JPH03129122A - Thrust bearing installing mechanism - Google Patents

Abstract

PURPOSE:To make advantageous in cost and to prevent damage of a hole of a relative rotary body and a projection of a bearing lace by installing a thrust bearing through engagement of a hole formed on the relative rotary body and the projection in the radial direction of the bearing lace provided to engage with it. CONSTITUTION:A first rotary body (relative rotary body) 2 has a hole 21 at the position crossing the outer circumference of a bearing race 41 of a thrust bearing 4, and a surface to be in contact with the outer surface of the bearing race 41 is formed as a recess surface 23. A radial direction projection 45 in the shape to engage with the hole 21 formed on the first rotary body 2 is integrally provided with the race body on the bearing race 41. When the thrust bearing 4 is installed in contact with the first rotary body 2, the radial direction projection 45 of the bearing race 41 is engaged with the hole 21 of the first rotary body 2, and movement in the circumferential direction of the bearing race 41 is regulated on the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a thrust bearing mounting mechanism disposed within an automatic transmission or the like.

(Conventional technology) Conventionally, this type of thrust bearing mounting mechanism was
For example, the one shown in Figure 8 and the “Automotive Engineering Extraordinary Issue vol.
The one described in 1.37 No. 7 Jl (June 1986, published by Railway Japan Co., Ltd.) is known.

(Problem to be Solved by the Invention) However, in such a conventional thrust bearing mounting mechanism, as shown in FIG. Since the mounting mechanism restricts movement in the circumferential direction by claw engagement with fixing holes such as bolt counterbore holes formed in the body, there are problems listed below.

■ Bending of the claws is required, which is disadvantageous in terms of man-hours and costs.

■ When a force in the circumferential direction is applied, the claws and the fixing holes come into line contact, which can cause damage to the holes and claws for items with low allowable surface pressure, such as aluminum parts.

The present invention has been made with attention to the above-mentioned problems, and is a thrust bearing mounting mechanism for attaching a thrust bearing in contact with a relative rotating body, while being advantageous in terms of man-hours and costs. The objective is to prevent damage to the formed holes and radial protrusions provided on the bearing race.

(Means for Solving the Problems) In order to solve the above problems, in the thrust bearing mounting mechanism of the present invention, a radial protrusion that matches the hole formed in the relative rotating body is provided on the bearing race, and the bearing race is mounted by engaging the protrusion. It was used as a means.

That is, in a thrust bearing mounting mechanism for mounting a thrust bearing in contact with a relative rotating body, the relative rotating body has a hole at a position intersecting with the outer periphery or inner periphery of the bearing race of the thrust bearing, and the outer surface of the bearing race is The bearing race of the thrust bearing has a concave contact surface, and the bearing race of the thrust bearing has a radial protrusion extending integrally from the race body and having a shape that matches the hole formed in the relative rotating body. It is characterized in that the circumferential movement of the bearing race is restricted by engaging the radial projections.

(Function) When installing a thrust bearing in contact with a relative rotating body, the radial protrusion provided on the bearing race of the thrust bearing is engaged with the hole formed in the relative rotating body.
Can be installed to restrict movement of the bearing race in the circumferential direction.

In other words, since the radial protrusions for regulating the circumferential movement of the bearing race are integrally extended from the race body, there is no need to form the pawls by bending as in the conventional method. Processing is omitted.

In addition, since this radial protrusion has a shape that matches the hole formed in the relative rotor, the surface will protrude even if an external force is applied in the circumferential direction.

(Example) Embodiments of the present invention will be described below based on the drawings.

First, the configuration will be explained.

FIG. 2 is a sectional view showing a part of the automatic transmission to which the thrust bearing mounting mechanism of the embodiment is applied.
A first rotating body 2 (relative rotating body) and a second rotating body 3 that rotate relative to each other on the outer periphery of the rotating body 2 are disposed in close proximity to each other, and both rotating bodies 2.
The thrust bearing 4 is installed in contact with the bearing 3.

As shown in FIG. 1, the first rotating body 2 has three circular holes 21 such as bolt counterbore holes at positions intersecting with the outer periphery of the bearing race 41 of the thrust bearing 4.
The surface in contact with the outer surface of the bearing race 41 is formed into a stepped concave surface 23 that is recessed one step relative to the second rotating body facing surface 22, and a shaft insertion hole 24 is formed in the center.

The thrust bearing 4 includes bearing races 41 and 42 arranged on both the inner and outer sides, a large number of needle rollers 43 arranged in rows in the radial direction between both races 41 and 42, and a bearing retainer 44, The bearing race 41 that is in contact with the first rotating body 2 has the first rotating body 2
Three circular radial projections 45 that match the circular holes 21 formed in the race body extend integrally from the race body.

Next, the effect will be explained.

When installing the thrust bearing 4 in contact with the first rotating body 2, the bearing race 41 of the thrust bearing 4
The radial protrusion 45 provided in the bearing race 41 is engaged with the circular hole 21 formed in the first rotating body 2, and the bearing race 41 is mounted while being restricted from moving in the circumferential direction.

That is, since the radial protrusion 45 for regulating the movement of the bearing race 41 in the circumferential direction is integrally extended from the race body, there is no need to form a claw by bending as in the conventional case. bending process is omitted.

As a result, it is more advantageous in terms of man-hours and cost than the conventional case where the claws are bent.

Furthermore, since the radial protrusion 45 has a shape that matches the circular hole 21 formed in the first rotary body 2, the surface does not protrude even if an external force is applied in the circumferential direction.

As a result, damage to the circular hole 21 and the radial protrusion 45 can be prevented even when the allowable surface pressure is low, such as aluminum parts.

Although the embodiment has been described above based on the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change within the scope of the gist of the present invention, it is included in the present invention. .

For example, in the embodiment, an example is shown in which the hole 21 is located at a position that intersects with the outside of the bearing race 41, but as shown in FIG. can.

In addition, in the embodiment, the hole 27 formed on the first rotating body 2 side
We have shown the case where 6 is circular, but as shown in Figure 4, 6
The hole 26 may have a rectangular shape, and in this case, the radial protrusion on the bearing race side is also squared to match the shape of the hole.

Further, in the embodiment, an example is shown in which the radial protrusions 45 are formed at three approximately equiangular locations, but when the circular holes 21 are formed at six locations or the like at irregular intervals, as shown in FIG. As shown, the radial protrusion 45 on the bearing race 41 side is also made to correspond to 6.
Place it in a specific location.

Further, as shown in FIG. 6, the bearing race 41 having radial protrusions 45 at three locations is standardized, and for example, as shown in FIG. Even if the holes 21 are formed at eight equal intervals, they may be engaged with three of the holes 21.

(Effects of the Invention) As explained above, in the present invention, in the thrust bearing mounting mechanism for mounting the thrust bearing in contact with the relative rotating body, The bearing race is provided with radial protrusions that match the holes formed in the bearing race, and the mounting method is achieved by engaging the protrusions, which is advantageous in terms of man-hours and costs. This has the effect of preventing damage to the radial protrusions caused by the radial projections.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing how a bearing race is attached to the first rotating body in the thrust bearing mounting mechanism of the present invention, FIG. 2 is a sectional view showing the thrust bearing mounting mechanism of the embodiment, and FIGS. The figure is a perspective view showing a relative rotating body of another embodiment, FIG. 5 is a perspective view showing a bearing race of another embodiment, FIG. 6 is a front view showing a standardized bearing race, and FIG. 7 is a perspective view showing a bearing race of another embodiment. FIG. 8 is a perspective view showing a state in which a standardized bearing race is attached to a rotating body, and FIG. 8 is a perspective view showing a conventional thrust bearing attachment mechanism. 1... Shaft 2... First rotating body (relative rotating body) 21... Circular hole (hole) 23... Concave surface 3... Second rotating body 4... Thrust bearing 1... Bearing race 45--Radial protrusion Patent applicant: Jatco Co., Ltd. Figure 1

Claims (1)

[Claims] 1) In a thrust bearing mounting mechanism for mounting a thrust bearing in contact with a relative rotating body, the relative rotating body has a hole at a position intersecting with an outer periphery or an inner periphery of a bearing race of the thrust bearing, A surface in contact with an outer surface of the bearing race is formed to be a concave surface, and the bearing race of the thrust bearing has a radial protrusion extending integrally from the race body and having a shape that matches the hole formed in the relative rotating body. A thrust bearing mounting mechanism characterized in that a radial protrusion engages with a hole in a relative rotating body to restrict circumferential movement of a bearing race.