JPH064024Y2 - Oil cooler mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mounting structure of an oil cooler such as a torque converter mainly used in an automatic transmission of an automobile.

[Prior Art] In an automobile employing an automatic transmission using a torque converter, an oil cooler body for cooling oil in the torque converter is often provided in a lower tank of a radiator. In this way, when the oil cooler main body is built in the lower tank, the connecting ends provided on both sides of the oil cooler main body are projected outward from the mounting holes of the lower tank, and the nuts are attached to the threads provided on the outer periphery of the connecting end. The oil cooler body is fixed to the lower tank by screwing. A joint pipe is connected to the tip of the connecting end by using a flare nut or the like, and the joint pipe and the inside of the torque converter are connected via an oil passage.

However, according to such a structure, a nut for fixing the oil cooler main body to the lower tank and a nut for connecting the connecting end and the joint pipe are required, and more labor is required. For this reason, as a prior art of the present invention, as shown in, for example, Japanese Utility Model Application Laid-Open No. 57-66396, there is one in which the connecting end and the joint pipe are previously integrated to reduce the number of parts.

[Problems to be Solved by the Invention] However, the direction of the joint pipe is often restricted by the space in the engine room, the piping path of the oil passage, and the like. For example, as schematically shown in FIGS. 6 and 7, only one joint pipe 109 is connected to the lower tank 1 in order to avoid interference with other devices.
If the connection end 111 of the oil cooler body 108 and the joint pipe 109 are integrated in advance when it is necessary to incline in the longitudinal direction of the oil cooler body 03.
Cannot be stored in the lower tank 103 of the radiator 101. Therefore, in such a case, the connecting end 111 of the oil cooler main body 108 is projected to the outside of the lower tank 103 through the mounting hole 112, and the connecting end 11
1, the nut 113 is screwed to fix the oil cooler body 108, and then the flare nut 1 is attached to the connecting end 111.
It becomes unavoidable to connect the joint pipe 109 using 13a or the like. That is, with such a structure, the nut 1 for fixing the oil cooler body 108 to the lower tank 103 is provided at at least one of the connecting end portions.
13 and the nut 113a for connecting the connecting end 111 and the joint pipe 109 are required, which causes an increase in the number of parts and labor.

The present invention aims to eliminate such a problem.

[Means for Solving the Problems] In order to achieve such an object, the present invention has an oil cooler body having connecting ends on both sides built into a lower tank of a radiator, and the connecting end is provided from a mounting hole provided in the lower tank. In the attachment structure of the oil cooler in which the joint pipe is connected to each connecting end, and the connecting end and the joint pipe are integrated, and each joint pipe is attached to the tip side thereof. Is bent obliquely upward and is inclined by a certain angle from the vertical direction in the longitudinal direction of the lower tank.

[Operation] With such a configuration, the oil cooler can be effectively attached to the lower tank of the radiator even if the connection ends of the oil cooler body and the joint pipe are integrated in advance. That is, by bending each joint pipe diagonally upward and further inclining it to the longitudinal direction of the lower tank by a certain angle from the vertical direction, when installing the oil cooler, the length corresponding to the depth of the joint pipe with respect to the depth dimension of the lower tank. The joint pipe can be easily inserted into the mounting hole of the lower tank. Therefore, by inserting both joint pipes into the mounting holes from the inside of the lower tank and rotating the oil cooler body while sliding the joint pipe to the inclined side, the oil cooler body can be housed in the lower tank. . Next, a nut is inserted from the tip side of the joint pipe protruding outside the lower tank, and the oil cooler is fixed to the lower tank by the nut.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 is a schematic view of a radiator of an automobile, and FIG. 2 is a partial sectional view showing a main part. The radiator 1 has a core portion 4 provided between an upper tank 2 and a lower tank 3, and is arranged in front of an engine 5 horizontally mounted in an engine room.

The engine 5 includes an automatic transmission using a torque converter or the like, and a switching device 6 for the automatic transmission is provided on the front surface of the engine 5. The switching device 6 connects the change plate 6a supported on the front surface of the automatic transmission and the change lever in the vehicle compartment via a cable 6b, and holds the cable 6b on a plurality of brackets 6c fixed to the engine 5 and the like. The protective boot 6d attached to the cable 6b is provided.

An oil cooler 7 for cooling the oil in the torque converter used in the automatic transmission is attached to the lower tank 3 of the radiator 1. Oil cooler 7
Is an oil cooler body 8 provided in the lower tank 3.
And a pair of joint pipes 9 provided on both sides of the oil cooler body 8 so as to project outside the lower tank 3, and each joint pipe 9 and the inside of the torque converter are connected to an oil hose 10 or the like. Connected via.

The oil cooler main body 8 is provided with a large number of heat radiation fins and the like inside a casing, and is provided with connecting ends 11 on both sides thereof. An oil passage 11a communicating with the inside of the casing is provided inside each connecting end 11, and a screw portion 11b is provided on the outer circumference. Then, each threaded portion 11b is penetrated through the mounting hole 12 provided in the rear wall 3a of the lower tank 3 to be projected to the outside, and the nut 13 is screwed to the threaded portion 11b to fix the oil cooler 7 to the lower tank 3. I am doing it. The rear wall 3a of the lower tank 3 is slightly inclined obliquely downward, and an O-ring 14 is interposed between the inner wall surface 3b and the connecting end 11. The joint pipes 9 are fixed to the ends of the connecting ends 11 by brazing or the like.

The oil passage 11 is provided inside each joint pipe 9.
The oil passage 9a communicating with a is provided, and the base end side 9b is provided.
Is slanted slightly downward with the connecting end 11. The tip side 9c of the one joint pipe 9 is bent obliquely upward so as to avoid interference with the change plate 6a and the protective boot 6d of the switching device 6 which are in the vicinity thereof, and at the same time, in the longitudinal direction by a certain angle θ from the vertical direction. Inclined to. And like this joint pipe 9,
The tip side 9c of the other joint pipe 9 is also inclined in the same direction by the same angle θ. As described above, when the tip end side 9c of the joint pipe 9 is inclined by the angle θ, the length of the joint pipe 9 corresponding to the depth dimension of the lower tank 3 becomes substantially short during mounting.

According to such a configuration, when the oil cooler 7 is attached to the lower tank 3, it can be performed as follows, for example. First, the tip end side 9c of each joint pipe 9 is inserted into the mounting hole 12 from the inside of the lower tank 3, and the oil cooler body 8 is rotated forward (see the arrow in FIG. 2) while the joint pipe 9 is inclined. By sliding (see the arrow in FIG. 1), the joint pipe 9 and the connecting end 11
It is possible to project the threaded portion 11b of the above from the mounting hole 12 to the outside of the lower tank 3, and to house the oil cooler main body 8 at a specified position in the lower tank 3. Next, from the tip side 9c of each joint pipe 9, the nut 13
Are mounted and screwed onto the threaded portion 11b of the connecting end 11, and the oil cooler 7 is fixed to the lower tank 3.

With such a configuration, the oil cooler 7 can be attached to the lower tank 3 using the single nut 13 at each attachment portion, so that the number of parts can be reduced and the interference with the adjacent switching device 6 or the like can be reduced. Can be effectively avoided. Moreover, each joint pipe 9 is previously
Since it is integrated with each connecting end 11, the mounting work when mounting the oil cooler 7 on the lower tank 3 becomes simple and the working efficiency can be reasonably improved.

The embodiment of the present invention has been described above.
Of course, the present invention is not limited to the above embodiment. For example, the joint pipe is not limited to the mounting mode shown in the drawings,
The direction of tilting may be opposite to that shown in the drawings.

[Effects of the Invention] Since the present invention is configured as described above, since the joint pipe tip side is tilted by a certain angle from the vertical direction, from the bending position of the joint pipe to its tip,
The length of the lower tank in the depth direction is substantially shortened, improving workability when assembling the oil cooler to the lower tank.In addition, the piping length of the oil hose connected to the joint pipe can be shortened. It is possible to provide an oil cooler mounting structure capable of effectively avoiding interference with other nearby members and the like, and reducing the number of parts and the labor required for mounting.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a rear view of a radiator, FIG. 2 is a partial cross-sectional view showing an attachment mode of an oil cooler, and FIG. FIG. 4 is a schematic front view, FIG. 4 is a plan view schematically showing the vicinity of the joint pipe, and FIG. 5 is a side view schematically showing the vicinity of the joint pipe. 6 and 7 show a conventional example, FIG. 6 is a rear view of a radiator, and FIG. 7 is a second view.
It is a fragmentary sectional view equivalent to a figure. DESCRIPTION OF SYMBOLS 1 ... Radiator 3 ... Lower tank 7 ... Oil cooler 8 ... Oil cooler main body 9 ... Joint pipe, 9a ... Tip 11 ... Connection end 12 ... Mounting hole 13 ... Nut, θ ... Constant angle

Claims (1)

[Scope of utility model registration request] 1. An oil cooler main body having connecting ends provided on both sides is built in a lower tank of a radiator, the connecting ends are projected outside from a lower tank through a mounting hole provided in the lower tank, and a joint pipe is provided at each connecting end. In a mounting structure of an oil cooler that is connected, the connecting end and the joint pipe are respectively integrated, and each joint pipe is bent obliquely upward at its tip side, and from the vertical direction in the longitudinal direction of the lower tank. An oil cooler mounting structure characterized by tilting at a fixed angle.