# US 8,465,391 B2 · Device for fastening of a magnetic ring

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- Number: US 8,465,391 B2
- Document ID: US8465391B2
- Status: Granted
- Kind: B2
- Application number: 13/045,713
- Filed: 2011-03-11
- Published: 2011-10-13
- Granted: 2013-06-18
- Earliest claimed: 2010-04-13
- Assignees: ZF Friedrichshafen AG
- Applicants: Holger Woldt; Jan-Michael Buck
- Inventors: Holger Woldt; Jan-Michael Buck
- Web page: https://patentgrep.com/patent/US8465391B2

## CPC

- F16H 57/082: {Planet carriers}
- F16B 21/04: with bayonet catch
- F16H: GEARING
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

An arrangement for fastening a magnetic ring onto a transmission component (1) by way of a supporting ring (6) such that the supporting ring (6) is connected, in a rotationally fixed manner, to the transmission component (1) by a bayonet joint.

## Claims

### Claim 1

An arrangement for fastening a magnetic ring, via a supporting ring (6), onto a transmission component (1) such that the supporting ring (6) being connected, in a rotationally fixed manner, to the transmission component (1) by a bayonet joint;
wherein the transmission component (1) has ring groove sections (5a, 5b, 5c) distributed about its outer circumference (4a) with a recess (3) located between each of the ring groove sections (5a, 5b, 5c);
the supporting ring (6) has, on an inner circumference, ring segments (7) which are distributed around an inner circumference with a gap (8) provided between each adjacent pair of ring segments (7); and
the ring segments (7) are secured within the ring groove sections (5a, 5b, 5c) by axial compression which inhibits relative rotation therebetween.

### Claim 2 (depends on 1)

The arrangement according to claim 1, wherein the ring segments (7) are insertable, in an axial direction, into the recesses (3) and then the ring segments (7) are rotatable into the ring groove sections (5a, 5b, 5c).

### Claim 3 (depends on 1)

The arrangement according to claim 1, wherein the ring segments (7) have an inside diameter (Di) and the ring groove sections (5 a, 5 b, 5 c) have a groove bottom diameter (di), and tolerances are selected for the inside and groove bottom diameters (Di, di) so as to facilitate centering.

### Claim 4 (depends on 1)

The arrangement according to claim 1, wherein the ring segments (7) have a sheet thickness (s) and the ring groove sections (5a, 5b, 5c) have a groove width (b), and the groove width (b) of the ring groove sections is greater than the sheet thickness (s) of the ring segments (b>s).

### Claim 5 (depends on 1)

The arrangement according to claim 1, wherein a tangential extension of the ring groove sections (5a, 5b, 5c) and a tangential extension of the ring segments (7) are approximately the same, and cover a circumferential angle of approximately 60°.

### Claim 6 (depends on 1)

The arrangement according to claim 1, wherein the transmission component (1) is a planetary carrier.

### Claim 7 (depends on 6)

The arrangement according to claim 6, wherein the transmission component (1) is a planetary carrier and a number of the ring segments (7) and of the ring groove sections (5a, 5b, 5c) is equal to a number of planetary bolt bores (2) provided in the planetary carrier.

### Claim 8 (depends on 1)

The arrangement according to claim 1, wherein the transmission component (1) is component of an automatic transmission for a motor vehicle.

### Claim 9

An arrangement for fastening a magnetic ring onto a transmission component (1), the arrangement comprising:
a supporting ring (6) being rotationally fixed to the transmission component (1) by a bayonet joint, and
the magnetic ring being held by the supporting ring (6);
wherein the transmission component (1) has ring groove sections (5a, 5b, 5c) distributed about its outer circumference (4a) with a recess (3) located between each adjacent pair of the ring groove sections (5a, 5b, 5c);
the supporting ring (6) has, on an inner circumference, ring segments (7) which are distributed around an inner circumference with a gap (8) provided between each adjacent pair of ring segments (7); and
the ring segments (7) are secured within the ring groove sections (5a, 5b, 5c) by axial compression which inhibits relative rotation therebetween.