JPS5824673Y2 - Leakage oil drain device for transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge device for discharging hydraulic oil leaking into a case of a wet torque converter and transmission.

In torque converters, hydraulic oil leaks from seal links, valves, and the mating surfaces of the lubrication system.

If this leaked hydraulic oil is left in number 11, the case will be filled with hydraulic oil, causing problems such as power loss due to agitation of the hydraulic oil by rotating objects, functional deterioration of various parts due to hydraulic pressure inside the case, and oil leakage.

Conventionally, leaked hydraulic oil has been discharged using a scavenging pump a as shown in FIG.

However, the cost was high because it consists of a PTO (pump drive gear) that drives this pump a, a gear pump body, a strainer b that protects the gear pump from dust, etc., and the rotation and discharge volume of the gear pump Since the engine rotation is transmitted through gears, the discharge amount of the gear pump changes depending on the change in engine rotation.

The discharge amount is designed to discharge the entire amount of leaked oil even at the minimum engine speed, so as the engine speed increases, air is sucked in, causing problems such as seizing of the scavenging pump a, scratches due to dirt, and galling. .

The present invention was devised in view of the above circumstances, and its purpose is to provide a leaking oil draining device for a transmission that eliminates the need for a scavenging pump and can efficiently drain leaking oil. It's about doing.

Hereinafter, the present invention will be explained with reference to FIG. 2 and subsequent figures.

Reference numeral 1 in the drawings indicates a torque converter, and a portion indicated by a dashed line in FIG. 2 is a housing 2 of the torque converter 1.

An outlet 3 is formed on the side surface of the housing 2, and a nozzle mounting hole 4 is formed on the bottom of the housing 2.

Further, a guide path 5 from the nozzle mounting hole 4 to the outlet 3 is formed in the housing 2, and a constricted portion 6 is formed in the middle of the guide path 5.

Further, the guide path 5 opens on the inlet side of the constriction section 6, and this opening 7
Therefore, the inside of the guide path 5 communicates with the inside of the maggot puffer fish 2.

The outlet 3 communicates with an oil pan 9 via a pipe 8.

An injection nozzle 10 is installed in the nozzle device hole 4.

Hydraulic oil (3 to 8 kg/&rIL2) from inside the torque converter 1 is guided to the injection nozzle 10 via a pipe 11, and a pipe 12 is branched from the pipe 11. It communicates with the oil pan 9, and a regulator valve 13 is provided in the pipe 12.

This regulator valve 13 is for maintaining the internal working oil pressure of the torque converter 1 at 31g7f, x 2 or more.

Thus, the engine 14 is driven and the torque converter 1
When driven, the internal hydraulic oil of the torque converter 1 is maintained at 3 ky/m 2 or more by the regulator pulp 13 due to the rotational drive of the pump 15, and this hydraulic oil is injected into the guide path 5 from the injection nozzle 10.

Therefore, the leakage oil inside the housing 2 is leaked from the opening 7 to the conduit 5.
The hydraulic oil that was sucked into the tank and was injected into the oil pan 9.
is discharged.

The present invention has been detailed above, and the torque converter 1
A nozzle mounting hole 4 and an outlet 3 are provided in the lower part of the housing 2, a conduit 5 leading from the nozzle mounting hole 4 to the outlet 3 is provided in the housing 2, a restriction 6 is provided in the conduit 5, and a conduit 5 is provided in the conduit 5. The inlet side of the throttle 6 of No. 5 is opened, and the inside of the conduit 5 is communicated with the inside of the housing 2 through this opening 7, and the internal working oil of the torque converter 1 is injected into the conduit 5 through the nozzle mounting hole 4. Since the nozzle 10 is provided and the outlet 3 is communicated with the oil pan 9, a scavenging pump is not required and leaked oil can be efficiently discharged.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the circuit configuration of a fluid transmission having a conventional leakage oil draining device for a transmission, Fig. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and Fig. 3 is a diagram showing the leakage oil draining device according to the present invention. FIG. 2 is an explanatory diagram of a circuit configuration of a fluid transmission having a fluid transmission. 1 is the torque converter, 2 is the housing, 3 is the outlet, 4
is the nozzle mounting hole, 5 is the guide path, 6 is the aperture, 7 is the opening, 1
0 is the injection nozzle.

Claims (1)

[Scope of utility model registration request] A nozzle mounting hole 4 and an outlet 3 are provided in the lower part of the housing 2 of the torque converter 1, a guide path 5 leading from the nozzle mounting hole 4 to the outlet 3 is provided in the housing 2, a restriction 6 is provided in the guide path 5, The inlet side of the throttle 6 of the passage 5 is opened, and the inside of the conduit 5 is communicated with the inside of the Ujifugu 2 through this opening 7, and the internal working oil of the torque converter 1 is introduced into the conduit 5 through the nozzle device hole 4. A spray nozzle 10 is provided to spray the outlet 3.
A leakage oil discharge device for a transmission, characterized in that a leakage oil discharge device for a transmission is connected to an oil pan 9.