One-half part of a sliding surface bearing

Details One-half part of a sliding surface bearing One-half part of a sliding surface bearing

1989-03-03

1991-11-05

Hannon, Thomas R.

Bearings

Rotary bearing

Plain bearing

384275, 384296, F16C 3306, F16C 1710

Patent

active

050627180

DESCRIPTION:

BRIEF SUMMARY
This invention relates to a half part of a sliding surface bearing consisting of a bearing half-shell and at least one stop collar, which is constituted by a separate end flange and has mounting lugs which protrude toward the bearing half-shell and extend into open-ended fitting openings in the end faces of the bearing half-shell
In half parts of sliding surface bearings, a stop collar which is separate from the bearing half-shell may be provided substantially for two reasons: the manufacture is simpler and the adaptation is improved because the possible deformation suffered by the bearing half-shell as it is inserted into a bearing base bore will not be hindered by the stop collar and because constraining forces caused by relative movements between the bearing half-shell and the stop collar will be avoided. In order to provide a prefabricated unit of construction which can easily be handled although the stop collar and the bearing half-shell have separately been manufactured, it is known (Austrian Patent Specification 317,618) to provide the bearing half-shell at its end faces with open-ended fitting openings, which receive radially inwardly extending mounting lugs of the stop collar. The end flange which constitutes the stop collar is axially pushed onto the bearing half-shell in such a manner that the mounting lugs are inserted into the fitting openings of the bearing half-shell. To lock the stop collar against being axially pulled off subsequently, spreading stops are subsequently bent to extend axially in front of the mounting lugs, which are disposed in the fitting openings. A main disadvantage of that known design resides in that the possible radius at the transition between the bearing half-shell and the stop collar is restricted by the radially inwardly extending mounting lugs, which are embraced by the spreading extensions of the bearing half-shell, and for this reason sliding surface bearings composed of said bearing half-shells cannot be used with shafts having relatively large transition radii adjacent to a shaft collar. Besides, the axial fixation of the stop collar relative to the bearing half-shell only by the inturned spreading stops is not always sufficient.
To permit a connection of the stop collar to the bearing half-shell without the aid of a tool it is finally known (German Patent Specification 2,604,255 ) to insert the stop collar into a peripheral groove adjacent to the forward end of the bearing half-shell and to provide the stop collar with radially inwardly directed lugs, which enter corresponding openings of the bearing half-shell, so that the stop collar is axially and radially located relative to the bearing half-shell. The insertion of the radially inwardly directed lugs of the stop collar into the associated openings of the bearing half-shell may be facilitated by the elastic deformability thereof in that the axial edge portions of the bearing half-shell are forced toward each other as the stop collar is inserted into the peripheral groove so that the axial edge portions of the bearing half-shell will then move past the inwardly directed stops of the stop collar until said lugs are disposed adjacent to the openings of the shell in the mounted position and the elastic restoring of the bearing half-shell causes the lugs of the stop collar to snap into the bearing recess. That known design has the disadvantage that the bearing half-shell is weakened by the peripheral groove and the radius at the transition between the bearing half-shell and the stop collar is restricted owing to the design so that the field of application of such bearing half-shells is greatly restricted.
For this reason it is an object of the invention to avoid said disadvantages and so to improve with a simple means a half part of a sliding surface bearing which is of the kind described hereinbefore that an adequate transmission of force between the stop collar and the bearing half-shell is still ensured and the radius at the transition between the bearing half-shell and the stop collar may be made much large

REFERENCES:
patent: 4652150 (1987-03-01), New
patent: 4924523 (1990-05-01), Gojon

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