JPH0410421Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a cage for a rolling bearing used in a transmission in an automobile.

2. Description of the Related Art In general, in power transmission devices for the purpose of speed change, such as automobile transmissions, lubricating oil such as gear oil is usually sealed in the transmission, and this lubricating oil is not easily splashed or splashed. Therefore, the bearings within the transmission are lubricated. For example, a tapered roller bearing with a cage is known as disclosed in Japanese Patent Application Laid-Open No. 156521/1983.

Problems that the invention aims to solve In the conventional structure, the rotating body and annular space of the tapered roller bearing have a tapered roller shape.
There is a slight pumping effect when the bearing rotates, but
Because of its small effect, it is difficult to evenly supply and circulate fresh lubricating oil throughout the interior of the device. For this reason, bearings and gears located in areas where lubricating oil accumulates are constantly exposed to uncooled oil, which tends to cause problems such as bearing seizing and gear galling.

Means for Solving the Problems This invention provides a cage for a rolling bearing consisting of an inner ring, an outer ring, and a cage that holds rolling elements interposed between the inner and outer rings at multiple locations on the circumference. A retainer for a rolling bearing is characterized in that fins are formed on at least one of the inner and outer circumferential surfaces of the column so as not to overlap with the pockets, for producing a pumping action to suck lubricant from the end of the bearing into the inside of the bearing. It is a means.

Further, the fins are formed continuously from one end edge of the retainer to the other end edge at an arbitrary angle α with respect to a perpendicular plane including the axis of the bearing.

Function When the bearing rotates, the cage with fins acts as a turbo pump, and its pumping action forces the lubricating oil into the bearing from the side where it splashes onto the bearing (side A), and the lubricating oil is sucked into the bearing from the side that splashes onto the bearing (side A). side).

Embodiment In the tapered roller bearings shown in FIGS. 1 and 2, 1 is an inner ring, 2 is an outer ring, 3 is a tapered roller interposed between the inner and outer rings 1 and 2, and 4 is a pocket 9 at multiple locations around the circumference. The tapered rollers 3 are held in the pockets 9 by the formed synthetic resin cage.
On the inner and outer peripheral surfaces of the columns 6 of the retainer 4, fins 7 and 8 that protrude in the radial direction and do not overlap the pockets 9 are continuous from one end edge 4a of the retainer 4 to the other end edge 4b. It is provided. The fins 7 and 8 are each formed to be inclined in the same direction at an arbitrary appropriate angle .alpha. with respect to a perpendicular plane containing the axis XX of the bearing. Here, in Fig. 2, when the retainer rotates in the direction opposite to the direction of inclination of the fins 7 and 8 (indicated by the arrow), the oil flow (arrow) in Fig. 1 is strongly generated by the pump action. .
Incidentally, since the cage of a tapered roller bearing has a tapered roller shape that can be expected to have a slight pumping action, from the point of view of increasing the pumping action of the cage 4, the fins 7 and 8 should be set at an angle α. Even if it is not tilted, the effect can be sufficiently obtained even if it is formed linearly within a plane.

Next, Figures 3 and 4 show the cage of this invention applied to a deep groove ball bearing, and 10 is an inner ring;
Reference numeral 11 denotes an outer ring, 12 a ball, and 13 a crown-shaped retainer made of synthetic resin in which pockets 17 are formed at a plurality of locations around the circumference, and the balls 12 are held in the outer pockets 17. The inner and outer peripheral surfaces of the pillars 14 of the retainer 13 are provided with pockets 1 that protrude in the radial direction, respectively.
Fins 15 and 16 that do not overlap with each other are continuously provided from one end edge 13a of the retainer 13 to the other end edge 13b. Further, the fins 15,1
Similarly to the embodiments shown in FIGS. 1 and 2, the bearings 6 are formed to be inclined in the same direction at an arbitrary appropriate angle α with respect to a perpendicular plane containing the axis of the bearing. Furthermore, the fins 15 and 16 extend toward the rear side of the retainer 13 and are formed integrally with the portion 18.
This is to bring the fins 15, 16 as close to the outside of the bearing as possible to effectively perform the pumping action.

In both of the above embodiments, the fins are formed on the inner or outer circumferential surface of the column, but the fins are not particularly limited and may be provided on at least one of the inner or outer circumferential surface of the column.

Effect When the bearing rotates, the fins in the cage generate a strong pumping action, and lubricating oil is forcibly supplied from one end of the bearing to the inside of the bearing, and is discharged to the other end of the bearing. . Therefore, for example, bearings placed in locations where lubricating oil accumulates in a power transmission device are supplied with fresh, cooled lubricating oil that is forcibly circulated by the pump action described above, and are kept in a constantly cooled state. This prevents the bearing from seizing.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of an embodiment of this invention, Fig. 2 is a partial perspective view of the cage shown in Fig. 1, Fig. 3 is a longitudinal cross-sectional view of another embodiment, and Fig. 4 is a view of the cage shown in Fig. 3. FIG. 3 is a partial plan view of the cage of FIG. 1,10...Inner ring, 2,11...Outer ring, 3,1
2...Rolling element, 4, 13...Cage, 7, 8, 1
5, 16... Huynh.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a cage for a rolling bearing consisting of an inner ring, an outer ring, and a cage that holds rolling elements interposed between the inner and outer rings at multiple locations on the circumference, A retainer for a rolling bearing, characterized in that fins are formed on at least one of the inner and outer circumferential surfaces of the retainer so as not to overlap with the pockets, for generating a pumping action for sucking lubricant from the end of the bearing into the inside of the bearing. (2) A utility model registration claim characterized in that the fins are formed continuously from one end edge of the cage to the other end edge at an arbitrary angle α with respect to a vertical plane including the axis of the bearing. Cages for rolling bearings described in range (1).