 41 shown in FIG. 4 is formed at the center.
  • the vehicle front side portion including the embossed portion 39La1 is substantially equal to the upper surface portion 39Ua, and the vehicle rear side portion is shorter than the vehicle front side portion.
  • the portion of the lower surface portion 39La provided with the embossed portion 39La1 is curved corresponding to the circular shape of the embossed portion 39La1.
  • a flange 39La4 that is bent downward is provided on the edge on the vehicle front side and the inner side in the vehicle width direction of the lower surface portion 39La.
  • the upper surface 39Ua of the upper bracket 39U and the lower surface 39La of the lower bracket 39L form plate-like upper and lower portions having surfaces facing each other in the vehicle vertical direction.
  • the vehicle body side connection portion 35B of the upper torque rod 35 is provided with a cylindrical portion whose axis is the vertical direction of the vehicle, and the cylindrical portion is interposed between the upper and lower embossed cylindrical portions 39Ua1 and 39La1 shown in FIG.
  • a bolt 41 shown in FIG. 4 is inserted from the upper portion and fastened to the lower nut 43.
  • the bolt 41 is inserted into the collar 45, and an insulator 47 serving as an elastic member is interposed between the collar 45 and the cylindrical portion.
  • connection structure of the bracket 39 to the vehicle body will be described.
  • the side portions 39Ub and the side portions 39Lb of the upper bracket 39U and the lower bracket 39L in the bracket 39 are curved so that the outer side in the vehicle width direction becomes a concave surface along the longitudinal direction of the vehicle.
  • the curved surface of the side portion 39Ub of the upper bracket 39U is fixed by welding to the upper inner surface of the strut housing 27, as shown in FIG.
  • the rear surface 39Uc of the upper bracket 39U and the rear surface 39Lc of the lower bracket 39L are fixed by welding to the front surface 23a of the dash upper front 23, as shown in FIG.
  • the front surface 23a of the dash upper front 23 is inclined such that the outer side in the vehicle width direction (the strut housing 27) is positioned forward of the vehicle than the inner side in the vehicle width direction.
  • both end portions coupled to the strut housings 25 and 27 are thicker than the central portion, and the cross-sectional area is large.
  • the vehicle receives an impact from the front, and the impact load is transmitted from the power unit 11 to the upper torque rod 35.
  • the load input to the upper torque rod 35 is transmitted to the bracket 39 via the vehicle body side connection portion 35B, the bolt 41, and the like. Since the bracket 39 receives a load at the upper surface 39Ua and the lower surface 39La, the plate-like upper surface 39Ua and the lower surface 39La deform to absorb an impact.
  • the power unit side connecting portion 35P When the upper torque rod 35 receives an impact from the front, the power unit side connecting portion 35P is displaced, for example, so as to move upward, as shown by a two-dot chain line in FIG. At this time, the upper surface portion 39Ua of the bracket 39 is bent and deformed upward to be deformed larger than the lower surface portion 39La. Since the bracket 39 is open at the inner side and the front side in the vehicle width direction, the upper surface portion 39Ua and the lower surface portion 39La are easily deformed.
  • the bracket 39 is formed by bending a plate-like member, and has a simple configuration in which the upper surface portion 39Ua and the lower surface portion 39La are provided as deformation portions, so that an increase in parts cost is suppressed.
  • the outer side in the vehicle width direction of the upper surface portion 39Ua and the lower surface portion 39La of the bracket 39 is connected to the inner side in the vehicle width direction of the strut housing 27.
  • the vehicle body side connection portion 35B is positioned on the inner side in the vehicle width direction of the strut housing 27. Therefore, the upper torque rod 35 is less likely to be tensioned between the power unit 11 and the strut housing 27 and may be tensioned between the power unit 11 and the vehicle body in combination with the deformation of the upper surface 39Ua and the lower surface 39La. Be suppressed.
  • the bracket 39 is open at the inner side in the vehicle width direction opposite to the joint portion with the strut housing 27. Therefore, the upper surface 39Ua and the lower surface 39La are more easily deformed, and the shock absorbing effect is enhanced.
  • the rear side of the bracket 39 in the vehicle longitudinal direction is connected to a dash panel 21 that separates an engine compartment 17 in which the power unit 11 is housed and a compartment 19.
  • the bracket 39 to which the impact load is transmitted from the upper torque rod 35 is sandwiched between the rear dash panel 21 and the upper surface portion 39Ua and the lower surface portion 39La are deformed more reliably to absorb the impact.
  • a dash upper front 23 connecting the left and right strut housings 25 and 27 is attached to an upper portion of the dash panel 21, and a vehicle longitudinal direction rear side of the bracket 39 is coupled to the dash upper front 23.
  • the dash upper front 23 is a reinforcing member which has a closed cross-sectional structure and connects the left and right strut housings 25 and 27 to each other. For this reason, the bracket 39 to which the impact load is transmitted from the upper torque rod 35 is sandwiched between the dash upper front 23 and the upper surface portion 39Ua and the lower surface portion 39La are deformed more reliably to absorb the impact.
  • an upper bracket 39U and a lower bracket 39L each having an upper surface 39Ua and a lower surface 39La, are formed as separate members. Therefore, for example, the rigidity of the lower bracket 39L can be made higher than the rigidity of the upper bracket 39U by, for example, making the thickness of the lower bracket 39L thicker than the thickness of the upper bracket 39U. As a result, the upper surface 39Ua deforms more than the lower surface 39La, and the upper torque rod 35 is easily displaced upward.
  • the upper torque rod 35 Since various components in the engine compartment 17 are mounted below the upper torque rod 35, there is a possibility that the upper torque rod 35 may interfere with various components when displaced downward. Therefore, by adjusting the rigidity of the bracket 39 by the upper surface portion 39Ua and the lower surface portion 39La, the upper torque rod 35 can be displaced upward more reliably.
  • FIG. 6 it is assumed that, for example, a brake master back 49 is attached to the dash panel 21 near the inner side in the vehicle width direction of the strut housing 27.
  • the cross-sectional area of the left end in FIG. 6 is smaller than the cross-sectional area of the right end in FIG. Become.
  • the rigidity of the strut housing 27 on the left side is reduced compared to the strut housing 25 on the right side in the drawing, and the fall suppressing effect is reduced.
  • the bracket 39 to the strut housing 27 and the dash upper front 23, it is possible to suppress the fall of the suppressing effect of the strut housing 27.
  • the bracket 39 by connecting the bracket 39 to the strut housing 27 in such a manner that the upper surface 39Ua and the lower surface 39La are inclined along the longitudinal direction of the vehicle, the rigidity of the strut housing 27 is enhanced. Thereby, the falling of the strut housing 27 can be suppressed.
  • the bracket 39 is coupled to the strut housing 27 and the dash upper front 23, but may be coupled only to the strut housing 27.
  • bracket 39 of the said embodiment comprises the upper bracket 39U which each has upper surface part 39Ua and lower surface part 39La, and the lower bracket 39L by another member, you may form integrally with it, not using another member.
  • bracket 39 may be provided with short upper and lower flanges such as the flange 39Ua4 and the flange 39La4 instead of the side surface 39Ub and the side surface 39Lb, and this flange may be coupled to the strut housing 27.
  • the present invention is applied to a power unit support structure in which a power unit in which an engine and a transmission are coupled is mounted on a vehicle and provided with a torque rod that suppresses vibration of the power unit.
  • Power unit 17 Engine compartment (area where the power unit is housed) 19 compartment 21 dash panel (body) 23 Dash upper front (reinforcement member) 27 Strut housing (vehicle body) 35 Upper torque rod (torque rod) 39 Bracket (connector) 39Ua top bracket top (top) Lower surface of 39La lower bracket (lower part)

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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)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

La structure de support d'ensemble moteur de l'invention est équipée d'une bielle de torsion (35) qui est agencée entre un ensemble moteur (11) installé dans un véhicule, et un corps de véhicule côté arrière de véhicule de cet ensemble moteur (11), et empêche l'oscillation de l'ensemble moteur (11). Un instrument de couplage (39) est agencé sur une partie couplage vis-à-vis du côté corps de véhicule de la bielle de torsion (35). Cet instrument de couplage (39) possède une partie supérieure (39Ua) et une partie inférieure (39La) de forme plate qui possèdent des faces en opposition mutuelle dans la direction verticale du véhicule. Les côtés externes dans la direction latérale du véhicule de la partie supérieure (39Ua) et de la partie inférieure (39La) sont liés au côté interne dans la direction latérale du véhicule d'un logement de montant (27).
PCT/JP2015/052178 2015-01-27 2015-01-27 Structure de support d'ensemble moteur WO2016120993A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/052178 WO2016120993A1 (fr) 2015-01-27 2015-01-27 Structure de support d'ensemble moteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/052178 WO2016120993A1 (fr) 2015-01-27 2015-01-27 Structure de support d'ensemble moteur

Publications (1)

Publication Number Publication Date
WO2016120993A1 true WO2016120993A1 (fr) 2016-08-04

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Application Number Title Priority Date Filing Date
PCT/JP2015/052178 WO2016120993A1 (fr) 2015-01-27 2015-01-27 Structure de support d'ensemble moteur

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11104386B2 (en) 2017-05-31 2021-08-31 Honda Motor Co., Ltd. Torque rod mounting structure
US20220126924A1 (en) * 2020-10-26 2022-04-28 Hyundai Motor Company Vehicle front structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006327458A (ja) * 2005-05-27 2006-12-07 Nissan Motor Co Ltd パワーユニットマウント構造
JP2012071648A (ja) * 2010-09-28 2012-04-12 Honda Motor Co Ltd トルクロッド取付け用ブラケット構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006327458A (ja) * 2005-05-27 2006-12-07 Nissan Motor Co Ltd パワーユニットマウント構造
JP2012071648A (ja) * 2010-09-28 2012-04-12 Honda Motor Co Ltd トルクロッド取付け用ブラケット構造

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11104386B2 (en) 2017-05-31 2021-08-31 Honda Motor Co., Ltd. Torque rod mounting structure
US20220126924A1 (en) * 2020-10-26 2022-04-28 Hyundai Motor Company Vehicle front structure
US11634182B2 (en) * 2020-10-26 2023-04-25 Hyundai Motor Company Vehicle front structure

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