JPS6130062Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an oil cooler for a torque converter in an industrial vehicle such as a forklift.

(Prior Art) The oil cooler of a torque converter (hereinafter abbreviated as a torque converter) in a conventional forklift is generally built into the lower part of a radiator for cooling the engine.

(Problem that the invention aims to solve) However, since it must be assembled in a limited space, it is not only expensive in terms of manufacturing and assembly, but also has problems due to its capacity and heat transfer area. Due to these restrictions, there is a limit to the improvement of cooling capacity. In addition, as is commonly known, in a forklift, the radiator is located at the rear of the vehicle body, while the torque converter is generally located relatively at the front of the vehicle body. Not only does it require piping, but the piping must be routed through a narrow space, making installation difficult and causing problems such as increased oil flow resistance.

In addition, in the case of an air-cooled type, although the oil cooler is installed separately from the radiator, it is usually installed in the engine room alongside the radiator, and therefore the cooling performance of the oil cooler is In order to increase the noise level, it is common to open the lower part of the vehicle body corresponding to the engine room, but when the lower part of the engine room is opened in this way, it results in problems such as noise leakage.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an oil cooler for a torque converter that can eliminate the above-mentioned conventional drawbacks.

(Means for Solving the Problems) The technical means for solving the above problems is to create a substantially loop-shaped cooling section by appropriately bending the pipe material, which has piping ports to be connected to the torque converter side at both ends. A plate member such as a steel plate, an Anomium light alloy plate, a stainless steel plate, etc. is attached in contact with the cooling unit so as to close the space surrounded by the cooling unit, and the space surrounded by the cooling unit is closed. The cooling unit was mounted on the underside of the frame at the bottom of the vehicle body so that it was exposed to the outside air.

(Function) Therefore, the oil cooler installed at the bottom of the vehicle body can effectively cool the oil flowing from the torque converter by being exposed to the outside air and by the heat dissipation effect of the plate member. The lower part of the engine room is shielded by the plate-like member, and acts to prevent leakage of noise.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings. As shown in FIGS. 1 and 2, the oil cooler 5 of this embodiment has a rectangular (or circular) shape.
The cooling section 2 is formed by bending the tube material 1 to form a substantially loop-shaped cooling section 2, for example, a rectangular (or U-shaped) shape as shown in the figure.
At the same time, mounting brackets 3 made of angle materials are fixed to the four corners of the cooling section 2, and piping ports 4 to be connected to the torque converter side are provided at both ends of the tube material 1. A reinforcing rib 6 is horizontally suspended between the opposing parts of the cooling part 1, and a rectangular plate member 7 is fixed on the reinforcing rib 6 with bolts so that its circumferential surface contacts the inner circumferential surface of the cooling part 2. As a sound absorbing material 8 on the upper surface of the plate member 7,
For example, it has a structure in which epoxy resin is poured and hardened.

That is, the oil cooler 5 has a cooling section 2 formed in a substantially loop shape, and a space surrounded by the cooling section 2 is closed by a plate member 7 and a sound absorbing material 8. As shown in FIG. 3, the oil cooler 5 constructed in this manner is attached to the lower surface of the frame of the forklift at the lower center of the vehicle body using bolts so as to be exposed to the outside air.

Therefore, the oil cooler 5 installed as described above cools the oil flowing in from one port 4 while it flows out from the other port 4. In this case, the oil cooler 5 cools the oil while it flows out from the other port 4. Since the plate member 7, which is exposed to water and is assembled in contact with the cooling part 2, functions as a heat sink, the oil can be cooled very effectively.

Further, since the plate-like member 7 in the oil cooler 5 is provided so as to shield the space surrounded by the cooling section 2, it functions to close off the engine room when it is installed in the lower part of the vehicle body. .
In other words, in the case of a forklift, the lower center of the vehicle body, which is directly below the engine, is generally open, so by placing the oil cooler 5 in this open area, it is possible to close it off. This can prevent noise from leaking from the engine room. Moreover, since the sound absorbing material 8 is provided on the upper surface of the plate-shaped member 7, the soundproofing can be performed more effectively.

In this embodiment, the cooling section 2 is described as having a rectangular shape, but the shape of the cooling section is not limited to this. For example, the tube material 1 may be bent into a meandering shape as shown in FIG. This meandering shape has the advantage that the heat dissipation area can be set larger.

(Effects of the invention) As described in detail above, the oil cooler of the invention has a simpler structure and is easier to manufacture and install than conventional radiator built-in types, reducing costs. , it is possible to increase the cooling effect by increasing the heat dissipation area without any restrictions on the assembly space, and since it is located close to the torque converter, it has various effects such as short and easy piping. It is something that brings.

Furthermore, the present invention aims at diversification by providing functions as a heat sink and a sound insulating plate to a plate-like member attached so as to close off the space surrounded by the almost loop-shaped cooling section. Therefore, it is possible to effectively improve the oil cooling function and prevent noise leakage from the engine room.
It is extremely useful in practice as an oil cooler for torque converters in industrial vehicles.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view showing an oil cooler, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a schematic diagram of a forklift equipped with an oil cooler, and Fig. 3 is a schematic diagram of a forklift equipped with an oil cooler. FIG. 4 is a plan view showing another embodiment of the cooling section of the oil cooler. 1...Pipe material, 2...Cooling section, 3...Bracket, 4...Piping port, 5...Oil cooler,
7...Plate member.

Claims (1)

[Scope of utility model registration request] The pipe material, which has piping ports to be connected to the torque converter side at both ends, is bent appropriately to form an almost loop-shaped cooling section, and a plate-like material is formed so as to close the space surrounded by this cooling section. An oil cooler for a torque converter in an industrial vehicle, in which a member is attached in contact with a cooling section, and the cooling section thus formed is attached to the lower surface of a frame at the bottom of a vehicle body so as to be exposed to the outside air.