JP6222444B2 - Vehicle front structure - Google Patents

Description

  The present invention relates to a vehicle front structure, and more particularly to a vehicle front structure equipped with a heat exchanger.

The vehicle includes a bumper member disposed at a front portion of the vehicle, a heat exchanger disposed at the rear of the bumper member, and a main body portion extending from the vicinity of the center in the vehicle width direction of the engine room to the vicinity of the outer end in the vehicle width direction, There is a structure having a fixing means for supporting the heat exchanger on the vehicle body. This fixing means is arrange | positioned at two upper parts and two lower parts of a heat exchanger, respectively.
As such a vehicle front structure, for example, there are the following prior art documents.

JP 2006-21700 A

  The vehicle front structure according to Patent Document 1 is a structure in which the fixed state on the lower end side of the heat exchanger is released when an external force of a predetermined level or more is applied to the heat exchanger toward the vehicle rear side. When the bumper member moves backward due to a severe collision, the heat exchanger interferes with the bumper force by pushing the lower part of the heat exchanger to the rear of the vehicle with a stay fixed to the bumper member and moving the lower part of the heat exchanger to the rear of the vehicle. It is to prevent that.

By the way, in a small vehicle in which the engine and the transmission are placed horizontally in the engine room, the length of the heat exchanger in the vehicle width direction is set to about half the length of the engine room in the vehicle width direction. Often the gear is placed in front of the transmission. Further, at the time of a vehicle offset collision, the outer end of the bumper member in the vehicle width direction is the largest and moves rearward of the vehicle.
For this reason, in a vehicle in which the heat exchanger is offset from the vehicle width direction center to the vehicle width direction outer side, the lower part of the heat exchanger is simply moved rearward at the time of the vehicle offset collision as in the structure of Patent Document 1 described above. However, it is difficult to sufficiently protect the heat exchanger, and the structure thereof is complicated, and improvement has been desired.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle front structure that can protect a heat exchanger with a simple structure in the event of a vehicle offset collision.

The present invention includes a bumper member disposed at a front portion of a vehicle, a heat exchanger disposed at the rear of the bumper member and having a main body portion extending from the vicinity of the center portion of the engine room in the vehicle width direction to the vicinity of the outer end of the vehicle width direction, Fixing means for supporting the heat exchanger on the vehicle body, the fixing means being disposed at two upper portions and two lower portions of the heat exchanger, respectively, in the vehicle width direction side portion of the engine room and the heat In the vehicle front structure in which a battery is arranged behind the exchanger, when the heat exchanger is viewed from the front of the vehicle, the fixing means is in the vehicle width direction of the engine room in the vehicle width direction of the heat exchanger. It consists of a pair of upper and lower first fixing means disposed in the vicinity of the center part and a pair of upper and lower second fixing means for supporting the vehicle width direction outer side part of the heat exchanger. direction When the rotating shaft that extends extends and supports the heat exchanger so as to be rotatable around the rotating shaft and the outer side in the vehicle width direction of the heat exchanger is pushed rearward by a predetermined force or more, the second A fixing means and the heat exchanger are configured to be unfixed, and a side plate having a front end extending in the vicinity of the bumper member is attached to an outer side portion of the heat exchanger in the vehicle width direction . A reserve tank for storing cooling water is fixed to the rear part via a fan shroud of the heat exchanger, and the reserve tank is disposed behind the side plate and in front of the battery .

  The present invention has a simple structure and can protect the heat exchanger at the time of a vehicle offset collision.

FIG. 1 is a plan view of the front portion of the vehicle. (Example) FIG. 2 is an enlarged plan view of the vicinity of the heat exchanger at the front of the vehicle in FIG. (Example) FIG. 3 is an enlarged front view around the heat exchanger at the front of the vehicle in FIG. (Example) FIG. 4 is a sectional view of the first fixing means. (Example) FIG. 5 is a sectional view of the second fixing means. (Example) FIG. 6 is a perspective view of the second fixing means. (Example) FIG. 7 is a plan view showing a state in which the heat exchanger has moved during an offset collision of the vehicle. (Example)

  The present invention aims to protect the heat exchanger in the case of a vehicle offset collision with a simple structure, in order to protect the heat exchanger through the side plate when the vehicle width direction outer side portion of the bumper member moves rearward due to the vehicle offset collision. This is realized by pushing the outer portion of the exchanger in the vehicle width direction toward the rear of the vehicle.

1 to 7 show an embodiment of the present invention.
As shown in FIG. 1, a vehicle 1 is a small vehicle, and as a vehicle body 2, a left side member 3 disposed in the vehicle front-rear direction, and a right side member 4 disposed in parallel with the left side member 3 A bumper member 5 which is disposed in the front portion of the vehicle 1 and in the vehicle width direction and connects the front end of the left side member 3 and the front end of the right side member 4, and the left side member 3 and the right side member behind the bumper member 5 4 and a lower member 6 disposed in the vehicle width direction.
An engine room 7 is formed in the front portion of the vehicle 1 by the left side member 3, the right side member 4, and the bumper member 5.
In the engine room 7, a power unit 10 in which an engine 8 and a transmission 9 are integrated is arranged horizontally.
A heat exchanger (radiator) 11 is disposed in the engine room 7 in front of the transmission 9.
The heat exchanger 11 is disposed behind the bumper member 5 and above the lower member 6, and the main body portion 12 extends from the vicinity of the vehicle width direction center portion C of the engine room 7 to the vicinity of the vehicle width direction outer end (left end). It is arranged to extend.
The heat exchanger 11 includes a fan shroud 13 and a fan 14 disposed in the fan shroud 13 at the rear part of the main body 12.
Further, a battery 15 is disposed in the engine room 7 between the transmission 9 and the heat exchanger 11.

The heat exchanger 11 is supported by the vehicle body 2 by the fixing means 16.
The fixing means 16 is disposed at two upper portions and two lower portions of the heat exchanger 11, respectively.
Specifically, as shown in FIG. 1 and FIG. 3, the fixing means 16 has a vehicle width direction center portion of the engine room 7 in the vehicle width direction of the heat exchanger 11 when the heat exchanger 11 is viewed from the front of the vehicle. A pair of upper and lower first fixing means 17A and 17B disposed in the vicinity of C and a pair of upper and lower second fixing means 18A and 18B that support the vehicle width direction outer side portion (left part) 11G of the heat exchanger 11 are provided.

As shown in FIG. 4, the pair of upper and lower first fixing means 17 </ b> A and 17 </ b> B includes first pins 19 </ b> A and 19 </ b> B that protrude from the main body 12 of the heat exchanger 11.
The upper first pin 19 </ b> A is held by the first mount rubber 21 at the tip of the first stay 20, and the first stay 20 is attached to the vehicle body 2 by the first bolt 22 and the first nut 23. Elastically supported.
The lower first pin 19B is inserted into a first mounting hole 24 formed in the lower member 6 as shown in FIG.

As shown in FIGS. 5 and 6, the pair of upper and lower second fixing means 18 </ b> A and 18 </ b> B are connected to the second pins 25 </ b> A and 25 </ b> B protruding from the main body 12 of the heat exchanger 11 and the second pins 25 </ b> A and 25 </ b> B. It consists of clamp parts 26A and 26B.
The upper second pin 25 </ b> A is held by the second mount rubber 28 at the tip of the second stay 27, and the second stay 27 is attached to the vehicle body 2 by the second bolt 29 and the second nut 30. Elastically supported.
As shown in FIGS. 5 and 6, the upper clamp portion 26 </ b> A has an inverted U-shaped cross section and is fitted into the main body portion 12 from above the upper portion of the main body portion 12.
As shown in FIG. 3, the lower second pin 25 </ b> B is inserted into a second mounting hole 31 formed in the lower member 6.
As shown in FIG. 3, the lower clamp portion 26 </ b> B has a U-shaped cross section and is fitted into the main body portion 12 from below the lower portion of the main body portion 12.
Further, the upper and lower clamp portions 26A and 26B are detached from the main body portion 12 when the vehicle width direction outer side portion (left portion) 11G of the heat exchanger 11 is pushed rearward with a predetermined force or more.

As shown in FIG. 3, the pair of upper and lower first fixing means 17A and 17B constitute a rotating shaft 32 extending in the vertical direction. The heat exchanger 11 is supported so as to be rotatable around the rotation shaft 32. Thereby, when the vehicle width direction outer side part (left part) 11G of the heat exchanger 11 is pushed rearward of the vehicle with a predetermined force or more, the upper and lower clamp parts 26A and 26B are detached from the main body part 12, thereby The second fixing means 18A and 18B and the heat exchanger 11 are configured to be released from being fixed.
As shown in FIGS. 1 and 2, a side plate 33 whose tip 33 </ b> A extends near the bumper member 5 is attached to the vehicle width direction outer side (left part) 11 </ b> G of the heat exchanger 11. As shown in FIGS. 2 and 3, the side plate 33 has a predetermined width and extends in the vertical direction substantially the same as the height of the heat exchanger 11, and a fan shroud as a vehicle width direction outer side portion (left portion) 11G. 13 is attached to the left side of the bumper member 5 on the vehicle width direction outer side (left side) 5G side.

With the above structure, as shown in FIG. 7, when the vehicle width direction outer side portion (left side portion) 5 </ b> G of the bumper member 5 moves rearward of the vehicle 1 due to the offset collision of the vehicle 1, the heat exchanger 11 is interposed via the side plate 33. The vehicle width direction outer side portion (left side portion) 11G is pushed rearward of the vehicle. At this time, the clamp portions 26A and 26B of the second fixing means 18A and 18B are detached from the main body portion 12, and the fixing between the second fixing means 18A and 18B and the heat exchanger 11 is released, and the heat exchanger 11 is fixed to the first fixing means. It rotates around the rotation shaft 32 constituted by the members 17A and 17B. For this reason, the vehicle width direction outer side part (left side part) 11G of the heat exchanger 11 can be largely retracted rearward of the vehicle, and the bumper member 5 can be prevented from colliding with the heat exchanger 11.
Moreover, the heat exchanger 11 can be protected by the simple structure as described above in the event of an offset collision of the vehicle 1.

Further, as shown in FIG. 2, a reserve tank 34 that stores cooling water is fixed to a rear portion of the heat exchanger 11 via a fan shroud 13 of the heat exchanger 11 by a predetermined fixing means. The reserve tank 34 is disposed behind the side plate 33. Further, as shown in FIG. 7, the reserve tank 34 is disposed on a locus on which the heat exchanger 11 rotates.
With such a structure, the heat exchanger 11 rotates around the rotation shaft 32 constituted by the first fixing members 17A and 17B at the time of the offset collision of the vehicle 1, and the vehicle width direction outer side portion 11G of the heat exchanger 11 performs heat exchange. When colliding with a component arranged behind the vessel 11, the reserve tank 34 can be used as a buffer material to absorb impact force and protect the heat exchanger 11.

  The vehicle front structure according to the present invention can be applied to various vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Left side member 4 Right side member 5 Bumper member 6 Lower member 7 Engine room 8 Engine 9 Transmission 10 Power unit 11 Heat exchanger 11G Vehicle width direction outer side part of heat exchanger 12 Heat exchanger main body part 13 Fan shroud 14 Fan 15 Battery 16 Fixing means 17A / 17B First fixing means 18A / 18B Second fixing means 19A / 19B First pin 20 First stay 21 First mount rubber 24 First mounting hole 25A / 25B Second pin 26A / 26B Clamp part 27 Second stay 28 Second mount rubber 31 Second mounting hole 32 Rotating shaft 33 Side plate 33A Side plate tip 34 Reserve tank

Claims (1)

A bumper member disposed at the front of the vehicle;
A heat exchanger that is arranged behind the bumper member and whose main body extends from the vicinity of the center in the vehicle width direction of the engine room to the vicinity of the outer end in the vehicle width direction;
A fixing means for supporting the heat exchanger on a vehicle body,
The fixing means is disposed at two upper portions and two lower portions of the heat exchanger , respectively.
In the front structure of the vehicle which is a vehicle width direction side portion of the engine room and has a battery disposed behind the heat exchanger ,
When the heat exchanger is viewed from the front of the vehicle, the fixing means includes a pair of upper and lower first fixing means disposed in the vehicle width direction of the heat exchanger and in the vicinity of the center of the engine room in the vehicle width direction, Comprising a pair of upper and lower second fixing means for supporting the vehicle width direction outer side portion of the heat exchanger,
A rotating shaft extending in the vertical direction is constituted by the pair of upper and lower first fixing means,
When the heat exchanger is supported so as to be rotatable around the rotation axis and the vehicle width direction outer side portion of the heat exchanger is pushed rearward with a predetermined force or more, the second fixing means and the heat exchanger And is configured to be fixed with
At the vehicle width direction outer side portion of the heat exchanger, a side plate is attached with a tip portion extending in the vicinity of the bumper member ,
A reserve tank for storing cooling water is fixed to a rear portion of the heat exchanger via a fan shroud of the heat exchanger,
A front structure of a vehicle, wherein the reserve tank is arranged behind the side plate and in front of the battery .

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