JPH0741127U - Automatic transmission oil cooler - Google Patents

Abstract

(57) [Summary] [Purpose] Automatic transmission that can be easily installed in the middle of the radiator hose piping that connects the radiator and engine, and that can separate the oil cooler and radiator of the automatic transmission and operate them independently. To provide the machine oil cooler. [Structure] A cylindrical pipe 3 having an inlet pipe 1 and an outlet pipe 2 for cooling water, and an inner pipe 6a and an outer pipe 6b arranged inside the cylindrical pipe 3 and communicating with an oil inlet pipe 4 and an oil outlet pipe 5. Oil distribution pipe 6 having a double pipe structure, and this oil distribution pipe 6
In the oil cooler of the automatic transmission, which is provided with the cooling fins 4g arranged therein, the cylindrical pipe 3 and the outer cylinder 6 are provided.
Semicircular body 3 obtained by dividing b in a direction orthogonal to the axial direction
b, 3d, 6g, 6h, and the edge portion 6e of the outer cylinder 6b,
6f is provided to project outward, and the edge portion is sandwiched by the edge portions 3c and 3f of the cylindrical pipe 3 and the cylindrical pipe 3 and the oil flow pipe 6 are joined at the same time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil cooler for an automatic transmission, and more particularly to an oil cooler for an automatic transmission installed in the middle of a radiator hose pipe of an automobile.

[0002]

[Prior art]

 In automatic transmissions for automobiles, an oil cooler is installed in the lubrication system in order to maintain the viscosity of the lubricating oil at an appropriate level and obtain a good lubrication effect by supplying the lubricating oil after appropriately lowering the temperature. There is. As such an oil cooler, as shown in FIG. 3, it is integrally attached to the lower part of a radiator that radiates engine cooling water to cool the lubricating oil by heat exchange between the lubricating oil and the cooling water. There is. In the figure, an oil cooler 3 is installed inside a water tank 2 provided under the radiator 1, and a connecting pipe 4 of the oil cooler 3 can be connected to a lubricating system of an automatic transmission (not shown). It is shown. As a radiator built-in oil cooler having such a structure, a double pipe type or a multi-plate type has been put into practical use. Among the radiator internal oil coolers described in Japanese Utility Model Publication No. 57-19027 shown in FIG. 4, a multi-layered oil type oil is installed inside a water tank 2 provided under a radiator 1. Cooler 5 is built in.

There is a type in which an oil cooler of an automatic transmission is integrally attached to a lower part of a radiator that radiates engine cooling water, and the lubricating oil is cooled by heat exchange between the lubricating oil and the cooling water.

[0004]

[Problems to be solved by the device]

 However, in the structure in which the oil cooler of the automatic transmission is integrally attached to the bottom of the radiator that dissipates the engine cooling water, a water tank for the oil cooler of the automatic transmission is provided below the radiator, and the oil cooler is inserted into it. However, in this structure, the radiator is a part that affects the distance between the engine and the road surface, that is, the road clearance, which is an obstacle to lowering the engine room and lowering the vehicle body. There was a problem that it was not possible to operate the oil cooler on the stand alone.

The present invention has been made in view of the above problems, and an object thereof is to easily install it in the middle of a pipe of a radiator hose connecting a radiator and an engine and to provide an automatic transmission. The purpose of the present invention is to provide an oil cooler for an automatic transmission in which the oil cooler and the radiator can be separated and each can work independently.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a cylindrical pipe having an inlet pipe and an outlet pipe of cooling water, an inner pipe arranged inside the cylindrical pipe and communicating with the oil inlet pipe and the outlet pipe, In an oil cooler of an automatic transmission including an oil distribution pipe having a double pipe structure composed of an outer cylinder and cooling fins arranged in the oil distribution pipe, the cylindrical pipe and the outer cylinder are orthogonal to the axial direction. Direction is divided into two semicircular bodies, and the edge portion of the outer cylinder is projected outward, and the edge portion is clamped by the edge portion of the cylindrical pipe to simultaneously form the cylindrical pipe and the oil flow pipe. It is characterized by being joined.

[0007]

[Action]

 According to the oil cooler of the automatic transmission configured as described above, it is easy to install the radiator hose that connects the radiator and the engine in the middle of the piping. This makes it easier to install the cooler, makes it easier to secure the road clearance even when the vehicle body is lowered, and allows the oil cooler of the automatic transmission to work independently.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment of an oil cooler of an automatic transmission according to the present invention. The oil cooler of the automatic transmission shown in the figure is a cylindrical pipe 3 having an inlet pipe 1 and an outlet pipe 2 of cooling water coaxially, and a front portion of the cylindrical pipe 3 connected at right angles. An oil inlet pipe 4, an oil outlet pipe 5 which is connected from the rear portion of the cylindrical pipe 3 at a right angle, and an oil inlet pipe 4 and an oil outlet pipe 5 which are coaxially mounted inside the cylindrical pipe 3 to communicate with each other. And an oil flow pipe 6 that allows oil to flow in the outer peripheral portion thereof.

As shown in the perspective views of FIGS. 2 (a) and 2 (c), the cylindrical tube 3 has an upper semi-circular body 3b having an edge 3a divided into two parts, and FIGS. 2 (a) and 2 (b). As shown in the perspective view, it is composed of a semi-circular body 3d having an edge 3c located outside the edge 3a. An oil circulation pipe 6 is provided inside the cylindrical pipe 3, and the oil circulation pipe 6 is arranged with a narrow outer cooling water passage portion 7 at a part between the oil circulation pipe 6 and the inner wall of the cylindrical pipe 3. It has a double-pipe structure composed of a cylinder 6a and an inner cylinder 6b, and both ends thereof are provided with closing plates 6c and 6d for partitioning an oil passage and a cooling water passage. As shown in the perspective views of FIGS. 2 (a), 2 (e) and 2 (d), the outer cylinder 6a is divided into two upper and lower semicircular bodies 6g and 6h having supporting portions 6e and 6f. , The supporting portions 6e, 6f are held in the space 3e between the two divided cylindrical tubes 3 and the cylindrical tube 3 and the outer cylinder 6a are caulked by the caulking portion 3f of the edge 3 so that they are simultaneously joined. It is positioned. The oil inlet pipe 4 and the oil outlet pipe 5 forming the oil passage are connected to each other between the two pipes 6a and 6b, and a cooling fin 6i is arranged between the two pipes 6a and 6b. On the other hand, inside the inner cylinder 9b, there are provided a front guide plate 6j and a rear guide plate 6k for smoothly circulating in the inner cooling water passage 8 or the inner cooling water passage 7.

In the oil cooler of the automatic transmission configured as described above, each of the inlet pipe 1 and the outlet pipe 2 of the cylindrical pipe 3 is connected in the middle of the radiator hose connecting the engine and the radiator, and lubrication of the automatic transmission is performed. The oil used for the oil passes from the oil inlet pipe 4 between both cylinders 6a and 6b of the oil flow pipe 6 and is discharged from the oil outlet pipe 5. On the other hand, the cooling water flowing from the inlet pipe 1 flows through the outer cooling water passage portion 7 or the inner cooling water passage portion 8 of the oil distribution pipe 6 by the front and rear guide plates 6j and 6k, and while the oil flows through the oil distribution pipe 6, the oil The cooling fins 6i arranged inside the distribution pipe 6 work effectively, and the heat of the oil and the cooling water is efficiently exchanged to cool the oil. The oil flow pipe 6 is held by the curved portion 3a of the cylindrical pipe 3 with a simple structure.

[0011]

[Effect of device]

 As described above in detail in the embodiments, according to the oil cooler of the automatic transmission according to the present invention, heat exchange between the oil and the cooling water is performed when the oil passes through the oil distribution pipe. Can be cooled efficiently. Since the oil cooler is connected in the middle of the radiator hose that connects the engine and radiator, the oil cooler is installed in the space that was a dead space and the vehicle body is lowered by omitting the water tank of the radiator for the oil cooler. Even so, it is easy to secure the road clearance, and the oil cooler of the automatic transmission can be operated independently.

[Brief description of drawings]

FIG. 1A is a vertical sectional view according to a first embodiment of the present invention. (B) is a cross-sectional view according to the first embodiment of the present invention.

FIG. 2 is a sectional view according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a radiator of an oil cooler structure of a conventional automatic transmission.

FIG. 4 is a sectional view of an oil cooler of a conventional automatic transmission having a built-in radiator.

[Explanation of symbols]

 1 inlet pipe 2 outlet pipe 3 cylindrical pipe 3b upper semi-circular body 3d lower semi-circular body 4 oil inlet pipe 5 oil outlet pipe 6 oil distribution pipe 6g upper semi-circular body 6h lower semi-circular body 7 cooling water passage

Claims (1)

[Scope of utility model registration request] 1. A double pipe structure comprising a cylindrical pipe having an inlet pipe and an outlet pipe of cooling water, and an inner cylinder and an outer cylinder arranged inside the cylindrical pipe and communicating with the oil inlet pipe and the oil outlet pipe. In an oil cooler of an automatic transmission comprising the oil flow pipe of No. 1 and cooling fins arranged in the oil flow pipe, a semicircular body obtained by dividing the cylindrical pipe and the outer cylinder into two in a direction orthogonal to the axial direction. The outer tube is provided with an edge portion projecting outward, and the edge portion is sandwiched by the edge portion of the cylindrical pipe, and the cylindrical pipe and the oil flow pipe are joined at the same time. Oil cooler for automatic transmission.