Bearing system, especially for yarn feed devices
AssigneeMemminger-IRO GmbH
InventorsEberhard Leins, Hermann Schmodde, Attila Horvath
Life of this patent
Estimating the term…
Abstract
The bearing device is formed of a bearing seat, a roller bearing, and a squeeze element. The squeeze element rests over a large surface area on the outer ring of the roller bearing and rests only regionally on corresponding regions of the bearing seat. The regions are preferably linear or striplike and are oriented substantially axially. This facilitates the insertion and removal of the roller bearing into and out of the bearing seat and prevents rotation of the outer bearing ring even if the bearing seats are provided with relatively generous tolerances.
Claims24
A yarn feeder comprising a housing, a yarn guide drum, a shaft upon which said yarn guide drum is mounted, a plurality of bearing devices within said housing for rotatably supporting said shaft, said bearing devices having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) for each bearing device which defines a receiving chamber, axially open toward one side, for the bearing device and a space between the bearing device (18) and the bearing seat (21);
- and
- a squeeze element (36) made from an elastomer and disposed in the space between each bearing device (18) and the bearing seat (21), one of said squeeze element (36) and bearing seat (21) for each bearing device having an irregular surface adjacent a surface of the other of said squeeze element (36) and bearing seat (21) that define a plurality of circumferentially spaced squeeze zones in which the squeeze element is compressible and deformable to equalize misalignment of the housing bearing seats so that the shaft rotatably supported by the bearing devices will rotate freely even if tolerance variations prevent precise alignment of the bearing seats, and said adjacent surfaces of the squeeze element (36) and bearing seat (21) of each bearing device further defining respective displacement chambers circumferentially adjacent each squeeze zone into which the squeeze element (36) can be displaced as an incident to deformation in the squeeze zone.
A bearing device (46) comprising a housing (5),
- a shaft (4) carried by said housing,
- at least one ball bearing (18) supporting said shaft for rotatable movement about a concentric pivot axis (27),
- said bearing having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) which defines a receiving chamber, axially open toward one side, for the roller bearing (18) and a space between the roller bearing (18) and the bearing seat (21);
- and
- a squeeze element (36) made from an elastomer and disposed in the space between said ball bearing (18) and the bearing seat (21), and said bearing seat (21) having ribs extending substantially parallel to the pivot axis (21) that define squeeze zones in which said squeeze element (36) is compressed, causing deformation of its cross section.
A bearing device (46) comprising a housing (5),
- shaft (4) carried by said housing,
- at least one ball bearing (18) supporting said shaft for rotatable movement about a concentric pivot axis (27),
- said bearing having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) which defines a receiving chamber, axially open toward one side, for the roller bearing (18) and a space between the roller bearing (18) and the bearing seat (21);
- and
- a squeeze element (36) made from an elastomer and disposed in the space between the roller bearing (18) and the bearing seat (21), and said bearing seat (21) and ball bearing (18) defining a plurality of circumferentially spaced squeezed zones circumferentially spaced by respective displacement chambers each having a greater radial width than the squeeze zones in which said squeeze element (36) is compressed, causing deformation of its cross section.
A yarn feeder comprising a plastic housing, a yarn guide drum, a shaft upon which said yarn guide drum is mounted, a plurality of bearing devices within said housing for rotatably supporting said shaft, said bearing devices having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) for each bearing device which defines a receiving chamber, axially open toward one side, for the bearing device and a space between the bearing device (18) and the bearing seat (21);
- a squeeze element (36) made from an elastomer and disposed in the space between each bearing device (18) and the bearing seat (21), said squeeze element (36) for each bearing device comprising squeeze zones having a greater thickness than the space between the bearing device (18) and bearing seat (21) and squeeze element deformation receiving zones adjacent each squeeze zone having a thickness less than the spacing between each bearing device (18) and bearing seat (21), and said squeeze elements being compressible and deformable to equalize misalignment of the bearing seats within the housing so that the shaft rotatably supported by the bearing devices will rotate freely even if tolerances prevent concise axial alignment of the bearing seats.
A yarn feeder comprising a housing, a yarn guide drum, a shaft upon which said yarn guide drum is mounted, bearing devices within said housing for rotatably supporting said shaft, said bearing devices having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) for each bearing device which defines a receiving chamber, axially open toward one side, for the bearing device and a space between the bearing device (18) and the bearing seat (21);
- and
- a squeeze element (36) made from an elastomer and disposed in the space between each bearing device (18) and the seat (21), and said squeeze element (36) being compressed at circumferentially spaced-apart points, causing deformation of its cross section.
A bearing device (46) comprising a housing (5),
- a shaft (4) carried by said housing,
- at least one ball bearing (18) supporting said shaft for rotatable movement about a concentric pivot axis (27),
- said bearing having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) which defines a receiving chamber, axially open toward one side, for the roller bearing (18) and a space between the roller bearing (18) and the bearing seat (21);
- and
- an annular squeeze element (36) made from an elastomer and disposed in the space between the roller bearing (18) and the bearing seat (21), and said squeeze element (36) having a uniform thickness over its entire circumferential area and being compressed at circumferentially spaced-apart points, causing deformation of its cross section.
A bearing device (46) comprising a housing (5),
- a shaft (4) carried by said housing,
- at least one ball bearing (18) supporting said shaft for rotatable movement about a concentric pivot axis (27),
- said bearing having a substantially cylindrical outer surface (31);
- said housing having a non-divided bearing seat (21) which defines a receiving chamber, axially open toward one side, for the roller bearing (18) and a space between the roller bearing (18) and the bearing seat (21);
- and
- a squeeze element (36) made from an elastomer and disposed in the space between the roller bearing (18) and the bearing seat (21), and said bearing seat (21) having regions that have a lesser spacing from the roller bearing (18) than other regions located therebetween for defining circumferentially spaced squeeze zones in which said squeeze element (36) is compressed, causing deformation of its cross section.
Dependencies are inferred from the claim text.