JPH0116952Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a fixing device for a bracket in a heat exchanger such as a radiator.

In this specification, aluminum is meant to include pure aluminum and aluminum alloys.

BACKGROUND TECHNOLOGY Generally, a bracket is fixed to an aluminum radiator to attach it to the body of an automobile, etc., but conventionally, as shown in FIG.
The bracket 8 was first temporarily welded to the upper wall 14a of the header tank 14 of the radiator 11 at two locations to prevent the bracket 8 from shifting, and then the bracket 8 was held down with a jig and brazed. However, this makes welding work extremely troublesome and time-consuming.
There was a problem that the productivity of the radiator 11 was poor and the cost was high.

In addition, since the temporary fixing of the bracket 18 as described above is done manually, on a production line where many radiators are assembled in a short assembly line, workers may forget to attach the bracket 18. The assembled radiator 11 is often passed on to the next brazing process, and in such cases, a radiator product is produced without the bracket 18 attached, but the bracket 18 is a relatively small component. Since it is not related to the performance of the radiator itself, it is overlooked in the performance inspection of the radiator, and if it is sold to a user by mistake, the installation of the radiator on the car body may be difficult. The problem was that this kind of situation often occurred.

Purpose of the invention The purpose of this invention is to solve the above-mentioned problems, to be able to reliably detect forgetting to install a bracket at the stage of heat exchanger performance inspection, and to make it easy to fix the bracket. It is an object of the present invention to provide a bracket fixing device for a heat exchanger, which can increase productivity, has a simple bracket shape, is easy to manufacture, and can reduce the manufacturing cost of the heat exchanger.

Structure of the invention In order to achieve the above-mentioned purpose, in this invention, a through hole is drilled at the location where the bracket is to be attached on the side wall of the header tank provided in the aluminum heat exchanger, and a through hole is made in the wall to which the bracket is attached. A bulge that protrudes from the side wall of the header/tank and is large enough to fit into the through hole is provided, and when the bulge is fitted into the through hole, the wall to which the bracket is attached is attached to the side wall of the header/tank. The gist is a fixing device for a bracket in a heat exchanger whose peripheral portion is tightly brazed.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In FIGS. 1 and 2, 1 is an aluminum radiator, and 2 is a large number of flat water pipes having water passages, which are arranged in parallel with each other at a predetermined distance. 3 is a corrugated fin interposed between two adjacent flat water pipes, 4, 5
are a pair of header tanks that communicate with both the upper and lower ends of the flat water pipe 2; a water suction pipe 6 is connected to the right side of the front wall of the upper header tank 4, and a water drain is connected to the left side of the front wall of the lower header tank 5. A pipe 7 is connected.

8 is an L-shaped bracket when seen from the front for attaching the radiator 1 to the vehicle body (not shown); 9 is a bulge protruding downward from the horizontal mounting wall 8a of the bracket 8; This is a through hole having the same shape as the bulge 9 correspondingly formed in the upper wall 4a of the upper header tank 4.

When the bracket 8 is attached to the header tank 4, when the bulge 9 of the wall 8a to which it is attached is fitted into the through hole 10 of the upper header tank 4, the bracket 8 can no longer be moved and its position is fixed. can be determined very easily. In this state, the bracket 8 is held with a jig, and the entire lower surface of the mounting wall 8a is brazed to the upper wall 4a of the header tank 4 in a tight state by vacuum brazing or the like.

As shown in FIG. 2, with the bulging part 9 of the bracket 8 fitted into the through hole 10 of the header tank 4, the bulging part 9 is caulked to remove the bracket 8.
If fixed to the upper wall 4a of the header tank 4,
No jig is required.

In the above embodiment, one bracket 8 is attached to the upper wall 4a of the upper header tank 4, but in some cases, two brackets 8 may be attached to the upper wall 4a. may be attached to the lower wall of the lower header tank 5.

In these cases, as shown in Figure 2,
The bulge 9 has a size that fits into the through hole 10, and in order to prevent the liquid in the header tank from leaking, the bracket 8 is inserted with the bulge 9 fitted into the through hole 10. It goes without saying that the wall 8a to be attached is tightly brazed to the header/tank side wall 4a around the through hole 10.

Further, although the bracket 8 is L-shaped when viewed from the front, it may be U-shaped when viewed from the front, or may have another shape.

Further, although the illustrated radiator 1 is of a vertical type, this invention can also be applied to a horizontal type radiator in which header tanks 4 and 5 are arranged on both the left and right sides.

In the above embodiment, a case where this invention is applied to a radiator is shown, but this invention can be similarly applied to other heat exchangers such as oil coolers and car heaters.

Effects of the Invention As described above, the bracket fixing device in the heat exchanger of this invention has a through hole 10 at the location where the bracket 8 of the side wall 4a of the header tank 4 provided in the aluminum heat exchanger 1 is to be attached.
is drilled, and a bulge 9 is provided on the wall 8a to which the bracket 8 is attached, which protrudes toward the header/tank side wall 4a and is large enough to fit into the through hole 10.The bulge 9 is fitted into the through hole 10. Since the wall 8a to which the bracket 8 is attached is tightly brazed to the side wall 4a of the header/tank around the through hole 10, it is possible for an operator to attach the bracket 8 to the header/tank side wall 4a in the heat exchanger assembly stage. 8, the through hole 10 will remain open in the side wall 4a of the header tank 4, so the through hole 10 will remain open during the performance inspection of the heat exchanger after brazing, especially during the air tightness test. It is possible to easily detect that the bracket 8 has been installed, and it is possible to reliably find out if the bracket 8 has been forgotten to be installed.This makes it possible to completely prevent the sale of the heat exchanger 1 that does not include the bracket 8, and to prevent the installation of the bracket 8 into the vehicle body. There is no possibility that the heat exchanger cannot be installed during the installation stage.

Further, according to this invention, the fixing work of the bracket 8 is easy, and the productivity of the heat exchanger 1 can be greatly increased. Since the bulging part 9 can be formed by simply pressing the bracket from above with a press and protruding downward, the amount of material used is very small, the manufacturing cost of the bracket 8 is very low, and the heat exchange This has the effect of reducing the manufacturing cost of the vessel 1.

Note that if the bracket 8 is fixed to the upper wall 4a of the header tank 4 by caulking the bulge 9 with the bulge 9 fitted into the through hole 10, no jig is required. Therefore, the work of assembling the heat exchanger 1 becomes easier, and the equipment cost is reduced because no jig is required, which has the advantage that the manufacturing cost of the heat exchanger can be further reduced.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a radiator showing an embodiment of this invention, showing the state before a bracket is attached. FIG. 2 is a partially enlarged sectional view showing a modified example of mounting the bracket, and FIG. 3 is a partially perspective view of a radiator showing a conventional example. 1...Radiator (heat exchanger), 4...Header tank, 4a...Upper side wall, 8...Bracket, 8a...Wall to be attached, 9...Bulging portion, 10...
Through hole.

Claims (1)

[Scope of utility model registration request] A through hole 10 is drilled at the location where the bracket 8 is to be attached to the side wall 4a of the header tank 4 provided in the heat exchanger 1 made of aluminum, and a through hole 10 is formed in the wall 8a to which the bracket 8 is attached so as to protrude toward the side wall 4a of the header tank 4. A bulging portion 9 having a size to fit into the through hole 10 is provided, and with the bulging portion 9 fitted into the through hole 10, the mounting wall 8a of the bracket 8 is attached to the header/tank side wall 4a of the through hole 10. Fixing device for brackets in heat exchangers that are tightly brazed at the periphery.