JPS58204905A - Device for communication between oil pump and oil filter housing of engine - Google Patents

Abstract

PURPOSE:To improve the assembling property of an engine and dispense with an oil pipe, by providing such a construction that the communication between an oil pump and a filter housing is established at the same time as the coupling of an oil sump to a crankcase. CONSTITUTION:A part of the bottom of an oil pan 4 is recessed so that an oil filter housing 16 is formed. The body 6a of a pump is provided with an outlet port 18 open in a coupling surface 6f on the pump body. An inlet port 19 for introducing oil into the housing 16 from the outlet port 18 is open in a coupling surface 16f on the housing. These ports 18, 19 communicate with each other at the same time as the coupling of the oil sump 4 and a crankcase 1. A positioning collar 20 is fitted in to prescribe the coupled positions of the pump body 6a and the oil sump 4 and ensure the communication between the ports 18, 19.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an engine lubricating oil supply system in which lubricating oil discharged from an oil pump is filtered by an oil filter and supplied to a predetermined lubricating section. The present invention relates to a communication device between an oil pump and an oil filter housing for supplying oil to an oil filter housing housing a filter.

In such a conventional communication device, a discharge port and an inlet port are opened on the outer surfaces of the pump body and the oil filter housing, respectively, and these ports are communicated via an oil path pipe. The work of installing pipes at predetermined locations is extremely troublesome and time-consuming.

The present invention has been proposed in order to eliminate such trouble and effort.The present invention has been proposed in such a way that an oil pump is subsequently attached to the crankcase, and an oil filter housing for accommodating the oil filter is attached to the oil pan that is joined to the lower surface of the crankcase. the pump body and the oil filter crank of the oil pump are provided with joints that are joined to each other by joining the crankcase and the oil pan, and at these joints, a discharge port provided on the pump body is connected to the oil filter. Introductory port provided on filterno crank 1-
By connecting the oil nozzle to the crankcase, the oil pump and oil filter housing can be immediately communicated with each other. Therefore, assembly is easy, and there is no need for a conventional oil pass pipe. It is an object of the present invention to provide the above-mentioned device having a simple structure.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In Fig. 1, an engine E mounted on a body frame F of a motorcycle is mounted in a -F section of a crankcase 1 in front of the vehicle (to the right in the drawing). Slanted front cylinder block 2
and a rear cylinder block 3 inclined rearward are arranged in series to form a V-shape. The bottom surface of the crankcase 1 is open, and an oil pan 4 for storing lubricating oil is joined to the open surface by bolts 5.

As shown in FIG. 2, an oil pump 6 is attached to the crankcase 1, and the drive shaft 1 of this pump 6 is connected to a starting clutch 90 and an input gear 10 attached to a transmission input shaft 8 inside the crankcase 1. It is driven via a transmission device 11, and the input gear 10 is decelerated by an output gear of a crankshaft (not shown). A suction pipe 12 of the oil pump 6 is connected to an oil strainer 13 immersed in oil in the oil pan 4.

Further, a drive shaft 15 of a water pump 14 is coaxially connected to the drive shaft 7 of the oil pump 6, so that both pumps 6, 14 are simultaneously driven by the chain transmission 11.

As shown in FIG. 3, an oil filter no-crank 16 is formed in the oil pan 4 by extending a portion of its bottom wall inward. This crank 16 and the pump body 6a of the oil pump 6 are connected to joint surfaces 6f, 16 which are joined to each other by joining the crankcase 1 and the oil pan 4.
A discharge port 18 provided in the main body 6a opens at the joint surface 6f on the side of the pump body 6a, and a connection from the discharge port 18 into the inside of the crank 16 opens at the joint surface 16f on the side of the crank 16. An introduction port 19 for introducing oil is opened. Therefore, both boats 18 and 19 communicate with each other at the same time as the crankcase 1 and oil pan 4 are joined. In order to define the joining position of the pump body 60 and the oil pan 4 and to ensure communication between both ports 18° 5-19, positioning collars 20 are fitted into both ports 18° 5-19. A seal ring 21 surrounding both joint surfaces 6.1
．． It is interposed between 161 and 161.

The oil filter housing 16 has an oil filter 22
is accommodated, and the introduction port 19 occupies a position outside this oil filter 22. The oil filter 22 consists of a cylindrical filter element 23 and a pair of upper and lower annular seal end plates 24 and 25 fixed to the inner peripheral surface of the filter element 23.
This oil filter 22 is added as follows using a lower cover 17 that closes the lower surface of the oil filter crank 16 and a mounting bolt 26 that fixes this.

That is, when applying the lower cover 11, this and the lower seal end plate 2
A coil spring 27 is compressed between the crank 16 and the upper seal end plate 24 due to the elastic force of the spring 27.
It is held in pressure contact with the ceiling. The mounting bolt 26 is attached to the lower cover 17
The oil filter 22 is screwed onto the crankcase 1 by passing through the centers of both seal end plates 24.degree. 6-25, thereby supporting the oil filter 22 on the additional bolt 26.

The mounting bolt 26 is connected to the lubricating oil passage 28 of the crankcase 1.
a plurality of first outlet ports 30 that communicate the inner side of the filter element 23 between the seal end plates 24 and 25 with the center hole 29;
a plurality of second outlet ports 31 that connect the outer side of the lower seal end plate 25 to the second outlet port 31, and a bypass port 32 adjacent to the second outlet port 31 that communicates the center hole 29 between the face seal end plates 24 and 25. and is provided. A cup-shaped IJ valve 33 is slid into the center hole 29 between the bypass port 32 and the second outlet port 31, and this valve 33 is
Normally, both ports 31 and 32 above are subject to the spring force of 340 springs.
When the oil pressure on the second lead-out boat 31 side rises above a certain value, it rises in response to the oil pressure and establishes communication between the two boats (31 and 32). ing.

35 is a mounting pin that supports the fixed end of the spring 34]・
It is fixed to 26.

In order to define the joint position between the crankcase 1 and the oil pan 4, a positioning collar 36 that is penetrated by the mounting bolt 26 is fitted into the joint between the crankcase 1 and the housing 16, and the outer periphery of this positioning collar 36 is used for the above-mentioned joint. A seal ring 37 is interposed in the portion.

Therefore, the oil pump 6 is in the oil pan 4 during its operation.
The lubricating oil stored in the suction pipe 1 is transferred from the oil strainer 13 to the
2, pressurize it appropriately, and discharge it from the discharge port 18. Discharge port 18, discharge oil, nose::
The inlet port 19 flows into the oil filter housing 16 and is filtered while passing through the filter element 23 from the outside to the inside, and then passes through the first outlet port 30 of the bolt 26 and the center hole 29 in sequence. The oil is then sent to the lubricating oil passage 28 of the crankcase 1 and supplied to the lubricating section of the engine E. The oil after lubrication is returned to the oil pan 4.

If the filter element 23 becomes clogged due to long-term use, the housing 1 outside the filter element 23 may become clogged.
6, the pressure inside the second outlet port 31 will inevitably rise, and this pressure will cause the relief valve 33 to rise.
rises to communicate between the second outlet port 31 and the bypass port 32. Therefore, filter element 2
3, the oil in the housing 16 passes through the second outlet port 31, the bypass port 32, between the upper and lower seal end plates 24 and 25, the first outlet port 30, and the center hole 29, and enters the lubricating oil path. Since the lubricating oil is sent to 28, it is possible to ensure a predetermined amount of lubricating oil.

As described above, according to the present invention, an oil pump is attached to a crankcase, an oil filter housing for accommodating an oil filter is formed in an oil pan joined to the lower surface of the crankcase, and the pump body of the oil pump and The oil filter housing is provided with a joint portion that is joined to each other by joining the crankcase and the oil pan, and the discharge port provided on the pump body and the introduction port provided on the oil filter housing are communicated at these joint portions. Therefore, communication between the oil pump and filter housing is established at the same time as the oil pan is joined to the crankcase, and therefore no special work is required for the communication, which significantly improves the ease of assembling the engine. -Moreover, the conventional oil path pipe is no longer required, simplifying the structure, improving ease of assembly, and contributing to cost reduction.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view of an engine, FIG. 2 is an enlarged vertical sectional view of the main parts of the engine, and FIG. 3 is an enlarged view of the line ■-■ in FIG. It is a thick sectional view. E...Engine, 1...Crankcase, 4...Oil pan, 6...
・Oil pump, 6Q...Pump body, 6f...Joint surface, 12...Suction pipe, 16...Oil filter housing, 16f...Joint surface, 18...Discharge port, 19...・Introduction boat, 22...Oil filter,
23...Filter element, 26...Mounting bolt 11-36-

Claims (1)

[Claims] An oil pump is attached to a crankcase, an oil filter housing for accommodating an oil filter is formed in an oil pan joined to a lower surface of the crankcase, and a pump body of the oil pump and the oil filter housing are attached to the crankcase and the oil filter housing. An oil pump and an oil filter for an engine, the oil pump and the oil filter for an engine having a joint part that is joined to each other by joining an oil pan, and a discharge port provided in the pump body and an introduction port provided in the oil filter housing communicate with each other at these joint parts. Communication device with the housing.