JPS5927447B2 - plain bearing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a partially cylindrical journal shell and a separate end flange disposed at or near the axial end of one or both of the shells. Regarding plain bearings.

Such plain bearings may support journal loads at the shell and end loads at the flange. If said shell and flange can be fabricated separately and then assembled together with relative ease so that sufficient positioning is established between them to prevent separation or dislocation during assembly or use. It's convenient. The shell and flange each have a strong backing, often of steel, lined with a lining of bearing material, such as a softer metal or plastic.

Such linings may be of self-lubricating material, so that there is no need to supply lubricating fluid between uses, or alternatively, there may be sufficient lubricant initially to sustain the life of the bearing. Fluid lubricants can be used by feeding or by feeding continuously or occasionally with fresh lubricant. According to the invention, a separate end flange engages in a recess in the back of the shell at or near said end and engages two or more projections on said flange. It is circumferentially positioned by cooperating shoulders in two or more notches of the shell.

The side walls of the recess serve to position the flange axially relative to the shell, and if axial positioning is required in both directions, 5 the recess serves to position the flange axially relative to the shell; It may be constituted by a groove on the back side of the shell with walls spaced apart.

Regardless, the protrusion preferably projects radially inwardly from the flange and provides circumferential positioning so that the flange can be perfectly positioned relative to the shell. said flange by bending said shell radially inwardly with said thin shell and then springing said shell to engage said recess or groove with said radially inner edge of said flange. and an outer shell, but if it is not easy to bend the outer shell, the protrusion, or each protrusion, may be deformed from the plane of the flange, during which time the flange may be assembled into the groove. After the or each projection is deformed and returned to its circumferential position, or the shell and flange are assembled by the inner edge of the flange just outside the groove, the It is also possible to deform the inner edge of the flange due to the local portion being pressed into the groove.

Preferably, said local portion is located in a lubricating groove where the material is thinner than in the remainder of said flange. The invention may be implemented in a variety of forms.

Some embodiments will now be described, by way of example only, with reference to the accompanying drawings. The plain bearing of the present invention shown in FIG. 1 has a semi-cylindrical shell 11 and a pair of flat semi-annular flanges 12.

One flange 12 is arranged at each end of the shell 11. Each of these components has a backing portion, the backing portion having a lining of low friction bearing material. An annular lubrication groove 13 extends along the center of the shell 11 .
The groove 13 is arranged to be supplied with lubricant through a radial passage 14. The flange 12 on each end engages a groove 15 on the back side of the shell 11, and assembly continues until the shell 11 fits within the inner edge 16 of the flange 12.
After pressing and bending the end of the flange 12 inward, the outer shell 11 is allowed to spring back and the flange 12 is inserted into the groove 1 as shown in FIG.
This is accomplished by radially engaging and holding the 5 in position.

FIG. 3 shows that the backing surface 17 of the flange 12 is positioned in axial abutment against one wall of the groove 15. FIG. An arrangement against the axially outer wall 18 is also possible depending on the application in which it is required. In the embodiment being described, the shell 19 of shell 11 and the inner edge 16 of flange 12 are tapered as shown in FIG. The inner edge of flange 12 is located at the bottom of groove 15. Circumferential positioning is provided by a pair of radially inwardly projecting projections 22. The protrusion 22 is connected to the string line 2
one at each circumferential end of the flange 12 defining a shoulder 23 along the flange 4; The outer shell 11 is cut out to form a notch, thereby forming a corresponding engagement shoulder. The radially inner edge 16 of the flange 12 is inserted into the groove 1 of the outer shell 11.
5, the deformation must be sufficient to allow the outer surface of the shell 11 to pass over the radially inner edge of the projection 22 of the flange. . It will be appreciated that when the shell 11 springs back to its home position, the shoulders engage at 23 to complete the axial, radial and circumferential positioning. If it is inconvenient to deform the shell 11 because it is too thick compared to its diameter, the protrusion 22 may be centered on any one of the three axes 23 shown in FIG. Can be designed to be folded.

The flange 1 is bent so that it can be easily bent.
This is done after removing a part of 2 by mechanical cutting.
Thereby, the projection 22 does not prevent the flange 12 from being engaged in the groove 15 by radial movement as illustrated by the arrow 24 in FIG. can be simply bent back into the plane of flange 12, as shown by arrow 25, until the shoulders are engaged at 23. In an alternative method of assembling the bearing shown in FIGS. 5 and 6, only one of the projections 22 is bent out of the normal plane of the flange 12.

The flange attached to the protrusion is 1 point relative to the point where it terminates.
80 is inserted into the groove with a circumferential movement to the opposite point, and then the flange 12 is rotated along the groove through an angle of 180, after which the projection is bent back into the plane of the flange. to establish circumferential position. In the modification shown in FIGS. 7, 8 and 9, which is particularly suitable when the flange is formed with a plurality of lubrication grooves 27, a large portion of the circumferential inner edge of the flange 12 is It does not enter the groove 15 and has the same radius as the back wall of the shell 11.

If they are positioned correctly with respect to each other, the portion of the inner edge of the flange 12 in the lubrication groove 27 will be driven axially against the anvil 31, as shown most clearly in FIG. By the use of the spring 29 it is locally deformed and forced into the groove 15. FIG. 9 shows that the material 32 remaining after cutting the groove 27 is thinner than the maximum thickness of the flange, and therefore deformation is very easy and does not result in deformation of the flange 12. In practice, the metal may be tapered at 32. In the modified form shown in Figures 7-9, the radius of the inner edge of flange 12 is no smaller than the back of the shell, and the shoulder 23 on projection 22 does not require bending and is easily axially moved into position. It will be appreciated that the initial assembly is accomplished by a simple axial movement, since the parts can be slid together.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a full-carrier array according to an embodiment of the present invention:
FIG. 2 is an end view of the bearing shown in FIG. 1; FIGS. 3 and 4 are enlarged sectional views taken along lines - and -, respectively, in FIG. 2; FIG. 5 is an end view of the bearing shown in FIG. FIG. 6 is an enlarged sectional view taken along the line - in FIG. 5; FIG. 7 is a drawing corresponding to FIG. 5 of another modified type of plain bearing; Corresponding drawings: FIG. 8 is a cross-sectional view taken along the line -- in FIG. 7; FIG. 9 is an enlarged detail view of FIG. 8. In the drawing, 11 is the outer shell, 12 is the flange, 13 is the groove, and 14
15 is a channel, 16 is an inner edge, 22 is a protrusion, and 23 is a shoulder.

Claims (1)

[Claims] 1. A partially cylindrical journal outer shell, and at one end of the outer shell,
or a plain bearing having a separate end flange disposed near one end, said end flange cooperating with two or more projections thereof and two or more notches in said shell; Positioned in the circumferential direction by
The protrusions are circumferentially spaced apart from each other, a shoulder of each protrusion extending generally radially inwardly of the end flange, and a radially inwardly inner edge of the end flange extending from the outer shell. A plain bearing, characterized in that it engages between two axially spaced side walls of a circumferentially extending recess on the back side of the bearing, such that the end flange is axially positioned.