JP6156351B2 - Vehicle powertrain support structure - Google Patents

Vehicle powertrain support structure Download PDF

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Publication number
JP6156351B2
JP6156351B2 JP2014258502A JP2014258502A JP6156351B2 JP 6156351 B2 JP6156351 B2 JP 6156351B2 JP 2014258502 A JP2014258502 A JP 2014258502A JP 2014258502 A JP2014258502 A JP 2014258502A JP 6156351 B2 JP6156351 B2 JP 6156351B2
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vehicle
bracket
powertrain
mount
transfer
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JP2016117405A (en
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陽介 岩▲崎▼
陽介 岩▲崎▼
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マツダ株式会社
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Priority to JP2014258502A priority Critical patent/JP6156351B2/en
Priority claimed from CN201580068431.4A external-priority patent/CN107107726B/en
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Description

  The present invention relates to a powertrain support structure for a vehicle in which, for example, a powertrain provided with a transfer that transmits the output of a horizontally mounted engine to rear wheels is supported by a mount bracket.
2. Description of the Related Art Conventionally, in a vehicle including a horizontally mounted engine whose rotational axis is positioned in the vehicle width direction, a front wheel drive vehicle that drives only front wheels and a four wheel drive vehicle that drives four wheels may be set.
In the case of a front-wheel drive vehicle, a power train composed of a horizontally mounted engine and a transmission includes, for example, a right mount bracket and a left mount bracket that are mounted at both ends in the vehicle width direction, and a rear mount bracket that is mounted on the transmission. It is supported by the vehicle body via
On the other hand, in the case of a four-wheel drive vehicle, a power train composed of a horizontally mounted engine, a transmission, and a transfer is mounted on the transfer, for example, a right mount bracket and a left mount bracket that are mounted at both ends in the vehicle width direction. It is supported by the vehicle body via a rear mount bracket.
As described above, the rear mount bracket is connected to the transmission in the front-wheel drive vehicle, but may be connected to the transfer in the four-wheel drive vehicle.
  For example, in the vehicle powertrain structure described in Patent Document 1, the front part of the rear mount bracket (engine rear mount bracket 66) is connected and fixed to the side part of the transfer in a four-wheel drive vehicle of a horizontally mounted engine. The rear portion of the bracket (member side mounting member 60) is fixedly connected to the engine rear mount member.
  The engine rear mount member is formed in a shape that swells above the vehicle between the driver's seat and the passenger seat and bridges the lower portion of the tunnel portion extending in the front-rear direction in the vehicle width direction. . Then, the rear portion of the rear mount bracket (member side mounting member 60) is disposed on the side of the propeller shaft that passes through the space surrounded by the tunnel portion and the engine rear mount member.
Incidentally, in recent years, there is a need to suppress the overhanging of the floor panel into the vehicle interior from the viewpoints of securing a vehicle interior space for passengers to ride in and optimizing the pedal layout.
However, in Patent Document 1, since the mounting bracket is positioned on the side of the propeller shaft, the length in the vehicle width direction in the tunnel portion is increased, and thus the space for the driver seat and the passenger seat may be reduced.
  For this reason, in the powertrain structure of the vehicle of patent document 1, there existed a problem that the arrangement | positioning space of an accelerator pedal or a brake pedal produced restrictions and an appropriate driving position could not be set.
Japanese Patent Laid-Open No. 2003-104078
  An object of the present invention is to provide a powertrain support structure for a vehicle that can suppress the influence on the interior of the vehicle even when the vehicle is equipped with a transfer in a vehicle equipped with a horizontally mounted engine. And
According to the present invention, the output of the transmission is transmitted via a transverse engine whose rotational axis is positioned in the vehicle width direction of the vehicle, a transmission that transmits the output of the lateral engine to a front wheel via a drive shaft, and a propeller shaft. A powertrain support structure for a vehicle, comprising: a powertrain configured by transfer for transmission to a rear wheel; a rear mount bracket for connecting the rear portion of the powertrain and the vehicle body and elastically supporting the powertrain so as to be swingable; The front portion of the rear mount bracket is connected to the transfer via an intermediate bracket at a position below the drive shaft and in the vehicle vertical direction where the transmission and the transfer overlap in the vehicle width direction. configuration and then, the intermediate bracket , Which has elasticity, characterized in that the front part of the rear mount bracket including a front mounting bush for coupling.
  The transmission and the transfer are superposed in the vehicle width direction as long as the transmission and the transfer overlap with each other in a side view of the vehicle, and the transmission and the transfer may not contact each other in the vehicle width direction.
  The rear mount bracket can be a rear mount bracket integrally provided with an elastic member having elasticity, or a rear mount bracket constituted by a transfer side bracket, a vehicle body side bracket, and an elastic member having elasticity.
According to the present invention, even when a vehicle equipped with a horizontally mounted engine is equipped with a transfer, the influence on the passenger compartment can be suppressed.
Specifically, by connecting the rear mount bracket to the transfer below the drive shaft, the powertrain support structure of the vehicle can place the position of the rear mount bracket relative to the vehicle body on the front side of the vehicle.
  Furthermore, by connecting the front part of the rear mount bracket to the transfer at a position in the vehicle vertical direction where the transmission and the transfer overlap in the vehicle width direction, the vehicle powertrain support structure allows the position of the rear mount bracket relative to the vehicle body. It can be easily arranged on the vehicle lower side.
  For example, when the rear portion of the rear mount bracket extending in the vehicle front-rear direction is connected to a suspension cross member disposed below the rear end of the transfer, the vehicle powertrain support structure is positioned in the vehicle vertical direction substantially equivalent to the suspension cross member. In addition, the rear mount bracket can be disposed at a position ahead of the vehicle relative to the suspension cross member.
  Thereby, the powertrain support structure of the vehicle can lower the mounting position of the powertrain with respect to the vehicle body to the vehicle lower side. For this reason, for example, in a vehicle in which front wheel drive and four wheel drive are set, the powertrain support structure of the vehicle includes a connection position between a rear mount bracket and a transmission in a front wheel drive vehicle, and a rear mount bracket in a four wheel drive vehicle. And the transfer position can be easily made substantially the same position.
That is, the powertrain support structure of the vehicle can make the total height of the front-wheel drive vehicle and the total height of the four-wheel drive vehicle substantially the same in a vehicle in which front-wheel drive and four-wheel drive are set, for example.
Furthermore, since the power train mounting position with respect to the vehicle body can be arranged on the vehicle lower side, the vehicle power train support structure suppresses the bulging of the floor panel and the dash panel to the vehicle interior side, and the floor through which the propeller shaft is inserted. The enlargement of the tunnel can be suppressed.
  Therefore, the powertrain support structure of the vehicle can lower the position where the powertrain is mounted on the vehicle body to the lower side of the vehicle, and can suppress the influence on the vehicle interior even when the transfer is provided.
Further, the present invention is configured such that the front portion of the rear mount bracket and the transfer are connected via an intermediate bracket, and the intermediate bracket is elastic and has a front portion to which the front portion of the rear mount bracket is connected. A mounting bush is provided.
According to the present invention, the powertrain support structure of the vehicle can easily interpose the front mount bush without making a separate transfer.
Specifically, the size of the front mount bush may vary from vehicle model to vehicle model even if it is a horizontally mounted engine. It is necessary to make different cases.
In contrast, by providing an intermediate bracket and providing the intermediate bracket with a front mount bush, the vehicle powertrain support structure has a front mount bush suitable for each vehicle type without creating a separate transfer case. The transfer and the rear mount bracket can be connected to each other through the via.
Therefore, the powertrain support structure of the vehicle can easily interpose the front mounting bush without connecting the transfer and the rear mount bracket via the intermediate bracket without making a separate transfer.
Further, the present invention provides a horizontal engine in which a rotation shaft is positioned in the vehicle width direction of the vehicle, a transmission that transmits the output of the horizontal engine to a front wheel via a drive shaft, and an output of the transmission via a propeller shaft. Power train support comprising a power train composed of a transfer that transmits the power to the rear wheels, a rear mount bracket that connects the rear portion of the power train and the vehicle body and elastically supports the power train in a swingable manner. A front mount bushing having elasticity at a position in the vehicle vertical direction where the front portion of the rear mount bracket is below the drive shaft and the transmission and the transfer overlap in the vehicle width direction. Connected to the transfer via , The front mounting bush, characterized by comprising integrally with the transfer.
According to the present invention, the powertrain support structure of the vehicle can lower the powertrain mounting position relative to the vehicle body to the lower side of the vehicle, and can suppress the influence on the vehicle interior even when a transfer is provided.
Furthermore, the powertrain support structure of the vehicle can suppress an increase in the number of parts and can connect the rear mount bracket and the transfer via the front mount bush.
As an aspect of the present invention, the rear mount bracket can be provided with a rear mount bushing having a bolt insertion hole for allowing insertion of a connecting bolt to be screwed into the vehicle body from the vehicle vertical direction, and having elasticity.
According to the present invention, the powertrain support structure for a vehicle can suppress interference with the vehicle body side even when the mounting position of the powertrain with respect to the vehicle body is lowered.
  Specifically, for example, when a rear mount bracket having a rear mount bush that allows insertion of a connecting bolt from the vehicle width direction is connected to a suspension cross member, the member that supports the rear mount bracket on the upper surface side of the suspension cross member Side brackets need to be placed.
  Furthermore, in the case of a substantially cylindrical rear mount bush, the length of the rear mount bracket in the vehicle vertical direction tends to be long due to the outer diameter of the rear mount bush. For this reason, if the height of the member side bracket is increased and the mounting position of the power train on the vehicle body is lowered, the transfer and the propeller shaft may interfere with the member side bracket.
  In contrast, the rear mount bracket is provided with a rear mount bush that allows insertion of the connecting bolt from the vertical direction of the vehicle, so that the vehicle powertrain support structure shortens the length of the rear mount bracket in the vertical direction of the vehicle. can do.
  For example, in the case of a substantially cylindrical rear mount bush, the axial length tends to be shorter than the radial length of the rear mount bush. For this reason, the rear mount bracket that inserts the connecting bolt into the rear mount bush from the vehicle vertical direction can suppress the length in the vehicle vertical direction to be shorter than when the connecting bolt is inserted from the vehicle width direction.
  As a result, the powertrain support structure of the vehicle can suppress the height of the connecting portion to which the rear portion of the rear mount bracket is connected as compared with the case where the connecting bolt is inserted from the vehicle width direction.
  Therefore, the powertrain support structure of the vehicle allows the transfer, propeller shaft, etc. to interfere with the vehicle body side even when the mounting position of the powertrain with respect to the vehicle body is lowered by the rear mounting bush that allows the insertion of the connecting bolt from the vehicle vertical direction. Can be prevented.
  Further, as an aspect of the present invention, a cross member extending in the vehicle width direction is arranged behind the drive shaft and below the propeller shaft in the vehicle width direction, and the front wheel is connected to the cross member so as to be steerable. A fixed steering gear box, and the cross member includes a groove portion extending in the vehicle width direction and recessed at the vehicle lower side, and the steering gear box can be disposed in the groove portion of the cross member. .
According to the present invention, the powertrain support structure for a vehicle can lower the mounting position of the powertrain on the vehicle body to the lower side of the vehicle.
Specifically, in a vehicle equipped with a horizontally mounted engine, the steering gear box is often arranged behind the vehicle rather than the power train. For this reason, when the mounting position of the power train on the vehicle body is lowered, for example, the rear end of the transfer or the propeller shaft may interfere with the steering gear box.
  Therefore, by arranging the steering gear box in the concave groove formed in the cross member, the vehicle powertrain support structure can lower the mounting position of the steering gear box with respect to the vehicle body downward. In other words, the powertrain support structure of the vehicle can lower the powertrain mounting position relative to the vehicle body to the lower side of the vehicle without interference between the powertrain and the steering gear box.
  Further, for example, in a vehicle in which front wheel drive and four wheel drive are set, the vehicle powertrain support structure is such that the mounting position of the steering gear box with respect to the vehicle body is substantially the same for the front wheel drive vehicle and the four wheel drive vehicle. can do. For this reason, the powertrain support structure of the vehicle can further suppress the difference in the mounting position of the powertrain with respect to the vehicle body between the front wheel drive vehicle and the four wheel drive vehicle, and can increase the ratio of common parts.
  In addition, the mounting position of the power train on the vehicle body and the mounting position of the steering gear box are substantially the same for the front-wheel drive vehicle and the four-wheel drive vehicle. The geometry can be shared between front-wheel drive vehicles and four-wheel drive vehicles.
Therefore, the powertrain support structure of the vehicle can lower the mounting position of the powertrain with respect to the vehicle body to the lower side of the vehicle by arranging the steering gear box in the concave groove portion of the cross member. The design in the set vehicle can be facilitated .
As or aspects of the octopus invention, the horizontal and the engine-side mount bracket swingably elastically support the engine, transmission side mount bracket swingably elastically supporting the transmission to the vehicle body to the vehicle body The rear mount bracket is disposed at a substantially center in the vehicle width direction of the vehicle body, and the engine side mount bracket and the mission side mount bracket are positioned in front of the vehicle with respect to the front portion of the rear mount bracket. In addition, the power train can be suspended at a position above the vehicle.
The engine side mounting bracket may be a vehicle body side bracket, an elastic member having elasticity, a mounting bracket constituted by the engine side bracket, or the like.
The mission side mounting bracket may be a vehicle body side bracket, an elastic member having elasticity, a mounting bracket constituted by the mission side bracket, or the like.
According to the present invention, the powertrain support structure of the vehicle can support the powertrain that is a heavy object in a well-balanced manner and can suppress the influence on the vehicle interior.
Specifically, for example, in a vehicle in which front wheel drive and four wheel drive are set, the center position of the power train of the front wheel drive vehicle and the center position of the power train of the four wheel drive vehicle are different from each other in the component parts. It will be different.
  For this reason, when the rear mount bracket is arranged in accordance with the position of the center of gravity, the position of the rear mount bracket in the vehicle width direction is different between the front wheel drive vehicle and the four wheel drive vehicle.
  Therefore, by arranging the rear mount bracket approximately at the center in the vehicle width direction, the vehicle powertrain support structure can support the powertrain of the front-wheel drive vehicle and the powertrain of the four-wheel drive vehicle at substantially the same position. it can.
  At this time, since the imaginary line connecting the engine side mounting bracket, the mission side mounting bracket, and the rear mounting bracket forms a substantially triangular shape in plan view, the vehicle powertrain support structure can support the powertrain in a balanced manner. it can.
  Therefore, the powertrain support structure of the vehicle supports the powertrain, which is a heavy object, in a balanced manner by supporting the powertrain in a swingable manner by the engine side mounting bracket, the mission side mounting bracket, and the rear mounting bracket. The influence on the passenger compartment can be suppressed.
  According to the present invention, it is possible to provide a powertrain support structure for a vehicle that can suppress the influence on the vehicle interior even when the vehicle equipped with a horizontally mounted engine is equipped with a transfer.
Explanatory drawing explaining the structure of a vehicle. The top view which shows the external appearance in the powertrain of a vehicle. The principal part right view which shows the principal part of the powertrain support structure in a right side view. The principal part bottom view which shows the principal part of the powertrain support structure in bottom view. The disassembled perspective view which shows the decomposition | disassembly state of the principal part in the powertrain support structure seen from the vehicle downward direction. The principal part right view which shows the principal part of the powertrain support structure in another embodiment. The principal part bottom view which shows the principal part of the powertrain support structure in another embodiment. The right view which shows the transfer in another embodiment.
An embodiment of the present invention will be described below with reference to the drawings.
First, the powertrain support structure of the vehicle 1 in the present embodiment will be described in detail with reference to FIGS. 1 to 5.
  FIG. 1 is an explanatory diagram for explaining the configuration of the vehicle 1, FIG. 2 is a plan view of the appearance of the power train 7 of the vehicle 1, and FIG. 3 is a right side view of a main part of the power train support structure in a right side view. FIG. 4 is a bottom view of the main part of the powertrain support structure in a bottom view, and FIG. 5 is an exploded perspective view of the main part of the powertrain support structure as viewed from below the vehicle.
  In the drawing, arrows Fr and Rr indicate the vehicle front-rear direction, arrow Fr indicates the vehicle front, and arrow Rr indicates the vehicle rear. Furthermore, arrows Rh and Lh indicate the vehicle width direction, arrow Rh indicates the vehicle right direction, and arrow Lh indicates the vehicle left direction. In addition, the upper side in FIG. 3 is the upper side of the vehicle, and the lower side in FIG. 3 is the lower side of the vehicle.
  As shown in FIG. 1, the vehicle 1 transmits the output of a horizontally mounted engine 10 disposed so that a crankshaft is positioned along the vehicle width direction to a front wheel 3 via a drive shaft 2, and This is a so-called FF-based four-wheel drive vehicle in which a power train 7 for transmitting the output of 10 to the rear wheel 6 via the propeller shaft 4 and the rear differential 5 is disposed in the front part thereof.
  More specifically, as shown in FIG. 2, the front portion of the vehicle 1 includes a pair of left and right front side frames (not shown) extending from the dash panel (not shown) to the front of the vehicle, and a sub disposed below the front side frame. The power train 7 is arranged between the frame 40 so that the horizontally placed engine 10 is positioned in front of the vehicle with respect to the steering gear box 8 fixed behind the sub frame 40.
  The steering gear box 8 connects a steering wheel (not shown) operated by an occupant and the front wheel 3, and performs an input rotation due to the operation of the steering wheel in a substantially cylindrical main body cylinder portion 8a extending in the vehicle width direction. It functions as a steering device that changes the direction of the front wheel 3 via a gear housed in (see FIG. 4).
  The sub-frame 40 connects a pair of left and right front and rear members 41 extending in the vehicle front-rear direction, a front cross member 42 that connects the front ends of the front and rear members 41 in the vehicle width direction, and a rear end of the front and rear members 41 in the vehicle width direction. The suspension cross member 43 to which the underbody member such as the lower arm 9 is connected is integrally formed in a substantially square shape in a plan view.
  As shown in FIG. 3, the suspension cross member 43 is integrally formed by overlapping an upper panel 44 positioned on the upper side of the vehicle and a lower panel 45 positioned on the lower side of the vehicle by overlapping them in the vertical direction of the vehicle. Yes.
  More specifically, as shown in FIG. 3, the upper panel 44 includes a top plate portion 441 that forms the upper surface of the suspension cross member 43, and an inner rear wall portion 442 that extends downward from the rear end of the top plate portion 441 to the vehicle rear side. And an inner front wall portion 443 extending downward from the front end of the top plate portion 441 and a front edge portion 444 extending from the front end of the inner front wall portion 443 to the front of the vehicle.
  A bolt opening hole (not shown) for allowing insertion of a connecting bolt 45a for connecting a rear mount bracket 70, which will be described later, and the steering gear box 8 are arranged in the top plate portion 441 at approximately the center in the vehicle width direction of the vehicle 1. In addition, a concave groove portion 441a extending in the vehicle width direction is formed in this order from the front of the vehicle.
The recessed groove portion 441a is formed in a substantially recessed groove shape that projects downward from the vehicle along the main body cylinder portion 8a of the steering gear box 8. The recessed groove portion 441a is formed in a size that allows the main body cylinder portion 8a of the steering gear box 8 to be disposed.
The inner front wall portion 443 is provided with a bracket insertion hole 443a in which a rear mount bracket 70, which will be described later, is opened to a size that allows insertion from the front of the vehicle.
As shown in FIG. 3, the lower panel 45 is opposed to the top plate portion 441 of the upper panel 44 at the lower side of the vehicle, and has a bottom plate portion 451 that contacts the front edge portion 444 and a rear end of the bottom plate portion 451 toward the upper side of the vehicle. The outer rear wall 452 that extends is integrally formed.
The bottom plate portion 451 is formed with a bolt opening hole (not shown) that allows insertion of the connecting bolt 45a at a position facing the bolt opening hole of the upper panel 44 below the vehicle.
As shown in FIGS. 1 to 3, the power train 7 includes a horizontally mounted engine 10 disposed so that a crankshaft is positioned along the vehicle width direction, and a transmission that outputs the output of the horizontally mounted engine 10 to the drive shaft 2. 20 and a transfer 30 that outputs the output of the transmission 20 to the propeller shaft 4.
The horizontally mounted engine 10 is arranged on the left side in the vehicle width direction so that the output shaft (crankshaft) is positioned on the left side of the vehicle.
  The transmission 20 is disposed on the left side of the vehicle with respect to the horizontal engine 10 and is fastened and fixed to the horizontal engine 10 so that the input shaft is positioned substantially coaxially with the output shaft of the horizontal engine 10. . The transmission 20 switches a plurality of gears to decelerate the input rotation, and outputs it to an output shaft arranged in parallel to the lower rear side of the vehicle with respect to the input shaft.
  The pair of left and right drive shafts 2 connected to the output shaft of the transmission 20 are disposed substantially coaxially with respect to the output shaft of the transmission 20. The drive shaft 2 connected to the front wheel 3 on the right side of the vehicle is connected to the output shaft of the transmission 20 via a transfer 30 described later.
  The transfer 30 is disposed so that the input shaft is positioned substantially coaxially with the output shaft on the right side of the vehicle in the transmission 20, and is fastened and fixed to the right side of the transmission 20 with a fastening bolt 30a.
  As shown in FIG. 3, the transfer 30 includes a ring gear to which an input from the transmission 20 is transmitted to an internal space formed by a transfer case 31 located at the rear of the vehicle and a cover 32 located at the front of the vehicle. The drive pinion that is an output shaft is accommodated and held while meshing with the ring gear.
A companion flange 33 to which the flange yoke 4a of the propeller shaft 4 is connected is attached to the rear end of the drive pinion.
Further, as shown in FIGS. 4 and 5, a pair of support legs that extend toward the front lower side of the vehicle and the lower side of the rear of the vehicle and support an intermediate bracket 80 to be described later are provided below the transfer case 31. 34 is provided.
  A boss portion 35 that abuts against an intermediate bracket 80 disposed substantially at the center in the vehicle width direction of the vehicle 1 is formed at the tip of the pair of support leg portions 34 toward the right side of the vehicle. The boss portion 35 is formed with a screw hole (not shown) into which a fastening bolt 80a for fastening the intermediate bracket 80 is screwed.
  As shown in FIGS. 2 and 3, the power train 7 having the above-described configuration includes a right mount bracket 50 disposed along the vehicle width direction from the right side of the vehicle between the front side frame and the sub frame 40, and The left mount bracket 60, the right mount bracket 50, and the rear mount bracket 70 disposed behind the left mount bracket 60 are supported so as to be swingable on the vehicle body side.
  As shown in FIG. 2, the right mount bracket 50 connects the laterally upper engine 10 on the right side in the vehicle width direction and the front side frame on the right side of the vehicle in a swingable manner. The right mount bracket 50 includes an engine side bracket 51 fixed to the horizontally mounted engine 10 and a vehicle body side bracket 52 fixed to the front side frame via an elastic rubber mount bush (not shown). Concatenated.
  As shown in FIG. 2, the left mount bracket 60 slidably connects the upper left portion of the transmission 20 in the vehicle width direction and the front side frame on the left side of the vehicle. The left mount bracket 60 connects a transmission side bracket 61 fixed to the transmission 20 and a vehicle body side bracket 62 fixed to the front side frame via an elastic rubber mount bush (not shown). Is configured.
  As shown in FIGS. 3 and 4, the rear mount bracket 70 is connected to the transfer 30 and the suspension cross member 43 via an intermediate bracket 80 fastened to the lower right side surface of the transfer 30 at approximately the center in the vehicle width direction of the vehicle 1. Are connected so as to be swingable.
  More specifically, as shown in FIGS. 3 to 5, the rear mount bracket 70 includes a bracket front portion 71 connected to the intermediate bracket 80 by connection bolts 70 a and nuts 70 b inserted along the vehicle width direction, A bracket rear portion 72 connected to the suspension cross member 43 is integrally joined in this order from the front of the vehicle by connecting bolts 45a and nuts 45b inserted along the vehicle vertical direction.
  The rear mount bracket 70 constitutes a bracket front portion 71 and a bracket rear portion 72 so as to be connected to the intermediate bracket 80 in front of the inner front wall portion 443 of the suspension cross member 43.
  The bracket front portion 71 faces the vehicle width direction at a predetermined interval, and also includes a pair of left and right counter plates 73 that sandwich an intermediate bracket 80 (a front mount bush 81 described later), and an upper surface and a lower surface of the counter plate 73. Are integrally formed with a pair of upper and lower reinforcing plates 74 that connect in the vehicle width direction.
  As shown in FIG. 5, the opposing plate 73 is formed by bending a substantially rectangular metal flat plate that is long in the vehicle front-rear direction, and the opposing plate main body portion 73a in which the vehicle width direction is the thickness direction, and the opposing plate main body portion 73a. And a counter plate wall portion 73b extending from the vehicle vertical direction end portion toward the vehicle width direction outer side.
Further, bolt insertion holes 73c that allow the insertion of the connecting bolts 70a are formed at the front ends of the opposing plate body portion 73a of the opposing plate 73, respectively.
The reinforcing plate 74 is formed in such a size that the rear end of the opposing plate wall portion 73b of the opposing plate 73 is connected in the vehicle width direction.
  As shown in FIGS. 3 and 5, the bracket rear portion 72 is configured to be sandwiched between the upper panel 44 and the lower panel 45 in a state of being connected to the suspension cross member 43, and has a substantially cylindrical shape whose axial direction is the vehicle vertical direction. The rear mount bush 75 and the metal bush support cylinder portion 76 into which the rear mount bush 75 is press-fitted are configured.
  Although the detailed illustration of the rear mount bush 75 is omitted, a small diameter tubular member having an inner diameter into which the connecting bolt 45a can be inserted, a large diameter tubular member having a larger diameter than the small diameter tubular member, and a peripheral surface thereof face each other. It is comprised with the synthetic rubber which has the elasticity filled between the small diameter tubular member arrange | positioned coaxially and the large diameter tubular member. In addition, let the internal space which accept | permits the insertion of the connection bolt 45a in the rear part mount bush 75 be the bolt insertion hole 75a.
  The bush support cylindrical portion 76 is formed in a substantially cylindrical shape having an inner diameter that allows the rear mount bush 75 to be press-fitted and an axial length. The rear end of the bracket front portion 71 is joined to the outer peripheral surface of the bush support cylinder portion 76 by welding or the like.
  As shown in FIGS. 3 to 5, the intermediate bracket 80 includes a substantially cylindrical front mount bush 81 whose axial direction is the vehicle width direction, and an aluminum alloy bracket body 82 having a predetermined thickness. ing.
  Although the detailed illustration of the front mount bush 81 is omitted, the peripheral surface faces a small-diameter tubular member having an inner diameter into which the connecting bolt 70a can be inserted, a large-diameter tubular member having a larger diameter than the small-diameter tubular member, and the front surface. And a synthetic rubber having elasticity filled between a small diameter tubular member and a large diameter tubular member arranged coaxially.
  The bracket body 82 is formed in a substantially inverted triangular shape when viewed from the side, and has bolt insertion holes 82c in the vehicle width direction that allow insertion of fastening bolts 80a that are screwed into the boss portions 35 of the transfer 30 at both ends in the vehicle longitudinal direction. An opening is formed along.
Further, a bush opening hole (not shown) into which the front mount bush 81 is press-fitted is formed in the bracket body 82.
This bush opening hole is formed in the vicinity of the position in the vehicle vertical direction where the lower end of the transmission 20 and the transfer 30 overlap in the vehicle width direction in the vicinity of the position in the vehicle longitudinal direction substantially the same as the position of the drive shaft 2 in the vehicle longitudinal direction. doing.
  That is, the connection position of the transfer 30 and the rear mount bracket 70 is the position of the drive shaft 2 in the vehicle front-rear direction, and below the drive shaft 2, the vicinity of the lower end of the transmission 20 and the transfer 30 are in the vehicle width. The intermediate bracket 80 is configured so that the vehicle overlaps in the vertical direction.
  On the other hand, the rear mount is such that the transfer position of the transfer 30 and the rear mount bracket 70 with respect to the vehicle body is located in front of the inner front wall 443 of the suspension cross member 43 and below the drive shaft 2. A bracket 70 and an intermediate bracket 80 are configured.
  More specifically, at the intersection position where the imaginary line in the vehicle width direction along the output axis of the transmission 20 in the bottom view and the imaginary center line in the vehicle width direction of the vehicle 1 in the bottom view intersects above the intersection position. The intermediate bracket 80 is configured such that the vicinity of the lower end of the positioned power train 7 is a connection position of the rear mount bracket 70 to the transfer 30.
  Further, in a side view, a TM side imaginary line that extends downward from the output shaft of the transmission 20 and a vehicle body side imaginary line that extends forward from the virtual midpoint in the axial direction of the rear mount bush 75 connected to the suspension cross member 43. The rear mount bracket 70 and the intermediate bracket 80 are configured such that the position of the intersection with the vehicle is the connection position of the transfer 30 and the rear mount bracket 70 with respect to the vehicle body.
  The powertrain support structure of the vehicle 1 that supports the powertrain 7 with the above-described configuration suppresses the influence on the vehicle interior even when the vehicle 1 equipped with the transverse engine 10 includes the transfer 30. can do.
  Specifically, by connecting the rear mount bracket 70 to the transfer 30 below the drive shaft 2, the powertrain support structure of the vehicle 1 places the position of the rear mount bracket 70 relative to the vehicle body on the vehicle front side. Can do.
  Further, by connecting the bracket front portion 71 to the transfer 30 at a position in the vehicle vertical direction where the transmission 20 and the transfer 30 are overlapped in the vehicle width direction, the powertrain support structure of the vehicle 1 is provided with a rear mount bracket 70 for the vehicle body. Can be easily arranged on the vehicle lower side.
  More specifically, the bracket rear portion 72 of the rear mount bracket 70 is connected to the suspension cross member 43 disposed below the rear end of the transfer 30, so that the powertrain support structure of the vehicle 1 is substantially the same as that of the suspension cross member 43. The rear mount bracket 70 can be disposed at a position in the vertical direction and in front of the vehicle with respect to the suspension cross member 43.
  Thereby, the powertrain support structure of the vehicle 1 can lower the mounting position of the powertrain 7 with respect to the vehicle body to the vehicle lower side. For this reason, for example, in the vehicle 1 in which the front wheel drive and the four wheel drive are set, the power train support structure of the vehicle 1 includes the connection position between the rear mount bracket and the transmission 20 in the front wheel drive vehicle, and the four wheel drive vehicle. The connecting position of the rear mount bracket 70 and the transfer 30 can be easily made substantially the same position.
That is, the powertrain support structure of the vehicle 1 can make the total height of the front-wheel drive vehicle and the total height of the four-wheel drive vehicle substantially the same in the vehicle 1 in which front-wheel drive and four-wheel drive are set, for example. .
Furthermore, since the mounting position of the power train 7 with respect to the vehicle body can be arranged on the vehicle lower side, the power train support structure of the vehicle 1 suppresses the bulging of the floor panel and the dash panel to the vehicle interior side, and the propeller shaft 4 An increase in the size of the floor tunnel to be inserted can be suppressed.
  Therefore, the powertrain support structure of the vehicle 1 can lower the mounting position of the powertrain 7 with respect to the vehicle body to the lower side of the vehicle, and can suppress the influence on the vehicle interior even when the transfer 30 is provided. .
  In addition, the power train support structure of the vehicle 1 has a bolt insertion hole 75a that allows the connection bolt 45a to be inserted from above and below the vehicle, and an elastic rear mount bush 75 is provided in the bracket rear portion 72. Even if the mounting position of the powertrain 7 is lowered, interference with the vehicle body can be suppressed.
  Specifically, for example, when a rear mount bracket having a rear mount bush that allows insertion of a connecting bolt from the vehicle width direction is connected to the suspension cross member 43, the rear mount bracket is supported on the upper surface side of the suspension cross member 43. It is necessary to arrange the member side bracket.
  Furthermore, in the case of a substantially cylindrical rear mount bush, the length of the rear mount bracket in the vehicle vertical direction tends to be long due to the outer diameter of the rear mount bush. For this reason, when the height of the member side bracket is increased and the mounting position of the power train 7 on the vehicle body is lowered, the transfer 30 and the propeller shaft 4 may interfere with the member side bracket.
  On the other hand, the rear mount bracket 70 is provided with a rear mount bush 75 that allows the connection bolt 45a to be inserted from the vehicle vertical direction, so that the powertrain support structure of the vehicle 1 has the rear mount bracket 70 in the vehicle vertical direction. The length can be suppressed short.
  More specifically, in the case of the rear mount bush 75, the axial length tends to be shorter than the radial length of the rear mount bush 75. For this reason, the rear mount bracket 70 that inserts the connecting bolt 45a into the rear mount bush 75 from the vehicle vertical direction can suppress the length in the vehicle vertical direction to be shorter than when the connecting bolt is inserted from the vehicle width direction. it can.
  As a result, the powertrain support structure of the vehicle 1 can suppress the thickness of the suspension cross member 43 to which the bracket rear portion 72 of the rear mount bracket 70 is coupled as compared with the case where the coupling bolt 45a is inserted from the vehicle width direction. it can.
  Therefore, the power train support structure of the vehicle 1 is configured such that the transfer 30, the propeller shaft 4, etc., even if the mounting position of the power train 7 with respect to the vehicle body is lowered by the rear mount bush 75 that allows the connection bolt 45 a to be inserted from above and below the vehicle. Interference with the vehicle body can be prevented.
  Further, the suspension cross member 43 is provided with a concave groove portion 441a, and the steering gear box 8 is disposed in the concave groove portion 441a of the suspension cross member 43, so that the power train support structure of the vehicle 1 can provide a power train 7 for the vehicle body. The mounting position can be lowered further down the vehicle.
  Specifically, in the vehicle 1 provided with the horizontally mounted engine 10, the steering gear box 8 is often arranged behind the power train 7. For this reason, if the mounting position of the power train 7 on the vehicle body is lowered, for example, the rear end of the transfer 30 or the propeller shaft 4 may interfere with the steering gear box 8.
  Therefore, by arranging the steering gear box 8 in the concave groove portion 441a formed in the suspension cross member 43, the powertrain support structure of the vehicle 1 can lower the mounting position of the steering gear box 8 relative to the vehicle body downward in the vehicle. it can. That is, the powertrain support structure of the vehicle 1 can lower the mounting position of the powertrain 7 relative to the vehicle body further downward without interference between the powertrain 7 and the steering gear box 8.
  Further, for example, in the vehicle 1 in which front wheel drive and four wheel drive are set, the powertrain support structure of the vehicle 1 is substantially the same as the position where the steering gear box 8 is mounted on the vehicle body between the front wheel drive vehicle and the four wheel drive vehicle. Can be in the same position. For this reason, the powertrain 7 support structure of the vehicle 1 can further suppress the difference in the mounting position of the powertrain 7 with respect to the vehicle body between the front-wheel drive vehicle and the four-wheel drive vehicle, and can increase the ratio of common parts.
  In addition, since the mounting position of the power train 7 and the mounting position of the steering gear box 8 on the vehicle body are substantially the same in the front wheel drive vehicle and the four wheel drive vehicle, the power train support structure of the vehicle 1 is, for example, The geometry of the undercarriage can be shared between the front-wheel drive vehicle and the four-wheel drive vehicle.
  Therefore, the power train support structure of the vehicle 1 can lower the mounting position of the power train 7 with respect to the vehicle body to the lower side of the vehicle by disposing the steering gear box 8 in the concave groove portion 441a of the suspension cross member 43. The design in the vehicle 1 in which the front wheel drive and the four wheel drive are set can be facilitated.
  Further, the bracket front portion 71 and the transfer 30 are connected via the intermediate bracket 80, and the front mount bush 81 is provided in the intermediate bracket 80, so that the powertrain support structure of the vehicle 1 is the transfer case 31. The front mount bush 81 can be easily interposed without making a different one.
  Specifically, even in the case of the vehicle 1 of the horizontally mounted engine 10, the size of the front mount bush 81 may be different for each vehicle type, and therefore the front mount bush 81 is provided integrally with the transfer 30. It is necessary to make a transfer case 31 for each vehicle type.
  In contrast, by providing the intermediate bracket 80 and providing the intermediate bracket 80 with the front mount bush 81, the powertrain support structure of the vehicle 1 is suitable for each vehicle type without forming the transfer case 31 separately. The transfer 30 and the rear mount bracket 70 can be connected via the front mount bush 81.
  Therefore, the powertrain support structure of the vehicle 1 connects the transfer 30 and the rear mount bracket 70 via the intermediate bracket 80 so that the front mount bush 81 is easily interposed without separately forming the transfer case 31. be able to.
  In addition, a right mount bracket 50 that elastically supports the horizontally mounted engine 10 so as to be swingable and a left mount bracket 60 that elastically supports the transmission 20 so as to be swingable are provided. The vehicle 1 is arranged in a substantially central position and the right mount bracket 50 and the left mount bracket 60 are suspended from the bracket front portion 71 at a position in front of the vehicle and above the vehicle. This power train support structure can support the power train 7 which is a heavy object in a well-balanced manner and can suppress the influence on the vehicle interior.
Specifically, for example, in the vehicle 1 in which front wheel drive and four wheel drive are set, the position of the center of gravity of the power train 7 of the front wheel drive vehicle and the position of the center of gravity of the power train 7 of the four wheel drive vehicle are components. It will be different from the difference.
For this reason, when the rear mount bracket 70 is arranged in accordance with the position of the center of gravity, the position of the rear mount bracket 70 in the vehicle width direction is different between the front wheel drive vehicle and the four wheel drive vehicle.
  Therefore, by arranging the rear mount bracket 70 substantially in the center in the vehicle width direction, the powertrain support structure of the vehicle 1 has the powertrain 7 of the front-wheel drive vehicle and the powertrain 7 of the four-wheel drive vehicle at substantially the same position. Can be supported.
  At this time, since the imaginary line connecting the right mount bracket 50, the left mount bracket 60, and the rear mount bracket 70 forms a substantially triangular shape in plan view, the powertrain support structure of the vehicle 1 supports the powertrain 7 in a well-balanced manner. can do.
  Therefore, the powertrain support structure of the vehicle 1 is configured such that the powertrain 7, which is a heavy object, is supported in a well-balanced manner by supporting the powertrain 7 with the right mount bracket 50, the left mount bracket 60, and the rear mount bracket 70 so as to be swingable. While supporting, the influence on a vehicle interior can be suppressed.
  In the above-described embodiment, the rear mount bracket 70 is configured by the bracket front portion 71 and the bracket rear portion 72 provided with the rear mount bush 75. However, the present invention is not limited to this, for example, the bracket front portion and the bracket rear portion. A torque rod provided with a mount bush may be used.
  Further, the rear bracket 72 of the rear mount bracket 70 is directly connected to the suspension cross member 43. However, the present invention is not limited to this. For example, the rear mount 72 is connected to the suspension cross member 43 via a vehicle body side bracket. Also good.
  Further, although the front mount bush 81 and the rear mount bush 75 filled with synthetic rubber are used, the present invention is not limited to this, and a liquid seal mount bush or the like may be used.
In correspondence between the configuration of the present invention and the above-described embodiment,
The front part of the rear mount bracket of the present invention corresponds to the bracket front part 71 of the embodiment,
Similarly,
The rear part of the rear mount bracket corresponds to the bracket rear part 72,
The cross member corresponds to the suspension cross member 43,
The groove portion corresponds to the groove portion 441a,
The engine side mounting bracket corresponds to the right side mounting bracket 50,
The mission side mounting bracket corresponds to the left side mounting bracket 60,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.
  For example, FIG. 6 shows a right side view of the main part of the powertrain support structure in another embodiment, FIG. 7 shows a bottom view of the main part of the powertrain support structure, and FIG. 8 shows a right side view of the transfer 30. The front mount bush 81 may be press-fitted into the bush press-fit portion 36 extending downward from the lower portion of the transfer case 31 to the front of the vehicle.
  That is, the rear mount bracket 70 may be connected to the front mount bush 81 provided integrally with the transfer 30 without using the intermediate bracket 80.
  The bush press-fit portion 36 is formed so that the connection position between the front mount bush 81 of the transfer 30 and the rear mount bracket 70 is equivalent to the above-described embodiment.
  Even in the case of such a configuration, similarly to the above-described embodiment, the powertrain support structure of the vehicle 1 may be a case in which the transfer 30 is provided in the vehicle 1 in which the transverse engine 10 is mounted. The influence on the passenger compartment can be suppressed.
  Further, since the front mount bush 81 is provided integrally with the transfer 30, the powertrain support structure of the vehicle 1 suppresses an increase in the number of parts, and the rear mount bracket 70 via the front mount bush 81. The transfer 30 can be connected.
DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Drive shaft 3 ... Front wheel 4 ... Propeller shaft 6 ... Rear wheel 7 ... Power train 8 ... Steering gear box 10 ... Horizontal installation engine 20 ... Transmission 30 ... Transfer 43 ... Suspension cross member 45a ... Connection bolt 50 ... Right side Mount bracket 60 ... Left mount bracket 70 ... Rear mount bracket 71 ... Bracket front portion 72 ... Bracket rear portion 75 ... Rear mount bush 75a ... Bolt insertion hole 80 ... Intermediate bracket 81 ... Front mount bush 441a ... Concave groove portion

Claims (5)

  1. A horizontal engine whose rotational axis is positioned in the vehicle width direction of the vehicle, a transmission that transmits the output of the horizontal engine to the front wheels via a drive shaft, and an output of the transmission to the rear wheels via a propeller shaft A powertrain composed of transfer
    A powertrain support structure for a vehicle comprising a rear mount bracket for connecting the rear portion of the powertrain and the vehicle body and elastically supporting the powertrain so as to be swingable,
    The front part of the rear mount bracket
    Below the drive shaft and at a position in the vehicle vertical direction where the transmission and the transfer overlap in the vehicle width direction, and connected to the transfer via an intermediate bracket ,
    In the intermediate bracket,
    A vehicle powertrain support structure including a front mount bush having elasticity and connected to a front portion of the rear mount bracket .
  2. A horizontal engine whose rotational axis is positioned in the vehicle width direction of the vehicle, a transmission that transmits the output of the horizontal engine to the front wheels via a drive shaft, and an output of the transmission to the rear wheels via a propeller shaft A powertrain composed of transfer
    A powertrain support structure for a vehicle comprising a rear mount bracket for connecting the rear portion of the powertrain and the vehicle body and elastically supporting the powertrain so as to be swingable,
    The front part of the rear mount bracket
    Below the drive shaft and at a position in the vehicle vertical direction where the transmission and the transfer are overlapped in the vehicle width direction, and connected to the transfer via an elastic front mount bush,
    The front mounting bush,
    Provided integrally with the transfer
    Vehicle powertrain support structure.
  3. At the rear of the rear mount bracket,
    3. The vehicle powertrain support structure according to claim 1, further comprising: a rear mount bush having elasticity that has a bolt insertion hole that allows insertion of a connection bolt that is screwed into the vehicle body from the vehicle vertical direction.
  4. Behind the drive shaft and below the propeller shaft,
    A cross member extending in the vehicle width direction;
    The front wheel is connected to be steerable and includes a steering gear box fixed to the cross member,
    In the cross member,
    A groove portion extending in the vehicle width direction and recessed at the vehicle lower side is provided,
    The steering gear box,
    The powertrain support structure for a vehicle according to any one of claims 1 to 3, wherein the powertrain support structure is disposed in the groove portion of the cross member.
  5. An engine side mounting bracket that elastically supports the horizontally mounted engine so as to be swingable with respect to the vehicle body;
    A transmission-side mounting bracket that elastically supports the transmission in a swingable manner with respect to the vehicle body;
    The rear mount bracket,
    Arranged at the approximate center in the vehicle width direction in the car body,
    The engine side mounting bracket and the mission side mounting bracket,
    The vehicle powertrain support according to any one of claims 1 to 4 , wherein the powertrain is suspended at a position in front of and above the vehicle with respect to a front portion of the rear mount bracket. Construction.
JP2014258502A 2014-12-22 2014-12-22 Vehicle powertrain support structure Active JP6156351B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014258502A JP6156351B2 (en) 2014-12-22 2014-12-22 Vehicle powertrain support structure

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2014258502A JP6156351B2 (en) 2014-12-22 2014-12-22 Vehicle powertrain support structure
CN201580068431.4A CN107107726B (en) 2014-12-22 2015-12-18 The dynamical system support construction of vehicle
DE112015005716.1T DE112015005716T5 (en) 2014-12-22 2015-12-18 Drive tray structure for one vehicle
PCT/JP2015/085489 WO2016104362A1 (en) 2014-12-22 2015-12-18 Power train supporting structure for vehicle
US15/532,009 US10099551B2 (en) 2014-12-22 2015-12-18 Power train supporting structure for vehicle

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JP6156351B2 true JP6156351B2 (en) 2017-07-05

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3815185B2 (en) * 2000-06-14 2006-08-30 日産自動車株式会社 Engine room structure of a four-wheel drive vehicle
JP2012051431A (en) * 2010-08-31 2012-03-15 Suzuki Motor Corp Power train supporting apparatus

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