US4899432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adjusting the axial play between the rotor and a motor
Assignee: Siemens AG
•
Filing: 1988-12-28
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Granted: 1990-02-13
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Expires: 2008-12-28
Abstract
Abstract For a simple adjustment, suitable for automation, of the axial play between the rotor (1, 2) and the stator (5 to 8) of a miniature electric motor, at least one bearing (3) is axially moved relative to its bearing sleeve (51) in the end bell (5) and is fixed in its adjustment position by deformation of the bearing sleeve in a form-locking manner. For axial fixation, especially when used for drives with large axial loads, a thrust shoulder (511, 512) is formed after the axial play is adjusted for the axial contact of the adjusted bearing (15) from the bearing sleeve (51) by hot molding, ultrasonic heat deformation. Alternatively, precut tabs may be formed on the sleeve by embossing to form a thrust shoulder.
Inventors
- 👤 Peter Adam
- 👤 Ronald Gleixner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:57
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/16; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
A method for adjusting the axial play between the rotor and the stator of a motor, characterized by the features that an operating fixed bearing for the rotor shaft (2) is axially moved for adjusting the axial play relative to a bearing sleeve, and is fixed in an adjusted position by a subsequent deformation of the bearing sleeve.
Claim 2
Independent Claim
58 words
A method for adjusting the axial play between the rotor and the stator of a motor, characterized by the features that an operating fixed bearing for the rotor shaft (2) is axially moved for adjusting the axial play relative to a bearing sleeve, and is fixed in an adjusted position by a subsequent deformation of the bearing sleeve.
Claim 3
Dependent Claim
28 words
The method according to claim 1, characterized by the feature that a spherical bearing (3) is held in a bearing sleeve (51) via an outer bearing abutment (36).
Claim 4
Dependent Claim
26 words
The method according to claim 1, characterized by the feature that a cylinder bearing (15) held in a bearing sleeve (51) is used as the bearing.
Claim 5
Dependent Claim
33 words
The method according to claim 1, characterized by the feature that the bearing is fixed by an axial thrust shoulder which is formed from the bearing sleeve after the axial play is adjusted.
Claim 6
Dependent Claim
33 words
The method according to claim 4, wherein said bearing sleeve is a plastic bearing sleeve, characterized by the feature that the thrust shoulder is formed from the bearing sleeve by a molding operation.
Claim 7
Dependent Claim
35 words
The method according to claim 5, especially for a plastic bearing sleeve, characterized by the feature that the thrust shoulder is formed from the bearing sleeve by a melting process, particularly an ultrasonic melting process.
Claim 8
Dependent Claim
24 words
The method according to claim 4, characterized by the feature that the thrust shoulder is formed from the bearing sleeve by an embossing process.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |