JP5786632B2 - Vehicle front structure - Google Patents

Description

  The present invention relates to a vehicle front structure.

  2. Description of the Related Art Conventionally, there has been known an automobile including a heat exchanger unit provided between a passenger room and a front room, and a manifold that guides air flowing from an airflow inlet provided at a front portion of the automobile to the heat exchanger unit. (For example, refer to Patent Document 1).

JP 2003-211981

  However, with this prior art, the drive shaft boot could not be cooled.

  The present invention has been made in view of the above problems, and it is possible to achieve both cooling of the cooling unit provided in the lower front part of the passenger compartment and cooling of the drive shaft boot provided in front of the cooling unit. An object of the present invention is to provide a vehicle front structure that can be used.

In order to solve the above-described problem, the vehicle front structure according to claim 1 includes a cooling unit provided at a lower front portion of a passenger compartment and cooling air taken from an opening provided at the front of the vehicle. A cooling air passage leading to the cooling unit; a drive shaft boot provided in front of the cooling unit in the cooling air passage ; and a side portion of an engine room formed in front of the vehicle compartment. And the wheel house wind guide plate provided in the wheel house, and provided in front of the drive shaft boot in the cooling air passage, and the cooling air flowing through the cooling air passage, And a wind guide portion that leads to the drive shaft boot.

  According to this vehicle front structure, the cooling air taken from the opening provided in the front of the vehicle is guided to the cooling unit by the cooling air passage, so that the cooling unit can be cooled. Moreover, since the cooling air is guided to the drive shaft boot by the air guide portion provided in the cooling air passage, the drive shaft boot can be cooled. Accordingly, both cooling of the cooling unit and cooling of the drive shaft boot can be achieved.

Moreover, according to this vehicle front part structure, since the wheel house wind guide plate is provided in the wheel house, the structure for cooling the drive shaft boot can be simplified.

The vehicle front portion structure according to claim 2 is the vehicle front portion structure according to claim 1 , wherein the air guide portion is provided on an under cover that covers an engine provided in front of the vehicle compartment from below. The under cover has a wind guide plate.

  According to this vehicle front part structure, since the undercover air guide plate is provided in the undercover, the structure for cooling the drive shaft boot can be simplified.

The vehicle front structure according to claim 3 is the vehicle front structure according to claim 2 , wherein the undercover wind guide plate includes an exhaust pipe support rubber joint that supports an exhaust pipe connected to the engine. It is an integrated configuration.

  According to this vehicle front structure, since the undercover wind guide plate is integrated with the exhaust pipe support rubber joint, the under cover wind guide plate and the exhaust pipe support rubber joint are provided at different locations. Compared to the case, the structure can be simplified.

  As described above in detail, according to the present invention, it is possible to achieve both cooling of the cooling unit provided in the lower front part of the passenger compartment and cooling of the drive shaft boot provided in front of the cooling unit.

It is a perspective view of the vehicle front part structure concerning one embodiment of the present invention. It is side surface sectional drawing of the vehicle front part structure shown by FIG. FIG. 2 is a plan sectional view of the vehicle front structure shown in FIG. 1. It is a perspective view which shows the modification of the vehicle front part structure shown by FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In each figure, an arrow UP, an arrow FR, and an arrow OUT indicate the vehicle vertical direction upper side, the vehicle front-rear direction front side, and the vehicle width direction outer side, respectively.

  As shown in FIG. 1, a vehicle front structure 10 according to an embodiment of the present invention includes a cooling unit 14 provided in a lower front portion of a vehicle compartment 12. The cooling unit 14 is, for example, a radiator or a condenser of an air conditioner. As shown in FIG. 2, a tunnel portion 18 that bulges on the vehicle upper side and extends in the vehicle front-rear direction is provided at the center in the vehicle width direction of the floor panel 16 constituting the floor portion of the passenger compartment 12. The cooling unit 14 is disposed in the front end opening of the tunnel portion 18.

  A cooling air passage 20 is provided in front of the cooling unit 14. The front bumper cover 22 provided at the front of the vehicle is formed with an opening 24 that opens in the vehicle front-rear direction. The cooling air passage 20 supplies the cooling air taken from the opening 24 to the cooling unit 14. It is supposed to be a guiding structure. Specifically, the cooling air passage 20 includes a lower surface of an engine 28 housed in an engine room 26 formed in front of the vehicle compartment 12, an under cover 30 that covers the engine 28 from below, and an opening 24. The duct portion 32 extends from the peripheral portion to the rear side of the vehicle, and a pair of wheel houses 34 and 36 provided on the side portions on both sides of the engine room 26.

  A drive shaft 38 that transmits the driving force of the engine 28 to the front wheels is provided between the cooling unit 14 and the engine 28. The drive shaft 38 is disposed with the vehicle width direction as an axial direction. A rubber drive shaft boot 40 is provided at an intermediate portion of the drive shaft 38 in the vehicle width direction (a portion located between the pair of wheel houses 34 and 36). The drive shaft boot 40 covers a joint portion (not shown) provided on the drive shaft 38. The drive shaft boot 40 is provided in front of the cooling unit 14 in the cooling air passage 20.

  The cooling air passage 20 is provided with a first wheel house air guide plate 42, a second wheel house air guide plate 44, and an undercover air guide plate 46, which are examples of air guide portions. . The first wheel house wind guide plate 42, the second wheel house wind guide plate 44, and the undercover wind guide plate 46 are provided in front of the drive shaft boot 40 inside the cooling air passage 20.

  The first wheel house wind guide plate 42 and the second wheel house wind guide plate 44 are provided in each wheel house 34, 36. That is, the first wheel house wind guide plate 42 and the second wheel house wind guide plate 44 are formed integrally with the wheel houses 34 and 36 or separated from the wheel houses 34 and 36. Above, it is being fixed to each wheel house 34 and 36 integrally.

  The first wheel house wind guide plate 42 has a main body portion 42A extending in the vehicle front-rear direction with the vehicle width direction as the plate thickness direction, and extends inward in the vehicle width direction (drive shaft boot 40 side) from the rear end portion of the main body portion 42A. An intermediate portion 42B and a rear portion 42C extending from the end of the intermediate portion 42B on the inner side in the vehicle width direction to the vehicle rear side are provided. On the other hand, the second wheel house wind guide plate 44 has a main body portion 44A extending in the vehicle front-rear direction with the vehicle width direction as the plate thickness direction, and is formed on the rear side of the main body portion 44A and extends toward the rear side of the vehicle. And a rear portion 44B that curves toward the drive shaft boot 40 side.

  The undercover air guide plate 46 is provided on the undercover 30. The undercover air guide plate 46 is formed integrally with the undercover 30, or is separated from the undercover 30 and fixed integrally with the undercover 30. The undercover air guide plate 46 extends from the undercover 30 toward the engine 28 (the vehicle upper side) and extends in the vehicle front-rear direction.

  The undercover air guide plate 46 is disposed between the pair of wheel houses 34 and 36 in the vehicle width direction, and more specifically, between the pair of wheel houses 34 and 36 in the vehicle width direction. It is shifted from the center part toward the other wheel house 36 side. The undercover air guide plate 46 has a front portion 46A that is directed inward in the vehicle width direction (drive shaft boot 40 side) as it goes toward the vehicle rear side, and a rear portion 46B that is formed on the rear side of the front portion 46A and extends in the vehicle longitudinal direction. And have. A part 48 </ b> A of an exhaust pipe 48 connected to the engine 28 is routed between the undercover air guide plate 46 and the second wheel house air guide plate 44.

  In the vehicle front structure 10, the cooling air W flowing through the cooling air passage 20 is guided to the drive shaft boot 40 by the pair of wheel houses 34 and 36 and the undercover air guide plate 46. .

  Next, the operation and effect of one embodiment of the present invention will be described.

  According to the vehicle front structure 10, the cooling air W taken from the opening 24 provided in the front of the vehicle is guided to the cooling unit 14 by the cooling air passage 20, thereby cooling the cooling unit 14. be able to. Further, since the cooling air W is guided to the drive shaft boot 40 by the first wheel house air guide plate 42, the second wheel house air guide plate 44, and the under cover air guide plate 46 provided in the cooling air passage 20, The drive shaft boot 40 can be cooled. Therefore, both the cooling of the cooling unit 14 and the cooling of the drive shaft boot 40 can be achieved.

  In addition, since the first wheel house wind guide plate 42, the second wheel house wind guide plate 44, and the under cover wind guide plate 46 are provided in the wheel houses 34 and 36 and the under cover 30, respectively, the drive shaft boot The structure for cooling 40 can be simplified.

  Next, a modification of one embodiment of the present invention will be described.

  In the above embodiment, the opening 24 is opened in the front bumper cover 22, but may be opened in a member other than the front bumper cover 22.

  Further, the cooling air passage 20 is configured by the lower surface of the engine 28, the under cover 30, the duct portion 32, the pair of wheel houses 34, 36, and the like, but may be configured by other members and the like. .

  In the above embodiment, the cooling air is guided to the cooling unit 14 by the first wheel house wind guide plate 42, the second wheel house wind guide plate 44, and the under cover wind guide plate 46. The cooling air may be guided to the cooling unit 14 by other air guide portions. Further, the air guide portion may be other than a plate-like member.

  Further, as shown in FIG. 4, the undercover air guide plate 46 may be integrated with a joint 60 of an exhaust pipe support rubber 62 that supports an exhaust pipe 48 connected to the engine 28. In this case, the undercover air guide plate 46 is formed integrally with the joint 60 of the exhaust pipe support rubber 62 or separated from the joint 60 of the exhaust pipe support rubber 62 and then the exhaust pipe support rubber. It may be fixed integrally to 62 joints 60. Further, the joint 60 of the exhaust pipe support rubber 62 may be a member for suppressing vibration transmission of the exhaust pipe 48, or may be a member for suppressing heat transfer of the exhaust pipe 48. good.

  Thus, when the undercover air guide plate 46 is integrated with the joint 60 of the exhaust pipe support rubber 62, the undercover air guide plate 46 and the joint 60 of the exhaust pipe support rubber 62 are provided at different locations. The structure can be simplified as compared with the case where it is provided.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

DESCRIPTION OF SYMBOLS 10 Vehicle front part structure 12 Car compartment 14 Cooling unit 20 Cooling air passage 24 Opening part 26 Engine room 28 Engine 30 Under cover 34,36 Wheel house 38 Drive shaft 40 Drive shaft boot 42 First wheel house wind guide plate 44 Second wheel House wind guide plate 46 Undercover wind guide plate 48 Exhaust pipe 60 Exhaust pipe support rubber joint 62 Exhaust pipe support rubber

Claims (3)

A cooling unit provided in the lower front part of the passenger compartment;
A cooling air passage for guiding cooling air taken from an opening provided in the front of the vehicle to the cooling unit;
A drive shaft boot provided in front of the cooling unit in the cooling air passage;
A wheel house provided in a side part of the engine room formed in front of the vehicle compartment;
A wheel house wind guide plate provided in the wheel house, and provided in front of the drive shaft boot inside the cooling air passage, guides the cooling air flowing through the cooling air passage to the drive shaft boot. A wind guide,
Vehicle front structure with The wind guide portion includes an under cover wind guide plate provided in an under cover that covers an engine provided in front of the vehicle compartment from below.
The vehicle front structure according to claim 1. The undercover air guide plate is integrated with an exhaust pipe support rubber joint that supports an exhaust pipe connected to the engine.
The vehicle front structure according to claim 2 .