# US 9,882,457 B2 · Method for producing a round stator and rolling device

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- Number: US 9,882,457 B2
- Document ID: US9882457B2
- Status: Granted
- Kind: B2
- Application number: 14/355,739
- Filed: 2012-10-30
- Published: 2014-10-02
- Granted: 2018-01-30
- Earliest claimed: 2011-11-03
- Assignees: Continental Automotive GmbH
- Applicants: Continental Automotive GmbH
- Inventors: Benjamin Maares; Uwe Schein
- Web page: https://patentgrep.com/patent/US9882457B2

## CPC

- H02K 15/022: with salient poles
- H02K 15/026: Wound cores
- Y10T 29/49009: Dynamoelectric machine
- Y10T 29/53143: Motor or generator
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for producing a round stator includes: inserting wound pole teeth into an insertion section of a rolling device to form a pole tooth row, pushing the pole tooth row into a ring section of the rolling device, which ring section reproduces a round end shape of the stator to form a round stator structure, removing the round stator structure from the rolling device while holding the stator structure together, and processing the stator structure further to form a finished stator unit.

## Claims

### Claim 1

A method for producing a round stator, comprising:
inserting a plurality of lined-up and wound individual pole teeth (6) into an insertion section (3) of a slot (2) of a rolling device (1), the cross-sectional shape of the slot (2) being matched to the cross-sectional shape of a wound pole tooth, to form, from the plurality of individual pole teeth (6), a pole tooth row (10);
pushing the pole tooth row (10) into a ring section (5) of the slot (2) of the rolling device (1), which pushing of the pole tooth row (10) into the ring section (5) of the slot (2) into the ring section acts on the pole tooth row (10) so that the pole tooth row (10) reproduces a round end shape of the stator to form a round stator structure comprising the pole teeth (6);
removing the round stator structure from the slot (2) of the rolling device (1) while holding said round stator structure together; and
processing said stator structure further to form a finished stator unit.

### Claim 2 (depends on 1)

The method as claimed in claim 1, further comprising, before the inserting step, winding and interconnecting the individual pole teeth (6) so as to obtain a cohesive toothed rack-like pole tooth row (10), which is inserted into the insertion section (3) of the slot (2) of the rolling device (1).

### Claim 3 (depends on 1)

The method as claimed in claim 1, wherein the insertion section (3) is rectilinear.

### Claim 4 (depends on 1)

The method as claimed in claim 1, wherein the pole tooth row (10) is pushed from the insertion section (3) of the slot (2) of the rolling device (1), via a spiral transition section (4) of the slot (2) of the rolling device (1), into the ring section (5) of the slot (2) of the rolling device (1).

### Claim 5 (depends on 1)

The method as claimed in claim 1, wherein the formed round stator structure is removed from the slot (2) of the rolling device (1) with the individual pole teeth (6) being pressed together, and said stator structure is processed further in this state.

### Claim 6 (depends on 1)

The method as claimed in claim 1, wherein the round stator structure is fixed so as to form the finished stator unit.

### Claim 7

A rolling device (1) for forming a round stator, the rolling device (1) for use in a method that includes: inserting a plurality of lined-up and wound individual pole teeth (6) into an insertion section (3) of a slot (2) of the rolling device (1), the cross-sectional shape of the slot (2) being matched to the cross-sectional shape of a wound pole tooth, to form, from the plurality of individual pole teeth (6), a pole tooth row (10); pushing the pole tooth row (10) into a ring section (5) of the slot (2) of the rolling device (1), which pushing of the pole tooth row (10) into the ring section (5) of the slot (2) into the ring section acts on the pole tooth row (10) so that the pole tooth row (10) reproduces a round end shape of the stator to form the round stator structure comprising the pole teeth (6); removing the round stator structure from the slot (2) of the rolling device (1) while holding said round stator structure together; and processing said stator structure further to form a finished stator unit, the rolling device (1) comprising:
the slot (2), the cross section of said slot being matched to the cross-sectional shape of the wound pole tooth (6), and said slot having the insertion section (3) and the ring section (5).

### Claim 8 (depends on 7)

The rolling device (1) as claimed in claim 7, wherein the slot (2) is configured to receive the wound pole teeth (6) in a vertical manner and has a depth smaller than the height of the pole teeth (6).