Reliable positioning of one-way pulley and its pulley assembly

A pulley, one-way technology, applied in the direction of belts/chains/gears, components with teeth, hoisting devices, etc., can solve the problem of loose assembly, damage to the inner ring of the pulley, interference of front or rear support bearings Reduce and other problems to achieve the effect of tight combination, guaranteed interference and reliable positioning

CN102261453AInactive Publication Date: 2011-11-30JIANG SU NAN FANG BEARING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2011-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a one-way pulley with reliable positioning and its pulley assembly. The inner ring of the pulley is a stepped hole, and the stepped hole is composed of a front support bearing section used to cooperate with the front support bearing, and a single pulley used to cooperate with the one-way clutch. The one-way clutch segment is composed of a rear support bearing segment and a rear support bearing segment for cooperating with the rear support bearing. The hole aperture of the one-way clutch segment is smaller than the hole position aperture of the front support bearing segment and the rear support bearing segment; the pulley assembly of the present invention also includes The mandrel coaxially arranged with the belt pulley, the mandrel is a stepped shaft corresponding to the belt pulley, the shaft section shaft diameter for installing the one-way clutch is larger than the shaft section shaft diameter for installing the front support bearing and the rear support bearing, the belt pulley inner ring of the present invention The outer ring of the mandrel and the mandrel adopts a three-stage structure, which is convenient for the installation of the one-way clutch, and the installation process will not damage the dimensional accuracy of the two ends of the inner ring of the pulley and the outer ring of the mandrel, which ensures the interference after the bearing is pressed, so that The bearings are tightly combined with the inner ring of the pulley and the outer ring of the mandrel.
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Description

technical field

[0001] The invention relates to the technical field of pulley and core shaft assembly, in particular to a one-way pulley with reliable positioning and a pulley assembly thereof, which are used in automobile alternators. Background technique

[0002] In order to meet the high power requirements of automotive alternators, the pulley and mandrel assembly, that is, the one-way pulley assembly, as the most feasible solution to realize this function, has attracted more and more attention from many OEMs. A pulley assembly for an automotive alternator, which mainly includes a pulley and a mandrel, and a front support bearing, a one-way clutch and a rear support bearing arranged between the pulley and the mandrel in sequence, and a one-way clutch, a front support bearing and a rear support The bearing is installed between the pulley and the mandrel in the way of interference fit. The interference between the front support bearing and the rear support bearing and the i...

Examples

Embodiment Construction

[0014] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0015] like figure 1 As shown, the best embodiment of the one-way pulley with reliable positioning of the present invention is a one-way pulley with reliable positioning. The inner ring of the pulley 1 is a stepped hole, and the stepped hole is formed by the front support used to cooperate with the front support bearing 4. The bearing segment, the one-way clutch segment for cooperating with the one-way clutch 3 and the rear support bearing segment for cooperating with the rear support bearing 5 are composed of the one-way clutch segment with a smaller hole diameter than the front support bearing segment and the rear support bearing segment hole diameter. The...