JP2005035407A - Mounting structure of heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a heat exchanger, smoothly releasing and absorbing impact force in the case of a collision without restraining displacement of a bonnet hood and a bumper facia when an automobile collides with an obstacle. <P>SOLUTION: In this mounting structure of a heat exchanger, the upper end of the heat exchanger (a radiator 2 and a condenser 3) is provided to freely turn backward round the lower end. The upper end of the heat exchanger is fixed to a radiator core support upper 4 through a bracket 8, and the bracket 8 is provided with a shock absorbing part 9 formed to absorb impact force in the case of automobile collision and allow the upper end of the heat exchanger to turn backward. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mounting structure for a heat exchanger mounted on an automobile.

  2. Description of the Related Art Conventionally, a heat exchanger of an automobile is mounted on an automobile in a state where pins provided on upper left and right ends are fixed to a radiator core support via a bracket or the like.

  Such heat exchangers are usually placed in close proximity to the hood and hood, so when the vehicle collides with an obstacle such as a utility pole or pedestrian, the hood hood and bumper fascia are subject to sudden displacement. There is a risk of disturbing.

  Therefore, a heat exchanger mounting structure technology in which the upper end of the heat exchanger is formed so as to be rotatable rearward around the lower end so as not to disturb the displacement of the hood hood or the bumper fascia is known (patent) Reference 1).

In addition, since the heat exchanger arranged on the front side of the radiator core support is particularly close to the bonnet hood and the bumper fascia, it is an urgent need to quickly cope with this type of heat exchanger.
JP 2001-150961 A

  However, in the conventional heat exchanger mounting structure, when the pin at the upper end of the heat exchanger is supported by the elastic support portion and a certain impact force is applied to the rear, the pin is detached and the heat exchanger In order to rotate the rearwardly, there is a problem that it does not function at all until the constant impact force is applied to the pin, and the impact force is transmitted to the rear peripheral member as it is without being relaxed.

  Since the impact force when the automobile collides with an obstacle differs depending on the situation, there may be a situation where the pin cannot be removed or a situation where the pin comes off due to vibration during traveling or when the front end module is transported or assembled.

  In addition, the recent radiator core support is integrally formed of resin or glass fiber reinforced resin, and when the radiator core support is destroyed by the impact force, the man-hours and costs required for replacing the radiator core support are It will be a burden for both.

  The present invention has been made paying attention to the above problems, and its purpose is to prevent displacement of the hood hood and bumper fascia when the automobile collides with an obstacle such as a utility pole or pedestrian. An object of the present invention is to provide a heat exchanger mounting structure capable of relaxing and absorbing the impact force at the time of the collision.

  According to the first aspect of the present invention, in the heat exchanger mounting structure in which the upper end of the heat exchanger is provided so as to be pivotable backward about the lower end, the upper end of the heat exchanger is connected to the radiator core support upper via the bracket. And an impact absorbing portion that allows the upper end of the heat exchanger to rotate backward while absorbing the impact force when the automobile collides with the bracket.

  According to a second aspect of the present invention, in the heat exchanger mounting structure according to the first aspect, the shock absorbing portion is formed in a U-shaped cross section, and a shock absorbing material is interposed in the U-shaped inside. It is characterized by.

  According to a third aspect of the present invention, in the heat exchanger mounting structure according to the first or second aspect, the bracket is integrally formed of a resin and a rib is formed inside the impact absorbing portion.

  In the first aspect of the invention, the upper end of the heat exchanger is fixed to the radiator core support upper via the bracket, and the heat exchanger of the heat exchanger is absorbed while absorbing the impact force when the automobile collides with the bracket. An impact absorbing portion that allows the upper end to rotate backward is formed.

  Therefore, the impact force when the automobile collides with the obstacle is transmitted from the hood hood or bumper fascia to the heat exchanger. At this time, the impact force is absorbed by the impact absorbing portion of the bracket, and the heat exchanger As a result, it is possible to prevent the displacement of the hood hood and the bumper fascia from being hindered, and to smoothly relax and absorb the impact force.

  Compared to the conventional invention, the impact force functioning of the shock absorbing part can be set easily and arbitrarily, and the shock absorbing part is not likely to come off when the car is running or the front end module is transported and assembled. The heat exchanger can be fixed to the radiator core support.

Further, the impact force at the time of collision is absorbed by the impact absorbing portion, so that the peripheral member and the radiator core support can be prevented from being broken.
Furthermore, the amount of displacement of the heat exchanger relative to the impact force can be set by appropriately setting the rigidity of the impact absorbing portion.

  In the invention according to claim 2, since the shock absorbing portion is formed in a U-shaped cross-sectional shape and a shock absorbing material is interposed inside the U-shaped, the shock when the automobile collides with an obstacle. The force is transmitted to the bracket via the upper end of the heat exchanger. At this time, the impact absorbing portion is crushed in the front-rear direction to absorb the impact force, and the U-shaped internal impact absorbing material is deformed. Thus, the impact force can be absorbed, and the impact force at the time of collision can be absorbed more efficiently and reduced.

  Moreover, the amount of displacement of the heat exchanger with respect to the impact force can be delicately set by appropriately setting the rigidity of the shock absorber.

  In the invention according to claim 3, since the bracket is integrally formed of resin and the rib is formed inside the impact absorbing portion, the impact force when the automobile collides with the obstacle is the same as that of the heat exchanger. It is transmitted to the bracket via the upper end. At this time, the impact absorbing part is crushed in the front-rear direction to absorb the impact force, and the rib inside the impact absorbing part is deformed to absorb the impact force. Can be absorbed and reduced more efficiently.

Further, since the bracket is integrally formed of resin, it is possible to save the labor of individually manufacturing and assembling the rib and the bracket, which are shock absorbers, and there is no possibility of the rib falling off from the bracket.
Further, the amount of displacement of the heat exchanger with respect to the impact force can be set by appropriately setting the rigidity according to the thickness of the ribs and the number of installed ribs.

  Hereinafter, embodiments of the heat exchanger mounting structure of the present invention will be described.

<Embodiment 1>
Embodiment 1 of the present invention will be described below.
FIG. 1 is an overall perspective view showing a heat exchanger mounting structure according to Embodiment 1 of the present invention, FIG. 2 is a side sectional view showing the heat exchanger mounting structure of this embodiment, and FIG. 3 is this embodiment. FIG. 4 is a diagram for explaining the operation of the heat exchanger mounting structure according to the present embodiment.

  As shown in FIGS. 1 and 2, the heat exchanger mounting structure A of the present embodiment has a radiator 2 and a condenser 3 as heat exchangers fixed in front of a radiator core support 1 as a carrier of a front end module. The

  The radiator core support 1 includes a radiator core support upper 4, a radiator core support lower 5 in parallel with the radiator core support upper 4, and a radiator core that couples both ends of the radiator core support upper 4 and the radiator core support lower 5. The support cores 6 and 6 are composed of a hood lock stay 7 that connects the center portions of the radiator core support upper 4 and the radiator core support lower 5, and the radiator core support upper 4 has a U-shaped cross section that opens to the rear side. Two mounting holes 4a and 4a described later are formed on the U-shaped front surface.

  The radiator core support lower 5 is formed with a plate-like support portion 5a protruding forward, and a pair of left and right mounting holes 5b and 5c described later are formed on the upper surface of the support portion 5a.

The radiator 2 mainly includes upper and lower tanks T1 and T2 and a core portion K in which tubes and fins are disposed between the tanks T1 and T2.
Also, pins P1 are provided at the left and right upper ends of the tank T1, respectively, while pins P2 are provided at the left and right lower ends of the tank T2.

The capacitor 3 mainly includes left and right headers H1 and H2 and a core portion K1 in which tubes and fins are disposed between the headers H1 and H2.
Also, pins P3 are provided at the upper ends of the headers H1 and H2, respectively, while pins P4 are provided at the lower ends.

The upper sides of the radiator 2 and the capacitor 3 are fixed to the radiator core support upper 4 by a bracket 8 described later.
Specifically, as shown in FIG. 2, the bracket 8 is entirely formed of a resin such as a polyamide resin, and the pin P3 of the capacitor 3 is connected to the rubber bush B3 in the mounting hole 8a formed at the front. It is inserted and fixed via.

  A pin P1 of the radiator 2 is fitted and fixed in a mounting hole 8b formed behind the mounting hole 8a via a rubber bush B1.

  A shock absorbing portion 9 having a U-shaped cross section that is formed thinner than the other portion of the bracket 8 and that opens upward is formed behind the mounting hole 8b. The bolts 10 are inserted into the mounting holes 9c formed in the U-shaped rear side wall 9b and the mounting holes 4a of the radiator core support upper 4 and fixed with the nuts 11, so that the left and right upper ends of the radiator 2 and the capacitor 3 are It is fixed to the radiator core support upper 4.

  On the other hand, on the lower side of the radiator 2 and the capacitor 3, the left and right pins P2 of the radiator 2 are fitted and fixed to the mounting holes 5b of the support portion 5a via rubber bushes B2.

  Further, the pin P4 of the capacitor 3 is fitted and fixed to the mounting hole 5c of the support portion 5a via a rubber bush B4.

  As shown in FIG. 3, the secondary catch lever 13 of the hood lock main body 12 provided on the upper portion of the hood lock stay 7 is detachably formed by the hood lock main body 12 and the bolt 14, and the secondary catch lever 13 Is installed after the radiator 2 and the capacitor 3 are assembled to the radiator core support 1.

  The thus configured radiator 2 and capacitor 3 are assembled integrally with the radiator core support 1, transported as a front end module to a vehicle body assembly factory, and assembled to the vehicle body.

Hereinafter, the operation and effect of the heat exchanger mounting structure A of the present embodiment will be described.
In the heat exchanger mounting structure A of the present embodiment, since the radiator 2 and the condenser 3 are arranged in front of the radiator core support 1, the state is particularly close to the bonnet hood and the bumper fascia which are not illustrated. It has become.

Then, the impact force when the automobile collides with an obstacle such as a utility pole or a pedestrian is transmitted to the capacitor 2 and the radiator 3 from the hood hood or bumper fascia.
At this time, as shown in FIG. 4, the upper ends of the radiator 2 and the capacitor 3 are respectively connected to the lower end pins P2 while absorbing the impact force by deforming so that the space between the side walls 9a, 9b of the shock absorber 9 of the bracket 8 is narrowed. , P4 is pivoted rearward, and as a result, the impact force can be relaxed and absorbed without disturbing the displacement of the hood hood or the bumper fascia.
Further, the impact absorbing material 9 absorbs the impact force, so that the impact force transmitted to the radiator core support upper 4 is reduced. As a result, the radiator core support 1 can be prevented from being broken.

  When the impact force is excessive, the impact absorbing portion 9 is broken and detached from the radiator core support, and as a result, the upper ends of the radiator 2 and the capacitor 3 are further rotated backward.

  Therefore, in the heat exchanger mounting structure according to the present embodiment, the shock absorber 9 formed on the bracket 8 absorbs the impact force at the time of the collision of the automobile, and is behind the upper ends of the radiator 2 and the condenser 3. Therefore, the impact force can be smoothly relaxed and absorbed without obstructing the displacement of the hood hood or the bumper fascia.

  In addition, the impact force functioning of the impact absorbing portion 9 can be easily set as compared with the conventional invention, and the impact absorbing portion 9 is not likely to come off when the vehicle is running or when the front end module is transported and assembled.

<Embodiment 2>
The second embodiment of the present invention will be described below.
The mounting structure of the heat exchanger of the present embodiment is the same as that of the first embodiment except that the shock absorber 20 is interposed inside the shock absorber 9 described in the first embodiment. Constituent members are denoted by the same reference numerals and description thereof is omitted.
FIG. 5 is a side sectional view showing the heat exchanger mounting structure according to the second embodiment of the present invention, and FIG. 6 is a view for explaining the operation of the heat exchanger mounting structure according to the present embodiment.

As shown in FIG. 5, in the heat exchanger mounting structure B of the present embodiment, the shock absorber 20 is interposed between the U-shaped side walls 9 a and 9 b of the shock absorber 9.
Specifically, the shock absorber 20 is formed in a rectangular shape with a foam such as a polyurethane foam or a polypropylene foam, and the front and back thereof are in contact with the side wall 9a and the side wall 9b of the shock absorber 9 respectively. It has become.

  In addition, the rear side of the shock absorber 20 is locked by ribs 21 that protrude from the side wall 9b forward in the left, right, and lower sides.

Hereinafter, the operation and effect of the heat exchanger mounting structure B of the present embodiment will be described.
In the heat exchanger mounting structure B of the present embodiment, the impact force when the automobile collides with an obstacle such as a utility pole or a pedestrian is transmitted from the hood hood or bumper fascia to the radiator 2 and the condenser 3.
At this time, as shown in FIG. 6, the impact absorbing portion 9 and the impact absorbing material 20 of the bracket 8 are both deformed to absorb the impact force.

  In addition, the upper ends of the radiator 2 and the capacitor 3 rotate backward about the lower pins P2 and P4, respectively. As a result, the impact force can be reduced and absorbed without hindering the displacement of the hood hood and bumper fascia. it can.

  When the impact force is excessive, the impact absorbing portion 9 is broken and detached from the radiator core support, and as a result, the upper ends of the radiator 2 and the capacitor 3 are further rotated backward.

  Therefore, in the heat exchanger mounting structure of the present embodiment, the impact force when the automobile collides can be absorbed by the impact absorbing portion 9 and the impact absorbing material 20 to be more efficiently relaxed, As a result, high impact absorption performance can be obtained, and destruction of peripheral members such as the radiator core support 1 can be avoided.

  Further, by appropriately setting the rigidity of the shock absorbing material 20, the amount of displacement of the shock absorbing portion, the radiator 2 and the capacitor 3 with respect to the impact force can be set.

<Third embodiment>
The third embodiment of the present invention will be described below.
The heat exchanger mounting structure of the present embodiment is the same as that of the first embodiment except that ribs 30 are formed between the U-shaped side walls 9a and 9b of the shock absorbing portion 9 described in the first embodiment. Therefore, the same constituent members are denoted by the same reference numerals and description thereof is omitted.
FIG. 7 is a side sectional view showing the heat exchanger mounting structure according to the third embodiment of the present invention, and FIG. 8 is a diagram for explaining the operation of the heat exchanger mounting structure according to the present embodiment.

  As shown in FIG. 7, in the heat exchanger mounting structure C of the present embodiment, the bracket 8 is integrally formed of resin, and between the U-shaped side walls 9a and 9b of the shock absorbing portion 9. A plate-like rib 30 is formed on the plate.

  Specifically, the rib 30 has an S-shaped cross-sectional shape and is integrally formed with the shock absorbing portion 9, and the thickness thereof is thinner than the side walls 9a and 9b.

Hereinafter, the operation and effect of the heat exchanger mounting structure C of the present embodiment will be described.
In the heat exchanger mounting structure C of the present embodiment, the impact force when the automobile collides with an obstacle such as a utility pole or a pedestrian is transmitted from the hood hood or the bumper fascia to the condenser and the radiator.
At this time, as shown in FIG. 8, the shock absorber 9 and the rib 30 of the bracket 8 are deformed together to absorb the impact force, and the upper ends of the radiator 2 and the capacitor 3 are centered on the lower pins P2 and P4, respectively. As a result, the impact force can be relaxed and absorbed without hindering the displacement of the hood or the bumper fascia.

  When the impact force is excessive, the impact absorbing portion 9 is broken and detached from the radiator core support, and as a result, the upper ends of the radiator 2 and the capacitor 3 are further rotated backward.

  Therefore, in the mounting structure of the heat exchanger of the present embodiment, the impact force when the automobile collides can be absorbed by the impact absorbing portion 9 and the rib 30 and can be further relaxed, resulting in high impact absorption. While ensuring the performance, it is possible to avoid the destruction of the peripheral members such as the radiator core support 1.

  Further, compared to the conventional invention, the impact force functioning of the impact absorbing portion 9 can be easily and arbitrarily set, and the impact absorbing portion 9 including the rib 30 is provided when the vehicle is running or the front end module is transported and assembled. There is no fear of coming off.

  Further, by appropriately setting the rigidity of the rib 30, the amount of displacement of the impact absorbing portion 9, the radiator 2, and the capacitor 3 with respect to the impact force can be set.

  Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to the present embodiment, and the present invention can be applied even if there is a design change or the like without departing from the gist of the invention. include.

  For example, the heat exchanger of the present embodiment has been described with respect to the heat exchanger in which the radiator 2 and the condenser 3 are individually configured. However, the heat exchanger may be applied to an integrated heat exchanger in which both are integrally formed. .

  In addition, the number and shape of the brackets 8, the impact absorbing portions 9, and the ribs 21 and 30 can be set as appropriate.

  Further, the shock absorbing portion 9 of the present embodiment has been described as having a U-shaped cross-sectional shape opened upward, but the shock absorbing portion 9 performs heat exchange while absorbing the impact force when the automobile collides. Any shape that allows the upper end of the vessel to rotate rearward may be used, and for example, a U-shaped cross-sectional shape may be used.

It is a whole perspective view which shows the attachment structure of the heat exchanger of Embodiment 1 of this invention. It is a sectional side view which shows the attachment structure of the heat exchanger of this Embodiment. It is a sectional side view which shows the food lock stay vicinity of this Embodiment. It is a figure explaining the effect | action of the attachment structure of the heat exchanger of this Embodiment. It is a sectional side view which shows the attachment structure of the heat exchanger of Embodiment 2 of this invention. It is a figure explaining the effect | action of the attachment structure of the heat exchanger of this Embodiment. It is a sectional side view which shows the attachment structure of the heat exchanger of Embodiment 3 of this invention. It is a figure explaining the effect | action of the attachment structure of the heat exchanger of this Embodiment.

Explanation of symbols

A, B, C Heat exchanger mounting structure B1, B2, B3, B4 Rubber bushing H1, H2 Header K, K1 Core part P1, P2, P3, P4 Pin T1, T2 Tank 1 Radiator core support 2 Radiator 3 Capacitor 4 Radiator core support upper 4a, 5b, 5c Mounting hole 5 Radiator core support lower 5a Support portion 6 Radiator core support side 7 Hood lock stay 8 Bracket 9 Shock absorber 9a, 9b Side wall 10 Bolt 11 Nut 12 Hood lock 13 Secondary catch lever 20 Shock absorber 21, 30 Rib

Claims (3)

In the heat exchanger mounting structure in which the upper end of the heat exchanger is provided so as to be rotatable rearward of the vehicle body around the lower end,
The upper end of the heat exchanger is fixed to the radiator core support upper via a bracket, and the upper end of the heat exchanger is allowed to rotate backward while absorbing the impact force when the automobile collides with the bracket. A heat exchanger mounting structure characterized in that an impact absorbing portion is formed. In the heat exchanger mounting structure according to claim 1,
A heat exchanger mounting structure characterized in that the shock absorbing portion is formed in a U-shaped cross-sectional shape, and a shock absorbing material is interposed in the U-shaped inside. In the heat exchanger mounting structure according to claim 1 or 2,
A mounting structure for a heat exchanger, wherein the bracket is integrally formed of resin, and a rib is formed inside the shock absorbing portion.

Images