JP2010006199A - Air-conditioning unit arrangement structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioning unit arrangement structure of a vehicle which can satisfy both of a backward shifting layout of a powertrain and an arrangement of an air-conditioning unit while restraining its influence on vehicle interior, can arrange the air-conditioning unit in a space-saving manner, and can effectively control air-conditioned temperature by preheating or precooling introduced air. <P>SOLUTION: A dash panel 3 is formed with a dash-central-depressed portion and dash-side portions extending toward both sides of a body-width direction of the dash-central-depressed portion. The air-conditioning unit 60 is arranged in either one of the dash-side portions in the body-width direction. A blower unit 64 and a heat-exchanger unit 65, which constitute the blower unit 60, are arranged in a back and forth direction. The heat-exchanger unit 65 is arranged in proximity to an air-intake passage 76 into the blower unit 64. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is provided with a dash panel for partitioning a vehicle compartment and an engine room in the vehicle front-rear direction, the dash panel being recessed toward the rear of the vehicle and provided with a power train unit for driving wheels. And an air conditioning unit comprising a blower unit and a heat exchanger unit on either side of the dash side portion in the vehicle width direction. The present invention relates to an air conditioning unit arrangement structure of a vehicle as arranged.

  Conventionally, a powertrain unit (engine and transmission) as a heavy object is arranged near the center in the vehicle longitudinal direction to reduce the yaw moment of inertia and improve the handling stability and vehicle performance. Has a structure shown in FIG. In FIG. 14, the configuration when a rotary engine and transmission are used as the power train unit is shown by a solid line, and the configuration when a reciprocating engine and transmission is used as a power train unit is shown by a dotted line.

  The conventional structure shown in FIG. 14 is provided with dash panels 100A and 100B for partitioning the engine room and the vehicle compartment in the front-rear direction. The dash panels 100A and 100B are recessed toward the rear in the center in the vehicle width direction. The rotary engine 102A that forms the power train unit in the dash center recesses 101A and 101B is formed with recesses 101A and 101B (dash center recesses), and dash side portions are provided on both sides of the dash center recess in the vehicle width direction. Alternatively, a part of the rear side of the reciprocating engine 102B is disposed, and transmissions 104A and 104B are disposed below the tunnel portion 103, that is, outside the vehicle, and further in the vehicle width direction so as to be close to the dash center recesses 101A and 101B. Air conditioning units 105A and 105B are arranged in the center of theHere, the air conditioning units 105A and 105B generally include a blower unit and a heat exchanger unit.

  In comparison between the solid line (rotary engine mounting form) and the dotted line (reciprocating engine mounting form) in FIG. 14, the reciprocating engine 102B is larger than the rotary engine 102A. The air-conditioning unit 105B that is further set rearward and disposed in the center portion in the vehicle width direction is set to be smaller than the air-conditioning unit 105A when the rotary engine is mounted.

  With this configuration, it is possible to reduce the yaw moment of inertia, improve the steering stability, and improve the vehicle performance, regardless of whether the rotary engine 102A or the reciprocating engine 102B is mounted.

  However, further reduction of the yaw moment of inertia and further improvement of steering stability, etc. are demanded. In this case, it is conceivable to move the rotary engine 102A and the reciprocating engine 102B backward further, Since the engine interferes with the air conditioning units 105A and 105B, the backward movement (rear shift layout) is impossible.

Patent Document 1 discloses a structure that is substantially the same as the configuration when the rotary engine 102A of FIG. 14 is mounted.
On the other hand, Patent Document 2 and Patent Document 3 disclose a vehicle air-conditioning unit arrangement structure in which an air-conditioning unit for air-conditioning the vehicle interior is arranged at the rear of the vehicle compartment for the purpose of achieving further rearrangement of the powertrain unit. However, since the passenger compartment or the luggage compartment becomes narrow corresponding to the space occupied by the air conditioning unit, there is a problem that is not practical.
JP 2003-326981 A JP 2005-28911 A JP 2005-29057 A

  Therefore, the present invention forms a dash panel from a dash center recess and dash side portions extending on both sides in the vehicle width direction of the dash center recess, and air-conditions on either side of the dash side portion in the vehicle width direction. A blower unit and a heat exchanger unit constituting the air conditioning unit are arranged in the longitudinal direction of the vehicle, and a heat exchanger unit is arranged in the vicinity of the air intake path to the blower unit. Therefore, while suppressing the influence on the passenger compartment, it is possible to achieve both the rear shift layout of the powertrain unit and the arrangement of the air conditioning unit, and preheat the introduction air while arranging the air conditioning unit in a compact manner. It is an object of the present invention to provide an air conditioning unit arrangement structure for a vehicle that can be pre-cooled and enables efficient air conditioning temperature control.

  The vehicle air conditioning unit arrangement structure according to the present invention is provided with a dash panel that partitions the vehicle compartment and the engine room in the vehicle front-rear direction, and the dash panel is recessed toward the vehicle rear and drives the wheels. Is formed from a dash center recess and dash side portions extending on both sides in the vehicle width direction of the dash center recess, and the blower unit and the heat exchanger are provided on either side of the dash side portion in the vehicle width direction. An air conditioning unit arrangement structure of a vehicle in which an air conditioning unit including a unit is arranged, wherein the blower unit and the heat exchanger unit are arranged in a vehicle front-rear direction, and air to the blower unit is provided. The heat exchanger unit is disposed close to the intake path.

According to the above configuration, the power train unit is disposed in the dash central recess, while the air conditioning unit is disposed on either side of the dash side in the vehicle width direction. The rear shift layout of the unit and the arrangement of the air conditioning unit can be made compatible, and the yaw inertia moment can be reduced by the rear shift layout of the power train unit.
Moreover, since the blower unit and the heat exchanger unit are arranged in the longitudinal direction of the vehicle and the heat exchanger unit is arranged close to the air intake path to the blower unit, the air conditioning unit is arranged in a compact manner. The introduced air can be preheated or precooled, thereby enabling efficient air conditioning temperature control.

In one embodiment of the present invention, an outside air intake port is formed in a cowl portion formed above the dash panel, and the heat exchanger is placed close to an air passage connecting the outside air inlet port and the blower unit. A unit is arranged.
According to the above configuration, since the outside air taken in from the outside air intake port of the cowl portion passes through a portion close to the heat exchanger unit before reaching the blower unit, preheating or precooling is possible. In particular, the outside air is compared with the inside air. Since the temperature difference is even greater, preheating or precooling to the outside air becomes more efficient.

In one embodiment of the present invention, an internal air intake port for taking in indoor air is formed behind the dash panel, and the heat exchanger unit is placed close to an air passage connecting the internal air intake port and the blower unit. Is provided.
According to the above configuration, since the inside air (room air) taken in from the inside air intake port behind the dash panel passes through a portion close to the heat exchanger unit before reaching the blower unit, preheating or precooling is efficiently performed. be able to.

In one embodiment of the present invention, one dash side portion of the dash side portion is disposed offset from the other dash side portion toward the front of the vehicle, and the air conditioner is disposed behind the one dash side portion. A unit is arranged.
According to the said structure, a blower unit and a heat exchanger unit can be arrange | positioned compactly, without affecting a vehicle interior and an engine room.

In one embodiment of the present invention, the blower unit is disposed at a position forward of the other dash side, and the heat exchanger unit is disposed at a position rearward of the other dash side.
According to the above configuration, since the blower unit is disposed at the front position and the heat exchanger unit is disposed at the rear position, these units can be laid out without affecting the vehicle interior and the engine room. Since the blower unit and the heat exchanger unit are arranged at the front and rear, the introduced air can be preheated or precooled.

In one embodiment of the present invention, the one dash side portion is formed as a divided dash side portion that is formed separately from the dash central recess.
According to the above configuration, since the divided dash side portion is formed separately from the dash central concave portion, it is possible to ensure good manufacturability and assembly of the dash panel, and the divided dash side portion It is possible to prevent the influence of heat damage and dust damage in the engine room on the air conditioning unit.

In one embodiment of the present invention, a driver's seat and a passenger seat are juxtaposed in the vehicle width direction on the vehicle interior side behind the dash panel, and the air conditioning unit is disposed on the dash side portion corresponding to the passenger seat side. It is arranged.
According to the above configuration, since the air conditioning unit is arranged corresponding to the passenger seat side, the layout of the passenger compartment (that is, the securing of the living space), the layout of the air conditioning unit, without affecting the driver seat side, Can achieve the layout in the engine room.

In one embodiment of the present invention, the heat exchanger unit includes an evaporator and a heater core, and the air intake path has a precooling opening corresponding to the evaporator, and a preheating opening corresponding to the heater core. And an opening / closing member for opening and closing each opening.
According to the above configuration, when the pre-cooling opening is opened by the opening / closing member, the introduction air can be pre-cooled, and when the pre-heating opening is opened by the opening / closing member, the introduction air can be pre-heated, As a result, preheating and precooling can be switched appropriately.

  According to the present invention, the dash panel is formed from the dash center recess and the dash side portions extending on both sides of the dash center recess in the vehicle width direction, and is air-conditioned on either side of the dash side portion in the vehicle width direction. A blower unit and a heat exchanger unit constituting the air conditioning unit are arranged in the vehicle front-rear direction, and a heat exchanger unit is arranged close to the air intake path to the blower unit. Therefore, it is possible to achieve both the rear shift layout of the powertrain unit and the arrangement of the air conditioning unit while suppressing the influence on the passenger compartment, and preheating or precooling the introduced air while arranging the air conditioning unit in a compact manner. Thus, the air conditioning temperature can be controlled efficiently.

  A dash panel is provided to partition the vehicle compartment and engine room in the vehicle longitudinal direction for the purpose of preheating or precooling the introduced air and enabling efficient air conditioning temperature control while arranging the air conditioning unit in a compact manner. The dash panel is formed of a dash center recess that is recessed toward the rear of the vehicle and in which a powertrain unit that drives the wheels is disposed, and a dash side that extends on both sides of the dash center recess in the vehicle width direction. In the air conditioning unit arrangement structure of a vehicle in which an air conditioning unit including a blower unit and a heat exchanger unit is arranged on either side of the dash side portion in the vehicle width direction, the blower unit and the heat exchanger The unit is arranged in the vehicle longitudinal direction, and the heat exchanger unit is arranged close to the air intake path to the blower unit. It was realized by configuration.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show the air conditioning unit arrangement structure of the vehicle. First, the overall structure of the vehicle will be described with reference to FIGS. 1 and 2 are side views of the vehicle, FIG. 3 is a plan view of the vehicle, and FIG. 4 is a front view of the vehicle.

  1 to 3, a dash lower panel 3 is provided as a dash panel that partitions the engine room 1 and the vehicle compartment 2 in the front-rear direction, and the lower portion of the dash lower panel 3 extends substantially horizontally toward the rear. A floor panel 5 that forms the bottom surface of 2 is integrally or integrally connected, and a kick-up portion 6 that rises upward and a substantially horizontal rear seat pan 7 are formed at the rear of the floor panel 5. A rear floor 9 (floor panel) is connected to the pan 7 substantially horizontally through a bulkhead 8. The rear floor 9 forms a bottom surface of a rear cargo room 48 described later.

  As shown in FIG. 3, the dash lower panel 3 that partitions the vehicle compartment 2 and the engine room 1 in the front-rear direction of the vehicle includes a dash central recess 3 </ b> A that is recessed toward the rear of the vehicle at the center in the vehicle width direction. And dash side portions 3B, 4 extending on both sides in the vehicle width direction of the dash center recess 3A, and one of the left and right dash side portions 3B, 4 in the vehicle width direction (this embodiment will be described later in the passenger seat) The right side corresponding to the 57 side) is formed as a divided dash side portion 4 formed separately from the dash center recess 3A, and the divided dash side portion 4 is more than the other dash side portion 3B. It is disposed offset to the front of the vehicle. Here, the other dash side portion 3B described above corresponds to a general surface of a so-called dash lower panel.

  As shown in a plan view in FIG. 3, a tunnel portion 10 that protrudes upward into the passenger compartment 2 and extends in the front-rear direction of the vehicle is provided at the center of the floor panel 5 in the vehicle width direction. . The tunnel portion 10 extends between the dash lower panel 3 and the bulkhead 8 in the front-rear direction of the vehicle as shown in side views in FIGS. 1 and 2, and the tunnel portion 10 is the center of the vehicle body rigidity. It is. Note that a tunnel member (a so-called high-mount backbone frame) that extends in the front-rear direction of the vehicle along the upper portion of the tunnel portion 10 may be provided on the upper portion of the tunnel portion 10.

  Further, as shown in FIGS. 3 and 4, side sills 11 extending in the front-rear direction of the vehicle are joined and fixed to the left and right sides of the floor panel 5 described above. The side sill 11 is a vehicle body rigid member having a side sill closed section 14 (see FIG. 4) that joins the side sill inner 12 and the side sill outer 13 and extends in the front-rear direction of the vehicle. A side sill reinforcement is interposed between the side sill inner 12 and the side sill outer 13 as necessary.

  Further, as shown in FIGS. 1 to 3, in the middle portion in the front-rear direction between the dash lower panel 3 and the kick-up portion 6, the upper portion of the floor panel 5 has a vertical wall of the tunnel portion 10 and a side sill inner 12. Left and right floor cross members 15, 15 that are connected in the vehicle width direction are provided, and a closed cross section 16 that extends in the vehicle width direction is formed between the floor cross member 15 having a hat-shaped cross section and the floor panel 5. Yes.

  As shown in FIGS. 3 and 4, a pair of left and right floor frames 17 extending in the front-rear direction of the vehicle are provided at the lower portion of the floor panel 5 in the intermediate portion in the vehicle width direction between the tunnel portion 10 and the side sill 11 described above. , 17 (vehicle body rigid members) are joined and fixed, and a closed cross section 18 (see FIG. 4) extending in the front-rear direction of the vehicle is formed between the floor frame 17 and the floor panel 5 having a reverse cross section hat shape. Yes.

  Further, as shown in FIGS. 1 to 3, a pair of left and right rear side frames 19 and 19 (vehicle body rigid members) extending in the front-rear direction of the vehicle are joined and fixed to both lower sides of the rear floor 9 (reverse cross-section hat). A closed cross section (not shown) extending in the vehicle front-rear direction is formed between the rear side frame 19 and the rear floor 9 (in the shape), and the front portions of the pair of rear side frames 19, 19 are shown in FIG. As shown, the side sill 11 is extended forward to a position where it overlaps with the vehicle longitudinal direction.

  On the other hand, as shown in FIG. 3, a pair of left and right front side frames 20, 20 extending in the front-rear direction of the vehicle are provided on the left and right sides of the engine room 1. Each of these front side frames 20 and 20 is a vehicle body rigid member that extends forward from the dash side portions 3B and 4, and each of these front side frames 20 and 20 has a rear portion as shown in FIGS. Extends downward along the front surface of the dash lower panel 3, and the rear end portion of the front side frame 20 is connected to the front end portion of the floor frame 17. The front side frame 20 and the floor frame 17 are As shown in FIG. 3, it continues in a straight line in the longitudinal direction of the vehicle in a plan view.

A front cross member 21 (so-called No. 1.5 cross member) having a closed cross section extending in the vehicle width direction is provided between the pair of left and right front side frames 20 and 20, while the pair of front side frames 20 and 20 are provided. A bumper rain 23 (specifically, a front bumper reinforcement) extending in the vehicle width direction is provided in front of the vehicle via crush cans 22 and 22 (impact energy absorbing members).
An intermediate receding portion 23A that recedes backward is formed at the vehicle width direction middle portion of the bumper rain 23, and side receding portions 23B and 23C that recede backward are also formed at both left and right ends of the bumper rain 23, The overall shape seen from the plane of the bumper rain 23 is a W-shape. The intermediate receding portion 23A of the bumper rain 23 and the above-described front cross member 21 are connected by a crash can 24 (impact energy absorbing member).

As shown in FIG. 3, wheel houses 25, 25 are provided on the vehicle outer side of the pair of left and right front side frames 20, 20 described above, and inside these wheel houses 25, 25 in the vehicle width direction, In addition, suspension towers 26 and 26 (specifically, suspension tower portions) are integrally attached to a substantially central portion of the wheel house 25 in the front-rear direction.
That is, the above-described suspension tower 26 is provided in the middle portion of the front side frame 20 in the vehicle front-rear direction and on the outer side in the vehicle width direction, and the suspension tower 26 supports the front wheels 55. A front suspension (not shown) is supported.

  Further, apron reinforcements 27 and 27 as vehicle body rigid members extending substantially in the front-rear direction of the vehicle are provided at the upper portions of the left and right wheel houses 25 and 25, respectively. As shown in FIG. 7, a shroud upper member 28 is connected, while a cowl side portion 29 is connected to the rear portion of the apron reinforcement 27.

  By the way, as shown in FIGS. 1 and 2, in the vicinity of the above-described front cross member 21, a radiator 31 having a cooling fan 30 at the rear is disposed between the pair of left and right front side frames 20, 20. It is inclined and arranged in a high shape. Here, the radiator 31 and the cooling fan 30 described above are integrated to constitute a radiator unit. The radiator unit is disposed in front of the engine 32 described below.

  As shown in FIGS. 1 to 3, a power train unit 34 (which includes an engine 32 (vertical engine) as an internal combustion engine and a transmission 33 is provided at the rear of the engine room 1 and the outside of the tunnel portion 10. (Hereinafter simply abbreviated as “powertrain”). The power train 34 is disposed corresponding to the above-described dash central recess 3A, and a so-called front is provided by reversing the engine 32 and the transmission 33 as heavy objects as far as possible in the center in the vehicle front-rear direction.・ Mid-ship engine vehicle, designed to reduce yaw moment of inertia and improve steering stability. Here, a reciprocating engine or a rotary engine can be used as the engine 32 described above.

  Further, a propeller shaft 36 for transmitting the output of the transmission 33 to the rear differential device 35 is provided on the vehicle exterior side of the tunnel portion 10 described above, and the differential output of the rear differential device 35 is extended to the left and right extending in the vehicle width direction. This is configured to transmit to the left and right rear wheels 38, 38 via the drive shafts 37, 37 (see FIG. 3), thereby forming an FR (front engine rear wheel drive) type vehicle.

  On the other hand, as shown in FIG. 1 and FIG. 2, the vehicle extends to the rear continuously from the front nose portion 39 and the front nose portion 39 extending from the front to the rear of the vehicle in a slanted manner. An intermediate nose portion 40 that forms the front outer surface of the vehicle body, and a front window panel that covers the front of the vehicle compartment 2 provided behind the intermediate nose portion 40 so that the outside of the vehicle can be visually recognized (agrees with the front window glass, below) 41 (abbreviated simply as “front window”).

  The above-described front window 41 covers the front window opening formed between the left and right front pillars 42, 42 shown in FIG. 4, the front end of the roof portion 43, and the upper end of the cowl portion 69 (see FIG. 11). The lower end portion of the front window 41 is supported by a cowl panel 70 constituting a cowl portion 69 (see FIG. 11). The cowl panel 70 is attached to the upper part of the dash lower panel 3 via a dash upper plate panel 71.

  Further, an upper nose portion 44 extending in the vehicle width direction is provided above the front nose portion 39 and spaced apart by a predetermined distance. The upper nose portion 44 is composed of a foamed urethane member 45 as an EA member (energy absorber member) capable of absorbing energy, and a resin outer skin 46 covering the outside of the foamed urethane member 45, and is formed in the vertical direction. Is provided so as to be capable of absorbing energy.

  As shown in FIGS. 1 and 2, a rectifying passage 47 is formed between the upper surface of the front nose portion 39 and the lower surface of the upper nose portion 44 so as to allow running air to flow therethrough. That is, the upper nose portion 44 of this embodiment is configured to serve as a bumper function, a spoiler function, and a pedestrian protection function.

  On the other hand, as shown in FIGS. 1 and 2, this vehicle is configured so that the opening of the rear luggage compartment 48 above the rear floor 9 is covered with a rear gate 50 (opening / closing member) having a rear gate window 49 so as to be freely opened and closed. The rear luggage compartment 48 communicates with the interior of the passenger compartment 2, and the rear gate 50 is opened to facilitate loading and unloading of luggage.

1-4, 51 is a steering wheel, 52 is an instrument panel, 53 is a steering rack, 54 is a sub-frame, 55 is a front wheel stored in the wheel house 25 so that steering is possible.
On the other hand, as shown in FIG. 3, a driver's seat 56 and a passenger seat 57 are juxtaposed in the vehicle width direction inside the passenger compartment 2 behind the dash lower panel 3 and the instrument panel 52. The driver seat 56 is disposed on the left side of the vehicle corresponding to the left dash side 3B (the other dash side) and the steering wheel 51. The driver seat 56 includes a seat cushion 56C and a seat back 56B. I have.

  The passenger seat 57 is disposed on the right side of the vehicle corresponding to the right divided dash side 4 (one dash side) and the air conditioning unit 60 described later, and the passenger seat 57 includes a seat cushion 57C and a seat back. 57B.

  Left and right rear seats 58 and 58 (rear row seats) each having a seat cushion 58C and a seat back 58B are disposed behind the front row seat including the driver seat 56 and the passenger seat 57. Here, each of the sheets 56, 57, 58, 58 in each row is constituted by a separate sheet (bucket sheet).

  5 is an enlarged plan view of the main part of FIG. 3, FIG. 6 is an enlarged plan view of the main part of FIG. 5, and FIG. 7 is a perspective view showing the air conditioning unit arrangement structure of the vehicle. A dash center recess 3A for disposing the train 34 is provided, and a dash side portion 3B extending from the front end of the dash center recess 3A to the left side in the vehicle width direction (driver's seat side) is provided, and the front side frame 20 extends from the front end of the dash center recess 3A. Is provided with a dash side piece 3b extending to the right side (passenger seat side) in the vehicle width direction by a predetermined amount corresponding to the position.

Moreover, as shown in FIGS. 5-7, the above-mentioned dash lower panel 3 is provided with the division | segmentation dash side part 4 formed by dividing | segmenting separately from dash center recessed part 3A.
The divided dash side portion 4 (one dash side portion) is an extension portion that extends forward along the upper portion of the right front side frame 20, and the divided dash side portion 4 is the same as the front side frame 20. It is joined to the top.

As shown in FIG. 3, the divided dash side portion 4 located on the passenger seat side is disposed offset from the dash side portion 3B on the other driver seat side in front of the vehicle. That is, the dash lower panel 3 is formed asymmetrically in plan view.
Further, the above-described divided dash side portion 4 (one dash side portion) is a vertical extension extending in the vehicle front-rear direction along the side of the power train 34, particularly the engine 32, as shown in perspective views in FIGS. 7 and 9. A wall portion 4a, a lateral wall portion 4b extending outward from the front end of the vertical wall portion 4a in the vehicle width direction and extending to an upper portion of the wheel house 25 in which a front wheel 55 (see FIG. 3) is stored, and a vehicle width of the lateral wall portion 4b A joining piece 4c extending rearward from the outer end in the direction, a joining piece 4d extending rearward from the lower end of the lateral wall portion 4b along the upper shape of the wheel house 25, and an upper shape of the front side frame 20 from the lower end of the vertical wall portion 4a. A joint piece 4e extending inward in the vehicle width direction so as to extend along the vehicle width direction, and a joint piece 4f extending inward in the vehicle width direction along the front shape of the dash side piece 3b from the rear end of the vertical wall portion 4a. 4a-4f It is obtained by forming.

  Then, as shown in FIGS. 5, 6, and 7, the above-mentioned joining piece 4f is joined and fixed to the front surface of the dash side piece 3b by welding or the like, and the joining piece 4e is attached to the upper part of the front side frame 20 by welding or the like. By joining and fixing, the rigidity of the dash joint portion of the front side frame 20 is improved, and the strength of the front side frame 20 is improved.

  Further, the joining piece 4d is joined and fixed to the upper portion of the wheel house 25 and the upper portion of the front side frame 20 by welding or the like to improve the strength of the wheel house 25, and the lateral wall portion 4b is attached to the rear portion of the suspension tower 26 by welding or the like. The suspension is fixedly connected to improve the rigidity of the suspension tower 26. Further, the suspension rigidity of the suspension suspension 26 is improved, and the suspension tower 26 is prevented from falling down.

Further, the joining piece 4c is joined and fixed to the inner side in the vehicle width direction of the apron reinforcement 27 as a vehicle body strength member by welding or the like, so that the strength of the apron reinforcement 27 is improved and the divided dash side part 4 It is configured to achieve both improved support rigidity.
The above-described divided dash side portion 4 (one dash side portion) is connected and fixed to the apron reinforcement 27 as the vehicle body rigid member and the front side frame 20, and the joining piece 4 d is joined to the wheel house 25. As a result, the supporting strength of the divided dash side portion 4, in particular, the lateral wall portion 4 b is improved, and the lateral wall portion 4 b having high supporting strength is connected and fixed to the suspension tower 26 to prevent the suspension tower 26 from falling down. It is configured accordingly.

Here, the above-described divided dash side portion 4 (one dash side portion) is disposed so as to partition the engine compartment 1 in the vehicle width direction.
Instead of the divided dash side portion 4 (one dash side portion) shown in FIG. 9, the divided dash side portion 4 shown in FIG. 10 may be used.

  In addition to the configuration shown in FIG. 9, the divided dash side portion 4 shown in FIG. 10 includes at least one bead between the vertical wall portion 4 a close to the suspension tower 26 and the joining piece 4 e, and a plurality of beads in this embodiment. 4g and 4g are integrally formed, and this structure is configured to better prevent the suspension tower 26 from falling inward without increasing the number of parts. 10, the same parts as those in FIG. 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

Incidentally, as shown in FIGS. 5 to 8, 11, and 12, at least a part of the air conditioning unit 60 is disposed in the space on the side opposite to the engine room 1 of the divided dash side portion 4.
As shown in each of these drawings, an air conditioning unit 60 includes an evaporator 61 that cools the inside and outside air by removing heat from the surroundings, and a heater core that heats the inside and outside air with engine cooling water after cooling the engine 32. 62, an air mix unit 63 (so-called air distribution box) that has a plurality of doors (not shown) inside and switches the air distribution direction of the conditioned air, and a blower that blows the introduced inside and outside air backward The above-described evaporator 61 and heater core 62 constitute a heat exchanger unit 65. Here, the above-described blower unit 64 includes an inside / outside air suction port 64a, a blower port 64b, and a blower motor 64M.

The air-conditioning unit 60 described above includes the side of the vehicle compartment 2 behind the vehicle front-rear direction position corresponding to the front-rear position of the other dash side portion 3B (see the position of the dash side piece 3b) and the divided dash side portion 4. The blower unit 64 described above is disposed on the side of the divided dash side portion 4.
That is, in the air conditioning unit 60 including the heat exchanger unit 65, the air mix unit 63, and the blower unit 64, the blower unit 64 is disposed at the front portion, and the blower unit 64 is disposed on the side of the divided dash side portion 4 described above. Has been established.

Further, as shown in plan views in FIGS. 5 and 6, the heat exchanger unit 65 and the air mix unit 63 described above are arranged in parallel in the vehicle width direction behind the blower unit 64, and are divided dashes. The air conditioning unit 60 including the heat exchanger unit 65, the air mix unit 63, and the blower unit 64 is configured to be laid out in a compact manner in a limited space between the side portion 4 side and the passenger compartment 2 side. is doing.
That is, the air conditioning unit 60 includes a blower unit 64, a heat exchanger unit 65, and an air mix unit 63. The heat exchanger unit 65 and the air mix unit 63 are arranged behind the blower unit 64, and The blower unit 64 is disposed in the vehicle front-rear direction.

The air conditioning unit 60 and the cowl side portion 29 are partitioned by a divided dash extension 3C as shown in FIGS. 5 and 6, while the divided dash extension 3C and the dash side piece 3b. In order to arrange the air-conditioning unit 60 continuously in the front-rear direction, a communication portion 3D is formed.
As shown in FIGS. 6, 11, and 12, the evaporator 61, the heater core 62, the air mix unit 63, and the blower unit 64 are surrounded by a housing 60 a of the air conditioning unit 60.

  An intake duct 72 is provided inside the housing 60a. The intake duct 72 includes a duct portion 72a (upstream duct portion) extending in the longitudinal direction of the vehicle, and a duct portion 72b (downstream duct portion) extending downward from the vehicle front end side of the duct portion 72a to the suction port 64a of the blower unit 64. ), A duct portion 72c (outside air introduction duct portion) extending obliquely forward and obliquely upward from the rear portion of the duct portion 72a and leading out of the housing 60a into the cowl box 73, and from the rear portion of the duct portion 72a, A duct portion 72d (inside air introduction duct portion) extending rearward on the extended line of the duct portion 72a is integrally formed.

Further, in the cowl portion 69 formed above the dash lower panel 3 described above, the above-described cowl panel 70 is formed with an outside air introduction port 70a for introducing outside air, and in the cowl portion 69, the duct portion 72c is formed. An external air intake port 74 is formed at the upper end, and an internal air intake port 75 for taking in indoor air is formed at the rear end of the duct portion 72d at the rear of the dash lower panel 3, and the internal air intake port 75 is formed in the housing. The rear surface of 60a is substantially flush with the rear surface.
Further, the intake duct 72 described above is provided with an air intake path 76 to the suction port 64a of the blower unit 64 therein.

Here, the evaporator constituting the heat exchanger unit 65 is made close to the air passage (see the internal space of each duct portion 72c, 72a, 72b) connecting the above-described outside air intake port 74 and the suction port 64a of the blower unit 64. 61, a heater core 62 is provided.
Further, the evaporator 61 constituting the heat exchanger unit 65 is placed close to an air passage (see the internal space of each duct part 72d, 72a, 72b) connecting the above-described inside air intake port 75 and the suction port 64a of the blower unit 64. The heater core 62 is disposed.

In this embodiment, the evaporator 61 and the heater core 62 described above are disposed close to each other immediately below the upstream duct portion 72a extending in the longitudinal direction of the vehicle.
Further, a pre-cooling opening 77 is formed on the lower surface of the upstream duct portion 72a constituting a part of the above-described air intake path 76 so as to correspond to the evaporator 61, and a pre-heating opening corresponding to the heater core 62 is formed. An opening 78 is formed. These openings 77 and 78 are formed to be separated from each other in the vehicle longitudinal direction corresponding to the layout of the evaporator 61 and the heater core 62.

  Further, a slider 80 as an opening / closing member that slides along a guide portion 79 provided in the duct portion 72a is provided on the lower surface portion of the upstream duct portion 72a. The slider 80 has two openings 80a and 80b separated from each other in the front-rear direction. As shown in FIG. 11, when the slider 80 is slid backward by the operation of an operation member (such as a wire and a link) or an actuator (not shown), The opening 80b and the preheating opening 78 communicate with each other, and the precooling opening 77 is closed. Thereby, the introduction air can be preheated by the hot air of the heater core 62.

  As shown in FIG. 12, when the slider 80 is slid forward by the operation of an operation member (wire, link, etc.) or an actuator (not shown), the opening 80a and the pre-cooling opening 77 communicate with each other. The opening 78 is closed. Thereby, the introduced air can be pre-cooled by the cool air of the evaporator 61.

Instead of the opening / closing structure of the openings 77 and 78 shown in FIGS. 11 and 12, an opening / closing structure shown in FIG. 13 may be adopted.
The opening / closing structure shown in FIG. 13 is provided with doors 81 and 82 as opening / closing members that independently open and close the openings 77 and 78 below the openings 77 and 78. If comprised in this way, since each opening part 77 and 78 can be opened and closed separately by the effect | action of the said doors 81 and 82, when the opening part 77 for precooling is opened, introduction air can be precooled and preheating is carried out. When the opening 78 is opened, the introduced air can be preheated.
In FIG. 13, the same parts as those in FIGS. 11 and 12 are denoted by the same reference numerals, and detailed description thereof is omitted.

By the way, as shown in FIGS. 5 and 8, a defroster communicating portion 83, a vent communicating portion 84 on the driver's seat side, and a vent communicating portion 85 on the passenger seat side are provided in the downstream portion (air blowing side) of the air mix unit 63. Is connected.
A defroster duct 87 having a large number of defroster outlets 86, 86... Is connected to the above-described defroster communication portion 83 so as to prevent the front window 41 from being fogged.

Further, a vent duct 88 is connected to the vent communication portion 84 on the driver's seat side, and the conditioned air is blown out from the vent outlets 89 and 89 formed in the vent duct 88 toward the driver. .
Further, a vent duct 90 is connected to the above-described vent communication portion 85 on the passenger seat side, and the conditioned air is blown out from the vent outlets 91 and 91 formed in the vent duct 90 toward the passenger. . In FIGS. 5 and 8, reference numerals 92 and 93 denote rear-seat air-conditioning air connections, and ducts (not shown) are connected to the connection parts 92 and 93 to form an air-conditioning path for rear-seat passengers. Is.

On the other hand, as shown in FIGS. 3, 5, and 6, the above-described divided dash side portion 4 is disposed so as to surround the air conditioning unit 60 so as to partition the air conditioning unit 60 from the engine room 1. In addition, the divided dash side portion 4 includes a heat-resistant wall portion (see the vertical wall portion 4a) that extends in the front-rear direction along the right side portion of the engine 32 and isolates the air-conditioning unit 60 from the air-conditioning unit 60. The unit 60 is configured to prevent the influence of heat damage and dust damage from the engine room 1 side.
In FIG. 8, 94 is a gusset for connecting the floor frame 17 and the side sill 11 in the vehicle width direction. In the drawing, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, and arrow IN indicates the vehicle. An inward direction is indicated, and an arrow OUT indicates the outward direction of the vehicle.

  As described above, the air conditioning unit arrangement structure of the vehicle of the above embodiment is provided with the dash lower panel 3 that partitions the vehicle compartment 2 and the engine room 1 in the vehicle front-rear direction, and the dash lower panel 3 is recessed toward the rear of the vehicle. A dash central recess 3A provided with a power train 34 for driving a wheel (see rear wheel 38) and dash side portions 3B, 4 extending on both sides of the dash central recess 3A in the vehicle width direction, An air conditioning unit arrangement structure for a vehicle in which an air conditioning unit 60 including a blower unit 64 and a heat exchanger unit 65 is arranged on either side of the dash side portions 3B and 4 in the vehicle width direction. The blower unit 64 and the heat exchanger unit 65 are arranged in the vehicle front-rear direction, and are close to the air intake path 76 to the blower unit 64 so as to form the heat exchanger. In which knit 65 is disposed (FIG. 2, FIG. 3, see FIG. 11).

According to this configuration, since the power train 34 is disposed in the dash center recess 3A, the air conditioning unit 60 is disposed on either one side (refer to the passenger seat side) of the dash side portions 3B and 4 in the vehicle width direction. It is possible to achieve both the rear shift layout of the power train 34 and the arrangement of the air conditioning unit 60 while suppressing the influence on the passenger compartment 2. The rear shift layout of the power train 34 reduces the yaw moment of inertia. You can plan.
Moreover, since the blower unit 64 and the heat exchanger unit 65 are disposed in the vehicle front-rear direction, and the heat exchanger unit 65 is disposed in the vicinity of the air intake path 76 to the blower unit 64, the air conditioning unit 60 is provided. The introduction air can be preheated or precooled while being arranged in a compact manner, thereby enabling efficient air conditioning temperature control.

Further, an outside air intake port 74 is formed in a cowl portion 69 formed above the dash lower panel 3, and an air passage (which connects each of the duct portions 72 c, 72 a, 72 b) connecting the outside air intake port 74 and the blower unit 64 is formed. The heat exchanger unit 65 is disposed close to the internal space (see FIG. 11 and FIG. 12).
According to this configuration, since the outside air taken in from the outside air intake port 74 of the cowl portion 69 passes through a portion close to the heat exchanger unit 65 before reaching the blower unit 64, preheating or precooling is possible. Since the temperature difference is much larger than that of the inside air, preheating or precooling with respect to the outside air becomes more efficient.

Further, an inside air intake port 75 for taking in indoor air is formed behind the dash lower panel 3, and an air passage connecting the inside air intake port 75 and the blower unit 64 (internal spaces of the duct portions 72d, 72a, 72b). The heat exchanger unit 65 is disposed in the vicinity of (see FIG. 11 and FIG. 12).
According to this configuration, since the inside air (room air) taken in from the inside air intake port 75 behind the dash lower panel 3 passes through a portion close to the heat exchanger unit 65 before reaching the blower unit 64, it is efficiently preheated. Or pre-cooling can be performed.

In addition, one of the dash side portions 3B and 4 is disposed with an offset toward the front of the vehicle from the other dash side portion 3B. The unit 60 is disposed (see FIG. 5).
According to this configuration, the blower unit 64 and the heat exchanger unit 65 can be arranged in a compact manner without affecting the interior of the vehicle compartment 2 and the engine compartment 1.

Further, the blower unit 64 is disposed at a position forward of the other dash side portion 3B, and the heat exchanger unit 65 is disposed at a position rearward of the other dash side portion 3B (see FIG. 5). ). That is, the blower unit 64 is disposed on the front side of the general surface of the dash lower panel 3, and the heat exchanger unit 65 is disposed on the rear side of the general surface.
According to this configuration, since the blower unit 64 is disposed at the front position and the heat exchanger unit 65 is disposed at the rear position, these units 64 and 65 are not affected in the vehicle compartment 2 and the engine room 1. Since the blower unit 64 and the heat exchanger unit 65 are arranged at the front and rear, the outside air and the inside air pass through the vicinity of the heat exchanger unit 65 before reaching the blower unit 64. Thus, preheating or precooling of the introduced air can be performed.

Further, the one dash side portion 4 is formed as a divided dash side portion 4 that is formed separately from the dash center concave portion 3A (see FIG. 6).
According to this configuration, since the divided dash side portion 4 is formed separately from the dash central recess 3A, it is possible to ensure good manufacturability and assembly of the dash lower panel 3, and The dash side portion 4 can prevent the heat damage and dust damage of the engine room 1 on the air conditioning unit 60.

Further, a driver's seat 56 and a passenger seat 57 are juxtaposed in the vehicle width direction inside the passenger compartment 2 behind the dash lower panel 3, and the air conditioning unit is disposed on the dash side portion 4 corresponding to the passenger seat side. 60 is disposed (see FIG. 3).
According to this configuration, since the air conditioning unit 60 is arranged corresponding to the passenger seat side, the layout in the passenger compartment 2 (that is, securing of the living space) and the air conditioning unit are not affected without affecting the driver seat side. 60 layouts and a layout in the engine room 1 can be achieved. Further, the air conditioning unit 60 does not interfere with the steering shaft, the steering column, or the like.

Furthermore, the heat exchanger unit 65 includes an evaporator 61 and a heater core 62, a pre-cooling opening 77 corresponding to the evaporator 61 and a pre-heating opening corresponding to the heater core 62 in the air intake path 76. 78, and an opening / closing member (see the slider 80 and the doors 81 and 82) for opening and closing the openings 77 and 78 is provided (see FIGS. 11, 12, and 13).
According to this configuration, when the pre-cooling opening 77 is opened by the opening / closing member (see the slider 80 and the doors 81 and 82), the introduced air can be pre-cooled, and the opening / closing member 78 is opened by the opening / closing member. In this case, the introduced air can be preheated, and as a result, preheating and precooling can be switched appropriately.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The dash panel of the present invention corresponds to the dash lower panel 3 of the embodiment,
Similarly,
The wheels driven by the powertrain correspond to the rear wheels 38,
The driver seat corresponds to the driver seat 56,
The passenger seat corresponds to the passenger seat 57,
The opening / closing member corresponds to the slider 80 or the doors 81 and 82,
The present invention is not limited to the configuration of the above-described embodiment.
For example, in the above embodiment, the air conditioning unit arrangement structure of the vehicle is applied to a left-hand drive vehicle, but this may be applied to a right-hand drive vehicle. Moreover, in the said Example, although the main part of the air path of Claim 2 and the air path of Claim 3 was made common, you may form this in a respectively separate air path.

The side view which shows the air-conditioning unit arrangement structure of the vehicle of this invention Side view showing part of the powertrain in a broken state Plan view showing the air conditioning unit arrangement structure of the vehicle Front view showing an air conditioning unit arrangement structure of a vehicle 3 is an enlarged plan view of the main part of FIG. 5 is an enlarged plan view of the main part of FIG. Perspective view showing air conditioning unit arrangement structure Front view showing the air conditioning unit arrangement structure as seen from the passenger compartment Perspective view of split dash side The perspective view which shows the other Example of a division | segmentation dash side part Side view showing the internal structure of the air conditioning unit in the preheated air state Side view showing the internal structure of the air conditioning unit in the pre-cooled air state Side view showing another embodiment of the opening and closing member Side view showing conventional vehicle air conditioning unit arrangement structure

Explanation of symbols

1 ... Engine room 2 ... Car compartment 3 ... Dash lower panel (dash panel)
3A ... dash center recess 3B ... dash side (the other dash side)
4 ... Split dash side (one dash side)
34 ... Powertrain (Powertrain unit)
38 ... Rear wheel
56 ... Driver's seat (driver's seat)
57 ... Passenger seat (passenger seat)
60 ... Air-conditioning unit 61 ... Evaporator 62 ... Heater core 64 ... Blower unit 65 ... Heat exchanger unit 69 ... Cowl part 74 ... Outside air intake port 75 ... Inside air intake port 76 ... Air intake path 77, 78 ... Opening 80 ... Slider (open / close) Element)
81, 82 ... Door (opening / closing member)

Claims (8)

A dash panel is provided to partition the vehicle compartment and engine room in the vehicle longitudinal direction,
The dash panel is formed from a dash central recess that is recessed toward the rear of the vehicle and in which a powertrain unit that drives wheels is disposed, and a dash side that extends to both sides of the dash central recess in the vehicle width direction,
An air conditioning unit arrangement structure for a vehicle in which an air conditioning unit including a blower unit and a heat exchanger unit is arranged on either side of the dash side portion in the vehicle width direction,
The blower unit and the heat exchanger unit are disposed in the vehicle front-rear direction,
An air conditioning unit arrangement structure for a vehicle in which the heat exchanger unit is arranged close to an air intake path to the blower unit. Form an outside air intake in the cowl formed above the dash panel,
2. The air conditioning unit arrangement structure for a vehicle according to claim 1, wherein the heat exchanger unit is arranged close to an air passage connecting the outside air inlet and the blower unit. A room air intake is formed behind the dash panel to take in room air.
The air conditioning unit arrangement structure for a vehicle according to claim 1 or 2, wherein the heat exchanger unit is arranged close to an air passage connecting the inside air intake port and the blower unit. Any one dash side part of the dash side part is disposed offset from the other dash side part to the front of the vehicle,
The vehicle air conditioning unit arrangement structure according to any one of claims 1 to 3, wherein the air conditioning unit is arranged behind the one dash side portion. 5. The air conditioning unit arrangement structure for a vehicle according to claim 4, wherein the blower unit is disposed at a front position from the other dash side portion, and the heat exchanger unit is disposed at a rear position from the other dash side portion. 6. The vehicle air conditioning unit arrangement structure according to claim 4 or 5, wherein the one dash side portion is formed as a divided dash side portion formed separately from the dash central recess. On the vehicle interior side behind the dash panel, a driver seat and a passenger seat are provided side by side in the vehicle width direction,
The vehicle air conditioning unit arrangement structure according to any one of claims 4 to 6, wherein the air conditioning unit is arranged on a dash side portion corresponding to the passenger seat side. The heat exchanger unit includes an evaporator and a heater core,
In the air intake path, a pre-cooling opening corresponding to the evaporator and a pre-heating opening corresponding to the heater core are formed,
The vehicle air conditioning unit arrangement structure according to any one of claims 1 to 7, further comprising an opening / closing member that opens and closes each of the openings.

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