US4314692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor-driven rope pull hoist for motor vehicle doors
Assignee: Siemens AG
•
Filing: 1979-09-04
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Granted: 1982-02-09
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Expires: 1999-09-04
Abstract
Abstract A motor vehicle hoist has a closed rope loop which is driven by a permanent magnet electric motor having a flat housing and a worm with a worm wheel. The worm is fastened to an end of the motor shaft which extends into an adjacent gear box, and turns a rope drum. The motor stator includes an axially oriented, magnetically nonconductive frame, which holds the rotor and at least one permanent magnet and which supports housing halves which serve, on both sides, as pole pieces. The worm wheel and rope drum are rotatably mounted on a common axis in the gear box. The motor is useful for opening windows, doors, and sliding roofs of vehicles.
Inventors
- 👤 Gerhard Brauer
- 👤 Peter Adam
- 👤 Werner Seuffert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/08; H02K7/081; E; E05; E05F; E05F11/00; E05F11/38; E05F11/48; E05F11/481; E05F11/483; E05F11/486; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/689; E05F15/697; H02K7/10; H02K7/116; H02K7/1163; H02K7/1166; E05F11/485; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55; F; F16; F16H; F16H57/00; F16H57/02; F16H57/021; F16H2057/0213
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
148 words
In a rope pull hoist, useful for operating motor vehicle doors, windows, and sliding roofs, and driven by a permanent magnet motor having a flat housing, the motor having a shaft extending into a gear box and carrying a worm, a worm gear driven by the worm and coupled to a rope drum for engaging a closed rope loop, the improvement comprising: the motor comprising a rotor mounted in an axially oriented, magnetically nonconductive frame along with at least one permanent magnet; pole plates for the motor being in close contact with either side of the frame and serving as flat housing halves, the housing so formed having a given thickness; the worm wheel and the rope drum coupled to it being rotatably mounted on a shaft in the gear box; and the gear box having a thickness less than the given thickness of the electric motor housing.
Claim 2
Dependent Claim
148 words
In a rope pull hoist, useful for operating motor vehicle doors, windows, and sliding roofs, and driven by a permanent magnet motor having a flat housing, the motor having a shaft extending into a gear box and carrying a worm, a worm gear driven by the worm and coupled to a rope drum for engaging a closed rope loop, the improvement comprising: the motor comprising a rotor mounted in an axially oriented, magnetically nonconductive frame along with at least one permanent magnet; pole plates for the motor being in close contact with either side of the frame and serving as flat housing halves, the housing so formed having a given thickness; the worm wheel and the rope drum coupled to it being rotatably mounted on a shaft in the gear box; and the gear box having a thickness less than the given thickness of the electric motor housing.
Claim 3
Dependent Claim
34 words
In a motor driven pull hoist according to claim 1, the further improvement in which the magnetically nonconducting frame comprises plural integral support means for mounting components of the motor and of the gears.
Claim 4
Dependent Claim
29 words
An electric motor-driven rope pull hoist in accordance with claim 2 further comprising: a partition wall integrally molded to the frame for separating the gear box from the motor.
Claim 5
Dependent Claim
26 words
An electric motor-driven rope pull hoist in accordance with one of claims 1, 2 or 3, further comprising: the frame being a one-piece plastic injection molding.
Claim 6
Dependent Claim
75 words
An electric motor-driven rope pull hoist in accordance with claim 4 in which at least one integral support means for the motor comprises: a half-open bearing cup integrally molded to the frame; a bearing on the motor shaft inserted in and axially fixed by the bearing cup; and a spring clip fastened to the frame across the opening of the bearing cup to retain the bearing therein and to fix the bearing against radial motion.
Claim 7
Dependent Claim
77 words
An electric motor-driven rope pull hoist in accordance with claim 4 in which at least one integral support means for the motor comprises: a half-open bearing cup integrally molded to the frame; a bearing on the motor shaft inserted in and axially fixed by the bearing cup; and a second half-open bearing cup screwed to the frame across the opening of the first-named cup to retain the bearing therein and to fix the bearing against radial motion.
Claim 8
Dependent Claim
97 words
An electric motor-driven rope pull hoist in accordance with claim 4 in which an integral support means for the motor not located adjacent to the worm comprises: a half-open bearing cup integrally molded to the frame; a calotte bearing seated in the bearing cup for absorbing radial forces; a spring clip fastened to the frame across the opening of the bearing cup to retain the bearing in the cup; and an axial thrust bearing coupled to the motor shaft and coupling thrust to the frame, the axial thrust bearing located between the calotte bearing and the worm.
Claim 9
Dependent Claim
47 words
An electric motor-driven rope pull hoist in accordance with claim 1 in which the motor has a single permanent magnet and further comprising: a space bounded on adjacent sides by the motor rotor and by the worm gear, the single permanent magnet being mounted in the space.
Claim 10
Dependent Claim
47 words
An electric motor-driven rope pull hoist in accordance with claim 7 in which the motor has a single permanent magnet and further comprising: a space bounded on adjacent sides by the motor rotor and by the worm gear, the single permanent magnet being mounted in the space.
Claim 11
Dependent Claim
34 words
An electric motor-driven rope pull hoist in accordance with claim 1, further comprising: means coupled between the worm wheel and a part of the gear box for limiting angular rotation of the worm wheel.
Claim 12
Dependent Claim
58 words
An electric motor-driven rope pull hoist in accordance with claim 10 in which the worm gear and the rope drum are supported in the gear box on a shaft and in which the means for limiting angular rotation is rotatably mounted on the shaft on the side of the worm wheel which is away from the rope drum.
Claim 13
Dependent Claim
28 words
An electric motor-driven rope pull hoist in accordance with claim 11 in which the worm wheel and the rope drum are coupled to each other by elastic means.
Claim 14
Dependent Claim
27 words
An electric motor-driven rope pull hoist in accordance with claim 12 in which the elastic means comprises buffers of at least one of rubber or a plastic.
Claim 15
Dependent Claim
33 words
An electric motor-driven rope pull hoist in accordance with any one of claims 1 or 10 and further comprising: fittings for fastening rope guiding tubes molded onto a part of the gear box.
Claim 16
Dependent Claim
39 words
An electric motor-driven rope pull hoist in accordance with any one of claims 1 or 10, further comprising: separate fittings, removably attached to the gear box, for fastening rope guiding tubes at different angles relative to the rope drum.
Claim 17
Dependent Claim
39 words
An electric motor driven rope pull hoist in accordance with claim 2 further comprising: fastening lugs made integral with the hoist in the region of the gear box for fastening and supporting the hoist on a motor vehicle part.
Claim 18
Dependent Claim
33 words
An electric motor-driven pull hoist in accordance with claim 16 in which the frame serving for mounting the gears comprises a cup-shaped part and the fastening lugs are molded to the cup-shaped part.
Claim 19
Dependent Claim
29 words
An electric motor-driven rope pull hoist in accordance with claim 16, and further comprising: a cover attached to and closing the gear box, the fastening lugs being molded thereto.
Claim 20
Dependent Claim
37 words
An electric motor-driven rope pull hoist in accordance with any one of the claims 16, 17, and 18 and further comprising: rubber buffers adapted to be inserted between the fastening lugs and the supporting motor vehicle part.
Claim 21
Dependent Claim
36 words
An electric motor-driven rope pull hoist in accordance with any one of claims 1, 2, 3, 8, 12, and 16 and further comprising: means for coupling a handcrank to one end of the motor rotor shaft.
Claim 22
Dependent Claim
59 words
An electric motor-driven rope pull hoist in accordance with claim 20 in which the end of the motor shaft away from the gear box extends out of the motor housing and further comprising: a worm coupled to said end and adapted to be brought into driving connection with a worm gear to which a hand crank can be coupled.
Claim 23
Dependent Claim
33 words
An electric motor-driven rope pull hoist in accordance with claim 21 and further comprising: an eye molded to a face of the magnetically conducting frame and the worm gear mounted in the eye.
References Cited (Backward Citations)
US2696579A
Cited
US3203690A
Cited
US3444402A
Cited
US3469128A
Cited
US3463951A
Cited
US3890743A
Cited
US4085629A
Cited
DE2803807A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |