JPH0671918U - Filter seal - Google Patents

Abstract

(57) [Summary] [Structure] By rotating the filter seal 1 integrally with the rotary wheel of the rolling bearing, the lubricating oil is introduced into and discharged from the oil supply pocket 12b projecting from the second plate 12. A part of the lubricating oil introduced into the oil supply pocket 12b is supplied to the inside of the rolling bearing in a state where foreign matters are removed by the first through holes 11a of the first plate 11. [Effect] Since the foreign matter removed by the first through hole 11a is discharged together with the lubricating oil discharged through the oil supply pocket 12b, it is possible to prevent the first through hole 11a from being clogged. Therefore, the lubricating oil can be stably supplied to the rolling bearing for a long period of time, and as a result, the life of the rolling bearing can be extended.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter seal, and more particularly to a filter seal that is provided on at least one side of a bearing to allow the permeation of lubricating oil into the interior of the bearing and to restrict the permeation of foreign matter.

[0002]

[Prior art]

 Conventionally, in a gear transmission such as an automatic transmission for an automobile, the rolling bearing is lubricated by supplying a part of the lubricating oil for lubricating the gear to the rolling bearing that rotatably supports the gear shaft. There is. However, since foreign matter such as abrasion powder of gears is mixed in this lubricating oil, there is a possibility that the raceway surface of the rolling bearing may be separated early by the foreign matter. Therefore, at least one side portion of the rolling bearing is provided with a filter seal for removing foreign matters in the lubricating oil (see Japanese Utility Model Laid-Open No. 4-88717).

[0003]

[Problems to be solved by the device]

 Since the filter seal is made of open-cell foam, non-woven fabric, etc., foreign matter such as abrasion powder easily causes clogging at an early stage, and lubricating oil can be stably supplied to rolling bearings for a long period of time. However, it is not sufficient to extend the life of rolling bearings.

The present invention has been made in view of the above problems, and an object thereof is to provide a filter seal that is unlikely to cause clogging and can supply lubricating oil to bearings stably for a long period of time. And

[0005]

[Means for Solving the Problems]

 A filter seal of the present invention for achieving the above object comprises a first plate facing the inside of a bearing, and a second plate facing the outside of a bearing along the first plate, At least one of the first plate and the second plate is formed with a fitting portion that fits into the rotating ring of the bearing so as to be integrally rotatable, and allows the first plate to allow the lubricating oil to permeate into the bearing. A plurality of first through-holes for restricting permeation of foreign matter are formed, a second through-hole facing the first through-hole is formed on the second plate, and a lubricating oil introduction port and a discharge port are provided. However, an oil supply pocket for supplying a part of the lubricating oil introduced from the above-mentioned inlet with the rotation of the bearing to the inside of the bearing through the first through hole is formed corresponding to the second through hole. It is characterized by.

[0006]

[Action]

 According to the filter seal having the above configuration, by fitting the fitting portion to the rotating ring of the bearing, the filter seal can be rotated following the rotation of the bearing, and the lubricating oil is accompanied by this rotation. It can be introduced into the oil supply pocket and discharged, and at the same time, a part of the lubricating oil introduced into the oil supply pocket can be supplied to the inside of the bearing in a state where foreign matters are removed by the first through holes of the first plate. it can. Further, the foreign matter removed from the lubricating oil by the above-mentioned first through hole can be discharged together with the lubricating oil discharged from the discharge port. Therefore, it is possible to prevent foreign matter from staying in the first through hole portion and causing clogging.

[0007]

【Example】

 Embodiments will be described below in detail with reference to the accompanying drawings. FIG. 2 is a cross-sectional view of essential parts showing a usage state of the filter seal 1 of the invention. The filter seal 1 is provided on one side surface of a rolling bearing 2 that supports a counter shaft 3 of an automobile transmission, and lubricates the rolling bearing 2 between the counter shaft 3 and the casing 4. An oil supply passage 5 for supplying oil is formed. Further, an oil hole 31 is formed through the inside of the counter shaft 3 along the axis thereof, and the end portion of the counter shaft 3 is supplied to the rolling bearing 2 through an oil supply passage 5. An oil guide 6 for guiding the lubricating oil to the oil hole 31 is provided.

The filter seal 1 includes a first plate 11 which faces the inside of the rolling bearing 2 and a second plate 12 which faces the oil supply passage 5 in a state of being along the first plate. (See Figure 1). The first plate 11 is an annular shape integrally formed of a synthetic resin or a metal plate, and an inner peripheral side thereof is integrally rotatably fitted to an outer peripheral surface of an inner ring 21 serving as a rotating ring of the rolling bearing 2. A short tubular fitting portion 11c is provided so as to project. In addition, a plurality of slit-shaped first through holes 11a are radially formed in the first plate 11 (see FIG. 3). The first through hole 11a is formed to have a narrow width so as to allow the permeation of lubricating oil and regulate the permeation of foreign matter such as abrasion powder. Further, an annular member 11d such as a sponge is adhered to the outer peripheral side of the first plate 11 to close a gap with the outer ring 22 as a fixed ring.

The second plate 12 is an annular member integrally formed of a synthetic resin or a metal plate, and is attached to the first plate 11 so as to be integrally rotatable. In this second plate 12, second through holes 12a larger than the first through holes 11a are radially formed so as to correspond to the first through holes 11a of the first plate 11 (see FIG. 1). ), Corresponding to the second through hole 12a, the oil supply pocket 12b for introducing a part of the lubricating oil supplied from the oil supply passage 5 as the inner ring 21 of the rolling bearing 2 rotates is bulged. . The oil supply pocket 12b has an inlet 12c for introducing the lubricating oil on the end face side in the rotation direction and an outlet 12d for discharging the lubricating oil on the end face side opposite to the rotation direction. The outlet 12d side is narrowed so as to be smaller than the opening area of the inlet 12c.

With the above configuration, the inner ring 21 of the rolling bearing 2 can be made to follow the rotation and the filter seal 11 can be rotated. Along with this rotation, part of the lubricating oil supplied from the oil supply passage 5 can be rotated. Can be introduced into the oil supply pocket 12b of the filter seal 1. Then, a part of the introduced lubricating oil can be supplied to the inside of the rolling bearing 2 in a state where the foreign matter A is removed by the first through hole 11a of the first plate 11 (see FIG. 4). Here, since the discharge port 12d side of the oil supply pocket 12b is narrowed with respect to the introduction port 12c, it is possible to generate back pressure in the oil supply pocket 12b, and as a result, the lubricating oil is passed through the through hole 11a and the rolling bearing. 2 can be efficiently supplied. Further, the surplus lubricating oil of the lubricating oil introduced into the oil supply pocket 12b can be discharged together with the foreign matter A removed by the first through hole 11a through the discharge port 12d. Therefore, it is possible to prevent foreign matter from accumulating in the portion of the first through hole 11a and clogging the first through hole 11a, and to supply the lubricating oil to the rolling bearing 2 stably for a long period of time. can do.

When the rotating wheel is the outer ring 22, the fitting portion 11c may be provided so that it can be fitted to the outer ring. Further, the fitting portion 11c may be provided by being provided on the side of the second plate 12 or on both the first plate 11 and the second plate 12.

[0012]

[Effect of device]

 As described above, according to the filter seal of the present invention, a part of the lubricating oil introduced into the oil supply pocket along with the rotation of the rotating wheel of the bearing is supplied to the inside of the bearing in a state where the foreign matter is removed by the first through hole. In addition, since the removed foreign matter can be discharged together with the surplus lubricating oil introduced into the oil supply pocket, there is no risk that the first through hole will be clogged, and the lubricating oil will be supplied to the bearing. It can be stably supplied for a long period of time. Therefore, there is a unique effect that the life of the bearing can be extended.

[Brief description of drawings]

FIG. 1 shows an embodiment of a filter seal of the present invention, (a) is a front view and (b) is an enlarged sectional view.

FIG. 2 is a cross-sectional view of essential parts showing a usage state of a filter seal.

FIG. 3 is a rear view of the first plate.

FIG. 4 is a schematic diagram showing a state of oil supply to the rolling bearing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter seal 11 1st plate 11a 1st through hole 11c Fitting part 12 2nd plate 12b Oil supply pocket 12c Introduction port 12d Discharge port 2 Rolling bearing A Foreign matter

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A filter seal, which is provided on at least one side of a bearing to allow the permeation of lubricating oil into the interior of the bearing and to regulate the permeation of foreign matter; A second plate facing the outside of the bearing along the first plate, and at least one of the first plate and the second plate,
A fitting portion is formed to be integrally rotatably fitted to the rotating wheel of the bearing, and the first plate is provided with a plurality of first through holes that allow the permeation of the lubricating oil into the interior of the bearing and restrict the permeation of foreign matter. The second plate is formed with a second through hole facing the first through hole, and has a lubricating oil inlet and outlet, and is introduced through the inlet as the bearing rotates. A filter seal, characterized in that an oil supply pocket for supplying a part of the lubricating oil to the inside of the bearing through the first through hole is formed corresponding to the second through hole.