A tolerance ring can be disposed between an inner component and an outer component, the inner and outer components defining stepped sidewalls. In an embodiment, a preassembly can include an outer component defining a bore having a stepped inner sidewall, an inner component having a stepped outer sidewall, and a tolerance ring adapted to be disposed between the inner component and the bore. In an embodiment, an assembly can include an outer component defining a bore having a stepped inner sidewall, an inner component having a stepped outer sidewall, and a tolerance ring disposed between the inner component and the bore. In an embodiment, a hard disk drive preassembly can include an actuator arm defining a bore having a stepped inner sidewall, a pivot having a stepped outer sidewall, and a tolerance ring adapted to be disposed between the pivot and the bore.

A tolerance ring has a band with outwardly extending corrugated protrusions forming waves that engage an outer surface of a shaft. At one end of the tolerance ring is an inwardly flared guide surface extending axially and radially from the band. The guide surface acts as a tapered entrance to a bore of a housing to assist during assembly.

A shaft coupling structure includes a shaft, a sleeve, into which the shaft is inserted, and a tolerance ring. The tolerance ring includes a cylindrical main body and a plurality of protuberances, which protrudes outward in a radial direction from an inner circumferential surface of the main body. The tolerance ring is fitted between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve. A communication passage that connects an inside and an outside of each protuberance is provided between the outer circumferential surface of the shaft and the main body.

A tolerance ring includes a cylindrical main body, which has an inner circumferential surface and an outer circumferential surface, and a plurality of protuberances, which protrudes outward in a radial direction from the inner circumferential surface of the main body. The main body includes a recess that extends from an end of the main body to at least one of the protuberances and communicates with an inside of the at least one of the protuberances.

A tolerance ring can be disposed between an inner component and an outer component, the inner and outer components defining stepped sidewalls. In an embodiment, a preassembly can include an outer component defining a bore having a stepped inner sidewall, an inner component having a stepped outer sidewall, and a tolerance ring adapted to be disposed between the inner component and the bore. In an embodiment, an assembly can include an outer component defining a bore having a stepped inner sidewall, an inner component having a stepped outer sidewall, and a tolerance ring disposed between the inner component and the bore. In an embodiment, a hard disk drive preassembly can include an actuator arm defining a bore having a stepped inner sidewall, a pivot having a stepped outer sidewall, and a tolerance ring adapted to be disposed between the pivot and the bore.

A tolerance ring including a sidewall and at least one projection from the sidewall that projects radially and axially to prevent axial displacement of the tolerance ring with respect to a component interior or exterior to the tolerance ring.

The invention relates to a method (19, 19, 39, 39, 59, 59) of assembling a part (5, 5, 25, 25, 45, 45) in the aperture (18, 18, 38, 38, 58, 58) of a component (3, 3, 23, 23, 43, 43). According to the invention, the assembly system (19, 19, 39, 39, 59, 59) includes a system (1, 1, 21, 21, 41, 41) of securing the component (3, 3, 23, 23, 43, 43) and the part (5, 5, 25, 25, 45, 45) to each other, which includes at least one pawl device (11, 11, 31, 31, 51, 51) intended to make the component (3, 3, 23, 23, 43, 43) and the part (5, 5, 25, 25, 45, 45) move integrally with each other. The invention concerns the field of timepieces.

A tolerance ring includes a ring body having a spring property, an abutment joint portion formed between circumferential end edges of the ring body, and protrusions protruding radially from the ring body, each having a reaction force due to radial rigidity. The tolerance ring includes an abutment joint semi-circumferential region and an opposing semi-circumferential region facing the abutment joint portion. The tolerance ring includes first and second X-direction semi-circumferential regions separated by a straight line connecting the abutment joint and opposing portions. The Y-direction passes through the axis center of the ring body and the abutment joint, and the X-direction is orthogonal to the Y-direction. The sum of the X-direction components of the reaction force vector in the first X-direction semi-circumferential region is the same or smaller than the sum of the Y-direction components of the reaction force vector in the abutment joint semi-circumferential region.

A tolerance ring includes a ring body formed of a strip plate material having a spring property and formed in a ring shape. The tolerance also has a plurality of protrusions. The protrusions are formed on the ring body and radially protrude from the ring body. An abutment joint portion is formed between a first end and a second end of the ring body in the circumferential direction. The tolerance ring includes an insertion restricting portion configured to restrict an entering amount of another tolerance ring in the axial direction being inserted into the abutment joint portion from the side of the first edge of the ring body. The insertion restricting portion is located in an area between a first axial end of the plurality of the protrusions in the axial direction and the first edge, so as to restrict the entering amount of the other tolerance ring.

A shaft mounting assembly includes an elongate shaft with an outer surface having a substantially circular cross-section and a cylinder having an inner surface defining a bore housing the shaft. A spring having a substantially circular discontinuous band with correspondingly shaped axially arcuate inner and outer surfaces. One of the surfaces comprises a groove, and the spring is positioned in the groove with both axial edges of the band located therein. In a de-energised state of the spring, the height of the band is greater than the depth of the groove, a portion of the band between the axial edges protruding out of the groove, the axial width of the band being less than the width of the groove; and, an energised state with the spring compressed within the bore to reduce the height of the band and increase the axial width compared to the de-energised state.