# US 2014/0150585 A1 · Gear device, drive device and electronic device

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- Number: US 2014/0150585 A1
- Document ID: US20140150585A1
- Status: Published application
- Kind: A1
- Application number: 14/090,651
- Filed: 2013-11-26
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: KYOCERA Document Solutions Inc.
- Applicants: KYOCERA Document Solutions Inc.
- Inventors: Shinji FURUTA
- Web page: https://patentgrep.com/patent/US20140150585A1

## CPC

- F16H 35/00: Gearings or mechanisms with other special functional features
- G03G 15/757: {Drive mechanisms for photosensitive medium, e.g. gears}
- G03G 21/1647: {Mechanical connection means}
- G03G 2221/1657: transmitting mechanical drive power
- Y10T 74/19614: Disconnecting means
- F16H: GEARING
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A gear device includes a gear means configured to transmit a torque of a motor to a rotating member. The gear means includes a rotor and an armature. The gear device further includes a coupling force applying part and a resistance force generating part. The coupling force applying part is configured to apply a coupling force so as to couple the rotor and the armature to each other. The resistance force generating part is configured to apply a resistance force acting against the coupling force to the gear means along with movement of the gear means away from the rotating member.

## Claims

### Claim 1

A gear device, comprising:
a gear means configured to transmit a torque of a motor to a rotating member,
wherein the gear means includes a rotor, an armature, a coupling force applying part configured to apply a coupling force so as to couple the rotor and the armature to each other and a resistance force generating part configured to apply a resistance force acting against the coupling force to the gear means along with movement of the gear means away from the rotating member.

### Claim 2 (depends on 1)

The gear device of claim 1, wherein the rotor and the armature make up a clutch and wherein disconnection and connection of the gear means and the rotating member are controlled in a corresponding relationship with a rotation direction of the clutch.

### Claim 3 (depends on 2)

The gear device of claim 2, wherein gear means further includes a first gear unit connected to the motor, a second gear unit connected to the first gear unit and a connecting unit configured to interconnect the first gear unit and the second gear unit, the first gear unit including the rotor and the armature, disconnection and connection of the second gear unit and the rotating member being controlled depending on the rotation direction of the clutch.

### Claim 4 (depends on 1)

The gear device of claim 1, wherein the resistance force generating part is configured to generate the resistance force on a coupling surface of the rotor and the armature after the gear means is disconnected from the rotating member.

### Claim 5 (depends on 1)

The gear device of claim 1, wherein the resistance force generating part is a lock mechanism configured to lock rotation of the gear means.

### Claim 6 (depends on 1)

The gear device of claim 1, further comprising:
a biasing force applying part configured to apply a biasing force to the gear means in a direction in which the gear means moves toward the rotating member.

### Claim 7 (depends on 1)

A drive device, comprising:
the gear device of claim 1;
a motor configured to generate a torque; and
a rotating member to which the torque of the motor is transmitted through the gear device.

### Claim 8 (depends on 7)

An electronic device, comprising the drive device of claim 7.