JP3120281B2 - Shroud mounting structure for automotive heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a heat exchanger for a vehicle, which is mounted on a vehicle body together with a resin fan shroud.

[0002]

2. Description of the Related Art A heat exchanger for a vehicle has a fan shroud mounted thereon, and then they are mounted on a frame or a body of the vehicle. A mounting structure of such a heat exchanger and a shroud for an automobile is disclosed in Japanese Patent No. 261430. As shown in FIG. 5, a lower tank 15 of the heat exchanger 10 is made of a resin material, and a pair of mounting brackets 20 is protruded on one side thereof, and mounting holes 21 are formed in them. Also, a pair of mounting brackets 23 are provided on one side of the upper tank 4 so as to protrude, and each has a bolt hole 22.
The shroud 2 is made of a resin material, and mounting brackets 24 and 26 are integrally formed at four corners thereof, and a mounting pin 25 is integrally formed on the lower mounting bracket 24. Then, the mounting pins 25 are inserted into the mounting holes 21 of the mounting bracket 20 of the lower tank 15, and the respective bolt holes are aligned in a state where the mounting bracket 26 on the upper side of the shroud 2 is in contact with the mounting bracket 23 of the upper tank 4. Then, the shroud 2 is fixed to the heat exchanger 10 via bolts and nuts (not shown). Then, the lower portion of the heat exchanger 10 is fixed to the vehicle body via the mounting pins 25 and mounting components (not shown). The upper portion of the heat exchanger 10 is fixed to the vehicle body via a mounting bracket or a pin (not shown).

[0003]

In the conventional shroud mounting structure, the lower portion can be mounted to the heat exchanger 10 with one touch, but the upper portion of the shroud 2 must be mounted via bolts and nuts. Was. Further, a heat exchanger is provided via a mounting pin 25 protruding from a lower portion of the shroud 2.
Although 10 can be fixed to the vehicle body, a pin that can also be used for fixing the shroud 2 cannot be projected from the upper portion of the shroud 2 due to its structure. Therefore, the upper part of the heat exchanger 10 or the shroud 2 must be attached to the support bracket of the vehicle body by a separate component. Therefore, the present invention has a small number of parts and can easily fix the upper part of the shroud 2 and the upper tank 4 of the heat exchanger 10, and the fixing member can easily fix the upper part of the heat exchanger 10 to the vehicle body or the frame. It is an object to provide a shroud mounting structure for a heat exchanger for an automobile.

[0004]

According to the first aspect of the present invention, a shroud (2) is arranged opposite to a plane of a heat exchanger core (1) comprising an assembly of fins (16) and a tube (17). In a shroud mounting structure for a heat exchanger for an automobile in which an upper arm 3 protruding from an outer periphery of an upper end of the heat exchanger 2 is fixed to an upper tank 4 of the heat exchanger, a projecting piece 5 protruding from an upper surface of the upper tank 4 The upper arm 3 of the shroud 2
Are the upper end surface 4a and the side surface 4b of the upper tank 4.
The upper arm 3 has a cross section inverted L
A reverse L-shaped contact portion 6 provided in a letter shape and a heat projecting integrally from the upper surface of the inverted L-shaped contact portion 6 and having a diameter substantially equal to or greater than the width of the protruding piece 5. An upper pin 7 for mounting the exchanger, a slit 8 cut off from the upper pin 7 and the tip of the inverted L-shaped contact portion 6 to the upper pin 7 and having a width matching the width of the protruding piece 5; An annular rubber mount 9 fitted to the upper pin 7, wherein the inner surface of the inverted L-shaped contact portion 6 is a side surface 4 b and an upper end surface 4 of the upper tank 4.
a, the protrusion 5 is fitted into the slit 8, and the rubber mount 9 is connected to the upper pin 7 and the protrusion 5 while the protrusion 5 is positioned in the upper pin 7.
Characterized in that the heat exchanger 10 is mounted on the frame 11 or the vehicle body of the vehicle via the upper pin 7 of the shroud. .

According to the present invention, the inner surface of the inverted L-shaped contact portion 6 comes into contact with the upper end surface 4a and the side surface 4b of the upper tank 4, and the projecting piece 5 is fitted into the slit 8 thereof. The rubber mount 9 is fitted and held on the outer periphery of the upper pin 7 and the projecting piece 5 with the 5 positioned inside the upper pin 7. Since the heat exchanger 10 is mounted on the frame 11 or the vehicle body of the automobile via the upper pin 7, the slit 8 and the upper pin 7 provided in the reverse L-shaped contact portion 6 and the upper tank 4 The protrusion 5 allows the upper portion of the shroud 2 to be fitted to the upper tank 4 from the side. By attaching the rubber mount 9 to the upper pin 7, the upper part of the shroud 2 can be fixed to the upper tank 4 with one touch. Moreover, the rubber mount 9 also serves as a cushioning material when the heat exchanger 10 is mounted on the frame 11 or the vehicle body of the automobile via the upper pin 7. That is, the rubber mount 9 serves as a fixing member for the shroud 2 and also serves as a cushioning material for mounting the heat exchanger 10 on a vehicle. Therefore, it is possible to provide a heat exchanger mounting structure which has a small number of parts and also serves as a simple shroud mounting structure.

The second aspect of the present invention is an embodiment of the first aspect, wherein the upper tank 4 is fitted in a liquid-tight manner on a cylindrical portion 12 having a rectangular cross section and both ends thereof. A shroud mounting structure for a heat exchanger for an automobile, comprising a pair of side lids 13 provided with the protruding pieces 5 integrally formed on the upper edge of the side lids 13. According to the present invention, since the protruding pieces 5 are integrally protruded from the pair of side lids 13 fitted to the ends of the cylindrical portion 12 of the upper tank 4, a shroud mounting structure with a small number of parts can be obtained.

The present invention according to claim 3 is an embodiment of the invention according to claim 1 or the embodiment according to claim 2,
This is a shroud mounting structure for a heat exchanger for an automobile, which is formed in a hollow shape so that the tip of a lower arm 14 protruding from the outer periphery of the lower end of the shroud 2 is aligned with both sides and the outer periphery of the lower surface of the lower tank 15. The present invention relates to a lower arm of the shroud 2.
Since the front end of the shroud 14 is formed in a shape of a sagger that matches the outer periphery of the lower tank 15, the lower and upper portions of the shroud 2 can be attached simultaneously with one touch.
Next, the present invention according to claim 4 is an embodiment of the invention according to claim 3, wherein a lower pin 18 for mounting a heat exchanger is integrally provided on a lower surface of the lower arm 14. 3 is a shroud mounting structure for a heat exchanger for an automobile. According to the present invention, the lower pin 18 for mounting the heat exchanger is integrally provided on the lower surface of the lower arm 14 so that the lower pin 18 and the upper pin 7 together with the shroud 2 allow the heat exchanger 10 to be mounted. Can be easily attached to the frame 11 or the vehicle body of the automobile, and a heat exchanger mounting structure with a small number of parts can be provided.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a main part of a shroud mounting structure of a heat exchanger for an automobile of the present invention, and FIG. 2 is an explanatory view showing a mounting order thereof. FIG. 3 is a front view showing the mounting state, and FIG. 4 is an explanatory view for fixing the mounting structure to a vehicle body. The object to which the shroud is attached is one in which the upper tank 4 and the lower tank 15 are vertically separated from each other, and the heat exchanger core 1 is disposed therebetween. In this example, at least the upper tank 4 has a cylindrical section 12 having a rectangular cross section.
And a pair of side covers 13 for closing both ends in the longitudinal direction. At the upper end of each side cover 13, an L-shaped protruding piece 5 is provided. The inner peripheral surface of the side cover 13 and the outer periphery of the cylindrical portion 12 are aligned, the two are fitted, and the space therebetween is liquid-tightly joined by brazing or the like. A large number of tube insertion holes (not shown) are formed in the tubular portion 12 at regular intervals. Similar tube insertion holes are formed in the lower tank 15, and both ends of a large number of tubes 17 are inserted into these holes, respectively, and brazed in a liquid-tight manner. Fins 16 are joined between the tubes 17, and the heat exchanger core 1 is constituted by an aggregate of the fins 16 and the tubes 17.

Next, the shroud 2 is formed in a rectangular shape substantially matching the outer periphery of the heat exchanger core 1, and a short cylindrical fan insertion portion is provided at the center. In this example, as shown in FIG. 3, a pair of upper arms 3 project from the upper corners of the shroud 2, and one lower arm 14 is provided at the lower center.
Are protruding. These are integrally formed by a molded body of a synthetic resin, and an inverted L-shaped contact portion 6 is formed at an end of each upper arm 3, and the inner surface thereof is aligned with the outer periphery of the upper tank 4. On the upper surface of each of the inverted L-shaped abutting portions 6, an upper pin 7 is integrally protruded.
A slit 8 is formed from the tip of the mold contact portion 6 to the upper pin 7. The width of the slit 8 matches the thickness of the projection 5. In addition, the width of the protruding piece 5 matches the diameter of the upper pin 7. Next, the lower part of the shroud 2 is formed in a hollow shape, and its inner peripheral surface is aligned with the outer peripheral surface of the lower tank 15. Further, a lower pin 18 is integrally formed at the lower end of the lower arm 14.
Are protruding.

[0010] The shroud 2 thus constructed is attached to the heat exchanger 10 as follows. First,
The lower arm 14 of the shroud 2 is fitted on the lower surface and one side surface of the lower tank 15, and the shroud 2 is turned clockwise as shown in FIG. Then, the slit 8 formed in the distal end portion of the inverted L-shaped contact portion 6 and the upper pin 7 is inserted into the protruding piece 5. Next, a rubber mount 9 is press-fitted between the two. As a result, the rubber mounts 9 are located on both sides of the protruding piece 5, and the inverted L-shaped contact portion 6 is held by the tubular portion 12. Then, the lower pin 18 protruding from the lower surface of the shroud 2 is inserted through a rubber mount 9 into a mounting hole of a vehicle frame or a vehicle body. Next, as shown in FIG. 4, a bracket is attached to the upper pin 7 on the upper side of the heat exchanger 10.
By fitting the 19 mounting holes and fixing the bracket 19 to the frame 11, the automotive heat exchanger and its shroud can be mounted on the vehicle body.

[0011]

According to the first aspect of the present invention, the inner surface of the inverted L-shaped contact portion 6 comes into contact with the upper end surface 4a and the side surface 4b of the upper tank 4, and the protruding piece 5 fits into the slit 8. Wear it,
With the protruding piece 5 positioned inside the upper pin 7, the rubber mount 9 is fitted and held on the outer periphery of the upper pin 7 and the protruding piece 5. Since the heat exchanger 10 is mounted on the frame 11 or the vehicle body of the automobile via the upper pin 7, the slit 8 and the upper pin 7 provided in the reverse L-shaped contact portion 6 and the upper tank 4 The shroud 2
Can be fitted to the upper tank 4 from the side.
By attaching the rubber mount 9 to the upper pin 7, the upper part of the shroud 2 can be fixed to the upper tank 4 with one touch. Moreover, the rubber mount 9 also serves as a cushioning material when the heat exchanger 10 is mounted on the frame 11 or the vehicle body of the automobile via the upper pin 7. That is, the rubber mount 9 serves as a fixing member for the shroud 2 and also serves as a cushioning material for mounting the heat exchanger 10 on a vehicle. Therefore, it is possible to provide a heat exchanger mounting structure which has a small number of parts and also serves as a simple shroud mounting structure.

According to the second aspect of the present invention, since the projecting pieces 5 are integrally provided on the side lids 13 fitted to both ends of the cylindrical portion 12 of the upper tank 4, the number of parts is small. It can be a shroud mounting structure. Next, according to the third aspect of the present invention, since the distal end of the lower arm 14 of the shroud 2 is formed in a luggage shape matching the outer periphery of the lower tank 15, the lower and upper portions of the shroud 2 are attached. Can be performed simultaneously with one touch. Further, according to the present invention, since the lower pin 18 for mounting the heat exchanger is integrally formed on the lower surface of the lower arm 14, the lower pin 18 and the upper pin 7 are provided.
Thus, the heat exchanger 10 together with the shroud 2 can be easily attached to the frame 11 or the vehicle body of the automobile, and a heat exchanger mounting structure with a small number of parts can be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of a main part of a shroud mounting structure of a heat exchanger for a vehicle according to the present invention.

FIG. 2 is an explanatory view showing the mounting order.

FIG. 3 is a front view of the automotive heat exchanger having the mounting structure.

FIG. 4 is an explanatory view of mounting a heat exchanger on a vehicle body using the mounting structure.

FIG. 5 is an explanatory view of a shroud mounting structure of a conventional automobile heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger core 2 Shroud 3 Upper arm 4 Upper tank 4a Upper end surface 4b Side surface 5 Protrusion piece 6 Reverse L-shaped contact part 7 Upper pin 8 Slit 9 Rubber mount 10 Heat exchanger 11 Frame 12 Cylindrical part 13 Side cover 14 Lower arm 15 Lower tank 16 Fin 17 Tube 18 Lower pin 19 Bracket 20,23,24,26 Mounting bracket 21 Mounting hole 22 Bolt hole 25 Mounting pin

Claims (4)

(57) [Claims] A shroud (2) is disposed opposite a plane of a heat exchanger core (1) composed of an assembly of fins (16) and tubes (17), and an upper arm (3) protruding from an outer periphery of an upper end of the shroud (2) is heated. In the shroud mounting structure of the heat exchanger for an automobile fixed to the upper tank 4 of the exchanger 10, the protruding piece 5 protruding from the upper surface of the upper tank 4 and the tip of the upper arm 3 of the shroud 2 are provided. So as to contact the upper end surface 4a and the side surface 4b of the upper tank 4;
An inverted L-shaped abutting portion 6 provided at the distal end of the upper arm 3 in an inverted L-shaped cross-section; The upper pin 7 for mounting the heat exchanger, which is substantially the same as or larger than the width of the protruding piece 5, is cut off from the upper pin 7 and the tip of the inverted L-shaped contact portion 6 to the upper pin 7. A slit 8 having a width matching the width; and an annular rubber mount 9 fitted to the upper pin 7, wherein the inner surface of the inverted L-shaped contact portion 6 is a side surface 4 b of the upper tank 4.
The rubber mount 9 contacts the upper pin 7 and the upper pin 7 with the protruding piece 5 fitted in the slit 8 and the protruding piece 5 positioned in the upper pin 7. The heat exchanger 10 is fitted and held on the outer periphery of the piece 5 and the heat exchanger 10 is
11. A shroud mounting structure for an automotive heat exchanger, wherein the shroud mounting structure is configured to be mounted on a vehicle body. 2. The upper tank according to claim 1, wherein the upper tank has a tubular portion having a rectangular cross section and a pair of side covers fitted to both ends thereof in a liquid-tight manner. A shroud mounting structure for a heat exchanger for an automobile, wherein the protruding pieces 5 are integrally provided. 3. The shroud 2 according to claim 1, wherein the distal end of the lower arm 14 protruding from the outer periphery of the lower end of the shroud 2 is formed in a tongue-shaped cross-section so as to match both sides of the lower tank 15 and the outer periphery of the lower surface. Shroud mounting structure for automotive heat exchangers. 4. A shroud mounting structure for a heat exchanger for an automobile according to claim 3, wherein a lower pin for mounting the heat exchanger is integrally provided on a lower surface of the lower arm.