JPS6288872A - Cage for roller bearing for supporting movable gear to shaftin changeover gearing for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cage for a rolling bearing for supporting a movable gear on a shaft in a switching transmission of an automobile, the cage comprising a cylindrical rolling bearing. It relates to a type having a pocket bounded by a web for receiving a moving object.

BACKGROUND OF THE INVENTION Cages for rolling bearings of this type are known in a wide variety of designs. This bearing location has a special situation because when the rolling bearing is rotating, almost no load is generated by external forces, whereas when the rolling bearing is at rest, the entire load is transmitted. It is given. This has the disadvantage that, in a cooled state where the lubricating oil present in the bearing is highly viscous, the functionality of the rolling bearing is greatly affected and may even produce unpleasant noise. This phenomenon occurs because, in such operating conditions, the rolling elements do not necessarily roll clearly between the two races, but rather the races sometimes slip relative to the rolling elements. This is because the rolling elements are held fixed in the pockets of the rolling elements under the action of highly viscous lubricating oil. If this phenomenon is a well-defined operating condition, this operating condition has almost no adverse consequences, since the set of rolling elements mounted in the cage behaves like a polyhedral plain bearing. I don't invite you. However, in practice, such a clearly defined case is impossible, and the rolling elements alternately act as sliding surfaces while also performing a shifting movement, and as a result, the entire ring of rolling elements is moved against the race. to relatively accelerate/decelerate. This constantly alternating, shocking and uncontrollable acceleration and deceleration creates a noise that is bound to cause complaints.

OBJECT OF THE INVENTION The object of the invention is to improve the cage for rolling bearings of the type mentioned in the introduction so that undefined operating conditions can be achieved without requiring additional manufacturing costs. The goal is to configure the system so that it can be avoided with a high degree of certainty.

Means for Solving the Problems The structure of the present invention which solves the above-mentioned problems is as follows: a) The wall that limits the pocket in the circumferential direction of the retainer has notches and/or protrusions, and the rolling elements less than half the length of the movable body is in contact with said wall; and the retainer is damped relative to the shaft and/or the bore of the movable gear. It is structured as follows.

Effects of the Invention According to the first feature of the present invention, the contact surface provided between the rolling elements and the cage is reduced, so that the rolling elements are fixed so strongly that even extremely high viscosity oil can prevent their rolling movement. That will no longer be the case. A second feature of the invention provides that the cage can no longer be forced to accelerate and decelerate independently completely independently of the relative movement of the two races of the rolling elements, so that the cage can Either the race acts on the cage so that it is driven in the circumferential direction, or the cage is braked against the two races.
It rotates at half the number of revolutions between nine races of 12 ohms, and as a result, the cage can satisfy the kinematic conditions that should be met as a cage for rolling elements. The combination of the two above-mentioned features ensures that even in the cooled state, when the oil is still highly viscous, the rolling elements are transferred on the races in practice and thus avoid shocking accelerations and decelerations of the set of rolling elements.

Embodiments The fact that the cage is braked relative to the inner and/or outer race of the rolling elements means that the cage is guided with a significantly narrower play relative to the races of the rolling elements. obtained by. This arrangement provides the required braking action, especially with the action of highly viscous oil. The web has radially extending ribs extending over at least a portion of the length of the web, which ribs serve as guides for the retainer and penetrate into the viscous oil in the form of an impeller, which in turn This effect is further enhanced by increasing the rotational resistance.

However, the cage is completely or only partially under elastic preload, and the inner races of the rolling elements and (
or) it is also possible that it abuts the outer race.

Embodiment As shown in FIGS. 1 and 2, a movable gear 1 is supported on a transmission shaft 3 with cylindrical rolling elements 2 interposed therebetween. In order to guide the movable gear 1 in the axial direction, the movable gear 1 can be moved in contact with the shaft flange 4, which is stationary when viewed in one axial direction, whereas in order to move it in the opposite direction, a stop is required. A stopper plate 5 supported by the transmission shaft 3 via a ring 6 is provided.

The rolling elements 2 are mounted on a cage 7 consisting of an end ring 8 and webs 9 interconnected to the end ring 8. In particular, the structure of the web 9 can be clearly seen from FIGS. 3 and 4. The web 9 is configured to have a projection 10 near the pocket end and a notch 11 adjacent to the projection IO. protrusion! The axial width of 0 is significantly less than the entire length of the pocket.

The rolling element 2 moves along this protrusion IO, and the notches 11 forming the pocket wall other than the protrusion IO are located at equal intervals from the surface of the rolling element.

On the one hand, the rolling elements 2 roll on the surface of the transmission shaft 3, and on the other hand they are displaced in the bore 12 of the movable gear.

As can be seen from FIG. 3, the retainer 7 has a rib 13 at the web 9, and this rib 13 protrudes radially with respect to the transmission shaft 3, and is attached to the surface of the transmission shaft 3. They have a very small spacing. As a result, the retainer 7 is braked relative to the transmission shaft 3 by the highly viscous oil contained in the narrow intermediate chamber relative to the transmission shaft 3.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a supporting portion of a movable gear according to the present invention;
Fig. 2 is a cross-sectional view of the bearing part in Fig. 1 along the line ■-■, and Fig. 3 shows the bearing part according to the present invention.
FIG. 4 is an enlarged partial sectional view taken along a line, and FIG. 4 is a plan view showing the retainer portion shown in FIG. 3 developed. 1..., movable gear, 2... rolling element, 3... transmission shaft,
4... Shaft flange, 5... Stopper plate, 6... Retaining ring, 7... Retainer, 8... End ring, 9... Web, 10... Protrusion, 11... Notch, 12...
Movable gear hole, 13...rib.

Claims (1)

[Claims] 1. A cage for a rolling bearing for supporting a movable gear (1) on a shaft (3) in an automobile switching transmission, the cage comprising a cylindrical rolling element ( 2) with a pocket bounded by a web (9) for receiving the cage, in which the wall limiting the pocket in the circumferential direction of the retainer has a notch (
11) and/or projections (10), such that the rolling element (2) is in contact with the wall for a length less than half the length of the rolling element; and (b) The retainer is connected to the shaft (3) and/or the movable gear hole (12).
1. A retainer for a rolling bearing for supporting a movable gear on a shaft in a switching transmission of an automobile, characterized in that the retainer is configured to be braked relative to ). 2. The retainer is connected to the shaft (3) and/or the hole (12) of the movable gear.
) are guided at a significantly narrower distance from
A cage for a rolling bearing according to claim 1. 3. The web (9) has a radially projecting rib (13) extending over at least a part of the length of the web, the rib (13) serving as a guide for the retainer (7); A cage for a rolling bearing according to claim 2. 4. The rolling bearing according to claim 1, wherein the retainer (7) slides under elastic preload and abuts against the shaft (3) and/or the hole (12) of the movable gear. Retainer for.