# US 9,518,843 B2 · Flange and resolver assembly

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,518,843 B2
- Document ID: US9518843B2
- Status: Granted
- Kind: B2
- Application number: 14/220,918
- Filed: 2014-03-20
- Published: 2014-11-20
- Granted: 2016-12-13
- Earliest claimed: 2013-05-16
- Assignees: Minebea Co., Ltd.
- Applicants: Minebea Co., Ltd.
- Inventors: Ryo Fukushima; Toshinori Chino
- Web page: https://patentgrep.com/patent/US9518843B2

## CPC

- G01D 5/2053: {by a movable non-ferromagnetic conductive element}
- H02K 24/00: Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A resolver has a structure in which the resolver is attached to a flange by press-fitting and in which strong stress that affects an angle detecting accuracy of a stator of the resolver is not applied. The flange, in which a resolver is press-fitted, includes a cylindrical portion in which a stator of the resolver is press-fitted to the inside thereof, and a tabular portion which is larger than an outer diameter of a cylindrical portion viewed from an axial direction and which is integrated with the cylindrical portion, wherein a clearance portion having an expanded inner diameter which does not contact with an outer periphery of the stator of the resolver is provided on an overlapped portion of a cylindrical portion viewed from a vertical direction to the axis and the tabular portion.

## Claims

### Claim 1

A resolver assembly, comprising:
a resolver having a stator; and
a flange in which the resolver is contained, the flange comprising:
a cylindrical portion in which the stator is press-fitted to the inside thereof, and
a tabular portion that is greater than an outer diameter of the cylindrical portion viewed from an axial direction and that is integrated with the cylindrical portion,
wherein a clearance portion having an expanded inner diameter that does not contact with an outer periphery of the stator is provided on an overlapped portion of the cylindrical portion viewed from a vertical direction to the axial direction and the tabular portion, and
a length in an axial direction of the clearance portion is greater than a thickness of the tabular portion.

### Claim 2 (depends on 1)

The resolver assembly according to claim 1, wherein a chamfered guide portion is formed on an inner periphery of an opposite end of the cylindrical portion to a portion in which the clearance portion is provided.

### Claim 3 (depends on 1)

The resolver assembly according to claim 1, wherein the clearance portion has a tapered shape in which an inner diameter gradually decreases in an extending direction of the cylindrical portion.

### Claim 4 (depends on 1)

The resolver assembly according to claim 1, wherein the clearance portion has a round surface shape.

### Claim 5 (depends on 1)

The resolver assembly according to claim 1, wherein the clearance portion has an enlarged diameter structure in which an inner diameter is a fixed value in an extending direction of the cylindrical portion.