JP2003014093A - Oil filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil filter for a final reduction gear for a vehicle, simple in structure and coping also with an already shipped vehicle. SOLUTION: The oil filter 10 having an oil passage is detachably mounted to an oil level hole 4 of the final reduction gear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil filter for a gear device, which is lubricated with scraped oil, and more particularly to an oil filter mounted on a final reduction gear of a vehicle.

[0002]

2. Description of the Related Art For example, as shown in FIG. 4, an oil filter 10 is attached to a carrier 2 attached to an axle housing 1 of a vehicle, and a part of oil scooped up by a gear passes through this filter 10. There is known an oil filter device that removes foreign matter. Here, reference numeral 3 is a cover, 4 is an oil level hole, and 5 is a plug.

[0003]

However, in the above technique, since the oil filter 10 is attached to the carrier 2 attached to the axle housing 1, the replacement of the drive shaft and the carrier 2 is required.
It is necessary to remove the carrier from the axle housing 1 and disconnect the carrier 2 from the axle housing 1, and the replacement of the filter is troublesome and time-consuming.

Therefore, an object of the present invention is to provide an oil filter device which can be easily replaced from the outside of the axle housing.

[0005]

According to the present invention, there is provided an oil filter for a gear device, which is lubricated with oil that has been scooped up, the oil filter being detachable from a hole provided in a side wall of the gear device. The oil filter is equipped with an oil inlet having an oil receiving portion, a filter medium, and an oil outlet (claim 1). Further, according to the present invention, the gear device is a final reduction gear of the vehicle, and the oil filter is attached to an oil level hole provided in a case of the final reduction gear (claim 2).

According to the present invention having such a structure, a part of the oil scooped up by the gear of the gear device is stopped by the oil receiving portion, flows into the oil filter, is filtered by the filtering material, and is discharged from the oil outlet. Drained from. Here, it is preferable that the filter is replaced at the same time as the oil replacement, and for example, the filter may be replaced at the same time when the oil is replaced every 40,000 km.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the drawings, members having the same functions as those of the prior art are designated by the same reference numerals, and duplicated description will be omitted. In FIG. 1, a plug 4a in which a screw hole 4 that is an oil level hole (note: a conventionally known hole) in which an oil filter 10 is attached is formed in a cover 3 of an axle housing that is a side wall of a final reduction gear. Is welded.

In the screw hole 4, referring to FIGS. 2 and 3, a main body 11 of an oil filter 10 made of a pipe is provided.
The taper screw 12a of the screw ring 12 welded to is screwed onto the cover 11, the cover 18 is welded to one end of the main body 11, and the oil receiving portion 16 projects in a lip shape at the other end. Is provided with a mark 19 indicating the position of the oil receiving portion 16.

Inside the main body 11, for example, a filter medium 13 made of a porous sintered material is attached, and a lip 14 and an oil outlet forming an oil inlet 14a are formed at the ends of the filter medium. There is a lip 15 forming 15a.

The operation will be described below with reference to FIG. A part of the oil A scraped up by the ring gear of the final reduction gear (not shown) is stopped by the oil receiving portion 16 and flows along the lip 14 into the filter medium 13 of the filter 10 as shown by B. , Filtered lip 15
As shown by C, the oil flows out from the oil outlet 15a formed by the main body 11 and.

The filter is preferably replaced at the same time as the oil is replaced, and for example, the filter may be replaced at the same time when the oil is replaced every 40,000 km.

In this embodiment, in order to determine the position of the oil receiving portion 16, positioning is performed by tightening the taper screw 12a so that the mark 19 of the cover 18 is at the top, but the invention is not limited to this. Other methods may be used as long as the position is decided.

[0013]

The present invention is configured as described above, and can exhibit the following excellent effects. (1) An oil filter can be easily and inexpensively attached to a final reduction gear of a vehicle including an already shipped vehicle. (2) Therefore, the foreign matter of the oil that lubricates the final reduction gear can be removed, and the durability of the gear is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration when an oil filter according to an embodiment of the present invention is attached.

FIG. 2 is a side view of the oil filter of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a diagram illustrating a cross section of a conventional final reduction gear transmission.

[Explanation of symbols]

1 ... Axle housing 2 ... Career 3… Case cover 4 ... Screw hole 10 ... Oil filter 11 ... Main body 13 ... Filter material 14, 15 ... Lip 16 ... Oil receiver

Claims (2)

[Claims] 1. An oil filter for a gear device lubricated with scraped oil, wherein the oil filter is detachably attached to a hole provided in a side wall of the gear device, and the oil filter is An oil filter device comprising an oil inlet having an oil receiving portion, a filter medium, and an oil outlet. 2. The oil filter device according to claim 1, wherein the gear device is a final reduction gear of a vehicle, and the oil filter is attached to an oil level hole provided in a case of the final reduction gear.