JP2006290046A - Radiator core support structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide radiator core support structure capable of improving cooling performance of a heat exchanger by decreasing the ventilation resistance of the air from the heat exchanger toward a fan opening part. <P>SOLUTION: The radiator core support structure is equipped with a radiator core support upper 1a, a radiator core support lower 1b, radiator core support sides 1c, 1c and a hood lock stay 1d on a radiator support core support 1 holding and fixing the heat exchanger 3. The heat exchanger 3 is disposed on the vehicle front side of the hood lock stay 1d, and the fan opening parts 11a, 11d of a shroud part 1e of a fan shroud 2 are disposed at both right and left sides of the hood lock stay 1d. The radiator core support structure is equipped with air guide parts 1i, 1i inclined from the vehicle front side front end part 1h of the hood lock stay 1d toward the fan opening parts 11a, 11b of the shroud part 1e. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a radiator core support structure.

  Conventionally, a radiator core support that fixes and holds a heat exchanger includes a radiator core support upper, a radiator core support lower, a radiator core support side, and a hood lock stay (see Patent Document 1).

In recent years, the radiator core support is integrally formed of resin by injection molding, and accordingly, a radiator core support structure technology in which the hood lock stay and the shroud portion of the fan shroud are integrally formed on the radiator core support. Is known (see Patent Document 2).
JP-A-2005-35435 JP 2005-47370 A

However, in the conventional radiator core support structure, since the heat exchanger is arranged on the front side of the hood lock stay in the vehicle, the wind passing through the heat exchanger collides with the hood lock stay and the ventilation resistance increases. There was a problem of doing.
In addition, when fan openings are arranged on both the left and right sides of the hood lock stay, the airflow from the heat exchanger toward each fan opening collides near the hood lock and becomes turbulent, so the airflow resistance is low. It will increase further.

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to improve the cooling performance of the heat exchanger by efficiently guiding the wind from the heat exchanger toward the fan opening. It is to provide a radiator core support structure.

  In the invention of claim 1 of the present invention, a radiator core support upper extending in the vehicle width direction on a radiator core support for holding and fixing the heat exchanger, a radiator core support lower parallel to the radiator core support upper, A radiator core support side that connects both ends of the radiator core support upper and the radiator core support lower, and a hood lock stay that connects the radiator core support upper and the center portion of the radiator core support lower are provided. In a radiator core support structure in which a heat exchanger is disposed on the front side of the vehicle and a fan opening of a shroud portion of the fan shroud is disposed on either one or both sides of the hood lock stay, the vehicle of the hood lock stay From the front front end Characterized in that it comprises an air guide portion inclined toward the fan opening in the shroud portion.

  In the first aspect of the present invention, the radiator core support that holds and fixes the heat exchanger has a radiator core support upper that extends in the vehicle width direction, and the radiator core support that is parallel to the radiator core support upper. The hood is provided with a lower, a radiator core support upper and a radiator core support side that couples both ends of the radiator core support lower, and a hood lock stay that couples the radiator core support upper and the center of the radiator core support lower. In the radiator core support structure in which a heat exchanger is disposed on the vehicle front side of the lock stay, and a fan opening of the shroud portion of the fan shroud is disposed on either one or both sides of the hood lock stay, the hood lock Front end of vehicle on stay From To provide an air guide portion inclined toward the fan opening in the shroud portion, from the heat exchanger to lower the flow resistance of the air toward the fan opening can improve the cooling performance of the heat exchanger.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
1 is an exploded perspective view of a radiator core support structure according to a first embodiment of the present invention, FIG. 2 is a perspective view of a radiator core support according to the first embodiment, FIG. 3 is an enlarged view of a portion A in FIG. Is a perspective view of the fan shroud, FIG. 5 is an enlarged view of a portion B shown in FIG. 4, FIG. 6 is a front view of the fan, FIG. 7 is a plan view of the heat exchanger according to the first embodiment, and FIG. FIG. 9 is a rear perspective view (only a part) of the heat exchanger according to the first embodiment.

  10 and 11 are diagrams for explaining the assembled state of the radiator core support and the fan shroud according to the first embodiment (fans and motors are omitted), and FIGS. 12 and 13 are the assembly of the radiator core support, the fan shroud, and the heat exchanger. FIG. 14 is a diagram for explaining the operation of the radiator core support structure according to the first embodiment.

First, the overall configuration will be described.
As shown in FIG. 1, the radiator core support structure according to the first embodiment includes a radiator core support 1, a fan shroud 2, and a heat exchanger 3.

As shown in FIG. 2, the radiator core support 1 includes a radiator core support upper 1a extending in the vehicle width direction, a radiator core support lower 1b parallel to the radiator core support upper 1a, a radiator core support upper 1a, and a radiator. Radiator core support sides 1c and 1c for connecting both ends of the core support lower 1b, a hood lock stay 1d for connecting the center portions of the radiator core support upper 1a and the radiator core support lower 1b, and the radiator core support upper 1a. The radiator core support lower 1b, the radiator core support sides 1c and 1c, and the shroud portion 1e provided inside the hood lock stay 1d are formed integrally with resin.
A part of the entire radiator core support 1 may be made of metal and resin-molded.

  Fan openings 11a and 11b are formed on the left and right sides of the hood lock stay 1d in the shroud portion 1e, and as shown in FIG. 3, the fan openings 11a and 11b are located at positions close to the hood lock stay 1d. Are formed with plate-like fixing portions 1g and 1g (corresponding to first locking portions) that protrude to the vehicle front side.

  Further, the hood lock stay 1d is formed in a substantially V-shaped cross section with the front side of the vehicle as a top, and thereby tilts from the front end 1h of the hood lock stay 1d toward the fan openings 11a and 11b. Air guide portions 1i and 1i are formed.

  In addition, the left and right sides of the radiator core support upper 1a are provided with fixing portions 1j and 1j for fixing the left and right upper portions of the heat exchanger, and the left and right lower portions of the heat exchanger are provided on the left and right sides of the radiator core support lower 1b. Fixing holes 1k and 1k for fixing are formed.

  As shown in FIG. 4, the fan shroud 2 is a fan shroud for a so-called double fan in which fans 4 to be described later can be respectively mounted on the left and right sides. And a pair of substantially cylindrical fan ring portions 2c connected from the main body portion 2a via a plurality of fan stay portions 2b.

  Also, a skirt-like rib 2d protruding outward in the radial direction is formed on the outer peripheral portion of each fan ring portion 2c.

  Further, the pair of fan ring portions 2c are connected by a connecting portion 2e, and as shown in FIG. 5, at positions corresponding to the fixing portions 1g and 1g of the radiator core support 1 in the connecting portion 2e, Locking claws 2f and 2f (corresponding to a second locking portion) projecting forward are formed.

  Further, fixing portions 2h having fixing holes 2g are provided on the left and right of the upper portion of the fan shroud 2, and a total of four insertion pins 2i projecting downward are formed on the left, right, and center of the lower portion of the fan shroud 2. Yes.

  As shown in FIG. 6, the fan 4 is a so-called ring fan in which a substantially cylindrical outer peripheral portion 4a and a substantially cylindrical rotation base 4b to which a motor (not shown) is connected are connected by a plurality of blades 4c. The whole is integrally formed of resin. The fan 4 may be a type other than the ring fan, and is not limited to this.

  As shown in FIGS. 7 to 9, the heat exchanger 3 is an integrated heat exchanger in which a condenser 5 on the vehicle front side and a radiator 6 arranged on the vehicle rear side of the condenser 5 are connected. Capacitor tanks 5b and 5c, in which end portions of capacitor tubes 5a described later are fitted and fixed, are arranged on both the left and right sides of 5, respectively.

The capacitor tank 5b is partitioned into two chambers R1 and R4 by a partition portion 5d, and the capacitor tank 5c is partitioned into two chambers R2 and R3 by a partition portion 5e.
The capacitor tank 5b is provided with an input / output connector 5i having an input port 5f communicating with the chamber R1 and an output port 5h communicating with the chamber R4 via the connecting pipe 5g.
On the other hand, the capacitor tank 5c is provided with a receiver 5m communicating with the chambers R2 and R3 via the connecting pipes 5j and 5k.

On both the left and right sides of the radiator 6, radiator tanks 6b and 6c in which both ends of a later-described radiator tube 6a are fitted and fixed via corresponding tube plates (not shown) are arranged.
An input port 6d that protrudes toward the rear of the vehicle is provided at the upper part of the radiator tank 6b, while an output port 6e that protrudes toward the rear of the vehicle is provided at the lower part of the radiator tank 6c.
Furthermore, mounting pins P1 to P4 projecting in the vertical direction are provided at the upper and lower ends of the radiator tanks 6b and 6c.

Further, as shown in FIG. 9, the capacitor tube 5a and the radiator tube 6c of the first embodiment are alternately stacked in the vertical direction using the fins 7 as a common part with a predetermined interval in the front-rear direction. A core 8 for radiator and a core 9 for radiator (corresponding to the core of the heat exchanger) are formed.
The fins 7 are not necessarily shared components, and may be provided separately for the capacitor core 8 and the radiator core 9.

In addition, the capacitor tanks 5b and 5c and the radiator tanks 6b and 6c described above are connected and fixed by a pair of reinforcements 10a and 10b.
Further, in the heat exchanger 3 of the first embodiment, all the constituent members are made of aluminum, and a clad layer made of a brazing material is formed on at least one side of the joint portions of the respective constituent members. After being assembled, they are integrally formed by brazing in a heating furnace (not shown). In addition, you may fix the receiver 5m in the process after the said brazing using a bracket etc.
In the first embodiment, the heat exchanger 3 is an integrated heat exchanger, but a general heat exchanger such as a single condenser 5 or a radiator 6 may be used.

Next, the assembly of the radiator core support 1, the fan shroud 2, and the heat exchanger 3 will be described.
When the fan shroud 2 is fixed to the radiator core support 1, after the fan 4 including the motor is mounted on the fan shroud 2 in advance, the insertion pin 2i of the fan shroud 2 is used as an insertion receiving portion (not shown) of the shroud portion 1e. Insert from diagonally above.

  Next, with the fan openings 11a and 11b and the ribs 2d of the fan ring portions 2c and 2c overlapped, bolts and nuts are fastened to the fixing holes 1g of the fan shroud 2 and the fixing holes of the shroud portion 1e (not shown). As a result, the fan shroud 2 is fixed to the radiator core support 1 (see FIG. 10).

At this time, as shown in FIG. 11, the locking claws 2f and 2f of the fan shroud 2 engage with the corresponding fixing portions 1g and 1g of the shroud portion 1e, respectively, so that both are firmly fixed.
Thereby, when the fan shroud 2 is fastened to the radiator core support 1 with bolts and nuts, it is not necessary to hold the fan shroud 2 by hand.
Further, since the vicinity of the center of the fan shroud 2 is engaged and fixed with the radiator core support 1, the central portion of the fan shroud 2 does not hit the radiator core support 1 during running and no noise is generated.

  Next, after mounting the mounting pins P3 and P4 of the heat exchanger 3 into the fixing holes 1k and 1k of the radiator core support lower 1b through a lower mount made of an elastic material not shown, the mounting pins P1 and P2 are illustrated. The heat exchanger 3 is fixed to the radiator core support 1 by fixing it to the fixing portions 1j and 1j of the radiator core support upper 1a via a bracket that omits.

At this time, as shown in FIGS. 12 and 13, the vehicle front side front end 1h of the hood lock stay 1d, which is also the vehicle front side front end of the air guide portions 1i, 1i, is located behind the rear side of the radiator tank 6c (6b). It arrange | positions so that it may become the position which protruded only the distance W1 from the edge part 6f to the radiator core 9 side.
In addition, the distance between the vehicle front side front end 1h of the hood lock stay 1d and the radiator core 9 is determined in consideration of errors in the component product accuracy and assembly accuracy of both.

  Further, the front end 1h of the vehicle front side of the hood lock stay 1d may be arranged at the same position as the rear end 6f of the vehicle rear side of the radiator tank 6c (6b), that is, the distance W1 = 0.

Next, the operation will be described.
In the thus configured radiator core support structure, the circulation medium of about 110 ° C. flowing into the radiator tank 6b from the input port 6d of the radiator 6 travels through the fins 7 while flowing through each radiator tube 6a. After being heat-exchanged with wind or forced air by the fan 4 and cooled to about 60 ° C., it flows into the radiator tank 6c and is discharged from the output port 6e.

  On the other hand, the circulation medium at about 80 ° C. flowing into the chamber R1 of the capacitor tank 5b from the input port 5f of the capacitor 5 passes through the fins 7 while flowing through the condenser tube 5a corresponding to the chambers R1 and R2. Or after heat exchange with the forced air by the fan 4, it flows into chamber R2 of the capacitor | condenser tank 5c.

  Next, after the flow medium in the chamber R2 is gas-liquid separated in the receiver 5m through the connection pipe 5j, only the liquid flow medium flows into the chamber R3 of the capacitor tank 5c through the connection pipe 5k. While circulating through the radiator tubes 6a corresponding to the chambers R3 and R4, the heat is exchanged with the vehicle running wind or the forced wind by the fan 4 through the fins 7 and is supercooled to about 45 ° C., then the condenser tank 5b It flows into chamber R4.

  Finally, the distribution medium in the chamber R4 is discharged from the output port 5h through the connection pipe 5g.

At this time, as shown in FIG. 12, the wind passing through the condenser core 8 and the radiator core 9 is directed to the corresponding fans 4 through the fan openings 11a and 11b of the shroud portion 1e of the radiator core support 1. Here, in the conventional invention, the wind toward the fan opening collides with the hood lock stay and the ventilation resistance increases, the fan performance is lowered and the heat exchanger cooling performance is lowered. There was a problem of doing.
Further, since the vicinity of the hood lock stay is located at the boundary of the wind toward the left and right fans, it tends to be turbulent and tends to increase ventilation resistance.

  However, in the radiator core support structure of the first embodiment, the air guide portions 1i and 1i inclined toward the fan opening portions 11a and 11b of the shroud portion 1e from the vehicle front side front end portion 1h of the hood lock stay 1d are provided. Therefore, as shown in FIG. 14, it is possible to smoothly guide the winds X1 and X2 from the heat exchanger 3 toward the corresponding fan openings 11a and 11b, respectively, thereby reducing the ventilation resistance of the winds X1 and X2. Thus, the cooling performance of the heat exchanger 3 can be improved.

Next, the effect will be described.
As described above, in the radiator core support structure of the first embodiment, the radiator core support 1 that holds and fixes the heat exchanger 3 is disposed on the radiator core support upper 1a that extends in the vehicle width direction. A radiator core support lower 1b in parallel with the radiator core support upper 1a, a radiator core support upper 1a and a radiator core support lower 1b that connect both ends of the radiator core support lower 1b, a radiator core support upper 1a and a radiator core A hood lock stay 1d that connects the central portions of the support lowers 1b is provided, a heat exchanger 3 is disposed on the vehicle front side of the hood lock stay 1d, and a shroud portion of the fan shroud 2 is provided on both the left and right sides of the hood lock stay 1d. Radiator in which 1e fan openings 11a and 11b are arranged In the core support structure, since the air guide portions 1i and 1i are inclined from the vehicle front side front end portion 1h of the hood lock stay 1d toward the fan opening portions 11a and 11b of the shroud portion 1e, the heat exchanger 3 to the fan 4 are provided. It is possible to improve the performance of the fan 4 by lowering the ventilation resistance of the wind to be directed, and consequently improve the cooling performance of the heat exchanger 3.

  In addition, since at least the hood lock stay 1d, the shroud portion 1e, and the air guide portions 1i and 1i are integrally formed of resin, it is possible to prevent wind leakage as compared with the case where they are configured separately, as well as the number of parts and the number of assembly steps. To reduce costs.

  Further, the fan openings 11a and 11b of the shroud portion 1e are respectively arranged on the left and right sides of the hood lock stay 1d, and the hood lock stay 1d is formed in a substantially V-shaped cross section with the front side of the vehicle as the top. The air guide portions 1i and 1i that are inclined from the front end 1h of the vehicle front side of the lock stay 1d toward the fan openings 11a and 11b of the shroud portion 1d are formed, thereby turbulent air flow toward the fan openings 11a and 11b. It can guide smoothly without letting.

  Further, the vehicle front side front end portion 1h of the air guide portions 1i, 1i is located at the same position as the vehicle rear side rear end portion 6f of the radiator tank 6b, 6c of the heat exchanger 3, or the radiator tank 6b, 6c of the heat exchanger 3. Since the rear end 6f of the vehicle is positioned so as to protrude toward the radiator core 9 of the heat exchanger 3, the front front 1h of the air guides 1i and 1i is connected to the radiator of the heat exchanger 3. Therefore, it is possible to reliably prevent the winds X1 and X2 heading toward the fan openings 11a and 11b from colliding with each other and becoming turbulent.

Further, a radiator core support 1 for holding and fixing the heat exchanger 3, a radiator core support upper 1a extending in the vehicle width direction, a radiator core support lower 1b parallel to the radiator core support upper 1a, and a radiator core support upper A radiator core support side 1c, 1c for connecting both ends of 1a and the radiator core support lower 1b, and a hood lock stay 1d for connecting the center of the radiator core support upper 1a and the radiator core support lower 1b to each other are provided. A shroud portion 1e of the fan shroud 2 is formed integrally with the core support 1, and a fan ring portion 2c of the fan shroud 2 is fixed together with the main body portion 2a to the fan openings 11a and 11b provided in the shroud portion 1e. Radiator core support structure The first locking part (fixing part 1g, 1g) is formed at the center of the hood lock stay 1d of the radiator core support 1 and corresponds to the first locking part (fixing part 1g, 1g) of the fan shroud 2. A second locking portion (locking claws 2f, 2f) is formed at a position where the fan shroud 2 is fixed to the fan opening portion 11a, 11b provided in the shroud portion 2 together with the main body portion 2a. At this time, since the first locking portion (fixing portions 1g, 1g) and the second locking portion (locking claws 2f, 2f) are engaged and fixed to each other, the fan shroud 2 is bolted to the radiator core support 1. When fastening with a nut, it is not necessary to hold the fan shroud 2 by hand.
In addition, since the vicinity of the center of the fan shroud 2 is engaged and fixed with the radiator core support 1, the central portion of the fan shroud 2 does not hit the radiator core support 1 during running and no noise is generated.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, in the first embodiment, the hood lock stay 1d, the shroud portion 1e, and the air guide portions 1i and 1i are integrally formed of resin, but these may be configured separately.
Moreover, although the case where the fan openings 11a and 11b are disposed on the left and right sides of the radiator core support 1 has been described, when the fan opening is disposed on either the left or right side, the fan opening is disposed. What is necessary is just to provide the air guide part 1i in the side.

It is a disassembled perspective view of the radiator core support structure of Example 1 of this invention. It is a perspective view of the radiator core support of the first embodiment. It is an enlarged view of the arrow A part of FIG. It is a perspective view of the fan shroud of the first embodiment. It is an enlarged view of the arrow B part of FIG. It is a front view of the fan of the first embodiment. It is a top view of the heat exchanger of the present Example 1. It is a front view of the heat exchanger of the present Example 1. FIG. 3 is a rear perspective view (only a part) of the heat exchanger according to the first embodiment. It is a figure explaining the assembly state of a radiator core support and a fan shroud (a fan and a motor are omitted). It is a figure explaining the assembly state of a radiator core support and a fan shroud (a fan and a motor are omitted). It is a plane sectional view explaining the assembly state of a radiator core support, a fan shroud, and a heat exchanger. It is a plane sectional view explaining the assembly state of a radiator core support, a fan shroud, and a heat exchanger. It is a figure explaining the effect | action of the radiator core support structure of the present Example 1. FIG.

Explanation of symbols

P1, P2, P3, P4 Mounted pins R1, R2, R3, R4 Chamber 1 Radiator core support 1a Radiator core support upper 1b Radiator core support lower 1c Radiator core support side 1d Hood lock stay 1e Shroud portion 1g Fixed portion (first engagement) Equivalent to stop)
1h Vehicle front side front end portion 1i Air guide portion 1j Fixing portion 1k Fixing hole 2 Fan shroud 2a Main body portion 2b Fan stay portion 2c Fan ring portion 2d Rib 2e Connecting portion 2f Locking claw (corresponding to the second locking portion)
2g Fixing hole 2h Fixing part 2i Insertion pin 3 Heat exchanger 4 Fan 4a Outer peripheral part 4b Rotating base part 4c Blade 5 Capacitor 5a Capacitor tube 5b, 5c Capacitor tank 5d, 5e Partition part 5f Input port 5g, 5j, 5k Connecting pipe 5h Output Port 5i Input / output connector 5m Receiver 6 Radiator 6a Radiator tube 6b, 6c Radiator tank 6d Input port 6e Output port 6f Rear end of vehicle 7 Fin 8 Capacitor core 9 Radiator core 10a, 10b Reinforce 11a, 11b Fan opening Part

Claims (5)

The radiator core support that holds and fixes the heat exchanger has a radiator core support upper that extends in the vehicle width direction, a radiator core support lower that is parallel to the radiator core support upper, and both ends of the radiator core support upper and the radiator core support lower. A radiator core support side that connects the parts, and a hood lock stay that connects the center parts of the radiator core support upper and the radiator core support lower are provided.
A heat exchanger is disposed on the vehicle front side of the hood lock stay;
In the radiator core support structure in which the fan opening of the shroud portion of the fan shroud is arranged on either one or both sides of the food lock stay,
A radiator core support structure comprising an air guide portion inclined from a front end portion of the hood lock stay toward the fan opening of the shroud portion. The radiator core support structure according to claim 1,
A radiator core support structure in which at least the hood lock stay, the shroud portion, and the air guide portion are integrally formed of resin. In the radiator core support structure according to claim 1 or 2,
Place the fan opening of the shroud part on each of the left and right sides of the hood lock stay,
By forming the hood lock stay in a substantially V-shaped cross section with the vehicle front side at the top, an air guide portion inclined from the vehicle front side front end portion of the hood lock stay toward the fan opening of the shroud portion is formed. Radiator core support structure characterized by In the radiator core support structure in any one of Claims 1-3,
The front end portion of the air guide portion on the front side of the vehicle protrudes from the rear end portion on the rear side of the tank of the heat exchanger or from the rear end portion on the rear side of the tank of the heat exchanger toward the core side of the heat exchanger. Radiator core support structure, characterized in that it is positioned so as to be positioned. The radiator core support that holds and fixes the heat exchanger has a radiator core support upper that extends in the vehicle width direction, a radiator core support lower that is parallel to the radiator core support upper, and both ends of the radiator core support upper and the radiator core support lower. A radiator core support side that connects the parts, and a hood lock stay that connects the center parts of the radiator core support upper and the radiator core support lower are provided.
In the radiator core support structure in which the shroud portion of the fan shroud is formed integrally with the radiator core support, and the fan ring portion of the fan shroud is fixed together with the main body portion in the fan opening provided in the shroud portion.
Forming a first locking portion at the center of the hood lock stay of the radiator core support;
Forming a second locking portion at a position corresponding to the first locking portion of the fan shroud;
When fixing the fan ring part of the fan shroud together with the main body part to the fan opening provided in the shroud part, the first locking part and the second locking part are engaged to fix both of them. Features a radiator core support structure.

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