# US 2018/0026512 A1 · Force sense generator

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- Number: US 2018/0026512 A1
- Document ID: US20180026512A1
- Status: Published application
- Kind: A1
- Application number: 15/720,178
- Filed: 2017-09-29
- Published: 2018-01-25
- Earliest claimed: 2015-04-21
- Assignees: Alps Electric Co., Ltd.
- Applicants: Alps Electric Co., Ltd.
- Inventors: Mikio ONODERA
- Web page: https://patentgrep.com/patent/US20180026512A1

## CPC

- H02K 35/02: with moving magnets and stationary coil systems
- G06F 3/0362: with detection of one-dimensional [1D] translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
- H02K 7/1876: {with reciprocating, linearly oscillating or vibrating parts}
- H02K 33/00: Motors with reciprocating, oscillating or vibrating magnet, armature or coil system (arrangements for handling mechanical energy structurally associated with motors H02K7/00, e.g. H02K7/06)
- H02K 35/04: with moving coil systems and stationary magnets
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A force sense generator includes a rotatable circular plate having a rotation axis at a center of gravity; a motor that drives the circular plate to be rotated; a cam formed at a surface of the circular plate so as to surround the rotation axis; an anchor that is reciprocated along a linear trajectory that is perpendicular to the rotation axis of the circular plate; and a follower provided at the anchor and is moved along the cam, the cam being configured to include a first angle range and a second angle range such that the anchor is moved in opposite directions at different accelerations when the follower moves within the first angle range and when the follower moves within the second angle range, respectively, while the circular plate is rotated in one direction.

## Claims

### Claim 1

A force sense generator comprising:
a rotatable circular plate having a rotation axis at a center of gravity;
a motor that drives the circular plate to be rotated;
a cam formed at a surface of the circular plate so as to surround the rotation axis;
an anchor that is reciprocated along a linear trajectory that is perpendicular to the rotation axis of the circular plate; and
a follower provided at the anchor and is moved along the cam,
the cam being configured to include a first angle range and a second angle range such that the anchor is moved in opposite directions at different accelerations when the follower moves within the first angle range and when the follower moves within the second angle range, respectively, while the circular plate is rotated in one direction.

### Claim 2 (depends on 1)

The force sense generator according to claim 1, wherein a shape of the cam is configured such that an angle necessary to move the follower for a predetermined distance in a radial direction of the circular plate is smaller for the first angle range than for the second angle range.

### Claim 3 (depends on 1)

The force sense generator according to claim 1,
wherein the follower is provided at one end portion of the anchor in a moving direction, and
wherein the follower is configured to move only at one side of the rotation axis, and another end portion of the anchor is moved only at another side of the rotation axis.

### Claim 4 (depends on 1)

The force sense generator according to claim 1, wherein the cam includes a plurality of combinations, each including the first angle range and the second angle range in this order.