JPH088247Y2 - Oil cooler mounting structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an oil cooler mounting structure, and in particular, a metal tank of a radiator is screwed by using a metal nut and then brazed. The present invention relates to an oil cooler mounting structure for mounting an oil cooler.

[Conventional technology]

Conventionally, an oil cooler is housed in a radiator tank, and heat exchange is performed by cooling water flowing in the tank.

In such an oil cooler, conventionally, a connector made of a copper material fixed to the oil cooler is inserted through a tank made of a copper material of a radiator.
After the nut is screwed onto this connector, the tank, the connector, and the nut are brazed to each other so that they are fixed in the tank.

As a structure for mounting such an oil cooler on a radiator tank, for example, one disclosed in Japanese Utility Model Laid-Open No. 58-96011 is known.

6 and 7 show such an oil cooler mounting structure, and in FIG. 6, reference numeral 11 indicates a radiator mounted on a vehicle.

The radiator 11 is configured by arranging tanks 15 made of a copper-based material above and below a core portion 13.

An oil cooler 17 is housed in the lower tank 15.

As shown in FIG. 7, the oil cooler 17 includes an oil cooler body 19 made of a copper system material and a connector 21 made of a copper system material fixed to the oil cooler body 19 at predetermined intervals. It consists of and.

The connector 21 includes a seat portion 23 and a male screw portion 25 formed on the seat portion 23 and having a screw formed on the outer periphery thereof. Oil is allowed to flow through the connector 21, and an oil flow pipe 27 is fixed to the tip of the connector 21.

In addition, the tank 15 has two mounting holes 29 at predetermined intervals.
The male screw portions 25 of the connector 21 are inserted into the mounting holes 29 from the inside of the tank 15, respectively, and the male screw portions 21 are projected from the tank 15 to the outside.

A metal nut 31 is screwed into the male screw portion 25 protruding from the tank 15 to the outside.

Further, in order to prevent the leakage of the cooling water from the mounting hole 29 formed in the tank 15, the tank 15, the connector 21, the nut 31
Are brazed to each other, and this brazing work is
It is performed separately inside and outside the tank 15.

In such an oil cooler mounting structure, the nut 31 is screwed into the connector 21 and the tank 15, the connector 21 and the nut 31 are brazed to each other, so that the oil cooler 17 is attached to the tank.
Can be stuck within 15.

[Problems to be solved by the device]

However, in such an oil cooler mounting structure, since the brazing inside and outside the tank 15 is performed separately, it is necessary to perform brazing work twice, which is a troublesome work.

In addition, when brazing one after the other, it is necessary to heat the other part after the one brazing, and in this case, one brazing part melts and flows down. was there. For this reason, there is a problem that the processing of the wax that has flowed down takes time, and that brazing may be incomplete, and the cooling water inside the radiator 11 leaks out.

The present invention has been made to solve the above problems, and the oil cooler mounting structure according to claim 1 can complete the brazing of the inside and the outside of the tank in one operation. The object of the present invention is to provide an oil cooler mounting structure capable of reducing the time and effort required for brazing, and at the same time completely eliminating brazing and preventing brazing, and to mount the oil cooler according to claim 2. The structure is intended to allow the brazing to be easily poured between the tank, the connector and the nut, thereby further reducing the labor required for the brazing.

[Means for solving the problem]

The oil cooler mounting structure according to claim 1 includes a radiator tank made of a copper-based material, an oil cooler main body housed in the tank, and a mounting hole formed in the tank, which is mounted on the oil cooler main body. A connector made of a copper-based material through which oil flows, which is inserted from the inside of the tank, and a metal nut for screwing a female screw portion to a male screw portion of the connector outside the tank, In an oil cooler mounting structure in which a tank, the connector, and the nut are brazed to each other, in the female screw portion of the nut or the male screw portion of the connector, a flow-in groove through which brazing material flows toward the tank is provided. It is formed in the vertical direction.

The oil cooler mounting structure according to claim 2 is the oil cooler mounting structure according to claim 1, wherein the male screw portion of the connector is projected outward from the tank so that its tip is lower than the outer surface of the nut. Is.

[Action]

In the oil cooler mounting structure according to claim 1, in the female screw portion of the nut or the male screw portion of the connector, a flow-in groove into which the wax flows toward the tank is formed in the height direction of the nut. , Insert it from the inside of the tank into the mounting hole formed in the tank, and screw the female screw part of the metal nut into the male screw part of the connector protruding from the tank to the outside. Fix the tank so that it is positioned, heat the connector and its vicinity, and apply braze to the inflow groove of the female screw part of the nut or the male screw part of the connector to melt the braze and put it on the tank side of the inflow groove. Inflow, wax flows from the inflow groove into the surrounding space, tanks, connectors,
The nuts are brazed together.

The oil cooler mounting structure according to claim 2 is the oil cooler mounting structure according to claim 1, wherein the male screw portion of the connector is projected outward from the tank so that its tip is lower than the outer surface of the nut. Fix the tank so that the connector is located at the top, heat the connector and its vicinity, and apply the braze to the tip of the male screw part of the connector, the braze melts and collects on the upper part of the male screw part tip,
Then, the wax flows into the tank side of the inflow groove, the braze flows into the surrounding gap from the inflow groove, and the tank, the connector, and the nut are brazed to each other.

〔Example〕

The present invention will now be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 shows an embodiment of the oil cooler mounting structure of the present invention. In the figure, reference numeral 35 denotes a tank made of a copper-based material of a radiator.

An oil cooler 37 is housed in the tank 35.

The oil cooler 37 includes an oil cooler body 39 made of a copper-based material and a connector 41 made of a copper-based material fixed to the oil cooler body 39 at a predetermined interval.
It consists of and.

These connectors 41 are composed of a seat portion 43 and a male screw portion 45 formed on the seat portion 43 and having a screw on the outer circumference. Oil is allowed to flow through the inside of the connector 41, and an oil flow pipe 47 is fixed to the tip thereof.

In addition, the tank 35 has two mounting holes 49 at predetermined intervals.
The male screw parts 45 of the connector 41 are inserted into the mounting holes 49 from the inside of the tank 35, and the male screw parts 45 are projected from the tank 35 to the outside.

Then, for example, an iron nut 51 is screwed into the male screw portion 45 protruding from the tank 35 to the outside.

A screw hole is formed in the nut 51, and the inner surface of the screw hole is a female screw portion 53. As shown in FIGS. 2 to 4, the female screw portion 53 is provided with two inflow grooves 55 in the lengthwise direction of the nut 51, into which the wax flows toward the tank 35. The flow-in groove 55 has a semicircular cross section, and its diameter is, for example, 2 to 3 times the height of the thread of the female screw portion 53.

In addition, the male screw part 45 of the connector 41 has a nut at the tip.
When the tank 35 is fixed so that the connector 41 is located at the upper portion, the male screw portion is protruded from the tank 35 so as to be lower than the outer surface 57 of the 51.
The tip of 45 and the outer surface 57 of the nut 51 allow the brazing pocket
59 are formed.

With the oil cooler mounting structure configured as described above,
Screw the nut 51 onto the connector 41 to connect the tank 35, connector 41,
The oil cooler 37 can be fixed in the tank 35 by brazing the nuts 51 to each other.

Further, in the oil cooler mounting structure configured as described above, as shown in FIG. 5, the connector 41 of the oil cooler main body 39 is connected to the tank 35 in the mounting hole 49 formed in the tank 35.
Inserted from the inside of the tank 35, further, the female screw portion 53 of the nut 51 is screwed into the male screw portion 45 of the connector 41 protruding from the tank 35, and in this state, the tank 35 is placed so that the connector 41 is located on the upper side. Fix, heat connector 41 and its vicinity,
By applying the braze 61 to the tip of the male screw portion 45 of the connector 41, the braze 61 melts and collects in the braze reservoir recess 59, and then the braze 61 flows into the tank 35 side of the flow-in groove 55 and surrounds the flow-in groove 55. Flows into the gap.

Therefore, in the oil cooler mounting structure configured as described above, the wax 61 is fitted to the female screw portion 53 of the nut 51 and the tank 35
Since the flow-in groove 55 that flows into the side is formed in the height direction of the nut 51, and the male screw portion 45 of the connector 41 is projected from the tank 35 to the outside so that its tip is lower than the outer surface 57 of the nut 51, Connect the connector 41 of the oil cooler body 39 to the tank
The female screw portion 53 of the nut 51 is inserted into the male screw portion 45 of the connector 41 that is inserted into the mounting hole 49 of the 35 from the inside and projects from the tank 35 to the outside.
After fixing the tank 35 so that the connector 41 is located in the upper part in this state, the connector 41 and its vicinity are heated, and by applying the braze 61 to the tip of the male screw part 45 of the connector 41, The braze 61 melts and collects in the braze reservoir recess 59, and then the braze 61 flows into the tank 35 side of the flow-in groove 55, flows into the surrounding gap from the flow-in groove 55, and the tank 35, the connector 41, and the nut 51 are mutually brazed. The brazing of the inside and the outside of the tank 35 can be completed in one operation, and the labor required for the brazing can be reduced.

Further, since it is not necessary to braze one after the other, it is possible to eliminate the flow of the braze 61 and to complete brazing, which ensures the leakage of the cooling water in the tank 35. Further, it is possible to prevent the generation of a defective product in which the solder has flown down, and it is not necessary to treat the solder 61 that has flowed down.

Also, attach the male screw part 45 of the connector 41 to the nut
Since it protrudes outward from the tank 35 so as to be lower than the outer surface 57 of the 51, the outer surface 57 of the nut 51 and the upper portion of the tip of the male screw portion 45 form a brazing reservoir recess 59 and the connector 41.
And by heating the vicinity thereof and applying the braze 61 to the tip of the male screw part 45 of the connector 41, the braze 61 is melted and accumulated in the braze reservoir recess 59, and then the braze 61 flows into the groove.
55 flows into the tank 35 side, flows into the gap around it, and the braze 61 can be easily poured between the tank 35, the connector 41, and the nut 51, thereby further reducing the labor required for brazing. You can

In addition, in the above-described embodiment, the example in which the brazing 61 flows into the tank 35 side and the two flow-in grooves 55 are formed in the female screw portion 53 has been described. However, the present invention is not limited to the above-described embodiment, Of course, one groove may be formed in the female screw portion, or three or more grooves may be formed. In this case, it is necessary to pay attention to the strength of the nut to determine the number of inflow grooves.

Further, in the above embodiment, the male screw portion 45 of the connector 41,
The example in which the tip protrudes outward from the tank 35 so that the tip thereof is lower than the outer surface 57 of the nut 51 has been described, but the present invention is not limited to the above embodiment, and the tip of the male screw part and the nut Even if the height of the outer surface is substantially the same, the same effect as that of the above-described embodiment can be obtained. In this case, it is necessary to heat the connector and its vicinity and then apply brazing to the inflow groove of the female screw portion.

Furthermore, in the above-described embodiment, an example in which the flow-in groove 55 is formed in the female screw portion 53 of the nut 51 has been described, but the present invention is not limited to the above-described embodiment, and the flow-in groove is formed in the male screw portion of the connector. Even if it is formed, it is possible to obtain substantially the same effect as that of the above embodiment.

[Effect of device]

In the oil cooler mounting structure according to the first aspect of the present invention, the female screw portion of the nut or the male screw portion of the connector is formed with a flow-in groove in the height direction of the nut through which the wax flows toward the tank. , Insert it from the inside of the tank into the mounting hole formed in the tank, and screw the female screw part of the metal nut into the male screw part of the connector that protrudes from the tank to the outside. Fix the tank so that the connector and its vicinity are heated, and apply brazing to the inflow groove of the female screw part of the nut or the male screw part of the connector, the wax melts and flows into the tank side of the inflow groove. , The brazing material flows into the surrounding space from the groove, and the tank, connector, and nut are brazed to each other, and the brazing inside and outside the tank is completed in one operation. Succoth can, thereby, it is possible to reduce the labor required for brazing can be performed brazed completely eliminating the wax rundown.

The oil cooler mounting structure according to claim 2 is the oil cooler mounting structure according to claim 1, wherein the male screw portion of the connector is projected outward from the tank so that its tip is lower than the outer surface of the nut. Fix the tank so that the connector is located at the top, heat the connector and its vicinity, and apply the braze to the tip of the male screw part of the connector, the braze melts and collects on the upper part of the male screw part tip,
Then, the wax flows into the tank side of the inflow groove, flows into the gap around it, and the tank, the connector, and the nut are brazed to each other, and the brazing inside and outside the tank can be completed in one operation. ,tank,
The brazing material can be easily poured between the connector and the nut, so that the labor required for brazing can be further reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of an oil cooler mounting structure of the present invention. FIG. 2 is a plan view showing the nut of FIG. FIG. 3 is a vertical sectional view taken along the line III-III in FIG. FIG. 4 is a vertical sectional view taken along the line IV-IV in FIG. FIG. 5 is a longitudinal sectional view showing a state in which a brazing is applied to the tip of the male screw portion of the connector. FIG. 6 is a side view showing a radiator to which a conventional oil cooler is attached. FIG. 7 is a vertical sectional view showing a conventional oil cooler mounting structure. [Explanation of symbols for main parts] 35 …… Tank 37 …… Oil cooler 39 …… Oil cooler body 41 …… Connector 45 …… Male screw part 49 …… Mounting hole 51 …… Nut 53 …… Female screw part 55 …… Inflow groove 57 …… Outside surface.

Claims (2)

[Scope of utility model registration request] 1. A radiator tank (35) made of a copper-based material, and an oil cooler body (3) housed in the tank (35).
9) and a copper-based material through which oil flows, which is inserted from the inside of the tank (35) into a mounting hole (49) formed in the tank (35) and mounted in the oil cooler body (39). And a metal nut (51) for screwing a female screw portion (53) to a male screw portion (45) of the connector (41) outside the tank (35), In an oil cooler mounting structure in which a tank (35), the connector (41) and the nut (51) are brazed to each other, a female screw part (53) of the nut (51) or a male part of the connector (41) is provided. An oil cooler mounting structure characterized in that a threaded groove (55) into which the brazing filler metal flows toward the tank (35) side is formed in the screw portion (45) in the height direction of the nut (51). . 2. The oil according to claim 1, wherein the male screw portion (45) of the connector (41) is projected from the tank (35) to the outside so that its tip is lower than the outer surface of the nut (51). Cooler mounting structure.