JPS5824014Y2 - Composite bearing - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a composite bearing in which a radial bearing and a thrust bearing are combined.

As shown in FIG. 1, a conventionally known composite type bearing, for example a composite type rolling bearing, has a radial bearing raceway (e.g. outer ring) 1a and a thrust bearing raceway (thrust bearing collar) 2a integrated into one body. Because it is molded, the thrust bearing flange 2a of the thrust bearing relative to the bearing ring 1a of the radial bearing
It is difficult to obtain a perpendicularity (90° angle), and the machining is complicated, and even if the perpendicularity is achieved within the tolerance range, machining errors in the mating member to which the bearing is assembled, This method has disadvantages such as the inability to displace to follow installation errors, causing the bearing to hit local parts and cause early damage, and the mating parts to which the bearing is assembled must also be finished with high precision. The invention is aimed at eliminating the above-mentioned conventional drawbacks and problems.

Next, this invention will be explained with reference to the embodiment shown in FIGS. 1 to 5. Reference numeral 1 denotes a radial bearing, and outer ring 11.
It is made up of rollers 12 and a cage 13, and 2 is a thrust bearing, with one bearing ring (the thrust bearing plate on the fixed side) 21° and the other bearing ring (the thrust bearing plate on the rotating side). 22, rollers 23, and a cage 24.

In the figure, 5 is a housing.

First, the first embodiment shown in FIG. 2 will be explained.
The outer ring 11 of the radial bearing has a side step 111 on one end surface thereof, and a circumferential groove 211 is formed on the inner peripheral surface of one raceway ring 21 of the thrust bearing.

The inner circumferential surface of the bearing ring 21 is provided with the circumferential groove 211.
The raceway ring 21 has an elastic ring 3 made of an elastic material such as rubber, synthetic rubber, or synthetic resin that is engaged with and attached to the bearing ring 21.
The bearing rings 11 and 21 are fitted and held in the side step portion 111 of the outer ring 11 via the elastic ring 3, and the bearing rings 11 and 21 are integrally assembled.

FIG. 3 shows a second embodiment of the bearing, in which the bearing ring 21 of the thrust bearing is combined with the side step part 141 of the inner ring 14 of the radial bearing through the elastic ring 3 to form a single piece. There is.

Figures 4 and 5 show other examples of mutual coupling between the outer ring of the radial bearing and the raceway ring of the thrust bearing in the bearing type shown in Figure 1. , the elastic body 3 is an O-ring, which is interposed between both circumferential grooves, and in the one shown in FIG.
A cylindrical ring 3 having an outer diameter larger than that of the outer ring 11 is crimped between the bearing rings 11 and 21, and a part of the outer circumferential side of the ring 3 is made to protrude beyond the outer circumferential surface of the outer ring 11.

In the above embodiment, the raceway ring of the radial bearing and the thrust bearing were integrally combined via an elastic member.
Instead of the elastic member, a plastically deformable member that permanently deforms when subjected to a specific force may be used.

As mentioned above, in the composite bearing of this invention, the raceway ring of the radial bearing and the raceway ring of the thrust bearing are integrally combined via an elastically deformable member or a plastically deformable member. Even if the perpendicularity between the bearing and the thrust bearing is not accurate, if a load is applied during use,
The bearing easily conforms to the perpendicularity of the mating member to which it is assembled, deforms, corrects the perpendicularity, and maintains the perpendicularity commensurate with the precision of the mating member.

Therefore, there is no need to finish the bearing with very high precision, which is advantageous in terms of management and manufacturing.

Conversely, even if the perpendicularity of the mating part is not very accurate, as mentioned above, it easily adapts to the precision of the mating part and deforms, so there is no problem with uneven perpendicularity on the equipment side. can be used.

Another means of creating a perpendicularity between the radial bearing and the thrust bearing is to provide a spherical seat instead of the member in the above embodiment, or there may be a handling intermediate layer, but the bearing ring of the radial bearing and The thrust bearing may be assembled by leaving a radial gap between the bearing rings that does not restrict correction of the perpendicularity.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional side view of the main parts of a conventional composite bearing;
The figure is a diagram equivalent to Figure 1 showing the first embodiment of the composite type bearing of this invention, Figure 3 is a diagram equivalent to Figure 1 showing the second embodiment, and Figures 4 and 5 are respectively of the two bearing rings. FIG. 7 is a sectional view of main parts showing another example of integral combination. In the symbols of the embodiment, 1 is a radial bearing, 11 is an outer ring, and 12 is a radial bearing.
13 is a retainer, 14 is an inner ring, 2 is a thrust bearing, 21 and 22 are bearing rings of the thrust bearing, 23 is a roller, 2
4 is a retainer, and 3 is an elastic deformation member.

Claims (2)

[Scope of utility model registration request] (1) In a composite bearing that combines a radial bearing and a thrust bearing, the bearing ring (outer ring or inner ring) of the radial bearing and the bearing ring (thrust receiving plate) of the thrust bearing are elastic members of arbitrary shapes or plastically deformed. A composite bearing characterized by being assembled through members. (2) Utility model registration Claim (1) The compound bearing in which at least one of the bearings is a needle bearing.